US1074329A - Lock. - Google Patents

Description

' J. POTAPOPF.

V LOOK.

APPLICATION FILED FEB. 14, 1913.

Patented Sept. 30, 1913.

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LOCK.

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new and useful Improvements in" Locks, of

which the followingis -a specification, ref

erence being had to the accompanying d-raw ings;

This invention relates; to new and useful improvements in l-ocks andhas for=1ts primary object to providea lock,the tumblers and locking bolt ofwh-ich areboth operated;

through the medium of a compound key.

jected without changing the position of the tumblers.

A still further object of the invention is,

to provide a key, consisting of tumbler operating part, and of a locking bolt retracting part, and to. combinesuch partsin such a manner that they will not interfere with each other in their operation.

A further object of the invention is the operation of a lock ofthis'characterwhich will possess advantages in points. of efficiency and durability, is inexpensive of manufacture and at the same time is simple in construction and operation. 7

With the above and other objects in view the invention consists in the novel features of construction and the combination and arrangement of parts hereinafter more fully described, pointed out in the claims and shown in the accompanying drawings in which, 7

Figure 1 is a front elevation of a portion of a door having the invention applied thereto, the cover-plate being removed to disclose the interior mechanism of the lock. Fig. 2 is a sectional view on the line 22 of Fig. 1. Fig. 3 is a sectional view on the line 3-3 of Fig. 1. Fig. 4; is a detail perspective view of the combined key.

Referring more particularly to the drawings 1 indicates the lock casing, which may be of any suitable shape, but preferably of a rectangular form as shown in the drawings, and 2 indicates the cover-plate thereof, by the removal of which, access may be had to the interior mechanism of the lock. The

Patentedsept. 30, 119 1 3..

h pucauaa filed' February 14,1913. I serial: 1101 248,446;

ll'ock may be attached to the inner side of the door as shown in Fig. 1, or may be placed into a mortise formed in the door.

Arranged within the casing and adapted to entirely fill thesame are the blocks 3 and 4:, which are provided on one side with a longitudinal groove 5, adapted for the reception of the-locking bolt 6. Formed in and arranged at one end thereof, is the recess' 7, saldrecess extendi'ng inwardly and shallow recess 8. Opening into the recess 8 gis the semi-circular recess 9, which-com- Another object of the invention is to pro vide a lock of this character, the locking bolt of which may be retracted and prog municat'es with theusua-li key-hole 10.

Secured, to one side of the casing and ex- Etendfing'; inwardly in the recess 7 is a spacgi'ng block- 11, adapted to be arranged bej tween the sliding tumblers 12, said tumblersbeing arranged upon each side of the spacing block and disposed between the ends of springs. 14:, which are adapted to normally .hold the tumblers: into engagement with the 5 locking bolt 6. The locking bolt 6, is provided on one of its longitudinal edges with the spaced recesses 15 adapted to receive the beveled ends 16 of the tumblers 12 to hold the locking bolt in its projected position. Secured to the inner ends of the tumblers 12 is an actuating plate 17, which is beveled ofl on one of its edges to form an engaging surface 18.

In Fig. 4 is shown the combined key which comprises the main key 19 which consists of the stem 20 having a bit 21 formed upon one end and a handle member formed on the other end. Slidably mounted upon the stem 20 is a sleeve 23 which is provided at one end with a bit 24 and having a thumb plate 25 formed upon the other end whereby the same may be easily manipulated.

In Fig. 1 I have shown the lock applied to the inner side of the door, in order to unlock the same, the main key 19 is inserted in the key-hole and passed through until the bit 21 is arranged in the recess 9. The

key is then turned, the bit 21 engaging the one of the longitudinal edges of the blocks,

terminatin'ginto a substantially rectangular surface 18 of the plate 17- and forcing the tumblers 12 out of the recesses 15. The sleeve 23 is then inserted within the key opening, until the bit 24 is disposed above the locking bolt 6. The sleeve is then turned, until the bit 24: engages in one of the spaced recesses 26 formed in the locking bolt, the turning movement of the sleeve forcing the locking bolt inwardly, a second turn being necessary to retract the bolt so that its outer endis disengaged from the keeper 27, which is secured to the jamb of the door. In order to lock the door from the inside the operation as above described is simply reversed.

In order to unlock the door from the outside, the key 19 is inserted in the casing until the bit 21 is disposed above the locking bolt, the sleeve 23 is then inserted until the bit 24 engages with the surface 18 of the plate 17. The sleeve 23 is then turned, the bit 24 engaging the plate 17 to force the tumblers 12 out of the recesses 15, the key is then turned, the bit 21 engaging in the recesses 26 to retract the locking bolt, said key being turned twice around to entirely disengage the locking bolt from the keeper and to retract said bolt within the casing. It will be seen that when the locking bolt is in its projected position the inner ends of the tumblers 12 will be disposed in the recesses and held securely in place by the tension of the springs 14.

While I have shown and described the preferred form of my invention, it will be obvious that various changes in the details of construction in the portions may be resorted to for successfully carrying my invention into practice without sacrificing any of the novel features or departing from the scope thereof.

What I claim is A lock of the class described including a casing, a locking bolt arranged within said casing for sliding movement, blocks disposed within the casin and having longitudinal rooves formed therein to receive the locking bolt, said locking bolt being provided upon its longitudinal edges'with spaced recesses, said blocks being provided at their abutting ends with inwardly extending recesses and further provided with a shallow recess communicating with the first recess, a spacing block secured to one side of the casing and arranged within said recesses, said spacing block having spaced openings formed therein, sliding tumblers disposed upon each side of said spacing block and having beveled ends adapted to engage within the recesses in the locking bolt, springs having their intermediate portions arranged in the openings in the spacing block and their ends engaging the ends of the tumblers, an actuating plate connecting the inner ends of said tumblers and disposed in the shallowlrecess, one edge of said actuating plate being beveled off to provide an engaging surface and means en gaging said plate to disengagethe tumblers from the locking bolt and means cooperating with the first means to actuate the locking 7 bolt. 1

In testimony whereofI hereunto aiiiX my signature in thepresence of two witnesses.

, JOHN POTAPOFF. NVitnesses M. F. REIBIN,

E. N. VERIGINV Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

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