US1521288A - Sewing machine - Google Patents

Description

Dec. 30. 1924.

J. GOULDBOURN ET AL SEWING MACHINE 3 Sheets-Sheet 1 1 Filed Feb. 3, 1921 rauezilam Dec. 30. 1924.

I 1,521,288 J. GOULDBOURN ET AL SEWING MACHINE Filed Feb. 5. 1921 3 Sheets-Sheet 2 J. GOULDBOURN ET AL SEWING momma Filed Feb. 5, ,1-921 5 Sheets-Sheet a Patented Dec. 30, 1924.

" NETE ST *nrhhlt aosnrn GOU'LDBOUR-N Ann FRED risks,

UNITED SHOE amernunar ceases-arrest,

PORATION OF NEW JERSEY.

SEWING MACHINE.

Application filed February 3, 1921; Serial No. 442,040.

T all w homc't may concern Be it known that we, JOSEPH GouLDBoUn and F nun RIoKs, subjects of the King of Great Britain, residing at Leicester, in the 5 county of Leicester, England, have invented certain new and useful Improvements in Sewing Machines; and we do 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. 7 y This invention relates to chain stitch or other straight hooked needle-boot or. shoe sole sewing machines with a rotary horn peculiar in that the horn rises and falls in accordance with variat ons in thickness of the work and thereby controls movement of the needle. A machine so organizedis illustrated and described in the patent to Bates No. 1,080,879, dated December 9, 1913, and it is the principal. object of the present in vention to improve this machine. The machine of the aforesaid specification was intended to operate at unusually high speed and the principal objects of the present invention are to provide various improvements increasing the reliability of operation of such a machine at high speed, its endurance and improving the character of the work produced by it. i

There will be described hereinafter in detail and by way of example, a machine which embodies in a convenient form the various features of the invention which features will in the. art from this description and which include improved means to control the positioning of the work during stitch formation, improved means to facilitate the handling; of the work as the sewing is carried round the toe of a boot or shoe and particular and novel organizations of the various groups of parts tending to rigidity, simplicity, durability and access as well as certain time relationships between the movements ofthese parts which trials have shown us to be particularly advantageous.

According to one importantfeature ofythe invention there is provided a device oper ating in time relation to otheroperations of the machine to exercise flocking action on the horn.

, According to another feature of the invention the power shaft which carries the rerespectively become evident to those skilled and control mechanism and horn mechanism of the general character of that described in said Patent No. 1,080,879 with reference to Figure 1 of the drawings thereof, the main shaft speed being controlled by the rotation of the horn in the manner indicated in the patent to Bates No. l,1-1i0,3.i9, dated hlay 25, 1915. and by mechanism generally similar to that described in the last mentioned patent although amongst other differences a clutch mechanism as illustrated and described in the patent to Jerram 1,124,620, dated Jan. 12. 1915, is employed, In addi tion the machine embodies work feed and work clamping mechanism of a character similar to-that illustrated and described in the patent to Goddard and Jerrnm No. 1, 353,827, dated September 28, 1920..

In the accompanying drawings,

Figure 1 is a side elevation of the machine with parts of the casing broken away to show the mechanism; Fig. 2 is a front view, partly in section. of the upper part of the machine; Fig. 8 is a part sectional view of one form of horn-lockingmechanism; Figs. 1, 5 and 6 are detail views showing" an alternative horn-locking' mechanism; Fig. 7 is a vertical sectional view. partly in elevation, of the lower portion of the base of the machine illustrating particularly the treadle mechanism; Figs. 8 and9are plan and side elevations respectively of link mechanism connecting the horn and the needle bar.

