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April 25, 1950
A. T. KOEHLER ET AL
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BAND SPLICER
Filed May 28, 1956
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April 26, 1960
A. T. KOEHLER ETAL
2,933,958
BAND SPLICER
Filed May 28, 1956
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April 25, 1950
A. 'r. KOEHLER ET AL
2,933,958
BAND SPLICER
Filed May 28, 1956
5 Sheets-Sheet 3
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April 26, 1960
A. T. KOEHLER ETAL
2,933,958
BAND SPLICER
Filed May 28, 1956
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April 26, 1960
A. T. KOEHLER ETAL
2,933,958
BAND SPLICER
Filed May 28, 1956
5 Sheets-Sheet 5
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United States Patent 0
1
‘2,933,958
Patented Apr. 26, v1960
2
Many other objects and advantages of the construction
herein shown and described will be obvious to those
skilled in the art from the disclosure herein given.
To this end our invention consists in the novelcon
struction, arrangement and combination of parts herein
shown and described, and more particularly pointed out
in the claims.
In the drawings, wherein like reference characters in
2,933,958
BAND SPLICER
Albert T. Koehler, Herbert Palmleaf, and Melvin E.
Ross, Chicago, Ill., assignors to A. J. Gerrard 8: Com
pany, Melrose Park, 111., a corporation of Illinois
Application May 28, 1956, Serial No. 587,564
15 Claims. (Cl. 81-9.1)
10
dicate like or corresponding parts:
Fig. 1 is a top plan view of a band splicing machine
embodying the present invention, portions of the reel
structure for holding a supply of seals in strip form,
being omitted;
Fig. 2 is a side elevational view of the machine illus
The invention relates generally to scaling mechanisms 15 trated in Fig. 1;
and more particularly to automatic seal attaching and
Fig. 3 is a transverse sectional view taken approxi
crimping mechanisms adapted to be used therewith.
mately on line 3-3 of Fig. 1;
The present invention has among its objects the pro
Fig. 4 is a sectional view taken approximately onthe,
duction of a seal attaching and crimping mechanism
line 4-4 of Fig. 7;
which may be automatic in operation to feed seals into
Fig. 5 is a sectional view taken approximately on the
the mechanism, and upon suitable actuation, crimp the
line 5——5 of Fig. 3;
seal about two strap ends. Thus where the novel mech
anism is incorporated in a semi-automatic band splicing
machine and the like, the operator may position two
i
Fig. 6 is a sectional view taken approximately on the
line 6—-6 of Fig. 7;
Fig. 7 is a sectional view taken approximatelyon the
strap ends in operative relationship to the sealing jaws, 25 line 7—7 of Fig. 6;
and upon actuation of the mechanism, the band ends will
Fig. 8 is a sectional yiew taken approximately on the a
be joined by a seal surrounding the same, the latter being
line 8—8 of Fig. 7, illustrating the sealing mechanism
crimped to provide an effective connection, following
at the end of the crimping operation;
which the mechanism is recycled to position a fresh seal
in operative position to receive the next pair of strap 30
ends.
Another object of the invention is the production of
such a mechanism which is so designed that it will take
various sized strapping, both as to width and thickness,
within reasonable limits, and e?'ectively connect the same
by a crimped seal, without requiring adjustment of the
sealing mechanism, whereby a very e?icient connection
may be achieved providing up to approximately 88%
strength and tension of the banding material.
Another object of the invention is the production of
such a mechanism for splicing bands or the like, having
very e?icient safety devices whereby the machine may be
set in operation only when the operator’s hands are in
Fig. 9 is a top plan view of a portion of the seal
guiding structure taken approximately on the line 9—9
of Fig. 5, with the cover member therefor removed to
show the details of the seal advancing and indexing,
mechanism;
Fig. 10 is an elevational view looking from right to,
left as seen in Fig. 4, of the electrical control switch
arrangement and actuating mechanism therefor;
Fig. 11 is a perspective view of a portion of a strip of
connected seals adapted to be used with the present
invention;
Fig. 12 is a perspective view of two strap ends joined
together by means of a crimped seal as performed by the '
present invention; and
Fig. 13 is a diagrammatic ?gure of the electrical cons I
a predetermined safe position before the machine can be
'trol circuits, which may be utilized in the machine
actuated.
45 illustrated.
A further object of the invention is the production of _
While the novel ‘seal attaching and crimping means
such a mechanism which is comparatively simple, hav
- illustrated in the drawings may have considerable appli
ing a minimum of moving parts, which is very rugged and
cation in various types of automatic sealing mechanisms,
thus dependable in operation, requiring minimum amount
for the purposes of explanation, the mechanism is illus
of maintenance.
trated in conjunction with a novel machine designed to
A further object of the invention is the production of
splice sections of banding, as for example, where strap
novel indexing means whereby partially formed seals
material is to be reused, and short sections of the band
may be fed from a coil of strip material, to insure ac
ing are therefore spliced into longer, reusable lengths.
curate positioning of the seal following its severance from
Thus in the machine illustrated the seals are adapted to'
the strip, novel means also being provided for auto
55 be automatically fed from a roll of seals into the crimp
matically severing the seal during the operation of the
machine.
A further object of the invention is the production of
a novel seal which is so shaped that it may be readily
ing and attaching mechanism, and automatically posi
tioned for engagement with a pair of strap ends, which
may be manually positioned in operative relationship, fol
lowing which the seal is crimped upon the band ends to .
partially fabricated in strip form and subsequently
securely attach the same together and the machine rc
severed into individual seals, whereby the seal will be 60 cycled automatically to bring a following seal into opera-j
severed from the strip without producing dangerous
tive position for engagement with the next pair of strap
sharp points or spiders which might result in injury to
ends to be joined.
persons handling the banding, such result being achieved
The embodiment of the invention illustrated is adapted
even though the severing means and seal indexing mech
to be hydraulically actuated, a hydraulic pump driven by
65
anism may be slightly out of adjustment, thus eliminat
an electric motor, and controlled through electrically ac‘r
ing critical adjustments in the mechanism.
tuated valve structure, may be employed with the crimp
A further object of the invention is the production of
ing mechanism to provide extremely dependable fast,
such a mechanism which may be readily adapted to hy
positive action which may be accurately controlled by
draulic actuation with accurate electrical control, re
the electrical means.
sulting in a highly e?icient, fast acting, relatively easily 70 Referring to the drawings, and particularly Figs. 1 and
adjusted mechanism.
'
2, the reference numeral 1 indicates generally a cabinet .
ass-apes
,
.
,
3
'42
.
'
The sealer ‘ echanism
typeebench having-a» top*2'on~'which is positioned a plate
Referring to Figs. 3 through 8', the sealer mechanism
3, which forthe purposes; of reference will be'termed as
mounting or base plate, secured to the top 2 by suitable
5 may comprise a pair of spaced substantially parallel
side plates 21a and 21b, which extend through a more or
means such as bolts 4. In the embodiment of the inven
tion-illustrated; theemountinggplate-3w is 1 adapted to carry OI less rectangularly shaped opening 22 in the plate 3 and
all wof/the» sealing: and- crimping ' mechani'smindicated rgcn~
may be supported by the latter by mounting bars 23 which
erally by the, numeral 5, as-wellas the meansrfor- guiding
may be secured to the plates 21a'and 21b by screws 24,
the seals-in strip 'form, into the sealing mechanism, and a the bars in turn being secured to the plate 3 by suitable
in ‘addition thereto is adapted to supporting guiding means:
cap screws 25. As illustrated in Figs. 4 and ,6, each of
for the bands to be joined and the manually actuatable 10 the side plates may be provided with a pair of vertically
extending parallel slots 26, the slots 26 in the side plate
control mechanism.
