US1692015A - Stitching machine - Google Patents

Description

Sheets-Sheet Nov. 20, 1928.

E. LESCHHORN STITCHING MACHINE Filed Oct. 18, 1923 1,692,015 E. LESCHHORN 'sTITHING MACHINE Nov. 20, 1928.

Fi1ed`0ct. 18, 1923 4 Sheets-Sheet 2 Nov. 2o, 1928. 1,692,015

' E. LESCHHORN STITCHING MACHINE Filed oct. 18, 1925 4 sheets-sheet 3 Nov. 2o, 1928.`

E. LESCHHORN lSTITGHING MACHINE 4 Sheets-Sheet. 4

Filed Oct. 18, 1925 machine.-

Patented Nov. 20,1928.

; UNITED STATES 'PATENT OFFICE.

ERNEST LEsoIIIIoRiL or CIAIIOAGO,v ILLINOIS, AssIGNOR 'ro IiA'rHAIvIy MAIIINERY oOMrANmA CORPORATION OE ILLINOIS.

s'IITcIIING MACHINE. y

lApplication filed vOctober 18, 1923. Serial No. '6G9,240.

rhis linvention relates to a wire stitching @ne of the objects of the present invention is to simplify and Increase the elilciency ot ythe wire stitching machine by providing` a construction which will sinmltaneously stitch a plurality of staples in spaced relation. y

A further object ot the invention is to provide a single driving-mechanism and a single head upon which mounted an .improved construction of a plurality ot stitch forming and driving devices, which are operably driven by a common driving mechanism.

These and other objects are accomplished by providing a construction and an arrangement by means of which aplurality of staple formers and drivers are connecte-d together Vin such a manner that the mechanism ordinarily used toA drivea.v single former and driver are employed to drive a plurality of the same, and yet maintain them at a considerable distance apart.

Reterringto the drawingsy f Figure 1 is a Yliront elevational 'view ofmy improved stitching machine; y

Fig. 2 is an enlarged fragmentary front elevational view showing the manner in which thetwo staple forming and drivinO mech-` anisms are connected together andfoperably driven by a single driving mechanism;

Fig.r 3 igan enlarged cross-sectional view talren on the lines 3-3 in Fig. 1;

Fig. l is a cross-sectional view ta the lines Ll-Ll in Fig. 2,; y. Y l

Fig. 5 a top plan view ot the detailec construction ot my improved staple forming anddriving mechanism showing the same removed from the machinejv y Y Fig. 6 is an enlarged iront elevational view ot the staple forming mechanism Fig. 8 is a side elevational view of Fig. G;

.9 is a cross-sectional view taken on the lines 9*-9 ot Fig. 6 showing the manner in which the two staple tormers are Secured togetherrand l s Fig. `1() isa side elevationalview ofthe staple driver. y

The present invention is applied to wire stitching machines of the general character well known in the art, and only that portion or t-he machine is shown in the drawings to suciently illustrate the presentlinvention and its relative parts.l

The Whole stitching mechanism, which constitutesthe head,`is supported on the horizontally disposed supporting trame or arm l5, which rotatably supports a shaft 16 in a horizontal bore 17. Secured tothe forward end of th-earml is a vertically disposed plate or head 18 upon which the operative parts of the stitcher are mounted. A reduced portion oi' the shaft lyindicated at 19, extends past the plateY 18, `and has secured thereto by meansof a key not shown acam 20. Securely which thel staple ormers 26 and 27 areV `mounted for vertical sliding movement. The

lforward or frontyside of the staple ormer's 26 and 27 are provided with vertically eX tending channels or grooves 28 and 29 respectively, which are adapted to reciprocally receive staple drivers 80 and 81.

My improved construction of space- d staple drivers 30 and 31 are .operatively 'connected together by cross-bar32, which has its outer ends connected by means of bolts 33V to the K upper ends of the drivers 30 and'31 respectively, as clearly shown in Fig. 2. Extending downwardly from thecenter portion of the cross-bar 32 andtormed integrally therewith is a guiding member 35, which is adapted "I'or vertical reciprocatory movement in the groove or recess 36 vformed byv two oppositely and vertically disposed guiding bars 36. secured to the block 23 by means of screws 23.

From this construction it will be seen that the guiding membergl of Athe cross-bar 32 positively insures the4 vertical reciprocation of the driving members, and eliminates the possibility of these members becoming cramped in their respectivevertical .grooves Within Which they operate. f The drivers 3() and 31 are driven by means oi a pitman 3T having one end thereof` connected at 38 tothe cross-bar 32, and the other end connected ke centrically to the cam 2O at 39. Thestaple formers 26and 27 are of the usual form, and are similarly connected togethery by cross-bar 40. The cross-bar 40 has downwardly extending therefrom and formed a groove il-2`formed in the front side of the block 23. Staple formers 26 and 27 kare secured tothe cross or T-bar l0 by means of screws 48'. The staple formers arel operatively driven in their respective grooves or channels by means of a roller 44 pivotally secured on the rear side vofthe cross-barV i0, and

