US275553A - Key-hole guard - Google Patents

Key-hole guard Download PDF

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Publication number
US275553A
US275553A US275553DA US275553A US 275553 A US275553 A US 275553A US 275553D A US275553D A US 275553DA US 275553 A US275553 A US 275553A
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United States
Prior art keywords
key
guard
plate
lever
bolt
Prior art date
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Expired - Lifetime
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B17/00—Accessories in connection with locks
    • E05B17/14—Closures or guards for keyholes
    • E05B17/142—Closures or guards for keyholes with key-operated locks, e.g. padlocks
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00—Locks
    • Y10T70/70—Operating mechanism
    • Y10T70/7441—Key
    • Y10T70/7915—Tampering prevention or attack defeating
    • Y10T70/7955—Keyhole guards
    • Y10T70/7977—Key-controlled

Definitions

  • JOSEPH WARNER OF HARTFORD, CONNECTICUT, ASSIGNOR OF ONE HALF TO ADALBERT J. WARNER, OF CHICAGO, ILLNOIS.
  • Figure l is a view ofthe front side'of a mortse-lock bearing my improvement, meaning lby front side7 that side which faces the outside of the room when the lock is set into a room-door.
  • Fig. 2 is a view of the same lock from the same side with the front plate removed.
  • Fig. 3 is an edge view of said front plate.
  • Fig. et is a rear view of said front plate.
  • Fig. 5 is a view of the key.
  • the look is one which bears on the front a guard-plate capable of reciprocating motion, which is not operated when the lock is operated by inserting the key from the front, but which is moved over the key-hole when the bolt is thrown into locked 7 position with the. key inserted from the rear, and vice versa, so that a person entering his room and locking his door by the same act moves a guard-plate over the key-hole on the outside.
  • the letter a denotes thelock-case; b, the removable front plate thereof; c, the bolt, appurtenant to which there may be the usual appliances of tumblers,springs, &c.
  • a reciprocating guard-plate d which covers or uncovers the key-hole e, according as it is at one end or the other of its play. It may be kept to its seat by the headed rivet f, moving in the mortise g.
  • a pin, h practically integral with the guard-plate, plays in this same mortise and because the key is so formed that when inu serted from the rear it will Ilot in operation raise the pawl j sufficiently to disengage the slot m from the lever yi.
  • guard-plate d and the key o, formed to dis-v engage the slots from the lever when inserted from one side only, substantially as described.

Description

(Model.) I .JR` WARNER.
KEY HOLE GUARD.
No.'275,553. Patented Apr. 10,1883.
, Fig/3.'
N. FEIERS. Pham-limogmpmr. wnhingmn. D. c.
- UNITED STATES PATENT OFFICE.
JOSEPH WARNER, OF HARTFORD, CONNECTICUT, ASSIGNOR OF ONE HALF TO ADALBERT J. WARNER, OF CHICAGO, ILLNOIS.
KEY-H OLE GUARD.`
SPECIFICATION forming part of Letters Patent No. 275,553, dated April 10, 1883.
Application tiled August 6, 1881. (Model.)
being had to the accompanying drawings,
Vlo
where- Figure l is a view ofthe front side'of a mortse-lock bearing my improvement, meaning lby front side7 that side which faces the outside of the room when the lock is set into a room-door. Fig. 2 is a view of the same lock from the same side with the front plate removed. Fig. 3 is an edge view of said front plate. Fig. et is a rear view of said front plate. Fig. 5 is a view of the key.
The look is one which bears on the front a guard-plate capable of reciprocating motion, which is not operated when the lock is operated by inserting the key from the front, but which is moved over the key-hole when the bolt is thrown into locked 7 position with the. key inserted from the rear, and vice versa, so that a person entering his room and locking his door by the same act moves a guard-plate over the key-hole on the outside.
The letter a denotes thelock-case; b, the removable front plate thereof; c, the bolt, appurtenant to which there may be the usual appliances of tumblers,springs, &c. Ou the outside ot' the front plate, b, there is a reciprocating guard-plate d, which covers or uncovers the key-hole e, according as it is at one end or the other of its play. It may be kept to its seat by the headed rivet f, moving in the mortise g. A pin, h, practically integral with the guard-plate, plays in this same mortise and because the key is so formed that when inu serted from the rear it will Ilot in operation raise the pawl j sufficiently to disengage the slot m from the lever yi. that when inserted from the front it in operation raises pawl j so that slotm is disengaged from lever t', leaving the lever and guard-plate stationary while the bolt reciprocates. When the bolt is thrown into the locked position with the key inserted from the front, the top of lever t' sinks into slot n, and when the operation is reversed the top of lever t' again sinks into slot m.
1. The combination ot' the bolt c, the pawl j, provided with the slot m, the lever z', and the guard-plate d, all substantially as described, and for the purpose set forth.
2. The combination of the bolt c, the pawl j, provided with the slots m it, the lever fi, the
guard-plate d, and the key o, formed to dis-v engage the slots from the lever when inserted from one side only, substantially as described.
JOSEPH WARNER.
Witnesses:
GHAs. L. BURDETT, W. E. SnvroNns.
The key ois so formed
US275553D Key-hole guard Expired - Lifetime US275553A (en)

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US275553A true US275553A (en) 1883-04-10

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