US376236A

US376236A - Wood-joint

Info

Publication number: US376236A
Authority: US
Publication date: 1888-01-10
Anticipated expiration: 1905-01-10

Description

' J. COLLINS.

WOOD JOINT.

Patented Jan. 10, 1888.

UNITED STATES PATENT OFFICE.

JAMES coLLINS, on GRAWFORDSVILLE, INDIANA.

WOOD-JOINT.

SPECIFICATION forming part of Letters Patent No. 376,236, dated January 10, 1888.

Application filed March 9. 1887.

To all whom it may concern.-

Be it known that I, JAMES COLLINS, a citizen of the United States, residing at Orawfordsville,

- in the county of Montgomery and State of Incabinet-work or of a vehicle, the object being to produce a simple and durable joint of great strength withoutsplitting the wood, and which can he used with great advantage in the art of carriage-making. While particularly adapted to wood, the joint can be made with any equiv-. alent material.

The invention consists in the construction of the uniting-key and the combination of the same with the two pieces of wood or equivalent material forming thejoint, as hereinafter described, illustrated in the drawings, and pointed out in the claim hereto appended.

In the accompanying drawings, Figure 1 represents a perspective view ofthe two pieces of wood prepared and in position to have the joint made between them. Fig. 2 represents a perspective view of the uniting-key. Fig. 3 represents a perspective view of the twopieces of wood and the key driven home to form the joint. Fig. 4 shows a perspective view of a miter-jointunited by a modified form of the key. Fig. 5 shows a perspective view of a second modification of the key.

Serial No. 230,282; (No model.)

cient degree of sharpness. The key may be flat, curved, bent upon itself so as to form a longitudinal angle,orofany other useful crosssection. A key bent upon itself at right angles longitudinally is preferable in making U miter-joints, and a key straight in cross-section in making ordinary joints.

To form the joint, the two pieces A A are held firmly together with their respective kerfs a a in line with each other. The lower. end, b, of the key, which is rounded or beveled at its corners for easy insertion, is placed upon the said kerfs, and the key is driven home therein, the'kerfs forming a guide and passage-way forthe key and the ridges forcing themselves into the wood of the adjacent pieces. \Vhen the joint is thus formed, the key itself prevents the pieces from slipping on each other, and the ridges, by their hold on the wood, prevent the pieces from separating laterally, so that a strong and very secure joint is made.

My invention is especially designed for use on buggy-bodies.

Having thus described my invention, I claim- V In ajoint, the combination of the members A A, provided with the communicating kerfs a a, having parallel plain-faced sides, and the metallic key B, adapted to enter the said kerfs and connect the members, the said key having parallel sides, one of which is smooth, and the other one of which is provided with a series of parallel longitudinal ridges or corrugations which enter one of the sides of the kerfs as the key is driven thereinto, substantially as specified.

In testimony thatl claim the foregoing as my own I have hereto affixed my signature in presence of two witnesses.

.J AM ES COLLINS.

Witnesses;

ISAAC M. VANCE, MICHAEL J. CARROLL.