US312031A - Thomas snape - Google Patents

Description

(N6 Model.) 2 Sheets-Sheet 1.

T. SNAPE] NUT TRIMMING MACHINE.

No. 312,031. Patented Feb. 10 1885.

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2 Sheets-Sheet 2. T. SNAPE.

NUT'TRIMMING MACHINE. No. 312,031.

Patented Feb. 10, 1885.

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UNITED gTaTns PATENT @rrrcis.

THOMAS SNAPE, OF PAXVTUCKET, RHODE ISLAND.

NUT TRlh/HVHNG MACHINE.

SPECIFICATION forming part of Letters Patent No. 312,031, dated February 10, 1885,

(No mothl.)

To all whom it may concern.-

Be it known that I, THOMAS Snare, of Pawtucket, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Machines for Trimming Nuts for Bolts, &c.; and I do hereby declare that the following is a full and correct description thereof, reference being had to the accompanying drawings, making a part of this specification.

This invent-ion relates more particularly to the arrangement of devices for holding and feeding the nuts, and mechanism for operating those parts, and is fully illustrated in the drawings, in which- Figure 1 shows a top view of the machine. Fig. 2 is a side elevation of the same. Fig. 3 is a front elevation. Fig. 4 shows a section of a part of the machine at line to, Fig. 3. Fig. 5 is a top View of one of the nut-holders. Fig. 6 is a section of the feed-trough and a top view of one of the carriers through the line 00 90, Fig. 3.

The two portions of this machine are the exact counterparts of each other, except that one part is right-handed and the other lefthanded with regard to the arrangement for feeding the nuts to the trimming-punches. The main frame A has two horizontal shafts, a, extending through its upper part, with gear-wheels 9 attached to one end, and eccentrics h secured on them just inside of the bearing on the other end, of the shafts. This bearing is held by a hood or extension of the main frame over the eccentrics. These eccentrics are connected by straps and rods f to the punchsockets Z, that move up and down in ways attached to the frame, and carry the trimming-punches 0. Under these punches are placed the dies 0', resting on a part of the main frame carried out on each half of the machine to hold the feeding mechanism. Two

sockets Z. Two pins, r, fast to the sockets, work in slots in the levers and give them motion as the punches move up and down. A broad trough, B, is placed on the frame between the two eccentrics, and is divided through its middle into two parts by a movable bar, at. The outer end of this trough is cut out, and the bottom of the trough sloped down to meet the tops of the vertical side troughs, D, (see Fig. 3,) which are curved out at their lower endsone toward the right and the other to the lef --so as to connect with the nut-carriersn in front of the dies. An adjustable guard, o, is held over each vertical trough by a bolt passing through the slotted supports 0. The vertical troughs are made adj ustable. so that they may be increased in width by the screws 8 and slots in the lower ends of the troughs. (See Fig. 4.)

The nut-carriers a are attached to the feedslides i by bolts through slots in them for the purpose of adjustment, and are rabbeted down at their inner ends, (see Fig. 4,) so as to be just level with the lower ends of the vertical troughs D, that the nuts when they slide down the troughs will pass out onto the rabbeted part of the carrier n when it is drawn back. Adjustable plates t are placed on each side of the nut-carriers, to keep the nuts in place on them while being carried in to the dies. On each side of the dies are clamping devices j, for holding the nuts when they are brought over the dies by the carriers. These clamps are shown in plan in Fig. 5. They consist of two jaws, j, held in recesses in the adjustable plates 3 and are pressed out by the springs z, placed back of them in the recesses. As the nuts are pressed forward between the clamps, they (the clamps) recede slightly and press on the nuts, so as to hold them when the carriers are drawn back. As the punch 6 comes down, the taper teat on the endof it enters the hole in the nut a, Fig. 4, and adjust it. If the hole is at one side of the center, the spring-clamp will recede on the wide side and allow the nut to center itself properly over the dies below.

The operation is as follows: Motion being given to the machine by a belt on the pulley 7c, the intermediate gear-wheel, 9, running on a stud secured to the frame between the gears g 9, drives the two gear- IOU wheels 1 and operates the two punches e by means of the eccentrics h. The nuts to be trimmed are put in the trough B, and the attendant takes aposition in front of the trough. Then with a finger of his right hand he draws one nut at a time into the right-hand vertical trough, and at the sametime draws a nut with his left hand in the same way into the vertical trough to the left, or alternately, if pre ferred. The nuts then pass down the troughs, and are held at the lower ends by the high part of the carriers at until the carriers move far enough out for the rabbet at the inner end to come opposite the end of the vertical trough when one nut only slides onto each carrier, as there is no room for more. As the punches are raised by the eccentrics the carriers are moved in by means of (he levers o, connection-rods S S, and gear-wheels d d, with the nuts 6 on them, until the nuts are between the clamps j over the dies 0, where they are held as the punches come down, and the carriers are drawn back by reverse movements of the parts that carried them forward. The punches then push the nuts through the dies and trim off the surplus metal. The thin ends of the carriers 11-, (see Fig. 4,) as they come forward with the nuts, push off the chips left on the top ofthe dies from the nut last trimmed, to prevent clogging and consequent injury to the work.

All the parts are made adjustable, so the machine will trim nuts of different sizes. The "ertical side troughs can be Varied in width by the screws 8 in the slots, Fig. 4; and the guards 0 over the nuts in the troughs can be adjusted for nuts of different thickness by the screws and slots 0, and also at c, to keep them over the middle of the troughs. The carriers a can be set backward or forward on the slides i, to accommodate nuts of different width, by the screws that hold on the slides. The extent of the motion of the carriers in and out may also be varied by the studs in the levers '0 and in the arm '0. The feeding devices for the two punches may be adjusted independently of each other, so that large nuts may be fed to and trimmed by one of the punches at the same time that smaller ones are being trimmed by the other punch. When only one size is used in both parts, the division min the trough B may be taken out and the nuts all put in one pile.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. The combination of two trim ming-presses having a common driving-shaft and gear-connections with a trough to hold the nuts, and two adjustable side troughs to conduct the nuts to the carriers that feed them to the dies, substantially as and for the purpose set forth.

2. The adjustable carrier n, made with a rabbct at the inner end extending under and beyond the nut 0 when feeding it to the dies, substantially as and for the purpose specified.

3. The side troughs, D, made with slots, and provided with screwss at theirlower ends,

and having guards O, with slotted supports 0,

substantially as and for the purpose set forth.

4. The jaws j, held in recesses in the adjustable plates y, and the springs z, in combination with mechanism for feeding the nuts to them, substantially as and for the purpose specified.

THOMAS SNA PE.

\Vitnesses:

JAMES HACKING, JOHN NEWTON.

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