US1286869A - Shoe-sewing machine. - Google Patents

Description

1. v. ALLEN & E. E. ORR.

SHOE SEWING MACHINE. APPLICATION FILED JAN. 10. 1916.

1,286,869. Patented Dec. 3, 1918.

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jmwzzz'fani MW .l. V. ALLEN & E. E, ORR. SHOE SEWING MACHINE. APPLICATION FILED JAN. 10. 1916.

1,286,869. Patented Dec. 3, 1918.

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l. V. ALLEN & E. E. ORR.

suos sawmc MACHINE. APPLICATION .HLED JA N-0.19M. 1,286,869, Patented Dec. 3, 1918.

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5 TE STATES PATENT JOHN V. ALLEN, OF SOUTH WEYMOUTH, AN D EDWARD E. ORR, OF WEYMOUIH, MASSA- CI-IUSETTS, AS-SIGNORS, BY MESNE ASSIGNMENTS, TO UNITED SHOE MACHINERY CORPORATION, .PATERSON, NEW JERSEY, A CORPORATION OF-NEW JERSEY.

SHOE-SEWING MACHINE.

To all whom it may concern:

Be it known that we, JOHN V. ALLEN and EDWARD E. ORR, citizens of the the United States, residing at South Weymouth and Wey-mouth, respectively, in the county of Norfolk and Commonwealth of Massachusetts, have invented certain new and useful Improvements in Shoe Sewing Machines; and we hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to shoe sewing machines, and more particularly to shoe sewing machines of the type having a curved hook needle and a work feeding awl, and em ployed in sewing outsoles to the Welts of welted shoes.

In the manufacture of rubber soled welted shoes, outsoles having block heels formed integral therewith are used to a considerable extent by manufacturers. A; rubber outsole is sewed to the welt of the shoe in substantially the same manner as the outs'ole of an all leather shoe, except that a longer stitch is ordinarily employed. In the operation of stitching a rubber outsole having an attached heel to the welt, the first stitch is, of course, placed as closeas possible to the breast line of the heel. The outsole stitchers at present in common commercial use comprise a curved hook needle and a work feeding awl which during each cycle of operations after piercing the work at a point to the rear of the needle in the direction of feed, moves laterally to a limiting position in line with the needle to feed the The needle then follows the awl through the work asthe awl retracts from the work. The work is inserted in the machine with the parts in the positions which they. assume at the point in a cycle-of'opcrations where boththe needle and awl are retracted out of work-engaging position;

This occurs when the awl is in its'limiting rearward position in the line of feed ready to pierce and feed the work. -When a rubber outsole having an integral or attached heel is sewed to the welt of the 'shoeon such 'a machine as heretofore constructed, the sole is inserted between the work support and presser 'foot in position with the breast of the heel resting close up against the" left end Specification of Letters Patent.

seam to be formed close to the breast Patented De,c.. 3, 1918.

Application filed January 10, 1916. Serial No. 71,307.

or side of the presser foot. When the machine is started the awl pierces the work and feeds the same the distance of a normal stitch length before the needle pierces the work. In placing the shoe in the machine the shoe cannot be positioned so that the breast of the heel lies in the plane of the needle, since the presser foot extends tothe left somewhat beyond this plane. The result is that the first stitch is formed more than the normal stitch length from the breast line of the heel, and the appearance of the stitching is greatly impaired. The presser foot of the type heretofore employed on these machines extends some distance to the rear of the sewing point, and as the seam is being completed the heel strikes the presser foot and thus prevents the last stitch from being formed close to the breast of the heel. V

The primary object of the present invention is to provide an attachment for outsole shoe sewing machines for use in sewing rubber or other outsoles having a heel attached to enable the first 'and last stitches ofthe of the heel. With the above object in view,the. invention comprises the improved and novel features' hereinafter described and pointed out in the claims, the advantages of which will be obvious to those skilled in the art.

The invention will be readily understood froman inspection of the accompanying drawings illustrating the invention in its preferred form, and the following detailed description. 7

In the drawings, F gure 1 is a view in side elevation of an outsole shoe sewing machine to which the invention is applied;

Fig. 2 is a detail plan view partly in sec.- tion illustrating particularly the feeding mechanism of the machine;

Fig. 3 is a detail view in side elevation partly in section of the mechanism shown in Fig. 2; i

Fig. 4 is a detail view in front elevation illustrating the construction of the presser foot;

Fig. 5 is a diagrammatic view illustrating the needle and the parts of the feed mechanism in the position which they normally and awl are in retracted position;

ing the part projected through Fig. 6 is a view similar to Fig. 5 illustrating the. parts in the position which they occupy when p in retracted positions and-the mechanism for imparting feeding movements to the awl has been adjusted to render the same inoperative, before the machine is started; and Fig. 7 is a view similar to Fig. 5 illustrat in the positions which they assume in the first cycle of operations just before the needle pierces the work.

