UNT Libraries Government Documents Department - 4 Matching Results

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Elevator and Conveyer for Concrete-Mixers.

Patent for improvements in elevators and conveyers for concrete-mixers “whereby the mixed concrete can be fed to the wall mold at different elevations, the elevator being extended and the conveyer raised for constructing the successive stories of the building.” (Lines 17-21) Illustration is included.

Date: July 1, 1913

Creator: Miller, Frederick

Hydraulic Swivel

Patent for the hydraulic swivel. This is an improvement to the hydraulic swivel that already exists. It involves "the rotary well-drilling machines, to permit the flow of water to the point of the drill." (Black)

Date: December 1, 1914

Creator: Black, Lee J.

Manufacture of Aluminum Chlorid

Patent for the manufacture of aluminum chlorid and the method of making aluminum chlorid to produce vapors that are subsequently condensed in any suitable manner. This patent is important because it is advantageous to work with a producer of gas made at as high a temperature. This is because of the greater amount of sensible heat it carries forward for use in the reaction.

Date: July 1, 1919

Creator: King, George H.

Oil-Burning System

Patent for a liquid fuel system used for burning crude oil. Illustrations included.

Date: February 1, 1910

Creator: Duke, Holmes