UNT Libraries Government Documents Department - 39 Matching Results

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Annuciator

Description: Patent for an annunciator. "This invention is designed for use in connection with a complete traction system" (lines 13-14). The design drives instruments via a train air system so that air pressure is constantly maintained. Illustrations included.
Date: February 18, 1908
Creator: Mayo, William C.; Houlehan, John & Briggs, George E.
Item Type: Refine your search to only Patent

Aparejo

Description: Patent for more efficient and durable pack-saddle (aparejo) used by United States Army. Casing involves hollow boot-sticks and rubber-encased steel, with better fitting to prevent fatigue of animal.
Date: February 11, 1902
Creator: Keller, John & Titsworth, Richard
Item Type: Refine your search to only Patent

Automatic Multiple Fuse Block

Description: Patent for an automatic multiple fuse block. This invention is "provided a normally inactive shunt circuit through which, when a fuse is blown, the current is diverted to an electro-mechanical means which, when the rush of current causing the fuse to blow" (16-21). Illustration included.
Date: February 18, 1908
Creator: Mayo, William C.; Houlehan, John & Briggs, George E.
Item Type: Refine your search to only Patent

Bicycle.

Description: Patent for a bicycle that is safer than other bicycles. It has compensating gearing so that "the variations in leverage in the various positions assumed by the pedal crank are equalized" (lines 12-13).
Date: February 20, 1894
Creator: Lillibridge, Freeman
Item Type: Refine your search to only Patent

Bridle-Rod for Railroad Rails

Description: Patent for a system of attaching railroad rails when the rails are first placed. This device is used to keep the rails a precise distance apart before the railroad spikes are placed into the ground holding the rails firmly in place.
Date: February 10, 1903
Creator: Johnson, John
Item Type: Refine your search to only Patent

Car-truck.

Description: Patent for trucks for railway-cars "of simple and durable construction the parts of which are connected together without the use of bolts" (lines 10-12).
Date: February 26, 1901
Creator: Rouy, Gustave
Item Type: Refine your search to only Patent

Car-Wheel

Description: Patent for a car wheel made to ease turning on rounding corners and to prevent slipping due to differences in wheel sizes.
Date: February 18, 1908
Creator: Mayo, William C. & Houlehan, John
Item Type: Refine your search to only Patent

Filter.

Description: Patent for a new and improved filter. This design is for "[a] filter consisting of sections secured together at their meeting edges by a lapped joint, the upper edge of [a] section being fitted wholly within [another] section and forming a shoulder for the support of a screen-plate, and the body of filtering material above, a shoulder on [a] section below [the] shoulder, and screen plates resting on and held to the shoulders by the weight of the body of filtering material, whereby, when the fil… more
Date: February 15, 1887
Creator: Begemann, Charles Fredrich William
Item Type: Refine your search to only Patent

Lock-Nut.

Description: Patent for a lock-nut which prevents the nut from accidentally rotating on the bolt, including illustrations. The nut is locked in position when a locking key is introduced to grooves on the lower surface of the nut and the adjacent face of the washer.
Date: February 13, 1906
Creator: Crawford, Hezekiah H.
Item Type: Refine your search to only Patent

Metallic Roof.

Description: Patent for a metallic roof in which section edges are secured so that they do not become disconnected, intentional bracing prevents sagging, and securing the roof does not require the use of nails, which prevents leaks.
Date: February 21, 1922
Creator: Crawford, Hezekiah H.
Item Type: Refine your search to only Patent
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