The vertical rod 3 rising at the rear of the machine column l and by which the vertical movement of the horn 5 is transmitted to the needle controlling mechanism has its upper end pivoted at 7 to the rear end of a horizontal lever 9 the opposite end of lot which'is emanated on the machinehad at 11, and which intermediate its ends has fulcrumed to it the lower end of an up- Wardlyextending link 13 the upper end of which is forwardly, curved and forked at 15 to receive between its forked end por tions the rearward end of a further link 17 which link end as well as the fork end" of the vertical link is pivoted to a transverse pin 19, the end portions of which form pivots for a link pair 21 the opposite ends of which are pivoted to the corresponding 7 forks 23 of a forked bell crank lever, pivoted, to the frame at 25 and terminally forked at 27 to embrace the link 29 by which it is connected to the needle bar 31 and to Whichit is pivoted at 33. V s

i The bell cranklever is formed by the fusion of two of the corresponding arms of'two bell crank levers side by side so as to leave between the other two arms and the fulcrum members'of the levers a space into which may rise the forward end of the needle-actuating rocker '35 between the forkedportions of the forked forward and slightly uprising? end of which rocker the forward end of the link 17 aforesaid is pivoted at 37.

The rocker is pivoted intermediate its ends to the machine head at 39 and rearward of itsgpivot is forked to allow of the passage through itof the upwardly exing between discs on the camshaft 4:73

tending link 13 and to receive between its forked ends a universal connection by which it'is coupled to the lower end of a connecting rod 41 the upper end of which em-.

braces a ball-shaped crank pin 43 extendwhich runs from front to rear of the machine in the head 49.

7 On the stud 51 by which the lower end of the link 13 aforesaid is fulcrume'd to the horizontal lever 9 is a head engag ng a horizontal slot 52 in a vertical-rod 53 guided n u per and lower hearings in the head. The upper end of the vertical rod has formed on it a flat surface; which during a part of the cycle of the machine,

is engaged by a cam 55 to lock the rod against downward movement and through the connections aforementioned to lock the horn against upward movement. Thecam pro iect's through an opening: in the upper bear ng of the vertical rod. into enqagement with the rod and 18 formed on a lever .7, :V- formed 1n one of the two faces of a cam 6 3j'fi xed on thefcam shaftjust forwardly offtl i'e needle actuating crank. The horizenta l shat-eras on it afiat surface- 65,

and-the cam. lever 57 has on the'i side of its hub remote from the, cam surface a boss in which are a set screw 67' and a' plunger 69 backed by a spring 70 and by a spring adjusting screw71. i The set screw, plunger and flat face on the shaft are so arranged that when theshaft 59 is turned by its-cam the flat face 65 will, through the plunger, turnthecam lever 57 yieldingly in a direction" to lock the vertical rod 53 I and when the horizontal shaft is turned in the opposite, direction the, flat face will engage the set screw 67 in the cam lever and will positively turn the lever to disengage the cam 55 from the rod and unlock it. i v

V In analternative locking mechanism for the verticalrod 53; (see Figures, 5and 6). the upper end of the rod is cylindrical and is guided in a bearing in the headj The rod above thebearing passes through a circular collar 72 in the center of which j a triangular opening 73 havingits, corners rounded and on the outer edge of which are circular recesses" 75 opposite" each straight face of the opening. The collar is may c'allv positioneda-t one side of the vertical rod between anupwardly projectinqlip 77 formed on the bearing and a cap 79 fastened on'tlie upper faceof the bearing and its opposite side is supported'by ashoulder 81 formedon avertical plunger83 guided in a bore in the bearing-parallel to thevertical rod. The reduced portion of the plunger, where the shoulder is formed, engages one of the aforementionec circular recesses. The plunger is pressed downward'by a spring 85, in the bore; in the hearinay the tension'of the siting being adiustable bv means of a screw 87 threaded in the bore. The lower end of the plunger rests on an upwardly turned end; of one arm of a cam lever 89 fulcrurned on: a