,
21a being connected by a transversely extending slot 27,
In the construction‘ illustrated-the guiding, means for,‘
the bands to be joined comprise-sfa'pair of‘verticallyjex
the latter being positioned‘ intermediate the ends of the
tending» standards 6 and'7, while the manual'control mech
anismjncludeszapair of ‘switch 'actuatingmemb'erscom
respective slots 26,, whereby the combined shape of the
15 slots 26 and 27 is in the form of a‘letter H.
prising allevere8iand a'switch'ibutton 9." The seals-area
The slots
26 may be closed adjacent the outer faces of the plates
"adapted to, be supplied in. apontinuous rollt‘which" may‘
21a and 2112 by plates 28a and 28b, the latter plates being
be‘supported‘at the end ‘of the machine adjacentythe inlet
for the seals .by suitable suppprtingstructureindicated‘.
generally-by‘the numeral‘ 11, only a portion oti'the latter
being illustrated in Figs‘. 1 and-2, and includinggaiseal'
secured .to; the side plates ;21a- and 211;, respectively, by
screws 2,9:adjacentthe upperedge of the plates 28a and
28b andat theinlowergpprtions; by the bar‘ 23‘ and'cap,
20
screwsi24.
guide ‘member ‘12' illustrated as-b'eing of'more or less arcu—_.
ate vshape.
~
'
I
Extending between the ~side-plates21a- and 21b are a
pair otpins 31 having their ends disposed incorrespond
.
The embodiment "of the-invention illustrated may‘ be.
hydraulically actuated by a hydraulic cylinder,indicated ‘
ing; slots .26 as clearly illustrated in, Fig, 7, theplates 28a
and128b forming ,retainingmernbers to prevent axial
generally ‘by'the numeral 13; adapted to..receive suitable.»
movementof the pins31. Pivotallymounted'on each
oil under pressure to reciprocate a piston and piston rod‘
within the cylinder; The oil may be supplied from a
pin;3\1 isjv a’ plurality of crimpingv jaws '32,_the particular
construction illustrated utilizinglthree'such jaws on eachv
of'ithe'pins. 31, and disposed intermediate'thejaws are
tank or reservoir 14 by means, of a hydraulic‘ pump .15‘
driven‘ by- an electricmotor. 16,j the oil being controlled~
with respect'to the cylinder 13 bya suitable electro~mag~
netic valve structure 17, the various components being
punchblocks 33, which as illustrated in Fig.- 8, are gen
,operatively connected by hoses indicated generally by;
tal .portion 35 which terminatesin inclined faces 36;
Positioned adjacent each of the side plates 21a and 21b
are generally rectangular ‘plate-like members“ 37 and 38,
which for the purpose of identi?cationwill be respec
erally rectangular in shape,.and;provided at their‘ upper
edge with a recess or notch ‘34, thereimhaving a horizon
the. numeral 18.
The arrangement issuch that,'during operation, a' seal "
which‘ has previously been severed from the supply roll ,
will be positionedat the topof the sealing. mechanism 5,
tively‘teimedthellower-cutter block. or bar and the seal
where, a pairof strap ends may-be positioned on the seal -
stop splate; Both ot;these~ plates may beprovidedwith
and ‘by simultaneous actuation, of the lever..,8 an'dswitch.
generally. "vertically extending * slots‘. i 39 ‘ therein. . through . .
crimped. thereon... to -. securely join, the: .latter,.. following
which“ the .jaws of the crimping mechanism will [open to.
permit removal of the joined straps therefrom and?the
machine will. complete .a recycling operation to. advance,
may‘ inove vertically with respect .to ‘the pins. thus operat
buttqu..9,theseallwilhbefolded around, the strap; endsgand' ' 40 which. the-;pins:31.extend; whereby-theplates37 and 38
ing'the jaws.'32.i vSuitable spacersf40 arer'disposed'be.
tween ‘the ‘plates:v 37 and '38.anditherespectivejaws 32
' adjacent thereto.
a ‘successive seal into the sealing mechanism, sever the . 45
AsiIlustrated inIFig. 6, the ‘plate 37 may be provided
with .ainotch 41 in its upper edge, forming a shearing
edgei42, thelop'posite edgeportion of the plate 37 being '
the entire operation may be repeated.
a
relieved
as indicated at 43, while’ the member 38 may‘
seallfroml the supply .roll, and position. the seal .for. en
' gagernentwith a subsequent pairv of. strap ends,.whereby
_ -
a »
In. actual practice theoperator normally would hayea
.be 'provided’with‘ al?at upper edge‘ without‘: a ‘similar
‘supply. of: pieces. of. strapping ,so. positioned .onxthe top 24 notch, as will‘ be vapparent'from a reference toi'Fig. 6.
.or other supportingstructurethat. he may readily-grasp?‘0 Each of the jaws'32‘ may beyprovide'd'with a bore.
one strap in hisright. hand andthe second strap in-his left;
hand, the adjacent ends of the straps extending inop¢ ~
posedrelationrbetween the operator’sv hands. He may
then' place the adjacent strap endsiinrproper relationship.
on,,the seal,_which will bringhis leftshand directly above
the. switch lever’ 8, and his righthand'directlyabove the
44-itherein1 in which are ‘positioned vpins, 45, vthe latter
also extending through pairs of actuating links ‘46, each
of ‘which’ are positioned between‘a respective pair of
ja'ws' 32,1 and ‘thus positioned‘ below the punch blocks
33; asfwill'be clearly‘apparent from a reference tow/Fig.
8.‘ Also‘carriedby'each'of ‘the pins 45 adja'centthe side
switch button 9, so that when the strap ends are in proper
position he may readily apply- pressure to the lever 8 and .
plates 21a and 21b are cylindrically shaped rollers 48
which‘ may cooperate with vertically extending ' guide rails
. thecap 9.
49 having inclined top faces 50, positioned adjacent'the
vertical edges'of the’ side plates 21a and 21b and secured
Simultaneous actuation of these elements will
result in the actuation of the crimping mechanism, fold
ingthe seal over on the strap ends, crimping the sealto .
'thereto'v by suitable means such as cap screws 51.
jointhe-ends and thereuponopening-the. jawsto permit
thetoperator to remove the joined straps; and place them‘
be = pivotally connected'to ‘a1 clevis" block 52‘ rigidly
mounted on the free end of the piston rod 53 of the hy»
dr'aulic cylinder’ 13, the upper. end block 54 of the cyl
inden'being secured: to the sideplates'21a and 21b by
bolts or screws 55 passing through the side plates'and'
mechanism will automatically recycle, feedinga new, seal a
into the crimping mechanism, severing-the seal from the
supply/roll, and bringing the severed'seal- intoposition;
threaded into the block 54; "
for
operation
engagement
the» operator,
with the mayv
next pairof
pickupstraps.’
the next.
During
pairgof‘
70
straps and position the ends thereof upon theseal which ‘
operatorto perform/splices very rapidly and 'sixhun'dred
spliccsper hour-may bereadily achieved. 1
' 7
~
As
illustrated'in Fig. 8, the'free ends of'the links 46 may
to.one. side. Following opening of the crimping jaws, the
has been brought into. operative position in the‘ interim.
The present invention thus enables aminexperienced.
