US1036A - Lock for trunks - Google Patents

Description

UNITED STATES PATEN FFICE.

HENRY C. JONES, OF NEWARK, NEW JERSEY.

LOCK FOR TRUNKS, CHESTS, &G.

Specification of Letters Patent No.

To all 'whom it may concern Be it known that I, HENRY C. JONES, of the city of Newark, in the county of Essex and State of New Jersey, have invented a new and useful Improvement in the Construction of Trunk, Chest, ,Sliding-Door, and other Looks; and I do hereby declare that' the following is a full and exact description of the lock as improved by me.

The nature of my invention consists in the peculiar construction of the two levers which pry open the aws.

The objectof my improvement is to construct a lock on a principle as much as possible to lessen its liability to get out of repair, with particular regard to its strength, and as much as possible to guard against the pcssibility of its being picked.

To enable others, skilled in the art of making locks, to manufacture and use my invention, I will proceed to describe its oper ation and construction.

The case, which is marked A in the drawing is constructed of sheet iron of an oblongsquare. The front plate, or plate throug which the key passes, is projected or eX- tended from the boX or case to which it forms a part, sufficient to form a ange, by which it is screwed or nailed to the trunk or chest, upon the inner side.

The working parts of the locks consist first, of the jaws, catches, or hooks marked C, C, in drawing No. l. Their oice is to hold the head of the bolt, B. They play each upon a pivot passing through and riveted on the outside of the case. When shut they are parallel with each other Jfrom their pivots to about half their length, where each is curved out suliciently to make room for the head of the bolt B. At the end of each jaw is a head, hook or catch to clasp the neck of the bolt B. The jaws or catches are kept shut by springs operating upon the outside of each. I prefer the scroll spring as in drawing No. l, marked D, I), on account of its diminished liability to break, although 1,036, dated December 15, 1838.

that particular manner of spring is not essential to the operation of the lock.

E in drawing No. l represents the levers to f orce open the jaws, also represented in section at Fig. 2. They both play upon the same pivot, and are located between the straight part of the two jaws. Their general shape is an oblong square, their width being equal to the space between the two jaws. One corner of each lever is taken off in an angle sufficient to free and prevent its action upon one jaw; one operating upon one jaw and the other upon the other jaw. An arm is extended from each lever to receive the action of the key. The partition or plate F separates the two arms. The object and advantage of the double lever is to make it necessary, in order to open the lock, to operate upon both levers, at one and the saine time.

By this construction the operation of one lever alone by any instrument, not calculated to reach both, is not suiiicient to force the bolt B. I-Ience the difticulty of its being picked. A small stop port is put within the orbit of the key, which is hid by the partition plate F. Its object is to stop the key and retain the jaws in an open position. The key is withdrawn by a retrograde motion. The bolt B is riveted to a plate of a suitable shape to secure it to the lid of the trunk or chest, when the head of the bolt passes through the aws, which are closed by the spring.

What I claim as my invention, and desire to secure by Letters Patent, is-

The employment of two levers, which act upon the jaws or catches, in opening the lock for the purpose and in the manner herein before described.

Newark, November 28th, 1838.

HENRY C. JONES.

' Signed in presence of# O. F. EDDY, DAVE) A. HAYES.

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