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Process of Making Electric Gold Pictures

Description: Patent for a "process whereby pictures may be reproduced on any hard white surface" (lines 22-23) by treating the surface so gold adheres to it, with description of process.
Date: November 8, 1887
Creator: Tucker, Argyle W. & Tucker, Elihu M.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Electric Arc Lamp.

Description: Patent for a new and improved electric-arc lamp. This design consists in "the combination of a single horseshoe electro-magnet in the circuit of a main line, connected on the positive side to a binding-post having shunt material as a bushing around it, an armature hinged at its center and free to vibrate throughout its length with a carbon-rod holder, which it is adapted to clutch at the hinged part, said magnet acting upon the ends of the armature only, and an adjustable trip and limiting-stop… more
Date: March 8, 1887
Creator: McDill, Henry C. & Gaston, James E.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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