US957954A - Shoe-sewing machine. - Google Patents

Description

J. J. HBYS. SHOE SEWING MACHINE. APPLIUATION FILED sBPT.a,19oa.

Patented May 17, 1910.

il sums-snm 1.

J. J. HEYS.

SHOE SEWING MACHINE.

APPLIoATIox FILED snPT.e,19oa.

957,954. Patented May 17, 1.910.

6 SHEETS-SHEET 2.

J. J. HEYS. SHOE SEWING MACHINE.

v APPLICATION FILED SEPT. 8, 1903. 957,954. Patented 17, 1910.

6 S SHEET 3.

lJ. J. HBYS. SHOE SEWING MACHINE. APPLIoATIoN FILED snrT.a,19o3.

957,954.- Panted May .17, 19,10. Y

8 SHEETS-SHEET J. J. HEYS.

SHE SEWING MACHINE.

APPLIOATION FILED snPT.a,19o3.

Patented May 17, 1910.

6 SHEETS-SHEET 5.

gave Q? 2f.'

J. J. HEYS.

SHOE SEWING MACHINE.

APPLIQATION FILED sBPT.B.19s3.

957,954. Patented May 17, 1910.

il, #4MM/la..

UNLTED STATES rATnNT OFFICE'.

JonN AJ. HEYS, or LYNN, MASSACHUSETTS, ASSIGNOR, :BY MESNE ASSIGNMENTS, To

BBESNAEAN SHOEMCHINERY COMPANY, or LYNN, MASSACHUSETTS, a Conro- Be it lmo'wn that I, JOHN J. HnYS, of L nn,in the county of'EsseX and State of ssachusetts, have invented certain new and useful 'Improvementsin -Shoe-Sewing- Machines, of which the following is a speclj cation.

1o to the' insole ofa shoe is one of the general This invention has relation to Wax-thread chain-stitch shoe-Sewing machines, of which a machine for stitching the welt and upper class. Hitherto it has been customary 1n such machines for the-needle'to draw lfrom the wax-pot the amount of thread necessary for forming the stitchwhile the ,thread is under tension; but as the lmovement of thefneedle is uniform, it is necessiryf-tol provide aftakeup, which also draws from the waxfpot more l or less thread ,necessarylfor the complete work, b -the'provision `o:fmech.anism con- .trolled y' the welt-guide, or other member bearing against the work, for automatically measuring t'o the needle the exact amount of thread necessa :for the formation, of the stitch,.irrespect1ve ofthe thickness of the .any

work at the particular' point where the needleis to enter it.

A further object of the invention is the provisionof mechanism to lock the .thread after it has been measured to the needle, this locking place, if desirable prior to the .1' g

According to the lillustrated embodiment of the nventiomI'- depend upon the needle to set the stitch asl it moves away from the` work, but it will be readily understood how` ever, that this entails nosevere strain upon the needle since the roper amountof thread has been already prior to its withdrawal through the work with the loop laid in its-barb.

Specoation of Letters Patent. Application 1ed- September 8, 1903. Serial No. 172,352.

movement of the needle or other-mechamsm `used 'in theformation or Setting of elivered. to the needle,`

. SHonSEwiNG MACHINE.

Patenten May 171910.'

when the thread is drawn through the work 1t 1s not chafed. i A

Referring to the drawings z---Figure'-v l represents a portion of a wax-thread, cha'in- 60 stitch shoe-sewing machine embodying fea'- tures of the invention. Fig. 2 re resents the automatic thread delivering mec anism coltrolled by the welt-guide. Fig. 3re resents part of a shoe with the'needle int e work 65 and the loopsl inthe act of passing. around 'y the needle, and alsoillustrates the yielding tension'device and the truck. Figs. 4, `5',' 6

and 7' are views re resenting the Stepstaken` -I 1n the formation o a stitch. Fig. 8Sheet 1, 70

represents a Section onthe line- 8`8 -of F ig. 1. Figs. 9 and 10 represent another embodiment'of the invention, which will be subse- `quently explained.A Fig. 11. isa section through the line ll-llvof Fig. '2. Fi 12 75 1s a detail Sectional view of the looper s owing means for reventing abrasion ofthe thread passing t rough the looper. Figfl is a side elevation oi;A the machine showing the operating or sewing mechanism thereof mounted upon its support at an angle 'to ahorizontal plane.

