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Hoisting Drum
Patent for improvements to hoisting drums for use in drilling oil, gas, and water wells, with the object being "to employ a plurality of hoisting drums upon the same shaft so that the cable may be wound partly on one drum and partly on another" (lines 73-76) such that the danger of cable cutting is decreased and the speed of operation is increased, including illustrations.
Date:
May 2, 1922
Creator:
Suman, John R. & Gamble, Adrian R.
System:
The Portal to Texas History
Notching Means for Wire-Winding Machines
Patent for a notching means for wire winding machines for use in making well screens.
Date:
May 2, 1911
Creator:
Fisk, Lawnnedo
System:
The Portal to Texas History