US2056028A - Machine for making coiled-coils - Google Patents

Description

Sept. 29, 1936. s. WADSTEN MACHINE FOR MAKING COILED COILS Filed Oct. 27, 1953 4 Sheets-Sheet 1 mmO m Sept. 29, 1936. I I s w s 2,056,028-

MACHINE FOR MAKING'COILED COILS INVENTOR 5". WADSff/V.

ATTORNEY Filed. Oct. 27, 1955 4 Sheets-Sheet 2 '1 P 1936- s. WADSTEN MACHINE FOR MAKING COILED COILS Filed Oct. 27, 1935 4 Sheets-Sheet 3 INVENTOR 5. WARW'f/V- 4 714} I ATTORNEY Sept. 29,1936. s. WADSTEN 2,056,028

' MACHINEQFOR MAKING COILED. CO'ILS Filed Oct. 27, 1955 4 Sheets-Sheet 4 INVENTOR v s? WADJHW.

ATTORNE Patented Sept. 29, 1936 UNETED STATES PATENT oFF cE MACHINE FOR MAKING COILED-COILS Sten Wadsten, Bloomfield, ,N. Y J., assignor to Westinghouse Lamp Company, a corporation of Pennsylvania Application October 27, 1933, Serial No. 695,379 36 Claims. (CL 153 -64) This invention relates to a machine for making coiled-coils and relates more particularly toa is especially adapted to produce filaments for electric incandescent lamps.

As pointed out in the above mentioned patent, lamp filaments of the coiled-coil type are usually made by first forming a wire into a helical coil either by winding on a mandreland dissolving out the mandrel or on a mandrelless coil-winding A Patent No. 1,670,499 issued May 22, 1928. The

machine of this patent forms a coil without the use of a mandrel and serves to produce a primary coil which is fed to mechanism which operates upon the coil to form it into a secondary coil.

Although the present mechanism maybe employed to either operate upon a helically coiled filament as it issues from a mandrelless coilwinding machine, it may also be employed to operate upon an indefinite length of helically coiled wire which has previously been made on a machine which employs a mandrel. In this case the mandrel may be removed in the usual manner and the coiled wire may be wound on a spool and fed to the present mechanism to form a secondary coil.

The selected embodiment of the invention, however, includes mechanism for making a secondary coil in conjunction with a mandrelless coil-winding machine as shown and described in the above last mentioned patent.

It is an object of the present invention, therefore, to provide a simple and effective arrange- H ment of machine elements capable of diverting a, primary helical coil into a secondary helical coil.

- Another object of the invention is to provide means operating in conjunction with a coil-windings in which I v Fig. l isaside elevational view of a mandrelless ing machine to divert the coil produced into a secondary coil.

Another object of the invention is to provide mechanism whereby a helical coil wound on a mandrelless machine may be moved through a predetermined path adjacent to mechanism openating to progressively engage the successive turns of the coil to form the same into a secondary coil.

Other objects and advantages of the invention will be understood from the accompanying drawcoil-winding machine including mechanism for shaping a primary coil into a secondary coil;

Fig. 2 is a plan View of the machine shown in Fig. 1;

Fig. 3 is a view taken on line III-III in Fig. 2; I Fig. 4 is a view looking in' the direction indicated by arrows IV--IV in Fig. 2;

Fig. 5 'is'an enlarged detail view of mechanism for operating upon a primary coil to form the same into a secondary coil;

Fig. 6 is across sectional view of the mechanism shown in Fig. 5 showing mechanism for holding the secondary coil in position to enter a guide passage;

Fig. '7 isan enlarged diagrammatic view indieating the primary coil as it issues from the die and formed into a secondary co-il;

Fig. 8 is a view taken on line VIII-VIII in Fig. -7; and

'mechanism indicated as a whole by the numeral ill and 'abase 92 for reduction gearing l3. The

reduction gearing is actuated by a motor l4 provided with a pulley l5 and a belt l6 which trans: mits motion to a pulley H at one end of a shaft l8 journalled in a bearing bracket IS. The shaft [i8 is" connected to one end of an extension shaft it by a universal coupling 22. The other end of this shaft is connected to one end of a stub shaft 23 by means of a universal coupling 24. The other end of the shaft 23 is secured to gear segment 5| constituting part of mechanism, to be later described, for diverting a primary coil into a secondary coil. 1

ing 29.

