US1030797A - Sewing-machine. - Google Patents

Description

G. E. WARREN. SEWING MACHINE. APPLIUATION 1911.111) MAR: is, 1903.

Patented June 25, 1912.

5 SHEETS-SHEET 1 r 15 Wain/4% G. E. WARREN. M SEWING MACHINE,

APPLICATION FILED MAR. 16, 1903.

1,03%?Q'? Patented June 25, 1912.

5 SHEETS-SHEET 2.

G. B WARREN 32mm MACHINE. APPLICATION FILED MAIL 16, 1903. 3% 9 A Patented June 25,

5 SHEBTS-SHBET 3.

G. E WARREN SEWING MACHIZIB. APPLIUATION FILED MAR. 16, 1.903

Patented June 25, i912.

5 SHEETS-SHEBT 4.

G. E. WARREN.

SEWING MAGHINEJ APPLIOATION FILED MAR 16, 1903.

1 Maggy? Patented June 25, 1912 5 SHEETSSHELBT 5k Wassw flaw/aw Boston, in the county of iiull'ollz and .cawied by the needle Slide which yo I provided lo support 'oylindri -al pin closed all one end and ex- SET'LES, ASSIGNOR TO CAMPBELL BOSVVORTH v .LJKND, MAINE A CORPORATION 03? MAINE .lpplieation filed fi ial-ch 16,

To all whom h may concern:

lie it known ihiit ll, (iiionon l). WARREN; a citizen of ihellnited Stales, residing at State of lllassachusetts, have invei'ilieifl certain new and useful linproven'ientsin Sewing-M51 chines; and I do hereby declare the following to be a full clear, and ixaet description of the invention, such as Will enable others skilled in the art to which il; appertaius to n'uilce and ihe same.

The present invention relalies to an improvei'i'ienl in sewing machines and niore i n'iriieularly lo sewing nuichinee of lhe ivux i -hread look stil'oln sixraight-hoolr-needle type, of which the commercial harness and leather machines are examples.

The object of The invent-hm is to reorganize and improve sewing machines oi the above type and parlicularlylo produce a machine capable of running at high speeds Other O lliefil? of the invenlion will he pointed out in COIll'lQCllOZ] with various fea titres of he inachii'ies hereinn'iier desri'ibed.

To the anove ends The pre 'ii invention consists in ihe. devices; and iroinl'iiiiations of derives liereina'l'ier deeerihed and claimed.

in the ai-eonnninying drawin illustrai3- ing the pre'ii'orred form of The invenlion l ijg'ure l? and Fig. l" logeihor 34 54 tionzil front elevation of the maehine: lug. 2 and Iiig. 2 together constitute a front end elevation with the cover plate and needle cam removed for lho sake of elearness; and Fig. 3 is a lop plan of the same.

The neei ile N is a simig hi hook needle having an enlarged shank. The needle is ceived in gruiileways in the front part of the frame of he mavhine, guidi plares being (he needle slide in position. The needle shank is rereived by the needle lliin'ible 3 Whieh consists of a hollow l'ernally and inierimlly screw ihreaded ai lhe other end. The needle ihimblo is received in a eireular hole through the needle slide. The porlion oi. the needle thimhle 3 which projects beyond the rear side of the needle slide is pierced i'o receive the shank of l'he needle lv'. A set screw lscrewed info ihe l'hiinblo and he end bears agrains i'he needle i ihanlz, holding the latter in place inlhe l'himble" A mil 5 is ecre'i ed on lo l'he forwardly iroieefiing end of the needle Sgieeifieation of Letters Eatcnt.

Palenijed June %5, fl. 1903. Eerie]. N0. MZMB.

(fleets rearwardly therefrom under the end 5 013 the needle shank. This pin serves as an abutmentto support the needle against the thrust thereon in passage through the maierials. The needle slide at its lower end is provided with a pin 8 which carries a cam roll which is received in the cam path 9 of the can: disk 10 which is Il'lOlHliiQflUPOll the main aiafl'. M of the machine. The earn disk 10 and the cam path 9 'l'herein are illustrated in dash and double (lot lines in Fig. 2" to avoid showing pal-lie behind it doti'ed.

