US642339A - Wire-coiling machine. - Google Patents

Description

Patented Ian. 30, I900.

L. c. KBUMMEL. WIBE- GOILING MACHINE.

(Application filed Apr. 11, 1899.) (No Model.) 4 snooty-Sheet l.

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oooooooo Q i H! wi NITED STAT S PATENT W rricin.

LOUIS C. KRUMMEL, OF CHICAGO, ILLINOIS, ASSIGNORTO HIMSELF AND FRANK RUDOLPHI, OF SAME PLACE.

WIRE-COILING MAcHiN.

SPECIFICATION san part of Letters Patent No. 642,339, dated January 30, 1960. Application filed April 11, 1899. Serial No. 712,627. (No model.)

To all whom, it may cdhcern:

Be it known that I, LOUIS C. KRUMMEL, a citizen of the United States, residing at Chicago, in the county of Cook and'State of Illinois, have invented a certain new and useful Improvement in Tire-Coiling Machines, of which the following is a specification.

My invention relates to wire-Working machines involving coiling mechanism to which the wire is fed in a straightened condition and from which the wire is then delivered in the form of a continuous spiral spring which may be cut up and utilized for various purposes.

Prominent objects of my invention are to provide an improved device for coiling different diameters of spring without changing or substituting any of the various parts of the machine; to provide an'improved form 'of coiling mechanism which will enable the operator to vary or change the diameter of the coil without stopping the machine; to provide improved, simple, and efficient means whereby either an open or close wound spring may be coiled at will; to provide improved means for insuring a thorough straightening of the wire before it enters the coiling mechanism; to provide an improved and simplified arrangment whereby either a right or left hand coil may be wound, as desired; to provide an improved arrangement which will permit the coiling of different sizes or gages of wire without changing or substituting the various parts of the feed and forming mechanisms; to provide an improved and highlyefficient coiling-machine involving feed and forming mechanisms and in which the Wire is fed to a rotary mandrel or spindle having the same circumferential speed as the feedrolls; to provide a construction in which all parts are readily removable for the purpose of repair; to insure an accurate and uniform coiling of the wire whether open or close wound; to provide certain novel arrangements and details of construction tending to secure a greater efiiciency, and to generally simplify and improve the construction and operation of machines of this class.

To the attainment of the foregoing and other useful ends my invention contemplates a novel and effective arrangement of improved feed and forming mechanisms where by the former Will force or feed the wire to the latter, with the result that the Wire will be bent or coiled into a spiral spring. The feed mechanism is preferablyadjustable with reference to variations in the size of the wire and also with reference to variations in the coiling. After leaving the feed mechanism the wire first passes through a guiding-sleeve and is then received and pressed tightly against the periphery of a rotary mandrel or spindle by a grooved supporting-roll. From between the supporting-roll and the mandrel the wire is then forced against the periphery of a grooved forming-roll and by the latter finally bent or deflected about the mandrel in the form of a continuous spiral coil or spring. The supporting and forming rolls are not power-driven, but are simply mounted so as to rotate by reason of the continuous movement of the wire and are in such way adapted to prevent friction between the wire and the forming mechanism. The rotation of the mandre1,which preferably has the same circumferential speed as the feed-rolls, is also instrumental in reducing friction and insures a smooth and unrestricted passage of the wire through the forming mechanism. Both rolls are made adjustable with reference to variations in the size of the wire or in the diameter of the coil, the position of the forming-roll relative to the mandrel determining the diameter of the coil and the supporting-roll being adjusted or positioned according to the particular size or gage of wire employed. WVhile the spiral coil is, as stated, formed about the mandrel or spindle, the size of the latter in no way determines the size or diameter of the coil, as the latter may, for instance, be four or five times the diameter of the mandrel. The wire is driven or pushed into the forming mechanism by the feed mechanism, and the supporting-roll and mandrel or spindle simply cooperate to firmly hold the wire while the forming-roll is performing its function of bending and coiling the wire into the desired spiral form. By such arrange ment any diameter of spring may be coiled without changing or substituting any part or portion of the machine, as by making the mandrel or spindle of a minimum size or diameter various diameters of spring may be coiled by simply adjusting or positioning the forming-roll according to the particular result desired, and, moreover, such variation in the coiling is secured without stopping or interrupting the operation of the machine. A spacing finger or tool is provided, whereby the coil may be changed instantly from a close to an open wound spring, and as the spacing-finger and supporting-roll are interchangeable the spring may also be readily changed from a right to a left handed coil, or vice versa. The wire before entering between the feed-rolls is thoroughly straightened by means of a number of small rolls arranged to bear on opposite sides of the wire, and as a matter of further improvement I provide an improved arrangement by which the straightening device may be quickly rendered operative orinoperative without resorting to tools.

Other features constituting matters of further improvement are hereinafter more fully set forth and described.

In the accompanying drawings, Figure 1 is a front elevation of a wire-coiling machine constructed in accordance with my invention. Fig. 2 is a Vertical longitudinal section of the same, taken on a line through the center of the mandrel or spindle. Fig. 3 is a like section taken on a line through the center of the feed-rolls, the housings for the feed-roll shaft being shown partly in section and part-1y in elevation. Fig. 4 is a rear elevation of the machine with the pulley-wheels removed. Figs. 5 and 6 are detail views of the mandrel and spacing-finger, showing the manner in which the latter deflects the wire and produces an open-wound coil. Fig. 7 is a detail section on line 00 m in Fig. 1. Fig. 8 is an end view of the adjustable trough employed to support the coiled wire. Fig. 9 is a section on line y 'y in Fig. 1. Fig. 9 is a View of one of the crank-pins involved in the construction of the straightening device. Fig. 10 is a section on line z in Fig. 1. Fig. 10 is a section on line 00 an in Fig. 9. Fig. 11 is a diagrammatic View illustrating the manner in which the two rolls and the mandrel or spindle cooperate to coil the wire. Fig. 12 is a detail view illustrating the mannerin which the guide-sleeve is mounted. Fig. 13 is a modification of the forming mechanism.

