US913895A

US913895A - Twisting-machine.

Info

Publication number: US913895A
Application number: US40011407A
Authority: US
Inventors: John L Inman
Original assignee: Individual
Current assignee: Individual
Priority date: 1907-10-31
Filing date: 1907-10-31
Publication date: 1909-03-02
Anticipated expiration: 1926-03-02

Description

J. L. INMAN. TWISTING MACHINE.

APPLICATION FILED 00131, 1907.

Patented Mar. 2, 1909. 1

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J. L. INMAN.

TWISTING MACHINE.

APPLICATION FILED 001*. 31, 1907.

91 3,895. Patented Mar. 2, 1909.

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TWISTING MACHINE.

APPLIOATION FILED 00131, 1907.

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TWISTING MACHINE.

APPLICATION FILED 001231, 1907 Patented M21122, 1909.

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APPLICATION IILED OCT. 31, 1907.

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JOHN L. INMAN, OF PUTNAM, CONNECTICUT.

TWIS'I'ING-MA CHINE To all whom it may concern:

Be it known that 1, JOHN L. INMAN, citizen of the United States, residing at Putnam, county of WVindham, and State of Connecticut, have invented certain new and useful Improvements in Twisting Machines, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to a cord twisting machine, and particularly to a construction in which the several successive steps of the operation are automatically erformed.

The invention has for an o ject to provide a novel and improved construction of the twisting head by which the cords are first independently twisted and then twisted together to form the completed article, the steps of this mechanism being automatically controlled through properly disposed cams I upon a shaft for that purpose.

A further object of the invention is to provide a novel and improved construction of the twisting jaw by which the cord is positively held against slipping and the opposite jaws mounted for independent rotation successively and for joint rotation with the head in completing the double twist.

Another object of the invention is to provide an improved construction and arrange ment of gearing and controlling cams therefor by which the time devoted to the twisting operation in the automatic machine may be varied as required for the size or length of cord operated upon at any particular time.

Another object of the invention is to provide an improved construction of feeding tube by which the cord is introduced into the twisting jaws and clamped by one of said jaws, while the outward movement of the carriage draws the cord through the other jaw until the proper length has been secured when the cord is clamped and cut by an automatically controlled device for that purose.

Other and further objects and advantages of the invention will be hereinafter set forth and the novel features thereof defined by the ap ended claims.

11 the drawings :-Figure 1 is an elevation showing the complete machine; Fig. 2 is an enlarged elevation of the front of the twisting head; Fig. 3 is a similar view of the rear thereof; Fig. 4 is an end elevation at the right of Fig. 2; Fig. 5 is a similar view at the left of Fig. 2; Fig. 6 is a longitudinal section Specification of Letters Patent.

Application filed October 31, 1907- Patented March 2, 1909.

Serial No. 400,114

on the line 6-6, Fig. 2; Fig. 7 is an enlarged section of the twisting jaws shown at the left of Fig. 6; Fig. 8 is a vertical section on the line 88, Fig. 2; Fig. 9 is a similar section on the line 99, Fig. 8 Fig. 10 is a vertical section 011 the line 1010, Fig. 2; Fig. 11 is a similar view on line 1111, Fig. 2; Fig. 12 is a similar view on the line 1212, Fig. 2; Fig. 13 is an. end view at the left of Fig. 2 showing the carriage in osition to carry the cord outward before tie twisting operation; Fig. 14 is a detail section of the positioning gear carried by the driving clutch; Fig. 15 is a detail elevation of the holding plate for connecting the twisters; Fig. 16 is a detail section showing this plate and the positioning gear upon which it is carried; Fig. 17 is a detail of the actuating cam for the cut off mechanism; Fig. 18 is a similar View of the delivering arm; Fig. 19 is a detail of the feeding tube; Fig. 20 is a plan of the cord before twisting; Fig. 21 is a similar view of the cord with the opposite ends twisted separately; Fig. 22 is a view of these ends twisted upon each other to produce the completed article.

Referring to the drawing, the numeral 1 designates a framework of any desired length or character which is provided with suitable rods or tracks 2 upon which the carriage 3 is ada ted to operate toward and from the twisting leads 4 disposed at the'power end of the frame. This carriage is provided with a spring held arm 5 over which the cord is looped and drawn outward through the twisting jaws thus to form a loop, as shown in Fig. 1, the opposite ends of which are held by the jaws when the carriage reaches its outward travel. The cord for this purpose is fed from any suitable part, for instance, the stand 7 adapted to carry a series of bobbins 8 through a feeding tube 9 sup ported at the outer end of the swinging arm 10 which in its travel is adapted to pass through the twisting jaws and insert the cord therein.

The twisting head from which the several operations are automatically controlled comprises the main shaft 11, as shown in Figs. 2 and 6, which carries belt pulley 12 having the hub 13 surrounding the shaft and pro vided with a driving pinion 14 for transmitting motion therefrom. The end of this shaft is also provided with a worm 15 for transmitting movement as hereinafter described. The interior of the belt pulley 12 is formed as one member of a friction clutch, the opposite member 16 thereof being slidably mounted upon the shaft 11 and provided with the collar 17 adapted to receive the free end of the controlling lever 18 which is pivotally mounted at 19 upon the frame of the machine, and the lower end 20 thereof is adapted to be shifted by the side face of the cam 21 disposed upon the cam shaft 22. The clutch 16 is provided with the rods or pins 18 extending therefrom and passing through the clutch member 19 from which the clutch 16 is normally sep arated by the coiled spring 20. \Vithin the clutch 19 a cooperating male member 21 is keyed upon the sleeve 24 by means of the feather 22, as shown by dotted lines in Fig. 6. This clutch member is provided with a flange 23 against which the tension springs 24 disposed within the positioning gear 25 are adapted to bear. The clutch 19 is also provided with the positioning gear 26, as shown in Fig. 14, each of these gears being provided with a cutaway or untoothed portion 27 which permits them to be rotated by a meshing gear until this portion is reached when they come to rest. Tlieclutch 19 is also provided with the locking flange 28 having a recess therein adapted to receive the projection 30 at the upper end of the lever 29, as shown in Fig. 11. This lever is pivoted upon the shaft 31 and the lower end 32 thereof controlled by means of the cam 33 mounted on the cam shaft 22 as before described. The clutch member 21 is carried by the sleeve 34 extending from the body 35 of the twisting jaws which body is rotatably mounted on the shaft 11. This body carries opposite bearings 36 in which the rotatable twisting jaws 37 are mounted said jaws being each provided with a gear 38 meshing with the main driving gear 39 on the end of the shaft 11. The jaws consist of the sliding bolts 40 provided with the spring 41 surrounding the same and normally forcing the bolt outward, as shown in Fig. 7. The face 42 at the outer end of the bolt is adapted to contact with the clamping frame 43 in which it is disposed thus to hold the cord against slipping and against any yielding of the spring tension of the jaw. The jaws are adapted to be opened at the proper time and periods by means of the sliding

