US380537A - tayloe - Google Patents

Description

(No Model.) I

W. H. TAYLOR.

LOOK. No. 380,537. Patented Apr. 8, 1888.

WITNESSES I v INVENTOR 6 WWW W'crrenfi". Taylor, LP

By flttorneys,

UNrrED STATES Farnnrr rrrcni \VARREN H. TAYLOR, OF STAMFORD CONNECTICUT, ASSIGNOR TO THE YALE 7 & TOXVNE BIIANUFACTURING COMPANY, OF SAME PLACE.

LOCK.

SPECIFICATION forming part of Letters Patent No. 380,537, dated April 3, 1888.

Application filed November 14, 1887. Serial No. 255,089, (No model.)

To all whom it may concern: My invention consists in the special means Be itknown that I, VVA'RREN H. TAYLOR, of of fastening an escutcheon within the interior Stamford, in the county of Fairfield and State of a lock, as hereinafter specified, and sucof Connecticut, haveinventedacertain new and cinct-ly summed up in my appended claim.

5 useful Improvementin Locks, of which the fol- In the accompanying drawings, Figure lis 55 lowin is a specification reference bein had a view of a lock containin m in] movement a: 1 a 3 l to the accompanying drawings. one plate ofthe lock being removed; and Fig.

Myinvention relatesparticularlyto thatclass 2 is a detail view of my invention detached of locks in which the tumblers are contained from a lock.

[C in aseparate escutcheon or tumbler-case-such, Referring to the letters upon the drawings, 5 for instance, as the well-known Yale looks; A indicates a lock'case, B a lock-bolt, and C and it has for its object the prevention of the a screwthreaded escutcheon set into the case removal of this escutcheon or tumbler-case, exin the usual way. cept by one who is in possession of the key for D indicates a set-screw, and E a forked slide 1 unlocking the lock, and who, therefore, may adapted to enter the grooves in two opposite 6 be presumed to have the right to remove the escutcheons and hold them in place. escutcheon. The usual method of fastening an The devices thus far described are all old. escutcheon in place is by means of a set-screw Coming to what is new, I provide the ordipassing through the face .of the lock and ennary set-screw fastening, F, and on it a pro- 2c gaging with a groove or other depression in jection, G. 70

the periphery of the cscutcheon, so that when H indicates a bell-crank lever pivoted at I,

the set-screw is turned out the escutcheon can and serving to throw the bolt into the unlocked be removed. There are also other methods of position against its spring when it is operated fastening in the escutcheon; but heretofore by means of the ordinary cam, K, upon the locks have been so constructed that when the key-hub X, as will be obvious from the drawdoor was open and the face-plate accessible ings. This bell-crank is provided withashoulany person with a screw-driver or the point der, L, which engages with the projection G,

of a knife could release the set-screw or other forming a latch-connection, thus securely dogstop, so that the cscutcheon could be unging the set-screw fastening. This bell-crank o screwed or otherwise removed. If such per levcris provided with aspring, M, which tends 8o son desired to efiect an entrance to the room or to keep it all the time in the position indicated house, he could release the set-screw or other by the full lines in Fig. 2, in which position stop sufficiently, so that while the turning of it is latched with the projection G upon the the key to throw the bolt would not turn the setscrew fastening for the escutcheon. When 35 e cutcheon, the escutcheon could be turned by the key is inserted and the hub turned, it will 25 the application of slight force. Then, after the release the latch connection and throw the owner had left the door locked, as he supbell-crank lcverinto the position shown by the posed, the evil-disposed person could return dotted lines in Fig. 2, and thus release the setand unscrew the escutcheon, or otherwise rescrew fastening of the escutcheon, so that it 0 ve it, and have access to the interior of the can be withdrawn and the escutcheon removed. 0

so that he could unlock it. My inven- At all other times the spring will keep the belltl removes this source of weakness and procrank lever latched with this projection of the vides a fastening for the escutcheon in the inset-screw fastening, so that it cannot be withterior of the lock which can only be released drawn and the escuteheon cannot be removed;

5 by means of the proper key acting through the henceitbecomcsirnpossible to releaseand with- 5 escutcheon itself. It is evident that if any one draw the escutcheon, except by the use of the has the proper key to the lock he can gain ackey to unlatch the internal set-screw fastening.

cess to the room, and so will have no object, This invention is adapted to ,be used with except a proper one, in removing the cscutchnumerous varieties of locks having escutch- 50 con. eons or tumbler-cases of similar nature. [09

The combination, in a lock having an escutcheon and set-screw fastening therefor, of

a projection, G, on'the set-screw fastening, a :5

spring actuated bell-crank lever, H, and a shoulder, L, on the bell-crank, forming alatch: connection, substantially as set forth.

In testimony whereof I have hereunto sub= scribed my name.

WARREN H. TAYLOR. 1 Witnesses:

SOHUYLER MERRITT, E. D. -OGDEN.

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