US172938A

US172938A - Improvement in carpenters squares and bevels

Info

Publication number: US172938A
Authority: US
Publication date: 1876-02-01
Anticipated expiration: 1893-02-01

Description

E. SIMONIN.

CARPENTERS SQUARE AND BEVEL. 17z,-933, Patented Feb. 1-,- 1 76.

fi d e aa N. FEIEHS, PHOTO-LITNOGRAPHER, WASHINGTON. DV 0. v

UNITED STATES PATENT OFFICE.

EMILE SIMONIN, OF PEOBIA, ILLINOIS.

IMPROVEMENT IN CARPENTERS SQUARES AND BEVELS.

Specification forming part of Letters Patent No. 172,938 dated February 1, 1876; application filed January 5, 1876.

To all whom it may concern: 4

Be it known that I, EMILE SIMONIN, of the city of Peoria, in the county of Peoria and in State of Illinois, have invented a Convertible (larpenters Square, Bevel, and Miter; and do hereby declare that the following is a full, clear, and exact description thereof, reference being bad to the annexed drawings, making a part of this specification, in which like letters of reference refer to like parts, and in whichi I Figure 1 represents the instrument as a square for trying the angles of solids. Fig. 2 shows the instrument as a common square for getting perpendicular lines. Fig. 3 represents the instrument as an an gulator, or for striking oblique angles; Fig. 4, an edge view, showing the slot or socket of the bar 0 between the ribs or back A.

This invention consists in a sliding slotted bar, provided with a set-screw,'whieh pivots itto the corner of a triangular body, B, or square, so as to be set at any angle with the adjoining edges of said square, being designed to till the place of three separate instruments,

viz., square, bevel, and miter, and also to ascertain the angle between' meeting lines or surfaces or transfer them. It consists in pivoting said bar through a slot, d, extending half its length, by means of a set-screw, a, to the upper end of the back A of a square, B, having an oblique side, f, in such a manner that said bar canbe used with reference to angles formed between the latter and either adjacent side of the square B. The bar 0 can be inclosed' at one end in the socket or recess 0 between the back pieces A, which form the stay of the square B, as seen in Fig. 2, which represents the instrument as a commonsquare,

the set-screw a holding the bar firmly in said' socket. Fig. 4. shows said socket or recess 6. Fig. 1 shows the instrument as a' gaging, trying, or hollow square; Fig. 3, one of its positions when used to obtain the angle between converging lines or surfaces, 9 loeing the imaginary point of convergence.

The advantages of this instrument are its convertibility into a square or bevel or angulator with facility, its compactness, and simplicity of construction.

What I claim as my invention is- 1. The rectangular triangle B, having a recessed back piece, A, recess 0, and a sliding bar, 0, provided with slot (1 and set-screw a,

substantially as and forthe purposes fde-.