US555721A - bement - Google Patents

Description

(No Model.) 2 sheets-sheen 1.

` W`. 0. BEMENT.

SWAGING MAHINERY.

10.555,721.. lMmmmMans lafpg?. W 1 1 nnumw; f7

orney (No Model.) l 2 Sheets-Sheet 2.

W. o. BBMBNT. SWAGING MAGEINBRY.

No. 555,721. Y Pgteted Mar. 3, 1896.

n'ness es, mmm icl/673i??? L /12g, i067 UNITED STATES PATENT OFFICE.

VILLIAM O. BEMENT, OF VORCESTER, MASSACHUSETTS, ASSIGNOR TO THE VIRE GOODS COMPANY, OF SAME PLACE.

SWAGING MACHINERY.

SPECIFICATION forming partof Letters Patent No. 555,721, dated March 3, 1896.

Application filed May 23, 1894. Serial No. 512,210. (No model.)

To all whom t may concern: being thrown down and the cam-head in con- Be it known that I, WILLIAM O. BEMENT, tact with the roller which actuates the swaga citizen of the United States, residing at ing-die, and the various parts of the machine Vorcester, in the county of Worcester and being shown in their relations when at work. 55 5 Commonwealth of Massachusetts, have in- Fig. 6 is an end view through the line 6 6, Fig. vented certain new and useful Improvements 1, showing the half-nut engaged with the v in Swaging Machinery, of which the following thread of the chuck-bearing shaft and the is a specification. tripping-cam and lever operated by it, which The object of my invention'is to provide a through connectingmechanism throws up the 6o 1o machine in which a metallic rod of indefinite knuckle-joint and disconnects the cam-head length may be cut into a number of pieces of with the roller actuating the swaging-die, as uniform size, each of which may be swaged shownV in Figs. l, 2, and 4. Fig. 7 illustrates any desired part of its length. The machine the parts shown in Fig. (5, their relations only is one in which the rod, while being swaged, being changed, and shown as they appear 65 15 has both rotary and longitudinal motion and when the half-nut is out of contact with the receives a series of blows on its surface bechuck-bearing shaft andthe tripping-cam has tween properly-constructed dies. In this reoperated upon the lever. Figs. 8 and 9 are spect it is to be distinguished from that class side views of the chuck-lever and chuck-head, of swaging machinery in which the stock is showing the friction-cam on the end of the 7o 2o not turned, but in which the swaging-dies are lever-arm which regulates the friction beplaced in a revolving head and act toward a tween the chuck-bearing shaft and the bed common center. of the machine. Fig. 10 is a front view of the In the drawings, Figure 1 is a plan view of chuck, showing the bell-shaped opening in the machine, also showing in detail the conwhich the rod to be swaged is inserted. 75

z 5 struction of the chuck-bearing shaft. Fig. 2 In Fig. 1, A is the bed of the machine, which is a side elevation showing the manner of opmay be mounted upon legs or upon a table, erating the knuckle-joint which controls the as may be found most convenient. cam-carriage and throws the camhead in and 1 is a pulley which may receive power by out of connection with the roller which actmeans of a belt from the main shaft. The 8o 3o uates the swaging-die shown in plan in Fig. pulley 1 is mounted upon a shaft 2, the end 1, and also shows the lever which operates of which is shown, which shaft is mounted in the chuck which holds the rod being swaged, suitable boxes 3 4 upon a movable cam-carand also operates the mechanism for cutting riage 5, and the shaft may be kept in continsaid rod to the desired length, as will more uous operation whether the other working S5 3 5 clearly appear hereinafter. Fig. 3 is an end parts of the machine are in operation or not. elevation showing the nut, by engagement The cam-carriage is connected at its rear with which longitudinal action of the chuckend by means of a knuckle-joint at the point bearing shaft is secured, and the manner of 6 with the plate 7, which is secured to the rear throwing the nut out of connection with said of the bed of the machine, and in such a man- 9o Ao shaft, and means by which the main shaft 2 ner that when the knuckle-joint is raised, as is thrown out of connection with the other in Fig. 4, the cam-head S mounted upon the working parts of the machine, so that the lat-Y shaft 2 is thrown out of contact with the roller ter may be automatically stopped at any de- 9, through which the swaging-die 10 mounted sired point. Fig. 4 is an end View on the line upon a suitable way is actuated. 95 45 4 4, Fig. 1, which shows the Vknuckle-joint The movable die 10 is opposed by a similar thrown up and the cam-head pulled back out die l1, which I prefer to have stationary, alof contact with the roller which actuates the though it may be movable. swaging-die, the cam-head being in such a The cam-head 8 may be so constructed as position that as it revolves it does not touch to give any required number of blows during roo 5o the roller. Fig. 5 is an end view covering each revolution of the main shaft.

the details shown in Fig. 4, the knuckle-joint In practice 1 prefer to construct my machine as shown inthe drawings, to give four blows for each revolution.