.horizontal shaft parallel to the cam shaft) The other arm of the cam lever has proiectinie' laterally from itfa stud on which is a cam roll positioned in a camtrack in a similarloca-tion tothat operating the arm 61. 'VVhen the cam lever isrocked in one direction by'itsj cam track it will raise the plunger 83 and will align the sides of the triangular opening in the collar 72 with the rod 53and will allow the rod to pass freelv through the collar, and when the cam lever is rocked in the op osite direction the spring presses.- down the plunger 83 and with. itone side of the collar and bindsthe edges of. the triangular openinp; in the; collarflagainst the rod and" locks the rod against downward movement The needle bar 31 slides in vertical bearings 91, 93 at the front of the headofthe machine and at its lower end is. puttertic'ally at 95*fo'r a short distance and has a vertical. central-herein which" the needle is clamped bya nut 99 and bolt 97', the latter passing through the needle bar at right angles tothe slit in the bar, and be ing bored transversely of its length to allow the needle to pass through it. i The needle "bar at its upper end is forged to receive end of which is pinned to a horizontal rear- Wardly extending shaft 113 having a bearin in the head of the machine. To the ot 1er end of this shaft is pinned a second arm 115 to the forked end of which is piv otally connected at 117 an'upwardlyextending link 119 formed at its upper end to embrace a cam on the cam-shaft of the machine just forward of the cam 63. The needle bar has formed on it at one side a vertical groove in which the vertical part of the cast-off is situated, and at the upper end of this groove the needle bar is cut away to form a clearance for the block in which the upper end of the cast-off is clamped.

The work feed point 123 is fastened by a set screw in the lower end of a vertical bar 125 arranged by the side and to the right of the needle bar viewing the machine from the front and having its lower end inclined towards the path of the needle which bar hastowardsthe lower end of its vertical part a vertical slot 127 which embraces a block 129 fulcrumed on a pin 131 adjustably mounted in a vertical slot 133 formed in a vertical arm 135 which is pinned to one end of a horizontal rearwardly extending shaft 137 having a bearing in the head of the machine frame and having fixed on its opposite cnd a second and horizontal arm 139 in the forked outer end of which is pivoted on a horizontal pin 141. the lower endof an upwardly extending link 143. The upper end of the link is pivoted in the forked outer end of a cam lever which is pivoted at its opposite end on a horizontal stud 147 fixed in the head of the machine. The cam lever has on a stud. projecting laterally rearwardly from it between its. pivoted and forked ends a; cam roll 14:9 positioned in a cam groove formed in the forward face of the cam 63. The verticalslots 127 and 133 in the feed-point bar and lever are so ar'-- ranged that at theend of the feeding move-' ment of the feed point the slots coincide one with the other and the'pin '131'eonnecting the bar and lever may be adjusted in the slots to vary the length: of. "feed without formed on a vertically end of the feed, the variation in length of feed taking place at the beginning of the feed.

The presser foot 151 is fastened by a clamp screw on to the lower end of a second vertical bar 153, guided in bearings 155 and 157 in the head of the machine parallel to the needle bar and to the right of the feed point bar viewing the machine from the front. The lower end of this bar is also inclined towards the path of the needle and is vertically slotted at 159 aboutmidway of its vertical length to receive a compression spring 161 which bears at its lower end against the lower end of the slot and at its upper end against a pin 163 projecting from the head of the machine into the slot. The upper end wall of the slot rests on the opposite (the upper) side of the pin when no ward movement of the presser.

The upper ends of the feed-point bar and presser bar are pivoted by horizontal pins 165, 167 in forked opposite ends of the hori: zontal arm 169 of an inverted T-shaped plate. the upwardly projecting arm 171 of which is also forked to receive a block 173 fulcrumed in the fork on a pin 175 extending across the fork. The block is straddled by the slotted end of a bell-crank lever 177 pivot-ed on a horizontal stud 17 9 fixed in the head of the machine frame. The other arm of the bell-crank lever is forked to embrace a cam 181 on the forward end of the cam shaft of the machine. A stop shoulder 183, adjustable block 184, on the front cap of the head of the machine frame. is arranged to engage a boss on the forked arm of the T-shaped plate to which is pivoted the upper end of the feed-point bar, to limit the downward movement of the feed point. A second. stop shoulder 185. formed on the block 184;, is engaged by the opposite side of the boss to prevent upward movement of the feed-point and press-er under the influence of the horn-raising spring when work is placed in the machine. When the bellcrank lever 177 is rocked on its pivot by the cam on the cam shaft. the T-shaped plate will also be rocked and will first'lower either the feed point or presser, whichever is at the time raised, on to the work, and will then raise the other of the two members using its connection with the upper end of that memher which it has just lowered as the fulcrum.

