USRE18576E

USRE18576E - f sedgley r

Info

Publication number: USRE18576E
Authority: US
Publication date: 1932-08-23

Description

Aug. 23, 1932. R. F. SEDGLEY mm'aon OF AND APPARATUS FOR MAKING COILS Original Filed Feb. 6, 1926 4 Sheets-Sheet 2 01V LINE,3-G FIG. I.

INVENTOR.

A TTORNEY Aug. 23, 1932. SEDGLEY Re. 18,576

METHOD OF AND APPARATUS FOR MAKING COILS Original Filed Feb. 6, 1926 4 Sheets-Sheet 5 ON LINE. 6 -6 5.3 j/ 04 LINE '9-9. FIG. 1.

ATTORNEY.

Aug. 23, 1932. R. F. SEDGLEY METHOD OF AND APPARATUS FOR MAKING COILS Original Filed Feb. 6. 1926 4 Sheets-Sheet 4 I N VEN TOR.

Reiuued Aug. 23, 1932 Re,

UNITED STATES PATENT OFFICE REGINALD I. SEDGLE'Y, OF PHILADELPHIA, PENNSYLVANIA METHOD OF AND APPARATUS FOR MAKING COILS Original No. 1,777,900, dated October 7, 1830, Serial No. 86,480, filed February 8, 1920. Application for reissue filed February 1, 1932. Serial No. 580,280.

The object of this invention is to devise Figure 8 is a section on line 8-8 of Figa novel method of and apparatus for making ure 9. coils, wherein a continuous travel is impart- Figure 9 is a sectional plan view of the .ed to a wire and durin such continuous travel package feeding mechanism, the section being a the wire is subjected rst to a forming operataken on line 99 of Figure 1.

tion and thereafter to a coilin operation. Figure 10 isatop plan view of themachine. The resultant product is cut into desired Figure 11 is a plan view ofthe wire to lengths and fed to containers which are pro- Show the manner in which it is flattened. gressively moved into receiving position. Figure 12 is a top plan view of the cutting The coil in a container is subjected to a tanmechanism. gling operation, and the container can then be Figure 13 is a perspective view of the finclosed and is ready for shipment. lshed pr uct.

With the above and other objects in view igure 14 is a section on line 14-14 of which will hereinafter more clearly appear, igure 1- 3 my invention comprehends a novel method Similar numerals of reference indicate es of and apparatus for making coils. c rresponding parts.

It further comprehends novel feeding erring to the drawings mechanism, novel cutting mechanism, novel 1 designates the frame of the machine, the means for packaging the cut coils, and novel nstr c ion and arrangement of which may means for tangling the coils. a y Wldely in practice. 70

Other novel features of construction and The machine is driven by a motor 2, which advantage will hereinafter more clearly apis preferably an electric motor carried by the pear in the detailed description and the apframe and having a pulley 3 around which d d claim passes a belt 4, which also passes around a For the purpose of illustrating the invenpulley 5 mounted on a shaft 6 suitably jour- 75 tion,Ihave shown in the accompanying drawnalled in the frame. The shaft 6 has fixed ings a typical embodiment of it, which, in to it a gear 7 which meshes with a gear 8 practice, will give reliable and satisfactory fixed to a shaft 9 journalled in the frame. results. It is, however, to be understood that The shaft 9 carries a roll 10, and a roll 11 is this embodiment is typical only, and that the in rolling contact with the roll 10. The roll 30 various instrumentalities of which my in- 11 is mounted on ball bearing journals 12 vention consists can be variously arranged h i dj ti screws 13 t l t th and organized, and that the invention is not, pressura Th 11 d 11 are f i therefore, l i t0 the P arrangement rolls for the material 14 which may be .in and organization of these instrumentahties the form of a Wire This wire is Wound on 85 as 11.9mm Sgt l spools 15 carried by stationary spindles 16 FIO'UIG 1 IS a side elevation of an apparatus for ranking coils embody-mg my invention {mg i ii s i dii d zi c g idiovided for each spool 40 in 1 5 11 slde elemtlon of parts Shown consisting (81f an arm 128 loosely mozimged {)11 1:, 0

