Double Stroke Pumping Jack
Description:
Patent for a double-stroke pumping jack with two pistons in the same cylinder "to discharge a steady stream of water therefrom" (line 12-13). This invention allows the pipe cylinder and pistons to be easily removed for repairs or cleaning.
Date:
March 16, 1915
Creator:
Winterborne, William H.
Item Type:
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Partner:
UNT Libraries Government Documents Department