US1625232A - Bobbin-winding machine - Google Patents

Description

1,625 232 Aprll 19,1927. L. E. TOPHAM f BoBIN WINDING MACHINE Original Filed April so, 191s -4 sheets-sheet -1 ,62 /Ja l a4 f 1,625,232 Apnl, 19.1927' E. TOPHAM BOBBIN WINDING MACHINE Original Filed April 50, 1918 4 Sheets-Sheet 2 Y ZM A il 1927.

Pr 19 L. E. TOPI-IAM BOBBIN WINDING MACHINE Orlglnal Filed April 30, 1918 4 Sheets-Sheet 3 Z-T'D Ver-Dt) D1' April# 19, 1927.

' L. E. TOPHAM BOBBTN WINDING MACHINE 4 Slxeets-Sheet 4 Original Filed April 30, 1918 m fr? WET- 7555 Patente-d Apr. 19, 1927.

NETE@ STATES PATE LAURENCE E. TOPI-LAM, 0E SVVAMSCOTT, MASSACHUSETTS, ASSGNOR TO 'NTTED SHOE MACHINERY CORPORATION, OF PATERSON, NEW' JERSEY, A CORPORATION 0F NEW JERSEY.

BOBBIN-WINDING- MACHINE.

Application filed April 30, 1918, Serial No. 231,611. Renewed November 20, 1925.

This invention relates to winding machines, and more particularly to winding machines for winding sewing machine bobbins.

rthe primary object of the invention is to produce a bobbin winding machine upon which filled bobbins having a portion of the thread wound on the bobbin in one direction and the remainder of the thread wound on the bobbin in the reverse direction may be produced in a rapid, efficient and reliable manner.

lilith this object in view, the machine is provided with driving connections for driving the winding shaft in reverse directions, and a feature of the invention contemplates the provision of automatically acting means `for actuating and controlling the driving connections to drive the winding shaft in one direction during tne winding of the first part of the bobbin and to drive the winding shaft in the reverse direction during the winding of the remainder of the bobbin.

In the preferred form of the invention, the direction of rotation of the winding shaft is reversed when the winding sha-ft has er-ccuted a predetermined and definite number of rotationsv at the beginning of the winding operation, or when a predetermined length of thread has been wound on the bobbin. 1n the present embodiment of the invention the shifting of the driving connecti ons to reverse the direction of rotation of the winding shaft is controlled by a mechanism which is driven in definite relation to the winding shaft during the rotation of the winding shaft in the first direction at the. beginning of the winding operation. T his mechanism registers the rotation of the windingshaft in the first direction and times the action of the mechanism for shifting the driving connections or determines the point in the rotation of the shaft at which the direction of rotation of the shaft is reversed. `When the winding shaft has described a predetermined number of rotations in the first direction, or when a predetermined number of coils or turns of thread have been wound on the bobbin, this mechanism causes the automatic shifting'of the driving connections to reverse the direction of rotation of the winding shaft.

Other objects of the invention are to improve the construction and mode of operation of bobbin winding machines.l and with this object in view the invention comprises certain other novel and improved features hereinafter described and particularly pointed out in the claims.

The features of the invention will be readily understood from the accompanying drawings illustrating the invention in its preferred form, and the following detailed description of the constructions therein shown.

In the drawings, Figure 1 is a plan view of a bobbin winding machine embodying the invention; Fig. 2 is a view in front elevation, partly in section, of the machine; Fig. 3 is a view, partly in plan and partly in horizontal section, of a portion of the machine, illustrating` certain of the parts in different positions from the positions in which they are shown in Fig. 1; et is a plan view, partly in section, of the machine, illustrating certain of the parts in still different positions from the positions in which they are shown in Figs. 1 and 3; Fig. 5 is a view, in side elevation, partly in section, of the machine; Fig. 6 is a detail sectional View, I

taken substantially on the line 6 6 of F ig. Fig. 7 is a detail view in side elevation illustrating particularly certain parts of the mechanism for clamping a bobbin on the bobbin winding shaft; Fig. 8 is a perspective view illustrating certain parts of the mechanism for'clamping a bobbin on the bobbin winding shaft; Fig. 9 is a view similar to F 8, illustrating the parts in different relative positions; Fig. 10 is a view similar to Figs. 8 and 9, illustrating the parts in still different relative positions: Fig. 11 is a transverse sectional view and Fig. 12 is a view in side elevation, showing a partially wound bobbin at an early stage in the winding operation; Fig. 13 is a transverse sectional view and Fig. 14 is a view in side elevation, showing a partially wound bobbin at a later stage in the winding' operation; Fig. 15 is a transverse sectional view with a portion of the thread broken away; and Fig. 16 is a view in side elevation of a completely wound bobbin.

