US478982A - Franz f - Google Patents

Franz f Download PDF

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Publication number
US478982A
US478982A US478982DA US478982A US 478982 A US478982 A US 478982A US 478982D A US478982D A US 478982DA US 478982 A US478982 A US 478982A
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Prior art keywords
franz
jaws
levers
alarm
spindle
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Expired - Lifetime
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    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B45/00—Alarm locks
    • E05B45/02—Alarm locks with mechanically-operated bells

Definitions

  • FRANZ F. BOEGNER, OF NEW YORK, N. Y.
  • This invention relates to an alarm adapted to engage the spindle of a door-latch and to be sounded by the turning of the door-knob.
  • Figure 1 is an elevation of my improved alarm; Fig. 2, an end view thereof; and Fig. 3, a cross-section on line a: 00, Fig. 1.
  • the letters a a represent two converging levers turning on pivots a of a pair of crossarms I) and terminating on top in a pair of semicircular jaws a
  • These jaws are held against the spindle o of the door-latch by a curved spring 01, that bears with its ends against the free ends of the levers a.
  • the spring (1 is coiled around a pin 19, passing through the center of arms (7. From this pin there is suspended by a forked stem f a bell f, having the usual hammer f.
  • the jaws a may be provided with a suitable cushion or packing 6.
  • lVhat I claim is The combination of a pair of converging levers a, having concave jaws M, with the connecting-arm b, to which the levers are pivoted, a spring d for forcing the jaws a together, and a bell f, suspended from the connectingarm, substantially as specified.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Burglar Alarm Systems (AREA)

Description

(No Model.)
P.F.BOEGNBR.
ALARM.
No. 478.982. Patented Jul 19, 1892.
@M BY QZWM A TTOHNE YJ'.
UNITED STATES ATENT GFFIGE.
FRANZ F. BOEGNER, OF NEW YORK, N. Y.
ALARM.
SPECIFICATION forming part of Letters Patent No. 478,982, dated July 19, 1892.
Application filed April 1,1892- Serial No. 427,326. (No model.)
To ail whom it may concern:
Be it known that I, FRANZ F. BOEGNER, of New York city, New York, have invented an Improved Alarm, of which the following is a specification.
This invention relates to an alarm adapted to engage the spindle of a door-latch and to be sounded by the turning of the door-knob.
It consists in the various features of improvement more fully pointed out in the claim.
In the accompanying drawings, Figure 1 is an elevation of my improved alarm; Fig. 2, an end view thereof; and Fig. 3, a cross-section on line a: 00, Fig. 1.
The letters a a represent two converging levers turning on pivots a of a pair of crossarms I) and terminating on top in a pair of semicircular jaws a These jaws are held against the spindle o of the door-latch by a curved spring 01, that bears with its ends against the free ends of the levers a. The spring (1 is coiled around a pin 19, passing through the center of arms (7. From this pin there is suspended by a forked stem f a bell f, having the usual hammer f. The jaws a may be provided with a suitable cushion or packing 6. Normally the bell hangs in line vertically below the spindle 0; but when the spindle is revolved by either one of its knobs c the levers a, which are tightly held thereto, will assume an inclined position. This will cause the hammer f to be thrown against the bell, so as to sound the same.
lVhat I claim is The combination of a pair of converging levers a, having concave jaws M, with the connecting-arm b, to which the levers are pivoted, a spring d for forcing the jaws a together, and a bell f, suspended from the connectingarm, substantially as specified.
FRANZ F. BOEGNER.
Witnesses:
F. v. BRIESEN, A. J ONGHMANS.
US478982D Franz f Expired - Lifetime US478982A (en)

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US478982A true US478982A (en) 1892-07-19

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070101923A1 (en) * 2005-02-28 2007-05-10 Cheryl Pedersen Poochie-bells

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070101923A1 (en) * 2005-02-28 2007-05-10 Cheryl Pedersen Poochie-bells

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