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Telltale Switch

Description: Patent for switch that indicates when a vacuum fails. Used for systems in "which it is desired to keep a ... uniform vacuum such as in fruit dryers, creosoting plants, surgace and jet condensing for steam plants and the like" (lines 21-25).
Date: March 23, 1915
Creator: Howland, John
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Hose-Washer.

Description: Patent for improvement in efficiency of hose washers. Patent helps to prevent accidental detachment of a hose via the use of a "resilient wire" designed to strengthen the connection. Citation: Calvert, Walter Riley. Hose-Washer., patent, April 27, 1915; [Washington D.C.]. University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; crediting UNT Libraries Government Documents Department.
Date: April 27, 1915
Creator: Calvert, Walter Riley
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Plate for Secondary Batteries.

Description: Patent filed by Joseph O. Luthy, a citizen of the Republic of Switzerland, residing in the city of San Antonio, concerning new and useful improvements in placates for secondary batteries. Figures page 1. Description of patent begins page 2.
Date: June 15, 1915
Creator: Luthy, Joseph O.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Nut-Lock.

Description: Patent for "new and useful Improvements in Nut-Locks" (lines 5-6). "This invention relates to improvements in nut locks. The principal object of the invention is to provide a novel and efficient device for locking a nut on the end of an axle shaft or the like" (lines 12-17).
Date: December 7, 1915
Creator: Best, Eben
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Spring-Wheel.

Description: Patent for an improved spring wheel "which may replace the inelastic wheels commonly used in connection with automobiles, and which are usually made of wood" (lines 10-13) including illustrations.
Date: June 15, 1915
Creator: Gebhardt, William
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Flash-Light

Description: Patent for flashlights to provide certain new and useful improvements designed and adapted for use in the handles of umbrellas, canes, and the like. The invention comprises a metallic tube or sleeve adapted to be inserted into a bore of an umbrella handle or sleeve having an enlargement in which a bulb carrier is mounted and over the end of the lens. The configuration will not interfere with the free use of the handle. There is a special construction of the circuit closer to the metallic sleev… more
Date: August 24, 1915
Creator: Matthies, Gustav & Rehberg Jr., August
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Flexible Joint

Description: Patent for a flexible joint provides "an improved and simplified device that is simple, durable and reliable in construction and effective and efficient in operation" (lines 10-13).
Date: November 16, 1915
Creator: Mooney, Thomas H.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Sash-Holder.

Description: Patent for "new and useful Improvements in Sash-Holders" (lines 5-6). "My invention relates to sash holders... and the object of my invention is to so change the construction of said patented sash holder as to simplify, cheapen and otherwise improve the same" (lines 13-19).
Date: December 7, 1915
Creator: Hart, Joel T.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Air-Compressing Apparatus.

Description: Patent for a new air compressing apparatus which employs two kinds of tanks called high pressure containers and low pressure containers charged by means of an air compressing engine.
Date: March 16, 1915
Creator: Gebhardt, William Charles
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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