collars

44 and 45 mounted upon the sleeve 34 and upon each other. The collar 44 is provided with a lug 46 by which it is connected to the end 47 of one of the jaws, while the other collar 45 is connected to the jaw by the lug 48 receiving the end 49 of the jaw, as shown in Fig. 7. The collar 44 is shifted by a lever 50 pivotally mounted at 51 upon the frame of the machine and having its lower end adapted to be operated by the side face of the cam 52 disposed on the cam shaft 22, while the collar 45 is controlled by a similar lever 53 pivoted at 54 and operated by the cam 55. These levers are connected together by a spring 56 to place them under proper tension. The positioning gear 25 is provided with the ho ding flange 100 having a recess 101 adapted to receive the projection 57 at the upper end of the lever 58 which is mounted on shaft 31 and has its lower end 59 bearing upon the cam 60 on shaft 22. proper tension by a depending rod 61 which is surrounded beneath the base of the machine by a spring 62 extending between the head 63 of the rod and said base. The holding lever 58 is provided at its upper end with a retaining plate 102 disposed to engage the face of the flange 23 of the clutch member 21. This clutch member with the holding flange 100 and positioning gear 25 move in unison when said holding flange is released by the lever 58 and the retaining plate 102 also releases the clutch member. This clutch member is normally held from an inward movement toward the clutch 19 by plate 102, while the holding flange 100 is retained against rotary movement by the projection 57. The rods or pins 18 are adapted to push the clutch member 21" out from 19 when the cord is completed and hold said member until the holding lever 58 moves into position to engage the parts as before stated.

At the rear of the machine a supplemental driving shaft 64 is disposed and carried by the bracket 65 rising from the frame, this shaft being provided with the driving gear 66 thereon and receives its power through bevel pinion 67 and connections to be hereinafter described. Pivotally mounted upon this shaft is a bearing 68 having an inwardly extending arm 69 which is provided with the lateral bearing 70 upon which a collar 71 is mounted to freely rotate and is provided with a gear 72 at one end and a gear 73 at the o posite end, the latter being adapted to trave upon the driving gear 66 in the swinging movement of the arm 69 toward and from the front of the machine. This gear 72 is adapted to mesh with the positioninggear 26 on the main shaft, and the gear 73 with the positioning gear 25 thereon. This arm is automatically swung to bring the driv ing gears for the positioning gears into contact therewith by the extended arm 74 thereof which reaches from the rock bearing 68 to the front of the machine, and is there actuated by a cam 75 on the shaft 22 when it is desired to throw the

gears

26 and 72 out of mesh. They are at other times held in mesh with the positioning gears by the rod 76 carrying'the tension spring 77 disposed between the head 78 of the rod and the under side of the machine frame. The shaft 22 is also provided with a cam 79 to hold the feeding arm 10 and its tube in lowered posi- This lever is maintained under tion against the tension of the spring upon the shaft thereof by which this arm is nor mally drawn upward. When the arm is lowered it may be locked in that position by means of the latch 81 pivotally mount-ed on the frame at 82 and adapted to engage the projection 83 on the hub of the arm (Fig. 5). This latch 81 is automaticall released when the carriage reaches the head by means of the lug or pin 84 thereon which rides beneath and raises the latch out of engagement with the projection 83 (Fig. 13). The hub of the arm is also provided with the lever 85 which rides upon the eriphery of the cam 79 to reoeive power t erefrom. This cam is also provided with a projection 86 upon its side face, as shown in Figs. 5 and 17 which bears upon the arm 87 carried by the rock shaft 88 for controlling the cut off or severing blade. This is accomplished through an arm 89 on the opposite end of the shaft 88 which bears u on the depending arm 90 of the cut off b ade 91 which is pivotally mounted at 92 in a suitable bearing 93 upon the frame of the machine. This arm 90 is also under tension of the spring 94 which is secured at the lower end 95 to the frame and bears at its upper end to normally throw the blade into raised position across the plate 96, as shown in Fig. 9. The cords passing to the twisting head extend through the aperture 97 in this plate when the blade is lowered by the action of the cam just described.

For the purpose of driving the cam shaft and other coperating parts for the twisting heads the ower is taken from the pinion 14 on the huff of the belt pulley 12 and transmitted by the gear upon the countershaft 111 which shaft is also provided with a pinion 112 meshing with the driving gear 113 mounted on the stub shaft on the bracket arm 114 at the rear of the machine. This gear is provided near its hub with the bevel pinion 115 meshing with the cooperating gear 116 having its hub 117 provided with the clutch member 118 which normally engages a cooperating clutch 119 carried by the sliding collar 120 which is splined upon the vertical drive shaft 121 at the upper portion thereof. The clutch members are normally held in contact by means of the spring 122 bearing against the base of the clutch and the upper portion of the bearing post 123. Secured to the shaft 121 is a bevel gear 124 adapted to mesh with the cooperating gear 125 secured to the cross shaft 126 which is mounted in bearings 127 on the frame and carries at its front end a worm 128 meshing with the worm gear 129 secured to the cam shaft 22. This cross shaft 126 is also provided with a second bevel gear 130 thereon which meshes with the pinion 67 disposed upon the end of the shaft 64 for driving the same, as shown in Fig. 3. The shaft 121 is provided with a worm 131 at its lower portion which meshes with the cooperating gear 132 secured on the shaft 133 extending across the back of the machine and carrying at its opposite end a bevel gear 134 meshing with the cooperating pinion 135 on the lower end of the vertically disposed shaft 136 from which the drive is taken to the means for removing the completed cord as hereinafter described. The lower end of the shaft 121 rests in an angle bearing 137 which is provided with the bevel pinion 138 meshing with the gear 139 secured on the shaft 140 which carries the driving wheel 141 over which the carriage controlling belt 142 passes.

In the gearing before described the clutch members are normally in contact and by the timing of the machine a fixed period is allowed for the twisting action. In twisting cord or hands of different diameter it be comes necessary to vary the time and for that reason the clutch is adapted to be disengaged so as to stop all portions of the n1achine controlled thereby leaving only the twisting aws to continue their action. The means shown for this purpose comprises a variable cam 145, as shown in Figs. 3, 4 and 2. This cam comprises a blade member preferably of segmental shape and secured to the hub 146 which is mounted to freely rotate upon the bearing shaft 147 and is provided with the clutch member 148 adapted to engage a similar member 149 carried upon the hub of the worm gear 150, as shown in Fig. 3. As it is desired to vary the length of time when the clutch shall be held open for suspending the operation of part of the driving mechanism this cam is adapted to be extended into its full area by means of plates, for instance, as shown at 151 in Fig. 4 where they rest upon the hub and are secured by any desired fastenings, as at 152 to the blade of the cam. Upon the periphery of these segmental blades, the inner end 153 of the lever 154 is adapted to rest and travel. This lever is pivoted at 155 upon the frame and provided with bifurcated arms 156 to embrace and operate clutch member 119 upon the shaft 121. The worm gear 150 and its clutch are adapted to be shifted by a lever 157 pivoted at 158 on the frame and engages the hub of the clutch at one end, while the opposite end 159 contacts with cam 160 secured upon the cam shaft 22, as shown in Figs. 2 and 4. For the purpose of driving this worm at a much slower speed than the rotation of the main driving gears a system of reducing gears is disposed to transmit power from the worm 1.5 driven from the belt pulley 12. The worm 15 meshes with the gear 161 carried by the shaft 162 which shaft is also provided with a worm 163 which in turn meshes with the gear 150 for driving the same.