in 19 an s rin s 0 are rovi e wiic Flgure 3 1S a Section on hm 3 3 of Fig t end to move t he aims 18 int contact with a uri libmre 4 is a Se on line H of Fig portion of the spools. The wire 14 passes um f to the forming rolls 10 and 11 through a Figure 5 is an end elevation illustrating a The 511115 p of head the portion of the gearing. forming mechanism is made in sectlon to Figure 6 is a side elevation of the construcprovide a slot or side opening 22 so that the tion seen in Figure 5. wire 14 can be moved through such slot into 5 Figure 7 is a top plan view of a portion engagement with the forming rolls. The

of the package feeding mechanism. Wire, after passing between the forming rolls 10 and 11, is in the form of a thin ribbon or band as shown at 23, see Figure 11.

The formed wires next pass around a stationary grooved rod 24, see Figure 10, carried by a slotted arm 25 adjustably secured to a boss on the frame by a suitable fastening device passing through the slot in the arm. The passing of the wire around the rod 24 over a bar or blade 86 causes it to assume the form of a coil as soon as it leaves the take up rolls 27 and 28. The diameter of the coil depends on the position of the rod 24 relatively to the blade 86.

The feed roll is a driving roll and is mounted on ball hearings on a shaft 29 which carries a gear 30, see Figure 10, which meshes with a gear 31, see Figure 3, fixed to a shaft 32 journalled on the frame and having a gear 33, see Figure 3, which is driven by a gear 34 on the shaft 6. This shaft 6 has a hand wheel 35.

The feed roll 28 has its outer portion of hard rubber, while the roll 27 is of metal.

The side of the head of the frame of the feed rolls is slotted as at 36, see Figure 1, so

that the formed band can be brought into enagement with the take up rolls 27 and 28. he upper roll 28 has its journals adjustable by ad usting screws 37 The wire, in the form of a continuous helix or coil, is fed into packages or boxes 38, passing down the guide chute 39 which has a separate channel for each coil.

The coils are now cut to form predetermined lengths by cutting mechanism which is accurately timed.

The cutting mechanism has a guide frame 40 carried by the frame, see Figure 12, to the front of which is fixed a stationary blade 41.

40 A blade 42 is slidably mounted in the guide frame and has a cutting edge 43.

This cutting blade 42 has connected with it, one end of a link 43, the opposite end of which is connected to a lever 44 fulcrumed at 45 on the frame and controlled by a lever. The lower end of the lever 46 has guided in it for limited vertical movement a plunger 47 which is moved downwardly by a spring 88 and has its bottom rounded. This lever 46 50 is fulcrumed on the machine frame and the plunger 87 is in the path of a stud 47 adjustably secured to a. slide bar 48 by means of a bolt 49, see Figure 9. This bar 48 controls both the cutting mechanism and the package feeding mechanism, and is, in turn, controlled by a timing mechanism which will be hereinafter described.

The frame has connected with it a support 50, see Figures 1 and 8, having a shoulder 51 on its upper face between which and a guide ring 52 is mounted a revoluble ring 53 having in its outer periphery circumferentially spaced recesses 54. The ring 53 has upwardly extending pins 55 which pass through a package carrying plate 56 and serve to position a spring band 57 which is bent to form a series of clrcumferentially spaced pockets 58 which receive the packages 38 which are in the form of cartons or boxes.

The guide ring 52 has a spider, the hub of which is recessed to receive the hollow stud 59 which extends upwardly through the plate 56. The plate 56 has in its periphery circumferentially spaced notches or recesses 60.

The slide bar 48 is cut out, as at 61, see Figure 9, to receive a pawl 62 having teeth 63. This pawl 62 is pivoted to the rod 48 at 64 and a spring 65 tends to move the pawl towards the revoluble ring 53, which latter is partially revolved when the slide rod 48 is moved forwardly. The forward end of the pawl 62 is curved or bent inwardly to form a cam face.

