27 Matching Results

Search Results

prev Results: 25 - 27

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

Antifriction Decive for Sucker-rods and Couplings

Description: Patent for an improved method of connecting sucker-rods, couplings, or ropes so as to minimize wear and extend the life of the materials, with illustrations.
Date: November 4, 1902
Creator: Black, William L.
Partner: UNT Libraries Government Documents Department

Air-Break Signaling and Releaseing Device.

Description: Patent for an improvement in air-brake release-valve in trains to signal train crews and release the breaks if they become set for any reason, or stuck, while the train is moving, including descriptions of the release valve and illustrations.
Date: November 4, 1902
Creator: Dukesmith, Frank H.
Partner: UNT Libraries Government Documents Department
Back to Top of Screen