The mechanism II for forming the primary coil includes a disk 26 on the shaft 18. This disk is provided with a single tooth disposed to engage teeth of a gear wheel 21 on a shaft 28. The segment 25 is mounted on an arm 3| one end of which is pivoted at 32 (see Fig. 3). The opposite end of the arm is provided with a set screw 33' which seats on a stop 34'. Thus the position of the toothed disk 26 may be adjusted with respect to the pitch line of the teeth on the gear wheel 27. By this means a fine regulation may be obtained with respect to the relative movements of disk 26 and the gear wheel 21. As will be later understood, the tooth on the disk 26 causes a given movement of the gear wheel 21 which movement must be so governed that other mechanism will be regulated accordingly. Owing to the extremely small dimensions of the primary coil being formed the degree of movement of the operative parts is extremely small and, although the amount of adjustment attained by slightly moving the disk 26 is small, it is in fact relatively great in so far as the present operations are concerned.

The disk 26 causes a movement of the gear wheel 21 which is mounted on the stub shaft 28 thus transmitting motion to the reduction gear- The reduction gearing is arranged to drive a pair of shafts and 37, which drive what are termed force rollers 38 and 38 respectively. These rollers are so disposed as to grip a wire 4| between the surfaces of their peripheries and drive the wire into a cavity die 42. This die and the mechanism for holding it in position to receive the wire is indicated as a whole by the reference numeral 33 and includes various adjustment devices for angular, lateral and vertical adjustment of the die which adjustment mechanism is clearly described in the above mentioned Patent No. 1,670,499 covering the mandrelless coil-winding machine.

This patent also clearly shows the die and the manner in which the wire issues in the form of a helical coil which in the present drawing is indicated by the numeral 34 (see Fig. 6). The

wire 4! for making the primary coil may be led from a spool 4| over a drum 42', in a bight and thence to the force rollers 38 and 38'. The drum 42 serves to actuate mechanism for cutting the coiled-coil into sections containing uniform lengths of wire.

The coil 34, which is the primary coil in the present instance, is lead through a guide passage 35 formed in a sleeve 36' which sleeve constitutes a spindle for a pinion 37, the spindle being journaled in an adjustable standard or bracket 31'. The pinion 36 is in mesh with a similar pinion 39 rotatable on a stud 4| secured in the bracket 37 which is provided with a foot piece 42" slidable in a guide support 43. For the purpose of moving the bracket 31 to adjust it in ahorizontal plane the foot piece 42 is provided with a threaded aperture 44 to receive a screw 45'the free end of which is provided with ahead 45 which abuts against a plate 41 so that a rotation of the head 45, which causes a rotation of the screw, will serve to move the bracket 31". When the helically wound filament or primary coil 34 travels through the passage 35 it rotates at relatively high speed about the longitudinal axis of the helix, this rotation being caused by the mandrelless operation of coiling.

For thepurpose of winding the primary coil into a secondary coil the sleeve 36 is provided with a. nose piece 48 and it is at this point that the operation of forming the secondary coil is performed.

As set forth in the method disclosed in the above mentioned Patent No. 2,013,432, it has been found that, if the turns of a helically wound coil of a given pitch are spread apart at predetermined points on the circumference of the coil, the helically wound coil will take the form of another helix. The present construction shows mechanism operating on a primary coil to move a member or spreader between successive turns of a primary coil.

When operating upon a helically wound coil, as it issues from a coil-winding machine and is thus rotating, it is necessary to provide means so coordinated and timed as to perform the spreading operation after each revolution of the primary coil so that the point at which the spreading takes place is always the same with respect to the circumference of the primary coil.

It has been found practical to perform the spreading operation by means of a knife-like member 49 which may be carried on a holder 5| of disk 25. The disk is rotatable on the shaft 23 driven by the motor M. The disk 25 is provided with a toothed segment 52 disposed in mesh with the pinion 39. The segment and pinion 39 are so proportioned and arranged that a movement of the segment will cause one complete rotation of this pinion. This will, obviously, cause a complete rotation of the pinion 31 and sleeve 36 which is rotatable therewith.

Extending from the nose piece 48 of the sleeve is a guide finger or stub guide 53 and, as the coil 34 issues from the sleeve it passes adjacent to and travels over an abutting surface 54 (see Fig. 8) on the guide 53. At this point the separator member or blade 49 is moved between the turns of the coil 34.

