US1288576A - Wire coiling and cutting machine. - Google Patents

Description

EL w. HAR-I.

WIRE COILING AND CUTTING MACHINE. Y

APPLICATION FILED DEC. 8. 1916.

1,288,576- Patented De@.24,1918.

3 SHEETS-SHEET l.

IMI/Erl fr* E. W. HART.

WIRE COILING AND CUTTING MACHINE.

APPLlCATloN FILED DEc.8.1916.

LQSSY. Patented Dec. 2J., 1915.

3 SHEETS-SHEET Z.

` I r1 VE/vnr @Q7/WQ?? Af far/15g E. W. HART.

WIRE CoILING AND CUTTING MACHINE.

APPLICATION FILED DEC. 8 1916.

Patented Dec. 24, 1918.

3 SHEETS-SHEET 3.

In ver? fr .is rapid and accurate in A @NITEM TATE@ PATENT IFFItClE.

EDISON W. HART, OF MASSILLON, OHIO, ASSIGNOR TO RELIANCE MANUFAC- TURING COMPANY, 0F MASSILLON, OHIO, A CORPORATION 0F OHIO..

WIRE COILING AND CUTTING 'MACHINE T o all whom lit may Concern:

Be it known that- I, EDISON IV. HART, a citizen of the United States, residing at Massillon, in the county of Stark and State of Ohio, have invente-d certain new and useful Improvements in IYire. Coiling and Cutting Machines, of which the following is a specification.

This invention relates to what I shall for convenience term a wire coiling and cutting machine, thel object of the invention being toV provide a machine of this character which l action and by which the necessary stock can be coiled in an effective manner and cut off into predetermined lengths at desired intervals to form a desired product for instance a lock washer. This is an article vwhich can be formed with advantage by the machine, although other coiled structures can be produced. Obviously also it is not always necessary that wire be employed for the stock to be coiled may be of any suitable nature.

In the drawings accompanying and forming part ofthe present specification I have shown in detail one convenientform of embodiment of the invention, which I will set forth fully in the following description to enable those skilled in the art to practice the invention. I do not restrict myself to this v"exact disclosure, however; I may depart therefrom in several respects within the scope of the invention defined by the claims following said description. s

Referring to said drawings:

Figure 1 is aside elevation of the machine.

Fig. 2 is aV vertical sectional elevation of Fig. 1. looking toward the left and with parts broken away. i Fig. Bis a side elevation of the lower rear portion of the machine and as lseen frointhe right in Fig; '2.

Fig. 1 is a front elevation.

Fig. 5 a side view` and Fig. 6 a plan view of coiling means, detail views of which will hereinafter be more particularly described.

Fig. T is a. detail view 0f portion of the pawl and ratchet means.

Specicaton'of Letters Patent.

' is advance-d.

Patented Dec. 241, 1918.

Application led December 8, 1916. Serial No. 135,720.

Like characters refer to like parts throughout the several views, which are on different scales..

The framework for carrying the different parts of the machine may be of any suitable character. That shown comprises in its construction the base or bed 2 and the column or upright 3 rising therefrom, the two being united in any desirable manner as by bolts 4, of which there may be any'proper number. The column 3 near its lower end is cut away to produce a practically flat surface as 5 to which is bolted or otherwise suitably connected the table 6 which directly supports the coiling means.

In the present case the coiling means comprises a head as T and a mandrel as S. This head and mandrel are both normally fixed, being disposed at right angles or practically so to each other.v The head T has the slot 9 open at the front t0 receive the mandrel S, the mandrel extending oppositely from the slot. Generally speaking this particular construction is somewhat similar to that disclosed in Let-ters Patent No. 1,213,180, granted to me January 23, 1917 and to which reference may be had. The mandrel""8 is rigidly held by a chucking element as 10 in the upright portion 0f the bracket 11 fastened as by screws 12 to the table 6. From this it will be clear that by taking out said screws the mandrel 8 with a piece of stock coiled about it can be removed through the open front end of theslot 9. The'coiling head 7 is suitably rigidly fastened to the carrier or bloc-k 13 adapted to be clamped-as by 'the' clamping member 14 to the table 6. The coiling head T h'asa chamber 15 adjacent to and intersected by the open ended slot. 9, the wall of this chamber being separated from the wall of the slot 9 a distance practically agreeingwith the thickness of the stock and acting to coil the stock or wire 17 about the mandrel 8 as the stock or wire In the present case the feed or forward movement of the stock as will hereinafter appear, is obtained automatically or at least mechanically. The wire is moved in the direction of the arrow in Fig. 5 and striking the wall of the chamber 15 is the pitch of the` coiled or helical structure.

axes. the coperating pairs of rollers peripherally straighten the wire 1T after the wire passes.