~
~
As will be apparent from a reference-to Fig. 3, the
clevis block 52 is provided with slots 56- therein, each
‘adapted to receive the free ‘end of one of the links 46,
the- pins: 57‘exte'nding through the links 46' and cooper
ablei boresin‘the. block 52,. axialimovement' of” each pin -
.175 57 being restricted by the side plates_21al:and;21b.1
2,933,958 "
Carried by the side plate 21a and cooperable with
the lower cutter bar 37 is an upper cutter block 58,
portions of which are visible in Figs. 3, 4 and 8, the
6’
edges of the side walls or ?aps 66 of each seal may
extend in the same direction as the lines of juncture
67, and the end edges may terminate in diagonally ex
block 53 being generally L-shaped, having a vertically
extending portion 59 and a horizontally extending por
tending edge portions 71.
tion 61 which, as illustrated in Fig. 3, is positioned in
the cross slot 27 in the side plate 21a, the end face 62
portion 69 is su?'iciently long in the longitudinal direc
8 that the crimping assembly comprising the jaws 32,
handling the strap and if the notch 68 was more or
The construction of the seal is such that the web
tion of the strap, that the severing of the leading seal
of the portion 61 being positioned substantially in the
from the remainder of the strip will always occur at the
plane of the inner face of the side plate 21a and coop
web 69 and thus insure a sheared edge that is free from
erable with the cutting edge 42 of the lower cutter 37. 10 burrs
or spiders, as they are called, which might cause
It will be noted that the upper cutter block 53 is spaced
injury to persons handling the strap. It will be appre
from the bottom edge of the slot 27 to provide a pas
ciated that in the event the shearing of the leading seal
sageway 63 therebelow for the seals, as will hereinafter
took place at a point where a portion of the side walls
be described.
or ?anges 66 were likewise sheared, the projecting cut
15 ting of such side walls would form a sharp pointed burr
General operation of the crimping mechanism
or the like which could readily cause injury to persons
it will be appreciated from a study of Figs. 4, 6 and
less V-shaped, with the apex terminating on the shear
punch blocks 33, spacers 49, seal stop plate 38 and upper
cutter block 37, together with the pins 31, links 46, pins 20 ing line 67, the severance would have to take place
exactly at the apex or such a burr ‘or spider would be
47 and rollers 48, may be reciprocated in a vertical
produced, necessitating extremely accurate and critical
direction under the action of the piston rod 53. During
adjustment of the feeding mechanism to insure cutting
such movement the pins 31 are restricted by the slots
exactly between the seals. However, by utilizing a
26 in the side plates from moving other than in a ver
tical direction as de?ned by the slots. However, as the 25 notched arrangement such as that illustrated, the web
69 may be of de?nite length, as for example three
pins 45 are not con?ned by the side plates 21:: and 21b,
sixteenths of an inch, enabling the shearing action to take
other than as to axial movement, the positioning and
place anywhere along the web and at the same time pro
movement of the pins 45 may be controlled by the rollers
duce a uniform sheared edge on the seal free of burrs, etc.
48 and guide rails 49, whereby the movement of the
Long strips of connected seals, such as that illustrated
pins 45 is restricted to a vertical movement when the
in
Fig. 11, may be arranged in coiled form and supported
rollers 48 are disposed along the inner vertical edges
by a suitable supporting structure, indicated in general
of the guide rails 49, but as the rollers reach the upper
by the numeral 11 in Figs. 1 and 2, only a portion of such
end of each guide rail they may move laterally outward
structure
being illustrated, whereby the leading end of
above the upper end face of each guide rail, permitting
the strip may be fed upwardly on the curved ramp 12
the jaws 32 to rotate about the pins 31 which at such
to the seal advancing mechanism.
point have approached the end of their travel in the slots
Referring particularly to Figs. 3 and 5, mounted on
26 and are adapted to be seated on the upper end walls
the base plate 3 is a pair of laterally spaced substantially
of the latter.
parallel seal guide rails or bars 72, forming a passage_
Thus assuming that the piston of the cylinder 13, and
the piston rod 53 associated therewith, are at the end 40 way 73 therebetween adapted to receive the strip of seals
as clearly illustrated in Figs. 3, 5 and 9. The rails 72
of their retractive movement, the crimping mechanism
may be secured to the plate 3 by suitable means, as for
Will substantially assume the relationships illustrated in'
example, shouldered cap screws 74 (see Fig. 1), four
Fig. 4, wherein the rollers 48 are disposed between the
such screws being employed in the embodiment illustrated
guide rails 4%, the jaws 32 being rotated into an open
in
the drawings, with such screws also being adapted
position and the entire crimping assembly being with
drawn downwardly between the side plates 21a and 211;. 45. to retain a cover plate 75 which is provided with a pair
of longitudinally extending slots 76 adjacent the crimping
As the rollers 48 reach the upper end faces of the guide
mechanism 5 and a pair of key hole shaped openings
rails 49 the links 46 will urge the pins 45 laterally out
77 adjacent the guide 12 for engagement with the screws
74. Thus the cover 75 may be removed from the rails
the piston rod 53, the inclined top faces 58 of the guide 50 when desired, by sliding the cover to the left as viewed in
ward to rotate the jaws into a closed position similar
to that illustrated in
8. Upon return movement of
rails 49 will urge the rollers 48 inwardly, whereupon
the latter will be free to move downwardly as illustrated
Fig. l to permit the disengagement of the right hand
end of the cover from the adjacent screws '74, which
will simultaneously position the heads of the opposite
pairs of screws 74 in the enlarged portion of the key
Seal feeding mechanism
55. hole slots 77, permitting the adjacent end of the cover
As illustrated in Figs. 3, 4, 9, l1 and 12, the seal
plate to be raised upwardly, with the heads of the screws
indicated generally by the numeral 64, is formed from
passing through the openings 77. The cover plate 75
in Fig. 4.
suitable metal stock, as for example, strip material, and
is provided with a base portion 65 having a pair of side
may be locked in assembled relation on the guide rails
2 by suitable means, as for example, a bar lever 78
walls or ?anges 66 adapted to be folded over as illus 60 pivoted at 79 on a standard or column 81 mounted on
trated in Fig. 12 to form a generally tubular structure
the plate 3, the lever 73 being adapted to engage a locking
in which the strap ends S and S’ may be positioned,
stud 82 carried by the cover plate 75, thereby prevent
the seal being partially severed as indicated at 67 and
ing movement of the plate in a releasing direction when
deformed out of the plane of the remaining portions of
the lever 78 is in the position illustrated in Figs. 1 and 2,
the seal to form an interlock between the seal and the 65 but upon rotation of the lever upwardly to release the
strap ends, such interlocking structure being generally
stud 82, the cover may be removed as described. A stud
old in the art. As illustrated in Fig. 11, the seals 64
are adapted to be fabricated in a continuous strip of
connected seals, the latter being joined together at oppo
83 on the plate 3 is adapted to engage the opposite side
of the lever 78 to guide the latter into locking engage
ment with the stud 82.
site ends of the respective base portions 65 as indicated 70
It will be noted from a reference to Figs. 4 and 5,
by dotted lines 67 in Fig. 11. It will be noted that the
which show the cross sectional shape of the partially
strip forming the seals is notched as indicated at 68 on
formed seal as it advances between the guide rails 72, that
the lines of juncture 67 of adjoining seals, forming a
the side walls 66 of the seal diverge outwardly and up
connecting web portion 69 at which the individual seals
wardly from their junction with the base 65, and dis
are to be subsequently severed. As illustrated, the end 75. posed in thepassageway 73 between therguide rails 72
andisecured'toltheicoverrplate'75 bysuitable means such ._
asscrews 74', isan inner guiderail72' whichcooperates»:
with the base 'plate'3, rails 72 and cover 75 toform a
more or less C-shaped passageway for the strip ofseals
adjacent‘the crimping mechanism 5.
