US625089A - Stock and die - Google Patents

Description

No. 625,089. Patented May I6, 1:99. B. P. 8. L. B. CURTIS.

STOCK AND DIE.

(Application filed Dec. 31, 1897. Renewed Nov. 4, 1898.)

(No Model.)

NITED STATES I PATENT OFFICE.

RODERICK P. CURTIS AND LEWIS B. CURTIS, OF SOUTHPORT, CONNECTICUT, ASSIGNORS TO CURTIS & CURTIS, OF BRIDGEPORT, CONNECTICUT.

STOCK AND DIE.

SPECIFICATION forming part of Letters Patent No. 625,089, dated May 16, 1899. Application filed December 31,1897 Renewed November 4, 1898. Serial No. 695 ,517. (No model.)

To ctZZ whom it may concern.-

Be it known that we, RODERICK P. CURTIS and LEWIS B. CURTIS, citizens of the United States, residing at Southport, in the county of Fairfield and State of Connecticut, have invented certain newand useful Improvements in Stocks and Dies; and we do hereby declare.

the following to be a full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and use the same.

Our invention relates to certain new and useful improvements in the construction of stocks and dies, and has forits particular object to afford a specific construction of such device which shall be very efficient and in which the threading or cut-off tools may be inserted and removed with great facility; and with these ends in view our invention consists in certain details of construction and combination of parts, such as will be hereinafter fully set forth and then specifically be designated by the claims.

In the accompanying drawings, which form a part of this application, Figure l is a front elevation of our improved stock and die with the cover-plate broken away; Fig. 2, a sec tion at the line a: a: of Fig. 1; Fig. 3, a perspective illustrating one of the threadingdies and its operating-screw in detached condition, and Fig. 4 is a bottom perspective showing a modified form of construction of threading-die.

Similar numbers of reference denote like parts in the several figures of the drawings.

constitute any radical departure in the mannor of making stocks and dies, nevertheless contribute materially toward the efficiency of the device.

In carrying out our invention -we employ the usual die-stock 1, which is provided with the ordinary operating-handles 2, and we cut therein at diametrically opposite points ways 3, which are rectangular in cross-section and which open both into the face of the stock and into the inner edge thereof. 4. are threading-dies which fit snugly within these ways, so as to be capable of sliding freely therein, and which extend inwardly beyond the inner edge of the die-Stock, as clearly shown at Fig. 1. These dies are cut away at their rear ends from the under side, so as to form recesses 5 and hooks 6, as shown at Fig. 3.

7 are thumb screws which are driven through the edges of the stock from the outside and which extend within the ways 3. On the inner ends of these screws are formed buttons 8, which when the screws and threading-dies are properly assembled extend within the recesses 5 and are inclosed by the hooks 6 and the bodies of the dies, so that it will be dies will be forced forward or backward, as the case may be.

Instead of forming the hooks 6 so that they depend immediately in the rearof the recesses 5-the dies may be cut from the bottom upward, so as to leave recesses 9v to accommodate the buttons 8, while hooks 10 may extend toward each other from the side walls of the recesses, so as to embrace the buttons at the sides, as shown at Fig. i; but we prefer the construction shown at Fig. 3, although either of these constructions will answer our purpose, since in this respect we aim to connect the dies with the screws, so as to give these dies a vertical clearance, whereby they may be picked out of the ways or inserted therein without disturbing the screws, the dies being left perfectly plain on their upper surfaces.

11 is a cover-plate which is pivoted at 12 to v clear that when these screws are operated the the die-stock and is provided at the opposite side with a hook 13, which when the plate is closed embraces a thumb-screw 14:, driven in the die-stock and by the operation of which screw said plate may be released or secured 15 are thu mb lock-nuts driven on the screws 7 and which are jammed against the stock when the proper adjustment of the dies has been effected by the operation of these screws, by the use of which lock-nuts We are enabled to secure the dies as against any displacement owing to the accidental turning of the screws.

In removing the dies the cover-plate is released and thrown back and the dies simply lifted from the ways out of engagement with the screws, and other dies may be inserted by simply dropping them within these ways, so that the hooked portions of the dies will extend behind the buttons 8, while the latter will fit within the recesses 5.

The dies may be graduated on top, as shown at Fig. 1, in order to assist in the proper adjustment of the same.

Having thus fully and in detail described our invention, what we claim as new, and desire to secure by Letters Patent, is-- 1. The combination of the die-stock having therein ways which open through the face of ways which open through the face of said stock and through its inner edge, the operatingscrews driven through the edges of the stock and extending within said ways and provided at their inner ends with buttons, the threading-dies having plain upper surfaces and guided within said Ways and provided on their rear extremities with recesses and hooks whereby said dies may be connected with said buttons with a vertical clearance, thumb lock-nuts on said screws and capable of being jammed against the stock, the cover-plate pivoted to the face of the stock and provided with a hook, and the thumb-screw driven Within said stock, which screw is embraced by said hook in the closed position of the plate and is then operated to firmly clamp the latter, substantially as set forth.

In testimony whereof we affix our signa= tures in presence of two witnesses.

RODERICK P. CURTIS. LEWIS B. CURTIS. WVitnessesi F. W. SMITH, Jr., M. I. LONGDENi

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