A spring actuated detent pawl 66 is ada ted to enter the recesses 54 and prevents t e rotation of the ring 53 in a reverse direction. The forward end. of the slide rod 48 travels in a guide 67, and is provided with an ad ustable stop 68 adapted to enter a recess 60 and serve as a stop member for the plate 56. The slide bar 48 is guided on the frame, and has adjustably fixed to it, by fastening devices 69, a stop 70 which limits the forward travel of the slide bar. A bar 71 is fixed to the bar 48 and has connected to it a desired number of springs 7 2 which are connected to the frame so that the tendency of the s rings 18 to advance the bar 48. This bar 48 as fixed to it a contact member 73, see Fi res 1 and 2, which is in the form of an ang e and is in the path of a pin 74 carried by a worm wheel 75. This worm wheel 75 is driven by a worm 76, the shaft of which is provided with a gear 77 meshing with a gear 78 on a shaft 79 journalled on the machine frame. The shaft 79 has fixed to it a gear 80, see Figures 1 and 3, which meshes with a gear 82 on a shaft 83. The gear 83 meshes with the gear 7 on the driving shaft 6. The gear 7 as shown in Figure 3 is a double gear which can be moved into or out of mesh with the gear 8 or with a gear 84 on the shaft 9. This gear 84 meshes with a gear 85 suitably mounte and meshing with the gear 82.

If the continuous length of coil fed into a carton is to be used as an abrasive or polishin material it is advantageous to tangle it, and automatically accomplish this result by compressed air injected into a coil containing carton. The compressed air may come from any desired source of supply, which, preferably, is produced by the machine itself.

The air compressor may be in the form of a standard type of a single piston reciprocating compressor 89 driven from the gear 75 by 12 a gear 90. A conduit 91 leads from the compression chamber of the compressor through the hollow stud 59 to a plurality of diver ing nozzles 92, the discharge ends of whic are above a pair of filled cartons. The conduit 9-1 has a four way valve 93 of conventional construction controlled by an arm 94 on the slide bar 48. The finished product in a tangled condition is shown at 95, see Figure 13.

The operation will now be apparent to those skilled in this art and is as follows Assuming first that it is desired to form coils from a wireor strip of material having any desired contour in cross-section and that it is to be subjected to a forming or flattenin operation before being coiled, the wire, woun on spools 15, are placed on the spindles 16.

The machine is adapted to carry a desired number of spools so that a plurality of individual coils are simultaneously formed from strips of material, and, for the purpose of illustration, I have shown a plurality of spools. The wire 14 from each spool is threaded through the guide 21 and is then passed through the slot 22, see Figure 1, so that the two wires will be received between the flattening rolls and 11. For this pur pose, the hand wheel is actuated to bring the wire between the flattening rolls. The wire is then drawn forwardl and passed under the rod 24 which is pre erabl provided with annular guide grooves. T e wire is then drawn upwardly over the plate 86 and is threaded through the slot 36 of the frame into contact with the take up rolls 27 and 28. The packages or cartons 38 are placed in pockets 58, the flaps being in their open position.

The belt 4 passes around the pulley 3 and also around the pulley 5 fixed to the drive shaft 6, so that the drive shaft 6 is now revolving. I

Assuming that the parts are in the position shown in Figure 1, the gear 7, fixed to the drive shaft 6, meshes with the gear 8 fixed to the shaft 9 so that the lower flattening roll 10 will be driven, and, as the upper flattening roll is in contact with the roll 10, the second roll will be driven, thereby forming or flattening the wire or strip of material. At the same time, the feed rolls 27 and 28 are driven, and, since the gear 34 on the driving shaft 6 meshes with the gear 33 on the shaft 32, the latter shaft is driven together with its gear 1 31, see Figure 1. The gear 31 meshes with the gear 30, see Figure 10, on the shaft 29 of the lower feed roll 27. The upper feed roll 28 has its contact portion of less density or is made of hard rubber, and is in rolling contact with the lower feed roll 27, so that the two feed rolls 27 and 28 will be driven, thereby effecting the forward feed of the wire.

The operator now starts the motor 2, and, as the wire 14 passes from the flattening rolls 10 and 11, it is in the form of a thin band or ribbon 23, as will be understood from F igure 11.

