Archimede's Screw Pump - Hayward, CA
Posted by: 
saopaulo1
N 37° 37.399 W 122° 08.244
10S E 576120 N 4164371
An Archimede's Screw Pump at the Hayward Shoreline Interpretive Center.
Waymark Code: WM103QA
Location: California, United States
Date Posted: 02/19/2019
Views: 0
The plaque reads: ""In the late 1870's, inventive Andrew OlivOt studied the drawings of Archimedes (287-212 B.C.E ) and built these wind driven screw pumps based on the ancient designs. The wooden blades rotate in the windy which turns the screw shaft visible under the clear panel: S The turning of the screw hoisted salt water" up and into the waiting trough, where it was sent to the next salt pond for more evaporation and crystallization. It took five years for a pond of saltwater to .produce enough salt to harvest.""
Group that erected the marker: Hayward Historical Society
Address of where the marker is located. Approximate if necessary:
4901 Breakwater Ave
Hayward, CA USA
URL of a web site with more information about the history mentioned on the sign: Not listed
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