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Electric Switch

Description: Patent is for electric switch that minimizes other phone interference and limits each call to a single caller on the line. Two lines can be connected to the switch.
Date: December 4, 1917
Creator: Teare, J. W.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Covering-Machine.

Description: Patent for certain new and useful improvements in rag joiners, including instructions and illustrations.
Date: July 4, 1899
Creator: Vining, Lucinda
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Acetylene-Gas Generator.

Description: Patent for an acetylene-gas generator that consists of “a suitable frame, a receptacle positioned within said frame, and a gas-bell” (lines 11-13), as well as a gasometer and carbide feed. As a result, the gas generator “will continually furnish dry, cool gas and at a substantially even pressure at all times” (line 22-24). Illustrations included.
Date: June 4, 1907
Creator: Hays, Parx Orr
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Govering-Machine.

Description: Patent for certain new and useful improvements in rag joiners, including instructions and illustrations.
Date: July 4, 1899
Creator: Vining, Lucinda
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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