This flat or other form of band passes beneath the rod 24 which is carried by a bracket 25 which is adjustably supported. The pur pose of this ad'ustment is to enable one to make coils of di erent diameters. The diameter of the coils depends on the angular relation of the blade 86 and the rod 24. It will be understood that the wire is under tension so that as it passes around the rod 24 and over the blade 86, coiling action is effected. It will be seen that the bracket 25 due to the slot and pin connection 26 is capable of a universal adjustment, so that the machine can be adjusted to make coils of different diameters.

Assuming that the machine is continuously runnin the strips in the form of a coil ass down t e guide chute 39, which is provided with a plurality of channels so that each separate coil is discharged into a separate carton 38.

I provide means for cuttin the coils into predetermined lengths or weights to be received in a carton 38, and for controlling the cutting mechanism I employ a timing mechanism.

In the operation just described, the timing is accomplished by the gear 82 which meshes with the gear 7 and also with the gear 80, which latter is mounted on the shaft 79, the shaft of which carries the gear 78.

This gear 7 8 drives the gear 77 and thereby the worm 76, thus revolving the worm wheel 75. The worm wheel 75 is provided with a pin 74 which travels in the path of a contact member 73 on the slide bar 48, and, assuming that the gear 75 is traveling in a clockwise direction, seeFigure 1, the pin 74 cooperating with the contact member 73 will cause the slide bar 48 to be moved rearwardly, thereby increasing the tension of the springs 72 until the pin 74 passes out of engagement with the contact member 73.

The slide bar 48 is moved forwardly by the springs 72, and the pin 47 carried by said bar strikes the plunger 87, see Figure 1, thus rocking the lever 46 of the cutting mechanism, see Figure 1, and actuating the lever 44, see Figure 12, to effect the forward cutting stroke of the movable knife 42, so that its cutting edge 43 will out the coiled bands 23. The edge 43 will cut the coiled bands 23. The forward movement ot the slide bar 48 also causes the step by step advance of the plate 56 which forms a table to support the cartons.

As the slide bar 48 moves forwardly the teeth 63 on the awl 64 enter the recesses 54 of the rotatable ring 53 and causes the latter to advance two steps so that the two boxes which have been filled will be moved out of filling position and the next two boxes or cartons will be brought into filling position.

The slide bar 48 is provided with a stop which limits the forward movement of the slide bar 48 and prevents any overrun of the plate or carton carrier 46.

The rearward movement of the plate 56 is prevented by the detent 66. When the slide bar 48 reaches the forward end of its forward movement, the stop 68 on the bar enters a notch or recess so that, during the filling of the cartons they will be accurately cs1- tioned beneath the channels in the guide c ute 39.

It will be apparent from the foregoing that all that the operator has to do is to see that the machine is su plied with s ools of material, and to keep the pockets 58 lled with cartons, and to remove the filled cartons, and the entire operation of the machine is automatic.

I provide means for effecting the tanglin of each length of coil which has been fe through a carton before the carton carrier 56 is advanced. This can be accomplished in any desired manner, but for purpose of illustration, I have shown the worm wheel meshing with a worm gear 90 which actuates an air compressor 89 of any conventional construction, thereby creating a source of compressed air. The conduit 91 leads from the compression channel of the compressor through the hollow stud 59 to the air nozzles 92 the discharge ends of which are positioned above the two cartons which have been filled, and the discharge ends of these nozzles are bent so that the air will be discharged into the cartons to cause a whirling action and thereby the entanglement of the different portions of the coils. As the carton carrier is advanced the nozzles close one side flap of the cartons with which they are cooperating.

The passage of the com ressed air to the nozzles is controlled by t e arm 94 on the slide bar 48, so that the valve 93 is given a quarter turn which efl'ects the opening and closing of the valve to cause a pull of compressed air to pass through each nozzle into its carton. The carton carrier 56 is now advanced, and the operator closes the packa e so that the carton is now in condition for s ipment.

