US2368379A - Spinning and twisting machine - Google Patents

Description

Jan. 30, 1945. y F M, RODDY 2,368,379

SPINNING AND TWI'STING MACHINE Filed Aug, 17, 1942 3 Sheets-Sheet l INVENTOR *BY m50 M. @000V Jan. 30, l F M RODDY v SPINNING AND TWISTING MACHINE Filed Aug. 17, 1942 3 sheets-sheet z INVENTOR FRED M. /PODDV Z ATToEY Jan. 30, A1945- F M RQDDY 2,368,379 SPINNING AND TwIsTING MACHINE Filed Aug. I7, 1942 s sheets-sheet s INVENToR FRED M. RODDV Patented Jan. 30, 1945 f 2,368,379 SPINNING AND TWIs'rING MACHINE Fred M. Roddy, Providence, R. I., assignor to H & B American Machine Company, a4 corporation of- Maine Application August 17,1942',seria1 No. 455,06074 Claims.

This invention relates generally to text-ile apparatus and particularly to improvements inthe driving system for the yarn feedingand drafting mechanisms of spinning, twisting and like machines.

One object of the invention is to provide a selfcontained compact unit assembly of gears forming a driving system by whichpower is transmitted for operatingthe feeding and drafting elements of machines of this class, and in which the arrangement of parts is such that-the unit can be readily attached to one'encl of suchmachine.

Another object of the invention is the vprovision of e. driving system incorporating the change gears controlling the twist on lboth sides of the machine in which the arrangement is such that it can be handled as afully assembled unitary structure and at the same time will afford a wide degree of flexibility in thatit 'is adaptable to produce a 'wide range of front roll speeds.

Another object of the invention` is to provide low tooth speed and a uniform tooth -speed regardless of the amountof twist that is being inserted in the yarn. ,l

Another object of the invention is the provision of independent twist on both sides of. the machine, and at the same time topermit reversibility of twist whereby either right or left hand twist can be readily and simply eiected.

Another object of -the-invention is the provision of a gear drive unit of the above character whereinall gearsare mounted'on ball bearings and the number of saidfball bearings and associated studs in the gearing system arel reduced to face of the swing arm which carries the two idler gears; Y

Fig. 6 is a perspective view of the bottom face of the other swing arm; r

Fig. 7 is a fragmentary detail View of anupper n corner portion of the unit mount showing the 'driving arrangement for one of the change gears;

and

Fig. 8 is a verticalv sectiontaken on the line y 8-8 of Fig. 7. y

In conventional machines of this class the driving system for the front rolls of the yarn feeding. and drafting mechanisms at both sides of the machine usually comprises a [considerable number of large diameter gearsA arranged in a f train between 'a pinion gear on. the main drive shaft and the' front draft rolls. .These large 1ntermediate gears are made with plain shaft bear- .ed on swing arms and the change gears are keyed .to the salme stud shaft to which is fixed a jack gear which meshes with the common driving pinion on the main drive shaft.,V

In such former machines this earlier form of driving system for the actuation' of. the feeding and drafting mechanisms has 'worked out satisfactorily only because the gear speeds' were usually. slow and the machines were operating less .continuously than is required under modern operating conditions.l

In the operation of present machines the spin dle speed and also the speed of the front draft rolls have been increased greatly in the last dec- Fig. 2 is a front elevationvof my improved unit mount having the swingarmsimounted 'thereon but with all gears. ball bearings and studs omitted;

Fig. 3 is a transverse ysection taken on the line 3-3 of Fig. 1;

Fi-g. 4 is a vertical section taken on the line 4-4 of Fig. 2;

Fig. 5 is a perspective view showingthe bottom vadeover what had hitherto been the accepted practice, and the continuous operation of such machineshas been much unore prevalent than in the past and brought about by the increased production demands under the modern practice.