A wire-coiling machine constructed in accordance with my invention comprises, preferably, an upright post or standard A of suitable height and strength and adapted at its upper end to afiord a support for a casting B. It will be observed that the said casting consists of a couple of oppositely-arranged walls Z) and Z) and a base portion b the latter being seated and bolted or otherwise secured upon the top of the standard A. The two oppositely-arranged walls I) and b are constructed and adapted to afford supports and bearings for the shafts and various devices which constitute the feed and forming mechanisms. The said feed mechanism consists,

preferably, of a couple of feed-rolls O and D,

mounted, respectively, upon the shafts E and F and provided with peripheral grooves to enable the rolls to feed or force the wire forward in the direction indicated by the arrow. The shafts E and F are gear-connected at their rear ends by means of gears e and fand are arranged to extend through and have their hearings in long sleeves or housings G and H. A vertical adjustment of the feed mechanism is seen red by arranging the housings in vertical guideways and b the latter being formed, respectively, in the upright and oppositely-arranged walls I) and b and by supporting the lower housing upon the upper ends of adjusting- screws 1 and 2. A couple of similar screws 3 and 4 are arranged to bear upon the upperhousing, and the rear ends of the latter are connected by a hinge I. The two adjustingscrews 1 and 2 are connected for simultaneous adjustment by a sprocket-chain 5, and the lower end of the screw 1 is provided with a hand-wheel 6. By first loosening the screws 3 and t the entire feed mechanism may then be adjusted vertically by rotating the hand-wheel 6, and by then readj usting the screws 3 and 4 the said mechanism may be securely held in the desired position; also, the arrangement permits a relative shift or adjustment on the part of the two feed-rolls, as by connecting the rear ends of the housings in the manner described the feed-rolls may be separated slightly without cramping the gears e andf. Such separation or relative shifting of the rolls is preferably and conveniently secured by interposing a spring? between the forward ends of the two housings, whereby when the screw 3 is loosened the forward end of the housing G and roll 0 will be then tilted upward and away from the roll D. This permits the feeding or forward movement of the wire to be stopped without stopping the machine, as by loosening the screw or feed-controller 3 the roll 0 will be elevated slightly by the action of the spring 7, and with the rolls thus separated their rotation will of course cease to effect a feeding of the wire. Each roll is preferably provided with a couple of differentsized grooves, such as c c and d d, whereby any gage of wire may within certain limits be operated upon without changing the feedrolls, for with the two oppositely-arranged grooves c and (Z a certain number of small sizes of wire may be fed through the rolls, while with the two oppositelyarranged grooves c and cl a certain number of relatively large sizes-may be passed between the rolls. 'The end portions of the housings G and H are preferably provided with lateral recesses or notches g and h, and the flat surfaces thus provided at the ends of the housings serve to prevent the latter from turning or rotating with the shafts E and F, as the sides of the guideways extend and fit within the recesses, as shown in Fig. 3. The screws 3 and 4 are preferably screwed-into and eX- tended downwardly through a couple of removable plates 22 and I), while the adj ustingscrews 1 and 2 are screwed into and extended upwardly through the metal of the castin g B. The construction and arrangement of the feed mechanism is simple and efficient and permits the ready removal of all parts for the purpose of repair and alteration.

The forming mechanism, to which the wire is fed by the feed mechanism and by which the wire is coiled into the form of a continuous spiral spring, comprises, preferably, a mandrel or spindle J, a supporting-roll K, a forming-roll L, and a spacing tool or finger M. A vertically-adj ustable trough N is also preferably provided for receiving and supporting the coil. After leaving the feed-rolls the wire 2 is first forced through a guidesleeve 0, which latter is preferably mounted upon a lug or extension h, formed on the forward end of the housing H, and is then received and supported by the grooved supporting-roll K. From the latter the wire moves forward and passes beneath the mandrel or spindle J and is then finally received and deflected upward by the forming-roll L.

In Fig. 11 is illustrated the manner in which the mandrel and two rolls cooperate to coil the wire, and from this view it will be seen that the supporting-roll serves to hold the wire tightly against the periphery of the mandrel and that the wire then striking the periphery of the forming-roll is deflected upward, and thereby given a permanent bend or curve. The wire is fed continuously by the feed-rolls and in this way bent as fast as it issues from between the mandrel and supporting-roll. The end of the wire describes the circle shown in dotted lines, and in practice it is customary in making a closewound coil to bend the end of the wire slightly outward, so as to start the spiral coil outward along the mandrel and supportingtrough, or, in other words, the end of the wire is bent outwardly for the purpose of permitting it to curve over and come down on the outside of the supporting-roll, whereas, if it were not so bent, it would simply curve over and come down on top, or perhaps inside, of the wire just issuing from the guidesleeve. The supporting-roll is preferably arranged to bear upwardly against the wire at a point between the guide-sleeve and mandrel, as in such position it serves to prevent the bend or curvature of the wire from extending back along the Wire farther than the latters point of contact with the mandrel that is to say, the supporting-roll supports the wire against downward bend or bulge and serves to confine the bend or curvature of the wire between the latters point of contact with the mandrel and forming-roll. The mandrel or spindle J may be stationary and rigidly secured to the body of the machine; but as a matter of further improvement the mandrel is arranged to rotate with the same circumferential speed as the feed-rolls. To

this end the said mandrel or spindle is 6X1 tended rearwardly through suitable hearings in the upright walls I) and b and provided at its rear end with the belt-pulleys j and j;