On the drawings a Sewing machine has not been illust-'rated in its entirety, but only those parts which coperate with the present 1n- 85 vent-ion have been Shown,

Before proceeding with a detailed description of the parts constituting the machine, it will be noted that in Fig. 1 the operating or Sewing mechanism ofthe machine is 90 shown as occup ing a substantially horizontal plane for t e reason that it was necessary to so show the Said mechanism in order to fully show the various parts constituting the mechanism 'embodying features lof my 95 invention upon a single sheet ofdrawings.'

The awl a and the needle b are' mounted i 'and actuated by mechanism` which is welllmown, any suitable means being'provided for effecting the automatic feed of the worlr` "v at the proper time. The welt-guide is indie@ cated at c, being adjustably mounted in the end of a sliding bar c The said bardis ac,- l tuated as ordinarily by a lever Vc2 operated? by a cam onthe camshaft e. The exact constructionof the welt-guide itself is not shown, but any gf the usual forms may be employed for tliis purpose. The barpc B a contrivance common to many sewing 55 mac ines the' loop is so laid in the barb that i the awl for locking the gage d are released' orward causes moved rearward by the lever c2 at the roper time, and is held yieldngly forward) by a spring o3 so that-the end of the guide bears against the work and holds the welt inproper position withrelation `to the upper -and the insole,- on the last.l

matically loc ed during the formation and setting of the stitch, by pawl and ratchetmechanism, such as has inmachines of this type. The locking pawl for the bar c is indicated at c, and it an by t e lever 4c actuated by a cam on the shafte. f

, f: indicates :the looper which Vlays the thread .around the needle and in the barb thereof, said looper being operated by any suitable mechanism such 'as ordinarily ernm* on the 'shafteas shown in-Fig. 1. When ployed'for this purpose.- 4 J designates an aperture. through the looper through'which the thread'passes.-

fffdesignatesa roller mounted in the lower end of said looper, the periphery o f the said roller occupying a position adjacent \to thel said aperture.' The threadfis conducted through the aperture of the 'looper and asses aroundlthe roller V2, and as it is fed `whereby chating. of the thread is prevented.

; @indicates the channel-guide which enters the channel, andagainst which the work .is outwardly drawn to position it with relation to the stitch mechanism, any suitable mechanism being employed for actuating said channel-guide. In the actual operation the work is held as shown in-Fig. 1, by the hands of the operator, with the channel-guide in the channel, and the work resting against the gage d. The said guide giurnishes an abutment for the work, and is aniinportant factorinj; positioning the welt-guide, as will .be explained. y

,FA to 6 inclusive.` This device is well l -known, and is operated by 'any -suitable mechanism.

- As thus far explained the vmechanism does not differ essentially from machines whichhave been on the market for a great many ears,` except in the construction of the ooper, as above described.

For' the purpose of automatically delivering to the stitch forming mechanism a quantity of thread predetermined as to its length according to the thickness of the work, theV following differential mechanism Vis employed :-In the rear ofthe machine, or

any other suitable location, is a supplyI of een used heretofore d -may be engaged the. toothed en pawl les mountedupon a rotary member Ja having attached thereto an the said-.roller 'to rotate' thread A1, which'is caused to lbe treatedb? any suitable waxing device, of vv rhi'ch-a'v wel thread'is passed through the waxin device,

and thence to a' heel or truck la, w ose periphery is groove'd .for the reception`fthereof.

This truck. is relatively large in diameter and it is journaled upon a 'shaft k' mounted 1n a' suitable support.- v.It "is adapted Vto loosely rotate about its shaft andis actuated with a -step b y `step movement, the length of which is variable, byy suitable clutch mechamsm. T he said'truckjto this end is formed with a series of ratchet teeth k2 with which of@ sliding arm 165, said member being journaled u on a shaft k" The armA k? sgconnectedA by two ivoted links lo k7 withithe armmof a be -crank lever mf,` the otherjarm m2 of which is prowith aroller mu resting .against a cam thelei'ermf is4 actuated, as will be explained the member kf-isf'actuat'edft'o causefa `parta remata-"ef asi-miek'fk."

n' which -adjus tabl `longitu 'Secured Vto the b i"-"cv 's a* Sending arm finally 1 with an f' obtuse angle-1 asshown." The longer straight portionv of the slot is indicated at m andthe upwardly. 'curved shorter portiongof the slot isindicated at y, as clearly shown in Figsland 2." The portion of the slotextends vsubstantiall parallel tothe line of movement of the ower end of the arm m of the lever m, whereas the portion y of the lot is substantially concentric to the stud lo? which connects the link lo with the arm kf.

