US179919A - Improvement in locks for doors - Google Patents

Description

T. HENDRICKS.

LOCKS Pontoons, m. No.179,-919'. j Patented {1115118, 1875.

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ATTORNEYS.

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UNITED STATES PATENT OFFIoE.

THEODORE HENDRICKS, 'OF NEW YORK, ASSIGNOR TO HIMSELF AND WILLIAM E. PRICE, OF BROOKLYN, N. Y.

IMPROVEMENT IN LOCKS FOR DOORS &c.

Specification forming part of Letters Patent No. 179,919, dated July 18, 1876; application filed May 16, 1876.

To all whom it may concern:

Be it known that 1, THEODORE HENDRICKS, of the city, county, and State of New York,

have invented a new and Improved Tubular fully described.

In the accompanying drawing, Figure 1 is a perspective view of my improved lock with part of the case removed. Fig. 2 is a perspective view of the part of the case removed Fig 3 is a perspective view of the key. Fig. 4 is a top view of the lock,as represented in-Fig. 1. Fig. 5 is a longitudinal section on line X X, Fig. 4c. Fig. 6 is a plan of the part of the case represented in Fig. 2. Fig. 7 is a sectionon line Y Y, Fig. 4; and Fig. 8 is a section on line Z Z, Fig. 4.

Similar letters of reference indicate correspondiu g parts.

The case is made of two half-circular tubes, A B, and a faceplate, O, the latter being attached to the end of the part A of the case, and having a screw-thread, c, for screwing into the wood to secure the look; also a bevel shoulder, D, for making a neat finish, flush with the surface. The part B of the case fits on the edges of the part A, and is fastened by the lug l) on the inside of the face-plate entering the slot E in the end plate F, and by -\vard.

constitute the forward and backward stops,

the stud Gin the catch-plate H entering the slot I. J is the bolt, which, at the head, is as wide as the interior of the tube, but is narrowed to halt the breadth, or thcreabout, to make room for the keyway T, with one edge fitting against the wall of the tube, and the other resting on the plate H. The spring K is attached to the-side of the bolt by the stud L, and is raised by the key Without raising the bolt to engage and disengage the hooks N with the catch-slots O P, for fastening the bolt. This spring is split, or made in two parts, one of which has a longer hook or catch, N, than the other, to be raised by the bit-Q, while the other is raised by the ward R, and there is a stud, S, on the bolt to prevent it from being raised bya key not having the The shoulders to in the side of the bolt and act against the stud b of plate H, which bears against the side of the bolt to keep it in its place.

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

A tubular lock provided with a split or.

double spring, K, having book ends of diii'erent length *to engage with a catch-plate, as shown and described.

THEODORE HENDRICKS.

Witnesses:

' T. B. MOSHER,

ALEX. F. ROBERTS.

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