sandpump (sand pump)

1. In rope- drilling, a cylinder, provided with a valve at the bottom, which is low ered into the drill-hole from time to time to remove the pulverized rock, or sludge. Also called sludger. [Pennsylvania oil - regions.]2. A powerful water-jet with annular nozle inclosing a tube which is sunk in loose sand, and operates as an injector to lift the sand with the water which an IMG:content-0086.jpg:[merged small][merged small][merged small][merged small][merged small][ocr errors][merged small][merged small][merged small] IMG:content-0087.jpg:[ocr errors] a, sand to be removed; b, suction-pipe; c, a modification of induction-pipe; d, discharge-pipe. the jet-pump. The water, pa ing upward around the upper end of the suction-pipe, produces an upward draft or suction on the mingled sand and water below, drawing it upward and discharging it through d. sand-rat (sand'rat), n. A pocket-gopher of the genus Thomomys, homomys, found in sandy places in the western coast-region of North America; the cama -rat. The term applies to some other members of the family, as the common Geomys bursar i us. See cuts under cama - rat and Geomyidæ. sand-reed (sand'rēd), n. A shore-gra , the marram or beach-gra , Ammophila arundi nacea. sand-reel (sand'rēl), n. A windla , forming part of a well-boring outfit, used for operating a sand-pump. 5332