Under ythe yconditions of increased speed .and pro? Vduction the various gears employed to drive the vfront rollsv wear out rather quickly and conseflllelltly require frequent replacement. The older gears and the gear train driving mechanism therefor are arranged on and carried by la commonmount which is so constructed and arranged as to VprovideV a compact unitary assemblyv of gearing for mounting at one end of the machine.

This unit mount comprises a bracket having two swing arms which carry the gearing for transmitting power from a common drive pinion to the two change gears. The swing arms are movable about a common pivot on the bracket and are arranged for independent movement into different adjusted positions thereon. One of the swing arms .carries two carrier or idler gears and kthe other vswing arm carries one carrier or lidler gear, the said carrier or idler gears being driven by a positively-driven pinion on a drive shaft coaxial with the pivotal axis of said swing arms and power is transmitted to the change gears by the respective carrier gears that .mesh there,-

with. The same twist is produced -on both sides of the machine by employing change gears of the same number of teeth. If independent twist is desired on each side of the machine change gears having a diiferent number of teeth will be used. `Interchanging the positions of the two swing that drives the carrier gears of the 'gear trains is chain driven .from a sprocket wheel Vwhich is mounted on the main drive shaft for Athe machine. I'he use of chains provideswide iiexibility of drive of the various mechanisms and aifords a wide range of location of the front Arolls and y:

the main driving shaft. The wide latitude in change ygear sizes enables the yadvantage of wide range of possible twis't,

Referring to the drawings .in'detaiL and particularly to Fig. .1, there isshown elements of a Atwister .frame comprising the head end frame member II) having 'box sides, the stationary rails II' Awhich support the spindles I2, I2', the vertically reciprocable ring rails I3, I3' which carry the rings and their travelers, and the bottom front drawing rolls I4, I4 which deliver the yarn to the spindles I2, l2' .for the twisting and packaging operations, all of which parts may be of the usual construction or arrangement em- .plOyed in such machines.

Upon the outer ends of the bottom front'rolls I4, lI4' disposed within the confines `of the head end frame member I0, are fixed sprocket-wheels I5, I5 which .by sprocket chains I6, I6', of the silent type, are connected to and driven vby sprocket wheels I1, I1' removably mounted on jack shafts I8, |8.. As illustrated in Fig, 8, the jack shafts I8, i8' are rotatably supported at their inner end portions .in suitable ball bearings I8 housed within triangular-shaped brackets 20,' 2 0', which are bolted to suitable lands formed at the upper corners of the mount or bracket 25 on which all the twist gearing mechanism is mounted for providing a unitary-gearing assembly for mounting onthe head end frame member of the machine.

Upon the jack shafts I8, I 8' are removably mounted the .change gears 2|, 2| which are driven .by the gearing mechanism that will be hereinafter described in detail. Shoes 22, 22'

lpivoted .to the Vouter ends ofthe curved arms 23,

bottom front drawing rolls I4, I4' consists of the unit mount or bracket 25 which, as above mentioned, is attached to the head end framel y:and terminate at the bottom edges of the depending legs 29, 29' Winch form the lower part of the arcuate apron section 21. The legs 29, 28' are symmetrically disposed on the apron sectionf21 and have flat opposed side faces which terminate fat' their inner ends in a semicircular opening concentric with the arcuate apron section and provide a relatively deep vertical slot extending upwardly from the bottom of the apron section when itis mounted in place on the machine.

shown in Figs. 3 and 4, vthe pinion 40 is keyed to the outer end of a stud shaft 4| mounted in ball bearings 42 disposed within the cylindrical vbore 43 of the bearing member 3|. The stud shaft 4| extends through Ythe bearing member' 3| into the hollow rear portion of the arcuate section 21 and upon the inner end of the shaft 4| within the circularly curved cavity` of the arcuate section 21 Ais fixed asprocket wheel 45 which by a sprocket chain -46 of the -silent type is connected to one of the sprockets Aof a double sprocket wheel 41 keyed tothe outer end of Athe main drive shaft for the machine. Power is transmitted from the main shaft 48 and thedouble sprocket 41 by means of the chain 49 and the sprocket wheel 50 to the shaft 5I which shaft serves to drive the traverse operating mechanism of :the machine. of various kinds are in common use in spinning and twisting machines of this class, and as the traversing mechanism forms no part of my present invention I have not deemed it necessary to illustrate or describe the same in detail.

