UNT Libraries Government Documents Department - 5 Matching Results

Search Results

Results: 1 - 5

Load-Indicator.

Description: Patent for a Load-Indicator for tools being used in drilling a well. The indicator gives an accurate measure of the weight upon the drill, allowing operators to adjust the weight accordingly.
Date: November 25, 1919
Creator: Fletcher, Harold W.

Machine for making Water and Oil Screens.

Description: Patent for a new way of making forming "a wire screening surface about a perforated pipe" (lines 67-68) with illustrations.
Date: November 25, 1913
Creator: Kreiter, Richard F.; Post, Ernest S.; Roco, Albert L. & Layne, Mahlon E.

Pipe-Wrench

Description: Patent for a pipe-wrench that features new and useful improvements and also extends the purposes to which the pipe-wrench may be applicable.
Date: November 25, 1919
Creator: Steen, Buford J.

Rotary Boring Drill.

Description: Patent for "rotary boring drills for use in drilling wells or mines in earth or rock" (lines 11-13) including instructions and illustrations.
Date: November 25, 1919
Creator: Hughes, Howard R.

Winding Drum

Description: Patent for an improved winding drum. This uses a different type of adjustable cam that allows for less oscillation and better control of winding and unwinding the cable.
Date: November 25, 1913
Creator: Voight, Phillip H. & Kuehne, Oscar C
Back to Top of Screen