6 Matching Results

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in subjects: "pipes"  
Results: 1 - 6

Wrench.

Description: Patent for a pipe wrench that is is strong but does not crush the pipe and eliminates the need for other specialized tools to perform work on pipes.
Date: April 2, 1907
Creator: Lavier, Thomas H.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Pipe-Clamp.

Description: Patent for a pipe clamp for drawing well casings out of wells that can be used on different size pipes and grips harder as resistance increases.
Date: July 23, 1907
Creator: Benedict, George Spencer
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Clamp.

Description: Patent for a clamp "for use in in connection with hoisting-tackle for raising or lowering well-pipes..."(lines 9-10) that has one side attach to the pipe and the other side be releasable from the pipe.
Date: April 9, 1907
Creator: Danforth, Joseph B.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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