It is advisable in a machine of this character to have the timing mechanism so adjusted that different weights or lengths of the material can be fed into the cartons, and, for this purpose, I rovide the idler 85, so that when the gear 5 is moved outwardly the timing will be done through the gear 7, gear 84, gear 85, gear 82 and gear which enables a. greater weight or a greater amount of material to be discharged into a carton.

- It will, of course, be apparent that it is within the scope of this invention to form coils from lengths of material without subjecting the material to a flattening operation. A flat sheet or band may be employed in lieu of a wire which is not in the form of a band. In such case, the pressure between the rolls 10 and 11 is reduced, and the material is fed in the same manner as already described, the only difierence being that the strip of materiel from which the coils are formed is not sub'ected to a flattening operation.

hen the slide bar 48 is moved rearwardly, the pin 47, causes the spring pressed plunger 47 to be moved upwardly without opleratmg the lever 46. The forward end of t e pawl 62 is in the form of a cam so that, when the slide bar 48 is moved rearwardly, the teeth 63 are cammed out of engagement with the rotatable rin 53 which operates the carton carrier 56. f the coils are tangled, the material 95 is adapted to be used for abrasive or olishin but, in case it is not desired to use it or an a rasive or polishin the tangling operationcan be dispensed. sive or olishing material or article is to be made, t e wire or band from which it is formed is preferably of a non-corrosive nature, and a material such as nickel steel wire may be used. It will be apparent from the foregoing that in accordance with this inven-. tion a metal strand is fed under tension and while it is under tension it is passed over a curling edge. The passing of the metal strand over the curling edge works one side of the metal so that the opposite side or surface is stretched. The results of this is that as soon as the tension is released the metal strand automatically assumes the form of a helical coil. This is formed into a flexible and resilient metallic bunch with the juxtaposed coils interlocking and tending to main tain the bunch formation.

If it is desired to form coil springs it will be apparent that the strip may be made of spring or other metal which may or ma not be subjected to a forming operation, an continuous lengths of coiled springs can be con tinuously and automatically formed.

The cutting mechanism is so arranged that a shear cut is made and the fastening devices which secure the fixed blade 41 in position also secure in position springs 96 which tend to move downwardly the mar 'nal edge portlon adjoining the cutting e ge so that the blades are self sharpening.

The driving means for the different sets of rolls is such that the driven take up roll is driven at a greater speed than that of the driven roll of the set of forming rolls. This serves as a take up roll for the wire or band which is being fed and compensates for any stretch of the material during the operation.

It will be apparent that my present inven' tion is also adapted to be employed for windmg the material on spools, in which case the wire or other material can pass directly from thzlalset of forming rolls to the seat of take up ro s.

If a take up roll becomes worn the operator can move the strip of material 23 to an adjoining groove on the rod 24 so that a fresh surface of the take up roll will cooperate with the strip.

For purpose of illustration, I have shown en an abra-' the forming rolls as arranged to roll a flat strip, but it is within the scope of my invention to have the strip which is formed by the forming rolls 10 and 11 of any desired contour in cross section, for example, the shape may be diamond shaped, oblong, or formed in such a manner that in cross section it will have any desired number of abrasive edges, and the contours in cross section which can be formed are too numerous to herein specifically mention. It will be apparent from the disclosure herein that by the term coiling operation" and means to effect the coiling of the strip of material that the action on the strip is such as to'impart to the strip an inherent tendency to curl when released from tension.

It will now be apparent that I have devised a new and useful method of an apparatus for making coils which embodies the features of advantage enumerated as desirable in the statement of the invention and the above description, and that while I have, in the present instance, shown and described a preferred embodiment thereof which will give, in practice, satisfactory and reliable results, it is to be understood that this embodiment is susceptible of modification in various particulars without departing from the spirit or scope of the invention or sacrificing any of its advantages.

Having thus described my invention what claim as new and desire to secure by Letters Patent, is:

1. The method of making coils consisting in continuously feeding astrip of material and during such feed subjecting it to a forming operation to vary its form in cross section, then to a coiling operation, and mechanically cutting off predetermined lengths of coils in timed relation with the forming and coiling operations.

