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Mold and Angle-Piece Used in Constructing Concrete Walls

Description: Patent for tools to create uniform concrete pieces and angles, with description of use and improvements and illustrations.
Date: April 13, 1886
Creator: Carrico, Thomas W.
Partner: UNT Libraries Government Documents Department

Steam Vacuum Pump.

Description: Patent for a new and improved steam vacuum-pump. This design consists in "[t]he combination, with a pump-cylinder, the water inlet and outlet pipes, a condenser-pipe, a steam-pipe, and valves located in the several pipes, of a vertically-movable rod having stops thereon, levers connecting the rod with the valves in the condenser-pipe and steam-inlet pipe, and a float loosely mounted on the rod and adapted to actuate the same" (lines 62-70).
Date: April 13, 1886
Creator: Hensley, Frank A.
Partner: UNT Libraries Government Documents Department
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