7
of wmpressisaoi Quantities-i111, Which-1 are operative <10
bias-theshaftsr-ll?la d crossbar 107 in- a right-hand:
directionras viewed-dd Fig. 3;
The-cross, bar 107 may be connected to the lever-84
Si by suitable means, as foriexampl'e a stud 113 having one
Referring to Figs. 3, 5 and 8, the means for advancing
the strip of seals may include a rock lever 84‘ carried
end threaded into the bar 107 intermediate the shafts 105'
and locked in place by a nut 114. The oppositelend of
the‘ stud'113 is adapted to extend through a trunnion
by a shaft 85 supported by apair of spaced brackets 86,»
block-115 pivotally carried by the lever 84, the latter
which in turn may be carried by the plate 3, the brackets 10 (having a bifurcation 116 at the opposite side of the pin
having flanges 37 thereon adapted to receive studs
on
between which bifurcation the block 115 may be piv
which may be threaded nuts 89 for retaining;
u: .i-Aiif}
in position. T0 add rigidity to the structure the brackets
otally supported by opposed bolts 117, threaded through
the bifurcated portions 116.v Adjustment of the trunnion
86 may also be operativelyconnectedto the plate 21a
block 115 along the stud 113 may be effected by adjust-v
ashereinafter described, by a pair ‘of studs- 91rigidly» 15 ment of two, pairs of lock nuts 118. Rigidly mounted on
connected to the vertically extending flanges 92 ofeachv
shafts 1% are carn blocks 119, the latter being gen
bracket by lock nuts 9,3rthreaded on the studs -?1.
erally rectangular in shapeand havingv an inclined upper
Carried by the lever-84st the-upper end which error top, face-121 engageable'withrollers 122 mounted on
tends into'an ,openingin the plate 3'thereof is a seal en-.
bushings 123 supported on a pin 124 which also passes
gaging pawl 94 which maybe pivotally supported on a 20, through the block 52 and'piston rod 53, pinning the two
pin $5 carried‘by thelever 84, the pawl being biased
together, and provided with threaded end portions 125
in a counterclockwise direction about the pin 95, as
and 126, respectively, the end 125 being provided with
viewed in Fig. '3, by a torsion spring 96 having one end
a washer‘127 and'nut 128 adapted to retain the bushing
bearing onthe intermediate web 97 of the lever. and the
123'thereon. and in like manner the bushing 123 on its
opposite end on the pawl. As illustrated in Figs. 3 and 25 end 126 may be retained by a nut 129.
5, the pawl 94- may be provided with an upwardly ex
It will be apparent that-with this construction, as the
tending portion 97, of generally triangular shape in cross
section, havingrapairlof spaced ears or lugs 98 thereon
adapted to enter'the slots‘ 63 of the. strip of seals, as
clearly illustrated in. Figs, 3 and 5, whereby ‘rocking 30
movement of the lever 84 about the axis of the shaft 85
will result in reciprocation of the pawl 94.
piston rod'53and structure carried thereby, including
the'pin- 124'and rollers 122 carried thereby, approaches
the end of its‘retracting movement, the rollers 122 will
engage the inclined cam faces 121 of the blocks 119,
urging the latter laterally and with its shafts 105 and
cross bar 107, in' opposition to the springs 111, axial
movement of the shafts 105 resulting in movement of
the trunnion block 115 thereby rocking the lever 84
, Thus advancement of the strip of seals will take place
when the lever 84 is rotated in a clockwise direction,
whereas the lugs 98 of the pawl may move out of engage 35 about the axis of the shaft 85 to move the pawl 94 in a
ment with the slots 68 of the strip of seals, in opposition
to the biasing spring 06, so that no movement of the
strip of seals will be effected upon the return movement
of the lever 84.
feeding direction toward the right as viewed in Fig. 3.
The mechanism will normally be so adjusted that the
lever 34 and pawl 94 will move the seals the desired
amount to bring the junction of adjacent seals into en
Suitable indexing'means for the strip of seals‘ may
gagement with the index pins 99 as illustrated ‘in the
also be provided, that illustrated in the embodiment of 40 drawings.
, The pins 99 are so positioned with respect to
the invention shown, comprising a pair of index pins 99
the face 62 of the upper cutter block 58 that the desired
reciprocably mounted in bores 161 located in the respec
point of severance of the leading seal will be positioned
tive guide rails '72 and having threaded stems 102 ex
in line with the face 62, and as the assembly carrying the
tending through apertures in the bottom wall of the
lower
cutter blade 37 moves upwardly, the cutters Will
bores 101, the pins 99 being urged inwardly by com H,
pression springs 103, each having one end seated on the 4"" shear themetal at theweb 69 to sever the leading seal
from the strip.
,
head of the pin 99 and the opposite end on the bottom
~
'
T he. control'mechanism
wall of the bore 101, as clearly illustrated in Fig. 5,
with inward movement of the pins being restricted by
As ‘previously mentioned, theihydraulic valve structure
lock nuts 104- on the threaded external ends of the 50-.vindicated generally‘ by the‘ numeral 17 in the drawings,
is adapted to be electro-magnetically actuated whereby
respective pins; the lock nuts also providing a means of
adjustment for the indexing structure. As illustrated in
the manually actuated controlling means may be in the
Fig, 9, the heads of the pins 99 may be provided'with
form of electric switches. Likewise the reciprocation of
tapered or conical shaped edges 99’ which are adapted
the hydraulic piston and pistonrod 53 may be accom
to engage the inclined edges 71 of adjacent seals, opera 55E-plished by limit switches operated by the’ movement of
tiveto accurately position or index the seal with respect
the piston rod.
to the mechanism 5. The indexing means also is op
Referringto Figs; 3, 4, 8 and 10, carried by the plates
21a and 21b is a switch panel or plate 131 which may
erative to insure retention of the advanced strip in posi
tion, while the feeder pawl 94 returns to its original posi<
be securedto the plates 21a and‘ 21b by’ respective bars
tion following advancement of the strip.
60' 132, the latter being secured to the plates V21aand 21b
by screws 133and the panel 131 in turn,_being secured
The seal advancing mechanism is adapted, to be
to the bars by screws 134. The adjacent bar 132, as will
actuated by movement of the rod 53, with the details
be apparent from a reference to Figs. 3 and 8, may also
of such mechanism being illustrated in Figs. 3 and 8, and
form the means for operatively connecting the studs 91,
in bushings 106 carried by the plates 21a and 21b. Con 65.. to the plate 21a, the studs being threaded into bores in
necting the ends of the shafts 105 adjacent the plate 21a
the bar 132."
including‘ a pair of axially movable shafts 105 supported
is a cross bar 107 adapted to be rigidly connected to the
Carried on the panel 131 is- an upper limit switch
shafts by threaded end portions 108 on the latter passing
135T, an intermediate or neutral switch 135N, and a
lower or bottom limit switch 1353. Also carried by the
through the bar and secured by nuts 109, the cross bar
being seated on shoulders de?ning the juncture’ of the 70 panel 131- is a pair of operating switches 136 and 137,
threaded portion 108 withthe body of the shaft.
Positioned at the opposite end of each shaft is a com
pressionspring'111 bearing atone end on the adjacent’
bushing 106 and adapted to be. compressed by lock nuts
the former being associated-with the operating lever 8
and‘ the latter with the cap member 9, whereby the
switches maybe operated by their respective associated
members, In, the embodiment of the invention illus
, 112, the.latteLproviding-means for‘adjustingthesdegree 7n trated,»the-switches1136 and 137'are-mounted' on hurl-1
2,933,958
zontally extending brackets 138 and 139, respectively,
NC of the switch 135B. In similar manner, one contact
of the contact LI of the relay NR may be connected to
carried by the panel 131. The switches 135T, 135N and
1353 are provided with operating levers 141T, 141N
and 1413, respectively, each of which is provided at its
the corresponding end of the associated relay winding and
to the line x through normally open contact N0 of the
free end with a roller 142. Cooperable with such roll
switch 135N, normally open contacts of the switch 137
ers M2, as illustrated in Figs. 4 and 8, is an extension
and normally open contacts of the switch 136, all of
member
threaded on the end 126 of the pin 124, a
which are in series with the relay winding and the line x.
lock washer or other suitable means 144 being interposed
The other contact of the contact LI of the relay NR
between the extension 143 and the nut 129, if desired.
may be connected to the line through normally closed
The free end of the extension 143 may terminate in a 10 contacts NC of the switch 135T. Provision is also made
cylindrical portion 145 which is adapted to engage the
for manually actuating the relay NR independently of
rollers 1452 as the piston rod 53 is reciprocated, with the
the
switches 135 by a manually operable switch 147 which
limit switches being operative to control the hydraulic
connects the winding of the relay NR to the line x,
cylinder, and thus the reciprocation of the crimping
thereby actuating the same. The contacts LI of the relay
mechanism 5.