'driven and that the arrangement of gears is such that the mandrel and upper feedroll rotate in the same direction and have, as previously stated, the same circumferential speed. By thus rotating the mandrel the passage of the wire through the forming mechanism is greatly facilitated, as by so doing the wire is forced through the forming mechanism with comparatively little friction and without danger of buckling or jamming. The supporting and forming rolls may be mounted or supported in any suitable manner; but as a preferred and advantageous arrangement the two rolls are adjustably mounted and arranged to permit the formation of coils of various diameters without changing any portion of the forming mechanism, and the construction isalso such that the rolls may be adjusted to form either a close or open wound spring, as may be desired. To these ends the forming-roll is preferably journaled in the end of a cylindric shank or stock Z and the latter clamped within a split collar Z. The said split collar is provided with a laterally-extending stud Z and also with a lug Z The shank or stock Z, which, it will be observed, is somewhat longer than the collar Z, is provided at its outer end with a segr mental fiange Z having a segmental slot Z", the latter being formed on a curve struck from the axis of the said shank or stock Z. (See Fig. 7.) An adjusting-screw Z screwed into the lug Z and arranged to extend outwardly through the slot Z is also provided, it being observed that the outer end of said screw is provided with a hand-wheel Z and also that the hub of the latter and the collar Z serve to lock the shank and screw against relative longitudinal shift. The stud Z is adapted to fit the bore of a split socket b formed integral with the wall 1) and provided withaclamping-boltb. Bylooseningthebolt b the shank or stock Z may be given either a rotary or an axial adjustment, the first being secured by turning or partially rotating the shank to the desired position and the second being obtained by rotating the hand-wheel Z also, the entire device may be tilted to any desired angle by loosening the bolt b. The supporting-roll K is mounted similarly to the forming-roll and like the latter is journaled at the end of a shank or stock 70, clamped within the bore of a split collar 70.

The latter, like the collar l, is provided with a lateral stud k and a lug and the outer end of the shank or stock is formed with a slotted flange similar in all respects to the segmental flange Z. A hand-wheel k mounted upon an adjusting-screw 70 is provided for adjusting the shank longitudinally, and the stud 70 is clamped within the bore of a split socket D formed, like the socket b integral with the casting and provided with a clamping-bolt b Thus mounted the two rolls are easily adjusted to any desired positionas, for instance, should it be desired to form a coil smaller in diameter than the one shown the forming-roll may for such purpose be moved or shifted to a point nearer the mandrel, so as to give the wire a sharper or more pronounced bend or curve, for it will be observed at this juncture that the size of the coil is regulated entirely by the relative positions of the mandrel and forming-roll and that while the wire is coiled about the mandrel or spindle the sizeof the latter in no way determines the diameter or character of the spiral coil. A larger gage of wire may be coiled by slightly lowering the supportingroll and by then adjusting the forming-roll in accordance with the particular diameter of spring desired, and in this connection it will also be seen that the supporting-roll is readily adjustable along the wire between the mandrel and guide-sleeve-that is to say, the roll is preferably mounted in such manner as to be capable of adjustment in a direction parallel with the line of feed.

An open-wound spring, or, in other words, a spring having its coils or convolutions some distance apart, may be formed by slightly turning or partially rotating the shanks 7c and Z within their respective sockets or collars, so as to give the rolls a slight angular adj ustment, and thereby bend or deflect the wire outwardly, as well as upwardly and over the mandrel; but as a matter of further and special improvement I provide the aforesaid improved spacing finger or tool M. In Figs. 1 and 2 such finger or tool is shown in an inoperative position; but in Figs. 5 and 6, which best illustrate this portion of my invention, the said tool or finger is shown in a lowered or operative position. The said tool or finger preferably consists of a short rod supported in a vertical position directly above the mandrel and having its lower end-portion fiattened, as at m. As a means of supporting, the tool or finger is clamped and held within the bore of a longitudinally-split socket-piece m, the latter having a stud m which is in turn clamped within a split socket I1 formed integral with the casting B. Figs. 5 and 6,

which are respect-ivelya plan and side elevation of the mandrel and tool or finger, (the latter being shown in horizontal section in Fig. 5,) illustrate the said tool or finger as being adjusted to a position to permit its flattened lower end portion to intercept and defleet the wire outwardly as it curves upwardly and over the mandrel from the periphery of the forming-roll. In Fig. 5 the end of the wire is shown as just striking the flat surface m of the tool or finger, and as a result of such interception the wire will be forced outwardly and the coils or convolutions thereby formed with intervening spaces, as shown in dotted lines in this figure and in full lines in Fig. 6. Ordinarily a coil of this character may be satisfactorily produced by properly adjusting the rolls; but for certain varieties of work I find that the improved spacing-finger is pref-v erable and that it produces a coil in which the turns or convolutions are more evenly and accurately spaced. Also the manner in which the finger or tool is mounted permits it to be readily and quickly adjusted, so as to vary the intervening spaces, as by adjusting the stud m longitudinally within the socket 12 or by simply turning the finger slightly in the socket m the position of the lower end of the finger may be varied sufficiently to vary the deflection of thewire, and consequently the distance between the convolutions of the coil.

The making of a left-hand coil involves a readjustment of the feed and forming mechanisms and also a rearrangement of the gearing which connects the mandrel with the feed-rolls. First, the feed-rolls are elevated slightly, so as to permit the wire to be fed over instead of under the mandrel and the supporting-roll and spacing-finger then interchanged and the forming-roll adjusted according to the diameter of coil desired. Next, the idler 9 is removed from the gear-plate P and the latter then swung or adjusted so as to permit the pinion 8 to mesh with the gear 10, it being observed that while the said gearplate is arranged to swing about the rear end of the mandrel the boss 19, formed on the gear-plate, permits the latter to be supported directly from the casting and, in fact, as before stated, to afford a suitable bearing for the rear end of the said mandrel or spindle. Also it will be seen that the said gear-plate is provided with a curved slot 19 and that a stud-bolt p projecting through the slot and provided with a nut, permits the locking of said plate in either of the two positions. The mandrel or spindle is now rotated in an opposite direction, which, it will be observed, is in the same direction as the lower feedroll. The supporting-trough is then lowered somewhat to receive the coil, which is now formed about an axis below instead of above the mandrel and which is now characterized by a left-hand instead of a right-hand wind. In this Way, thereforethat is to say, by making the feed and forming mechanisms relatively adjustable transversely to the line of feed--I provide a machine capable of coiling either right or left hand coils.