2. The method of making coils which consist in continuously feeding a strip of material, and during such feeding subjecting it to a forming operation to vary its form in cross section and a coiling o eration, feeding cartons into receiving position, discharging the coil strip into cartons and severing the stri into predetermined lengths of coils after it has been fed into cartons.

3. The method of forming coils, which consists in coiling a strip of material, feedin it into a container, and then injecting fiui into said container to efl'ect the tanghng of the coil.

4. In a coil makin machine, means to feed a strip of material, means to coil the material, means to feed a container into position to receive the coiled material, and mechanically operated means to cut the coiled material into predetermined lengths.

5. In a coil making machine, means to feed a strip of material, means to coil the material, means to feed a container into position to receive the coiled material, means to cut the coiled material into predetermined lengths, and means to tangle the coiled material into a bunch.

6. In a coil making machine, means to feed a strip of material, means to form the strip to vary its contour in cross section, means to effeet the coiling of the formed strip and means mechanically operated in timed relation with the forming and coiling means to cut the coiled strips into predetermined lengths.

7. In a coil making machine, means to feed a strip of material, means to form the strip, means to effect the coiling of the formed strip, means to cut the coiled strips into predetermined lengths, means to feed container into position to receive the cut coils, and means to tangle the cut coils into bunches.

8. In a coil making machine, means to feed a strip of material, a member around which the strip passes, a blade to which the strip passes under tension from said member, and means to relatively adjust said member and blade to determine the diameter of the coil produced.

9. In a coil making machine, a set of rolls to receive the strip of material to be treated, coiling mechanism to which the strip passes, a second set of rolls to which the strip passes and having one of its rolls of less density than the other, and driving means for said sets.

10. In a coil making machine, a set of forming rolls, a set of take up rolls, coiling mechanism to which the material passes from said forming rolls and which passes from the coiling mechanism to said take up rolls, and actuating means for said rolls.

11. In a coil making machine means to feed a strip of material, means to efi'ect the coiling of the strip, cutting-off mechanism, adjustable timing mechanism to control said cuttin -oif mechanism, and actuating means for said feeding means and said mechanism.

12. In a coil making machine, a strip feeding mechanism, stri coiling mechanism, means to progressive y feed separate eontainers into position to receive the coiled strip, cutting off mechanism to sever the stri timing mechanism for said cutting off mec anism and said container feeding mechanism, and means co-operating with said mechanism and said means to effect the cyclical operation of the machine.

13. In a coil makin machine, a set of cooperating forming ro ls, means to drive one 0 said forming rolls, a set of take up rolls, coiling mechanism between said sets, and means to drive one of said take up rolls at a different speed from that of the driven forming roll. 1

14. In a strip treating machine, a set of 00- operating forming rolls, means to drive one 0 said forming rolls, a set of take up rolls, coiling mechanism between said sets of rolls and means to drive one of said take up rolls at a eater speed than the driven speed of said riven forming roll.

15. In a coiling machine a set of forming rolls means to drive one of said rolls, which frictlonally drives the other roll of the set, coiling mechanism to which the material being treated passes from said set, a set of take up rolls, each being of a difl'erent degree of hardness than the other and to which the material being treated passes from said coilin mechanism, and means to drive one-of said e up rolls and thereby cause it to drive the other take up roll.

16. In a coiling machine, spools for the material to be treated, tension means for said spools, a set of feedin rolls to which the material passes from sai spools, coiling mechanism to which the material passes from said feeding rolls, a second set of rolls to which the material passes from said coiling mechanism, means to eifect the drive of said sets of rolls, and means to intermittently cut the coiled material passing from said second set of rolls.

17. In a rolling machine, a frame having a roll carrying head with an upper and a lower cooperating roll and with the head open throughout its length at both sides to provide for the material bein treated being passed laterally through sai openmg'into engagement with the rolls, and means to revolve the rolls. I

18. In a rolling machine, a plurality of sets of upper and lower cooperating rolls a head for each set, each head having both sides open so that the material being rolled can be threaded into engagement with the rolls of each set, and actuating means for said rolls.