The cam shaft is extended through the can aforementioned and on its end has a hand wheel 186 whereby the cam shaft may be readily turned by the operator standin; conveniently in operating position.

On the cam shaft inst behind the needle actuating crank is a bevel pinion 137mesh with a second bevel pinion 188 on the upper end ofa vertical shaft 189. there being interposed between the second pinion altering t-hepOsitionof-the feed-point-atthe and the shaft a'customary form ofsaf'ety y in British Patent-No. 13,579 of 1895, per

device 191 suclnffor-in.stanoe,-as isdisclosed a bevel pinion193Etl1rough. wl'iich slides vertically the vertical whirl driving pinion shaft ofthe horn as the horn moves "ver tically,'the latter shaft, being appropriately keyed to'the pinion through which it slides. Just below a yoke in. which the horn is free to rotateland which carriesjhmizontal' pins one of which is shown at 195 to which links, of which one is shown at 19?, connect [a treadle 198 mounted on't-he base of the frame, by which the horn 1S raised and lowered) .is-a horizontal edge cam 199 fast to thehorn the rotation of which camin company with the-horn moves a roll 201 on one arm of-abell-cranlriof a drivingmechm nism control hereinafter detailed, the cam being iwide enough toengage the roll inall vertical positions of .the horn. v

It will be understood that the treadle l98 aforementioned is employed when work is to beintrodueediinto the machine to lower the horn-from the position of rest-in which it is held by a compression spring 203 acting onthevertical rod 3'aforementioned to hold the ,mechanisnr in a normal position i determined by a stop (notshown), the lowerend ofithe rod 3 being pivotally connected with-the rear end of the treadle 198.

At therear of the machine head where the camshaft projects therefrom the latter 7 carries the driving and stopping mechanism.

'lhecam shaft passes through and projects beyondacasing 205 fast totherear of the jmachine head I and which encloses swashplate clutch-conemctuating JUPClNlDlSl'fi as illustrated and described in said ,i'iatent to Jerram 1,124,620 aforesaid, the rear face 207 of the casingactingas the brake face against which thefront face, of the clutch cone 209 is braked. 'On the cam shaft whereit-projects from the casing is a sleeve 210 confined on which between collars at the ends of the sleeve are, as relatively rotatable memhers, (a) a coned'member 211 to cooperate withthe clutch cone, (Z1) a brake drum 213 and (c) a belt pulley 215. The collarthe more remote from the rear end of the shaft is urged to-that end of the shaft by springs not shown which-act to'displace the collar and sleeve 210 rearwardly whena manually operable cam. lever 217 on the end of the shaft (the cam of which engages the rear-- ward end of i the sleeve) is swung into the being turned by hand.

. chine toholdthe cam ment however, permitting of the machine,

on depressionofthe clutch treadle to separate the member 209 from fthehrakingrface.