As previously stated, the feed-rolls are preferably provided with a plurality of grooves, and as it is highly desirable that the particular set of grooves in use be exactly in line with the forming mechanism provision is made whereby the rolls K and L and the spacing-finger M may be adjusted bodily in a direction parallel with the axis of the mandrel. To this end the inner side of the wall or upright portion 1) is provided with lugs Z9 12 and 6 (see Figs. 2 and 4,) and each of the studs k Z and m is bored and internally threaded to receive an adj usting-screw Q. The unthreaded portion of each adj usting-screw is extended through and journaled in an adjacent lug, and each screw is provided with a couple of fixed collars q and q. With this arrangement the said studs 15 Z and m may be adjusted in and out of their sockets by simply rotating the screws Q, and by such adjustment the rolls and finger may be conveniently brought into line with any particular set of grooves on the feed-rolls. The guide-sleeve O is also preferably adjustable in the same direction and for the same purpose, (see Fig. 12;) but in this case the adjustment is secured by first loosening the set-screw 0 and by then simply shifting the sleeve one way or the other by hand, though it is obvious that an adjusting device similar to those just described may be employed to do this also, if so desired. Preferably the guide-sleeve is removably held by a split clamping-piece 0, whereby the sleeve may be removed and replaced by one having a bore corresponding either to a larger or smaller gage of wire.

The trough N, which is adapted to receive and support the coil during its formation, may be supported for vertical adjustment in any suitable manner, but is preferably provided with a downwardly-extending rod or stem n, having an adjustable connection with an arm n, projecting from the standard A, it being understood that portions of the said arm and rod are shown as broken away for convenience of illustration.

Referring now to Figs. 1, 9, and 10, the improved device for straightening the wire prior to its passage between the feed-rolls comprises two or more sets of adj ustablc straightening-rolls R and S. The two sets are preferably arranged at right angles to each other, the set of rolls B being arranged to bear ,on top and bottom of the wire, While the rolls S are arranged to bear upon either side of the wire, and as the two sets are alike in all respects a description of one will suffice for both. The set of straightening-rolls R comprises the peripherally'grooved rolls r, arranged to bear upon the under side of the wire, and the similarly-grooved rolls r, arranged to bear down upon the top of the wire. The rolls 7" are mounted upon vertically-adjustable blocks 0, and the rolls 7* are mounted upon similarly-adjustable blocks r Each block is provided with a stud-bolt r which extends through a slot 1' in the wall of the holder or casting r, and each of said bolts is provided with a nut 0, which permits the block to be tightly clamped or secured to the tween the blocks r and 1 said holder. (See Fig. 10.) The blocks r are arranged to rest upon the upper ends of adj listing-screws r while similar adjustingscrews 1" are arranged to bear down upon the upper ends of blocks r By referring to Fig. 1 it will be seen that while the adjustingscrews r are simply screwed into and extended upward through a flange r on the holder the adj listing-screws r are screwed into and carried by a vertically-adjustable and horizontally-arranged bar or block '1'. As a simple and efiective device for adj usting the said bar or block the same is preferably supported by a couple of eccentricorcrank pins r (see Figs. 9, 9, 10, and 10%) arranged to extend through the ends of the bar and into the holder r. The outer ends of the pins are preferably provided with handlevers r ,-(see Figs. 1 and 9,) and a synchronous rotation of the two eccentric-pins is obtained by connecting the hand-levers with a rod or bar 1. Each pin, it will be observed, consists of relatively long and short portions which are eccentric to each other, and the pins thus formed serve and operate as small cranks, and while the relatively-short portion of each pin is free to turn in the holder 4" its relatively-long portion is free to turn in the bar or block 7'. With this construction and arrangement the rolls 0" may be adjusted to the proper height to support the wire, and by then swinging the hand-levers into the position shown in Fig. 1 the rolls 1* may be brought to bear uponthe upper side of the wire and all vertical kinks or bends in the latter thereby removed. The horizontally-arranged set of rolls S serves to remove the horizontal kinks or bends from the wire, and the latter after being thus drawn through the two sets of rolls will pass to the feedrolls and forming mechanism in a thoroughlystraightened condition. The bar or block 7" thus mounted for vertical shift or adjustment may be said to serve as a sort of movable abutment or clamping-jaw for bringing the upper rolls to bear upon the wire, and when adjusted to the position shown in Fig. 1 the said bar is effectually locked against upward movement by reason of the two centers or axes of each pin r being broughtinto line vertically, or, in other words, the two pins when in this position may be said to be on dead-center, and hence nothing but a movement of the hand-levers r will permit the rolls r to rise from the wire. An adjustment of the rolls with reference to different gages of wire is obtained by rotating the screws r and T the nuts 1 being, of course, first loosened to permit a relative shift be A release of the rolls r from downward. pressure is secured by swinging the hand-levers in the direction indicated by the arrow, such movement of the levers serving to partially rotate the eccentric-pins r and to thereby raise or elevate the bar or block 1", the latter, together with the eccentrics or cranks and the two connected hand-levers, constituting a sort of parallel movement for simultaneously shifting the rolls. A straighteningdevice thus constructed is quickly and easily operated, the eccentric arrangement permitting a quick opening and shutting of the rolls, so to speak, and allowing the device to be instantly rendered operative or inoperative without the use of wrenches, sore w-drivers, or other tools. It is obvious, however, that one or both of the eccentric-pins may be provided with a handwheel in lieu of a lever and that a simultaneous rotation of the two pins could then be seen red by means of a sprocket-chain or other similar connection. Also it is obvious that various devices may be employed in place of the eccen tric-pins.