The chain 46 is engaged by an idler sprocket 52 which is loosely .rotatable -on a slide arm 53 adjustably secured to the end frame |I| by a, bolt 54 passing through a slot 54 in the arm 53. The idler sprocket 52 engages the slack side of the chain 46, and said sprocket is adjusted to take up the slack therein by loosening the `bolt `54 and then sliding the arm 53 relative to said bolt until the sprocket has pushed all slack out of the chain after which the slide arm and the sprocket are maintained in their adjusted positions by tightening the bolt 54 to rigidly Secure the arm to the end frame member Il).

`As shown more clearly in Figs. 2 and 3, the swing arm 34 carries the carrier gear 3B which meshes with the driving pinion 40 and the change gear 2|, while the swing arm 35 carries the intermediate or carrier- gears 31 and 38 which have meshing engagement with each other and form a gear train in which the inner gear 31 meshes with the drive pinion 40 and the outer gear 38 meshes with the change gear 2 l Traversing mechanisms 2l,eee,379 "I'Ihe carrier gears 36, y3`| and 38 arerotatably The change gears 2| and 2|', as above mentioned, are removably mounted on the outer end of the jack shafts '|8 and I8', and one or both gears may be removed and replaced by a'gearA of i lo larger; or smaller size carrying the properfnunrber of teeth. to provide the desired twist per inch in the yarn. Also, the speed ratio between the low' er front rolls I4, I4' and the jack shafts |8, jI8' respectively may be changed by removing and replacing the sprockets I1 and II' by either larger or smaller sprockets. y l When it is desired to make la change inthe hand of the twist, i, e. from right to left hand and vice versa, the positions of the swing arms 34 and 35 are exchanged which is accomplishedv by loosening clamping bolts 65 and 66 from the T-headed nuts 61 and 68 disposed within the arcuate slot 28, by which the swing arms 34 and 35 are securely clamped in position on the apron 21, and then swinging the free swing arms around the hub 3U to take positions on the other side of.

the hub 30 with the idler gears 36 and 38 in mesh with thechange gears 2|" and 2| respectively.

It will thus be seen that by the described mounting o-f all of the twist gearing in a compact unit assembly on the head end of the machine and the flexible connection off the sprocket wheels I5, I5' and I1 by the sprocket chains I6, I6' respectively the advantage of flexibility of location of the fro-nt drawing rolls |4, I4 will be secured While maintaining an extremelywide range of possible twist per inc-h depending upon the size of the change gears 2|, 2| employed. f

In accordance with the present construction, advantage is gained in that the tooth speedjof the gear system is .always the same regardless of the size of the change gears that are used. The advantages of reversibility of twist and l.also independent twist are accomplished with fewer studs and gears as well as smaller gears than-has to my knowledge been accomplished before. These advantages are important since ball bearings and their mountings are expensive. Other advantages are: low tooth speeds atalltimes regardless of the size of the change gears employed; quiet operation and longer life of gears because of the said low tooth speed; increased life of, the unit as ya whole because of the use of -bal1 beardriving wheel being connected to and driven by one of the change gears and the driven wheel be' ing connected to the front roll to be driven; and a demountable support -for said driven change gears and their driving gearingfproviding. a unit assembly therefor attached to said end frame.

