Texas Patents - 2 Matching Results

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Electric Time-Signaling Apparatus.

Patent for an electric time-signaling apparatus meant for use in hotels or other places where employees need to be alerted. The invention rings a bell and turns on a light when the signals goes off. "If the current of an incandescent electric-light system was electrically connected with a time-circuit, it would destroy the whole mechanism of the time-circuit" (lines 26-29).

Date: November 19, 1895

Creator: Todd, James T. A.

Item Type: Patent

Partner: UNT Libraries Government Documents Department

Method of and Apparatus for Treating Mineral Pitch.

Patent for an "improved method of and apparatus for treating mineral pitch and similar material to readily separate the asphalt and asphalt-oils from sand, bituminous rock, and other impurities contained in the mined material and removing the sand and impurities" (lines 12-17). The method circulates the material in hot water to separate the asphalt and asphalt-oils from the sand and impurities. The asphalt and oil rise to the top of the water and the impurities sink.

Date: November 5, 1895

Creator: Sellers, Harvey Lee; Conyngton, Hugh Ronald & Conyngton, Thomas