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Pump-Operated Device
Patent for "combination with a pump-operating crank-shaft and a walking-beam operatively connected with the pump-rod, means for preventing sudden movements of the pump-rod at the ends of its strokes and for assisting in starting the rod in its reciprocations" (lines 10-15).
Date:
May 28, 1901
Creator:
Crawford, Charles Buchanan
System:
The Portal to Texas History