US275750A - berry - Google Patents

Description

(No Model.) 4" Sheets-Sheen 1. J. BERRY.

MACHINE .EOR GROOVING NEEDLES. N0. 275,750. Patented Apr. 10,1883.

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4 Sheets-Sheet 2.

(No Model.)

J.BERR Y. MACHINE POE G ROOVING NEEDLES.

Patented Apr. 10,1883

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(No man.) t 4 sheets-sheet a. 'J.- BERRY. MACHINE EOE GROWING NEEDLES. No. 275,750. Patented Apr..10, 1883.

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- J.BEB RY.

MACHINE FOR GBOOVING NEEDLES.

110,275,750. Patented Apr. 10,1883.

UNITED STATES T ATENT l rricn.

JOHN BERRY, OF SPRINGFIELD, MASSACHUSETTS, ASSIGNOB TO THE NATIONAL NEEDLE COMPANY, OF SAME PLACE. I

MACHINE F OR GROOVING NEEDLES.

SPECIFICATION forming part of Letters Patent No. 275,750, dated April 10, 1883.

Application filed May 2,1882. (No model.)

To all whom it may concern:

Be it known that 1, JOHN BERRY, a citizen of the United States, residing at Springfield, in the county of Hampden and State of Massachusetts, have invented new and useful Improvement in Machines for Groovin Needles, of which the following is a specification.

This invention relates to improvements in machines for grooving needles, and has reference to that part of the mechanism thereof which actuates the sliding bed upon which are located the clamping devices for holding a needle and carrying it between the groove-cutters, the object being to provide improved devices for stopping and starting the bed feedscrew, and soto bringthe latter and the feednut into such operative relations as to insure a positive engagement of these two elements of the machine with each other at the instant the bed should start forward to feed the neodle between the cutters to groove it.

In the drawings forming part of this specification, Figure I is a side elevation, partly in section, of aneedle-grooving machine embodying my improvements. Fig. II is a view of cooperating detail parts separate from the machine. Fig. III is a view of the rear. end of the feed-screw and some of'its operating devices, partly in section. Fig. IV is a side elevation of the machine opposite to that shown in Fig. I. Fig. V is a front elevation of the machine.

In the drawings, A is the frame of the machine, suitably constructed to sustain the various operative parts thereof. Upon said frame are suitable upright parts for supporting the usual transverse cam-shaft above the sliding bed, upon which are fixed the cams t and i and which may be turned by the use of the crank shown in dotted lines in Fig. I, and by the movementof the said bed, as hereinafter described. Said upright parts also support the cutter-shafts a which carry the cutters a, the driving-pulley I) being secured upon one of said shafts, which are run in a vertical position and geared together in the usual manner. The said pulley bis provided with a'second groove carryinga band, 6 which runs apulleyfb fixed on the end of a vertical shaft at the rear end of the machine, on the lower end or which is fixed the bevel-gear 0 The bed B is fitted to slide back and forth on the frame A, and has secured upon it the usual needle-block, the needle-clamp e, the clamp-lever D, and operating devices whereby the needle 0 is rigidly held while being carried between the groove-cutters. A stop-screw, m is fitted to the end of bed B. A nut-yoke, 0 is rigidly secured against the under side of bed B, and has a feed-screw nut, s, fitted to it, capable of vertical movement therein. A rigid arm is secured to said yoke, reaching to one side of frame A, and has pivoted thereto the lever 0 which supports a nut-pin which passes through the bottom of yoke 12 and strikes the under side of nut s. The free end of said lever 0 engages in a groove in the rear side of a bIOOIQO and the latter is secured to the lower end of a cam-hook, 0, whose upper bent end reaches over and rests upon the periphery of the said cam i, said hook being supported in a proper box on frame A, between the lower end of which and block 0 is interposed a spring, m,to throw said-block and the end of lever 0 down when the end of said cam-hook is relieved by the movement of cam i from under it, and the end of lever 0 is lifted, and nut 1swith it, under hook 0. I

