Plug for Lubricator-Cups.
Description:
Patent for a lubricator cup and plug system typically used with rods and crank pins. The improvements prevent plug loss and alter the cup to be “readily placed in position or removed therefrom and the plug can be adjusted as required” (lines15-18). Includes illustrations and detailed part description.
Date:
November 24, 1908
Creator:
McDonald, Al
Item Type:
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Partner:
UNT Libraries Government Documents Department