The blade 49, carried by the disk 25, is so timed in its operation that with each complete rotation of the primary coil about its axis the blade enters between two adjacent turns. This operation is progressive and as each successive turn advances, the blade passes between it and the next succeeding turn. With the arrangement shown the points of separation for the turnswill be in a straight line ,along the length of the primary coil since the blade 49 is timed to perform its spreading operation after each complete rotation of the primary coil about its longitudinal axis.

As the blade operates to separate the turns, the primary coil begins to form the secondary coil 55 which winds itself about and is carried by the guide or finger 53. This holds the secondary coil to form and prevents distortion due to any whipping action that may occur since, as above explained, the primary and consequently the secondary coil will rotate. As the secondary coil leaves the guide finger it moves through a guide tube 55 and across ,a blade 55 which, in conjunction with the edge of the tube 55 serves to sever the coil. Means for cutting the secondary coil into sections will be later described.

The guide finger 53 is, as above described, carried on the sleeve 36 and, therefore, rotates with the primary coil so that the secondary coil as it is made, will move with the primary coil and be held under control and fed into the guide tube 55.

With the present construction the primary coil winding operation is terminated when the blade 49 moves between the turns of the primary coil.

As above pointed out, the present machine is so constructed that with each engagement of the blade 49 and the primary coil a termination of the coil-winding operation is effected. This is accomplished by means of the single toothed disk 26 which causes a rotary movement of the gear wheel 21. The'shaft 2| which, as above described, is adjustably coupled to shaft I8, driven by pulley I1, and shaft 23 which carries the disk 25, translates motion to the holder I driving it continuously. By reason of the segment 52, however, the pinion 31 which carries the sleeve 36' is only rotated one complete revolution for each revolution of the disk. The rate of rotation of the sleeve is in timed relation to the rotation of the primary coil-34 about its longitudinal axis.

Owing to the relative movement between the single tooth disk 26 and the gear-wheel 27, only one complete coil winding operation is performed for each complete rotation of the disk 25 and the segment 52 thus rotates the sleeve 36 with the coil, and the blade 49 moves between adjacent turns of the wire ,at the end of the rotary movement of the primary coil or after each coil-winding operation. Thus, with the present mechanism, when the turns of the coil are separated,

' the coil-winding operation has stopped temr on the sleeve 36'.

porarily. The operation of making the primary coil may, however, be made continuous by providing a plurality of the blades 49 operating in timed relation to the rate of rectilinear movement of the primary coil.

It will be appreciated that the operation of the blade 49 must be timed accurately and in the present construction the disk 25 is, therefore, ad-

justable to move the segment 52 toward or away from the pinion 89 thus changing the pitch diameter and varying the degree of movement of the p-inions and consequently the guide finger 53 on the nose piece 48.

Means for adjustably supporting the disk 25 may comprise an arm 59 having one end pivoted at 5|. The other end provides a bearing 52' for the shaft 23. Laterally projecting from the bearing and integral therewith is a short arm 53' pivotally connected with one end of an adjustor rod 54. The rod 54' extends through and threadedly engages an aperture in an upright 55 and a hand wheel 56' is provided to draw the rod 54 to adjust the portion of the disk relative to the pinion 39. A lock nut 51' makes it possible to secure the rod in an adjusted position. The nose piece 36 is also slightly adjustable and is held against relative movement by a set screw 56 extending through a slot 5'! on a flange The sleeve, and consequently the arbor, is thus adjustable with respect to the path of movement of the blade 49 and by such adjustments the pitch of the secondary coil may be varied. 9 1

As the secondary coil issues from the guide 55 it is severed into sections of uniform lengths. I The machines for performing the severing operation 1 include the knife 69 in conjunction with the end 89' which serves as a bed knife.

This cutter or knife 69 is mounted on a plunger 65 reciprocal vertically in a guide plate 66. The lower end 61 of the plunger is disposed in contact with a set screw 68 at one end 69 of a lever member II balanced in a bearing I2.

The opposite end I3 of the lever is provided with a latch I4. This latch consists of a rocker member I5 pivoted at 16 and has an arm I1 normally held against a stop I8 by a spring I9; thus an engagement with one side of an arm BI of the rocker member I5 will serve to depress the arm I3 7 for example, the force rollers.

by reason of the stop 18 and rock the lever II while an engagement of the opposite end 8| of the member I5 will permit the said member to move without actuating the lever I I.

