The Tube-mounted screw pump from Schreiber incorporates the Archimedean screw pump concept in a self-contained unit for ease of installation and construction. No variable-speed electrical controls are required. The pumps offer low operating costs, low maintenance, nonclogging operation and minimal head. Patterned after the Archimedean screw, the pump’s assembly consists of a simple screw, upper bearing, lower bearing and drive arrangement. They lift large volumes efficiently at low head at any treatment stage. Screw pumps from Lakeside Equipment Corporation offer built-in variable capacity that automatically adjusts the pumping rate and power consumption to match incoming flow while operating at a constant speed. at the site of the region’s original commercial salt operation.Get Pumps articles, news and videos right in your inbox! Sign up now. Oliver.Īfter it was dismantled and donated to the Hayward Area Shorelines Interpretive Center (HARD), and re-assembled by Henry Pratt and Russ Gebhardt, the pump was redesignated in a ceremony in Hayward, Calif. It was restored to working condition by Leslie Pond Superintendent Donald Holmquist, who used an original drawing from O.E. Andrew Oliver, who founded the Oliver Salt Company (absorbed by the Leslie Salt Company in 1936), designed this version of the wind-driven Archimedes screw-pump. The design of the windmill drive on the pump shaft originated in Holland before 1600. The screw-pump concept is attributed to Archimedes (287-212 BCE).
It represents a mechanically simple method used for more than a century in the San Francisco Bay Area, from about 1820 to 1930. This late example of the wind-driven Archimedes screw-pump was used to recover salt through an age-old process of solar evaporation, which shifted brine from one salt concentrating pond to the one of next higher salinity.
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