At the opposite end of the shaft 2 from the main pulley 1 is the pulley 12, which has frictional contact regulated by the spring 59 and movable box (it with the pulley 13 upon the shaft 14, so that when these pulleys are in contact the shaft 14 may be revolved. Upon the opposite end of shaft 14 is a gear-wheel 15, which meshes with the gear-wheel 1 C, which operates the chuck-bearing shaft 17, which revolves continuously while the swagin g mechanism of the machine is in operation. The chuck-bearing shaft 17 is mounted in suitable boxes 1S 19, the formerrof which is secured to the bed of the machine and the latter of which may be moved longitudinally in properly-eonstructcd ways on the bed of the machine.

The chuck 20 is mounted upon the end of the shaft 17 and contains a holding and eutting-off device, both of which are operated by the same nieans and in the same way. The holding device is operated by the lever 21, pivoted at 22, and depressed or elevated by means of the collar 23, actuated by the lever 24. (Shown in Figs.2,8,and 9.) Atits opposite end the lever 21 bears upon the pin 25, which, when the opposite end of the lever is elevated, bears upon one part of the split bushing 26, which is thus brought in cont-act with the rod 27,which is being swaged, and which is shown in outline in Fig. 1. The other part of the split bushing 28 is stationary.

The lever 29 is constructed and operated the same as lever 21, and operates the cutter 30, so that when the end 31 of the lever is elevated the cutter acts upon the rod 27, severing it at the required point.

It will be seen that the movable part 2G of the bushing is a fiat piece, while the stationary part 2S is aright-angled piece, the rod passing through a hole in its base. This construction makes it possible to fit the stationary part 28 of the bushing firmly in the chuck-head, affordin g a rigid bearing against which the cutter 30 may act.

The shaft 17 is most conveniently made hollow, so that the rod, cut into parts of any required length, may be pushed through the shaft, as shown.

lt willbe noted that when the cutter 30 acts upon. the rod and sevcrs it the natural consequence would be that the unsecured portion of the rod would be pushed out of the path of the part that follows it, and hence could not be pushed through the ch uck-bearin g shaft. To overcome this difficulty I insert a spring 32 in the chuck-head, which pushes the severed portion of the rod back into position, so that it may be pushed thro ugh the chuck-shaft by the part of the rod which follows it.

The longitudinal movement of the shaft 17 is secured by means of the half-nut 33 in the arm 34E adapted to engage with a thread upon the shaft, so that when the two are in contact the shaft 17 has a positive longitudinal motion, which ceases when the two are thrown out of contact. This is done by elevating the handle 34E of the nut-arm, as shown in Fig. 7. Then the nut engages with the thread upon. the shart 17 the tendency would be to pull the nut-arm laterally were it not for the shoulder G3 securely fastened to the bed of the machine, which holds the nut-arm in place.

The machine is so constructed that the longitudinal motion of the chuck-bearing shaft is regulated automatically and in the following manner: The movable box 19 is provided with a projection 35, which embraces the rod 3G, which is looselymounted in the boxes 37 As the carriage 19 travels along with the chuek-bearing shaft, the projecting piece strikes the shoulder 39, and the rod 36 is moved longitudinally in its bearings until the end 40 strikes the downwardly-projecting end 471 (shown in Fig. of the rockenshaft 4:2. This throws back the overhanging hook 43, held in position by the spring 60, out of contact with the nu t-arm 33, which leaves the spring L1--1 free to lift the handle 3+l,and thus throw the nut out of contact with the thread upon the shaft 17 and stopping the longitudinal motion of the latter.

The rotary motion of the shaft 17 continues somewhat longer than the longitudinal motion, but is also automatically stopped., and in the following manner: It will be noted upon referring to Fig. 3 that if the nut-arm 33 is clevated, lifting the nut out of contact with the shaft 17, the opposite end 45 of the nut-arm, pivoted at 4G, is depressed, as shown in Fig. 7, and the tripping-piece 47, loosely mounted in the end 45 of thc nutarm and held in position by the spring (51, is brought into such relation to the lever-arm 43 that the tripping-cam 4.9, which is mounted on the shaft let, coming in contact with the rear end of the tripping-piece L17, forces its outer end into contact with the lever 48, as shown in Fig. 7, the result being that the lever is pushed forward, and hence the rod 50 is drawn to the right.