It will, therefore, be evident that by engaging the rocker arm I5 the lever II may be actuated to lift the plunger 65 and cause the knife 69 to move across the bed knife 69' to sever the secondary coil. A spring 82 and a collar 83 on the plunger operate to normally return the plunger to its lowered position. It will be appreciated that the present cutter must sever the coil as it moves'from the guide tube 55. Therefore, the action of the cutter must be positive and instantaneous.

The measuring drum 42' is provided with a gear wheel 84 (see Fig. 1) in mesh with a change gear or idler 85 which is disposed in mesh with a gear 86 secured to a shaft 81. The shaft 8'! is provided with the cam member 88 having a cam surface 88' and a drop portion 88". This cam engages a trigger member 89 journaled at 9I in a bearing 92.

One end 93 of the trigger is connected by a spring 94 to a projection 95. The spring 94 operates to hold a lug 96 at the opposite end of the trigger member normally engaged with the cam surface 88'. On the trigger member, opposite to the lug 96 is provided a lug 9I engageable with a lug 98 at the free end of a latch-piece 99, the latch-piece being pivoted at I9I on a slide plate I99. A spring I92 is provided to normally urge the latch-piece against a stop I93 so as to be in position to engage the lug 91 of the trigger 89.

The latch-piece 99 is mounted on andis movable with the plate I99 which is slidable in guides I94 and I 95. It will be understood that the trigger 99 which is mounted on the bearing 92 integrally with the guides is stationary, the said guides being secured to the framework of the machine. A spring I96 is secured to a pin I9'I projecting from the slide plate and a tongue I98 secured to the guide I94 normally urges the plate in the direction of the arrow X so that when the plate is free to move an impact member I99, ad-

justably secured by set screw I I I to the plate I99,

will engage the end of the rocker member 15 and actuate the lever II to operate the cutter. The tongue I98 is stationary, being secured to the framework of the machine.

Means are provided to extend or stretch the spring I96 at which time the trigger 89 engages the latch-piece 99 and holds the slide plate in operative position so that when the trigger 89 is released the potential energy of the spring will cause the impact member I99 to actuate the lever II. The above mentioned means for actuating the slide plate I99 so as to expand the spring may comprise mechanism in the form of a rotatable head I I2 constituting what maybe termed trigger setting mechanism.

The head H2 is mounted on a suitable shaft and is continuously driven by a gear wheel connected with a motor (not shown) which drives the other operating elements of the machine, as The head H2 is provided with a projecting pin II3 disposed eccentric to the axis of rotation of the head. The pin is so arranged as to enter a notch H4 in the slide plate I99. Thus as the pin rotates with the head the slide plate will be carried in the direction of the arrow Y so as to expand the spring and permit the trigger member 89 to engage the latchpiece 99 and hold the plate ready for actuation.

It is necessary, however, to provide means for retracting the pin from its operative path after;

it leaves the notch I I4 and for holding the same retracted to permit a number of revolutions of the head II2. This is accomplished by making the pin I I3 slidable in a suitable aperture in the head and providing a suitable spring (not shown) for normally urging the pin outwardly and by having a cam face II5 extending from the slide plate in the path of rotation of the pin I I3 so that as the pin leaves the notch II l it will engage a bevel face of the cam and move inwardly until an annular notch provided on the pin is engaged by one arm I I8 of a bell crank member I I6 pivoted on a pin in a slot in the head. An opposite arm of the bell crank is disposed in tensional relation with a spring I I? so that when an arm I I8 -of the bell crank member drops into the notch H4 of the plate, an arm II9 will slightly project from the slot in the head thus leaving an end of the arm II9 exposed for engagement with a contact pin which projects from the slide plate I00.

The contact pin is so positioned that when the slide plate is advanced, that is, when the spring I02 is expanded the said pin will be removed from the path of movement of the projecting end of the arm II9 but after the spring I06 is contracted and the slide plate has returned, the pin will engagethe end of the arm I I9 causing the bell crank member to .be actuated and the arm IIB lifted from the notch in the pin I I3. Whereupon, the spring will be free to act and project the pin so that the same will again enter the notch and repeat the operation of moving the slide plate I00 .and expanding the spring.

