US1981121A - Lock - Google Patents

Description

NOV. 20, 41934. f M RAMOS 1,981,121

. j. Ov 'O- @1 f1 llomey Patented Nov. 20, 1934 UMTED STATES LOCK ManuelvRamos, Forest City, Pa., assignor of onethird to George Ganforcoro, Archbald, Pa., and

one-third to Manuel Pa.

G. Gaselas, Foresty City,`

Application June 16, 1933, Serial No.167'l621811 1 Claim.

This invention relatesto a.lock, the general object of the invention being to provide a lock with a pair of bolts and a key for operating the bolts, with means whereby the key must be placed in different positions to operate the bolts so it will be difficult for one not familiar with the lock to open it, even though he has the right key.

This invention also consists in certain other features of construction and in the combination and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claim.

In describing the invention in detail, reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views and in which:-

Figure 1 is a top plan View of the lock.

Figure 2 is a section on line 2-2 of Figure 1.

Figure 3 is a plan View with the cover removed.

Figure 4 is a fragmentary sectional view showing the key in place.

Figure 5 is a fragmentary plan View, with the small casing removed.

In these drawings, the casing is shown at 1 and the cover plate at 2. The base of the casing is formed with a rear extension 1 and the front wall is formed with two openings 3 and the rear wall with two openings 4. A pair of bolts 5 and 6 is located in the casing and have their ends passing through the openings 3 and 4, these ends being reduced, as shown. Each bolt is formed with a projection 7 on its outer edge to provide a shoulder and with a projection 8 on its inner edge which forms a shoulder for engaging the inner wall of the front of the casing, when the bolt is projected, to limit projecting movement of the bolt. The inner edge of each bolt is also formed with an inwardly bowed part 9 which extends from the projection 8 to a notch 10 also formed in the inner edge of the bolt and a bar 11 passes across the mouth of the notch.

A pawl 12 is pivoted in the casing adjacent the outer edge of each bolt and is adapted to engage the shoulder formed by the projection 7 to hold the bolt in projected position. The pawl is moved into engagement with the shoulder by the spring 13. Each pawl carries a laterally extending wing 14 which extends over the bolt and over the recess formed by the inwardly bowed part 9. The spring pressing the pawl 12 against the rounded part of the projection '7,

acts to hold each bolt inprojected position, as

shown in Figure 3.'

A tubular member 15 passes through the casing and` the cover plate and through a small casing 16 formed on the cover plate and has a reduced end. passing through the base of the casing andvheld in place by the nut 17. This member is formed with a slot 18 to enable the ward 19.*,of thekeyf2o toffbe inserted into the tubular member. This' ward is notched as shown, and this notch will receive the bridge piece 11 of the bolt.

The top 2 of the casing l is formed with a pair of oppositely arranged slots 2l and the cover of the small casing is formed with a single slot 22 which is arranged at right angles to the slots 2l.

Thus it is necessary to place the key in the tubular member 15 and to turn the parts to a position where the ward 19 will enter the slot 22 j in the top of the small casing. The space formed by the small casing is of suflicient size to receive the ward and to permit turning movement thereof. After the ward has passed into the small casing, the parts are again turned so that the ward can be passed through one of the slots 21 to place the ward in engagement with one of the notches l0. Then a further turning movement of the key will cause the ward to project one of the bolts, and when the bolt is so projected, its pawl will engage the projection '7 project the bolt, which brings the ward under the front slot 21. The key is then partly pulled from the tubular member 15 into the casing 16 and then the key is given another half revolution so as to bring the ward over the rear slot 21. the ward will pass through the rear slot 21 and then the key is given a half revolution clockwise so as to project the bolt 6. Then the key is pulled outwardly to cause the ward to pass through the front slot 21, after which the key is given a quarter turn to permit the ward to be pulled through the slot or notch 22.

When the lock is to be unlocked, the key is inserted and as before described, it must be The key is then pressed inwardly so that turned to a position where it will engage the inner end of a wing 14 so that it will exert pressure upon the wing to move the pawl to inoperaedges of the bolts, the lock can be constructed.

for use with diierent keys and by constructing the bolts with steel bars loosely inserted therein, the bolts could not be sawed in an attempt to open the closure provided with the lock.

It is thought from the foregoing description'.y

that the advantages and novel features of the invention will be readily apparent.i n

It is to be understood that `changes may be made in the construction and in the combination and arrangement of the several parts, provided that such changesl fall 'within the scope of the appended claim. .n n

What I claim is:vn A lock of the class described comprising a casing having upper and lower openings in its front and rear walls, a pair of bolts slidably arranged in the casing and having blunt front ends passing through the front openings and reduced rear ends passing through the rear openings, a shoulder forming projection on the inner edge of each bolt for engaging the front wall for limiting outward movement of the bolt and said inner edge of each bolt having a notch therein for receiving a ward of a key, said notch being spaced rearwardly from the projection and said inner edge having a concave recess therein 1ocated between the notch and the projection, a bridge piece spanning the notch, a projection on they outer edge of each bolt located opposite the recess and having a straight rear wall forming a shoulder and a rounded front wall, upper and lower pawls pivoted in the casing between the bolts and the upper and lower side walls of the casing, a spring attached to each pawl and engaging a side wall of the casing and pressing the pawl against the rounded front wall of the projection when the bolt is retracted and `causing f the front end of the pawl to engage the straight

Images