'lihe above described arrangement is such that, in l'ii'ned cooperation wen ihe movenienls of the other parts oi the machine, the needle moved vertically up through the materials, Where it receives a loop of thread and then moves veriii'allv down through the materials drawing the loop of thread down Withit and delivering ii; to lheshuitle. The

m a fpei-uliar method of supporiing the needle in the. needle slide secures adequate support therefor to overcome l'he resistance offered by the ivork to its passagetherethrough by virtue of the pin the end of which is projected under the lower end of the needle shank. Art "the some time by simply loosening the nul: Without unfastening the needle in the l'hinihle 3, the needle may be iurned lo one side lo permit the removal and replacement of The bobbin in lhe shuttle. When lhe needle is turned to one side it rises out" of the groove in the rear side of the needle slide, and win-.1 it is turned back again it snaps inlo the groove under the influence of line s n-h1g6.

The. shulile S oi. the discoidal type and receives ihe bobbin holder 11 within a central aperture formed therein. The bobbin holder delivers its thread through the nose 12 which is engaged by the bobbin holder retainer l3 which is secured to the shuttle holder by means of a nut 14. The shuttle S is provided with the point 15 which, after the needle has drawn down a loop of thread, enters iihe loop and takes it out oi. lholhroal; oi the and passes through .by means of the plate 17.

carrier is pivotally mounted upon an lXlS- at right angles to the axis of the shuttle and located at substantially the lower edge of the bobbin holder. A depending arm 18 from the shuttle carrier carries upon its end a cam-roll which engages the cam path 19 of the cam disk 20 mounted upon the main shaft M of the machine. The shuttle rotated continuously in the same direction of a disk 21 mounted upon the pin 22 secured in a stationary portion of the machine. The disk 21 carries projecting pins 23 which engage recesses in the shuttle formed to receive them. The shuttle is inclined to the vertical and the lower pin 23 engages the corresponding recess in the shuttle,. while the upper pin 23 is disengaged from its recess, the pins 23 thus saccessively engage their corresponding rccesses in the shuttle and rotate it positively at all times without interfering with the passage of the loop of the needle thread around it. The disk 21 is formed integral with the pinion 24: which is driven b 1 the gear 25, which is mounted on the main shaft M of the machine and made integral with the cam-disk 20 above referred to. The pinion 24 is one-half the diameter of the gear 25 so that two revolutions are imparted to the shuttle for each reciprocation of the needle,-but owing to the fact that the shuttle carrier is oscillated back and forth on its axis once for each reciprocation of the needle the shuttle point is moved into the plane of the needle but once during two rotations, the other rotation being idle, that is to say, lying out of the plane of the needle.

\Vhile the illustrated embodimentof the invention employs a shuttle which has one active and one idle rotation it is within the purview of the invention that the shuttle should have one active and two or more idle rotations. The invention is not limited to the use of a shuttle, as a loop taker or other device may be employed for the purpose of enchaining the threads. This shutt le mechanism in and of itself is not claimed herein as it forms the subject matter of a divisional application, Serial No; 247,845 filed Feb. 28, 1905.

