Gas Compressing Pump for Ice Machines.
Description:
Patent for a new and improved pump for refrigerators. This design consists in "[t]he combination, with the cylinder, having inlet at or near its lower end, a downward-closing valve at its upper end, an open-ended piston having internal ribs or projections, annular valve-seat around its upper open end, and a centrally-apertured bottom plate, of the valve having vertical movement within the piston and closing upwardly against the valve-seat, said valve being formed of the two sections . . . havin…
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Date:
December 25, 1888
Creator:
Farnsworth, Thomas
Partner:
UNT Libraries Government Documents Department