US242030A - osterberg - Google Patents

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Publication number
US242030A
US242030A US242030DA US242030A US 242030 A US242030 A US 242030A US 242030D A US242030D A US 242030DA US 242030 A US242030 A US 242030A
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United States
Prior art keywords
key
shield
stud
fastener
screw
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B13/00—Devices preventing the key or the handle or both from being used
    • E05B13/04—Devices preventing the key or the handle or both from being used shaped as fork-like implements grasping and fixing the key or a handle, e.g. a thumb-turn
    • 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
    • Y10T70/7989—Key securers, fasteners or retainers
    • Y10T70/7994—Portable

Definitions

  • Its purpose is to prevent a key, when in the key-hole of the lock of a door, from being revolved by pliers or forceps applied to it from the outer side of the door.
  • A denotes the clamp
  • B the stud, such clamp consisting of two jaws, a b, an operating-screw, c, and a shield, cl.
  • the said shield is in one piece with the fixed jaw b, through which the thumb-screw c is screwed against the longer arm of the other or movable jaw, a.
  • This latter jaw arranged against the inner face of the shield, is fulcrumed thereto or turns on a pin, e, extending from it.
  • the stud B projectsfrom thefrontface of the shield in manner as shown.
  • the shield not only answers as a support for the stud B and the fulcrum of the movable jaw, but as a means of so covering the arm of the latterjaw and the operating-screw of such arm as [0 prevent them from being reached by an im plement inserted through the key-hole for the purpose of breaking the jaw or its screw.
  • the stud B In using the key-fastener it is to be clamped to the shank of the key when such key may be in its lock, the stud B at the time being extended into the key-hole, which will be nearly, it not entirely, covered by the shield. The stud will prevent the key from being revolved.
  • a key-fastener consisting simply of a clamp to fasten a key-shank, and of a projection to extend from such clamp into a key-hole when the key is in such key-hole, is not new, and therefore is not claimed broadly by me.
  • the key-fastener constructed substantially as described, consisting of the fixed jaw 12, shield d, stud B, thumb-screw c, and the movable jaw or jawed lever a, all arranged and adapted essentially and to operate as set forth.

Description

(No Model.)
' A. F. S. OS'I'ERBERG.
Key Fastener.
No. 242,030. Patented May 24,1881.
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UNITED STATES PATENT OFFICE.
AUGUST F. S. OSTERBERG, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO HIMSELF AND OLOF P. ANDERSON, OF SAME PLACE.
KEY-FASTENER.
SPECIFICATION forming part of Letters Patent No. 242,030, dated May 24;, 1881.
Application filed March 10, 1880. (No model.)
To all whom it may concern:
Be it known that I, AUGUST F. S. OSTER- BERG, of Boston, of the county of Suffolk and State of Massachusetts, have invented a new and useful Improvement in Key -Fasteners; and I do hereby declare the same to be described in the following specification and represented in the accompanying drawings, of which- Figures 1 and2 are opposite side views, and Fig. 3 an edgeeevation, ofa fastener of my invention.
Its purpose is to preventa key, when in the key-hole of the lock of a door, from being revolved by pliers or forceps applied to it from the outer side of the door.
It consists of ajawed lever, a stationuryjaw, a clamp-screw, a shield, and a projection, constructed, arrangerhand combined substantially as represented, and hereinafter described.
In the drawings, A denotes the clamp, and B the stud, such clamp consisting of two jaws, a b, an operating-screw, c, and a shield, cl. The said shield is in one piece with the fixed jaw b, through which the thumb-screw c is screwed against the longer arm of the other or movable jaw, a. This latter jaw, arranged against the inner face of the shield, is fulcrumed thereto or turns on a pin, e, extending from it. The stud B projectsfrom thefrontface of the shield in manner as shown.
From the above it will be seen that the shield not only answers as a support for the stud B and the fulcrum of the movable jaw, but as a means of so covering the arm of the latterjaw and the operating-screw of such arm as [0 prevent them from being reached by an im plement inserted through the key-hole for the purpose of breaking the jaw or its screw.
In using the key-fastener it is to be clamped to the shank of the key when such key may be in its lock, the stud B at the time being extended into the key-hole, which will be nearly, it not entirely, covered by the shield. The stud will prevent the key from being revolved.
A key-fastener consisting simply of a clamp to fasten a key-shank, and of a projection to extend from such clamp into a key-hole when the key is in such key-hole, is not new, and therefore is not claimed broadly by me.
What I claim as my invention is as follows:
The key-fastener constructed substantially as described, consisting of the fixed jaw 12, shield d, stud B, thumb-screw c, and the movable jaw or jawed lever a, all arranged and adapted essentially and to operate as set forth.
AUGUST F. S. OSTERBERG. Witnesses:
R. H. EDDY, E. B. PRATT.
US242030D osterberg Expired - Lifetime US242030A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5000498A (en) * 1990-08-03 1991-03-19 Upchurch Lewis E Interior deadbolt knob fastening apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5000498A (en) * 1990-08-03 1991-03-19 Upchurch Lewis E Interior deadbolt knob fastening apparatus

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