Upon turning to Fig. 2 it will be noted that the end of rod 50 is connected with rod (32, through the opposite end of which runs the rod 52, which operates the knuckle-joint 6. The rod 52 is provided with a shoulder or collar 51, which, when the machine is in operation, has a bearing upon the under side oi' the rod (32, as shown in the drawings, Fig. 2. W'hen, however, the rod 59 is drawn to the right, as explained in connection with Fig. 3, the rod G2 is suiciently moved from its normal position to release the shoulder 51 from its bearing. The spring 53 is then free to act and pushes up the rod 52. This elevates the knuckle-joint 6 and throws the cam-head S out of contact with the roller 9, actuating the swaging-die 10, and also throws frictionwheel 12 out of contact with friction-wheel 13, and thus stops the rotary motion of shaft 17.

The knuckle-joint is depressed by means of the trcadle 54, pivoted at 55 and shown in Fig. 3, and connected, as shown, with the rod IOO IIO

52. When' the lever is depressed, the shoulder 51 is drawn down through the opening in the end of thev rod 62 and secures a' bearing, as shown in Fig. 2, the clutch and cam-head taking the position shown in Fig. 5, thus putting in operation all the Workin g parts of the machine, excepting the mechanism for imparting longitudinal motion to the shaft 17. This iseffected at the pleasure of the operator by engaging the nut with the thread upon shaft 17 by depressing the nut-handle 34, as shown in Fig. 6.

It will be noted that the pulley 1 and the main shaft 2 are in continuous operation, whether the other working parts of the machine are running or not, and the other working parts of the machine are started and stopped at pleasure by depressing or elevating the knuckle-joint, which controls the movement of the cam-carriage, and by engaging the nut with the thread upon shaft 17.

This machine is designed to cut from a rod of indefinite length any required number of pieces, which may be swaged any required part of their length, leaving the unswaged portion of each piece longer or shorter, as may be required. Each piece is severed from the rod after the operation of swaging is completed, and, as has been explained, the same operation which grips the rod preparatory to starting the swaging mechanism severs the piece which has been swaged. Consequently it is essential to have some means for accurately fixing the length of the unswaged portion of each piece. This is effected by means of the stop 56, Fig. 1, which is adjustable, but can be secured to the outer edge of the bed of the machine at any desired point, and the stop is fixed ata point which, when the longitudinal movement of the shaft 17 has ceased, as already explained, shall be removed from the nearest side of the box 19 a distance equal to the united lengths of the abutting unswaged portions of two pieces of the rod. After one piece has been swaged, and before the chuck-carri age is moved forward to its original position to repeat the operation, the carriage is moved back until the side of the box 19 strikes the stop 56. The hold of the chuck upon the wire is then loosened, as shown in Fig. 8, and the carriage moved forward into the position for starting, as shown in Fig. 1. The lever 24 is then moved forward, as shown in Fig. 9. This not only grips the rod tightly, but at the same time severs the piece which has been swaged, leaving the unswaged end of the cut piece and the unswaged end of the uncut piece which follows it of the desired length.

In order that the rod may be held while the chuck-carriage is being moved forward after a piece has been swaged, I arrange at the opposite end of the bed of the machine the clutching device 57, which holds the rod securely and prevents it from moving when it is not held in the chuck.

In order that the chuck-carriage 19 may not move too freely, it is provided with a friction device (illustrated in Figs. 8 and 9) acting through the lever 24, which operates the clutching and cutting levers 21 29. The lever 24 at its lower extremity is provided with a cam 58, and when the machine is in operation and the arm 24 is thrown forward, as shown in Fig. 9, the friction device is brought into operation.

Having described the details of my machine, I will proceed to describe its mode of operation.

The end of a rod of any desired length is passed into the mouth of the chuck and secured in place by throwing forward in the position shown in Fig. 9 the handle actuating the gripping and cutting-off levers 21 and 29. By this operation the rod is rmly secured and at the same time the end is cut off square. The knuckle is thrown into working position, as shown in Fig. 5, by depressing the lever 54. (Shown in Fig. 3.) The swaging-dies at once begin to operate, and rotary motion is imparted to the shaft 17, and through the friction- pulleys 12 and 13 to the gear-wheels 15 16. Longitudinal motion may be given to the shaft 17 at the pleasure of the operator by depressing the handle 34 and engaging the half-nut with the thread upon the chuck-shaft. In practice it is preferable to allow the shaft to rotate several times before longitudinal motion begins to insure a smooth iinish upon the rod being swaged. Longitudinal motion having been imparted to the shaft 17 it is continued as long as may be necessary, and is adjusted automatically, as before explained, by means of the rod 36 and the shoulder 39. The rod having been swaged the required distance, the working parts of the machine are automatically thrown out of operation, as described. The box 19 is moved back in contact with stop 56, to iix the length of the unswaged portion of each piece. Then the shaft 17 is moved back to its original position, and the operation is repeated. The shaft 17 being hollow, the completed rods are by the movement of the shaft to and fro naturally and regularly delivered without intervention on the part of the operator at the rear end of the shaft.

