US894832A

US894832A - Try and bevel square.

Info

Publication number: US894832A
Application number: US31999206A
Authority: US
Inventors: Edwin H Horton
Original assignee: BENNETT W DONALDSON
Current assignee: BENNETT W DONALDSON
Priority date: 1906-06-04
Filing date: 1906-06-04
Publication date: 1908-08-04
Anticipated expiration: 1925-08-04

Description

PATENTED AUG. 4, 1908.

E. H. HORTON. TRY AND BEVEL SQUARE.

APPLICATION FILED JUN: 4, 1906.

dzwzz- EDWIN H. HORTON, or

PONTIAC, MICHIGAN, ASSIGNOR OF ONE-HALF TO BENNETT W.

DONALDSON, OF PONTIAC, MICHIGAN.

TRY AND IBEVEL SQUARE.

Specification of Letters Patent.

Patented Aug. 4, 1908.

Application filed June i, 1906. Serial No. 319,992.

To all whom it may concern:

Be it known that I, EDWIN H. HORTON, a citizen of the United States, residing at Pontiac, in the county of Oakland, State of Michigan, have invented certain new and useful Improvements in Try and Bevel S uares; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the figures of reference marked thereon, which form a part of this specification.

This invention relates to a combined try and bevel-square, and consists in the con-' struction and arrangement of parts hereinafter fully set forth and pointed out particularly in the claims.

The object of the invention is to provide an instrument of the character described, of simple and ineX ensive construction, which may be convenlently used by the artisan, and wherein the arrangement is such as to enable the ready attainment of any desired angle for the purpose of cutting a miter or other bevels, and wherein provision is made for enabling the instrument to be readilyused as a try-square.

The above object is attainedby the structure illustrated in the accompanying drawings, in which Figure 1 is an elevation showing the appli-,

cation of my invention when used as a trysquare, one side of the square also enabling a bevel to be scribed at an angle of Fi 2 is a similar view, showing the reverse si e of the-instrument, and illustrating the triangular plate swung through the handle so as to cause the hypotenuse of the triangle to stand at right angles thereto, showing its use for scribing a bevel parallel with either of the right angle sides of the triangular plate; both of said above mentioned views showing by 45 fitted lines the possible movements of the Fi 3 is an enlarged transverse secdescribes the arc of a circle. Formed upon one face of the square concentric with the circular side of the opening 2 are graduations 3 indicating degrees of a circle. Along one of the right-angle sides of the square are graduations 4 indicating inches, and along the hypotenuse of the triangle on the face opposite to that indicated in Fig. 1, are

similar graduations 5, as shown in Fig. 2.

The gra nations 4 and 5 are merely for convenience in measuring. The handle 6 is composed of two opposed registering parts of substantially identical shape which lie upon the opposite sides of the square, said parts being secured together and at the same time pivotally mounted by means of the transverse screw or rivet 7 which passes through the sides of the handle and through a washer 8 interposed between the sides of the handle and lying in a circular opening in the plate 1, as clearly shown in Fig. 3, said washer being slightly thicker than said plate to afford clearance for the handle.

In order to prevent the handle swinging beyond the right angle sides of the square in either direction, the sides of said handle are each provided with an inwardly extending lug 7 which projects into the central opening 8 in said sides. Between said lugs'is secured a filling piece 9 by means of the transverse screws or rivets 10. As the square swings throu h the handle from side to side, it is arreste on reaching the limit of its movement by contact of the opposite right angle margins 11 of the opening 2 with the filling piece 9 between the lugs on the sides of the handle. In order to permit the handle to lie parallel with the right angle sides of the square, the margins 11 of the opening 2 are cut away, as at 12, to allow the lugs 7 to lie therein, as shown in Fig. 1. The screws or rivets 10 not'only serve to hold the filler piece 9 in lace but also tie together the sides of the han le at their ends.

In order to be able to lock the pivoted square at any desired point in the handle, a thumb screw 13 is employed which is threaded in one side of the handle near its outer end, and which impinges against a small disk 14 lying in a counter-bore in the inner face of the side of the handle, as clearly shown in Fig. 3. By turning the screw so as to cause it to engage the disk 14, said disk may be crowded against the face of the square so as to lock the square and handle against individual movement. The disk 14 having a broad bearing upon the face of the square and being non-rotative, the marring of the square by the action of the screw is obviated.

The .sides 6 of the handle project beyond the opposite faces of the square and the edges of said handle serve as straight edges to place against the work 15, as shown in Figs. 1 and 2, so as to bring the instrument into proper relation thereto. Should it be desired to describe a line at any degree of inclination between a right angle and an angle of 45, it may be accomplished by loosening the thumb nut 13 and moving the pivoted square blade or plate through the handle to the desired position, which position will be indicated on the graduated are by the position of the pointer 16 on the handle with reference thereto, said thumb nut being tightened after holding the parts firmly in place.

adjustment to lock the parts in place.

In Fig. 4 is shown a modified form of construction wherein the sides of the handle 6 on their inner faces are hollowed out as shown at 17, for the purpose of making the instrument lighter, forming the inwardly extending central bosses 18 which engage the washer 8 and maintain it in place and which have a marginal bearing on the square around said washer, thereby reducing the surface contact between the handle and square and Having thus fully set forth my invention, what I claim as new and desire to secure by Letters Patent, is

1. In a device for the purpose set forth,

the combination of the plate in the form of a right-angle triangle, a two-part handle em bracing the late and lying within the area thereof, said handle being pivoted. to the corner of the plate between its right angle sides, said plate having a central opening one of whose margins is curved in the arc of a circle, the parts of the handle having inwardly projecting portions which are united through the opening in said plate, said united portions of the handle engaging the margins of the plate opening to arrest the movement of the plate in opposite directions and cause its,right angle sides to lie parallel with the sides of the handle, and a screw mounted in the handle engaging the curved margin through the opening in the plate to lock the plate against movement through the handle.

2. I11 a try and bevel-square, the combination of the triangular plate, the two-part handle embracing the plate, said plate having a circular opening at the corner thereof, a rotatable washer in said opening, a pivot passing through the sides of the handle and through said washer, and means for oining the outer ends of the sides of the handles to tie them together and allow the plate or blade to swing therethrough upon said pivot.

In testimony whereof, I sign this specification in the resence of two witnesses.

EDWIN H. HORTON.

Witnesses:

FRANKLIN A. CRAWFORD, EDITH CRAWFORD.