Acompression springs 48, having one 'oftheir ends seated inv thebores llof the -anv'ils 41:7,

and the other ends thereof engaging thek washers 5() secured tothe rear side of the block n3. The anvils i7 are provided .'ith the usual horizontal grooves '5l through which the wires are fed and held during the time they are being formed into staples. Pivotally mounted forwardly of each of the anvils 5l are the .usual staple supporters 52, which'afre normally pressed into the position shown in Fig. Bby pins 'and compression springs 54 seated in the sockets 55 of the outer easing 56, Secured to the outer legs of tlie'staple formers 26.*and 27 are the usual cutting knives 57. Positioned adjacent the anvils lTand extending through the outer rsides ofthebloclr28 is the usual'ifeedtubes 58y held in relatively fixed position by clamping bolts 59.l y

My improved doublefstaple former vand staple driver construction is provided with the wire feeding mechanism described and claimed lin my previous application, Serial No. 660,763, filed September 4, 1923. This.

wire feeding mechanism comprises two oppositively disposed feeding rolls 60 and 61, which are operatively driven through a train of gears connected with the powersliaft v16. The feeding'rolls 60 and Glare provided with the usual feeding cams 62 and 63 respectively. The feeding roller 6,0 may vbe adjustedwith respect to the feedingroll 61, so that the length. ofthe wire fed may be varied when it is desired to vary the length ofthe staple. The feeding roller 6() is rotatablymounted on a bracket 64 -pivoted to the main frame of the machine, and thefree end of the bracket lis resiliently pressed bymcans of a spring 65 and thumb screws in such a manner that the feed roll 60 yieldingly impinges the wire fed between the feeding cams 62 and 63 when the wire is fed to thc staple forming and driving mechanism. Y c

In the present macl ne, the usual straightening device '67 for straightening the wire` as the same is fedinto the feedrrol'ls is Vprovided,`and also the usual checking device '68 is provided which lprevents the withdrawalv o f the wire frointhe staple former and driving mechanism after the same has been fed;

In the construction' vof my impi'oved double stitchingmachine, it will, of course, be l e understood 'thatI have provided two sets of feeding rollers on the opposite sides of the K machine, 'and so positioned that each .of these feeding mechanisms are driven from the common power shaft.

Itfwi'll lalso be understood that the Wire is ,fed from each of these wire feeding mechaonerofwhich is shown, which are supported by an arm formed integrally withl 'hei niet@ le ln'the operationy of the above describeddefvice, it will, of course,vbe understood 'that l.n ofthe wires are fed from their respece spools through the wire straightening device past the wire 4checking device, where it `is engaged bythe feed rollers and forced through the wire guide tube into the horizontal grooves 5l ofthe respective'anvilst?, after which'the staple Iformers 26 and 2,7 are Vactuated in their fdownward movementto cut these wires by the knivesl 57.' On a fur.,-

ther downward. movement ofthe staple formers the outer lends of the -wire lare bent-*bv the legs vof the former `which engages vvthe `outer sides of the anvil, land `|forms thewire `into a staple. At the completion of the'staple forming movement'the staple drivers are operatively driven downwardly, forcing the anvils l? into the block 23t against the coinpression ofthe spring i8 byI contact-ing 'the' 'beveled forward edge of each of the anvils. After the anvils have been withdrawn from the staples the drivers drive the stapl'esinto `the work supported beneath `Vthe 'machine It, of course, being understood that the supporters 52 support the'st'aples afterthe; anvils are withdrawn, andA continuefto support the staples until they are driven into the work by the drivers. n i

Frein the above construction it lwill seen that l have providedV a very simple and Acflicient double staple forming and 'driving inechanisn'i, and oney in whichthe staples may be driven into the worlcandfat thesamept'im'e be spaced apart at a considerable dist-ance.

It will alsobe understood thatthis same principle of construction may be employed with a greater number ofstaple forminga-nd drivin-g mechanisms opera-ted "by a single power shaft and cam mechanism, alud-yet retain the essential features of my invention. In other words, more than two 'staple for-iners and Chivers-could' be mounted'olr,asiinii lar cross-bar and operatedl just. as: efficiently kkme iso

be fed in an angle of substantially l5k degrees to the face of the cani.y By this arrangement any number of staple formers and driving ineclianismsmay he operated on a single cross-bar. l

lt is, therefore, Within the contemplation of my invention to cover all structures em.

bodying this essential feature of construction.

`What l claim as my invention and desire to scure by Letters Patent is: y

l. A ivire stitching machine coniprising'a frame, a drive shaft l cated centrally in said. frame, Wire feeding mechanisms located on the opposite sides of said shaft and opteratiif'elvrconnected therewith, staple forming and di'iving mechanisms located on the opposite sides of said shaft, cross hars slidably mounted on said frame for connecting said forming and driving mechanisms, and lmeans for connecting said bars to saidishaftin a manner to actuate said forming and driving mechanisms in (2o-operation withV their respective Wirefeeding mechanisms.