19. The method of making curled wire which comprises rolling wire to flatten it, maintaining the flattened wire while moving under tension, and causing the flattened wire while moving and under tension to pass over a curling edge which imparts to thewire an inherent tendency to curl.

20. The method of making curled wire which comprises passin wire continuously between rolls thereby attening the wire, feedin the flattened wire continuously between eed rolls whereby the flattened wire is maintained under tension, and causing the tensioned flattened wire, while maintained under tension and moving continuously, to pass over a curling edge thereby imparting to it an inherent tendency to curl.

21. The method of making curled wire which comprises flattening wire while moving continuously, imparting to the flattened wire, while moving continously, an inherent tendenc to curl, maintaining the flattened wire un er tension, thereby preventing curling thereof, and then relieving the wire of tension thereby permitting it to curl.

22. A machine for making curled wire comprising rolls operative to flatten wire, feed rolls operative to advance the flattened wire continuously and to maintain the flattened wire under tension, and means operative on the continuously advancing flattened 10 wire under tension to impart to it an inherent tendency to curl.

23. A machine for making curled wire comprising continuously revolvin rolls operative to flatten wire, a curling e ge, and means 7 for drawing the flattened wire over said curling edge and for maintaining the wire under tension.

24. A machine for making curledwirecomprising rolls ada ted to receive wire between 30 themand operative to flatten said wire, feed rolls adapted to receive the flattened wire between them and operative to advance said wire and to maintain it under tension, and means arranged to act on the tensioned wire to impart to it a tendency to curl.

25. A machine for making curled wire comprising a pair of wire flattening rolls, a pair of feed rolls adapted to draw the flattened wire between them, means for drivin said pairs of rolls at a relative speed whic will maintain the flattened wire under tension, and curling means arranged to act on the tensioned flattened wire.

26. A machine for makin curled wire comprising a wire. curling mem er, continuously running means for advancing the wire, means for maintaining the wire under tension while passing said curling member and for freeing it of tension after passing said curling member, and intermittently operative container-filling means for the tension-freed curled wire.

27. A machine for making curled wire com rising continuously running means for feeding and tensioning wire, means for imparting a curling tendency to the wire, means for filling the curled wire, freed of tension, into containers, and means governed by the feeding means for controlling the operation of the filling means.

28. The method of making a metal strand in the form of a helical coil, which consists in feeding a metal strand under tension, continuously working the metal at one side of the strand while it is under tension to stretch the opposite side of the strand thereby causing said strand when released from tension to assume the form of a helical coil.

29. The method of making a metal strand in the form of a helical coil, which consists in feeding a metal strand under tension, and, while it is under tension, passing it I over a curling edge to impart to it an inherent tendency to form a helical coil when released from tension, and releasing the strand thus treated from tension to permit it to assume the form of a helical coil.

30. A machine for making a metal strand in the form of a helical coil, comprising means no for feeding and tensioning a metal strand and means to stretch the metal at one side oi the strand while it is under tension to cause the metal strand when released from tension 6 to assume the form of a helical coil.

31. A machine for making a metal strand in the form of a helical coil, comprising means for feeding and tensioning a metal strand, and a curling edge over which said strand 10 is fed while under tension to cause the metal strand when released from tension to assume the form of a helical coil.

Philadelphia Pa., January 23, 1932.

REGINALD F. SEDGLEY. 15

DISCLAIMER Re. 18,576.Reginald F. Sedgley, Philadelphia, Pa. METHOD OF AND APPARATUS FOR MAKING CorLs. Patent dated August 23, 1932. Disclaimer filed January 31, 1935, by the patentee.

Hereby enters this disclaimer to claims 28 and 30 which read as follows:

28. The method of making a metal strand in the form of a helical coil, which consists in feeding a metal strand under tension, continuously working the metal at one side of the strand while it is under tension to stretch the opposite side of the strand thelreby causing said strand when released from tension to assume the form of a helical coi 30. A machine for making a metal strand in the form of a helical coil, comprising means for feeding and tensioning a metal strand, and means to stretch the metal at one side of the strand while it is under tension to cause the metal strand when released from tension to assume the form of a helical coil.

[Oflicial Gazette February 26, 1.936.]