The feed of the carriage 3 may be accomplished in any desired manner, and the driving wheels 1411 and belt 142 for that purpose are shown, this belt being carried over guide pulleys 165 and 166 so as to lie in parallel planes, while the carriage 3 is equipped with any desired form of grippers for the belt, for instance, a gripper for the upper strand, as shown at 167, and a similar gripper for the lower strand, as shown at 168, these being automatically operated from the pivotally mounted tappet levers 169 and 179, the former cooperating with the lower gripper, and the latter with the upper gripper. The tappet lever 170 is operated from a cam 171 disposed on the shaft 133, while the lever 169 is operated by a similar cam 172 on said shaft through the medium of the lever 173 and the connecting rod 17 1 extending to the lever 169. The carriage may also be main tained under tension when twisting by a Weight 175 connected by a cable 176 to the carriage frame. These parts are merely illustrated as one form of accomplishing the carriage movement and are not specifically claimed herein.

The feed tube 9 carried by the swinging arm 10 is composed of telescoping members comprising a cord carrier 177 mounted within a casing 178, said casing being open at one side, as shown in Fig. 19. The cord carrier is attached to the swinging arm by its angular end portion 179 provided with the

eyes

180 and 181 through which the cord is passed with its end projecting beyond the eye 181. The casing 178 is mounted to freely slide on the carrier and provided with the stop plate 182 which in its travel engages the cut ofi plate 96 to limit the travel of the casing and permit the continued movement of the carrier until the end of the eye 181 thereon is flush with the outer end of the casing. The casing is retained under tension in its sliding movement by means of the flat spring 183 connected to the arm 10 and to the inner end of the casing.

The delivering arms 184 are secured to the shaft 185 which is driven by bevel gear 186 meshing with the cooperating gear 187 upon the upper end of the shaft 136. The shaft 185 is mounted in a bearing in the upper end of the standard 188 to which a fixed cam 189 is secured so that the arm travels about said cam in the rotation of the shaft 185. The structure of the arm 18 1 is shown in Fig. 18, and this arm is provided at its outer end with a finger 190 suitably curved to facilitate passing over the twisted cord. Mounted upon the arm is a slide plate 191 having at its end afinger 192 to cooperate with the finger 190, and this plate is slotted and slidingly secured in position by screws 193 passing into the arm 184. The fingers are held normally in open or separated position by a tension spring 194 disposed between a lug 195 on the arm and a casing 196 at one side of the plate. Within this casing the bolt 197 is disposed to rest at its free end in contact with the arm 189. This bolt is held under yielding or spring tension by means of the spring 198 within the casing 196. One or more of these arms carrying the delivering fingers may be used as shown in 1, and where two are mounted upon the shaft 185, the twisted cord when released from the fingers may be deposited upon any desired support, as indicated at 199.

In the operation of the invention, as the carriage approaches the twisting jaws the latch controlling the swinging arm carrying the feed tube is tripped and the arm released and drawn upward by its spring so that the feed tube comprising both the cord carrier and casing passes through the shearing plate and the first gripping jaw, that is, from the position shown in Fig. 9 to that shown in Fig. 13 at which time the hook upon the carriage is behind the feed tube. The plate upon the casing of the tube engages the outer face of the shear plate and stops the movement of this casing, while the cord carrier with its projecting end of cord continues its travel until flush with the end of the casing thus extending the free end of the cord beyond the casing and through the second or right hand jaw of Fig. 13. This jaw is then closed by the actuating cam spring therefor and the feed tube moved backward by its controlling cam. During this movement the casing of the cord carrier is held by the spring on the arm so that the carrier can return to its normal position when it and both of the parts of the feed tube are then returned to the position shown in Fig. 5 and automatically latched. When in this position the carrier lies at sufficient distance away from the shear plate so as to leave an extended end of the cord to be in serted in the jaw upon the subsequent operation. At this time the cord is automatically drawn into a loop by the carriage and fed through the tube. The cord is now held by one jaw and free to move through the opposite jaw, while the carriage having its hook in contact with the loop in the cord travels outward for the desired length when it is automatically ungripped from its driving belt. lhe remaining open jaw is then permitted to close through its controlling cam the cord sheared and a rotation of each of the jaws effected so that each end of the loop of straight strands is twisted upon itself, as shown in Fig. 21, and then the entire twisting head is rotated as before described so as to twist the ends of the looped strands upon each other into the form shown in Fig. 22. The controlling cam 21 permits the coiled spring to force the clutch member into the driving pulley thus rotating the power shaft carrying the gear for operating the twisting jaws. "When the strands have received suificient twist, the revolving head is released by its controlling cam, and the clutch member ,21 thereof forced into the already rotating clutch 19 which is conncc t ed with the clutch 16 of the driving pulley. This revolves the head and the gears 38 of the jaws travel around the gear 39 of the power shaft, thus ceasing to twist the separate strands by the jaw rotation and twisting these strands u on each other. At this time the variab e twist for large or small bands is used as a smaller band requires a greater period of twisting than a larger one. In forming the large band the variable twisting cam is disconnected, leaving the clutch in mesh as there is suflicient time between the starting and stopping of the twisting or power shaft to give the required twist. For a small band requiring more twist, the cam is adjusted to allow the jaws to rotate longer before the revolving head starts, and after it does start the adj ust able cam controls the period of its operation. The control of the several twisting operations is effected through the cam shaft by the means hereinbefore described, and the length of time necessary for the several steps may be varied by an adjustable cam provided for that purpose as it is desirable to vary the time of the independent twisting of the ends relative to the quantity and size of the cord before the rotation of the head begins. At the completion of the twisting operations the arms carrying the delivery fingers are automatically carried upward in open position through the driving connection shown and as they engage the twisted cord are closed through the action of the fixed cam and continue in such position until the arm has made a partial revolution when they are again opened to drop the strand upon the support for that purpose. The carriage is then automatically gripped to the lower strand of its belt and. returned to its initial position for the insertion of another cord.