15
BR are also connected in a similar manner, one contact
Electrical control circuits
Fig. 13 illustrates in diagrammatic form a suitable elec
tric control system for the mechanism heretofore de
scribed. Each of the switches 135T, N and B comprises 20
two pairs of cooperable contacts, one pair being desig
nated NC and of normally closed construction, while
the other pair is designated NO and of normally open
construction, so that when the particular actuating lever
141 associated with any one of the switches is opera
tively engaged by the extension member 143, the con
being connected to the winding of the relay and also to
the line x through the normally open contacts N0 of
the switch 135B, while the other contact of the contacts
L1 is operatively connected to the line 2: through normally
closed contacts NC of the switch 135N.
Operation
The general operation of the machine may be visualized
25 from a reference to Figs. 3, 4, 6,8 and 10, Figs. 4, 6
and 8 illustrating different positions of the crimping mech
anism and the seal therein.
The master switch 146 is initially closed to actuate the
NO closed, or in other words, the positions will be re
versed to that illustrated in Fig. 13.
motor 16 and pump 15, the latter being provided with
The construction of the switch 135N and switch arm 30 a suitable by-pass for the ?ow of oil when the cylinder 13
is not actuated. Assuming there is no seal in the jaws 32
14114 is such that the switch is actuated only on upward
movement of the actuating arm 141N and is inoperative
as illustrated in Fig. 6, the operator may close the switch
when the arm is moved downwardly as the piston rod
147, to actuate the relay NR, closure of the lock-in con
53 moves downward.
tacts Ll of which will lock the winding to the line x
Associated with each limit switch is a corresponding 35 to maintain the relay NR actuated. Actuation of the
operating relay, the relay associated with the switch
latter will also result in closing of the contacts U thereof
135T being designated as TR, indicating the top operat
to actuate the valve 17 for upward movement of the
ing relay, the switch 135N with the relay NR and'the
piston rod 53 and crimping mechanism, which will con
switch 1353 with the relay BR. Each of the relays in
tinue to move upward until the portion 145 of the ex
cludes two pair of normally open contacts and a relay 40 tension 143 carried by the pin 124 engages and actuates
winding, one pair of contacts of each relay being desig
the switch arm 141T of the top switch 135T, resulting in
nated Li and being operative, as hereinafter described,
actuation of such switch to close the contacts NO thereof
and open the contacts NC thereof.
to lock in the particular relay when the relay is initially
actuated. The other pair of contacts of each relay is
Opening of the latter contacts will thereby break the
designated U or D, as the case may be, indicating that 45 lock-in circuit to the relay NR, permitting the latter to
those particular contacts involve the actuation of the
fall, While closing of the contacts N0 of the switch 1351‘
directional valve 17 to move the piston either up or down.
will result in actuation of the relay TR, the latter being
The motor 16 is diagrammatically illustrated in Fig.
locked on the line x through the contacts LI of the relay
13 as being of a three phase type and adapted to be oper
in series with the contacts NC of the switch 13513, and
ativeiy connected to a three phase line I. through a suit 50 upon closing of the contacts D of the relay TR the valve
able fused switch box indicated generally by the numeral
17 will be actuated to permit the piston to be moved
146, with lines y and x of the line L being utilized for
downwardly, past the switch arm 141N, which will not
operation of the relays and valve 17.
actuate the switch 135N which action will continue until
As illustrated, one side of both the “down” and “up”
the extension 143 operatively engages the switch arm
circuits for the valve 17 may be operatively connected to 55 14113 of the switch 135B to actuate the latter, opening
the line y as may be one side of each of the relay wind
the contacts NC thereof to permit the relay TR to fall,
ings. The opposite side of the down circuit or" the valve
and closing the contacts NO thereof to actuate the relay
17 is operatively connected to one of the contacts D of the
BR. Upon such actuation the contacts LI thereof will
tacts NC of such switch will be open and the contact
relay TR, the other cooperable contact of the relay being
be closed, locking the relay to the line x through the
operatively connected to the line 3: of the power line, so 60 normally closed contacts NC of the switch 135N, and
that when the relay TR is actuated the valve 17 will be
at the same time closing the contacts U of the relay BR
actuated to a position to permit downward movement of
to reverse the valve 17, causing the piston to move up
the piston and piston rod 53 of the cylinder 13.
In
wardly.
similar manner one contact of the contacts U of the relay
The piston rod 53 and crimping mechanism will move
NR and one of the contacts U of the relay BR may 65 upwardly until the extension 143 engages the arm 141N
be connected in parallel to the other side of the up circuit of the valve 17, the other contact of each pair being
to actuate the switch 135N, opening the winding of the
relay BR and permitting the latter to fall. Upon such
actuation the piston and piston rod, as well as the crimp
operatively connected to the line x, so that when either
of the relays NR or BR is actuated, the valve 17 will be
ing mechanism carried thereby, will stop its upward
actuated to permit upward movement of the piston rod 53. 70 movement as the closing of the contacts N0 of the
One contact of the contact LI of the relay TR may be
switch 135N will be inoperative to continue movement
connected to the opposite winding of the relay and through
the contacts N0 of the switch 135T to the line x, while
of the crimping mechanism until the switches 136 and
137 have been simultaneously closed to closethe circuit
the other contact LI of the relay may be operatively con
to the relay NR. Consequently the crimping mechanism
nected to the line x through the normally closed contacts 75 will stop at the neutral position de?ned by the switch,
assassin
11: '
1351i. ~ However, upon: closing of the_:=swit,ches-.=136;~.and2;
12
ahly- adjpsted to: achievethe desired results, ther¢l2y Jre7
13.7, the'complete cycle will be repeated, the mechanism:
moving‘upward until the switch 135T is actuated, then
versingzthe direction of movement of the piston rod 53
and the, latter and associated crimping mechanism will
downwardly until the switch 1358 is actuated, and up?
wardly to the neutral position when switch 135N is
therewith as ‘the rollers 12,2 begin disengagement from
thereupon begin. to move upwardly.
Simultaneously
the cam blocks 119, the lever 84 will return to its original.
position as illustrated in Fig.3, under action of the spring
During the. cycle of operation the crimping and feed-.
111, the pins .99 retaining the strip of seals in advanced
ing mechanism will complete a cycle as follows: The
position, while the ‘pawl 94 rotates downwardly out of
actuating arm 141N of the switch 135N is so adjusted
engagement with the slots 68 and rides along the bottom
.with respect to the extension 143 that actuation of the 10 ‘ wall 65 of the seal until it moves upwardly under action
switch will take place when the'piston rod 53 has moved
of the spring 96, when the lugs 93 on the pawl reach
upwardly to bring the elements of the crimping mecha~
the juncture of the two seals immediately behind the pins
nism into the position illustrated in Fig. 6. vIn this posi
99.
actuated.
.
tion a single seal 64'will be supported on the horizon
tally extending portions 148. of the, jaws 32, thegportions.
1.49 of the jaws engaging'the side walls 66 of'the seal
adjacent the upper, edges‘ thereof, as clearly shown in.
Fig.6, with the jaws beingslightly closed to exertpres
sure. on the seal and thus hold it in place in the sealing
mechanism. Referring to Fig. 6 it will be noted that when
the mechanism is in suchlposition the rollers 48 have’
moved to a position to'pass above the ends of the guide
rails 49 and at the same time have urged the lower
cutter 37 and plate 38 upwardly,_whereby the pins 31v
are positioned in the bottom of the slot 39 of‘ the respec
tive members.
‘
Y
The crimping jaws will thus’ be in an open position,
holding a seal therein ready for the insertion of the strap
ends to-be joined together, and upon the insertion of the
strap ends in position directlyabove the seal, which would
normally position the hands of the operator to permit
them to readily depress the lever 8 and cap 9 to actuate
the switches 136 and 137, the piston rodt53 will move
upwardly until the extension 143 engages and actuates
the arm 141T of the. switch 135T. During such upward
movement the links 1&6 will rotate the jaws 32 into the
As'the mechanism continues to move upwardly, upon.