Mounted directly side by side on the sleeve '210 hetweenthecollars on the ends of the 1 sleeve are two sleeves. fast to the forward one 219 of which is the coned member 211 and to the rearwardone 2210f which the belt" pulley is fast. At their adjacent'edgesithe; sleeves each have formed a-pinion, the rearward one 223 being larger. than the forward one 225, meshing with appropriate pinions of a set of pinion pairs 226 each set con stituted by a pinion meshing with each of the pinions formed on the sleeves and :both 7 fast on one shaft-227 m'ountedginbearings in the'bralre drum- 213. Thebi ake drum is" a mounted on the-sleeves 219" and .221. The

meeting edges of the sleeves "are overlapped and house between them, roller clutch mem hers 229 which when the brake [drum 'isfrelc to rotate clutch-togetherthe sleeves 219,221, a

when rotating-at the same speed,1itfbeing understood that when-the :briikedrum is'- stationary, and-through; the agency :of the pinion ipairs ithe forward sleeve is l driven faster, that sleeve" will overrun the roller clutch members. 1

Pivoted on and so as tohang from bracket on the casing 205 are two [brake shoes 230 encircling the bralr'e'drum .and. having theirilowerv ends connected by ia' togf gle 231, thetoggle joint;.of whichwis-eom .nectedto onenend of-an-jarm233l'fastgon 5a 9 horizontal roclr shaft 235 parallel with vthe cam shaft in a bearing. on the casing. This a rock shaft has fast '0I1;itaiseeondrarm 237' connected to the uppen endflof a rod 239. formed of two parts connected ibywa -t"urnf buckle 241, allowing of variatiion inf-the length of the rod.

The contacting surfacesvofthe brake .drinn 213 andashoes 230 are beveljeds'o that as thesho'es grasp the drum they wedge it to- 1 wards the rear endof=the shaft and away from i the ,end .face of the coned' member with which it hasibeen held in driving con- :tact by springs 23ycluring-the1ioint move ment ofthe drum and coned ,member. 7 11 Thelower: end of ther0d-239-is pivoted to one arm of a bell crank lever 2415 itself pivoted by a horizontal pivot 247 to? oneextrem ity of a horizontal lever 2l9pivot-ed on the column to-extend towardsthe-rearof the machine. A tension spring 251one iend of which is anchored to the levero24=9 andthe other end to the ,lever 24:5 urges *the latter V relatively to the former in ga direction to;

move a thrustrod .253v connecting the bell.

cranks 245 and 202 forwardlyiof the ma ml] 201 upto itscam 199.

second spring 255 zacts on the horizon} tallever2l9stehold itgag-ainsfi'afl estopi251611;!

which position the lever acting through the lever 245 and rod 239 holds the toggle straightened and the brake drum 213 is free.

A clutch controlling rod 259 extends vertically upward from the rear end of a clutch treadle 261' and passes loosely through an opening ina lateral car 263 on the horizontal lever 249, the rod having a little below the ear a shoulder'26et by which the controlling rod after it has risen sufficiently to throw in the clutch may be caused on further movement to raise the horizontal lever- 1 spring 269 connected-with the treadle 261 tends to lower the controlling rod to normal position. The downward movement of the rod is limited by a stop screw 267 adjustably threaded through a lug on the bell crank and arranged to engage a face on the machine.

As further indicating the nature of the machine detailed, it may be stated that certain of its parts are timed to move as follows Considering the revolution of the cam shaft, which makes a complete revolutionfor each stitch cycle, and commencing with the shaft in its normal stopping position,

. the needle falls gradually during the first 150 of the revolution of the shaft remaining substantially stationary for some to to rise again gradually to reach its upper limit after some 310 of rotation of the shaft. The horn lock comes into operation after some 100 of rotation of the shaft to "hold the horn from rising, the horn being released after the shaft has all but completed its revolution.

As the shaft commences its rotation, the feed point completes its rising movement, and its return movement away from the needle path, which commenced with the lift, is continued after the latter ceases until it itself tei'minate-s after some rotation ofthe shaft. iVhen the shaft has turned about 130 the point commences to fall and when it is down the presser foot (at about 170) commences to lift completing its rise at about 210 when shortly thereafter (at about 230) the lateral feed commences continuing to about 320 when the presser foot commences to fall once more completing its fall at about 350 just before the feed point commences to lift. The cast off commences to descend at about 50 completing its gradual descent atabout 130 remaining in its position up to about 210 when it gradually rises to its raised position which it reaches at about 310.