The prcsser'foot P is mounted upon the 1 lower end of the prcsser bar 26 mounted in the hearings QT and 28 in the front oi? the head oi the machine. normally pressed down by means oi" the arm 29, the. outer end ofwhich engages the head 30 mounted upon theupper end of the Presser bar, and the inner end of which is secured to the rock shaft 31 mounted in The prcsscr llll is r f cam disk 4'4.

the bearing 32 and carrying the arm 33 at the opposite end, said arm 33 having the spring 34 attached atone end to said arm and at'the other end to the adjusting device b means of which-the tension on the spring may be regulated so as to cause the arm 29 to tend to force the presser bar downward with the desired pressure. A stop-pin 36, adjustably secured by means of the set screw 37 in ahole alongside of the bearing 28 with its upper end in position to engage the under side of the head-3Q affords means for limiting the downward movements of the presser bar. Mounted upon the presser bar 26 below the upper bearing 28 is the clamp-sleeve 38, normally held in its lowermost position by the spring 39 which encircles said bar and bears against the lower side of said bearing 28; the clamp sleeve 38 has the clamp lever lO projected rearwardly therefrom which is adapted to be engaged by the presser bar lifting arm 41 secured to the hollow shaft 42 mounted in the bearing 43 on the rear side of the plate 44, which shaft carries upon its rear end the arm 45' having a cam roll mounted on its end which rests upon the cam surface 46 upon the upper side of the cam-disk 47 mounted on the vertical shaft V of the machine. By this means the presser bar is lifted at the proper time during the operation of the machine in timed cooperation with the feed movement of the awl and the upward motion of the needle, as is usual in. this class of machines. The presser foot is also capable of being lifted for the inscrtion and removal of the work by the arm, 48, the outer end of which engages the lower end of the pin 49 secured to the head 30 and projecting down through the bearing 50 located near the bearing 28 above referred to,rso that when the arm 48 rises it lifts the presser foot. The a rm 48 is mounted u on the front end of the rock-shaft 51 which I convenience passes through the hollow roe..-

shatt 42 above described and upon the rear end of such rock shaft 51 the arm 52 is mounted which is adapted to be connected to a treadle.

The thread finger F is mounted upon the lower end of a stud which is mounted in a hearing 5% projected downwardly from the overhanging arm, and to the upper end of the said stud is secured by means of set screw the arm to the opposite end of which is pivotally connected the link 56 which in turn is pivotally connected at its rear end to the thread finger lever 57 pi oted at upon a stationary part of the macl a cam path in theupper face of the By the e means the thread linger l is oscillated in timed cooperation with the movements of the other parts of the machine.

one and .carrvin a cam roll which on rzuu p l" dusk 2-7. The sha e of these rum paths and the ulioi'r -ZlS(!"il)C-"l oonslrrmlion are :uioh. limiihe looper :ilthe proper time during; the operation of lhe iuorhino llll'i offer The new mes hoe-n thrust up tin-(nigh lhe 21121- hrriuh is reused in partially enrirele the ueelllr (our hay i'he thread in the hurl) l irl'iridell with lhe enlarged uiounloll in the lower end of the 1 wirried. in a hearing in the :slide i'erlirul motions of the owl are seoured as follows:------llo (he rear HlLlO of the owl our is pirotully nl'laehed the link (3'7 the upper end of which is pirofully attached to the arm 68 whioh is secured upon the rock shaft (if) mounted. in hearings in the frame oi l'he machine, which rook Shu'fl: at its rear end curries the urn; 0 which proruled with u mun roll which engugjeu the (31 .1!) pul'h 71 in ihe (no.1 dial: 4?". The feed more outs of the owl ere ohla-zined in lihe l i'rlloiring manner z Upou the rear side of the slide (36 there is n'ovided a vertical groove which rereives a sliding: block 72. 'l he other end of the sliding block is; received in a groove in the arm 73 which is oeeured to the front end of the rool; shaft 7 1-. The real: shaft ezurries upon ilr rear end on arm 7.3 which is provided with a ram roll u ieh impinges a cum groove TG oy means of 'i lulions are impuried to the rook l which are l'runsui'iitred l'hrough the means clesc-rihed to lhe slide 553,; in order lo .1: lihe length of lhe 'iioed movements l'he block 72 is euifmorlerl by :rlinh' 77'wllioh in rurried rv :1 hell rruulc lever 78, the upper end o'l whim may he invung hook and .lorlh-l'o \"iry the po llion of lhe block 72 in (he Slob-a to us lo more the block 72 nearer in or foi'tlu'r from the center of the rock elm'll'll. The hell orunl; lever provided (lllll'll' lover Til which enge 'es no'liehes Willi a;

