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Paper-Guide

Description: Patent for a paper guide for paper and carbon paper for typewriters.
Date: October 8, 1912
Creator: Davis, Alice Urilla
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Triple Valve

Description: Patent for a triple valve for air brakes on trains that gives the engineer more control over the brakes.
Date: August 13, 1912
Creator: Anderson, Williamson D. & Shearer, Edward J.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Pulverizer.

Description: Patent for pulverizer that reduces solid or liquid fuel while simultaneously mixing the finely divided material with an oxidizing agent and holding the mixture in suspension, producing a highly combustible mechanical mixture for use in furnaces, gas producers, and other similar apparatus that is more desireable to use finely divided fuel.
Date: September 17, 1912
Creator: Hirt, Jules H.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Switch-Stand

Description: Patent for a switch stand with a switch signal light to indicate whether a railroad switch is open or closed.
Date: November 12, 1912
Creator: Phillips, Smith F.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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