It will be seen that the invention presents a machine automatic in all of its functions by which looped and twisted bands or cords of any character may be formed with the minimum expenditure of time and power.

The machine is adapted to be driven from a single belt connection, and by reason of the cam shaft connections and the cams disposed thereon a variable twist motion for large or small cords may be effected. The twisting head provides holding jaws in which the cord may be most conveniently inserted and held against a solid bearing at the end of the jaw. This is important and desirable in a machine of this character in order that the twist of the cord and the pull of the traveling carriage should not be against a spring, and the cord or band firmly held during the entire operation, and from which it may be immediately released for removal.

The finished article may be formed from a single strand of proper diameter, or from a series of separate strands fed simultaneously from the bobbins.

Having described my invention and set forth its merits, what I claim and desire to secure by Letters Patent is 1. In a twisting machine, a frame, a twisting head provided with a plurality of twisting jaws comprising a relatively fixed clamping member and a cooperating bolt, a feed tube mounted to travel between said member and bolt, and a carriage movable toward and from said jaws.

2. In a twisting machine, a frame, a twisting head provided with a plurality of twisting jaws comprising a relatively fixed clamping member and a cooperating bolt, a feed tube mounted to travel between said member and bolt, a carriage movable toward and from said jaws, means for successively shifting said bolts, and means for rotating said jaws upon their axes.

3. In a twisting machine, a frame, a twisting head provided with a plurality of twisting jaws comprising a relatively fixed clamping member and a cooperating bolt, a feed tube mounted to travel between said member and bolt, a carriage movable toward and from said jaws, means for successively closing said jaws, means for rotating said jaws upon their axes, and means for rotating said head upon its axis and said jaws about the head axis.

4. In a twisting machine, a frame, a twisting head provided with a plurality of twisting jaws comprising a relatively fixed clamping member and a cooperating bolt, a feed tube mounted to travel between said mem her and bolt, a carriage movable toward and from said jaws, means for successively closing said jaws, means for rotating said jaws upon their axes, means for rotating said head upon its axis and said jaws about the head axis, and a shearing device disposed for automatic operation subsequent to the closing of the aws.

5. In a twisting machine, a frame, a twisting head provided with a plurality of twisting jaws, a pivoted feed tube retained under tension and mounted to travel in the path of said jaws, a carriage movable toward and from said aws and having means to release said tube, power means for retracting said tube, means for successively closing said jaws, means for rotating said jaws upon their axes, means for rotating said head upon its axis and said jaws about the head axis, a shearing device disposed for automatic op eration subsequent to the closing of the jaws, means for automatically opening said jaws to release the cord therefrom, and an automatically controlled delivery device for removing the twisted cord from the jaws and carriage.

6. In a twisting machine, a frame, a twist ing head mounted for rotation, independently controlled twisting jaws mounted in said head, a cam shaft, and independent cams thereon for separately controlling the opening and closing of each of said jaws and the rotation thereof and of the head.

7. In a twisting machine, a frame, a twisting head mounted for rotation, independently rotatable twisting jaws comprising a frame and clamping bolt mounted in said head, a cam shaft, cams thereon for controlling the independent opening and closing of each of said jaws and the rotation thereof and of the head, a driving shaft for said jaws having positioning gears thereon, and a countershaft provided with driving gears for the position ing gears to dispose said jaws in alinement when at rest.

8. In a twisting machine, a frame, a twisting head mounted for rotation, independently rotatable twisting jaws comprising a frame and clamping bolt mounted in said head, a cam shaft, cams thereon for controlling the independent opening and closin of each of said jaws and the rotation thereof and of the head, a driving shaft for said jaws having positioning gears thereon, a countershaft provided with driving gears for the ositioning gears to dispose said jaws in alinement when at rest, and a feed tube adapted to travel through one of said jaws.

9. In a twisting machine, a twisting head having a driving sleeve extended therefrom, a shaft extended through said sleeve and head and provided with a gear, rotatable twisting jaws mounted in said head and having pinions meshing with said gear, and a relatively fixed clamping jaw provided with a sliding bolt mounted to engage said fixed aw.

10. In a twisting machine, a rotatable head having driving sleeve extended therefrom, a shaft extended through said sleeve and head and provided with a gear, rotatable twisting jaws mounted in said head and having pinions meshing with said gear and comprising a casing extended from said jaws, spring actuated-bolts disposed to engage an opposite wall of said casing and means independently connected to said bolts.

11. In a twisting machine, a rotatable head having a driving sleeve extended therefrom, a shaft extended through said sleeve and head and provided with a gear, rotatable twisting jaws mounted in said head and having pinions meshing with said gear, and comprising a casing extended from said jaws, spring actuated bolts disposed to engage an opposite wall of said casing, controlling collars independently connected to said bolts, a shaft having cams thereon and shifting levers to engage said collars and cams.

12. In a twisting machine, a rotatable head having a driving sleeve extended therefrom, a shaft extended through said sleeve and head and provided with' a gear, rotatable twisting jaws mounted in said head and having pinio'ns meshing with said gear, and comprising a casing extended from said jaws, spring actuated bolts disposed to engage an opposite wall of said casing, controlling collars independently connected to said bolts, a cam shaft, disks secured to said shaft and having a cam projection upon the side face thereof. connecting levers between said 001- lars and cams, and a coiled spring connecting said levers to each other.

13. In a twisting machine, a frame, a twisting head, a driving shaft therefor provided with a sliding clutch member mounted thereon, a driving sleeve upon said shaft carried by said head, a cooperating sliding clutch member upon said sleeve and a connection between said clutch members for simultaneous release thereof.

14. In a twisting machine, a frame, a twisting head, a driving shaft therefor provided with a clutch member mounted thereon, a driving sleeve upon said shaft carried by said head, a cooperating clutch member upon said sleeve, a positioning gear upon said sleeve, a meshing driving member for said gear and a locking device for said gear.

15. In a twisting machine, a driving shaft, a twisting head carried thereby having a plurality of jaws, a parallel cam shaft, means controlled by said cam shaft for rotating said jaws, means for bodily rotating said head, and an adjustable cam for controlling the period of rotation of said head independently of said jaws.

16. In a twisting machine, a head provided with rotatable jaws, means for bodily rotating said head, a cam controlled clutch for transmitting power to the head rotating means and means cooperating with one member of said clutch for positioning the head after rotation.

17. In a twisting machine, a twisting head )rovided with holding jaws, a pivoted arm under spring tension, a feed tube carried by said arm to travel in the path of said jaws, a holding device adapted to automatically engage and retain said arm under tension, and a traveling carriage having a projection to release said holding device.

18. In a twisting machine, a twisting head provided with holding jaws, a pivoted arm under spring tension, a feed tube carried by said arm to travel in the path of said jaws, a holding device adapted to automatically engage and retain said arm under tension, a traveling carriage having a projection to release said holding device, an angularly disposed lever extended from the pivot of said arm, and a cam adapted to act thereon to place said arm under tension.