2. In a `spinning or twisting machine, the combination with an end frame and front rolls mounted on opposite sides thereof, of a driving system for the front rolls comprising a mainV drivingv pinion, means for actuating said` driving pinion, two change gears to be driven, gearing ing mountings-'for all gears; thereduction off the numberl olf studs andgears to a minimum; econ- 'omy in manufacturing the unit because oisaid reduction in the number of studs and gearsgand because or the reduced ldiameters of, the gears; and also reduced manufacturing cost and other obvious advantages due to the fact that the, assembly is constructed asa single self-contained unit. -v v I claim:

1. Ina spinning or twisting frame, the combination with an end frame and front drawing rolls mounted on opposite sides thereof, of adrivingsvstemI for the fro-ntrolls comprising a main driving pinion; means for actuating said driving pinion; two change gears tobe driven; gearing actuated by said drivingpinion and adapted to actuate said change gears; a flexible drive-,be-

-tween each of said change gears and the lfront rolls`to be driven, said flexible drives each vcomprising a'driving wheel, a driven wheel and a' exible connection between said wheels, the said actuated by said driving pinion and adapted to vactua'te said change gears, a chain gear drive between eachV oi saidvchange gears and thefront rolls to be' driven, the said chaink gear drives each comprising a chain and two sprockets one of which is adapted toy be actuated by thechange gear associated therewith `and the other sprocket being connected to the front roll tobe driven, and a demountable support for said driven change gears and their driving gearing providing a unit assembly therefor attached to said end frame.

3. In a spinning or twisting machine, the combination with an end frame and front rolls mounted on opposite sides thereof, of a driving system for the front rolls comprising a main driving pinion, means for actuatingsaid driving pinion,.two detachable 'change gears to be driven, two swing arms each adapted to be independently adjusted about a common axis, a carrier gear on onel of said arms meshing with said main driving pinion and one of said change gears, a gear train'on the other swing arm one of the terminal gears of said train meshing with said main driving pinion and the other `terminal gear of said train meshing with the second change gear, va

ated .by the change gear associated therewith andv the other sprocket being connected to the front roll to be driven, anda demountable support for said swing arms, said driven change gears and their driving gearing providing'a unit assembly therefor attached to said end frame. l

4. In a spinning or twisting machine, the combination with an end frame and front rolls .mounted on opposite sides thereof, of a driving system -for the front rolls comprising a main driving pinion, a driven sprocket adapted to ac.- tuate said main driving pinion, means for actuating said driven sprocket, two driven shafts, a detachable change gear on each of said shafts for driving the same, two swing arms each adapted to be independently adjusted about a common axis, a carrier gear on one of said swing arms meshing with said main driving pinion and rone of 'said change gears, a carrier gear train Ion the other swing arm one of the terminal gears of lsaid train meshing with said main driving pinion and the other terminalgear of said train meshing with the change gear tov be driven by said train, means for locking said swing arms in their respective adjustedv positions to maintain the gearing thereon in. operativerelation with the change gears to be driven, a chain drive between each of said change gears and the front rolls to be driven, the said chain gear drives Ashafts yand the change gears providinga unit as- Sembly attached to said end frame.

5. In a spinning or twisting machine, the combination with an end frame and front rolls mounted on opposite sides thereof, of a driving system for the front rolls comprising a main driving pinion, means' for actuating said driving pinion, two driven shafts, a detachable change gear on each of said shafts for driving the same, two swing arms each adapted to be independently swung about the axis of said main driving pinion into adjusted positions, a carrier gear on one rof said swing arms meshing with said main driv. ing pinion and one of said change gears, a carrier gear train on the other swing arm one of the terminal gears of said train meshing with said main driving pinion and the other terminal gear of said train meshing with the second change gear, means for locking said swing arms in their respective adjusted positions toy maintain the gearing thereon in operative relation with the change gears to be driven, a chain drive b etween each of said change gears and the front rolls to be driven, the said chain gear drives each comprising a chain and two sprockets one of which is adapted to be actuatedby the change gear associated therewith and the other sprocket being connected to the front roll to be driven, and a mount supporting said swing arms, driven shafts andthe change gears providing a unit assembly mounted on said end frame.

