US282886A

US282886A - Miles e

Info

Publication number: US282886A
Authority: US
Publication date: 1883-08-07
Anticipated expiration: 1900-08-07

Description

(Modeh) M. E. HAMILTON. COMBINED LOOK AND LATCH. No. 282,886. Y Patented Aug. 7, 1883.

UNITED STATES PATENT OFFICE.

MILES E. HAMILTON, OF AUEUEE, NEW YORK, ASSIGNOR or ONE-HALF TO GEORGE GREEN, OF SAME PLACE.

COMBINED L'OCK AND LATCH.

SPECIFICATION forming part of Letters Patent No. 282,886, dated August '7, 1883.

' Application filed May 12, 1883. (ModeL) I To all whom it may concern:

Be it known that I, MILEs E. HAMILTON, a citizen of the United States, and a resident of Auburn, in the county of Cayuga and State of New York, have invented certain new and useful Improvements in Door Locks and Latches;

and I do hereby declare that the following is a full, clear, and exact description of the invention,which will enable others skilled in the art to which it appertains to make and use the same, reference beinghad to the accompanying drawings, which form a part of this specification, and in which- Figure 1 is a perspective view of my improved door latch and lock. Fig. 2 is alongitudinal horizontal section of the same. Fig. 3 is a longitudinal vertical section of the same, and Figs. 4 and 5 are perspective detailviews of the latch and stem. Fig. 6 is a perspective of the key.

Similar letters of reference indicate corresponding parts in all the figures.

My invention has relation to door-locks and latches; and it consists in the improved construction and combination of parts of the same, as hereinafter more fully described and claimed.

In the accompanying drawings, the letter A indicates a' cylindrical casing, divided longitudinally in two halves, the one of which, B, is provided with a flanged plate, 0, the diametricallyopposite flanges D of which are perforated for the reception of the securingscrews E, which secure the lock to the door in its correspondingly-shaped recess, while both halves are provided at their other ends with projecting lips F, which are perforated for the reception of a screw, G, by which they are secured together, and the upper half is provided with a projecting lug, A, fitting into a recess, I

D, in the rear side of the face-plate. The front plate, 0, has a square or rectangular opening, H, through which the bolt I slides, the inner part of w the divided casing forming a bearing for the same. Aspiral spring, J, is coiled around the bolt, bearing against a partition, K, some distance inside the plate 0, with one 'end, and bearing with its other end, which is bent inward, through a transverse hole, L, in the bolt, forcing it forward. The

inner end of the bolt is flat, and has a longitudinal transverse slot, M, through which the stem N of the handle of the lock passes, and the upper and lower sides of the slot are recessed at O, at opposite sides, for the purpose of allowing room for two diametrically-opposite lugs or ears, P, which are out off straight at their rear edges and rounded at their front edges. The rear end' of the bolt is cut off square, and the blunt or square ends of three tumblers, Q, bear against the same, preventing it from'sliding back when they are turned down, the tumblers turning upon a longitudinally-slotted sleeve, R, turning in a transverse bore or perforation, S, in the casing,with their inner wider bases. The central tumbler, T, is rigid with the sleeve, and has an aperture or slot, U, in the center of its base, correspond ing to the pin of .the key, while the other tumblers have short slots or notches V, extending from the central apertures, and correspond ing to the longitudinal slot in the sleeve when they are raised. Three double-bent springs, WV,

are fastened at one end to the bottom of the easing, and bear with their downward-bent free ends against the grooved rear edges, Y, of the tumblers, which are cut off perpendicularly, with their lower corners beveled, so that the tumblers may turn freely down and back, the springs bearing against the grooved rear edges, Y, and the grooved lower edges, Z, when the tumblers are either in their vertical or horizontal positions. The key a has a bit, 1), formed by a bent rod, fastened to the stem, and extending laterally from the collar for a short distance, whereupon it is turned down parallel with the pin a, and it is adapted to slide in the slot in the sleeve R andproject into the notches V in the tumblers, turning them.

It will be seen that by only inserting the bent bit of the key into the two of the tumblers they may be turned down, leaving the third tumbler standing upright, preventing the key from opening the look from the other side, thus making the lock proof against being opened from the side opposite to the side at which it was locked, when desired.

Having thus described my invention, I claim and desire to secure by Letters Patent of the United States- IOO 1. The combination, inadoor latch and lock, [lock-spindle having two diametrically-oppoof the spring-actuated bolt I, the longitudisite lugs, one set to the side of the other, and nally-slotted sleeve R, having rigid tumbler having rounded front and straight rear edges, I 5 T, and loosely-turning tumblers Q, having as and for the purpose shown and set forth. 5 notches V, the double-bent springs W, and the In testimony that I claim the foregoing as key a, having pin 0 and bit I), as and for the my own I have hereunto afiixed my signature purpose shown and set forth. in presence of twp witnesses.

2. The combination of the sliding bolt hav- T ing a spiral spring wound around it, forcing it MILES HAMILTOL 10 out, and having a longitudinal slot in its rear \Vitnesses:

flattened end, the sides of which end are 're- ED. J. MOORE, cessed at opposite sides, as described, and a S. J. XVEsTFALL.