UNT Libraries Government Documents Department - 8 Matching Results

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Compressor.

Description: Patent for a refrigerating machine compressor, which compresses more gas, cools the compressor with the incoming gas, and uses excess heat to dry the gas coming in.
Date: April 19, 1910
Creator: Mayhew, John Daugherty
Item Type: Refine your search to only Patent

Grave-Cover

Description: Patent for a device to provide a temporary cover to open graves made of non-rusting materials with adjustable length.
Date: September 19, 1912
Creator: Rankin, Daniel H. & Cox, William, E.
Item Type: Refine your search to only Patent

Grease-Trap.

Description: Patent for a grease trap "in which the grease is designed to be removed from the trap automatically and the object of my invention is to cause the water passing through the trap to carry the grease out with it" (lines 8-12).
Date: March 19, 1895
Creator: Henderson, Thomas
Item Type: Refine your search to only Patent

Pump-Actuating Mechanism.

Description: Patent for improving measuring pumps "by providing a pump actuating means so constructed that a continuous movement of the crank in one direction will cause a reciprocation of the piston in both directions" (lines 29-33), with illustrations.
Date: April 19, 1921
Creator: Dean, Robert A.
Item Type: Refine your search to only Patent

Saw Gummer and Sharpener

Description: Patent for a sharpener for saw blades designed to increase the strength of the blade by "imparting an oval or rounding cut to the back of the teeth" (lines 15-16). Illustrations included.
Date: January 19, 1909
Creator: Loughridge, John H.
Item Type: Refine your search to only Patent
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