" the cutting edge of the .lower cutter block 37 reaching
the connected seal, such cutter will cooperate with the
upper block 58 to sheartheleading seal fromthe strip,
Fig, 4 illustrating the parts as the lowercutter approaches.
engagement with the, seal.
To prevent springingmovement, etc. of the sealasit
is severed from the strip andsthus possibly movement.
out of the desired position for further operations thereon,.
suitable means may be provided for preventing upward
movement of the seal from the crimping mechanism at
the timewof severance, such means in the embodiment
illustrated, comprising a hold-down arm 150 pivotally sup
ported ona pin 150’ carried by an uprightor standard 151 mounted on the plate 3, the arm, ISllbeing biased.
in, a counterclockwise direction as viewed in Fig. 4 by a
torsion spring 152. As illustrated, the arm 15%.is more or
less C-shaped to provide clearance for the adjacent jaw
v 33 ‘and is provided with a generally rectangular shaped
portion 153, which may have rounded edges, engageable
w1th>the seal to initially hold the seal in place. As will
be. apparent from a reference to Figs._6. and, 8, as the.
crimping mechanism continues to move upwardly, follow
position illustrated in Fig. 8, resulting in a shearing and.
ing: shearing of the seal, the adjacent'jaws v33 will engage
deformation of the edges of the seals adjacent the punch.
the- corner 154 of the army 150, camming the arm up"
blocks 33, as clearly illustrated in Fig. 8, and at the. same 40. wardly out of, engagement with the seal and providing
time the rollers 43 will have disengaged from the mem~
bers 37 and 33, which are free to move downwardly out
of the way of the jaws and punch block. The arm 14115
is so adjusted with relation to the switching mechanism
and the extension 143 that actuation of the switch 135T ~
" free access‘to-the seal, withthe strap ends to be joined
after the mechanism has reached the position illustrated
in. Fig, 6, following‘ which the structure isready for an~
other sealing cycle.
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It Will-be noted that thecrimpingandadvancing mech
anism all .Vmay bemountedron'the plate 3'which. may be
will take place when the mechanism reaches theposition
illustrated in Fig. 8, thereby reversing the movement of
readily removed as a unit from the cabinet structure,
the piston rod 53 and crimping mechanism5, the ?rst
the‘topof which may be provided with an, openingunder
action being the engagement of the rollers 48 with the’
neaththe plate 3 of a size to permit passage of the mech
tople'd'ge 5% of the guide rails 49, followed by engagement
anis'm' therethrough, with .the exception of the panel .131v
of the rollers with the'adjacent portion of the respective 505 and associated structure which may be dismounted prior
members 37 and 33, whereby continued movement of.
to the removal of the mechanism from the cabinet. Thus
the piston rod will result in the rollers 48 carnming the
members 37 and 38 upwardly, having the effect of'push
ing the crimped seal and straps off of the punch’ blocks
33 and out of the crimping mechanism.
maintenance problemsare facilitated was one mechanism
may bereadily substituted for another with relatively
minor, substantially quickly‘ performed operations.
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It will‘b’e ‘noted. that as the side walls 66 of the, seal
As the rollers 43 ride o? of the top edges of the guide
are in initiallyopen position at the time the’ strap ends
rails 49the'entire crimping mechanismmay move ,down- '
are inserted therein, the mechanism will readily fold over
such side walls and effectively crimp the seal, even though
wardly, the variousmembers approximating the positions
the width or thicknesses of the straps may vary some
illustrated in Fig. 4, and as the members 37, 38-andpor
tions 35 of the punch blocks 33 pass below the lower 60... what, the action of. the ‘jaws tightly folding and wrapping
edge of slot 27 which as previouslynoted'de?nes the bot
the seal .over. upon theadjacent band ends, followed my
the crimping of the. seals. It will be apparent from the‘
tom of the passageway 63, the rollers 122 will engage
above description that we ‘have provided a novel cumin
the inclined surfaceslZl of the cam blocks V119, urging
ing mechanism in conjunction with novel advancing means
the latter to the left as viewed in Fig. 3, resulting in axial ,
for seals in strip form, which construction 15 relatively
movement of theshafts 1135 in the same direction, which
simple in operation, very rugged and dependable and yet
is operative ‘to rock the lever 84 in a clockwise direction
as’viewed in Fig. 3, resulting in a feeding movement of
may! be readily adjusted to insure satisfactory. e?icient
the’ pawl 94, to advance the strip of seals'the length of a
operation.
single seal,-the pins 99 engaging the rear edge '71 of the
second seal from the leading end and the leading edge
'71- of the third seal, to accurately position. the leading’
7
‘Having, thus described our invention, it is obvious that
‘various immaterial modi?cations may be made in the
same‘without departing from the spirit of our invention;
hence we do not wish'to be understood as limiting our
seal= above the crimping mechanism. Upon consumma
selves to the exact‘form,construction, arrangement and
tion of such advancing movement under the, action of
theirollers' 123, the extension 143 will engage'the; actui 75; combination of parts herein shown and described, or uses
atingl-arm 141B of the" switch 1358-, the arm being‘suit
mentiOnedJ
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13
2,933,958
What we claim as new and desire to secure by Letters
Patent is:
1. In a sealing device for joining a pair of strap ends,
the combination of a seal deforming mechanism com
prising a base plate, having an opening therein, a pair
of spaced parallel side plates associated with said base
plate and extending through said opening therein, each
having a pair of longitudinally extending parallel slots
therein, the slots in one plate being laterally aligned
with, the corresponding slots in the other plate, a pair
of parallel pins extending between said plates with op
posite ends positioned in aligned slots, a plurality of
spaced crimping jaws carried by each pin, punchblocks
interposed between adjacent jaws, a pair of members in-‘
terposed between said jaws and the respective side plates,
one of said members having a cutting edge thereon, said
pins extending through said punchblocks and through
14
van opening therein, a pair of ‘spaced parallel side plates
associated with said base plate and extending through
said opening therein, each having a pair of longitudinal
ly extending parallel slots therein, the slots in one plate
being laterally aligned with the corresponding slots in
the other plate, a pair of parallel pins extending between
said plates with opposite ends positioned in aligned slots,
a plurality of spaced crimping jaws carried by each pin,
punchblocks interposed between adjacent jaws, a pair
10 of members interposed between said jaws and the re
spective side plates, one of said members having a cut
ting edge thereon, said pins extending through said punch
blocks and through slots in said members extending paral
lel to the slots in said side plates whereby said members
15 may move relative to said pins, a reciprocable member
positioned between said plates with its axis of movement
extending parallel to the slots in said side plates, a plu
slots in said members extending parallel to the slots in
rality of links, each pivotally connected at one corre
said side plates whereby said members may move rela
sponding end to said reciprocable member, certain of
tive to said pins, a reciprocable member positioned be 20 said links being connected by a pin to the jaws carried by
tween said plates with its axis of movement extending
one of the ?rst mentioned pins and the other links be
parallel to the slots in said plates, a plurality of links,
ing connected by another pin to the jaws carried by the
each pivotally connected at one corresponding end to
other of said ?rst-mentioned pins, said link connecting
said reciprocable member, certain of said links being
pins each extending parallel to the associated jaw carry
connected by a pin to the jaws carried by one of the ?rst 25 ing pin and having rollers at each end positioned adja
mentioned pins and the other links being connected by
cent the respective side plate, and guide rails associated
another pin to the jaws carriedby the other of said ?rst
with the respective side plates cooperable with said
mentioned pins, said link connecting pins each extend
rollers to control the pivotal action of said jaws about
ing parallel to the associated jaw carrying pin and hav
eir axes whereby said jaws may move into seal-crimp
ing rollers at each end positioned adjacent the respec 30 ing positions when said rollers pass beyond the outer
tive side plate, guide rails associated with the respective
ends of said rails, said slotted members having means
side plates cooperable with said rollers to control the
thereon engageable with said rollers operative to move
pivotal action of said jaws about their axes whereby said
said members toward the free ends of said jaws, during
jaws may move into seal-crimping positions when said
return movement of said mechanism following the crimp
rollers pass beyond the outer ends of said rails, said 35 ing of a seal, for disengaging the same and straps con
slotted members having means thereon engageable with
nected thereby, from the punch blocks.
