US1380503A - Lock - Google Patents

Description

D. P. SLIND.

LOCK.

APPLlcATloN FILED SEPT. a. |920.

' Patented June 7, 1921.

DONALD P. SLIND, OF RYLEY, ALBERTA, GANADA.

Loon.

Specication of Letters Patent.

Patented June 19121.

Application filed September 8, 1920. Serial No. 408,861.

T 0 all whom t may concern Be it known that I, DONALD, P. SLIND, a citizen of Canada, residing at Ryley, Province of Alberta, and Dominion of Canada, have invented certain new and useful improvements in Locks, of which the following is a specification.

IThis invention relates to improvements in locks, particularly so-called cylinder locks, and it is the object of the vinvention to provide a lock of this type of an extremely simple and therefore inexpensive construe tion.

A further object of the invention is to provide a lock of this type having a bolt moving on the arc of a circle into and out of its locking position.

Other objects and advantages of the invention will become apparent as the description proceeds and will be more clearly set forth in the appended claims.

1n the accompanying drawing, forming a material part of this invention, a preferred form of my invention is illustrated and in this drawing- Figure 1 is a sectional front elevation of a lock constructed according to the present invention.

Fig. 2 is a side view thereof partly in section on line 2-2 of Fig. 1 with the locking bolt in open position as seen in dotted lines in Fig. 1, and

Fig. 3 is a section taken on line 3 3 Fig. 1.

Fig. 4 is a detail view of the spring arrangement of the lock.

The casing 10 adapted to be secured to a door 11 by means of screws 12 or the like has an opening 13 in one of its side walls through which the locking bolt 14 swings outwardly which is pivotally secured on a pin 15 in a bracket 16 secured to the inner wall of the casing. The bolt 14 is provided at its lower end with a shoulder 17 having a recess or cam face in its front end for engagement by the rear, or bolt operating end of a key 18. In the jamb 19 of a door, a casing 20 is provided as shown in Fig. 1 having end flanges 21 and 22 adapted to be secured to the edge of the jamb by screws 23 or the like, and provided with an opening 24 in said edge for the passage of the locking bou, il. i c Y Within the casing 10 a block 25 is secured by screws 26 and a chamber 27 in this block contains a predetermined number of strong, Vshort springs 28, for instance as shown by way oi' example three of such springs, the upper ends o1 which are secured to bolts29 passed through the upper wall of the chamber. When the lock is closed, the lower ends of these strong springs 28 which as shown in Fig. 4 are provided with pins 28 and which are o1 unequal lengths, enter a recess 30 in a rotatable barrel 31 of a form ilustrated in Fig. 1, to a depth which is governed by the length of the springs 28 and hold this barrel 31 immobile in the outer stationary ylinder 32. wW hen the key 18 is inserted into the recess 80 or keyhole, it lii'ts the springs one after another, and when itis all the way in, the projections or protuberances 33 of the key will hold all the springs in the chamber 27, and barrel and bolt can be turned bythe key to open or close the lock.

lt will be clear that the number of springs may be changed as well as their length, and that the system is thus capable of an infinite number of combinations, for the proj ections may be provided on the key in any desired way and the springs regulated to lit them or vice versa. rEhe keys can be made absolutely individual and their cross-sed tion may be made to lit the recess 30 or they may be made with straight cross-section. r1`hey may also be provided at their sides with guide grooves corresponding to similar guide ribs or ridges in the barrel.

Having thus described my invention what l claim as new and desire to secure by Letters Patent of the United States ism 1, In a lock orn the character described, the combination of a casing, a locking bolt pivotally arranged within said casing, a block provided with a chamber, a plurality of springs in said chamber, a recessed barrel into the recess oit which the lower ends of said springs project, and a key provided with projections of a number and size adapted to gradually, push said springs into their chamber for allowing a rotation of said barrel and bolt by said key.

2. ln a lock of the character described, the combination of a casing adapted to be secured to a door, and having an opening in its side, a locking bolt pivotally secured within said casing and adapted to be swung through the opening in said side into a keeper in the amb of the door, a stationary cylinder, a rotatable, recessed barrel within said cylinderprovided with a keyhole, a

block secured between the side walls of said casing and having an inner chamber, a predetermined number of springs secured with their upper ends to the roei' of said chamber and projecting with their lower ends to diiierent depths into the recess ot said barrel, a key provided with projections 01"' a number and size corresponding to the number and size of the springs, said springs adapted to be engaged by corresponding higher or lower projections ot said key when introduced through the key-hole.

3. ln a locl ci the character described, the coi'ebination of a door and its jamb with 'a casing secured in said door, and a casing secured in the j amb, both casings provided with lateral openings in alinenient with each other, and a locking bolt pivoted within the door casing and adapted to be swung through the side opening of the door casing and the side opening of the jamb casing into and out ot the latter, a shoulder on said bolt, and a cam tace on said shoulder adapted to be engaged by the end ot a key, and means for allowing the introduction of the key for the operation of said bolt ii the number and shape ot its projections corresponds to the predetermined number and length of a means for normally holding the lock closed. el.. ln a lock of' the character described, the combination of a casing and a pivotally arranged bolt within said casing of a cam face on said bolt adapted to be engaged by the end of a key, a stationary cylinder, a recessed and rotatable barrel in said cylinder, a block in said casing provided with a chamber, a predetermined number' oi strong springs in said casing having ,varying length and extending with their lower ends correspondingly deeper or less deep into the recess of said barrel, said lower ends adapted to be engaged by the projections of a key corresponding in height and in their spaced relation to the arrangement of said springs for pushing said springs into their chamber and allowing a passage of the key and a rotation of the barrel for the operation of said belt to lock and unlock the lock. ln testimony whereof l have affixed my signature.

DONALD rf. snmp.4

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