\Vith further reference to the forming mechanism I find that in making small springs the mandrel may be dispensed with, and in Fig. 13 I have therefore shown a modified construction of forming mechanism particularly adapted for coiling wire into springs of comparatively small diameters. In this figu re it will be observed that the forming mechanism consists simply of three small rolls arranged to successively intercept and deflect or bend the wire into a spiral coil and that this arrangement involves only the removal of the mandrel and the provision of a third forming-roll, which latter is preferably arranged at apoint substantially above the axis of the coil, and, furthermore, this arrangement enables me to of course dispense with a large portion of the gearing at the rear of the machine and to ihereby provide an eX- ceedingly-simple as well as highly-efficient machine. The rolls of this arrangement may, like those of Fig. 1, be mounted for adjustment transversely to the line of feed, so as to permit the winding of either right or left handcoils, and this relative transverse adjustment of the feed and forming means can be accomplished in any suitable or desired manner.

What I claim as my invention is- 1. In awire-coiling machine, and in combination with a rotary mandrel, a supportingroll arranged to press the wire against the said mandrel and rotating about an axis which is normally parallel with the axis of the mandrel, said supporting-roll being angularly adjustable so as to permit its axis to be swung obliquely or placed at an angle to the axis of the mandrel, substantially as and for the purpose set forth.

2. In a wire-working machine, the combination of a parallel movement, a plurality of independently-ad j ustable straightening-rolls 3. In a wire-working machine, the combi-- nation of a parallel movement, a plurality of straightening-rolls,whichare slidably mounted and which have suitable connection with the said parallel movement, and a hand-lever for operating said parallel movement and thereby forcing the said rolls against the wire.

a. A machine for coiling both right and left handed coils, comprising feed and forming mechanisms which are adjustable relatively and transversely to the line of feed.

5. The combination of adjustable feed mechanism and means for driving the same; forming mechanism arranged in operative relation with the said feed mechanism and consisting of a rotary mandrel or spindle, a supporting-roll arranged to press the wire against the mandrel and which is adjustable along the wire between the mandrel and feed mechanism, and an adjustable forming-roll arranged to bend or deflect the wire about the mandrel in the form of a spiral coil; means for rotating the mandrel or spindle; and adjusting devices adapted and operative to adjust the rolls relatively to the mandrel, and also relatively to each other.

6 In a wire-coiling machine, the combination of feed-rolls having a plurality of feedgrooves, forming mechanism comprising rolls which are arranged in operative relation with the feed rolls, and a guide sleeve intermediate the feed-rolls and forming mechanism; the said rolls and guide-sleeve being adjustable horizontally and transversely to the line of feed for the purpose of bringing them into line with any particular set of grooves on the feed-rolls, so as to permit different gages of wire to be used.

7. In a wire-coiling machine, and in combination with suit-able coiling mechanism, a spacing finger or tool adapted and arranged to be placed in the path of the wire for the purpose of deflecting the latter and thereby producing an open-wound coil; and the said spacing finger or tool being rotatablymounted, substantially as described, whereby the distance between the convolutions of the coil may be varied at will by twisting or turning the stem of the finger in its socket.

8. In a wire-coiling machine, the combination of feed-rolls having a plurality of feedgrooves, and forming mechanism comprising rolls which are arranged in operative relation with said feed-rolls and which are adjustable horizontally and transversely to the line of feed for the purpose of bringing them into line with any particular set of grooves on the feed-rolls.

9. In a wire-working machine, and in combination with suitable forming mechanism, a pair of feed-rolls mounted upon shafts which are iuclosed in housings G and H, the latter being hinged together at their rear ends.

10. In a wire-coiling machine, the combination of power-driven feed mechanism, and formingmechanism arranged in operative relation with the feed mechanism and adjustable transversely to the line of feed for the purpose of winding both right and left handed coils.

11. A wire-coiling machine comprising adjustable feed mechanism and means for driving the same; adjustable forming mechanism arranged in operative relation with the said adjustable feed mechanism and a pivotallysupported guide-sleeve which is arranged intermediate of the feed and forming mechanisms, and which is also adjustable horizontally and transversely to the line of feed, substantially as and for the purpose described.

12. A wire-coiling machine comprising feed mechanism consisting of a pair of suitablydriven feed-rolls, forming mechanism involv ing a rotary mandrel or spindle having the same circumferential speed as the feed-rolls, and means for rotating the mandrel and feedrolls in the manner stated.

13. A wire-coiling machine comprising suitable feed mechanism, forming mechanism involving a rotary mandrel or spindle having a circumferential speed the same as the speed of the wire, and driving mechanism connected and arranged to impart to the said mandrel and wire the similarity of movement stated.

14. A wire-coiling machine comprising suit able coiling mechanism; and a spacing finger or tool M, removably and rotatably supported by a socket-piece m, and having its lower end adapted, substantially in the manner shown and described, to be placed in the path of the wire for the purpose of deflecting the latter and thereby producing an open-wound coil.

15. A wire-coiling machine comprising suitable feed-rolls having a plurality of feedgrooves, a mandrel or spindle, a supportingroll and forming-roll; the said supporting and forming rolls being adjustable horizontally and transversely to the line of feed so as to permit them to be brought into line with any particular set of grooves on the feed-rolls, substantially as and for the purpose set forth.

16. In a wire-working machine, a straightening device comprising a plurality of straightening-rolls, and a plurality of eccentric or crank pins suitably connected to form a parallel movement for adjusting the rolls.