A feed-screw, s is hung in frame A under bed B, and extends through yoke o justabove nut s, the latter and said screw being like threaded. Said feed-screw 8 projects beyond the rear end of frame A, and has there hung loosely upon it the wheel (I, having on one side gear-teeth, as shown, with which the gear 0 engages, and on the opposite side a series of ratchet-teeth, as in Figs. 1 and 2. Said feedscrew projects beyond the outer face of said wheel (1, and has rigidly secured thereto,close by the latter, theolutch-guidef; and a spring clutch-arm, K, is secured against the side of said guide f by a nut screwed onto the end of said feed-screw. A clutch-finger, H, is secured to said arm K near its free end, and said clutch-finger passes loosely through a perforation in said guidef, and engages with the ratchet-teeth on wheel d when not withdrawn when cam t rotates,

therefrom, as hereinafter described. Thus when wheel d is rotated by gear 0 and clutch H is in engagement with the teeth on said wheel the feed-screw s is likewise made to revolve. Said clutch H is secured to the springarm K by the bolt m upon which is fitted a suitable nut.

A weight, g, is secured atthc end of an arm, which, like arm K, is secured to the end of the feed-screw s whereby the movement of arm K is made more positive from a vertical position to that in which it is shown in Fig. 2.

A trip-bar, z, is fitted to slide horizontally on the side of the frame A, so that its outer end may be made to project beyond the toothed face of wheel (I. Said bar has its end beveled oh, and a short arm, n is formed thereon, and a block, or, is secured on its side near its rear end. A spring, g, moves said bar to slide it toward the center of the machine, and it is made to slide so as to cause its end to project beyond the wheel d, as follows As above described, the block 0 is moved upward through its connection by hook 0 with the cam i, and is forced downward by the spring at or by gravitation, or by both. An arm, 2, is secured on said block 0 to which is secured the lower end of a post, 0:, which is properlysupported on the side of the machine, so as to permit it to freely move vertically with block 0 On said post a is a block, 00, which is adapted to strike the end of block 00 on bar a when said post descends, and thus cause the bar .2 to slide in a direction away from post a.

A stop-latch, n, is pivoted on the side of frame A to the left of the vertical part of the cam-hook 0, Figs.1 and 5, to vibrate outside of bar a and behind post a, and having a notch on its under edge, which engages with a pin in said bar when the latter has completed the movement which said post 1) has given to it, whereby said bar is held against any untimely backward movement. The block 10 on post v strikes the under edge of said latch and lifts it, and it is thrown down by a suitable spring. Said latch a is broken away from near its pivot to a short distance to the left of said notch in its edge, to show the parts behind it, (and that part of cam-hook 0 which passes up in front of latch 02 is also broken away.)

The devices by which the feed movement of the bed B is made to turn cam i from under the hook o and let the latter drop are illustrated in Fig. 4, and are as follows: A vibratory arm, 0 is pivoted on the side of frame A, and is adapted to have its free end engage with the cam i on the opposite end of the shalt on which is secured the above-named cam 1 The said arm 0 is connected with bed B by the rod 0, which is connected with said arm and bed, so that the sliding movement of the latter causes said arm to vibrate. Cam i is in the position shown in Fig. 4 when the end of hook 0 rides upon the earn a, and when bed B slides to the right in said figure arm 0 strikes cam i rotates the shaft upon which it is secured, turns camt' from under hook 0, and lets the latter drop down. The

action of said arm 0 occurs 'ust at the end of the movement of bed B to carry the needle between the groove-cutters, and consequently when the grooves are completely cut.