The machine illustrated in the drawings comprises a rotatable and longitudinally movable bobbin-carrying winding shaft 2 mounted in suitable bearings and having a reduced left-hand end port-ion indicated at 4.- upon which `a bobbin may be secured as shown in Figs. 1, 2 and 4, the bobbin being indicated at ll in the-:e liguree. lfhe elia'lt is mounted to slide longitudinally in a bearing in a Sleeve (l 'journaled in a bearing in the upright S on the Ytrame and mounted to rotate and slide longitudinally in a bearine; in a bushingl llt) clamped in the upright 12 on the frame. rlhe sleeve t' is Secured to rotate with the windin shaft by means ot a` key ll mounted on the shalt and engaging in a longitudinal groove in the sleeve. Journaled eide by eide upon the winding' shaft between the bearing-e tor the shaft are two drivingl pulleys lt and i8, which are driven in opposite directions as indicated b v the arrowe` in Figi'. l b v means ot drivingl belts 2O and 22. Clutch deviccsi` are provided tor connectingv the pulley lll and the pulley 18 alternatively with the winding shaft. These clutch devices comprise a disk Bfl secured to the windingehatt, and a clutch pin secured in the disk with its endev projecting laterally trom the disk, a clutch pin 28 mounted in the driving' pulley lll and arranged to engage the lett-hand end oit the clutch pin 2G. and a clutch pin 30 mounted in the driving?T pulle)T 18 and arranged to engage the right-hand end of the clutch pin 2G.

lli'hen the machine iS idley the winding?r xhat't in held in the long-itiulinal ponition Shown in Fig. 2 with the clutch pin 2li located in central position between the clutch pinel and ill) no that its respective ende clear said clutch pins, the driving pulleys lli and 1S then rotating` idlyv o-n the shatt. l`o connect the winding' ahatt with the dri ving" pulley 1li, the shaft is shifted longitlulinally to the lett to cariwv the lett-hand end ot the clutch pin into the path ot' the clutch pin :28, an lShown in Fit". 3, and in a corresponding manner to connect the windinil Sha'lt with the driving pelle)v ttl the Shaft ehi'l'ted longitudinally to the right to carry the right-lourd end ol the clutch pin 2li into the path ot the clutch pin Btl, as shown in Fig; -,l-. Upon starting the machine the winding4 nhatt ia shitted to the lett to clutch the saine to the driving' pullev lll. The Shaft is driven by thc driving; pulley 1G in the direction indicated bv the arrow in Fie'. 2l until a predetermined number oi turns or coila of thread have been wound on the bobbin and the tshatt ia then automatically :shifted to the right to unclutch the shalt trom the drivingl pulley1 'lt and to clutch the Same to the driving pellet7 1S. The shajtt. in then driven bv the drivingpalle)v iS in the opposite direction or in the direction indicated by the arrow in Fig. el until the winding oit a bohbin in completed. Upon the completion ol" the. winding;r of a hobbin the shat't is shifted to the left to ite idle position to unelutch the Shaft from the driving pulley t8 and cauto the Shaft to come to reet.

The longitudinal position of the winding what't ia controlled by a hell crank shittingY lever 3:5 pivoted at lll on the 'trame and having,V a tork formed at the end ot its vertically eli;tending` arni, the members` o-l" which embrace a sleeve lo secured on the windingil shaft by a nut 3S threaded on the end o li the allait. aaid members engaging between ilario-ea` ttl l-ormed on the aleeve. To the end et' the horizontally extending` arm ot the bell crank shittingv lever S52 iivotall)7 connected the upper end ot' a rod l2 mounted in a sleeve lila It coiled epi-iin;- lt Surrounds the. rod within the sleeve, and is interposed between collarel -ttl and o() mounted on thc rod. The collar #itl is arranged to engage an abutment o2 lin'mcd on the rod l2 and the inunrdl)1 projectiing; end wall ot the Sleeve7 while the collar all in arranged to engage a collar ."i-lY mounted on the lower end oft the rod and an abutment Btl termed on the inw terior ot the sleeve. lilith this conntrnction relative longitudinal movement of the :sleeve and rod in either direction will compress@` the coiled Spring lo. rlhe lower end ot the Sleeve in connected to the upper end ol a treadle rod 5S, the lower end oit' which is piv` otally connected with a tread le shown conventionally in Fig. 5, and indicated by reterence numeral llt). The treadle (it) is pivot ed at (l2 and i= cted upon by a coiled Spring; (il, the strength ot which is considei-ablyY greater than that o'l the coiled spring` itl no that the tormer spring will litt the treadle and treadle rod against the action oit the latter spring. The upward movement ot the treadle and treadle rod is limited by ai stop pin (itl arranged to engage the treadle. lVith thinl construction the elevation ot the treadle rod upon the release of the treadlo tends throingh the spring -lt to swing the bell crank ehil'tin.;Y lever 32 in a direction to ehi'll; the winding Shaft to the lett to clutch the pulleyY lli to the aha'l't. and the depreaaion ol the treadle rod tenda4 through Said eprint; to swine; the aliittingg,l lever 3Q in a direction to shitty the winding: ahat't to the right to clutch the pulley 18 to the shalt.

'lhe moven'ient ol the shifting' lever 32 is controlled hv a latch lever (S pivoted on a` stud T0 and haring' a laterally extendiiuil arin upon which ia toi-ined a` projection T2 arranged to engage a projection Til; lornied on a plate :Lecured to one ot the memliers ot the forli on the vertically extending arm ol the shitting' lever. The latchY lever is acted upon by a coiled eprintr 72 which tends to Swing the lever in a direction to cariv the laterallyv erftein'liinf arm thereof 'torwaitllv The latch lever in also formed with a forwardly extending; arm terminating in a handle 76.

