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Antifriction Device For Sucker Rods Or The Like

Description: Patent for an antifriction-roller (part of a pumping mechanism) with a mounting that can be manufactured at a low cost, "quickly and readily applied to a rod at any point....and prevent it from bending...and, furthermore, interpose a minimum obstruction to the flow of the liquid in the casing" (lines 17-25)
Date: March 25, 1902
Creator: Black, William L.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Rotary Force-Pump

Description: Patent for an improved type of water pump that operates using a method where "valves of each piston work parallel to each other and through the cylinders at points diagonally opposite" (lines 15-17)
Date: September 23, 1902
Creator: Frank, Samuel M.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Safety-Clamp.

Description: Patent for safety clamp "designed with special reference to supporting well-tubing in place in shallow or deep wells" (lines 8-10).
Date: November 11, 1902
Creator: Treadwell, Cornelia E.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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