ii! :1 o soeuril in position to obtain the requisite luuazlh of feed. The above (lesrrihed er .ungijonienl and the shape oi the mine are such that lhe :iwl lo mused to move downward lo oenefrule the nxaleriulo then i'orrural to food 'lhe niuteriuh; over 'lhe position of the eedle then upwurd as tho-needle udlhen hack again lo it lirsl' position to inuhe the next leed movement. .nrzlh oi" the food movement may he The lull" il) so that said lever 78 umy he l a er ,1 ied. by lhe menus described -.-:o as to cure-e the machine lo new the des' eel length i-i stitch. i

i The lake-up, indie; led in u general Way by the reference letter T, is of the type known, a rotary hike-up and in order lo reuse it lo mulie .ils movementu in proper co operulion \ril'h lhe other s il'eh forming); in slrumenlulities it emislrueted in make two rol'utions for eurh complete more'nient of'lhe needle. 'lfhe lul euip proper consisteof pin 81 mounted in the end of u lever piw oled at 83 upon a frame 84 which is; secured to lhe pinion 85 reroluhly nuuinred upon the auxiliary shaft. The pinion R meshes with u pinion rwolubly mounl'ed upon lihe stud. 87 secured in the fram if the machin )liuoiii lu secured to it the pin 86 which meshes with the pinion Eli) niount ed upon. the upper end of the an, 'iary shall V. The pinion 89 if spline-d lo the mini]; iary shal find provided with on upwardly extended eleeve which ollorde a hearing Sui. porl for the pinion above referred lo.

The arrangement thus for described prorides for the eonslunt rol'urion of the take up pin 81 o u uniform or regular speed, two revolulio-ns for each revolution of the auxiliary ehufl; V which, being; gez'ired loy miter genre to the main shaft .lrll of the our whine, rotate; at the some speed thereon supportednear the fake-up The lever o pin 81 by means of a guide 90 so that it may rise and full in the guide and still. be held securely in 'iosiliou of the lever 82 1L shuellll which carries a "uni roll w iioh engages a orun path 93 in the 52111) disk 94. splinecl upon the upper end of the auxiliary shaft V. Thetalze-up lei I rerSQ rotates in the some direolion as but 105 at lnueelhe speed of the uni (llSK 94, there fore the hike-up lever 82 has imported to it but one rising and falling inox 'ement for ouch two revolutions.

The take-up llll'kltllunltiln lfii ineloeed by the housing 95 which is recessed or shouldered at the top to receive the port 9% which, for oonvenienrm, will he termed the take-up plate. form and consists of an outer flange 97 which is received in the recess in the up;

end of the housing 95 and a oeniral portion 98 "which projected forward from the rem purl; of lhe plate and which extends toward the marginal portion 97 being sepurated therefrom by a slot or groove 99' which exl'ends purl; way around the housing 9: and affords on opening through which, the lulleup pin 81 may be projected upward, The

slot 99 corresponds in possition with that portion of the circular pulh of motion of pin 81 at \vlnrh the lukeup acts on the l'ihreud und the central portion 98 of the luhoup plate 96 15 supported by the web which oon'iieels it will: llie outer portion 9? L30 At about the middle The hire/up phile 96 is circular inthroughout the remainder of the periphery of the plate. In order to reduce as far as possible the rising and falling movements of the take-up lever 82, the under side of the take-up plate 96 is grooved throughout the portion which is not slotted to afford a space through which the take-uppin 81 may move. N

A thread brake, indicated in a general way by the reference character 100, is provided which consists of a plate secured by a screw 101 to the take-up plate, over the opening 102 therein, the screw passing through a slot in the thread brake plate so that the thread brake may be adjusted longitudinally of the thread. By adjusting the thread brake plate back and forth by this means, he

-amount of take-up can be varied. The

thread brake proper consists of a lever 103 pivoted at 10 to the thread brake plate, which lever is provided with a clamping face close to the fulcrum 104: which is adapted to engage the thread and press it against the stud 105 fixed to the thread brake plate. A spring 106 fastened at one end to the rear end of the lever 103 and at the other end to the thread brake plate affords means normally tending to hold the clamping face of the lever 103 against the stud 105. The forward end of the brake lever 103 is provided with a thread eye 10? through whichthe thread passes.