19. In a twisting machine, a twisting head provided with holding jaws, a pivoted arm under spring tension, a feed tube carried by said arm to travel in the path of said jaws, a holding device adapted to automatically engage and retain said arm under tension, a traveling carriage having a projection to release said holding device, an angularly disposed lever carried by said arm, a cam adapted to act thereon to place said arm under tension, a shear plate through which said arm travels, and a shear blade cooperating with said plate and automatically operated at the outward limit of travel of the carriage.

20. In a twisting machine, a twisting head provided with jaws, a shear plate disposed at one side thereof, a lever having at one end a shear blade to cooperate with said plate, a

rock shaft provided with an arm to engage and operate said lever and an opposite actuating arm thereon, and a cam to engage said actuating arm.

21. In a twisting machine, a twisting head provided with jaws, a shear plate disposed at one side thereof, a lever having at one end a shear blade to cooperate with said plate, a rock shaft provided with an arm to engage and operate said lever and an opposite actuating arm thereon, and a cam to engage said actuating arm.

22. In a twisting machine, a twisting head provided with jaws, a shear plate disposed at one side thereof, a lever having at one end a shear blade cooperating with said plate, a rock shaft provided with an arm to engage and operate said lever, a tension spring bearing upon the arm of the blade lever, an actuating arm for said reek shaft, and a cam to engage said actuating arm.

23. In a twisting machine, a twisting head provided with jaws, a shear plate disposed at one side thereof, a lever having at one end a shear blade cooperating with said plate, a rock shaft provided with an arm to engage and operate said lever, a tension spring bearing upon the arm of the blade lever, an actuating arm for said rock shaft, a cam having a side face to engage said actuating arm and a peripheral face, a swinging feed tube normally held under spring tension, and a lever from the axis of said tube bearing upon the peripheral face of said cam.

24. In a twisting machine, a twisting head provided with aws, a shear plate disposed at one side thereof, a lever having at one end a shear blade cooperating with said plate, a rock shaft provided with an arm to engage and operate said lever, a tension spring bearing upon the arm of the blade lever, an actuating arm for said rock shaft, a cam. having a side face to engage said actuating arm and a peri heral face, a swinging feed tube normal y held under spring tension, a iever from the axis of said tube bearing upon the peripheral face of said cam, a projection at the axis of said feed tube, and a pawl mounted to automatically engage said projection.

25' In a twisting machine, a twisting head provided with jaws, a shear plate disposed at one side thereof, a lever having at one end a shear blade cooperating with said plate, a rock shaft provided with an arm to engage and operate said lever, a tension spring bearing upon the arm of the blade lever, an actuating arm for said rock shaft, a cam having a side face to engage said actuatin arm and a peripheral face, a swinging feed tube normally held under spring tension, a lever from the axis of said tube bearing upon the peripheral face of said cam, a rojection at the axis of said feed tube, a paw mounted to automatically engage said projection, and a carriage provided with a ing adapted to engage and disconnect said pawl from said projection.

26. In a twisting machine, a twisting head, a cooperating feed tube comprising a cord carrier and easing slidably mounted thereon, a movable arm secured to said carrier, and means for limiting the movement of said casing in the travel of said tube.

27. In a twisting machine, a twisting head, a cooperating feed tube comprising a cord carrier and easing slidably mounted thereon, a movable arm secured to said carrier, means for limiting the movement of said casing in the travel of said tube, and a tension sprin carried by said arm and bearing upon said tube to normally extend it beyond the end of the carrier.

28. In a twisting machine, a twisting head, a cooperating feed tube comprising a cord carrier and easing slidably mounted thereon, a movable arm secured to said carrier, a lug for limiting the movement of said casing in the travel of said tube, a tension spring carried by said arm and bearing u on said tube to normally extend it beyond t 1e end of the carrier, an apertured shear late through which said casing travels and y which it is engaged, and a blade cooperating with said plate.

29. In a twisting machine, a head having 0 posite twistin jaws, and a feed tube adapted to traveI through one of said jaws and having a movable member to expose an extended cord adjacent to the opposite jaw to insert said extended cord therein.

30. In a twisting machine, a head provided with opposite aws, a feed tube comprising a cord carrier and a casing slidably mounted thereon, means for inserting said casing and carrier through one of said jaws, and means upon the casing for limiting the movement thereof and permitting a continued movement of the cord carrier.

31. In a twisting machine, ahead provided with opposite twisting aws, an arm provided with a feed tube having a movable member to expose an extended cord for inserting said cord within one of said jaws, a shearing device, means for normally retaining said tube under tension at one side of said jaws, and a carriage provided with a releasing device to engage the retaining means in the movement of the carriage toward said jaws.

32. In a twisting machine, a driving shaft, a twisting head mounted thereon and having independently rotatable jaws geared to said shaft, a gear for rotating said twisting head upon said shaft, a countershaft geared to the driving shaft, a driving gear upon said countershaft, a support pivotally mounted upon said countershaft and having a gear meshing with the gear upon the countershaft and the head rotating gear.

33. In a twisting machine, a driving shaft, a twisting head-mounted thereon and having independently rotatable j aws geared to said shaft, a gear for rotating said twisting head upon said shaft, a countershaft geared to the driving shaft, a driving gear upon said countershaft, a support pivotally mounted upon said countershaft and having a gear meshing with the gear upon the countershaft and the head rotating gear, said head driving gear having untoothed portion to position the parts after operation.

34. In a twisting machine, the combination with a twisting head and holding carriage movable toward and from said head, of a delivery arm mounted upon a rotatable shaft and having a fixed outer finger, means for automatically driving said shaft subsequent to the twisting operation, a sliding inner finger having a yielding cam contact mounted upon said delivery arm, means for normally separating said fingers, and a fixed cam adapted to move said fingers toward each other.

35. In a twisting machine, the combination with a twisting head and carriage movable relative thereto, of a rotatable shaft supported parallel to the axis of said head, a fixed cam, an arm secured to said shaft and provided with a fixed outer finger at its free end, a sliding plate mounted upon said arm and provided with a cooperating inner finger, a spring disposed between said plate and arm to normally separate said fingers, and yielding means carried by the plate to traverse said cam.

36. In a twisting machine, the combination with a twisting head and carriage movable relative thereto, of a rotatable shaft supported parallel to the axis of said head, a fixed cam, an arm secured to said shaft and provided with a fixed outer finger at its free end, a sliding plate mounted upon said arm and provided with a cooperating finger, a spring disposed between said plate and arm to normally separate said fingers, and aspring pressed pin carried by the plate to traverse said cam.

