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
Item Type:
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Partner:
UNT Libraries Government Documents Department