17. In a wire-working machine, a straightening device comprising a plurality of independently-ad j ustable straighteni n g-rolls,and a plurality of eccentrics or cranks which are suitably connected to form a parallel movement for shifting the rolls.

18. In a wire-working machine, a straightening device comprising a' plurality of straightening-rolls, and a pair of eccentrics or cranks which are suitably connected and provided with a pair of connected levers, the same constituting a parallel movement for shifting the said rolls.

19. In awire-working machine, a straightening device comprising two opposing or oppositely-arranged sets of straightening-rolls, the members of each set being independently adjustable and a parallel movement for shifting one set of the rolls, substantially as and for the purpose set forth.

the wire between the mandrel and guide:

sleeve.

21. In a machine for coiling wire, the combination of feed mechanism and means for driving the same; forming mechanism arranged in operative relation with said feed mechanism, and consisting of a mandrel or spindle, a forming-roll and a supporting-roll which is shiftable from one side of the mandrel to the other; and one or more adjusting devices adapted and operative to adjust the said rolls according to the diameter of coil desired.

22. In a wire-working machine, the combination of feed mechanism and means for driving the same; forming mechanism arranged in operative relation with said feed mechanism, and comprising a supporting-roll which is shiftable from one side of the Wire to the other, so as to permit the coiling of either a right or left hand coil, and one or more adjusting devices adapted and operative to adjust the said forming mechanism according to the diameter ofcoil desired.

23. In a wire-coiling machine, the combination of feed mechanism and means for driving the same; forming mechanism arranged in operative relation with said feed mechanism, and consisting of a rotary mandrel, a supporting-roll which is shiftable from one side of the mandrel to the other, and a forming-roll; means for rotating the said mandrel or spindle; and adjusting devices adapted and operative to adjust the said rolls relatively to the said mandrel.

2A. In a wire-coiling machine, the combination of the feed-rolls, the guide-sleeve, the mandrel or spindle, a forming-roll, and a supporting-roll arranged to bear upon the wire at a point between the said mandrel or spindle and the guide-sleeve, the said supportingroll being shiftable from one side of the wire to the other for the purpose set forth.

25. In a wire-coiling machine, and in combination with power-driven feed mechanism, forming mechanism comprising a mandrel and supporting and forming rolls; the said rolls being adapted and arranged to cooperate in bending the wire about the mandrel in the form of a spiral coil, said rolls being nonpower-driven or simply mounted to rotate by reason of the movement of the wire, and the said supporting-roll being shiftable from one side of the wire to the other for the purpose set forth.

26. In a wire-coiling machine, and in combination with coiling mechanism, a spacing finger or tool adapted and arranged to be placed within the path of the wire for the purpose of deflecting the latter and thereby producing an open-wound coil, and the said finger being shiftable from one side of the wire to the other for the purpose of permitting the coiling of either a right or left hand coil.

27. In a wire-coiling machine, a straightening device consisting of a plurality of rolls arranged to bearat opposite sides upon the wire, means for adjusting the rolls according to the particular gage of wire in use, rotatable eccentric or crank pins for simultaneously causing the rolls to bear upon the wire, and one or more hand-levers for operating the said pins and thereby causing a quick opening and shutting of the rolls independently of the said adjusting means.

28. In a wire-coiling machine, a straightenin g device consisting of a plurality of rolls arranged to bear at opposite sides upon the wire and mounted upon adjustable blocks; adjusting-screws for adjusting the said blocks, and thereby the rolls, according to the particular gage of wire in use; rotatable eccentric or crank pins for simultaneously causing the rolls to bear against the wire, and one or more hand-levers for operating the said pins and thereby causing a quick opening and closing of the rolls independently of the said adjusting-screws.

29. In a wire-coiling machine, a straightening device consisting of a plurality of rolls arranged to hear at opposite sides upon the wire,

and mounted upon independentlyadj ustable blocks; adj Listing-screws for adjusting the said blocks, and thereby the rolls, according to the particular gage of wire in use; a bar or block carried by rotatable eccentric or crank pins journaled in the body portion of the machine, and through which extend two or more of the said adj usting-screws; one or more hand-levers for rotating said pins, and whereby the rolls may be simultaneously caused to bear against the wire.

30. In a wire-coiling machine, a straightem ing device consisting of a plurality of rolls arranged to bear against the wire at opposite sides of the latter and mounted upon ad j ustable blocks; adjusting-screws for adjusting said blocks, and thereby the rolls, according to the particular gage of wire in use; a block or bar mounted upon rotatable pins journaled in the body-casting, and through which said block or bar two or more of the said adjusting-screws are extended; each pin consisting of two portions which are eccentric to each other, and the pins thus formed serving and operating as cranks; a hand-lever secured to each pin, and means for connecting the said levers for the purpose of securing a simultaneous rotation of the pins; the device thus constructed being adapted to effect a quick opening and closing of the rolls, and the latter being locked in an operative condition, in

l the manner described, by the eccentricity of the pins.

31. In a wire-coiling machine, a straightening device consisting of a plurality of grooved rolls arranged to bear against the wire at 0pposite sides of the latter and mounted upon adjustable blocks; each of said blocks being provided with a bolt which extends through a slot in the body-casting, and each bolt being provided with a nut; adjustable screws for adjusting the said blocks in accordance with the particular gage of wire in use; a device for simultaneously causing the rolls to bear against the wire, and comprising a plurality of rotatable crank-pins; and hand-levers for rotating the said pins.

32. In a wire-coiling machine, the combination of feed mechanism, means for guiding the wire as it issues from the said feed mechanism and forming mechanism arranged in operative relation with the said feed mechanism and adapted to receive and deflect or bend the wire into a spiral coil, said forming mechanism comprising a plurality of rolls which are shiftable or adjustable transversely to the line of feed for the purpose of permitting the coiling of either a right or left hand coil.

