US386033A

US386033A - Charles w

Info

Publication number: US386033A
Authority: US
Publication date: 1888-07-10
Anticipated expiration: 1905-07-10

Description

(No Model.)

G. W. REEVES.

TRY SQUARE AND BEVEL.

8 8 8 1 0 1 y l u TU d w n w a P 2 w 1)? A J i E. a a m 2 G v r/ A c m IIQH Mm. i 6 E a L C f E F I; JA j u H c M H kw i m 3 Kai/EM Kim Nv PETERS. Phowunm n her. washm wn, D. c.

iJNirsn STATES ATENT Erica.

CHARLES \V. REEVES, OF BOSTON, MASSACHUSETTS, ASSIGNOR JACOBS, OE SAME PLACE.

TO JOSEPH TRY-SQUARE AND BEVfiL.

SPECIFICATION forming part of Letters Patent No. 386,033, dated July 10, 1888.

Application tiled October 3, 1887. Serial No. 5251.373. (No model.)

To all whom it may concern:

Be it known that I, CHARLES \V. REEVES. of Boston, in the county of Suti'olk and State of Massachusetts, have invented certain new and useful Improvements in Try Squares and Bevels, of which the following is a full, clear, and exact description.

This improved T or try square and bevel is composed of two blades each having parallel straight edges and a slot or other equivalent way along its length and parallel with said edges, and also guide-setting lines across its face, a crosspiece also similarly slotted and provided with parallel straight edges, and a thumb or headed screw threaded nut and screw-threaded bolts for each of said blades, and applied thereto and to the common crosspiece,so as to enable said blades to be fastened to said cross-piece in the positions of adjustments at which they may have been placed to serve the purposes of their use, and all otherwise as hereinafter described.

- In the drawings forming part of this spcciilcation, Figure 1 is a face viewof the improved T or try square and bevel. Fig. 2 is an edge view, and Fig. 3isacross-section,line33,Fig. 2.

In the drawings, A flllt B arethe two blades; O, their common cross-piece; D and E, the thumb or headed screw-threaded nuts, and G and H the screw-threaded and headed bolts.

Each blade A 13 preferably is made of thin steel, with straight and parallel edges a and a, Z) and If, respectively, extending along their length, and each blade through its thickness has a slot, J, extending centrally along and for a portion of its length.

The cross'picce (-3 has parallel and straight edges 0 c and it has through its thickness a central slot, K, extending along and for nearly ing brought to a seat against the cross-piece, bringing at the same time the head of the bolt on which it is screwed also against said crosspiece, the blade is made secure against move-- ment. \Vith a screw-nut D E loosened, the blade to which it is applied is then free to be moved lengthwise or swung upon, or both moved lengthwise or swung upon the screwbolt of said nut, and said screw-bolt is also free to be moved lengthwise on the cross-piece and the cross-piece on it, and so being moved, the blades, or blades and their cross-piece, so adjustcd as to each other. can then be made se on re by-tightening up the screw nuts and bolts, as before stated.

To enable straight edges of the blades A 13 to be set at any desired angle in relation to the straight edges of the cross-piece C,one lace, M, of each blade is provided with cross-running guide-setting lines N, of which there may be any desired number and any desired angles of direction, but at least one, as at N,-on each blade, by which to set the straight edges of the blade at a right angle to the straight edges of the cross-piece, and thus to adapt the instrument for use as a try or T square.

It is obvious that the construction of blades A and B, their common cross-piece O, and the attachment of the parts together, as described, enables the blades to be placed and secured at any desired angle as to each other and to their common cross-piece, and also to project for a greater or less length beyond either or both edges 0 c" of said cross-piece, the whole thereby adapting the instrument for various and innu merable pu1poscs-as, for illustration, a T or try square and a bevel.

The cross-piece preferably is made of metal; but it, as also the blades, may be made of other its whole length, and between its opposite material-such as wood, or hardvulcanized infaces, 0 0 it has aslot, L, which extends from dia-rubberwhich may be suitable; butinetal edge 0 to edge a, suitable to receivethe blades is preferable in each instance.

A B, of the same thickness. Having thus described my invention, what I The blades A B are placed in the slot L of claim, and desire to secure by Letters Patent, the cross-piece G, and thescrew-threaded shank is of a headed bolt, G H, passed from one side of A trysquare and bevel composed of a crossthe cross-piece through the slots J of blades head, G, having opposite parallel straight and cross-piece C and projected tromtheot-lier edges, 0 c, and along its length slots K L, side, and on their soprojecting portions a through its thickness and acrossits width, and screw-threaded nut, D E, is screwed, and beof steel blades A 13, each having opposite parallel straight edges, a a b b, gnidesetting lines N N across their faces M, and a slot, J, and each entered into the slot L of cross-head O, in combination with headed screw-bolts G H 5 and screW-nutsD E, fastening blades and crosshead together, as described, for the purposes specified.

In testimony whereof I havehereuuto set my hand in the presence of two subscrib ng witnesses.

CHARLES \V. REEVES.

\Vitnesses:

CHARLEs L. MANTZ, l ALBERT W. BROWN.