A cover 108 is provided which restsupon a recess in the upper surface of the annular portion 97 of the take-up plate 96 and provides a shallow space between itself and the central portion 98 of the take-up plate. This cover 108 is removed in threadingthe machine and replaced when the machine is in operation. It not only serves to keep the parts clean but to keep the thread warm and to'limit the space within which it may move.

The operation of the take-up considered by itself is as follows :The thread entering at the rear of the machine passes between the clamping face of the brake lever 103 and the stud 105 then through the thread eye-107, thence over the top of the take up plate by the thread truck 10S), thence over the thread truck 110, and down through the tube 111 to the looper L. As viewed in Fig. 3, the take-up pin 81 in order to perform its take-up operation rises in the slot 99 at the point 112 and, moving from left to right through the slot 90, en-

gages the thread between the thread truck 109 and the thread eye 1.07 of the brake lever 103 and carries it out of the straight line jhining these two points, thereby causing a strain to be exerted on the brake lever .103 which canzws the clamping face thereof to engage and hold the thread against the stud 105. The continued movement of the take-up pin in the slot draws back upon the thread until the takcaip pin reaches the position indicated by the reference character 113 when further movement of the take-up pin in the slot slackens the thread. After the thread is slackened the pin 81 drops out of the loop drawn back by it and disengages itself from the thread. The take-up pin now makes a complete rotation without engagement with the thread when it rises again and the operation above described is repeated.

It is to be noted that since the thread brake 103 is located near the center of revolution of thetake-up pin, the movement of the thread between the pin and the-brake during the take-up operation is substantially radial so that there is no substantial rendering of the thread about the take up pin which is a feature of considerable value in a high speed wax thread machine.

The pull-off, indicated in a general way by the reference character O, consists of a lever 114 secured to the rock shaft 11-5 mounted in a suit-able bearing in the housing95. The rock shaft- 115 carries'upon its forward end the lever 116 which is provided at its end with a cam roll 117 which engages a cam surface 118 on the lower face of the pinion 89. Since the pinion 89 is splined to the auxiliary shaft V and makes one revolution for each revolution of the main shaft, the pull-01f is operated once for each reciprocation of the needle to pull off thread from the supply. The pull-0d lever 11% is provided with a thread eye 119 through which the thread passes on its way from the wax pot to the stitch forming mechanismf A spring 120 attached at one end to the pull-off lever 114 andat the other end to a stationary part of the machine serves to return the pull-off lever to its original position after it has performed its pull-" ing off operation. In connection with the pull-01f lover a thread brake 121 is employed which consists of a lever 122 pivo d at 123 upon a take-up plate and provided with a clamping face which cooperates with a stud 124 secured to the take-up plate 96 so that it clamps the thread between the clamping face and the stud 124. A spring 125 constantly holds' the thread brake lever 122 against the thread. The extreme rear end of the brake lever 122 is provided with a thread eye through which the thread passes. The thread after having passed through the thread eye 119 in the ull-otflever passes through the thread eye in the brake lever 122, thence between the clamping face of saidlever and the stud 124 against which it clamps the thread at each time that the pullotf lever starts to make its pull-off movement. This prevents the pull-otl" lever from acting as a take-up. I

A wax pot W is provided through which the thread passes on its Way to the machine. The arrangement of the wax pot and the front plate 138 of the machine.

lot will lever such that the three puSslng from the stripper i526? Ward in a straight line to the thread eye T of the pulhoff lever 11% and thence hack to the thread of the threacl brake lever 122, so that, the first movement of the pulhotf lever in the direction to pull off tl'l'reud from the wax pot operates to clamp the thread by means of the thread brake 121 one then to pull threat] from the Win: pot W.