said rollers operative to move said members toward the
free ends of said jaws, during return movement of said
3. In a band sealing device, the combination of a seal
deforming mechanism comprising a base plate, having
an opening therein, a pair of spaced parallel side plates
associated with said base plate and extending through
said opening‘ therein, each having a pair of longitudinally
extending parallel slots therein, the slots in one plate
parallel slots therein, a cutter block mounted in said
being laterally aligned with the corresponding slots in
transverse slot, cooperable with said base plate to form
the other plate, a pair of parallel pins extending be
a passageway therebctween for a seal, and cooperable 45 tween said plates with opposite ends positioned in aligned
with said cutter member when said sealing mechanism
slots, a plurality of spaced crimping jaws carried by each
is reciprocated, to shear a seal from a strip extending
pin, punchblocks interposed between adjacent jaws, a
from said passageway, a pair of seal guides and a remov
pair of members interposed between said jaws and the
able cover member cooperable with said base plate to
respective side plates, one of said members having a
mechanism following the crimping of a seal, for disen
gaging the same and straps connected thereby, from the
punch blocks, the side plate adjacent said cutter mem
her having a slot therein extending transverse to the
guide seals through said passageway into said mecha~ 50 cutting edge thereon, said pins extending through said
nism, a lever pivotally carried by said base plate on an
punchblocks and through slots in said members extend
axis positioned below the latter, a seal engaging pawl
ing parallel to the slots in said side plates whereby said
pivotally carried by said lever, spring means urging said
members may move relative to said pins, a reciprocable
pawl in a seal engaging direction, cooperable means on
member positioned between said plates with its axis of
said lever and reciprocating member for transmitting 55 movement extending parallel to the slots in said side
movement of the latter to said lever in a seal feeding
plates, a plurality of links, each pivotally connected at
direction as the member approaches the end of its move
one corresponding end to said reciprocable member, cer
ment in a direction away from the free ends of said side
tain of said links being connected by a pin to the jaws
plates, spring means operative to urge said lever in a
carried by one of the ?rst mentioned pins and the other
return direction, a hydraulic cylinder having a piston 60 links being connected by another pin to the jaws car
operatively connected to said reciprocable member, elec
ried by the other of said ?rst-mentioned pins, said link
tro-rnagnetic valve means for controlling the ?ow of ?uid
connecting pins each extending parallel to the associated
to said cylinder, switch means for reversing the ?ow of
jaw carrying pin and having rollers at each end posi
?uid to said cylinder at opposite ends of the travel of
tioned adjacent the respective side plates, guide rails as
said reciprocable member and for stopping the latter 65 sociated with the respective side plates cooperable with
prior to seal crimping movement of said jaws to permit
said rollers to control the pivotal action of said jaws
engagement of the strap ends to be joined with a seal
about their axes whereby said jaws may move into seal
positioned in said jaws, means carried by said reciprocable
crimping positions when said rollers pass beyond the
member cooperable with said switch means for opera~
outer ends of said rails, said slotted members having
tively actuating the latter, and manually actuatable 70 means thereon engageable with said rollers operative to
switch means for actuating said valve means to initiate
move said members toward the free ends of said jaws,
movement of said mechanism toward the seal crimping
during return movement of said mechanism following
position thereof.
the crimping of a seal, for disengaging the vsame and
2. In a band sealing device, the combination of a seal
straps connected thereby, from the punch blocks, the
deforming mechanism comprising a base plate, having 75 side plate adjacent said cutter member having a slot
assassin.
161"
therein. extendingptransverseto the pgrrallehslotstherein, _
and a. cutter block mounted in said'transyerse slot, coop:v
means for; operatively ,7 actuating. said advancing means,
erablerwith' said base plate to form'a passagewayjthere
between for a seal, and cooperable with said cutter mem
her when said sealing mechanism is reciprocated, to shear
deforming mechanism, a reciprocable member operatively
co‘nnected’to said deforming mechanism for actuating the
asealfrom a strip extending from said passageway.
connected to said‘ reciprocable member, electro-magnetic
said severing means, and said deforming mechanism.
6. In a band sealing device, the combination of a seal
latter, afli‘ydra'ulic ‘cylinder havingfa piston operatively
4. in a band sealing device, the combination of a seal
deforming mechanism comprising a base plate, having an ~
valve means forl'controlling the ?ow of fluid to said cylin- v
terposed between said jaws andthe respective side plates,
‘ 7.v In “a band .sealingvdevic'e, thecombination of a base
derfswitch means for reversing the ?o'w offluid to said
opening therein, a pair of spaced parallel side plates asso
cylinder at‘ oppositeends of the travel of said reciprocable
ciated with’ said base plate and extending through said 10 ‘ member and for stopping the latter prior to seal deform
opening therein, each having’ a pair of longitudinally ex-V
ing movement ofsaid mechanism to permit engagement
tending parallel slots therein, the slots in one plate being
of the strapends to be joined with a seal positioned. in
laterally aligned with the correspondingslots in the other
said mechanism, means carried by said reciprocable mem
plate, apair of parallel pins extending between said plates
ber cooperab'le‘with, said switch means for operatively
15.
with opposite ends position in aligned slots, a plurality,
actuating the'la'tten'and switchfmeans for actuating said
of spaced crimping jaws carried by each pin, punchblocks v
valve means to initiate movement of said mechanism to:
interposedbetween adjacent. jaws, a pair of members in-v
ward the seal deforming'po'sitio'n thereof. '
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one of said members having a cuttingvedge thereon, said
having an‘ openingwtherein, a seal deformingmech
pins extending through said punchblocks and through‘ 20, plate
'anism extending. through saido'pening, a reciprocable
slots in saidrmembers extending parallel to the slots in I .
said side plates whereby said members may move relative
tovsaid pins, a reciprocable member positioned between
said plates with its axis of movement extendingrparallel
to, the slots in said side plates’, aplurality of links, each
pivotally connected at one corresponding end to said re
ciprocable member, certain of-said links being connected
by a pin to the jaws carried by one of the ?rst mentioned
pinsand the other links being connected by another pin .7
niemberopcratively connected -.to said deforming mech
. anisrn for actuatingthe latterfa pair of seal guides and
a 'removable'coveri member cooperable with said base
plate to guide seals from asealsupply into said mech
anism, ‘a lever pivotally- carried by said base plate on an
axis positionedb'elow the. latter, a seal engaging pawl piv
o'tally carried byfIsaid lever,ispring'~rneans urging said
pawl in a seal engaging ,directionfcooperable means on
said, lever andj'reciproc'atingfmember for transmitting
to the jaws carried by the other of said ?rst-mentioned’ 30, movement of ‘the latter .tosaidlever in a seal feeding direc
pins, said link connecting pins each extending parallel to
tion as the member approaches the end of its movement .
the. associated jaw carrying pin and having rollers at
in a retroacting. direction, spring means operative to urge
each end positioned adjacent the respective side plates,v
saidlever in a returndirectiomand a pair of spring biased
guiderailsrassociated with the respective side plates co
index pins extending inwardly from said seal guides
35.
operable with said rollers to control the pivotal action
adapted to engagea 'sealto accurately position the lead
of said jaws about their axeswhereby said jaws may move
ing seal, following‘advanceof the strip, insaid deforming
into seal-crimping positions'when said rollers pass beyond
the outer ends of said rails, said slotted members having
V 8. -In a sealing device for joining a pair of strap ends,
means thereon engageable with said rollers'operative to
the combination of aseal deforming mechanism movable
move said. members toward the freerends of. said jaws, 40. froman inoperative position to a seal deforming position,
during return movement of said mechanism following the
areciprocable member operatively connected to‘ said de
crimping of a seal, for disengaging’the same and straps
forming mechanism forf'actuating the latter, means for
connected thereby, from the punch blocks, the side plate
feeding seals into said mechanismyactuating reversible
adjacent said cutter member having'aslot therein extend-v
means operatively connected to said reciprocable mem
ing transverse to the parallel slots therein, a cutter block 45.. ber,’control me‘an'sforreversing,said actuating means at
mechanism.