6, In a spinning or twisting machine, the combination with an end frame and front rolls mounted on opposite sides thereof, of a driving system for the front rolls comprising a main driving pinion, means for actuating said driving pinion, two driven shafts, a detachable change gear on each of said shafts for driving the same, two swing arms each adapted to be swung about the axis of said main driving pinion vinto adjusted positions, a carrier gear on one of said swing arms meshing. with said main driving pinion and one of said change gears, a carrier lgear train on the other swing arm one of the terminal gears of said train Ymeshing with said main driving pinion and the other terminal gear of said train meshing-with the second change gear, said swing arms being capable of movement from one side of the pivot to the other to connect the gearing carried by said arms with the change gears whereby the positions of said swing arms may be interchanged so as to permit the actuation of the change gears by the gearing on either swing arm, means for locking said swing arms 'in their respective positionsto maintain the gearing thereon in operative relation with the change gears to be driven, a chain drive between each of said change gears and the front rolls to be driven, the said chain gear drives each comprising a chain and two sprockets one of which is adapted to be actuated by the change gear associated therewith and the other sprocket being connected to the front roll to be driven, and a mount supporting said swing arms, .driven shafts and the change gears providing a unit assembly mounted on said end frame.

' 7. In a twisting machine, the combination of a stub shaft, means for driving said shaft, a pinion on said s'tubshaft and driven thereby, two driven shafts, chain drive wheels carried by said driven shafts'and, driven thereby, change gears removably mounted on said driven shafts, gearing'intermediate each said changegear and said pinion Afor driving said change gears and the chain drive wheels, vand mounting means for said intermediate gearing comprising vseparate swing Aarms independently 'adjustable about Athelaxi's of said stub shaft, together with means forlocking said .swing arms in their respective .adjusted positions.

8. In a twisting machine, the combination of a stub shaft, a sprocket wheel for driving said shaft carried at one end thereof, a pinion .on the other end of said shaft and driven thereby, two driven shafts, sprocket wheels on and driven by said driven shafts, change gears removably mounted on said driven shafts, gearing intermediate each said change gear and said pinion for driving said change gears, driven shafts-and .sprocket wheels, and a mount for said driven shafts and gearing comprising separate swing arms independently rotatable about the axis .of said stub shaft and means for llocking each-'said swin'g arm ,in its adjusted position about said axis. '9. Inan actuating mechanism for spinning and' twisting' machines, a main driving pinion, means for actuating said driving pinion, two driven shafts, a detachable change gear on each of said i shafts for driving the same, two swing arms each adapted 'to be adjusted about a common axis, a carrier gear on one of said swing arms meshing with said main driving pinion and one of said 'change gears, a carrier gear train on the other swing arm one of the terminal gears of said train meshing with said main driving pinion and the other terminal gear of said train meshing with the change gear to be Adriven by said train, a mount supporting said main driving pinion, swing arms, driven shafts and the change gears providing a unit assembly for attaching to one end of the machine, and means for locking said swing arms in their respective adjusted positions` on said mount with all of said gearing in operative relationship.

10. In an actuating mechanism for spinning about a common axis, a carrier gear on one of said swing arms meshing with said main driving pinion and one of said change gears, two carrier gears on the other swing arm one of which carrier gears meshing with said main drive ing pinion and the second carrier gearmeshf ing with the other change gearA to be driven, a mount supporting said main driving pinion, swing arms, driven shafts and the' change gears providing a unit assembly for attaching to one end' of the machine, and means for locking said swing arms in -their respective adjusted positions osaid mount with all of said gearing in operative relationship.

l1. In an actuating mechanism for spinning and twisting machines, a main driving pinion, means Afor actuating said driving pinion, two driven shafts, a detachable change gear on each of said shafts for driving thesame, twoswing arms each adapted to beswung .about .the axis of said maindrivingpinion intoadjustd po'sie tions, -a carrier gear on one of said swing arms meshing rwith said main driving pinion andv'one of said change gears, a carrier -gear train on the other swing arm one ofthe terminalg'ears of said train meshing withsaidmain driving pinion and the other terminal gear of said train meshing with the change gear to be drivenby said train, a mount supporting said main drive ing pinion, swing arms,` driven shaftsa-nd .the change gears providing a Aunit assembly for y ate taching to one end of the machine, and means for locking said swing arms in their respective adjusted positions on said mountl with all of said gearing in operative relationship.