'The stud kg'which connects the links k6 k1,

extends into the slot fn/ so,'that it. is vguided in4 its movements by said slot. When .the arm m of the lever'm is traveling rearward -the arin will'be rotated in the directipn of the arrow 2 in Fig. 2 so long as the 'stud 7c travels in the eiit'ective portion of said slot n but as soon as the stud enter's the portion gl/"of said slot the movement of the armlcs will cease, since the stud. k in traveling through saidportionof lthe slotl will swing about an arc substantially concentric with the stud k", thus rendering ineffective or idle, or converting into lost motion the movement of the-said stud lo while travelino" in the portion y of said slot. Nowfrom thisv descri tion it will be apparent that the position oi) the=bar of and the-ar'mgn, and therefore the slot n', 'will determine 'the length of the partial' rotationtof the' truck k. The' portionV a: ofthe slot'n is 4 naturally oi such length that the stud lc never travels from end to end thereof. The ratio of the truck a to the rate et or clutch carriedtlieretion of the arm n is one eighth and ositiv, so that said ator holds and consequently truck l by, is two to one,consequently`if the lposi- Y of an inch' in the rear of its preceding osition, the truck will deliver two eighths o an inch of thread more than was' previously delivered. Assuming for instance, that the endfo'f the welt-guide be held' bythe work one ei hth of an inch away from the end'of the c annel-guide, (whichis the stationary abutment against which the work is pressed,) -the stud k will move but an eighth of anv inch in theslot 'rb' before it enters the portion y so as to-impartone ei hth of4 an inchrotation to the clutchlcs an therefore cause the truck to rotate vtwo eighths of an inch and deliverV the portion of two eighths' of an inch of thread; As will from the foregoing, the o erative connection between the'thread-truc clutch or pawl k3 and its actuating'lever mis permanent.

' clutch or pawl is at all times connected-todand'under the control ofsaid lever, which control modiiiedby the slot n. vlVIoreove'r, the angle between the. ortions :u and y of the' slot n provides fon limiting the eectual travel of the .pawl k3 the rotativeaction of the From the truc' or' wheel k4 the thread Av passes under an idler truck o journaled on an'arm 0 suitably supported, and thence over two trucks at the front prortion of the machine as indicated at p p. -he truck p isv on a shaft or stud p which carries the spring tensioned arm g on the endrof which vis a truck g resting'upon the length of thread between thetrucks p -and p'; The arm p3 which carries the truck pf immovable at alltinies. From the `truck p the thread passes to the looper fas i1lustrated. i

`In the operation ofthe machine the o a'shoe in position with the en "of the' .channel-guide resting 'in the bottom of the channel; To place it in this rPosition the gage dl and the welt-guide are oroed rearwardly and then areallowed to move forward, being locked in 'position after they reach the forward end of their movement. As soon as the positions of the welt-guide and the arm n are determined b the work the lever m is Vactuated to partially` rotate the truck k and deliver therefrom a length of thread whichis required for the stitch, said length being substantially equal to twice the distance between the end of the channel-guide and the end of the welt-guide, or twice the thickness of the work plus about .three times the distance between the centers of the holes -in the work through which the needle-passes. Then the needle is passed through the work in the .position shown in Fig. 1 and the thread is laid in the l bag) by the looper, rearward and draws the loop taut through the work. The needle has gainiform move-, l

ment as'usual,

further be apparent the needle then moves thread required by the thickness of the work is' delivered, the stitch is set taut by the rear- -ward' movement of the needle.

