UNT Libraries Government Documents Department - 4 Matching Results

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Cross-Roller Bit.

Description: Patent for a certain new and useful improvement in cross-roller bits. Invention relates to "improvements in rotary boring drills for use in drilling wells for water, oil or gas and has particular reference to drills of the so called cross roller type for use in hard formation."
Date: November 4, 1919
Creator: Hughes, Howard R.
Item Type: Refine your search to only Patent

Extensible Neck-Yoke

Description: Patent for a neck yoke which may be lengthened or shortened and has novel means for securing the adjustable sections to prevent slipping, should the main fastening become loose.
Date: May 4, 1915
Creator: Waddell, Gasper Leon
Item Type: Refine your search to only Patent

Hydrocarbon-Burner

Description: Patent for a burner constructed to admit a force of steam or air is sent through the nozzle with assigning to the fuel in fuel reservoir. This invention is used to burn the heavy crude oil.
Date: July 4, 1916
Creator: Nicholson, John
Item Type: Refine your search to only Patent

Pipe-Wrench.

Description: Patent for the improvement of the pipe wrench for heavy construction. This invention was made to allow workers to use a variety of parts and arrangements depending on the type of pipe they are working with.
Date: January 4, 1921
Creator: Reed, Clarence E.
Item Type: Refine your search to only Patent
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