US165404A - Improvement in machines for checking gun-stocks - Google Patents

Description

, Jv. A. BLAKE.

Machine for Checking Gun-Stocks. No. l65f404- Parentedlulywanm.

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UNITED STATES PATENT f EEIcE.

JOSIAH A. BLAKE, OF PROVIDENCE, RHODE ISLAND.

IMPROVEMENT IN MACHINES FCR CHECKING GUNSTOCKS.

Specification forming part of Letters Patent No. 165,404, dated J uly 13, 1875 application filed June 9, 1875.

To all whom it may concern:

Be it known that I, JOSIAH A. BLAKE, of Providence, in the State of Rhode Island, have invented a new and useful Machine for Checking Gun-Stocks; and I do hereby declare that the following specification, taken in connection with the drawing making a part of the same, is a full, clear, and exact descrip. tion thereof.

Figure l is a top view of the machine. Fig. 2 is a cross-section of same, showing the lever-plate reversed. Fig. 3 is a side view of the machine, with a portion of the frame removed, showingthe feed mechanism. Fig. 4 is'a view of a receiver.

My invention, while easilyadj listed or adapted to other similar' purposes, is more especially designed for checkin g that portion of a riliestock which is concaved to receive the thumb of the right hand, commonly called the receiver,77 and consists in the mechanism for such purpose hereinafter described.

Upon a suitable bed or table, A, is a turnplate, B, having two perpendicula-r posts, C and C', which support the swing D, within which the receiver E `is placed, and firmly secured by a set-screw. VVF is a shaft which receives a rotary movement from the pulley G, and is provided at one end with the cutting-tool, while it terminates at the other in a crank, H, which operates the feed through t'he reciprocating lever I, the ratchet J, the shaft K, the ruiter-wheels L L and M M', and the pinion N, working in a curved rack, O, which is attached to the side of the Swing D.

The operation of my machine, the swing D having been set at the extreme of its outward movement, as shown in Filgs. l and 3, and the receiver E placed therein and firmly secured by the set-screw P, is as follows: M0- tion being imparted to the shaft F the cutting-tool attached at the end cuts a groove in the concave surface at each rotation, and at each rotation the swing D is carried forward by the feeding mechanism before mentioned the distance necessary to present the receiver to the successive strokes of the cutter until the desired surface has been entirely eut. At the last stroke of the cutter the adjustable linger Q upon the swing D strikes the inner arm of the lever R, which moves the semicircular slide S a sufficient distance to release the lever I', which is connected with and` releases, by suitable mechanism, the miterwheel M, and the clutch U, thus suddenly stopping the machine at the appointed time. The turn-plate B is now reversed, as shown in Fig. 2, the swing D having been pushed back to its original starting-place, and the miter-wheel M and the clutch U thrown into gear, when the same cutting operation is repeated, with the exception that the grooves made by the cutting-tool, by reason of the change in the position of the turnplate, will run across those made at the irst operation. The frame V, which holds the toolshaft F, is hinged at the back end to the plate W, which is in turn pivoted to the main bed or table A, so that the cutting-tool may be easily and nicely adjusted to its work by the setserew X, which raises or lowers, as occasion may require, and the set-screw Y, which moves it horizontally.

I have not particularly described the shipping mechanism, which releases at the proper moment the ruiter-wheel and clutch, for the reason that the particular arrangement and construction thereof are not essential so long as the result is obtained, which result might he accomplished by different combinations of levers and springs, as the taste or ingenuity of the builder might dictate.

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

1. The turnplate B, having perpendicular posts C and C', supporting a swing, I), the whole arranged and operating substantially as described, for the purpose of holding and presenting the receiver to the action of the cutting-tool.

2. lhe adjustable tool-shaft F opera-ting in J OSIAH A. BLAKE.

Witnesses:

G. H. CARPENTER, Jr., WALTER B. VINCENT.

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