Suitablemezins for heating the various parts of the nuiehine provided. The steom ipe 12*! leads to the steam jacket 'Wlllfllfl mounted upon the re 1 t the take up plate 9t, From this jooliet 128 the steam tlufough the pipe i729 to the steam jacket 1250. for the We pol, thence through the pipe 151 to the steam chamber in th overhanging arm for heating the threlil on its way to the stitch forming instrumeirtelitaies and for heating the looper aunt thread finger. 'lhenee it pt through the pipe 132 to the steam jaei .133 which by conduction and radiation heats the simitle and thence it is (lischa The main shaft M of the machine is journalecl in suitable bearings 135 and 136 in the base of the machine, and. the forward eutl of the main shaft provided with an auxiliary hearing l3? which is carried by the hipon the rear end 01 the main shaft M is secured the usual grooved pulley wheel. 13S from which the machine may in driven from any convenien source oi power.

The .tuxilizu'y shaft V is mounted in vet-- tioal hearings 140 in the hose and in the m erhzmging arm of the niuohine' and is geared to the main shaft M by 'initer go; rs 143 and 144 so that the main shaft M and the auxiliary vertical shett'lrotate at the same speed.

The base of the machine 14-" 12:

ii. hox-ehopetl structure which is provided upon its upper rem" encl 'iitli a surface 14-6 to which t 1e hose i l? oi the overhai 'mg gu'm 148 is bolted.

The bohhin holder 11 is removed from the shuttle by removing the never plate 149 pi'v oted upon "the upper edge of the front plate 138 and the throat. plate 150 turning; tee machine so that theshuttle is in its rem p sition. The nut 5 by which the needle secured in position is loosened anti the hee l is thrown to one side out of its slot in the rear side of the needle slide, the emu rliSl' 10 being provided with holes-through which the nuts 5 and 1% may be reached. Then the nut H: of the hoohiu holder retain 2. 13

inc of the {tram a H mulling the parts to he in too positionuho" in the (lrziwinge. with the shuttle heel: just entering the loop oi thread drawn (town by the needle the needle at the bottom of its looptlrnu'ingr stroke, the :iwl zit the top of its stroke. anti the tnkeuip (lomqtlmt is to soy, ruining idle, the shuttle hook firstenters the 1001i anti the ehuttle passes therethrougl'i. the pull-oil" givir b up lhrencl to the shuttle, and just before the shuttle completes its movement through the loop the take-up liftctl into position re uly went-gage the thread he tween the llll a iii-nice 1.00 and the thread cruel: 109, ttiiil after the shuttle has passed thread out! the threact broke 10? anti punt: ,K k p .l (i which has been around the shuttle and meut of the owl and the neecle. ward movement ot the owl does not begin until after ti toot has rlropperl upon the m' 1' although the upward movemem: o i. the needle has begun previous to this time because the needle has to rise some (lisianco ore it reaches the materiels. Zlhe owl anti motile proceed upward togetlielu owl raiitreziting sligl'iiily in M]- mime The looper, having moved o'vv'ev In its 'i'kOSiflOll over the needle, now moves toward and around the .ueeciie enrol l t ops the thread in the herb thereof. 'With he completion of the no word u'utweuie of the needle the looping movement is completed and. the needle hegine its retracting movement, the owl d111- ing this time ling hack to its original position. The e in) now deseei'icls and the thremliingen which during the "feeding mm term e hight ill, the three-(l between the looper and the work, now gives up thread Before the ueeclle to the retracting needle. has completed its downward movement: the shuttle liegz i to termini toward the path of motion of the needle and at the time the iflouuvril movement of the needle is complete l the shuttle hoot; enters the loop of thread pulled down by the neetlle and the operations; above ileserihe are reltfl'lt oi? the :uvl lmcl engaged and peated. The pull-off, movement of the pullofi' begins shortly after the beginning of the operative movement of the take-up and is completed slightly before the completion of such movement, ancljthe pull-oil then stands still, holding the thtead taut until after the needle has begun its downward movement, when it begins to retract to slacken the thread. By causing the shuttle to make two or more revolutions for each reciprocation of the needle, the time required for the shuttle to pass through the loop of thread pulled down by the needle is reduced in amount, and by causing the take-up to operate in the manner described the proportionate part of the complete cycle of movement which is occupied by the take-up,'operation is much decreased without interfering with the opera tions of the other parts of the machine; Itis desirable in this class of machines that the taking up of thread should begin rapidly and should be completed slowly, and by the means described the take-up pin 81 when it first engages the thread draws back upon I the same rapidly, but as the pin approaches the position 113 the amount of thread drawn by the take-up in proportion to the distance through which the take-up moves is gradually diminished, whereby the thread is pulled into the materials and against the stress incident thereto with a gradually decreasin speed until at last the take-up operation is completed when, although the speed of motion of the take-up is undiminished, it draws no more thread, and during an ap preciable length of time the thread is held in the'position to which it has been drawn by the take-up and it is given time to set in the position which it has assumed in the materials before the take-up again slackens its stress upon the thread. Then the takeup, after slackening the thread, drops out of the bight formed thereby and permits the looper and thread finger to form a bight in the thread preparatory to looping the needle when it again rises through the materials.