It is to be noted that in the construction shown the linkage used for connecting the needle actuating mechanism and the horn is such that as the needle descends into' the work there is an increasing upthrust on the horna factor important in Various Ways in producing a good seam. The converse action, however, tends to cause a descent of the horn if the needle should meet undue resistance in the upward movement and although this tendency is opposed by the spring upholding the horn it may unexpectedly lower the horn a considerable amount. This lowering is no serious objection in itself but as the horn spring will cause the horn to spring upwards as soon as the resistance to needle movement is overcome the work may he suddenly squeezed at a time when this squeezing action will interfere with the feed and it is an important result of the horn locking mechanism provided in the construction described that if the horn should be so lowered it is prevented from rising until a definite time in the cycle when its sudden rise is immaterial.

While the features above described are well adapted for use in a shoe sole sewing machine, it is to be understood that, except as defined in the claims, certain features of the invention are not limited to use in a sewing machine. The means shown and described for Varying the speed ofoperation as different parts of the shoe are being operated on forms the subject matter of a divisional application Serial No. 617,737, filed Feb. 8, 1923.

The nature and scope of the present invention having been indicated and .a machine embodying the several features of the invention in their preferred form having been specifically described, what is claimed as new is:

1. A shoe sewing machine having, in combination, a needle, mechanism for actuating the needle comprising an oscillating lever, two links pivotally connected to turn about a common axis, a pivotal connection between one of said links and said oscillating lever, connections between the other link and the needle, a presser foot, a work support, and a connection acting upon a change in the relative position of the presser foot and work support to swing said pivotal connection of said links about the axis of said pivotal connection between one of the links and the oscillating lever to vary the needle stroke.

2. A shoe sewing machine having, in combination, a needle, mechanism for actuating the needle comprising an oscillating lever, a link, two links pivoted on the first mentioned link to turn about a common axis, a pivotalconneotion between one of 1 saidtwo links and said oscillating lever,

the relative position of thepresser foot and.

connections.betweenthe other ofsaid two linksand the needle, a presser foot, a work support, and a, connection comprising the first mentioned link acting upon a change in.

Work support; to swing the pivotal connection of said two links with the first men- .tioned link about the axis of said pivotal con- .i nection; between one of the links and the oscillating lever to vary the needle stroke.

, 3. A shoe sewing maohine having, in com- .1 I hinatiomaneedle,mechanism for actuating. the;,needle comprisingan oscillating lever,,

twopivotallyconnectedlinks, a pivotal con i, .nection-:between one of said links and said oscillating, lever, 1 connections between the...

other link ,and the nee'dlmapresser foot,,a=

work support, and a connection comprising ailever fulcrumediat its forwardend on the;

ing upon: a change. inthe relative positionframe o-fzthe machine andhaving its outer end pivotally; connected with-the work support, andiailink having one end pivotally connected with said lever midway between its-ends andhavingits other end. pivot-ally conneotediwith both; of said two links act-,1

of theipresser; foot and worlesupport to .swin the- .ivotaleonnection of said two A first mentioned linksabout saidpivotal (O-1].

nection; between one of the links and the theneedle comprising a shaft provided with a'lcrank, an-oscillat ng lever fUl'CrUlTlGd'OIL links, a-.pivotal connection between one-,ofj

oscillating, level-to vary the needle stroke.

