US510529A

US510529A - Hinge for folding squares

Info

Publication number: US510529A
Authority: US
Publication date: 1893-12-12
Anticipated expiration: 1910-12-12

Description

PATENT OFFICE.

ELIPHALET DE CAMP, NEWARK, NEW JERSEY.

HINGE FOR FOLDING SQUARES.

SPECIFICATION forming part of Letters Patent No. 510,529, dated December 12, 1893. 7

Application filed March 16, 1893.

To all whom it may concern.-

Be it known that I, ELIPHALET DE CAMP, a citizen of the United States, residing in Newark, county of Essex, and State of New J ersey, have invented certain new and useful Improvements in Hinges for Folding Squares; and I do hereby 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 letters of reference marked thereon, which form a part of this specification.

This invention relates to new and useful improvements in hinges especially adapted for the folding square described in my former patent, No. 488,545, of December 27, 1892, and has for its object such a construction of hinge, that the arms connected together, when opened, shall present a perfectly flat surface without any portion of said hinge projecting above said surface.

The invention consists in the improved hinge, its connections with the folding square and in the combination and arrangement of parts hereinafter more fully described and claimed.

Referring to the accompanying drawings, Figure 1 represents a plan viewof a folding square provided with my improved hinge. Fig. 2 is an end view of Fig. 1 when the square has been folded together, and Fig. 3

.is a sectional view on the line so of Fig. 1.

In said drawings a and b represent the arms of the square provided with mitered ends (1. Said ends are pivotally joined together by hinge plates 0 countersunk into the arms a and b, so that the surfaces of said plate a are flush with the surfaces of the arms a and b when the square is opened. The ends of said hinge plates 0 are rounded as clearly shown in Fig. 3 of the drawings. The thickness of said hinge plates 0 corresponds to the thickness of the square. Passing parallel to the miter line at of the square and through perforations in the ends ofhinge plates 0 and the arms a and b are the pins or pintles 1', adapted with the hinge plates 0 to hinge the arms a and 12 together. The arms a and b are provided with an inwardly beveled groove h in which is adapted to slide a locking bolt g, the upper surface of which is also flush Serial No. 466,271. (No model.)

with the surface of the square. Said bolt g is adapted to engage, when the square is opened the groove h on'both sides-0f the miter lines d and to lock said arms in that position. By preference the length of the groove his one half longer than the length of the locking bolt 9, and that portion of the groove which is formed in the surface of one of the arms a or b is at least the same length as that of said locking bolt.

By using my improved hinge the square may be folded on either side and when opened, there will be no projections on either surface.

I do not intend to limit myself to the use of the hinge to a folding square as it maybe used for many other articles without departing from the spirit of my invention.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a folding square, a hinge consisting of two or more independent hinge plates having perforated ends, in combination with two pintles, each passing through the perforated ends of the hinge plates and through the parts to be hinged together, said hinge plates extending into the substance of the hinged parts, substantially as described.

2. In a folding square, a hinge consisting of two or more independentplates having perforated ends, in combination with two pintles passing through the perforations in said plates and the parts to be hinged together,

said hinge plates being let into the parts to be hinged so that their surfaces are in the same plane, substantially as described.

3. A folding square consisting of the arms a and b united at their mitered ends by hinge plates 0, set in said arms and extending on either side of the miter line, the surfaces of the hinge plates and of the arms being in the same plane, and by two pintles passing through said arms, beneath their surfaces and parallel to the miter line, and through the ends of said hinge plates substantially as described.

In testimony that I claim the foregoing I have hereunto set my hand this 14th day of February, 1893.

ELIPHALET DE CAMP.

Witnesses:

ALFRED GARTNER, WM. D. BELL.