.gear wheel 85 transmits motion to the cam 88 and the cam is thus rotated to actuate the trigger 89. As shown, the trigger is in position just about to drop and release the latch-piece 98. When this occurs the slide plate I00 will, under the action of the spring I06, bepulled in the direction of the arrow X causing an actuation of the lever 'II which results in an operation of the cutter to sever a coiled section.

The plate I will then be in .its retracted position and the contact pin will be in positionto engage the projecting end of the bell crank member to permit the pin to be projected so that upon a rotation of the head II2, the pin will enter the notch and return the slide plate I00 to an operative position. As the slide plate returns the impact member will pass the arm since the latter is free to move in one direction. As the plate I00 reaches its final returned position the latch .98 will again engage the trigger 89 ;to hold the cutter in operation while the ,cam rotates.

By reason of the present construction a section of coiled wire is severed upon each rotation of the cam 88 and inasmuch as-the action occurs instantaneous, the cam continues to rotate and the driving mechanism of the machine has ample time to set the trigger before the drop portion of the cam returnsfor another coil cutting operation.

When the mechanism described in the foregoing is employed, the tension on the filament isareduced to ;a minimum which makes it possible to avoid detrimental stretching of the wire and variations due to wire slippage.

As above mentioned a coiled-coilmay be made from aprimary coil fed from a spool in which case. the .mandrelless coil-winding mechanism may be dispensed with. It has, however, been found of great advantage from a production and quality standpoint to use the mechanism for winding a secondary coil in combination with a mandrelless coil-winding machine, as shown.

In operation a filament or other wire 4| is lead from a source of supply around drum 42' and between the force rollers 38 and 38. These rollers drive the wire into a cavity die 42 from which it issues in the form of a helical primary coil 34. This coil then moves through the passage 35' in the sleeve 36 and as it emerges from the end of the sleeve the separator member 49 moves between two turns of the coil and separates them. As above described the movement of the separator member and the formation of the primary coil are so timed that as each primary turn is completed the separator member. operates and in accordance with the mechanism provided the operation of making the primary coil is momentarily terminated. As the separator member moves away preparatory to another separating operation, the primary coil-winding mechanism operates to bring the next turns into position for separation. The point of separation of the coils thus remains the same or along a straight line parallel to the longitudinal axis of the turns and at the same circumferential point.

As the separator member operates the primary is converted into the secondary coil 50 and is I carried by the finger 53 which rotates at the same speed of rotation as the primary coil thus preventing the secondary coil from whipping about and serving to lead it into the tubular guide 55. The operation of making a coiled-coil may be continued to make a coil of this character of an indefinite length. It is desirable, however, to provide severing means such as above described to cut the coiled-coil into definite lengths which cutting is accomplished by the timed operation of the knife 60.

The present machine makes it possible to automatically perform a continuous coil-winding operation to produce a coiled-coil particularly for use as a light source for incandescent electric lamps. The method may, however, be used for winding what may be termed a double helical spring for general use as for example in connection with machines or instruments where it is desirable to obtain extreme flexibility and a fixed degree of tension.

Although a preferred embodiment of the invention is shown and described herein, it is to be understood that modifications may be made therein without departing from the spirit and scope of the invention as set forth in the appended claims.

What is claimed is:

1. A machine of the class described comprising means for forming a primary helical coil, a coil turn separator member, and means operating in timed relative movement to the coil being formed for moving said member substantially transverse to the longitudinal axis between successive turns of said primary coil to separate the turns and produce a secondary helical coil.

2. A machine of the class described comprising means for forming a primary helical coil, a coil turn separator member, and means operating in timed relative movement to the coil being formed for moving said member between successive turns of said primary coil to separate the turns and produce a secondary helical coil.

3. A machine of the class described comprising means for supporting a primary coil, means movable between the turns of said coil, means for causing a relative movement between said coil and said means, and means for operating said second mentioned means to engage the turns of said primary coil to produce a secondary coil. D

i 4. A machine of the class described comprising means for winding a wire into a primary helical coil, means for guiding said primary coil through a predetermined path, means movable between-the turns of said coil, and means for operating said movable means to space adjacent turns of the coil upon a movement of said primary coil a distance equal to the distance between the centers of adjacent turns and a guide finger to receive the primary coil after the spacing operation.

5. A machine of the class described comprising means for supporting a primary helical coil, means for moving a member between the turns of said coil and means for causing a relative movement between said respective means to cause said last named means to successively separate the turns of said primary coil to form a secondary coil.