The sewing machine illustrated in the drawings. is a wax thread, curved hook needle, lock stitch machine for sewing outsoles to the welts of welted shoes, and except a hereinafter described, has substantially the same construction, arrangement and mode off-operation of parts as the machine illustrated and described in the application of Fred AshWortlnSerial No. 585,116, filed October 3, 1910, upon which Patent No. 1,169,909, dated February 1, 1916, r was granted;v This machine comprises a curved hook needle 2, a loop taker 4, a work feeding awl 6, a work support 8, and a presser foot '10. During each cycle of stitch-forming operations ofthe machine, starting just after the loop has been pulled from the loop taker and drawn down into the work to complete I the stitch, the awl pierces the work and then moves laterally into line with the needle to feed the work.- The awl then retracts from the work followed closely by the needle which is the work into posltion to receive thethread from the looping device. After the needle, retracts from the work holding a loop of thread in its hook, the loop is lifted bythethread lifter into the range of action of the hook of the loop taker. The loop is then carried over the looptaker, and is pulled from the loop taker and drawn down into the Work by the action of the takeup. p

The needle 2 is secured to a needle carrier 14 mounted to turn co-aXially with the awl. The needle carrier is oscillated to actuate the needle as above described through concrank.

nections from a continuously rotating These'connections comprise a .bell crank lever 16, a link 18 connectmg one arm of the bell crank with the needle carrier, and .alink' 20 connecting the other arm of the bell crank with'the crank 22 carried by the continuously rotating shaft 24.

The awl 6-ismounte'd onthe awl carrier 26 which'is secured to a rod or pin 28 which forms a pivot for'the carrier. This rod is be capable of oscillating and longitudinal movements in two station- 'ary arm 30 projecting forwardly from the frame of the machine. The awl carrier is oscillated'to impart oscillating mo ements Jtothe awl by means of an owl driver 32 mounted to oscillate co-axially with the awl carrier, the awl carrier having a sliding both the needle and awl are 1,2se,see- I driving engagement with the aWl driver.

The mechanism for actuating the awl driver withthe awl driver, a lever 42, a link 44 connecting the other arm of the bell crank.

, 36 with the forward end of the lever 42, a

continuously rotating crank 46, and a link 48 connecting the rear'end of the lever 42 with the crank.

The pin 28 is moved-back and forth longitudinally to impart lateral feeding and return movements to the awl and awl car-- rier by means of two pivoted levers 52 and 54 arranged substantially parallel to each other, the forward ends of which engage slots in bearing pins or buttons 56 provided with conical endsengaging conical recesses in the ends of the pin. The lever 52 is cam actuated, and the two levers are connected by a link 58 so that the levers are actuated in unison, and the movements of the'pin 28 in bothdirections are produced by the movements of thelevers. The lever 52 is extended rearwardly beyond its pivot, and is pivotally connected'to one member 60 of a toggle lever comprising the two pivotally connected members 60 and 62. The middle joint 64 of the to a link 66 to .one arm of a bell crank cam lever 68, the other arm of Which is provided with a roll 70'engaging' a cam groove :72 in a cam disk 74 attached to the main shaft 7 6 of the machine. The movements of this bell crank lever impart through the connections-1 above described positive movements in both directions to the levers 52 and 54, and to the pin 28 upon which the awl carrieris mounted. To enable the extent of the longitudinal movements of the pin 28 to be varied, as may be desiredto produce the required lengthof stitch,'the member 62 of the toggle lever is pivotally connected at 76 to a yoke 78 which is pivotally mounted above and below the toggle lever to turn on an' aXis 80 as is best shown in Fig. .2. By swinging the yoke about its pivot, the position of the toggle leveris changed so that when the toggle is actuated by the bell crank68. more or less movement is imparted to the lever 52, and -consequently to the pin 28 of the awl carrier. The pivot'of the yoke 78 is arrangedto be I in line with the pivotal connection 64 between the members 60 and 62 of the toggle lever when said leverqisin its; extreme rearward position,

