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Anti-Friction Sucker-Rod Coupling.

Description: Patent for an anti-frictioin sucker-rod coupling. This invention relates to certain new and useful improvements in sectional sucker-rods for artesian, oil, and other wells, and has for its object to provide an improved construction of coupling-joint for connecting the sections of the rods together.
Date: January 26, 1892
Creator: Black, William L.
Partner: UNT Libraries Government Documents Department

Compensating Pump-Spring.

Description: Patent for an improvement on the inventor's previous patent (No. 450,657). The improvements include getting rid of the sleeve, and "employ[ing] volute springs instead of the straight flat springs formerly used; [the inventor] also dispense[s] with the links and connect the inner ends of the springs to long pitmen which have a pivotal connection with the suction rod at a point above the springs; [the inventor] furthermore provide[s] a means for adjusting the tension of the springs without altering the connection of the same with the suction rod" (lines 23-31).
Date: April 11, 1893
Creator: Black, William L.
Partner: UNT Libraries Government Documents Department

Antifriction Clasp.

Description: Patent for a new and improved anti-friction clasp. This design "is to provide means whereby the wear due to the rubbing of inclosed rods or ropes against an inclosing casing may be reduced to a minimum and whereby the central alignment of the rods or ropes with respect to the inclosing casing may be accurately preserved" (lines 11-17). It consists in "a series of friction balls or rollers mounted therein and projecting from the periphery thereof and being divided into sections adapted to be clamped at any point around the rod or rope" (lines 97-101).
Date: October 25, 1892
Creator: Black, William L.
Partner: UNT Libraries Government Documents Department

Wire Splicer and Tightener

Description: Patent for a wire splicer and tightener. The design has improvements from earlier wire splicers and is designed more for wire fence repair, but can also be used for stretching telegraph wires.
Date: November 28, 1905
Creator: Regenier, J. G. & Hamby, M. F.
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.
Partner: UNT Libraries Government Documents Department

Antifriction-Device-For-Sucker-Rods.

Description: Patent for an antifriction device designed to protect the rod (sucker rod), rope, or coupler from wear. A sucker rod joins the components of a piston pump in an oil well.
Date: November 4, 1902
Creator: Black, William Leslie
Partner: UNT Libraries Government Documents Department

Antifriction device for sucker rods.

Description: Patent for "an improved antifriction device for use in connection with inclosed traveling rods and the like to reduce the wear occasioned by the rubbing of the rod in its casing, and at the same time to so far reduce the area of said antifriction device which projects from the rod as to interpose the least possible obstruction to the free passage of material in the casing."
Date: November 4, 1902
Creator: Black, William Leslie
Partner: UNT Libraries Government Documents Department

Compensating Pump-Spring.

Description: Patent for improvements in compensating pump-springs by “storing up in the downward or idle stroke of the suction-rod, a power which is expended during the upward stroke to assist the crank in lifting the rod; and at the same time reducing the power required to drive the pump, equalizing the resistance, increasing the efficiency and generally prolonging the life of the entire mechanism.” (Lines 36-40) Illustration is included.
Date: April 21, 1891
Creator: Black, William L.
Partner: UNT Libraries Government Documents Department