The parte are `no cm'iatructed and arranejc-d, that with the projection T2 on the atch lever located at the lett ot projection Tl on the shitting' lever and in contact therewith, as shown in Fig. l,the longitudiincassa nal position of the Windinof shaft as determined by the shifting lever is such that the shaft is unclutclied from both driving pulleys, and with the projection 72 located a the right of the projection 74 and in contact tl'iereivith, as shown in Fig. 3, the longitudinal position of the Winding shaft such that the shaft is clutched to the pulley 16. Figs. 1 and 2 show the positions of the parts when the machine is idle, the projection 72 on the latch lever being` located to the left of the projection 74 on the shiftino` lever and the treadle being released. lhe. shifting,` lever is held in position with the projection 74 in contact with 'the projection so that the shaft is unclutched from both pulleys by the. action of the tref-,die spring, ($4 and the intermediate spring` 48, The sleeve 44 is held in elevated position by the treadle spring, thereby placing the spring 4G under considerable compression (see Fig. 2).

lVith the parts in the positions shoivn in Figs. 1 and 2, after a bobbin has been secured in place on the end of the Winding shaft, the operator starts the machine by grasping the handle of the latch lever and swinging the same to the right. The swinging movement of the latch lever thus produced disengages the projection 72 on the latch lever from the projection 74 on the shifting lever, allowing` the latter lever to be actuated by the coiled spring 46 to shift the Winding shaft longitudinally to the left to clutch the shaft to the pulley 16. Upon the release of the operating handle on the latch lever, said lever is swung back to its original position by the action of the coiled spring 76, thereby locating the projection 72 on the lever to the right of the proj ection 74 on the shifting' lever, as shown in Fig'. 3. After this occurs the operator depresses the treadle. During the depression of the treadle the shifting` lever is held from swinging movement by the engagement of the projection 72 With the projection 74, and the coiled spring V46 is coinpressed by the downward movement of the sleeve 44. rlhe treadle is held doivn by the operator until the winding` of a bobhiu is completed. Vlien a predetermined number of coils or turns have been Wound on the bobbin, the latch lever is automaticilly actuated to disengage the projection 72 from the projection 74. The coiled spring` 46 thenactuates the shifting;- lever to shift the Winding shaft longitudinally to the right to unclutch the shaft from the drivinfr pulley 16 and to clutch the same to the driving pulley 18. The rotation of the Winding shaft is thusl automatically re.- versed and the thread is thereafter wound upon the bobbin in the reverse direction. The Winding shaft is held in position longitudinally with the driving pulley 18 clutched thereto by the depression of the treadle until the operator releases the treadle upon the completion of the Winding,r of the bobbin. After the Winding shaft is shifted to the right the latch lever is again sivn .0' back to its original position by the Ll spring 76, thereby locating the pro- V, ..on 72 in position at the left of the projection 74. Gbviously, in shifting` the winding` shaft to the right far enough to clutch the shaft to the driving` pulley 18,the shift ing' lever is actuated to carry the projection 74 to the right somewhat beyond the projection 72, as shown in Fig. 4. Upon of the treadle rod under the action of the ireadle spring (S4 at. the completion of the winding of a bobbin, the shifting lever is actuated during the first part of the upward movement of the treadle to shift the i* Winding shaft to thev left to unclutch the shaft from the driving pulley 18, the movement of the shifting lever beingstopped by the engagement of the projection 74 With the projection 72. During the further upu'ard movement of the treadle rod the sleeve 44 moves upwardly independently of the rod, thereby compressing` the coiled spring 46, as shown in Fig. 2. The parts are thus restored to their original idle positions.