movement. An adjustment of the yoke 78 about its pivot to vary the length of feed does not, therefore, vary the, position of the awl at the end of its feeding movement, so

ggle lever is connected by that with all: lengths ofiife'ed the aWI iS RL- Ways moved to-the same pointdi'rectly in" line With-"the needlea '1 Toenable the length of feed to be" readily adjusted b v-t-he oper ator to give the-desired number of stitches to: the incheither on d iffe'rent shoes or on difl'erent' ipants ofth'e same shoe; theyoke' 78 is provided with an a 1 m 82 connected bya link 84 toone arrrr o'E'a-bellcran'k lQV-B)? 86; the other arm of .Whi'ch is connected by a link 88 tea h'an'd ope-ratedlever 90rwhich is arranged inconvenient po'sition to be moved by the operator. The'hand lev'er 90 extends over a perforated gage plate 9% attached to the frame of the machine inthe holes in Which pins may be -insertedon each side of thelever 90- to limit-movement of the lever im'eith'er direction; 1

The mechanism for oscillating" the-needle and aw-l and.-"the-'mechanisin' for "imparting feed" movements to the *aWl -have' substan tia-lly the same construction and; mode a of operation as the 'corresponding lnechanisms illustrated in the 'Ashworthfiapplicatmm re ferred' tdab'ove.

To permit the shoe to be"inserted in op erating position the machine, or'to pef mit' the shoe to be" removed from the ma? chine when seainhasbeen completed, It is" essential that the partsof the machine be" placed in the-,"positions" Whi'ch'itheyassume at point in a cycle of operation when" the needle and awliare both retracted or dis en'gaged from the work" As hereinbefore stated, inf machines of this t ypevthe needle follows the and through the work as: t'hei awl" retracts. from the 1 work anduthe' needle reaches-a 'retractedipositiononly after the awl has move'd 'babk'fi-om its position' in nae- With theneedle to"its-startingposltionin. the

line of feed. The needle an d avtl are; there andthe parts of the feedmech'a nism in the positions-shown in this figu-re,-and=the' machine is then started, the 'aWl' pierces thework and vfeeds the Work 'a normail stitchlength before" the needle penetratesthe work. In sewinga'rubber sole having an integral block heel or a sole having an attaohed heel' to the Welt oftheshoe, the-sole" andwelt ofthe shoe are inserted between the work support and presser footyan'd theshoe is positioned so that the breast of the heel rests against-theleft endtot the resser-foot,

Which,:for:ithis kind. of Work, islipreferably,

made ws'omewhat shorter; .t'hamtthat usually employed: to I enable zthe'tsbreast' of: the; heel to: lie close' totathelplaneofithe needletf. To; prevent the: awl: ftomsfeeding:therwork a clistance' equali to the'tl'engt'h ofraone stitchv before ":the al-needle .pierces'w.thev work and thei'rebyltlocating.thefirsttstitchca feed length iii-om the breast of the sheel lthe feedamechanism is: adjusted tbeforeznthefimachine is started toil place thef Jawl in line twiths the needle and tofiirenderr the feed mechanism inoperative-until afte'rthe' needle .has pierced thetwork imthezfirst; cycle of operations, and mechanism i sfprovicled which acts automati; cally tolrestorelthe feed-mechanism to it's;normfa l operationaften the: needle'haspenetrated the workr v In thie construction illustrated-the lever 90 is-held inifonward or: normaLposition byimeeh'anism. comprising a? yoke 94 pivotally connected by 'aiipin 96 withv the hand 'lev'er 30;:andsa rod. 982 engaging at its forward end in: spaeed bearings in the yoke 94; and having its-'"downeturn'ed-areariend engag'ecl' in anvropen ing inxthextrame. @The" forwardor norm al osition ofthe; lever 90 isidetemnined by. an adjnstabler'stopi collar.

100' mounted. on thei'fonwardiend ofithezr-roidl 98; against; WhichLth'e yoke 9e: is held by a;

eoiled spring IOQj'surroundingI:thez rocl. and

. interposed between the yoke 94"andi' alfcollarg onithe rod. With:'thisrconstructionuthe:-

1104: length: ot'ifeed is varied: by adjusting. the

s'topl co'l larg-lflfllongitudinally: of therodi 98.. As has been explained above, .thezqream.