12. In an actuating mechanism for spinning and twisting machines, a main driving pinion, means vfor actuating said driving pinion, two driven shafts, a detachable change gear on each of said shafts for driving the same, two swing ing carried by said arms with the change gears whereby the positions of said swing arms may be interchanged so'as to permit the actuation of the change gears by the gearing on either swing arm, a mountsuplporting said main driving pinion, swing arms, driven shafts and the change gears providing a unit assembly for attaching to one end of the machine, and means for locking said swing arms in their respective ,adjusted positions on said mount with all of said gearing in operative relationship.

13. In `an actuating mechanism for spinning and twisting machines, -a support, two driven shafts, anti-friction bearings rotatably mounting said shafts on said support, a sleeve-like bearing housing aXed to said support, a drive shaft, anti-friction bearings rotatably mounting said drive shaft within said bearing housing, a driving pinion on the outer end of said drive shaft, two swing arms movably mounted upon the outer cylindrical portion of said bearing housing, each of said swing arms being capable of being swung about said bearing housinginto adjusted positions on said suspport, a carrier gear on one` of said swing arms meshing with said driving pinion and one of said change gears, two carrier gears on the other swing arm one of which carrier gears meshing with said driving pinionv and the second carrier gear meshing with the other change gear to be driven, anti-friction `bearings rotatably mounting said carrier gears on studs fixed` c to the respective swing arms, and means for locking said swing arms in their respective adjusted positions relative to said support with all of said gearing in operative relationship, said support providing a unit assembly of all of the above mechanism for attaching to one end o-f the `machine. f

14. An actuating mechanism for spinning and twisting machines comprising a support formed with'an upper plate-like portion and a lower hollow raised arcuate portion, the front face of said arcuate portion being formed with an arcuate T-slot concentric with the circularly curved perimeter of said arcuate portion, a sleevelike bearing member affixed to said lower arcuate portion and co-axial therewith, a stub shaft journaled in said bearing member, a driving pinion on the outer end of said shaft, la gear on the inner end of said shaft within the hollow interior of said arcuate portion for actuating said stub shaft, two driven shafts rotatably mounted in said upper portion of said support, a detachable change gear on each of said shafts for driving the same, two swing arms movably mounted upon the outerycylindrical portion of said bearing member, each of said swing arms being capable of being swung about said bearing member into adjusted positions on said support, a carrier gear on one of said swing arms meshing with said driving pinion and one of said change with an upper plate-like portion and a lower hollow raised arcuate portion, the front face of said arcuate portion being formed with an arcuate T-slot concentric with the circularly curved Aperl imeter of said arcuate portion, a sleeve-like bearing member ai'lixed to said lower arcuate portion land co-axial therewith, a stub shaft, anti-friction bearings rotatably mountingsaid shaft in said bearing member, a driving pinion on the outer end of said shaft, a gear on the inner end of said shaft within the hollow interior of said arcuate portion for actuating said shaft, two driven shafts, anti-friction bearings rotatably mounting said driven shafts in said upper portion of said support, a detachable change gear on each of said driven shafts for driving theI same, two swing arms movably mounted upon the outer cylindrical portion of said bearing member, each of said swing arms being capable of being swung about said bearing member into adjusted positions on said support, a carrier gear on one of said swing arms meshing with said main driving pinion and one of said change gears, two

carrier gears on the other swing arm one of said carrier gears meshing with said driving pinion and the second carrier gear meshing with the other change gear Vto be driven, anti-fric.- tion bearings rotatably mounting said carrier gears on studs fixed to the respective `swing arms, and means coacting with said T-slot for releas- Y ably securlng said swing arms in their respective

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