The operation of my improvements in securin g proper co-operative positions of feed-screw and its nut s when the latter is to be engaged with said screw for the purpose of starting the bed B and carrying the needle between the groove-cutters, and for stopping said feedscrew while the movements of other parts of the machine are uninterrupted, is as follows: The bed B is in a forward position, as shown in Fig. 1, when the needle is secured thereon to be grooved. The bed is then, by swinging lever 0 moved back to bring the front end of the needle just back of the cutters. Then the shaft on which are cams i and t is turned by the crank and cam ilifts up book 0 and causes nut s to engage with screw 8 (the latter being in motion,) by which the bed is again fed forward to the position shown in said Fig.1. Assuming that a needle-blauk has been placed in the machine, and that the bed B has been fed forward to carry said blank between the cutters to groove it, Fig. 1 represents said bed in the position it occupies after said forward movement, and while in this position the needle is removed and'another blank is secured between the clamps. While said bed thus rests pulleys b and I) still revolve and the wheel 11 rotates freely on the end of the feed-screw 8 without turning the latter. The book 0 rests on the lower part of the cam 15, where it dropped when said bed arrived at said position, letting block 0 and the end of lever 0 drop down, as shown. Thus the nut s became disengaged from said feed-screw. When the end of lever o dropped down, as aforesaid, the post 2; moved downward with it and the block at on the latter struck the end of block 00 on bar 2 and moved the latter rearwardly and caused its end to project beyond the toothed face of wheel d, where the spring-arm K struck it as it rotated and caused the clutch H to be drawn away and disengaged from wheel (I. The said latch n, by said downward movement of said block 0 and post 2;, having block 20 on it, was left free to swing down and engage with a pin on bar 2 for the purpose aforesaid. While the abovedescribed parts are in the positions above stated the bedB is, byswin gin g the arm 0 from cam i, moved back to carry the forward end of the needle-blank just back of the cutters without any obstruction until the end of the stop-screw m strikes the frame A. The transverse shaft, upon which camsi and z" are fixed, is now turned by aid of the crank shown in dotted lines in Fig. 1, carrying the high part of cam 1' under hook o, and so lifting lever o and carrying nut 8 into contact with the feed-screw s, lifting blocks w and w on post r, and consequently latch a, and letting bar z slide back, carried by spring g. The lastnamed movement of bar 2 leaves spring-arm K free to carry clutch H against wheel at and to cause it to engage with the ratchet-teeth thereon, thereby rotating said clutch-arm and clutch support f, and with them the feedscrew 8 and causing bed B toslide along on.

',lever as there shown, and as said bed moves said lever operates upon said cam, as

above described, to turn said transverse shaft and drop hook 0 from cam t, bringing said bed B to a stop at the end of the groove cuts on the needle-blank, and at the same instant, through the above-described devices, driving the bar 2 outward, where 'the rotating spring clutch-arm K will strike the short arm n on said bar 2 after having slid down on the beveled end of said bar, whereby clutch H is drawn away from wheel (1, screw 8 stopped, and said clutch-arm brought to a state of rest, as shown in Fig. 2. Thus said bed and feedscrew come to a stop at the same time, and when the bed is moved back again and nut s is nextlifted against the feed-screw the threads of one will directly enter the grooves of the other, and immediately that said feed-screw begins to rotate the bed B begins to move forward without any riding of said nut and feed-screw.

What I claim as my invention is 1 In a machine for grooving needles, the combination, with the feed-screw and its nut for moving the bed thereof, of a ratchet-wheel to rotate freelythereon, a flexible clutch-arm secured to said feed-screw, aclutch supported by said arm by the side of said ratchet-wheel, the cam z and operating devices, hook o,'and appliances, substantially as described, for disengaging said clutch from said ratchet-wheel when said feed-nut is disengaged from said feed-screw, substantially as set forth.

2. The feed-screw 8 the ratchet-wheel d, turning loosely on said screw, the clutch H, supported by the side of said wheel upon an arm on said feed-screw, the trip-bar z, and appliances, substantially as described,for giving to said bar a horizontal motion by the periphery of said wheel d, combined and operating substantially as described.

3. In combination, the post 12 and blocks w and w thereon, bar 2, having a bearing thereon for said block w, latch n, and appliances, substantially as described, for lifting and dropping said post, all as set forth.

4. In combination, bed B, rod o arm 0 cams i and i, hook 0, block 0 post 21, having block as thereon, bar 2, having abearin g thereon for said block :0, ratchet-wheel d, clutch H, arm K, and the feed-screw s substantially as set forth.

JOHN BERRY.

Witnesses a H. A. CHAPIN, R. T. HYDE.

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