Resource Type

Load-Indicator. (open access)

Load-Indicator.

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.
System: The Portal to Texas History
Rotary Boring Drill. (open access)

Rotary Boring Drill.

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.
System: The Portal to Texas History
Pipe-Wrench (open access)

Pipe-Wrench

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.
System: The Portal to Texas History