It is to be noted that since the shuttle is a rotary shuttle as distinguishedfrom an oscillating or reciprocating shuttle, it is not required to change its direction of motion during each complete cycle of operations of the machine but persistently rotates in the same direction and at a constant speed.

l urthermore it is to be noted that'the takeup, as distinguished from oscillating or reciprocating take-ups, moves always in the same direction and at the same speed and that it is caused to engage the thread only at such time during the operation of the machine as it s desired that the thread should be taken back from the shuttle around which it has been passed. It is a matter of considerable importance in the production of high speed sewing machmes that parts which have the greatest movement should not be reciprocatory or oscillatory, and it is believed that the present invent-ion is the first machine having a shuttle and take-up which rotate a plurality of times for each cycle of operations of the parts of the machine.

lhe present invention is not limited to the specific embodiment thereof illustrated in the drawings but may be embodied in other forms. I

The features of the present invention are not limited t-oembodiment in straight needle sewing machines as they are susceptible of embodiment in sewing machines employing a curved hook needle, but it is believed that they are the more valuable in straight needle machines for reasons apparent to those skilled in this art.

Having thus described the invention what is claimed is:

1. 'A sewing machine, having, in combination, a reciprocating hook-needle and means for actuating it, a rotary shuttle on the same side. of the work as the needle, a rotary takeup and means for actuating the shuttle and take-up to make a plurality of rotations in the same direction to each reciprocation of the needle, and to engage the thread once during each reciprocation of the needle, sub stantially as described. 1

2. A sewing machine, having, in combination, a reciprocating hook-needle ;1 n d means for actuating it, a rotary shuttle on the same side of the work astlie needle, a rotary takeup, and means for imparting a regular or uniform rotary motion to said shuttle ahd take-up to cause the shuttle and take-up to make a plurality of rotations in the same direction to each reciprocationv of the needle and to engage the thread once during each reciprocation of the needle, substantially as described. 7

3. A sewing machine, having, in combina- .tion, a needle, a shuttle, a rotary take-up,

and means for causing the take-up to engage the thread to pull upon the same to take up the thread of the loop through which the shuttle has passed, then to slacken up upon the thread and then to disengage itself therefrom, substantially as described.

i. A sewing machine, having in combination, a needle, a shuttle, a rotary takeup, a take-u p plate across which the needle thread runs from the supply to the needle, said take-up platebeing provided with a slot, a take-up pin, means for moving the take-up pin through the slot and for raising it up and down in the slot so that itshall engage the thread when raised and take up thread, substantially as described.

