Untitled record

No. 156,.3 25.

A. J. ALSTON.

Lock-Hinges.

Patented Oct. 27,1874.

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THE GRAPHIC CO. ΡΗΟΤΟ-1.1ΤΗ.39»-4-1 PARK PLACZ.N.Y.

United States Patent Office,

ANDREW J. ALSTON, OF ALLEGHENY, PENNSYLVANIA.

IMPROVEMENT IN LOCK-HINGES.

Specification forming part of Letters Patent No. 156,325, dated October 27, 1874; application filed December 19,187.3.

To all whom it may concern :

Be it known that I, Andrew J. Alston, of the city and county of Allegheny and State of Pennsylvania, have invented a certain new and useful Improvement in Shutter-Hinges; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

My invention relates to an improvement in lock-hinges; and consists in two cam-shaped projections at the base of the pintle, and a projection forming a section of a circle, in combination with cam-faced projections on each end of the part which surrounds the pintle,.together with locking-shoulders, all constructed and arranged as hereinafter more fully described, and then pointed out in the claim.

To enable others skilled in the art to make and use my invention, I will proceed to describe its construction and operation.

In the accompanying drawings, which form part of my specification, Figure 1 is a perspective view of the female part of the hinge, A' being a detail view of the ends of the part which is placed over the pintle. Fig. 2 is a perspective view of the male part of the hinge, B' being a detail view of the part at the base of the pintle.

A represents the part of the hinge which is secured in the window-frame, and G the projecting part which supports the pintle/. B represents the part of the hinge which is secured to the window-shutters, and D the part which is placed over the pintle/. At the base of the pintle are two projections with incline sides, k I, m n, and also a projection, / which is a section of a circle. On the part D of the female part of the hinge are two projections, in the form of one-half of an ellipse. On each end of the part D, which is placed over the pintle, is a projection, i. E represents the opening for the pintle /.

The two parts of the hinge being placed together, and the shutter opened and turned back against the wall of the building, the projection i will rest on the part O; and in closing the shutter, the projections g and h will travel up the incline sides m and I of the projections at the base of the pintle /, causing the shutter to rise, so that when the shutter is closed the part i will rest on the part/ In closing the left-hand shutter, the projections g and A travel up the inclines n and k. The hinges are locked by the shoulders s of part i coming in contact with the shoulders t of the part/