View of a worker closing the hydraulic press in the Rubber Compounding and Processing Laboratory at the Naval Air Experimental Station. This unit is a 200-ton capacity Williams-White Moline machine equipped with three 24" x 24" cored steam platens and pull-back pistons for rapid pressure release. At the laboratory, the hydraulic press was used to cure, i.e. toughen or harden, molded rubber articles. This photograph was included in a 1949 Naval Air Experimental Station report on compounding rubber.
United States. Navy, and Naval Air Experimental Station. “Closing Operation on Hydraulic Press,” circa 1949. Photographs from the Papers of J. Hartley Bowen, Box 1. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/mc87pq29x.
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