As will be appreciated by those skilled in the art, the control of the thread measuring the welt guide will give that delicacy and uniformity of control desirable in determining the needle action. Such sensitive control 1s ge' 1 For the:purpose of locking the thread to is necessary, there is interposed between said truck and. the spool, a4 lock which is op'e'rated before any thread is taken by an?y mechanism. Said lock is constructed as fo vlows:-In'a suitable bearing 'r is a sleeve lever`m,fthis sleeve is held againstlrotation and also against longitudinal or 4axial movement, .by suitable means. .the sleeve and keyed thereto so as to hold it from`rotation, is a s aft 'r2 having .on its end a coarse thread gra. At its other end the shaft is'provided with va washer r* which forms one member of a clamp, the other member ofwhich isfo'rmed by the headed side a of the sleeve 1" said sleeve formed in Vtwo parts if desired as shown. The washeris held adjustably in place by nuts r r2 spring 1's is also attached to the. end of the shaft r2 soy as to draw it firmly in the direction shown, to make sure of releasing the thread for the next feeding operation. v j L s' indicates the hub ofv a'lever sthe free endL of which has -a roller bearing-against the .cam m. .'The said hub s is internally thescrew rs. The shaft 1' is' heldagainst rotation but is free tomoveto a limited extent longitudinally, so that when the arm the shaft r2 relatively thereto to open or close the clamp members 'r4l 1", the spring 'l'B serving to maintain the hub s against a flan on the sleeve 'r'. It will be'observed that the roller m3 on the arm "mz is in rear theV arts so that the thread will be lmeasured to t e needle before it is locked. This lock- .ing -device is interposed between the spool Aand the Wax-pot as indicated by the course of the thread' n Fig. 1. The wax-pot and the spool are not illustrated upon the draw: ings, but their relative location will be understood from the In this-machine there is no need of a positive take-up, for the reason, as stated, that a predetermined 'quantity' of thread :autothe amount of thread that is to be supplied to .not possible in a thread measuring -means revent the truck from delivering more than being of the roller 82 on the arms', this is to timeforegoing description.'

and since the exact length of means by the light and work feeling action o f r' upon which is pivoted` or fulcrumed the Passing through tapped so as to form a nut complemental to or lever s is rocked it acts as a nut to move v iso' a i @67h54 Que result as achieved by the construction. ,as previously described,. 1s that when the needle is out of the Work the ages are iinlocked, the tension truck is. ree to rotate .and thethread isiunlocked so that the operator may draw out from 'the wax-pot as much thread as may be desired. A machine possessing the characteristics previousl described has many advantages over mac ines of the chain stitch type as previously constructed. 4

The mechanism is simple and not likely to get out of order, and the seam is uniform throughout, the mechanism for imparting a differential rotation to the truck serving to deliver only the thread that is neededac cording to the thickness of the work, so that no stitch is drawn tighter or is looser than the preceding stitch.

It is qui-te apparent that the invention is not limited to the details of construction which I haveffseen fit-to illustrate and .describe, as many and various changes maybe' made in the measuring and thread-locking mechanism without departing from the spirit. and scope -of the invention. Forinstance, in" Figs; 9and l0 another form rof mechanism for actuating the truck or imparting a differential rotation thereto, is shown. In this case the truck lo is provided with' a laterally projecting annular an e /l which is half the diameter of the truc To cajot 'with this iiange'is a friction clutch member t which is segmental in shape and is providedivith tivo clutch members t t which straddle the flange k. The lower end of the segmental clutch t is connected to t. e lever m, corresponding to the lever m in Fig. l, by a link consisting of a tube t2 and a headed rod t3 extending; tliereinto and bearing against'a spring t4. The spring t4 is strong enough so that when the/lever m6 is moved to the left the lower end of the clutch t will be moved to the left so as to cause the clutch members t t to grip the flange la and partially rotate the truck k, but when the rotation of the truck is stopped the spring will yield to permit the lever fm,

to continue its movement Without breakage. To stop the rotation of the truck when the proper quantity of thread has been delivered, a lever u is fulcrumed on a stud u. The upper end of said lever has a pin and -slot connection with the sliding Welt-guide c arrier c. The lower end of -said lever has pivoted thereto a block u2 through which a bar a3 is adapted to slide, the end of the said bar a3 is connected to the upper end of the clutch t. by astudu. Adjustably secured to said rod is a stop u? the end "of whichis apted to engage the block u2. A spring4 is connected tothe upper end of the clutch t to hold it yieldingly tothe. left and to return vit to its osition after it has been caused to parta y rotate the truck. With this construction the location ofthe block u2 determines the len th of movement of the clutch t and permits the truck to deliver the exact amount of'thread re uired by reason of the thickness of the 'wor for the next stitch. v

I to have it"understood that the phraseology which is employed is simply limitation, and that in lieu of the particular stitch formin mechanism which has been illustrated an described,`other forms may be used with equal facility. v

Having thus explained the nature of the invention, and described 'a way oi constructing and using the same, although without attempting to set forth alll of the forms in. which itmay be made, or all of thednodes of its use, I declarelthat what I .cIaim*"ls:-`

1; In a shoesewing machne, theconibi- Y nation of'stitchforming mechanism, afrnov-l` able thread delivering device, an actuatiiig lever, means or imparting-:to said lever uni\\ form movements, operating means for -the for the purpose of description and not vfor thread delivering device, jointed connections .y

pivoted to saidmeans and to the actuating lever, and iding means for chan g the direction o travel ofthe joint in sai jointed connection for the. purpose of delivering variable lengths or quantities of thread to the needle. 2. In a shoe sewing machine,`the; combination of. stitch forming mechanism, amovable thread delivering device, an actua lever, means for imparting to said'lever.u1i'i form movements, 'operating meansfor the thread delivering device, jointed connections pivoted tosaid means and to the actuatingever, a sliding bar carrying the- Welt4 'd o, and aii'arm connected thereto provid with a deflecting guide for changing the direction of travel of the joint in said jointed connection for'the pur ose of delivering variable lengths or quantities of thread to the needle.