6. A machine of the class described comprising means for supporting a primary helical coil, means for moving a member between the turns of said coil, means for causing a relative movement between said respective means to cause said last named means to successively separate the turns of said primary coil to form a secondary coil, and means for supporting the turns of said secondary coil.

'7. A machine of the class described comprising means for supporting a primary helical coil, means for moving a member between the turns of said coil, means for causing a relative movement between said respective means to cause said last named means to successively separate the turns of said primary coil to form a secondary coil, and a finger cooperating with said second mentioned means to receive said secondary coil.

8. A machine of the class described comprising means for moving a primary helical coil through a given path and a member movable transverse to the longitudinal axis of and between the successive turns of said coil for spreading the turns thereof to produce a secondary coil.

9. A machine of the class described comprising means for moving the primary helical coil through a given path, coil turn separating means and means for moving said second mentioned means transverse to the longitudinal axis of and between the successive turns of said coil to separate said turns and produce a secondary coil.

10. A machine of the class described comprising means for winding a wire into a primary helical coil, means for guiding said primary coil through a predetermined path, coil turn separator means movable between successive turns of said coil and means for moving said separator means into operative relation with said coil to space adjacent turns thereof upon a movement of said coil a given distance along said path.

11. A machine of the class described comprising means for winding a wire into a primary helical coil, means for guiding said primary coil through a predetermined path, coil turn separator means movable across said path between successive turns of said coil, and means for moving said separator means to space adjacent turns of the coil upon a movement of said primary coil a distance equal to the distance between the centers of the adjacent turns of said coil.

we 12. A machine of the class described comprising a coil winding die, means for moving said wire into said die to form a primary coil and means movable transverse to the longitudinal axis of and between the successive turns of said coil for separating the turns thereof to produce a secondary coil. 1

13. A machine of the class described comprising a coil winding die, means for moving a wire into said die to form a primary helical coil and means movable transverse to the longitudinal axis of and between the successive turns of the coil for individually separating the turns of the primary, coil to produce a secondary coil.

14. A machine of the class described comprising a coil winding die, means for moving a wire into said die to form a primary helical coil, means movable transverse to the longitudinal axis of and between the'successive turns of said coil, said second mentioned means operating in timed relation with said first named means for individually separating the turns of said primary coil to produce a secondary coil and means for supporting said secondary coil.

15. Amachine of the class described comprising means for supporting a primary coil, means movable between the turns of said coil, means for causing a relative movement between said coil and said means, means for operating said second mentioned means to engage the turns of said primary coil to produce a secondary coil and means for cutting said secondary coil into sections of predetermined lengths.

16. A machine of the class described comprising means for moving a primary helical coil through ,a given path, a member movable transverse to the longitudinal axis of and between the successive turns of said coil for spreading the turns thereof, means for operating said member, and coil severing'means operating in timed relation with the movement of said primary coil for severing said secondary coil into predetermined lengths.

17. A machine of the class described comprising means formoving a primary helical coil through a given path, a member for spreading the turns of said coil, means for moving said member transverse to the longitudinal axis of and between the successive turns of said coil, and coil severing means operating in timed relation with the movement of said primary coil for severing said secondary coil into predetermined lengths.

18., A machine of the class described comprising means for winding a wire into a primary helical coil, means for guiding said primary coil through a predetermined path, coil turn separator means movable across said path between the successive turns of said coil, means for moving saidseparatormeans into operative relation with said coil to space adjacent turns thereof upon a movement of said coil a given distance along said path and means operating in timed relation with said first mentioned means for cutting said secondary coil into sections of predetermined lengths.

i 19. Acmachine'for winding a primary helical wire into an air core secondary helix comprising means for exerting a force in the space between successive turns of the primary helix to separate the turns thereof to produce a secondary coil and means for actuating said means.

20. A machine of the class described comprising means for supporting a primary helical coil, coil turn separator means movable between successive turns of said coil, means for moving said primary coil, and means for moving said separator means into operative relation with said coil to space adjacent turns thereof upon a movement of said coil a given distance.

21 A- machine of the class described comprising means for supporting a primary helical coil, coil turn separator means movable between successive turns of said coil, means for moving said primary coil in the direction of its longitudinal axis, and means for moving said separator means to space adjacent turns of said coil upon a movement of said coil a distance equal to the distance between the'centers of the adjacent turns of said coil;

22. A machine of the class described comprising means for supporting a primary helical coil, andmeans movable transverse to the longitudinal axis of and between the successive turns of said coil' for separating the turns thereof to produce a secondary coil.