mounted in said transverse slot, cooperable' with said. base
plate to form a passageway therebetween for a seal, and
coo'perable with said cutter member when said sealing
mechanism ‘is reciprocated, to- shear'a seal from a strip
extending from said passageway, 1a pairof seal guides and.
a removable cover member cooperable with’ said;base
plate to guide seals through said passageway into said r
mechanism, a lever pivotally carried by said base plate .
on an ‘axis positioned below the. latter, a seal engaging
pawl pivotally carried by said lever, spring means urging
said pawl in a seal engaging direction,’ cooperable means
on said, lever and reciprocating member for transmitting
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opposite endsof the travel of said reciprocating member,
and. forlstopp'ing the latterprior to'seal deforming move
ment ofjsaid'jmechanism' to- perrnit engagement of the
strap'endsio bejoined with a seal positioned in said mech
anism,_mefa_n's', carried, by, said reciprocable, member co-e
operablejvith said control,yrrieansf , for operatively actuat
ingthegl'atter, andjmea'ns for‘ initiatingmovement of said
'mechanism toward the seal deforming position thereof. '
9. In'fa band'sealing device, the combination of a base
plate havingan opening therein,‘ a seal deforming mech
anism?extending, throughisaid opening, areciprocable
memberoperativ'ely connectedfto, said deforming mech
movement of the latter to saidlever in a. seal feedingv
anism for actuatingthe latter, a pair of seal ‘guides and a
direction as the member approaches the end of its move
removable cover, member cooperable with said base plate
60.
ment in a direction away from the free ends of ,said side
vtov guide seals into' said-,mechanism, ajlever pivotally
carried ,by said base. plate ‘on ‘an axis positioned below
the latter, a seal engaging "pawl pivotally carried by said
lever, spring means’ urging said pawl in a seal engaging
5. vIn a band sealing device, the combination of a seal
direction, cooperable'ineans on 'said lever and reciprocat
deforming mechanism, a reciprocable member operatively
connected to said deforming mechanism for actuating 65, ing member. for transmitting movement'of the latter to
said lever’in a seal feeding direction as thernember ap
the latter, a seal guide voperative to guide seals into said
proaches the end, of'its movement in a retroacting direc
' mechanism, means for advancing the leading seal of strips
tion,‘ and spring means ioperativeto urge 'said'lever in a
of connected seals into saidv mechanism, a pairof spring
biased index pins extending inwardly from said seal guide,
10.- In 'a sealing'device forfjoining a pairof strap ends,
adapted to engage said strip of seals intermediate two ad,
the combination of abaseplate having an opening therein,
jacent seals tov accurately position the leading. seal thereof
plates, and spring means operative to urge said lever in a
return direction.
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retnrn
following advanceof the‘ strip, in said deforming mech
anism,_means for severing the leading seal from: the strips
direction.
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a’ seal deforming mechanism extending through saidiopenp
ing, aireciprocable member operatively connected ,to said
snbs'eqnent to’, its, insertion into saidv mechanism, andv 75 -. deforming mechanism; for- actuating_,the1atter, a Pair, of.
17
2,983,958
seal guides and a removable cover member cooperable
with said base plate to guide successive seals connected
together to form a strip into said mechanism, a lever
pivotally carried by said base plate on an axis positioned
manually actuatable control means at opposite sides of said
sealing mechanism for controlling said power means,
below the latter, a seal engaging pawl pivotally carried
by said lever, spring means urging said pawl in a seal
is operated.
engaging direction, cooperable means on said lever and
sealing mechanism including a pair of crimping jaws
and arranged to require the means at each side to be
simultaneously actuated before said sealing mechanism
14. In a band sealing device, the combination of a
reciprocating member for transmitting movement of the
‘adapted to crimp a seal on a pair of band ends, said mech
latter to said lever in a seal feeding direction as the mem
anism being reciprocable along an axis, means for effect
ber approaches the end of its movement in a retro'acting 10 ing partial closing of said jaws to support a seal therein
direction, spring means operative to urge said lever in a
when the sealing mechanism is in a ?rst predetermined
return direction, a pair of spring biased index pins ex
position on said axis, means for feeding a seal from a
tending inwardly from said seal guides adapted to engage
supply thereof to’ said mechanism when the latter is in a
said strip of seals intermediate two adjacent seals to_ac
second predetermined position on said axis, automatic
curately position the leading seal thereof following ad 15 means for controlling the reciprocation of said sealing
vance of the strip, in said deforming mechanism, a hydrau
mechanism from the ?rst predetermined position to the
lic cylinder having a piston operatively connected to said
second predetermined position, and its return to‘ the ?rst
reciprocable member, electro-magnetic valve means for
predetermined position, and means for controlling the
controlling the ?ow of ?uid to said cylinder, switch means
seal crimping movement of said jaws when the mech~
for reversing the ?ow of ?uid to said cylinder at opposite 20 anism is in said ?rst predetermined position.
ends of the travel of said reciprocable member and for
15. In a band sealing device, the combination of a
stopping the latter prior to seal deforming movement of
sealing mechanism adapted to crimp a seal on a pair of
said mechanism to permit engagement of the strap ends
aligned band ends, and including seal deforming means
to be joined with a seal positioned in said mechanism,
and a co'ope'rable pair of clamping jaws, said deforming
means carried by said reciprocable member cooperable 25 means and jaws being reciprocable along an axis trans
with said switch means for operatively actuating the latter,
verse to the axis of said pair of band ends and said jaws
and switch means for actuating said valve means to ini
being supported for movement relative to said deforming
tiate movement of said mechanism toward the seal de
means for crimping a seal positioned on the latter, when
forming position thereof.
the sealing mechanism is in a predetermined position
11. In a power actuated band sealing device, the combi 30 relative to said strap axis, means for feeding a strip of
nation of a reciprocable sealing mechanism, power means
connected seals relative to said mechanism when the
for actuating said mechanism, means for feeding a seal
latter is in another predetermined position relative to said
into said mechanism, independently operable means at
strap axis, to position the leading seal of the strip in oper
opposite sides of said sealing mechanism for controlling
ative position in the sealing mechanism, means for sever
said actuating means to crimp a seal therein, and addi 35 ing such seal from said strip when said sealing mechanism
tional means for controlling said actuating means to re
is moved from its position during seal feeding to an inter
ciprocate the mechanism when desired.
mediate positio'n, automatic means for controlling the
reciprocation of said sealing mechanism from seal crimp
12. In a power actuated band sealing device, the com
bination of a seal crimping mechanism, power means for
actuating said mechanism, and independently operable
manually aetuatable control means at opposite sides of
ing position to seal feeding position, and its return to the
40 intermediate position, and manually actuatable means for
said sealing mechanism ,for controlling said actuating
means, and arranged to require the means at each side
to be simultaneously manually actuated before said seal
ing mechanism is operative, to crimp a seal therein, and 45
means for automatically feeding a seal into said mech
anism subsequent to the crimping of a preceding seal.
13. In a power actuated band sealing device, the com
bination of a seal crimping mechanism, po'wer means for
actuating said mechanism, and independently operable 50
controlling the movement of said jaws into the seal
crimping position from said intermediate position.
References Cited in the ?le of this patent
UNITED STATES PATENTS
1,764,911
1,984,652
2,097,946
2,218,023
2,298,658
Treat _______________ .._ June 17,
Ott _________________ __ Dec. 18,
Childress _____________ -._ Nov. 2,
Doolittle ____________ __ Oct. 15,
Spencer ______________ __ Oct. 13,
1930
1934
1937
1940
1942

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