The mechanism for automatically actuating the latch lev-er to disengage the projection 72 from the projection 74 and thereby cause the shifting of the winding shaft to reverse the direction of rotation thereof after a predetermined number of turns have been Wound on the hobbin comprises a longitudinally movable and rotatable Shaft 7 8 mounted at one end in a bearing supported in the upright 8 and at the other end in a bearing supported in an arm 8O on thenpright. The shaft 78 is driven from the Winding shaft 2 through a gear 82 secured to one end of the sleeve G and a gear 84 secured to a sleeve 86 journaled in a bearing in the upright 8, the sleev-e 86 forming a bearing` for the left-hand end of the shaft 78. During the rotation of the Winding` shaft, the gear 84 is driven through the sleeve G and gear 82 from the Winding shaft in a, direction dcpending on the direction of rotation of the Winding shaft and at a speed depending on the ratio lof the sizes of the gears. These gears are preferably proportioned so that the speed of rotation of the gea-r 84 is considerably less than that of the Winding shaft. The shaft 78 is driven from the gear 84 in a definite relation to the Winding shaft during` the rotation of the Winding shaft in the direction of the arrow, 4ig. 3, or during the Winding of the predetermined length of thread on the bobbin lthrough a suitable clutch Which is inactive during the rotation of the winding shaft in the direction of the the release ofthe treadle and the elevation i Gil arrow, Fig. fl, or during);l the whirling` ol the remainder ol the bobbin. The rotation ot the Winding; shalt in the direction oit the arrow, lii il, drives the gear 8l `in the direction ol' the arrows. Fins. 5 and t3, While the rotation ol the niniling;l shalt in the direction ot the arrow. lille'. el. obviouel'jv will drive lthe gear ttl in a direction reverse to that olf the arrows, Figs. 5 and t. The shalt To is driven `troni the gear SM1 through a doe; clutch ctnnprising a clutch dog 8S pivoted at ttt) on the near and a sleeve 92 inounted on the, shalt, To to rotate with the sha'lit. and llanuraa notch in its peripherjv which torina an abutment' ttl arranged to be engaged by; the projection 9o on the clntcl Vj. The clutch den' is acted upon by a coiled spring;- :ttr whiclrtends to maintain the projection titl on the clutch dog;l in the notch in the sleeve but allows the clutch dog to swingl inrtvvardly to disengag'c the projection Atroni the notch. '.llhe sleeve Stil is connected with the shatt To by ineans ot a pin lll() mounted in the shaft with its outer end engaging` in a longitinlinal groove in the sleeve. which connectsI the sleeve tor rotation with the sha'tt and allows the shaft to inove longitudirnillj' through the sleeve. The projection 9G in the clutch donf and the abutnient 9-l1 in the sleeve are so constructed and arranged that dur-nig the rotation ot the `rear St in the direction olf the arrows, Figs. 5 and (l. the gear is clutched to the sleeve hv the clutch dei; and drives the sleeve and shait 78, while `lurinn' the rotation ot' the gear in the revente direction the clutch dop; is inactive, allowinn the `rear to rotate independently oit the aleeif'e. 'lhe arrow on Fig. 3 indicates the direction ot rotation ot the shalt TS when the sha lt ia driven troni the gear S4; through the clutch den' Sti. 'llhe sleeve is acted upon by a coiled spring; 102 interposed between the outer end ot they vsleeve and the hub ot a` disli lttl, secured to the sha'lit, which n1ain tain@` the inner end ot the sleeve in 'lirictional engagement with the gear St to cause the .oracle drive 'the sleeve and the sha'tt Ztl during' the rotation ot the gear in a direction reverse to the arrows, Fig t3 and o. its shown clearljv in liig. 3, the nhtdiand end ot' the shalt 'itl torined with a series ol aeree.' threads indicated at ltltt and in threaded into a nut il'ornied in a sleeve 1.03 secnrei'l lj a clainp in the outer end ot the arni 8o. 'through the engz eurent ol the end ot the shalt Trl Vin the sleeve 10S, longitudinal inovenient will be iinjlnirted to the, sliailit by the rotation ot the shalt. 'lhe threads upon the shaft. and sleeve are whatL are ordinarily linonn as lettdiand threads, :fo that as the altari is driven in the direction ot the arrow, Fig. 213, bj' the rotation ot the gear Sl, the sha'lt Will he inoved longitudinally to the left.

The shalt T8 by ite longitudinal inoveinent waaraan to the lett thus registera the rotations et the winding;l slia'l't during' the tiret part oit the winding operation. The point in the Winding' operation at which the latch lever is aetnate'l to disengag'e the projection i2 troni the projection Tel to cause the shitting;` ot the windingu shaflt to reverse the direction ot' rotation olI the shalt is timed by the longitudinal movement olE the shaft 78 so that the direction of rotation ot' the winding stia tt ia reversed alter the n'iiidingl sha'l't han executed a predetermined nuniber ot rotations at the beginning olf the winding` operation. 'ifo this end the dislc lttelcar ies an inclined projection llt) which at a certain point in the longitudinal niovenurnt ot the sha'tt TS is adapted to engage a contact sind 11:2 n'iounted on a rearwardly e.\'teiulinv arni on the latch lever. lllv the engagement o'l" the projection 11() with the conta 't stud Vl lil the latch lever is swung' in a direction to disenjajaire the projection 'T2 on the lever 'troni the projection trlV on the, shitting lever 82. rThe longitudinal position ol the shalt 78 at the start ot' the winding o1 a bobbln is determined by an abutment screw 11.1 threaded into the outer end of the sleeve .10S and arranged to engage the en'd of the shaft 78, as shovvn in Figi'. 3. Figs. 1 and t illustrate clearly the position ot the shalt 7S at the start ot the winding ot a bobbin, Fig. 1 shoninl` the positions oli the parts before the, latch lever has been actuated to start the niachine. and lliir. -t showing the positions ol the parte` just alter the Winding' sha'lit has been shifted to clutch the sliatt to the driving' pulley 1li. lt will be noted that. at` the start ol the iindingoperation ot tl e projection .110 on the disk 1011- is located Foule distance troni the contact stud 112 on the latch lever. lfpon stai-ting;n the niachinc. as the windingY sl att, is clutched to the drivinnpulley 16 and is driven in the direction indiated by the arrow in Figi'. il, by said pulley, throngih the driving' connections between the winding` shaft and the shalt 78 the latter shalt i s driven at relativeljv slow speed in the direction o'l'l the arron' in saidt ligure. lhe rotary movement ot' the sha'tt Til in this dircction cruises the sha'tt to niove lonlig'itlnltnalljr to the lett. Alter the winding shalt has d eseribed a predetermined nuinber ot rotations7 or alter a predetermined number ot turns oft thread have been wound on the bobbin. the jiirojection 110 on the disk 10ft enfljagres the contact stud 112 and actuatcs the latch lever to disengage the projection T2 on. the lever from the projection 74; on the shifting' lever 3Q. then this occurs. as above elated. the shitting" lever is actuated by the action of the coiled spring #i6 to shift the Winding' shalt longitudinally to clutch the shaft to the drivingr pulley 18. As the gear t-l upon the reversal inthe direction ol rotin tion of the winding shaft is rotated in' a till ita)