33. In a wire-coiling machine, and in combination with suitable feed mechanism and means for guiding the wire, forming mechanism arranged in operative relation with the said feed mechanism and comprising a supporting-roll which is adjustable along the wire and shiftable from one side of the Wire to the other, and a forming-roll; the said rolls being adapted and arranged to successively intercept and cooperate in deflecting or bending the wire into a spiral form.

3st. In a wire-coiling machine, the combination of the feed-rolls, the guide sleeve arranged to receive and guide the wire as it issues from between the said feed-rolls, forming mechanism arranged to receive the wire from the said guide-sleeve, the said forming mechanism comprising a plurality of rolls which cooperate in deflecting or bending the wire into a spiral form, and one or more of said rolls being shiftable or adjustable transversely to the line of feed for the purpose of permitting the coiling of either a right or left hand coil.

35. In a wire-coiling machine, and in commechanism comprising a plurality of rolls, a guide-sleeve for the wire arranged to extend from said feed-rolls to said forming mechanism and having its ends tapered or reduced to permit it to extend between the feed-rolls and close to the forming mechanism.

36. The combination of feed mechanism, and a supporting-roll and a spacer which are interchangeable for the purpose described.

37. In a wire-coilin g machine, the combination of an adjustable feed mechanism and l means for driving the same; an adjustable and removable guide-sleeve arranged to rebination with a pair of feed-rolls and formingceive the wire from the feed mechanism;

forming mechanism comprising a mandrel, a forming-roll, and a supporting-roll arranged to bear upon the wire at a point between the mandrel and guide-sleeve means for adj usting the feed mechanism according to the gage of wire in use, and one or more adjusting devices adapted and operative to adjust the forming mechanism for a like purpose.

38. In a wire-coiling machine, the combination of feed mechanism comprising a pair of suitably-constructed feed-rolls,formin g mechanism comprising a rotary mandrel or spindle, a supporting-roll arranged to press the wire against the periphery of said mandrel, and a'forming-roll for bending or deflecting the wire about the mandrel in the form of a spiral coil; and means for rotating the said mandrel or spindle and feed-rolls with th same circumferential speed.

39. In a wire-coiling machine, a feed mechanism consisting of a pair of suitably-mounted feed-rolls; forming mechanism comprising a rotary mandrel, a supporting-roll arranged to keep the wire in contact with the said mandrel, and a forming-roll adapted and arranged to bend the wire about the mandrel in the form of a spiral coil; and'power-transmitting connection between the feed-rolls and rotary mandrel or spindle, whereby the latter will have the same circumferential speed as the former.

A0. In a wire-coiling machine, the combination of a pair of feed-roll shafts gear-connected at their rear ends and provided with a pair of feed-rolls at their forward ends; forming mechanism involving a rotary mandrel or spindle arranged parallel with the said feedroll shafts, and having its rear end gear-com nected with one of the latter, whereby the said mandrel and feed-rolls will have the same circumferential speed; and means for driving the said mandrel and feed-rolls for the purpose of coiling the wire about the former.

41. In a wire-coiling machine, and in combination with a mandrel and feed mechanism, a forming-roll adapted and arranged to bend the wire about the mandrel and journaled at the end of a shank or stock clamped within the bore of a split collar; the opposite end of said shank or stock being provided with a slotted flange, an adj Listing-screw being arranged to extend through said slot and into the said split collar, and the latter being provided with a laterally-projecting stud which is clamped within the bore of asplit supportingsocket; the said adjusting-screw being rotated for the purpose of adj usting the shank or stock longitudinally in the bore of the split collar, and the slot in the said flange being adapted to permit a rotary adjustment of the shank in the said collar.

42. In a wire-coiling machine, and in combination with the feed mechanism, mandrel and forming-roll, a supporting-roll adapted and arranged to press the wire against the mandrel and journaled at the end of a cylindric shank or stock; said shank or stock being held for both rotary and longitudinal adjustment in the bore of a. split collar, and the latter havinga stud which is clamped within the bore of a split supporting-socket; and an adjusting-screw being provided for adjusting the shank longitudinally.

43. In a wire-coiling machine, the combination of adjustable feed mechanism, and forming mechanism comprising a mandrel and supporting and forming rolls; the formingroll being adjustable relatively to the mandrel, and the supporting-roll being shiftable from one side of the mandrel to the other,

wherebya right or left handed coil may be formed at will.

44. In a wire-coiling machine, the combination of vertically-adjustable feed-rolls; a rotary horizontally-arranged mandrel or spindle; a supporting-roll adapted and arranged to press the wire against the mandrel; aforming-roll adapted and arranged to bend the wire about the mandrel in the form of a spiral coil; the said forming-roll being adjustable relatively to the mandrel, the supporting-roll being shiftable from one side of the mandrel to the other, and the mandrel or spindle being reversible, whereby either a right or left hand coil may be formed, as desired.

.' 45. A wire-coiling machine comprising a pair of feed-roll shafts gear-connected at their rear ends, and provided at their forward ends with a pair of feed-rolls; one or more adj usting devices for vertically adjusting the feedroll shafts; a rotary mandrel gear-connected at its rear end with one of the said feed-roll shafts, and adapted at its forward end to cooperate with supporting and forming rolls in bending the wire into a spiral form; a spacing finger or tool for producing an open-wound coil, the said spacing finger or tool and the supportin g-roll being interchangeable,whereby the wire may be fed either over or under the mandrel; an adjustable gear-plate adapted to provide a support for one or more gears by which the mandrel and feed-rolls are connected, and whereby one or more of said gears may be removed for the purpose of permitting a reversal of the mandrel without reversing the feed-rolls; one'ormore adjusting devices for adjusting the forming-roll relatively to the mandrel, and means for driving the latter and the said feed-rolls; the machine thus constructed being adapted to form either right or left hand coils which may be either open or close wound.