Such a blade or gage member is also set A forth in my prior application.

The wire is fed from a reel and initially passes under the action of straightening rollers, leaving the latter and being grasped b y feed rollers whichconduct the same positively' yet intermittently to the mandrel or coiling mechanism of which the mandrel forms a part. I will now describe an arrangement of straighteningand feeding rollers which has been found satisfactory. To the table 6 is bolted or otherwise secured a bracket 19 which acts as a convenient support for the feed rollers to which I have already referred. Bolted or otherwise conveniently connected with the bracket 19 is an extension as 2O which acts suitably to support the two groups of rollers 21 and 22. ,the axes of the rollers 21 being transverse to those of the rollers 22., The groups of rollers are disposed in coperating pairs and are grooved. They guide and through the guide element 23 mounted on the extension 20. As shown the coperating pairs of rollers 21 turn about vertical being Imovable about horizontal axes. Although the rollers coperate in pairs, they are shown as staggered. The wire from the reel as will be clear, is first passed between the sets of rollers of the group 21 and then between the sets ofrollers of thesecond group 22 where it is received between the feed rollers 23 and 2l which are positively and intermittently driven. These rollers 23' and '2l are practically in the form of disks and the lower roller has a circumferential groove .virtually midway between its sides to receive the wire 1T best illustrated in Fig. 2. The roller 23 as shown is fastened to the shaft 25. while the roller Q-lis fastened to a practically similar superposed .shaft 26. the two shafts being-supported by suitable @bearings in the bracket 19. The bearings Qfor the upper shaft 26 may be adjusted as by screws 2S and 29 to compensate for wear. the screw 29 being furnished with a hand wheel 30 (Fig. 2') to faf cilitate its adjustment. Keyed or otherwise suitably connected with the shaft 2.3 is a spur gear 31 in mesh with a companionspur gear 32 fastened asby keying to the upper shaft 26. The lower shaft '25 as will hereinafter appear is positively driven. and it will be clear that when it is thus operated it effects a similar action through the intermediate the head of said screw gears 31 an'd 32, to effect the simultaneous and proper rotation of the feed rollers o1" disks 23 and Q-l to/positively advance the stock 1T.

Fastened as by keying to the shaft 25 isa ratchet wheel 33. The shaft, 25 loosely sup- -ports between the ratchet wheel 33 and the bracket 19--the rocker or arm 3l which has a pivoted connection with the lower end of the pitman 36. the stroke of which canbe adjusted as will hereinafter more particularly appear. to regulate the degree of movement of the rocker or oscillating arm 3l and therefore of the pawls 3T. 3S and pivotally supported upon the' rocker..4 These pawls coperate with the. toothed periphery of the ratchet wheel By this adjustment as will be clear. the amount of stock to be advanced by the rollers or feed disks 23 and 2l through thel intermediate parts can be adjusted and a similar observat-ion applies to the structure to be coiled. The points or teeth of these pawls are so disposed that each engages a coperating ratchet tooth at a diierent pointl in the length thereof. the result being that at least one pawl as shown for instance by that on the .left in Fig. T

willalways be behind the radial part of a ratchet tooth to insure always th proper intermittent movement of the ratchet wheel It will be clear. of'course. that on thel downward motion of the'rocker 34- the feed rollers or disks 23 and Q1, will be rotated so as to feed forward a definite length of stock which is projected into the chamber 15 and is coiled by the wall thereof about the mandrel S in the manner already described. The pawls 3T. and are maintained in engagement withthe periphery of the ratchet wheel 30 by springs -l0 connected therewith and also to a loop or eye l1 fitted freely around the shank of the screw l2 tapped or otherwise fitted into the outer end of the shaft 25 as illustrated in both Figs. 1 and 2.

l2 preventing accidental displacement of the loop or eve l1.

The main shaft of the machine designated by 43 and as shown it is supported bv suitable bearings on the upper end of the column or upright This shaft mav be driven 1n any desirable manner as by the pullev or drum Jell loose thereon and adapted to be engaged with the shaft as desired through the agencyof a clutch -l operated bv the rod 46 which in turn is actuated by the hand lever l? (Figs. 2 and 3l. It will be clear that when the pulley ll is in motion and that when it clutched to the shaft 43. the latter will be rotated. As shown the shaft is provided with a disk -lS rigid therewith. the exterior enlargement 19 of the disk having a T-slot 50 to receive the correspondingly shaped head 51 of the bolt 52, this bolt extending through abushing 53 in the upper end of the` pitman 36 yan constituting a means for pivotally connectingthe pitman to the disk 48 or equivalent driver. rlhe enlargement 49, it will be noted, extends radially of the disk 48 and crosses the center of motion thereof for a reason that will hereinafter appear. rl`he 'lV-head 51 is interiorly threaded to receive the screw 54 by which the bolt or pivot pin 52 can be adjusted radially of the disk 48 to regulate the degree of movement of the pitman 36. this adjustment it will be necessary to unloosen the nut 55 of the bolt and after the adjust-ment is accomplished said nut Will be set. The adjusting screw 54 has a swiveled connectionwith the plates 56 and57 closing the opposite ends of the T-slot 50, these plates 56 being heldin position against the enlargement 49 adjustingscrew 54 may as shown be furnished with a head 59 shaped to receive a wrench or equivalent tool to effect its rotation and the consequent adjustment in stroke of the pitman 36 and parts actuated thereby.