lite

lill) direction reverse to the arrows, Figs. 5 and 6, the sleeve 92 is rotated in the same direction through the frictional engagement of the inner end of the sleeve with the gear, the coiled spring 102 then being under comparatively heavy compresioinas shown in Fig. 4, so that the inner end of the sleeve is held with considerable pressure against the gear. By the rotary movement thus imparted to the sleeve 92 the shaft T3 is rotated in the direction of the arrow, Fig. fl, and is moved longitudinally to the right to its original position. The number of rotations executed by the winding shaft before the latch lever is actuated by the engagement of the projection 110 with the contact stu'd 112 to cause the reversal in the direction of rotation of the winding shaft, or the time in the rotation of the shaft during the first part of the. winding operation at which the direction of rotation of the shaft is reversed depends upon the position of the dislr 1011 at the start o-f the winding operation, which is determined by the initial longitudinal position of the shaft TS. The initial longitudinal position of the shaft may be adjusted to regulate, as desired, the number of rotations executed by the winding shaft before its direction of rotation is reversed by an adjustment of the abutment screw 115. Should the operator fail to have depressed the treadle when the latch lever is actuated to disengage the project-ion 72 from its position at the right of the projection 711 by the engagen. c t of the projection 110 with the stud 112, the shifting lever 32 is then actuated by the movement of the latch lever to shift the winding shaft to the right into its idle position, as shown in Fig. 2. -To this end an abutment screw 113 is mounted on the forwardly extending arm of the latch lever, and one of the members of the forli on the shifting lever is formed with a lateral extension, indicated at 114-A in the drawings, adapted to g the abutment screw 113. he winding shaft may then be shifted. to the right from its idle position to clutch the saine to the pulley 1S by the depression of the treadle.

Vl machine is provided with .improved 1.11 devices for clamping a bobbin upon the bobliin winding shaft which will ena-ble the bobbin quickly and easily t0 be clan'iped `upon the winding :shaft upon starting the machine, and to be unclamped from the winding shaft when the winding of the bobbin has been completed. rllhe clamping devices for the bobbin -comprise a flange 116 formed on the winding shaft and arranged 'to engage one side of the bobbin, and a chiniping ineniiber 118 arranged to engage the other side of the bobbin. The clamping member 118 is mounted upon the inner end of a rod 120 having a cylindrical enlargement or head 122 engaging in a cylindrical recess in the clamping member. The rod sha-ft..

120 is mounted for longitudinal and rotary movement in a sleeve 1.24 and is formed at its outer end with a series of right-hand screw threads engaging corresponding screw threads formed in the sleeve. The sleeve 121- is mounted for longitudinal and rotary movement in an arm 126 pivoted at 128 on the frame, and carries a milled hand wheel 130. As shown clearly in Figs. 3, 8, 9 and 1G, the end of the winding shaft is slabbed off upon its opposite sides, as indicated at 132, and is cut away at 134-, thereby forming lateral projections 136. The cylindrical head 122 on the end of the rod 120 is provided with a longitudinal slot 13S to rcceive the end of the winding shaft, with recesses 140 to receive the lateral projections 136 on the shaft, and with projections 142 to engage the lateral projections on the shaft. With the end of the winding shaft and the head of the rod 120 in the relative positions shown in Fig. 8, by moving the rod longitudinally toward the shaft, the end of the shaft is engaged in the .slot 138, as shown in Fig. 9. lilith the parts in the positions shown in the latter figure, upon turning the winding shaft in the direction of the arrow, the lateral projections 136 on the shaft are engaged in the recesses 14:0, or are located behind the projections 1112 on the head of the rod. These relative movements are imparted to the rod and winding shaft in clamping a bobbin on the shaft.k

Before a bobbin is placed on the end of the winding shaft the sleeve 124, rod 120 and clamping devices 113 are swung rearwardly into the positions shown in full lines in Fig. 7, out of line with the winding shaft so that the end of the winding shaft 'is unobstructed. After a bobbin has been placed on the end of the winding shaft, the sleeve, rod and clamping device are swung back into axial alignment with the 'winding shaft. as 4shown in dotted lines in l? 7; The sleeve 12e is then fo 'ced longitinlinally to the right by the operator until the head 122 of the rod 120 engages the end of the winding shaft, and is then rotated until the end of the winding sha-ft engages in the slot 1616, as shown in Fig. 9. vWith the parte inthe relative positions shown in this figure. the operator, while 'holding the hand wheel 130, starts the machine by an actuation of the latch lever 63. As the winding` shaft starts to rotate, the rod 120 remains stationary and the lateral projections 136 on the shaft are enga-ged in the recesses 140 in the head of the rod behind the projections 1-i2. Upon the engagement of the lateral projections on the shaft with the end faces of the recesses, rotary movement is imparted to the rod 120 by the rotation of the winding The rotation of the rod 120, while the sleeve 124- ris held from rotation, will produce a relative longitudinal movement of the rod and the Sleeve 121i in a direction to draw the head ot the rod toward the inner end ot the sleeve. During the relative lon- `aitudinal movement ot the Sleeve and rod the projeethme il! on the head ot therod are drawn tirmlv ae'ainet the promotions 'lll on the winding fsha'tt, and the inner end ot' the ,sleeve is engaged 1with the clamping.;` member lits and 'torres the elampine; member lirmlv against the outer Side ot the bohhin. lllhenithe bobbin is; Securely clamped between the lange liti and the elanfipine' member litt the operator releases` the hand wheel lltl. allonine' `the Sleeve lllf to rotate Yi'reelv in the arm ltlt during; the remainder ot" the winding` operation. ett the eonuliletion olE the .rii'izliuef o't a bobbin. the ,viiitlilrrrr aha'lt ia rotating' in the dirertion ot' the ar row. liiej. l. anll in nnelainping` the bobbin trom the bobbin winding); elrirlt, the operator, while the hatt ie Still running. grasos the hand wheel lill). therebvv arreetine' the rotation ot the Sleeve lil- Through the Continued rotation ot the rod lil() a relative longitudinal movement ot the rod and sleeve will oeeur in a direction to projeet the head ot the rod 'troni the inner end ot the sleeve. illiel relative movement et the Sleeve and rod will relieve the elampingr member 119, from clampingl engagement with the outer eide ot the bobbiufand n'ill relieve the pressure otf the projections l-l aeainet the lateral proieetions 13G, allowing" the Winding ebaiit toiturn rehitivel;7 to the head 1:22 ot the rod into the position slioivn in Fie'. t). ln removing' the bobbin 'from the Winding ehi'i'ttn the rbd 120 moved longitudinail)v to the lett bv a long itiulinal movement ot the Sleeve ll-` andV the sleeve, rod and clamping` devices are then eating); into the positions shown in 'tall linee` in Fig. i to oeruiit the removal o'l the bobbin.