46. In a wire-coiling machine, and in combination with a rotary mandrel and adjustable feed mechanism, an adjustable gearplate adapted to form a support for one or more gears by which the mandrel andfeed mechanism are connected, and whereby one or more of said gears may be removed for the purpose of permitting a reversal of the said mandrel without reversing the feed mechanism.

47. In a wire-coiling machine, and in combination with forming mechanism involving a mandrel, apair of feed-rolls for feeding the wire to said forming mechanism; and one or more adjusting devices adapted and operative to shift the feed-rolls so as to permitthe latter to feed the wire to either side of said mandrel, whereby either a right or left hand coil may be formed.

48. In a wire-coiling machine, and in combination with forming mechanism, a pair of feed-roll shafts journaled in housings and provided with cooperating feed-rolls; the said housings being arranged in guideways, and one or more adjusting devices being provided for shifting the housings within said guideways the shifting of the housings operating to adjust the feed-rolls relativelyto the forming mechanism, and to thereby permit the latter to form either a right or left hand coil according to the position given the feed'rolls.

4-9. In a wire-coiling machine, and in combination with forming mechanism, a pair of horizontal feed-roll shafts journaled in housings and arranged one above the other; the said shafts being gear-connected at their rear ends, and provided with cooperating feedrolls at their forward ends; the said housings being arranged to extend through vertical guideways, and adj usting-screws being provided for raising and lowering the housingsin said guideways; the shifting of the housings serving to adjust the feed-rolls relatively to the forming mechanism, and to thereby permit the latter to form either a right or left hand coil according to the position of the feedrolls.

50. In a wirecoiling machine, and in combination with suitable forming mechanism, a pair of horizontal feed-roll shafts arranged one above the other and journaled in housings; the said housings being adapted to fit and slide in vertical guideways, and the lower one of the housings beingarranged to rest upon the upper ends of adjusting-screws; the said shafts being gear-connected at their ends, and provided with a pair of feed-rolls at their opposite ends; means for maintaining the upper feed-roll in operative relation with the lower roll, and means for rotating the feedrolls for the purpose-of feeding the Wire to the forming mechanism.

51. In awire-working machine, and in combination with forming mechanism, a pair of feed-roll shafts gear-connected and journaled in housings, and also provided with a pair of cooperating feed-rolls; the said housings having a hinge or pivotal connection with each other, whereby the feed-rolls may be separated without stopping their rotation; and means for keeping the feed-rolls together.

52. In a wire-coiling machine, and in combination with forming mechanism, a pair of horizontal feed-roll shafts arranged one above the other and journaled in housings; the rear ends of the said shafts being gear-connected, and their forward ends being provided with feed-rolls; the rear ends of the housings being connected by a hinge or like pivotal connection, and a spring being interposed between their forward ends; one or more adjusting devices for keeping the upper feed-roll down upon the wire, and means for rotating the feed-rolls for the purpose of feeding the wire to the forming mechanism.

53. In a wire-coiling machine, and in combination with coiling mechanism, a pair of horizontal feed-roll shafts arranged one above the other and journaled in housings; the said shafts being gear-connected at their rear ends, and provided at their forward ends with feedrolls; the said housings being adapted to fit and slide in vertically'arranged guideways, and having their rear ends connected by a hinge or like pivotal connection; two or more adjusting screws arranged to extend upwardly through the body-casting and upon which the housings are supported; one or more adj usting-screwsfor keeping the upper feed-roll down upon the wire, means for separating the rolls by swinging the upper housing about its pivotal connection with the lower housing, and means for rotating the feed-rolls and thereby forcing the wire from between the latter to the forming mechanism.

54. In a wire-coiling machine, and in combination with forming mechanism involving a rotary mandrel, a pair of horizontal feedroll shafts arranged one above the other and journaled in housings; the rear ends of the said shafts having an adjustable gear connection with the rear end of the said rotary mandrel or spindle, and the forward ends of said shafts being provided with cooperating feedrolls; the rear ends of said housings being connected by a hinge or similar pivotal connection, and the two housings being adapted to fit and slide in vertical guideways supported from the body of the machine; one or more adjusting devices adapted and operative to shift the housings in said guideways for the purpose of permitting the wire to be fed either above or below the mandrel, and one or more adjusting devices for giving the housing a relative shift or adjustment for the purpose of separating the rolls and thereby stopping the feed movement of the wire; and the said adjustable gear connection between the rolls and mandrel permitting the reversal of the latter Without reversing the former.

'55. In a wire-coiling machine, the combination of feed-rolls having a plurality of feedgrooves, a mandrel, a supporting-roll, a forming-roll, and a spacing tool or finger; the said forming and supporting rolls, and also the spacing tool or finger, being adjustable into line with any particular set of grooves on the feed-rolls, whereby either an open or close wound spring may be formed of any gage of wlre.

56. In a wire-coiling machine, the co1nbination of feed-rolls having a plurality of feedgrooves, a mandrel, a supporting-roll, a forming-roll, and a spacing tool or finger; the said forming and supporting rolls, and also the spacing-finger,being mounted upon studs having an adjustable connection with the body of the machine; and adjusting-screws adapted and applied for adjusting the said studs longitudinally in their sockets, and whereby the said forming and supporting rolls, and also the spacing-finger, may be brought into line with any particular set of grooves on the feedrolls.

57. In a wire-coiling machine, and in combination with coiling mechanism, a horizontal and vertically-adjustable trough adapted and arranged to receive the coil and support the same during its formation.

58. In a Wire-coiling machine, and in combination with coiling mechanismadapted to coil either right or left handed springs of different diameters, a horizontal trough arranged to receive and support the coil during its formation and having a downwardly-extending rod or stem, and a supporting-arm projecting from the body of the machine and by Which the said rod is supported for vertical adjustment.

LOUIS C. KRUMMEL.

Witnesses:

RoBT. LAOHMANN, WM. FIELD, Jr.

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