37. In a twisting machine, a power shaft provided with a twisting head, independently rotatable aws therein, a parallel shaft provided with a series of cams to control said jaws and the driving of said head, a worm carried by said driving shaft, a pinion -provided with a clutch member geared to said worm, a shifting lever connected to the clutch pinion, and a cam upon the cam shaft cooperating with said lever.

38. In a twisting machine, a power shaft provided with a twisting head, independently rotatable jaws therein, a parallel shaft provided with a series of cams to control said jaws and the driving of said head, a worm carried by said driving shaft, a pinion provided with a clutch member geared to said worm, a shifting lever connected to the clutch pinion, a cam upon the cam shaft cooperating with said lever, a cooperating clutch member provided with a cam plate, a clutch lever adapted to engage said plate, and means extending from said last mentioned clutch lever for driving said cam shaft.

39. In a twisting machine, a power shaft provided with twisting head, independently rotatable aws therein, a parallel shaft provided with a series of cams to control said jaws and the driving of said head, a worm carried by said driving shaft, a pinion provided with a clutch member geared to said worm, a shifting lever connected to the clutch pinion, a cam upon the cam shaft cooperating with said lever, a cooperating clutch member provided with a cam plate, a clutch lever adapted to engage said plate, means extending from said last mentioned clutch lever for driving said cam shaft, and means for adjusting the area of contact surface of said cam plate.

40. In a twisting machine, a driving shaft provided with a twisting head and independently rotatable jaws therein, a parallel cam shaft, means extending from said cam shaft to control said jaws and the rotation of said head, a vertically disposed shaft geared to said driving shaft, a pinion upon said vertical shaft, a transverse shaft geared to said pinion and provided with a worm at its opposite end, and a worm gear upon the cam shaft meshing with said worm.

il. In twisting machine, a driving shaft provided with a twisting head and inde endently rotatable jaws therein, a paralle cam shaft, means extending from said cam shaft to control said aws and the rotation of said head, a vertically disposed shaft geared to said driving shaft, a pinion upon said vertical shaft, a transverse shaft geared to said pinion and provided with a worm at its opposite end, a worm gear upon the cam shaft meshing with said worm, a secondary gear carried by said transverse shaft, a countershaft parallel to the driving shaft and having a pinion meshing with said secondary gear,

and geared connections from the countershaft to the twisting head.

42. In a twisting machine, a driving shaft provided with a twisting head and independently rotatable jaws therein, a parallel cam shaft, means extending from said cam shaft to control said jaws and the rotation of said head, a vertically disposed shaft geared to said driving shaft, a pinion upon said vertical shaft, a transverse shaft geared to said pinion and provided with a worm at its opposite end, a worm gear upon the cam shaft meshing with said worm, a secondary gear carried by said transverse shaft, a counter shaft parallel to the driving shaft and having a pinion meshing with said secondary gear, geared connections from the countershaft to the twisting head, a clutch member carried by said vertical shaft, an adjustable device for operating said clutch, and means geared from the driving shaft to actuate said device.

43. In a twisting machine, a driving shaft provided with a twisting head and independently rotatable jaws therein, a parallel cam shaft, means extending from said cam shaft to control said jaws and the rotation of said head, a vertically disposed shaft geared to said driving shaft, a pinion upon said vertical shaft, a transverse shaft geared to said pinion and provided with a worm at its op posite end, a worm gear upon the cam shaft meshing with said worm, a secondary gear carried by said transverse shaft, a countershaft parallel to the driving shaft and having a pinion meshing with said secondary gear, geared connections from the countershaft to the twisting head, a clutch member carried by -said vertical shaft, an adjustable device for operating said clutch, means geared from the driving shaft to actuate said device, and means disposed upon the cam shaft for rendering said device inactive.

44. In a twisting machine, a driving shaft provided with a twisting head and independently rotatable jaws therein, a parallel cam shaft, means extending from said cam shaft to control said jaws and the rotation of said head, a vertically disposed shaft geared to said driving shaft, a pinion upon said vertical shaft, a transverse shaft geared to said pinion and provided with a worm at its opposite end, a worm gear upon the cam shaft meshing with said worm, a secondary gear carried by said transverse shaft, a countershaft parallel to the driving shaft and having a pinion meshing with said secondary gear, geared connections from the countershaft to the twisting head, a clutch member carried by said vertical shaft, an adjustable device for operating said clutch, means geared from the driving shaft to actuate said device, means disposed upon the cam shaft for rendering said device inactive, a carriage driving belt, a

wheel therefor, and a gearing between the vertical shaft and said wheel.

45. In a twisting machine, a driving shaft provided with a twisting head. and independently rotatable jaws therein, a parallel cam shaft, means extending from said cam shaft to control said jaws and the rotation of said head, a vertically disposed shaft geared to said driving shaft, a pinion upon said vertical shaft, a transverse shaft geared to said pinion and provided with aworm at its opposite end, a worm gear upon the cam shaft meshing with said worm, a secondary gear carried by said transverse shaft, a countershaft parallel to the driving shaft and having a pinion meshing with said secondary gear, geared connections from the countershaft to the twisting head, a clutch member carried by said vertical shaft, an adjustable device for operating said clutch, means geared from the driving shaft to actuate said device, means disposed upon the cam shaft for rendering said device inactive, a carriage driving belt, a wheel therefor, a gear between the vertical shaft and said wheel, carriage controlling devices, and a shaft geared to the vertical shaft and provided with cams to actuate said devices.

46. In a twisting machine, a driving shaft provided with a twisting head and independently rotatable jaws therein, a parallel cam shaft, means extending from said cam shaft to control said jaws and the rotation of said head, a vertically disposed shaft geared to said driving shaft, a pinion upon said vertical shaft, a transverse shaft geared to said pinion and provided with a worm at its opposite end, a worm gear upon the cam shaft meshing with said worm, a secondary gear carried by said transverse shaft, a countershaft parallel to the driving shaft and having a pinion meshing with said secondary gear, geared connections from the countershaft to the twisting head, a clutch member carried by said vertical shaft, an adjustable device for operating said clutch, means geared from the driving shaft to actuate said device, means disposed upon the cam shaft for rendering said device inactive, a carriage driving belt, a wheel therefor, a gearing between the ver tical shaft and said wheel, carriage controlling devices, a shaft geared to the vertical shaft and provided with cams to actuate said devices, a delivery arm mounted upon a rotatable shaft, a vertically disposed shaft geared to said delivery shaft, and a gear connection between said vertically disposed shaft and the shaft for the carriage controlling means.

47 In a twisting machine, a driving shaft, a pulley provided with a clutch member and loosely mounted upon said shaft, a cooperating clutch slidably keyed upon said shaft,

a twisting head having a sleeve rotatably mounted on said shaft, a head clutch supported on the driving pulley clutch to rotate therewith, and a cooperating clutch slidably mounted on said sleeve.