A The lforward movement ot the arm 126 ifs limited bv the enealeinent ot a projection lill on` the arm with an adjustable abutment :ferew titl. This abutment aeree' adjueted so that when the arm 19d is swung' into poeition to engage the nime@ tion lil-t with Said Soren', the Sleeve 124i-, rod 120. and clampingl device 11S will be loeated arein'atelv in arial alignmentn'it-h the Winding shait. To hold the arm 126 either in the position Shown in dotted lines in Fie: 'i'. or in the position Shown in toll linee` in raid ligure, the arm is engaged by the 'tree end oit a leat spring; l-tS seenred by a Screw lOto the trame. This spring` is arranged to engage a tlat 'tace 152 on the arm to hold the arm in the position shown in dotted linee` in Fie'. T. and to engage a tlat 'tace ll on the arm to hold the arm in the posiition shown in tull linee` in said tigure. To hold the end of the thread in startingI the winding;r otl a bobbin, the end of the thread may be inserted between the clamping;r member 1i lei and thetlange-on thebobbin, and clamped between said member and the bobbin when the bobbin ie clamped on the winding shaft.

lith the tiret part oit' the thread wound on the bobbin in one direction and the reni-.iinder ot' the thread wound in the opposite direction, in uuu'indinel the thread the inner end ol the thread or the end ot the part ollv the thread Wound in the first direction ie liable to be picked up by the unwinding thread be'tore the reverend in the direction of' the winding is reached, and a part or all ol' the thread Wound in the tiret direction will then be unwonnd Atrom the bobbin prematurelv. To prevent this dili'ienlty the inner end ol" the thread is wound in or Covered by several coils oit thread Wound in the tirst direction at the beginning` ol the winding; ot the thread on the bobbin. This result is produced by holdilli' the thread leading t'rom the Supply tothe bobbin eo that it is delivered to the bobbin eloeeto one ot the end flanges on the bobbin dnril'igj the Windingot several coils on the bobbin at the beg-inning ot the winding operation. The machine illustrated in the drawing' is provided with a thread guide lever 156 pivoted at 158 on the 'traine and termed with diverging project-ions 1GO and 1.62, the recess between `which torina a guide tor the tlnead. The movement ot' the thread guide lever about its pivot in one direction is limited by the engagement ot the rear end ot the lever with a stop pin lttl: and the lever is acted upon by a coiled spring: ltt which tende` to maintain the lever in engagement with the Stop pin. The position of the thread guide lever when engaged with the stop pin lill is euch that the thread, as; it passes through the thread guiding.;` reeees het-Ween the projections; 1GO and lt, is held eloee to the lett-hand flange ot the bobbin. 'l`he thread euide lever ie held in engagement with the Stop piu dui-hrer the windingl ot Several turni; or eoils oi thread on the bobbin at the beginnnrey oit the windingoperation. eo that the end ot the thread will be Covered by Several coils ol thread wound in the tiret direetion. ilitter the end ot' the thread is covered b v a number ot eoile` the thread guide lever is actuated to Swing the forward end thereof to the right toward the rightdiand thingie on the bobbin so thatthe thread is delivered to the bobbin nearer the central portion thereot'. To this,l end the rear end ot the thread guide lever ie arranged to be engaged by the lett-hand end ot the sha-tt T8 as said shatt is moved longitudinally to the lett during); the Winding` of the tiret part ot a bobbin. At the Start ot the winding` ot a bobbin when the shat't is located in its limiting' position toward the right, the poeition of the thread guide lever which is then held in engage- Sli vwinding operation.

ment with the stop pin 164 by the spring 166 is such that the rear end of the lever is located at some distance from the end of the shaft 78. Thus the thread as it is delivered to the bobbin is held by the thread guide lever close to the left-hand fiange of the bobbin during the winding of several coils of thread on the bobbin. After theJ winding shaft has executed a number of revolutions, the end of the shaft 78 engages the rear end of the thread guide lever, and by the continued longitudinal movement of the shaft to the left, the thread guide lever is swung gradually in a direction to carr1 the forward end of the lever to the right, or toward the right-hand flange on the bobbin. As the shaft 78, following the reversal in the direction of rotation of the winding shaft, moves longitudinally to the right, the thread guide lever under the action of the coiled spring 166 will swing back toward its original or starting position.

