US76955A - James swan - Google Patents

Description

J. SWAN.

Auger Making.

Patented April 21, 186s;

,'N. v716,955. l

@initie tatrs dstrat @fitta JAMES SWAN, OF. SEYMOURCVONNECTICUT.

Lam Param No. 76,955, ma April 21, 186s.

IMPsovnn Macururron MAKING tuera-Bris.

'ro ALL wHoM 1T MAY ooNcERN:

Beit known that I, JAMES SWAN, of Seymour', in the county of New Haven, and-State of Connecticut, have invented a new and improved Machine for Manufacturing Angers and Bits; and I do hereby declarethat the following is a full and exact description thereof, whiehwill enable others skilled inthe art to make and use the same, referencebeing` had to the accompanying drawings, and to the letters of reference marked thereon.

This invention consists in a new and improved machine for manufacturing screw-angers and bits, and ina novel arrangement of 4dies and a clamp, all arranged Vand operated as hereinafter set forth, whereby bits and augers'may be very expeditiously manufactured, and at a moderate cost.

In the accompanying sheet of drawings- Figure is a vertical section of my invention, taken in the line ara, fig. 2.

Figure 2, a plan or top viewv of the same.

Figure 3, a vertical sectionnof the same, taken in the line y y, iig. 2.

Figrres 4 and 5, detached views of holding-jaws pertaining to the same.v

Figures 6, 7, and 8, views of an auger or bit in process ofmanufacture.

Similar letters of reference indicate like parts. v

A represents the frame of the machine, which may be constructed invany proper manner to support the Working parts, and B B represent two parallel shafts, placed in the upper part of said frame, and connected by bevel-gears, C, to a shaft, D, on which a cam, E, is rmly keyed. The power is applied toene of the shafts, B.

4On each shaft, B, there are secured 'three cams, F F' F". The cams F F" project from their shafts inuop'posite directions, and the central one, F', being at right angles with the other two.-

j Thev cams of the two shafts, which have similar letters, operate in pairs, and simultaneously against slides,

G G' G", all of which are shown in iig. 2, the-slides being arranged in pairs, as shown clearly in*l said figure.

The slides above alluded to are pressed toward each other bythe cams, and are Vthrown back by springs, H, Which are shown in fig. 1r j i I represents a slide, which is iitte'dvbctween suitable guides, a a, on the frame A, and is shoved forward in the direction indicated by the arrow 1, by the cam E, and thrown'back by a spring, b, as shown in g. 3. On thisfslide, I, there is firmly secured ajaw, J, a correspondingjaw, J', being attached to a pivoted bar,'K, having n. lever, L, at its rear end. The-jaw J' is directly above J, and the former is brought down upon the latter, by means of a lever, L, arranged as shown in fig. 3.' v,These jaws J J are made in such a manner as to receive the twisted blank of the auger or bit, andhold'it firmlyr'while the cutting-portion of the bit is-formed. A face view of these jaws is shown clearly in iigsdl and 5g", I

The cutting-portion ofthe auger or bit isformed by dies at the ends of the slides G'r G' G". The dies c of the slides Gr are formed each with three recesses, cZ, as shown-in Iig. 3, and these dies, when pressed against the end ofthe auger or bit-blank, form three spursor projections, e, as shown in g. 6. The diesf of the slides Gi' are formed each with three recesses and four cutting or prominent surfaces, g, which cut the burr around and between the spurs or projections e, and leave the same in a clean, sharp state, as shown in g. 7. The dies Zt of the slides G" are formed with projections, z', which bend the end-spurs e outward at rightangles with the axis of the auger or bit, as shown in tig. 8, and complete the work. i

The cam E isof peculiar form or shape, as shown clearly inV fig. 3, and has a circular portion, j, which is concentric withl shaft H. It also has two straight surfaces for edges, Z1: c, which are tangential, or about so, with the circular portion j. The cam also has two curved edges, Z Z', one of which, Z', is a portion of a circle greater than Z.

When the slide I is forced fully back, under the influence of the spring Zz, the slide is in contact with the portion j of the cam E, andwhen the slide is in this position, the twisted blank, properly heated, is placed and griped between the jaws J J'` On applying power to one of the shafts, B, motion .is communicated to both, and to thcshaft D, the cam E rotating in the direction indicated by arrow 2, and, while said part 7' of the cam is in contact with the slide I,

A the latter is'stationary, and the slides G G are moved toward each other by the cams F F, and the three spurs or projections e are formedby the dies e, as shown in iig. 6.

The slides G are then moved back by their springs, II, and the slide I is moved forward, in the direction indicated by arrow 1, by one of the straight portions, 7c, of the cam E, and the spurs e oi' the anger or bit are bro'uoht in line with the dies of' the slides G Gr and the burr aronnd the s nrs or ro'eetions e is trimmed oil',

a 7 P l) .l

as shown in iig. 7, the curved portion Z retaining the slide I, until the cams F have completed their work, and

the springs I-I of the slides G have thrown them back. The portion of the cam E between the two curved portions Z Z then throws the slide I still farther forward, so that the spurs e will be in line with the projections z' of the dies L, and saidV projections being pressed toward each other by the cams F, the end-spurs e e will be bent ont at right angles with the axis of the anger or bit, as shown in fig. 8. The slides G are then forced back by their spring H, and the slide I forced back by itsfspring, b, another blank placed betwfccn the jaws .I J', and the operationrepeated. A

Having thus described my invention, I claim as new, and desire tosecnre by Letters Patent- 1. The holding-jaws I J', attached to the'sliding plate I, in combination with the slides Gr G G, provided with the dies cf/t, all constructed and arranged to operate' in the manner substantially as and for the purpose set forth.

2. The combination of the holderJ J', constructed as described,` in combination with the operating parts thereof, as herein shown and described.

JAMES SWAN.

Witnesses:

B. W. SMITH, E. KNIGHT.

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