Screw pump different applications and handling fluids with varying characteristics. Each ‘screw pump' operates on the same basic principle of a screw turning to isolate a volume of fluid and convey it. However, the mechanical design of each is different. The primary difference is the number of screws: one, two, three or more. The screw pump was described by Archimedes on the occasion of his visit to Egypt. This suggests that the apparatus was unknown to the Greeks before Hellenistic times. A cuneiform inscription of Assyrian king Sennacherib (704–681 BC) has been interpreted by Stephanie Dalley to describe casting water screws in
The Golden Screw The Golden Screw The Golden Screw was an Off-Off-Broadway folk rock musical written and performed by Tom Sankey which premiered at the Theatre Genesis in September 1966. It ran again from January 30, 1967 to March 5, 1967 at the Provincetown Playhouse in Greenwich Village. The show's cast album was the first rock theatrical recording of its kind. The play follows a Bob Dylanesque singer figure from folk music roots to commercialization. A subsequent production was mounted at Toronto's Global Village Theatre in 1972. Directed by Sankey, the cast included Elan Ross Gibson, Francois Regis-Klanfer and Yank Azman with music