. 4,.AQS11OGSBWlng'lmflClU nQ h'av1ng,-1n com:

,bination, a needle, mechanism for actuating I an axis transverse to the axis of said-shaft,

a connecting rod havingnmiversal joint connections at its ends with the crank and} oscillating lever, two pivotally connected.

said two.';li.nks and said oscillatin g lever,

tion, offlsaidlinks aboutthe center of said p votal connection between oneiot the links andftheoscillatinglever to. vary the. needle strokeQ V 5.,A shoe sewing; machine having, in combination, 7 a needle, and mechanism lion actuatingS theneedle comprising a shaft pro- ;vided with -a .crank, an oscillating lever fulcruined on an axis transverse to theaxis of said. shaft, aconnectmg. rod lTlQVlDglllllVBl: sal )1I1t connections .at lts ends, with the tion, a,needle,:.needle aetuating mechanism,

crank and oscillatinglever; and connections between,the oscillat ng lever and. the needle, 6.1 A sewing machine having, in. .combin a t 00k the.. h,sriP-P filming; he le -in hes. s r

lO A shoe sewrng, machine; having, in

thework, and a device acting; to lock the work support fromunovement:duringa predetermined portion of a. cycle of operations of the machine; p

7. A. shoe sewing. machine having, in combination, jagstraight hook. needle, Ineedle actuating nechanism, a: presserioot, a shoe supporting horn movable toward and 1 from the resser. foot to calipertheirwork, and a deviceecting to loclethe liornirom movement during the retracting. stroke. or the needle.

8: A; shoe sewinglnachi-ne havingin eom-,

loination, a; straight hook: needle, 1 needle actuat ng. mec anism, apresser foot;..ashoe .supporting horrn, rneans' tforiyieldingly urging the horn toward the; presseufoot, and a devioe -ncting-to lock the lqrn frornimove- A se es he: r6fi 1GtiI gsstrokes1 the needle. i

- 9-. H Q i 1g I lz l1i 1Qh ng; iii combination, a -needle;, needle actuzitingohechanism, a presser foot agwork support movab e: t a d an 0 ,n- .th ipr ser foot to c per t esw r e. conn c i s LbQtWQ e 1 the work; support and 1 needleiLCtUZLtlEQQqILlBOhflnism. te yitbel mi a e en thestrokes' Q- t e..=.n ed .asgva t e ons o cur in th t ickne s o tli orle, device: acting ii in no-veinent ,thew-needle.

combination, a straight hook need le,; needle i L- t smeclm i mmW ssex-d om a sh e supporting horn, means fo yieldingly urging theushoe suppprtmg. horntoward the presser foot, connections between. the work supper-hand. needle actuating mechanism to acting; tolock the shoe n inovenientgdur ng the ing mechanism; and cam controlledi means acting. on the rod for lookingthe work support .sfrom movement. during the retracting strokeof theineedlei V 1 12. Asewing; machine having, in combinativn, dle; n e l s e t ng-mecha m,

f pper imeve t w d ndrem the in ss ito otp H p ,the work, and a device actingr to,lock the ,ai pres ser foot, a;.w0rk support-,movable,

-nfit i r endi mth'ei Pr footie pe a cpresser foot,

work support .from .In ovement d very t ewo k-pie c gn is e e o h e as variations, occur in the; {thickness {of the 0 5 d pd i isi ppp g rlli re r ting. i keiei he-n e menses connection between the shaft and friction shoe, and cam controlled means for actuating the shaft to yieldingly urge the friction shoe against the rod.

13. A shoe sole sewing machine having, in combination, a straight barbed needle, a shoe supporting horn, a presser foot a feed member, and means for actuating the presser foot and feed member rendered operative to withdraw one of these parts from the work by the engagement of the other part with the work comprising an oscillating lever, a member having a horizontal portion pivotally connected at its ends with the presser foot and feed member respectively, and having a substantially pivotal connection between the vertical portion of said member and the oscillating lever constructed to permit relative vertical movement of said member and said lever.

14. A shoe sole sewing machine having, in combination, a straight barbed needle, a shoe supporting horn, a presser foot, a feed member, means for actuating the presser foot and feed member rendered operative to withdraw one of these parts from the work by the engagement of the other part with the work, a stop for limiting the downward movement of the presser foot, and a spring having one endengaging the presser foot for urging the presser foot toward the work.

