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Burglar-Alarm

Description: Patent for a burglar alarm that can be attached to a car door. Illustrations included.
Date: October 8, 1912
Creator: Halstead, Thomas J.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Burglar-Alarm

Description: Patent for "a very simple and economically-constructed alarm mechanically connected with windows and doors of a house or a room and adapted to be sounded by a raising or opening of the same, and at the same time to strike a light or illuminate the surroundings (lines 10-15).
Date: October 7, 1890
Creator: Canterbury, Crawford R.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Lock

Description: Patent for "improvements in locks, having special reference to locks for the doors of freight-cars; and it has for its object to provide a strong lock so constructed as to be comparatively safe from the attacks of lockpickers" (lines 8-13).
Date: September 11, 1888
Creator: Bergman, John
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Lock.

Description: Patent for an invention that relates to locks. "The prime object of the invention is to provide a supplemental locking device for the holding element, which is entirely separate from the usual locking mechanism, so that should one unacquainted with the lock attempt to open it in the ordinary manner by operating said usual mechanism the holding element will still be securely locked and the attempt would thus be frustrated." (Lines 14-21) Illustration is included.
Date: November 26, 1901
Creator: Rodrigo, Hendrick
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Switch Stand and Lock

Description: Patent for an improvement in switch-stand and locks, being that they cannot be picked or tampered with.
Date: July 21, 1914
Creator: Maupin, John D.; Allen, Harry E. & Baldwin, Springfield
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Protecting Alarm-Circuit.

Description: Patent for a circuit to be connected to a security alarm so that when the circuit is broken, the alarm will sound. Includes instructions and illustrations.
Date: October 12, 1897
Creator: Barriclow, Irvin E.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Gate

Description: Patent for "a farm-gate that may be opened and closed from either side of the gate by a person mounted on horseback, or by a person in a vehicle, without its being necessary in either instance for the person to dismount or alight" (lines 18-22).
Date: July 23, 1889
Creator: Bradley, William F.
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Partner: UNT Libraries Government Documents Department

Recording Door-Lock

Description: Patent for "a continuous-recording lock suitable for bonded warehouses, factories, stores, public buildings, offices &c., and by a slight modification applicable, also, for private residences" (lines 7-11).
Date: January 1, 1889
Creator: Ferguson, George J.
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Partner: UNT Libraries Government Documents Department

Safe.

Description: Patent for "safes which are made burglar and if desired, fire proof without increasing weight and cost ofthe same, reliance for security being placed upon the release or discharge of condensed gases, liquefied or not, and contained within the walls of the safe in such manner as that any attempt to force the safe will break the walls of the containing-chamber and release the fluid, said fluid or gases being of a deadly character, whereby persons or animals are compelled to flee from the vicinity… more
Date: January 6, 1891
Creator: Payne, John J. E. H.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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