Figs. 11 to 16 inclusive illustrate the manner in which the thread is wound on the bobbin, the length of thread wound in the first direction on the bobbin being indicated at T in said figures, and the remainder of the thread to that wound in the second direction, at T.

Figs. 1l and 12 of the drawings illustrate the manner in which the winding of a bobbin is started with the thread held close to the left-hand flange of the bobbin by the thread guide lever. As shown in these figures, the thread at the beginning of the second turn or coil is laid across the end of the thread. it will not always happen that the end of the thread will be wound in by the second coil in this manner, but several coils may be wound on the bobbin before the thread end is covered. Figs. 13 and 14 illustrate the bobbin just after the direction of the winding of the thread on the bobbin is reversed` and shows the manner in which the thread is wound close to the left-hand fiange of the bobbin during the first part of the Figs. 15 and 1G illustrate a completely wound bobbin. and show the length of thread wound in the first direction on the bobbin covered by the thread wound in the second direction so that the latter thread is unwound first from the bobbin. lt is to be noted that the manner in which the inner end of the thread is wound in or covered by one or more coils of the thread wound in the first direction, will prevent the bobbin thread from being` threaded in the sewing machine in which the bobbin is used so that the thread wound in the first direction is drawn first from the bobbin.

Although the prevent invention was particularly designed to be embodied in machines Jfor winding sewing machine bobbius, certain features of the invention may be applied with advantage to machines for winding other forms of bobbins or thread carrier, and it is to be understood that the invention is limited only to the class of machines defined in the claims, and that it may be embodied in any form fairly within thc scope of the claims.

Having explained the nature and object of the invention, and having specifically described a machine embodying the various features therein in their preferred forms, what is claimed is:

1. i bobbin winding combination, a winding shaft, driving connections for driving the shaft in reverse directions, a registering mechanism for registering the revolutions of the winding shaft during the first part of the winding operation, and means controlled by the registering mechanism for shifting the driving connections to cause a comparatively short predetermined length of thread to be wound on the bobbin in one direction and the remainder of the thread to be wound on the bobbin in the opposite direction.

2. A bobbin winding machine, having, in combination, a winding shaft, driving connections for driving the shaft in reverse directions, mechanism for actuating and controlling the driving connections to drive the shaft in one direction during the winding of a relatively small number of turns of thread on the bobbin and to drive the shaft in the machine having in opposite direction during the winding of` the remainder of the thread on the bobbin comprising a timing mechanism actuated in definite relation to the winding shaft, and means controlled from the timing mechanism for shifting the driving connections to reverse the direction of rotation of the winding shaft at a predetermined point in the winding operation.

3. A bobbin winding machine, having, in combination, a winding shaft, driving con-- nections for driving the winding shaft in reverse directions, a latch for maintaining the driving connections in condition to drive he shaft in one direction, mechanism for automatically throwing out the latch after a comparatively short length of thread has been wound on the bobbin, and means for shifting the driving connections upon the release of the latch and for holding them shifted to drive the shaft in the reverse direction until the remainder of the thread has been woiind on the bobbin.

4t. A bobbin winding machine, havii g, in combination, a winding shaft, driving connections for driving the shaft in reverse directions, a latch for maintaining the driving connect-ions in condition to drive the shaft in one direction, means for automatically releasing the latch, means for shifting` the driving` connections upon the release of the latch to drive the shaft in the reverse dircciion, :ind nicnns Alor shitting' the driving conncctionsi to disconnect the sanne Jtroni the shzift.

"i hohhin Winding nnichine. having', in coinhinntion, n Winding` Shaft, driving' connectionS for driving the shzrit in reverse directions. n latch ifor ninintnininn` the driving' conncctioin: ont oi operative reintion to the '.-fhni't :ind Ytor innintnining riid connections in con-,lition to drive the Shn'lt in one. direction. mennol for actuating; the driving` connections' to coi'inect the Finne with toey fihzilt to dr'vc the shzift in one direction i '-on the iin'it reienre oit' the lotcln the hitch t en ogrerntingr to innintnin thc driving` connrc'ion. in operntive rclntion to the shnlt. ine: ne for nntoinnticnilv producing' :i second rclcnric ot the hitch, inechanisnl 'for Shifting;l 'the driving' connections upon the second reieinie or the hitch to drive the ehn't't in the reverre directionl :ind nienns 'tor shittino; the driving' connections to dieconnect the suine 'troni the shnt.

o. di hohhin winding' nnn'hine. hzivinn'. in ronihinntion, n Windingv nhnt, driving` eonncctions 'lfor driving' the shaft in reveree directions. n registering inechnnisin 'lor regie tering the revolutions of the Winding; Slinift dnrinn` the. tiret pnrt ot the `ivinding operotion conlpririne; n Second sshnt't, :i not in 'which mid Sli-nit if' threinled` ineons roi' relntively tnrninn' the second Shni't :ind the nnt in dn'inite relation to the winding Sli-(ift, ond nicnns` controlled h v the relntive longiindinnl niovcincnt ot' the .Second shnit und the not in one direction only 'tor shiitinglg the driving` eoiniections to reverSe the direction ot' rotntion oi the winding' shnit.