15. A shoe sole sewing machine having, in combination, a straight barbed needle, a shoe supporting horn, a presser foot, a feed member, an oscillating member connecting the presser foot and feed member for with drawing one of these parts from the work by the engagement of the other part with the work, and a spring for urging one only of these parts toward the work atall times.

. 16. A shoe sole sewing machine having, in combination, a straight barbed needle, a shoe supporting horn, a presser foot, a feed point, and means for actuating the presser foot and feed point rendered operative to withdraw one of these parts from the work by the engagement of. the other part with the work comprising a member connecting the presser foot and feed point, an actuating member, a pivotal connection between the actuating member and said member connecting the presser foot and feed point constructed-to permit relative vertical movement of said members, and means for limit ing the extent of the vertical movements of said presser foot and feed point.

17. A shoe sole sewing machine having, in combination, a shoe supporting horn, a straight hook needle, a shaft extending from front to rear of the machine and provided with a crank, and a lever and link connection between the needle and crank for acvertical portion, and a tuating the needle having the levers and links arranged with their axes tram-rersc to the axis ofthe shaft.

18. A shoe sole sewing machine having, in combination, a straight hook needle, a rotary shoe supporting horn, a shaft extending from front to rear of the machine, a lever and link connection between the needle and the shaft having the levers and links arranged with their axes transverse to the of the shaft. a variable speed driving mechanism mounted on the rear end of the shaft, and connections between the variable speed driving mechanism and the horn for varying the speed of the machine as different portions of the shoe are operated upon.

19. A shoe sole sewing machine having, in combination, a straight hook needle, a presser foot, a shoe supporting horn movable toward and from the presser foot to caliper the work, a shaft extending from front to rear of the machine, a lever and link connection between the needle and the shaft having the levers and links arranged with their axes transverse to the'aXis of the shaft, and connections between the shoe supporting horn and the connections between the needle and shaft for varying the strokes of the needle in accordance with variations occurring in the thickness of the work.

20. A sewing machine having, in combi nation, a needle, needle actuating mechanism, a presser foot, a work support movable toward and from the presser foot to caliper the work, and means for locking the work support and for raising the presser foot during the feed.

21. A sewing machine having, in combination, a needle, needle actuating mechanism, a presser foot, a work support movable toward and from the presser foot to caliper the work, means for raising and lowering the presser foot, and means acting to lock the work support before the foot is raised and to release it after the foot is lowered.

22. A sewing machine having, in com bination, a needle, needle actuating mechanism, a presser foot, a work support, means for yieldingly urging the work support toward the presser foot, means for raising and lowering the presser foot, and means acting to lock the work support before the foot is raised and to release it after the foot is lowered.

23. A sewing machine having, in combination, a needle, needle actuating mechanism, a presser foot, a shoe supporting horn, means for yieldingly urging the shoe supporting horn toward the presser foot, connections between the horn and needle actuating mechanism to vary the stroke of the needle as variations occur in the thickness of the work, means for raising and lowering the presser foot, and means acting to lock the work support before'the footis raised and bination, r eecile ag-preseer' :foot', 3 feed 15.

to'release it after the footie lowered, -member means tor-gantnalting- {the presser 24:; A sewing mach ne having, in com ioot an'd-ieed memher rendered operative to hination, L -needle, wpresser foot, a, feed 3 Withdraw one oi these parts from-the Work member, means for actuating the presser byv thehengagementof the oth'erjwith the foot and feed member rendered operative to Work, aqvork gnpport, meansfforyieldingly 20 Withdraw one of these parts from the Work urging the Work supportltoward the resser Toy the engagement of the other with the foot 2: stopior hmiting the lupward movework, a, work support, means for yieldingly merit-of the feednmember encl resser foot;

\ urging the Work support toward the resser and means actingtolock the workljsnpport foot. A r

g '25. A sewing machme having, in com-' movement of the feed member and -presser With-11118 Work,

' i of lQSEPH-GQULDBQURN; JJ ED I r foot, and a stop for limiting the'upw arol while the ieedimemher.isL in gengag'ement 25

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