The machine is provided with a suitable cutter or knife which in the present case is automatic in action and which is so timed as to cut through the coiled stock on the completion of each helix, the result being the production of parts that are suitable for lock washers. Such a cutter as meets my conditions is that denoted by 60. The cutting edge. of this cutter is longitudinally convex. This cutter as shown is rigid with the carrier 61 connected with the block 62 having a tongue and groove connection with a practically similar block 63 rigid with the head 64 which is gibbed to the forward side of the column or upright 3 in vertical line with the bracket 13. The cutter head 64 has a spherical capped pocket 65 to receive the ball 66 on the lower section of the sectional pitman 67, the ring or band 68 of theupper section of the ptman fitting the eccentric 69 on the intermediate portion of the main or power shaft 43.` In view of this condition it will be clear that on leach rotation of the` shaft 43 the termediate parts is given one full reciprocation. lVhen the head is in its lretracted position the knife or cutter will be above the stock coiled on the mandrel V8. 0n the advance of the'head 64, however, the cutter 60 will be carried therewith and its cutting edge will be caused to cut through the foremost whirl of the stock coiled on the mandrel 8. As will be understood, the stock 17 will be advanced `on the down stroke of the rocker 34 and on each of such strokes sufflcient stock is fed forward to produce a complete helix. The parts are so timed that just before the rocker .34 commences its Before effecting d by screws as 58. rl`he said" or mandrel.

head 64 through the in- -intermittently feeding wire backward movement during which the pawls 37, 38 and 39 are ineffective, the head 64 is reciprocated in the manner set forth to obtain the cutpiece.

y ln my prior Letters Patent which l have already identified, I alluded to the importance of the means for receiving the thrust of the knife or cutter. In that application this thrust was receivedby the coiling head which lina measure is like that denoted by 7 in the present case. In some instances this is a proper construction, but it will not answer always, because in certain cases it is practically requisite i taken lfrom the coiling head and the mandrel as well. l secure this particular condition by what I term a jack support as 70 which as shown consists of two elements in threaded connection with each other to provide for the necessary ment. 'This jack support is sustained upon the table or plate 6 and the forward or outer end of the ceiling `head 7y rests on it as longitudinal adjustthat the` shock he s this is that no matter how heavy the stock may be or-how powerful the blow of the cutter ,or knife 60, this although received by both the forming head 7 and niandrel 8 is transferred to the jack support 70 and in turn to the framing of the machine without possibility of fracturing the forming head Iy find this to be a very important feature and although it is broadly suggested -in my prior application, as will be inferred, still in the prese 't instance I have provided more effectual and desirable means for preventing the possible breakage of any of the parts. 1

What I claim is:

1. In a machine ting in the production of lock washers, the

combination of a coiling head, means forl intermittently feeding 'wire-stock to the stock, an automatically operative cutter to cut 0H a single coil of the coiled structure during each period of rest to thus present a spring washer, and a `longitudinally adjustable support under the. ceilingy head to take thethrust of the cutter.-

2.' ln a machine for wirecoiling and cutting in the production of lock washers, the combination of a ceiling head, means stock lto the head, the head having means to coil the stock, an automatically operative cutter to cut olf a single coil of the coiled structure during each period of rest to thus present a spring washer, and a longitudinally adjustable support under the ceiling head to take the thrust of the cutter, the machine having a fixed part which carries said support.

for wire coiling and cutj for ting in the production of lock washers, the Combination of a coiling head and a cooperative mandrel. means for presenting wire stoel; to the mandrel` the head having means to coil the stock on the mandrel, a cuttermeans acting against the cutter to cause the same to cut olf a single Coil While on the mandrel to produce a lock washer. and a jack support under the -free end of' l0 lthe head, the machine having a fixed part which carries. the support, the latter re ceiving the. thrust of the cutter which is applied to the mandrel and the head and transferring the same to said fixed part.

In testimonv whereof I aix my signature 15/ in the presence of two Witnesses.

EDISOBv HART. Witnesses:

WM. S. SPIDm-z, R. B. CRAWFORD.

Images