2. A Wire stitching machine comprising a frame, a drive shaft mounted thereon, phirality of Wire feeding mechanisms opera-v tively driven said drive shaft, a cam fixed to said shaft and a plurality of staple forming and driving mechanisms located on opposite sides of said shaft, and operatively connected to said cam for operatively drivingv said staple forming and driving mechanisms. y 3. A Wire stitching machine comprising aV frame, a drive shaft mounted thereon, a plurality of Wire feeding mechanisms operatively driven hy said drive shaft, a cam fixed to said drive shaft, a cross-har connected with said cani having a plurality of Wire staple formers secured thereto, a second cross-har connected vith said'cam having a plurality of staple drivers secured thereto, and means for operatively driving all of said staple formers and drivers. l

4l. A Wire stitching machine comprising a frame, a drivingI shaft mounted thereon, a plurality of Wire feeding mechanisms operatively driven by said drive shaft, a cani'iixed to said drive shaft, a cross-bar connected with said cani having 'a plurality of Wire staple formers secured thereto, a second crosshar connected With said cam having a plurality of staple drivers securedthereto, said staple drivers mounted for reciprocatory movement in grooves formed in said staple formers, and means for operativelyv driving all of saidstaple formers and drivers.

5. A ivire stitching machine comprising a frame, adriveA shaft mounted thereon, a plurality of Wire feeding mechanisms operatively driven by said drive shaft, a cam fixed to said drive shaft, a cross-bar mounted on said frame for vertical reciprocatory movement and operatively connected to said cani, a plurality of staple formersconnected to said cross-bar, a second cross-bar mounted on said frame for vert'cal reciprocatory movement and operatively connected to said cani, a plurality of staple drivers connected -torsaid second cross-bar, and means for opment and operatively connected to said cani, av

plurality of staple drivers connected to said secondl cross-bai', a guiding member formed integrally with each of ysaid cross-hars to insure vertical reciprocation of said bars, and means for operatively driving all of said staple forniers and drivers. y

7. A Wire stitching machine comprising a frame, a stitchei head mounted on said frame, a drive shaft mounted in said frame and stitcher head, a pluralityof Wire feeding mechanisms mounted on said head at opp0- site sides of said shaft and operativelycoiinected to said shaft ina manner to'he driven thereby, a plurality offstaplev forming and driving mechanisms mounted on said head at opposite sides of said shaft and cooperating 'With said Wire feeding mechanism, and means mounted in said head and operatively connected to said staple forming and driving mechanisms and to said shaft in a manner to cause said forming and drivingniechanisms to be actuated by said shaft. y

8. A Wire stitching machine comprising a frame, a stitcher head mounted on said frame, afdiive shaft mounted .in said frame and stitcherliead, a plurality of Wire feeding mechanisms carried by said head and operatively driven hy said drive shaft, av-cain fixed to said shaft, a plurality of cross hars operatively connected to said cam in a manner to be reciprocated vertically thereby, and a plurality of staple forn'iing and driving mech-- anisnis connected to the respective cross bars at opposite sides of said shaft and operatively driven thereby.

V9. A Wire stitching machine comprisinga supporting arm, a stitcher head secured thereto, a drive shaft mounted'in said arm and head, a pair of Wire feeding'mechanisms posi-y tioned on said headA opposite sides of said shaft and operatively connected thereto in manner to be driven thereby, a pair of staple forming and driving mechanisms slidahly mounted on said head at opposite sides of sai'd shaft and in the radial planes of said feeding mechanisms, a plurality of cross bars for con-V necting ksaid staple forming and driving mechanismsP and means for operatively eenneeting said bars to said shaft ina manner to aetuate said staple forming` and driving mechanism. y

10. A Wire stitchingmachine Comprising' a supporting arm, a stiteher head secured thereto, adrive shaft mounted in said arm and head, a pair ef Wire feeding meehanismspesitiened on said head at opposite sides of said shaft and operatively connected` thereto in a manner to be driven thereby, staple formers slidably mounted on said head atv opposite sides of' said shaift and in the radial planes of said feedingl meehanisnls, staple drivers slidably mounted in said iiorn'iers, a cross bar i'or eonneetino' said ormers, a second cross bar for Connecting` said drivers, a cam member secured to said shaft, and means for operatively connecting' said Cross bars and member ina manner to cause the reeiproeation of said Cross bars for aetuafain said sta )le formers and drive-rs.

11. A Wire stitching machine comprising a to, a drive shaft mounted in said arm" and head,V a pair ef Wire ieeding mechanisms positioned onsaid head at oppesite sides of' said Y slidably mounted in said ormerS, a Cross bar for connecting said ormers and having ya eentral portion slidably mounted on said head, a second Cross bar for Connecting saidr drivers and havingl a central portionslidablynionntedv in a guideway forinedfon said head, aeam member secured to said shaft, vand means 'for operatively connecting; said cross bars and member in a manner to Cause the reciprocation of said cross bars l'or actuatingsaid staple ormers and drivers.

ln testimony whereof I have signed my name to thisspeeifieation.

ERNEST LESGI-IHORN,

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