23. A machine of the class described comprising means for supporting a primary helical coil, and a blade movable transverse to the longitudinal axis of and between the successive turns of the coil for individually separating the turns of the primary coil to produce a secondary coil'.

24. A machine of the classdescribed comprising means for causing an endwise movement of a primary helical coil, means movable transverse to the longitudinal axis of and between the successive turns of said coil, said second mentioned means operating in timed relation with said first named means for individually separating the turns of said primary coil to produce a secondary coil, and means for supporting said secondary coil.

25. A machine of the class described comprising means for supporting a primary helical coil, means for exerting a force in the space between successive turns of said primary coil to separate the turns thereof to produce a secondary coil.

26. A machine of the class described comprising means'for' supporting a primary helical coil, means-for exerting a force inthe space between successive turns of said primary coil to separate said turns a predetermined distance to produce a secondary coil of a given pitch, and means for varying the degree of said force to separate said turns a different distance to produce a secondary coilof a different pitch.

27. A machine of the class described comprising means for supporting a primary helical coil, a coil turn separator member, means for moving said member successively between the turns of said coil to space said turns and produce a secondary coil of a given pitch, and means for varying the depth of movement of said member to produce a secondary coil of a diiferent pitch.

28'. Amachine of the class described comprisi'ng' means for supporting a primary helical coil, ablade, means for moving said blade successively between the turns of said coil to space said turns and produce a secondary coil of a given pitch,' and means for changing the degree of movement of said blade toward said coil to change the degree of spacing of said turns to vary the pitch of said secondary coil.

29. A machine of the class described comprising a means for supporting a primary helical coil, a member movable transverse to the longitudinal axis of said coil for spreading the turns thereof a given distance to produce a secondary helical coil of a given pitch, and means for changing the relative positions of said member and said primary coil to spread the turns of the primary coil a different distance to produce a secondary coil of a different pitch.

30. A machine of the class described comprising means for supporting a primary coil, a blade, means for actuating said blade, means for causing a timed relative movement between said blade and said coil to cause the blade to pass between successive turns of the coil to separate the turns and produce a secondary coil, and means for changing the relative positions of said coil and blade to vary the depth of movement of said blade between said turns to vary the pitch of said secondary coil.

31. A machine of the class described comprising means for supporting a primary coil, a blade, means for actuating said blade, means for causing a timed relative movement between said blade and said coil to cause the blade to pass between successive turns of the coil to separate the turns and produce a secondary coil, and means for varying the depth of movement of said blade as it passes between said turns to vary the pitch of the secondary coil.

32. A machine of the class described comprising means for supporting a primary helical coil, a rotatable blade, and means for moving said blade through an arcuate path successively between the turns of said coil to space the turns and produce a secondary coil.

33. A machine of the class described comprising means for supporting a primary helical coil, a rotatable blade, means for moving said blade through an arcuate path successively between the turns of said coil to space the turns and produce a secondary coil, and means for supporting the newly formed turns of said secondary coil.

34. A machine of the class described comprising means for supporting a primary helical coil, a member having a knife edge, and means for moving said member through an arcuate path successively between the turns of said coil to space the turns and produce a secondary coil.

35. A machine of the class described comprising means for supporting a primary helical coil, a member having a knife edge, means for moving said member through an arcuate path successively between the turns of said coil to space the turns and produce a secondary coil, and means for varying the radius of said arcuate path to vary the pitch of said secondary coil.

36. A machine of the class described comprising means for supporting a primary helical coil, means movable between the successive turns of said coil for separating the turns thereof to produce a secondary coil, and a supporting mandrel to receive the newly formed turns of the secondary coil.

STEN WADSTEN.

DISCLAIMER 2,056,028.-Sten Wadsten, Bloomfield, N. J. MACHINE FOR MAKING Comm-Cons.

Patent dated September 29, 1936. Disclaimer filed July 9, 1941, by the assignee, Westinghouse Electric cfi Manufacturing Oompany. Hereby enters this disclaimer to claims 3, 4, 5, 6,7, 8, 9, 10, 11, 12, 13, 14, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, and 36.

[Ofioz'al Gazette July 29, 1.941.]

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