48. In a twisting machine, a driving shaft, a pulley provided with a clutch member and loosely mounted upon said shaft, gear carried by the hub of said pulley, a cooperating clutch slidably keyed upon said shaft, a twisting head having a sleeve rotatably mounted on said shaft, a head clutch supported on the driving pulley clutch to rotate therewith, a cooperating clutch slidably mounted on said sleeve, a positioning gear secured to said sleeve and driven by connections from said hub gear, and tension springs disposed between said positioning gear and the sleeve clutch member.

49. In a twisting machine, a driving shaft, a pulley provided with a clutch member and loosely mounted upon said shaft, a gear carried by the hub of said pulley, a cooperating clutch slidably keyed upon said shaft, a twisting head having a sleeve rotatably mounted on said shaft, a head clutch sup ported on the driving pulley clutch, a coolperating clutch slidably mounted on said s eeve, a positioning gear secured to said sleeve and driven by connections from said hub gear, tension springs disposed between said positioning gear and the sleeve clutch member, a tension spring disposed between the sliding pulley clutch and the clutch member carried thereby, and push rods carried by the pulley clutch member to engage and operate the head clutch member.

50. In a twisting machine, a driving shaft, a pulley provided with a clutch member and loosely mounted upon said shaft, a gear carried by the hub of said pulley, a cooperating clutch slidably keyed upon said shaft, a twisting head having a sleeve rotatably mounted on said shaft, a head clutch supported on the driving ulley clutch, a cooperating clutch slidab y mounted on said sleeve, a positioning gear secured to said sleeve, tension springs disposed between said gear and the sleeve clutch member, a tension spring disposed between the sliding pulley clutch and the clutch member carried thereby, push rods carried by the pulley clutch member to engage and operate the head clutch member, a positioning gear carried on the pulley clutch member, driving gears for both positioning gears shiftably mounted to contact therewith.

51. In a twisting machine, a driving shaft,

. a pulley provided with a clutch member and loosely mounted upon said shaft, a gear carried by the hub of said pulley, a cooperating clutch slidably keyed upon said shaft, a twisting head having a sleeve rotatably mounted on said shaft, a head clutch supported on the driving nilley clutch, a cooperating clutch slidab y mounted on said sleeve a positioning gear secured to said sleeve, tension springs disposed between said gear and the sleeve clutch member, a tension spring disposed between the sliding pulley clutch and the clutch member carried thereby, push rods carried by the pulley clutch member to engage and operate the head clutch member, a positioning gear carried on the pulley clutch member, driving gears for both positioning gears shiftably mounted to contact therewith, a shifting lever for the pulley clutch member, and a cam shaft having an actuating camfor said lever.

52. in a twisting machine, a driving shaft, a pulley provided with a clutch member and loosely mounted upon said shaft, a gear carried by the hub of said pulley, a cooperating clutch slidably keyed upon said shaft, a twisting head having a sleeve rotatably mounted on said shaft, a head clutch supported on the driving ulley clutch, a co'o'perating clutch slidab y mounted on said sleeve, a positioning gear secured to said sleeve, tension springs disposed between said gear and the sleeve clutch member, a tension spring disposed between the sliding pulley clutch and the clutch member carried thereby, push rods carried by the pulley clutch member to engage and operate the head clutch member, a positioning gear carried on the pulley clutch member, driving gears for both positioning gears shiftably mounted to contact therewith, a shifting lever for the pulley clutch member, a cam shaft having an actuating cam for said lever, a locking lever for the pulley clutch positioning gear, and an actuating cam on the cam shaft for said lever.

53. In a twisting machine, a driving shaft, a pulley provided with a clutch member and loosely mounted upon said shaft, a gear carried by the hub of said pulley, a cooperating clutch slidably keyed upon said shaft, a twisting head having a sleeve rotatably mounted on said shaft, a head clutch supported on the driving ulley clutch, a cooperating clutch slidab y mounted on said sleeve, a positioning gear secured to said sleeve, tension springs disposed between said gear and the sleeve clutch member, a t ISiOIl spring disposed between the sliding pulley clutch and the clutch member carried thereby, push ro ls carried by the pulley clutch member to engage and operate the head clutch member, a positioning gear carried by the pulley clutch member, driving gears for both positioning gears shift-ably mounted to contact therewith, a shifting lever for the pulley clutch member, a cam shaft havin an actuating cam for said lever, a locking lever for the pulley clutch positioning gear, an actuating cam on. the cam shaft for said lever, a locking lever for the positioning gear of the head sleeve, and a cam upon the cam shaft for actuating said positioning gear lever.

54. In a twisting machine, a driving shaft, a pulley provided with a clutch member and loosely mounted upon said shaft, a gear carried by the hub of said pulley, a coi'merating clutch slidably keyed upon said shaft, a twisting head having a sleeve rotatably mounted on said shaft, a head clutch supported on the driving pulley clutch, a co 0 crating clutch slidably mounted on said s eeve, a positioning gear secured to said sleeve, tension springs disposed between said gear and the sleeve clutch member, a tension spring disposed between the sliding pulley clutch and the clutch member carried thereby, push rods carried by the pulley clutch member to engage and operate the head clutch member, a positioning gear carried by the pulley clutch member, driving gears for both positioning gears shiftably mounted to contact therewith, a shifting lever for the pulley clutch member, a cam shaft having an actuating cam for said lever, a locking lever for the pulley clutch positioning gear, an actuating cam on the cam shaft for said lever, a lockinglever for the positioning gear of the head sleeve, a cam upon the cam shaft for actuating said lever, a pivotal support for the driving gears of the positioning gears, and a cam upon said shaft for oscillating said support.

55. In a twisting machine, a driving shaft, a pulley provided with a clutch member and loosely mounted upon said shaft, a gear carried by the hub of said pulley, a cooperating clutch slidably keyed upon said shaft, a twisting head having a sleeve rotatably mounted on said shaft, a head clutch sup ported on the driving pulley clutch, a cooperating clutch slidably mounted on said sleeve, a positioning gear secured to said sleeve, tension sprin s disposed between said gear and the sleeve clutch member, a tension spring disposed between the sliding pulley clutch and the clutch member carried thereby, push rods carried by the pulley clutch member to engage and operate the head clutch member, a positioning gear carried by the pulley clutch member, driving gears for both positioning gears shiftably mounted to contact therewith, a shifting lever for the pulley clutch member, a cam shaft having an actuating cam for said lever, a locking lever for the pulley clutch positioning gear, an actuating cam on the cam shaft for said lever, a locking lever for the positioning gear of the head sleeve, a cam upon the cam shaft for actuating said lever, a pivotal support for the driving gears of the positioning gears, a cam upon said shaft for oscillating said support, gripping jaws carried by said head and having shifting collars extending therefrom,

pivoted levers engaging said collars, and 'ains upon said cam shaft for operating said collars.