lever 68in: actuating; thei togglie lever'60T62 to'i oause vthea iawl' to feed sthe- :kvvorl'o; always movesathepivotalieonnectiom6 k atit'h'e cen Mal :j'oint. ot': the -itogglef into:.lineatwith athe tion of thefiyokeai With thezzp'arts ina'the positionlshown in: Figii 5i before startingzthet machine the operator'- seiz'estthe lever and" swings this leverltor then'eamunt'i'l'l itsv movement" is limited by. its; engagement "with 1 a stop pinplaced in the perforated gageplate 92 tomthesrean of the -leverf :This movement of 'thei'h'an'd leverr'turns' 'the: bell:

crank-c 86::and the yokev 78 and; swingsthe: pivotal: connection" between thepmember 62:

ofith'e :toggle levers and the yoke about the axisotthe yokez. fTh'e stop 95--is located so that iw henii the movement of the Ira-rid: lever; is arrested by: the: 'stoptthe swinging move-q ment of? thei yoke- 7 8 .hasqbroughiz the-pivotal connection: between the member 62 ofi'the. toggle? lever :and: the'ivyoke to a position such: that the linez'connecting the: 1 center: of thispivotali :connection with; the :vcenter. of" thepivotal iconnection between thei member 60' of the toggleandssther lever 52: liesl midway; between 'the'center ofi the central. joint of. theto'ggle' and'ithe axis of'athe yoke: 82; as: shown in'Fig. 6'; Thisvbrings the awlvinto line with: themeedle as :Wlll; be: readily ,seen' pivot 'o f the yoke: 78irregardless of,the; posi=" are 68 is then moved from needle has pierced by an inspection of Fig. 6. \Vith the. parts of the feeding mechanism in therelative positions shown in this figure, upon starting the machine the .awlwill remain substantially stationary in the'line of feed-during the movement of the cam lever 68 which in the normal operation of the feeding mechanism produces the lateral feeding movement of the awl. As the machineis started. the awl pierces the work and the cam lever .the position shown in Fig. 6 to that shown 1n Fig; 7, this move-:

ment of the cam lever in the normaloperw tion of the machine imparting the feed movement to the awl. the cam lever movesv the central joint 64 of the toggle lever from the position shown in Fig. 6 to a position in: line withtheaxis of theyoke 7.8 as shown in- Fig. 7 The moveinentof the cam lever, therefore, im: parts substantially no movement to the-awl, and the awl is still .in line with the needle when the needle pierces the work. 4

In order to holdthe hand lever 90 in the position illustratedin Figs. 6 and 7 until the the work in the first cycle of operations, the catch 106 is secured to the.

hand lever, and as the lever is swung. to the i rear into engagement with the stop pin 95,

this catch engagesthe rear end of the catch plate 108 secured to chine. The engagement of the catch 106 with the catch plate 108 holds the lever 90 in its rearward positionuntil after the machine is started.

As soon as the needle has pierced the work in the first cycle offoperations, the hand lever 90 is automatically released and moved forward to normal positiomthereby restor ing'the parts of the feed mechanism to their normal operation. Tothis end .a release plate'110 is secured to the forward endof one arm of the lever auxiliary take-up. The forward end of this 1 arm is lifted during eachcycle of operations of the machine just after the needle has pierced the work. The inturned lower end of the release plate 110 carries an abutment screw 114; which is in position to engage the. underside of the rear end of the catch 106 when this catch is'engaged with thecatch plate 108. Just after the needle has pierced the work in the first cycle of operations the forward end of which the plate 110 is secured is lifted there-. by lifting the plate and ment screw 114: with the underside of the catch 106. to release the catch from the catch plate 108. Upon the. release of the catch from the catch plate the lever 90 isswung forward by the action of the spring 102 until the yoke 94: engages with the stop collar 100, thereby restoring parts of the feeding mechanism to their normal positions so that the normal feeding operation of this mechanism This movement of the frame of the ,ma-

112 which actuates the the arm" of the lever 112 to engaging the abut-.

- erations to feed the work,

of the presser foot until the breast of the heel engages the forward edge of the foot, and the seam may be formed close up to the breast ofthe heel.

. Having explained the nature and object of the invention, and having specifically described a machine embodying the invention in its proper form, what is claimed is l. A shoe sewing machine, having, in combination, a needle, a work feeding awl moving during each cycle of operation into a positionin line with the needle to feed the. work, mechanism for imparting feed ,move-' ments to the awl, means'for rendering said mechanisminoperative until after the needle has pierced the work in the first cycle of operations, and means acting automatically to restore said mechanism to its normal operatlOIL.

