US174639A - Thomas d - Google Patents

Description

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THOMAS D. PARSONS, 0F BRISTOL, CONNECTICUT.

IMPRQVEMENT IN HINGES.

Specification formng part of Letters Patent No. Eg, dated March 14, 1876; application filed' ctober 20, 1874.

To all whom tmay concern: 4

Be it known that I, THOMAS D. PARSONS,

of Bristol, in the county of Hartford and State' of Connecticut, have invented certain new and useful Improvements in Hinges, of which the following is a specification:

My invention consists of a new and improved hinge, the contour of its leaves being formed of one or more segments of a circle,

Which'circle or circles embrace both edges of the leaves, all as hereinafter described.

In the accompanying drawing, Figures 1, 2, and 3 are front views of hinges which embody my invention, the same being represented wit-h the leaves open.

A A designate the two leaves of the hinge, and'B its hub. These may be of sheet or cust metal,.and either fast or loose joints, as may be desired. The contour of each leaf,lexcept the edge near the hub, is in the form ofa segment or segments of a circle. In Fig.'1 only one segment is used in each leaf, which segment is greater than yone-half of the circle, whereby its center is brought ywithin the body of the leaves A A, and .some little distance from the hub, but near enough to the hub so that the circle of which the segment or segments are formed willv reach it.v In the other figures a larger number of segments are cmployed, but the saine position of the center and circumference of each circle is retained.

' In order tofit my hinge so as to embed it within the articleto which it is to be secured, I 'take abit or boring-tool of the same size as the circle of which thev segments upon the leaves are formed, and with it bore to ,the depth ot' the thickness of the leaves so' many depressions as there are segments, and corresponding therewith. If properly bored, the leaves will tit said depression'sw'ithout further fitting.

f The function o'r result of locating the cir,

cles or segments thereof inthe particular relation to the leafV of the hinge, as hereinbefore described, is now maderapparent by that the lling in of the leaves must be' completed by hand. In Fig. 2, C designates the edge of the door, and D the jamb or casing.`

A few of the advantages of my invention are, thatthe centers of the circles of which the segments are formed coming within the body of the leaves and the circles reaching the hub, the hinge can be fitted each leaf separately, thereby enabling the hinge to be 'rendily fitted to the edge of a door as well as to its front; also, by bringing the center of the circles within the body of the fleaves, and litting them in correspondingly-shaped recesses, they are prevented from slipping edgewise in any direction. thereby making it rest very firm in thewood, and requiring only a few screws for fastening it in place.

I claim as my invention- A hinge having the entire outer portion of its leaves formed of one 0r more segments of the same circle, and its hub constructed to intersect the arcs formed by the opposing segments, substantially as'and for the purpose` set forth. v

v THOMAS D. PARSONS. Witnesses:

GEO. T. STEELE, l

Y JAMES SHEPARD.

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