56. in a twisting machine, a driving shaft, a pulley provided with a clutch member and loosely mounted upon said shaft, a gear carried by the hub of said pulley, a cooperating clutch slidably keyed upon said shaft, a twisting head having a sleeve rotatably mounted on said shaft, a head clutch supported on the driving pulley clutch, a cooperating clutch slidably mounted on said sleeve, a positioning gearsecured to said sleeve, tension springs disposed between said gear and the sleeve clutch member, a tension spring dis osed between the sliding pullcy clutch and t 10 clutch member carried thereby, push rods carried by the pulley clutch member to engage and operate the head clutch member, a positioning gear carried by the pulley clutch member, driving gears for both positioning gears shiftably mounted to contact therewith, a shifting lever for the pulley clutch member, a cam shaft having an actuating cam for said lever, a locking lever for the pulley clutch positioning gear, an actuating cam on the cam shaft for said lever, a locking lever for the positioning gear of the head sleeve, a cam upon the cam shaft for actuating said lever, a pivoted support for the driving gears of the positioning gears, a cam upon said shaft for oscillating said support, gripping jaws carried by said head and having shifting collars extending therefrom, pivoted levers engaging said collars, cams upon said cam shaft for operating the collars, a feed tube cooperating with said gripping jaws, a shearing device cooperating with said tube, and a cam upon the cam shaft having a face to operate said feed tube and a face to operate said shearing device.

57 In a twisting machine, a driving shaft, a pulley provided with a clutch member and loosely mounted upon said shaft, a gear car ried by the hub of said pulley, a cooperating clutch slidably keyed upon said shaft, a twisting head having a sleeve rotatably mounted on said shaft, a head clutch supported on the driving ulley clutch, a cooperating clutch slidabl y mounted on said sleeve, a positioning gear secured to said. sleeve, tension springs disposed between said gear and the sleeve clutch member, a tension spring disposed between the sliding pulley clutch and the clutch member carried thereby, push rods carried by the pulley clutch member to engage and operate the head clutch member, a positioning gear carried by the pulley clutch member, driving gears for both positioning gears slidably mounted to contact therewith, a shifting lever for the pulley clutch member, a cam shaft having an actuating cam for said lever, a locking lever for the pulley clutch positioning gear, an actuating cam on the cam shaft for said lever, a locking lever for the positioninggear of the head sleeve, a cam upon the cam shaft for actuating said lever, a pivoted support for the driving gears of the positioning gears, a cam upon said shaft for oscillating said support, gripping ws carried by said head and having shifting collars ext icing t nerefrom, pivoted levers engaging said collars, cams upon said cam shaft for operating the collars, a feed tube cooperating with said gripping jaws, a shearing device cooperat'ng with said tube, a cam upon the cam shaft having a face to operate said feed tube and a face to operate said shearing device, a driving gear on said cam shaft geared to the gear upon said driving pulley, and an intermediate clutch mechanism in said gear connections.

58. In a twisting machine, a driving shaft, a pulley provided with a clutch member and loosely mounted upon said shaft, a gear car ried by the hub of said pulley, a cooperating clutch slidably keyed upon said shaft, a twisting head having a sleeve rotatably mounted on said shaft, a head clutch supported on the driving pulley clutch, a cooperating clutch slidably mounted on said sleeve, a positioning gear secured to saic sleeve, tension springs disposed between said gear and the sleeve clutch member, a tension spring disposed between the sliding pulley clutch and the clutch member carried thereby, push rods carried by the pulley clutch member to engage and operate the head clutch member, a positioning gear carried by the pulley clutch member, driving means for both positioning gears slidably mounted to contact therewith, a shifting lever for the pulley clutch member, a cam shaft having an actuating cam for said lever, a locking lever for the pulley clutch positioning gear, an actuating cam on the cam shaft for said lever, a locking lever for the p ositioning gear of the head sleeve, upon the cam shaft for actuating said lever, a pivoted support for the driving gears of the positioning gears, a cam upon said shaft for oscillating said support, grippi g jaws carried by said head and having shi ting collars extending therefrom, pivoted levers engaging said collars, cams upon said cam shaft for operating the collars, a feed tube cooperating with said gripping jaws, a shearing device cooperating with sa'd tube, a cam upon the cam shaft having a face to operate said feed tube and a face to operate said shearing device, a driving gear on said cam shaft geared to the gear upon said driving pulley, an intermediate clutch mechanism in said. gear connections, an operating lever for said clutch, a cam plate for actuating said lever, a clutch driving mechanism for said plate, and a cam upon the cam shaft for controlling said clutch mechanism.

59. In a twisting machine, a shaft, a clutch member slidably secured thereto, a head provided with a driving sleeve, a clutch member slidably secured to said sleeve and provided witn a projecting flange at one end, a recessed positioning gear, a tension spring between said gear and flanged clutch member, and a locking lever having a projection to enter the recess of said gear, and an extension to engage the flange of the clutch member.

60. ln a twisting machine, a shaft, a clutch member slidably secured thereto, a head provided with a driving sleeve, a clutch member slidably secured to said sleeve and provided with a projecting flange at one end, arecessed positioning gear, a tension spring between said gear and flanged clutch member, a looking lever having a projection to enter the recess of said gear and an extension to engage the flange of the clutch member, a driving shaft, a cone fitted thereon and provided with push rods, and means for shifting said cone upon the shaft and disconnect the sleeve clutch member by contact of said rods therewith.

51. In a twisting machine, a driving shaft provided with a twisting head, a parallel cam shaft for controlling said head, a vertically disposed transmitting shaft having a pinion loosely mounted at its upper end geared to said driving shaft, a clutch member carried by the hub of said pinion, a spring pressed cooperating clutch member slidably mounted upon said vertical shaft, a gear carried by said shaft, and a transverse shaft having a pinion meshing with said gear and driving means for said cam shaft.

62. In a twisting machine, a driving shaft provided with a twisting head, a parallel cam shaft for controlling said head, a vertically disposed transmitting shaft having a pinion loosely mounted at its upper end geared to said driving shaft, a clutch member carried by the hub of said pinion, a spring pressed cooperating clutch member slidably mounted upon said vertical shaft, a gear carried by said shaft, a transverse shaft having a pinion meshing with said gear and driving means for said cam shaft, a shifting lever connected to said sliding clutch member, and a driving cam member for actuating the free end of said lever.

63. In a twisting machine, a driving shaft provided with a twisting head, a parallel cam shaft for controlling said head, a vertically disposed transmitting shaft having a pinion loosely mounted at its upper end geared to said driving shaft, a clutch member carried by the hub of said pinion, a spring pressed cooperating clutch member slidably mounted upon said vertical shaft, a gear carried by said shaft, a transverse shaft having a pinion meshing with said gear and driving means for said cam shaft, a shifting lever connected to said sliding clutch member, a cam plate for actuating said lever, and an adjustable eX- tension mounted upon said cam plate.