7. A ho'hbin winding nniehine. hzivinb, coinhinntion, :i Winding Sho ig driving` connections Jfor driving' the Shn'lit in reverse directions. n intch :for holding' the driving' coninetionr` ont o il operative relation to the winding' Shnil :1nd for holdingy the driving' connectione in condition to drive the shaft in one direction. und ninnri ior controllingy the hitch.

kSi. nlV hohhin vvindii'ig' nnichinc. having, in condiiinition, n winding` sliniit, driving' connectionn.` Yfor driving' the shzrlt in reverse di rectionsi n lotcli for holding the driving connections ont oit oiwrntive relation to the winding' rinvii' and for holding' the drivingV connectimis in condition to drive .the siinift in one directioin ninnnnliv-controlied inenns ior throwing' ont the lntch to stort the nur chine. :ind nnlonniticnllv-nctiiny menno to throw ont the hitch to conse the Shi'ltii'ie' ot the driving' connectionsy to reverse the direction of' rotntion o if the Winding short.

Si. fr hohhin Winding' innchine, having'` in coinliinniion. n Winding' shnlii. n thread ,finden inenns Afor relntivclv holding` the hobliin :ind thread guide stationary in position to guide the thread cloe to one innige oi' the o' in hohhin during' the winciini of one or niore coihv on the hohliin :itthc heninningi' oi" the n'iiidingf; operntion. :nld inenin: Por reintivelv shitting; the thrend ,amide nnd hohhin.

l0. A, bohhin winding); nnichine, having, in combination, n Winding shnitn driving connections for driving; thc slnitt, in reverse direetionn, nienns Y[or nctlnitino' :ind controlliner the drivingy connectiomi during the vindin nhniit in one direction diningl the Windinggl olf :i portion oi the thrend on the holihin nnd to drive the nhnlt, in, the reverse direction dnrine; the winding' oi the remainder oi.z the thread on the liohhin, :i tln'end ,e'nideyq und menne `For relatively; holding; the hohhin :ind thrend `:,nide in poniion to nitide the thread close to one thingie ot' the hohhin during` the winding` oi one or niore coils on the hohhin :it the heginningi of the winding operntion i :1nd 'lor rclntivelv ohiitingg' thethrend guide :and hohhin.

ll. A nohhin winding nmchinn having. in coinhinntion, zi winding' Shaft, driving' con` ncctioni-a vfor driving' the Wii'iding slnrlt in reverfe directions. nnd menno :ictini :intonniticnliy during; the winding operation to si i'ft the d rivinn` cf'innoctions to enlise n conipnrntively short predetermined length of lihi'end to he wound on the holihin in one direction :it the heginningg; of the winding operntion und the reinninder ol the tln'end to he 'wound on the hohhin in the opposite direc-tion.

l2. A hohhin Winding;` ninehine having, in conlhinntion, '.1 Winding.;` ehnftft, driving` connections 'tor driving' the vinding shaft in reverse dir etions, inenns noting :intonintifolly during the winding' ope 'ntion to shift the driving Connections to canse :i compu fntively Short predeerniined length of thread to be Wound on the hohhin in one direction :it the beginning ot' the Winding operation ond the renniinder ol? the tln'end to he wound on the bohhin in the opposite direction, :ind nienne 'lor verving*y the linie in the winding); operation nt which nnid Shiift occurs.

i3. A liobhin Winding' lnnchine having', in conihinntion. n winding); Ldurft, driving,l connections lor drivingl the winding` 'shzrft in reverse directions, und inenns meting); nutoinnti'nily during tho winding; ope 'ation to shift the driving1 connections` to conse n conipnrntively |short predetermined iengt-li oi thrnd to he wonnd on the hohbin in one direction nt the heginniiny; of the nf'inding ope 'ation nnd the remainder oi the thread to `ne wound on the hohliin in the opposite di- ,i'ectioin sind nie-uns comprising n timing niechzinigin operatively nctnnted during' the rotntion o'l the .vindinp; slnriit in one direction :ind rezet during' the rotntion oi the. winding' shaft; in the opposite direction.

li. it hohliin Winding ninhine having,

in combination, n winding Shaft, und menne operntion to drive the 'winding Sil) Hifi

rin

'for actuating said Shaft acting automatically to Wind a comparatively vshort predeten mined length of thread on the bobhin in one direction at the beginning ot' the Winding operation and the remainder of the thread on the hnhlrn the opposite direction.

15. A hohhin Winding machine having, in combination. a winding shaft, driving connections for driving the Winding shaft in reverse directions, and means acting automatically to throw out the connections for driving the shat't in one direction When a comparatively short predetermined length of thread has heen Wound on the hobhin at the beginning of the winding operation.

16. A bohbin Winding machine having, in combination, a Winding shaft, means for clamping a flanged sewing machine hohbin thereon, and means for rotating the shat't to Wind a comparatively short predetermined length of thread on the hobhin in one direction and the remainder of the thread on the bobbin in the opposite direction.

LAURENCE E. TOPHAM.

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