5. A sewing machine, having, in combination. a needle, a shuttle, a take-up plate over which the thread leads to the needle, said plate being provided with a segmental circular slot, a take-up pin, means for rotating the pin under the slot, and means for projecting the pin up through the slot to en- I operation and located approximately at the ccnter'o't motion of said device so. that the threaddoes not render around said devicev duringthe take-up operation, substantially as describe v 7. A. sewing machine, having, 111 combination, a needle, aushuttle, a take-up having'a revolving thread engaging device, and two fixed thread guides located respectively outside of, and substantially at the center of, the path of motion of said device, substantially as described. I

8. A sewing machine, having, in combinatioma straight hook-needle, a shuttle located onthe same. side of the work as the needle, a take-up rotating twice for each reciprocation of the needle and located on the oppo site side of the work from the needle 'in proximity to the lead of the thread, a thread brake on the remote side of the take-up, a pull-oil, a threadbrake on the proximate side of the pull-oil", and means for actuating the parts to cause the pull-oil to pull off the thread from the supply and deliver it to the needle and shuttle, the talze-up acting during alternate rotations to engage the thread and take up the loop of thread through which the shuttle has passed, substantially as described.

I .9. A look stitch leather sewing machine,

having, in combination, a horizontal base and an overhanging ar1n,a main shaft in the base, a needle supported by a needle slide in guides in the base, a cam on the.

main shaft for actuating the needle to impart thereto one reciprocation for each rotation of the main shaft, a shuttle located in the base in proximity to the needle, a shuttle carrier, means for rotating the shuttle twice for each reciprocation of the needle, means for moving the shuttle toward and from the needle once for each reciprocation of the needle, an auxiliary vertical shaft in the overhanging arm driven from and at the same speed as the main shaft, a rotary takeup pivotally mounted on a frame on the auxiliary shaft, gearing for rotating the taken}; twice for each rotation of the main shaft, and acam on the inain shaft for raisand lowering the take-up into position to engage the thread once for each rotationof the main shaft, substantially as described. 10. A sewing machme haVmg, in combination, a base, a horizontal main shaft mounted in bearings in the base, a vertical auxiliary shaft mounted in hearings in the base, an overhanging ar1n,,a IQClPlOCiLlllllD' hook-needlelocated inthe base and actuated fromthe main shaft, a rotary shuttle lo cated in the base and actuated from the main shaft, arotary take-up loosely 1nounted upon the upper end of the auxiliary shaft,

'a' pull-oil", a thread finger, alooper, an-awl,

a plurality of times for each rotation of said main shaft, means for supporting the shuttie and moving; it toward and from the needie once during each rotation of the nain shaft, a vertical auxiliary shaft driven from and at the same speed as theniain shaft and supported in hearings in the overhanging arm, a rotary take-up, an awl, a presser foot, a looper, and a thread linger supported from the overhanging arm, and a cam disk on the auxiliary shaft provided with cam paths or Presser foot, honor and thread finger, the take-up being mounted upon the auxiliary shaft but not secured thereto and being actuated so that it shall engage the thread once for each reciprocation oi the needle, substantially as described.

12. A sewing machine, having, in combination,"a hook-needle, a rotating shuttle, arctating take-up, said shuttle and take-up being arranged to act on the thread once during" each reciprocation of the needle, a looper, means for actuating the needle and looper and means for imparting a plurality of rotatiol'ls to the shuttle and: take-up for cation of the needle, substantially as described.

In testimony whereof I ailix my signature, in presence'of two witnesses.

- GEORGE E. lVARREN.

Vl itnesses Holman VAN Evnnnn, Farm on F. Dousur.

surfaces for actuating the take-up, aw],

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