It is obvious that the shaft 17 is made hollow to permit of cutting a rod of indeiinite length into shorter pieces and reducing them in size, as desired. The machine could, however, be successfully run having a solid shaft; but were this done each piece swaged must be cut before it is placed in the machine, thus making the process slower and less economical.

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

1. In a swaging-machine, a shaft carrying a cam adapted to actua-te a movable swagingdie, and mounted in a reciprocatingly-movable carriage, in combination with a swagingdie and intermediate, movable die, whereby IOO IIO

said movable die may be brought to rest without stopping the cam-carrying shaft substantially as shown and described.

2. In a swaging-machine, a shaft mounted in a movable carriage, and carrying a pulley, in combination with a shaft adapted to hold a metallic rod, and an intermediate shaft, actuated by said pulley, whereby rotary motion may be imparted to said rod-carrying shaft, substantially as shown and described.

In a swaging-machine, a shaft, carrying a cam and a pulley, and mounted in a movable carriage, in combination with a shaft adapted to hold a metallic rod, and to receive rotary and longitudinal motion, and an intermediate shaft actuated by said pulley, whereby rotary motion may be imparted to said rodcarrying shaft and the rod subjected to the action of the swaging-dies, substantially as shown and described.

4. In a swaging-machine, a shaft, carrying a cam and a pulley, and mounted in a movable carriage, in combination with a hollow shaft, adapted to receive rotary and longitudinal motion, and provided with a chuck adapted to hold a rod, said chuck being also provided with cutting mechanism, whereby a portion of the rod may be subjected to the action of the swaging-dies, and then severed from the unswaged portion of the rod, and with an intermediate shaft actuated by said pulley, whereby rotary motion may be imparted to said hollow shaft, substantially as shown and described.

5. In a swaging-machine, a shaft, carrying a cam and a pulley, and mounted in a movable carriage, in combination with a hollow shaft, adapted to receive rotary motion in the manner specified, and pro vided with a thread upon its exterior surface, adapted to engage with a nut whereby longitudinal motion may be imparted to said shaft, and provided with means for holding a rod, whereby the latter may be subjected to the action of the swaging-dies and delivered at the rear end of said hollow shaft, substantially as shown and described.

G. In a swaging-machine, a shaft adapted to receive rotary and longitudinal motion in the manner specified, in combination with a chuck, adapted to hold a rod, and provided with cutting mechanism whereby the ends of the rods may be cut to exact length, substantially as shown and described.

7. In a swaging-machine, a hollow shaft adapted to receive rotary and longitudinal motion in the manner specified, in combination with a chuck adapted to hold a rod, and provided with cutting mechanism whereby a portion of the rod maybe subjected to the action of the swaging-dies, and then severed from the unswaged portion of the rod, substantially as shown and described.

S. In a swaging-machine, a hollow shaft, adapted to receive rotary and longitudinal motion in the manner specified, in combination with a chuck adapted to hold a rod, and provided with cutting mechanism wherebya portion of the rod may be subjected to the action of the swaging-dies, and then severed from the unswaged portion of the rod,and with mechanism whereby said rotary and longitudinal motion may be automatically stopped, substantially as shown and described.

9. In a swaging-machine, a hollow shaft, adapted to receive rotary and longitudinal motion in the manner specified, in combination with a chuck adapted to hold a rod, and provided with cutting mechanism whereby a portion of the rod may be subjected to the action of the swaging-dies and then severed from the unswaged part of the rod, and a spring whereby the severed portion may be restored to its normal position in line with the unswaged part of the rod, and pushed through the hollow shaft,and mechanism whereby said rotary and longitudinal motion maybe automaticallystopped, substantially as shown and described.

10. In a swaging-machine ahollow threaded shaft, provided with a chuck, and adapted to receive rotary and longitudinal motion, as specified, and having a bearing in a movable box, in combination with a stop attached to the bed of the machine adapted to contact with said box., whereby the length of the unswaged portion of each rod maybe regulated before it enters the hollow shaft, substantially as shown and described.

1l. In a swaging-machine a hollowshaft and mechanism for imparting to the same rotary and longitudinal motion, in combination with a chuck adapted to hold a rod and provided with cutting mechanism, whereby said rod may be clamped and a portion of it simultaneously severed, substai'ltially as described.

l2. As an improved mechanism, a chuck of the construction specified, containing in combination with a cutter a bushing composed of two parts, one of which is movable, whereby the pressure upon the rod to be held may be regulated, and the other of which is stationary, affording a bearing, against which the cutter may act, whereby the rod may be severed, substantially as shown and described.

WILLIAM O. BEMEN T. Iitnesses R. M. WASHBURN, C. G. WAsHBURN.

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