I 2-, A shoe sewing machine, having, in cornbination, a needle, a work ing during each cycle of operations of the machine into a position in line with the needle to feed the-work, mechanism for imparting feed movements to the awl, means for placing the awl in line with the needle and for renderingsaid mechanism inoperative until after the needle has pierced the work in the first cycle of operation, and means acting automatically to restore said mechanism to its normaloperation.

3. A shoe sewing machine, having, in combination, a workfeeding awl, a needle arranged to followthe awl through the work, mechanism for moving the awl into a position in line with the needle during each cycle of operations to feed the work, means for rendering said mechanism inoperative until after the needle has pierced-the work in the first cycle of operations, and means acting automatically to restore said mechanism to its normal operation.

4.. A shoe sewing machine, having, in combination, a needle,awork feeding awl,mechanism for moving the awl into a position in line with theneedle during each cycle of-opmeans for rendering said mechanism inoperative until after the needle has pierced'tlie work in the first cycle of operations, and machine controlled means for restoring said mechanism to its normal operation.

5. A shoe sewing machine, having, in combination, V a needle, a work feeding awl,

feeding awl move mechanism for actuating the awl to feed the work, means for interruptin the feeding operation of the awl until a ter the needle has pierced the work in the first cycle of operations, and means acting automatically to restore the awl to its normal operation.

6. A shoe sewing machine, having, in combination, a needle, a work feeding device, mechanism for actuating the work feeding device normally to feed the work during each cycle of operations, means for interrupting the feeding operation of the work feeding device until after the needle has pierced the work in the first cycle of operations, and automatically controlled and operated means for restoring said device to its normal operation.

7. A shoe sewing machine, having, in combination, stitch forming devices including a needle, a work feeding device, mechanism for imparting feed and return movements to the work feeding device comprising a toggle lever, a connection between one member of the toggle lever and the work feeding device, a pivoted support for the other member of the toggle lever, means for actuating the toggle lever, means for adjusting the support about its pivot to render said mechanism inoperative until after the needle has penetrated the work in the first cycle of operations, and means acting automatically to restore said support to its normal position.

8. A shoe sewing machine, having, in combination, stitch forming devices including a needle, a work feeding device, mechanism for imparting feed and return movements to the work feeding device comprisinga toggle lever, connections between one member of the toggle lever and the. work feeding device, a support for the other member of the toggle lever, means for actuating the toggle lever, means for moving the support about an axis passing through the center joint of the toggle when the feeding device is at the limit of its return movement to render said mechanism inoperative until after the needle has penetrated the work in the first cycle of operations, and means acting automatically to restore said support to its normal position. I

9. A shoe sewing machine, having, in combination, stitch forming devices including a needle, a work feeding device, mechanism for imparting feed and return movements to the work feeding device, comprising a toggle lever, connections between one member of the toggle leve r and the work feeding device, a support for the other member of the toggle lever, a cam actuated lever, a link connecting said lever to the central joint of the toggle, a hand lever and intermediate connections for adjusting the support to render said mechanism inoperative until after the needle has penetrated the work in the first cycle of operations, and mechanism acting automatically to restore said support to its normal position.

10. A shoe sewing machine, having, in combination, a needle, a work feeding device, mechanism for actuating the work feeding device normally to feed the Work during each cycle of operations, means for adjusting said mechanism to render the same inoperative until after the needle has pierced the work in the first cycle of operations, and machine controlled means for-restoring said mechanism to its normal opera tion.

11. A shoe sewing machine, having, in combination, a needle, a work feeding device, mechanism for actuating the work feeding device normally to feed the work during each cycle of operations, means for rendering said mechanism inoperative until after the needle has pierced the work in the first cycle of operations, and means including a timing device for restoring said mechanism to its normal o eration after the needle has pierced the work.

i 12. A shoe sewing machine, having, in combination, a needle, a work feeding device, mechanism for actuating the work feeding device to feed the work, means for adjustlng said mechanism to render the same inoperative until after the needle has pierced the work in the first cycle of operations, a catch for holding said mechanism in an inoperative condition, and machine operated means for releasing the catch after the needle has pierced the work;

13. A sewing machine, having, in combination, stitch forming devices including a needle, a work feeding device, mechanism for actuating the work feeding device normally to feed the work durin each cycle of operations, means for rendering the work feeding device inoperative to feed the work at the beginning of the sewing of a seam, and automatically controlled and operated mechanism for restoring the work feeding device to its normal operation during the first part of the seam formation.

JOHN V. ALLEN. EDWARD E. ORR.

Copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents,

- Washington, D. 0."

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