3. In a shoe sewing machine, the combination of stitch forming mechanism, a movable thread delivering device, an actuating lever, means for imparting to said lever uniform movements, o ratingrmeans for the thread delivering ivice, permanent and iexible jointed lc onne ':tions pivoted to said' means and to the actuating ever, a sliding bar carrying the welt'guide, and an arm hafving an angular, slot connected to said sliding bar, said slot being engaged by the joint of said jointed connection for changing the direction of'itravel "of the jint of said connection for the purpose of actuating the thread delivering device variable' dista ces. 4. In a shoesey'u'ing machine, the combination of Stitch forming mechanism, 'a mov- 'iso able thread llelivering device, an actuati lever, means for imparting to said lever form movements,.o eratlng means for the thread delivering device, permanent and flexible jointed connections pivoted to said means and to the actuating lever, and means including a guide having a cam slot for changing the path of travel ofthe joint in said jointed connection for the purpose -of delivering variablelengths or quantities of thread to the needle.

VV5. In a shoe sewing machine, the combination of stitch forming mechanism,- aro-A tative thread delivering truck, an actuating lever, means for imparting to said lever 4uniform movements, a welt guide, a welt guide carrier, jointed connections pivoted to the actuating lever and to the thread delivering truck for operating the latter from the former, and means includin a c am Islot engaged by the joint in said connection controlled by the welt uide 'carrier for render ing more or les'sf'o the uniform movement of the actuatingf-lever effective in causing rotative movement of the truck.

' 6. In a shoe sewing machine, the combination of stitchforming mechanism, a ro-` tative thread delivering truck, an ,actuating lever, means for impartin uniform movements to said lever, a we t guide, a welt. guide carrier, an arm having an angular slot and controlled by the welt guide carrier and connections pivoted to the actuating lever and to the truck, .the joint in said connections engagin the said angular slot and bein deflected t ereby whereby more or less o the uniform movement of the actuatin lever is made effective in rotating the truc 7. In a .shoe sewing machine, the'combination of stitch forming mechanismya rotative thread delivering truck, an actuating lever, means for imparting uniform movements to said lever, a welt guide, a .welt guide carrier, an arm having an angular slot and controlled by the welt guide carrier, connections between 'the-actuating. lever and truck, said connections engaging the said angular slot whereb more or less of the uniform movement o the actuating lever is made efective'in rotating' the truck, andan automatic thread locking device which prevents thread from being drawn from the truck during the stitch settingoperation.

8. In a sewing machine, thecOmbination with stitch-formmg mechanism, of a movable thread-delivering device, an actuator for said device having a constant movement,-

a jointed connector pivoted to said actuator an'd to said device and having provision for lost motion, a work `contacting member, and means. including an angulanv guide controlled by said member and arranged to engage said connector and deflect the joint thereof to limit the eifective movement ofv with said member and `arranged to engage said connector to limit the eiective movement thereof.

10. In a sewing machine, the combination, with stitch formingmechanism, of a movable thread-delivering device, an actuator for said device having a constant movement, means for ositively and permanently connecting said) device and actuator, said means vhaving provision for lost motion, said parts being constructed and arranged tocause movement of said thread-delivering device during thefirst part of the movement of said actuator, and means controlled by the work for engaging said connecting means to prevent movement of said thread-delivering device during the latter part' of the movement of said actuator. i

ll. In a sewing machine, the combination,

with stitch forming mechanism, of the thread truck k, the actuating lever m, the links 7:, le operatively connecting said thread truck and lever, the arm n, controlled as to its vposition by the Work-and provided with the cam slot n', and the' stud o9-connecting said links and engaging said cani, slot.

In testimony'whereof Iv have aiixed my signature, i presence of two witnesses.

JOHN HEYS.

Witnesses:

M. BJMAY, J. P. IDE.

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