UNT Libraries Government Documents Department - 29 Matching Results

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Car-Brake

Description: Patent for "new and useful Improvements in Car-Brakes" (lines 6-7) relating to a railroad brake operating mechanism, including instructions and illustrations.
Date: February 6, 1912
Creator: Klasing, Augustus Frederick
Item Type: Refine your search to only Patent

Door Operating Means

Description: Patent for a mechanism to operate jail doors. The mechanism is "operated with a single movement of the hand to open and close a plurality of doors simultaneously" (14-19). Illustrations included.
Date: June 25, 1912
Creator: Youngblood, David Franklin
Item Type: Refine your search to only Patent

Electric-Lamp Attachment.

Description: Patent for an electric-lamp attachment, "the primary object of this invention being the provision of a lamp socket attachment of supporting means in combination with a switch, whereby the current energizing the filament of an incandescent lamp is so controlled as to produce different degrees of incandescence in the filament and thus produce different degrees of radiance to produce a dim or a highlight as may be desired" (lines 9-18). Illustrations included.
Date: April 23, 1912
Creator: McNeel, William Pinkney
Item Type: Refine your search to only Patent

Gate

Description: Patent for a gate. This invention allows a movable gate to hang on ball bearing hangers without sagging. Illustrations included.
Date: December 3, 1912
Creator: Wade, William & Peterson, Mack C.
Item Type: Refine your search to only Patent
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