US1063703A - Alarm-signal. - Google Patents

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Classifications

• • G—PHYSICS
  • G08—SIGNALLING
  • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
  • G08B13/00—Burglar, theft or intruder alarms
  • G08B13/02—Mechanical actuation
  • G08B13/12—Mechanical actuation by the breaking or disturbance of stretched cords or wires
  • G08B13/126—Mechanical actuation by the breaking or disturbance of stretched cords or wires for a housing, e.g. a box, a safe, or a room

Definitions

• AMUND LEVORSEN OF LIGHTFOOT, VIRGINIA.
• the essential object in View is the effectual guarding of the property by apparatus which shall be simple and extremely cheap and at the same time perfectly effective.
• the invention comprises the combination of a fire-arm or other detonating device and apparatus disposed adjacent the guarded door or other entrance adapted to automatically discharge the detonating device on the approach of an unauthorized person.
• the invention comprises certain other novel constructions, combinations and arrangements of parts as will be hereinafter set forth and claimed.
• Figure 1 is a view partly in section and partly in elevation illustrating an embodiment of the present invention as positioned for guarding the door of a safe.
• Fig. 2 is a vertical section taken on the plane indicated by line 2-2 of Fig. 1 and looking in the direction indicated by the arrow, the parts being seen on an enlarged scale.
• 1 indicates a flooring and 2 the door of a bank safe or other safe. or, so far as the invention is concerned, the entrance to any container for valuables.
• a boxing 3 in which is arranged an upstanding bracket 4 which is rigidly fixed to the bot tom of the boxing 3 and has its upper or free end formed into a clamp 5 surrounding the grip of a pistol 6 or other detonating device.
• the pistol 6 is provided with the usual trigger 7 which is surrounded by an eye 8 of an operating plunger rod 9.
• the rod 9 extends through guiding brackets 10,
• actuating platform or plate 11 which is disposed in a recess in the floor 1 and arranged, when disposed in its operative position, to have its upper surface slightly above the upper surface of the floor so as to be depressed when subjected to the pressure of the foot of one walking on the floor 1.
• the eye 8 when the parts are in operative position, is adapted to rest upon the trigger of the pistol 6 and to sustain the plate 11 in its elevated position, the spring of the trigger being of sufficient strength to support the plate 11 without releasing the hammer of the pistol.
• the rod 9, as clearly indicated in Fig. 2, is preferably provided with a swivel connection with theplate 11, and the eye or loop 8 is disposed at one side of the rod so that the rod may be revolved from a position with the loop surrounding and resting upon the trigger of the pistol to a position at one side thereof, the latter position being indicated in dotted lines in Fig. 2.
• the plate 11 is apertured above the pistol for allowing of the free passage of the bullet.
• the box 3 may be disposed at any convenient point beneath the floor 1, either between the joist-s or below the same, and said box is provided with a door 12 which is hinged at one side of the box and provided with a lock 13 for retaining the door in closed position against unauthorized access to the interior of the box.
• a carpet or other covering may be disposed upon the floor and above the plate 11 without interfering with the operation thereof.
• the plate 11 When the loop 8 is removed from its engagement with the trigger and then released, the plate 11 will drop to a position with its upper surface flush with the upper surface of the floor, the plate being supported on suitable inwardly extending lugs projecting from the sides of the boxing 3, and in the evening when the operator restores the signal device to its guard condition he does so by slightly elevating the plate 11 and swinging the loop 8 back to a position resting upon the trigger of the pistol.

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• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Burglar Alarm Systems (AREA)

Description

Priority Applications (1)

Applications Claiming Priority (1)

Publications (1)

Family

ID=3131949

Family Applications (1)

Country Status (1)

Cited By (2)

• 1913
  • 1913-01-27 US US74456913A patent/US1063703A/en not_active Expired - Lifetime

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