| 摘要 |
383,117. Sifting-apparatus. KUHNEN, J., 95, Ebertstrasse, Coblenz, Germany. Feb. 1, 1932, No. 2947. Convention date, Jan. 30, 1931. [Class 117.] In a gravity sanddrying apparatus the sand falls between heated tubes 5, next through shaker screens 15, 14, 13 operated by a crank handle 20a, and then through a pair of inclined screens 10 situated over a furnace flue 3 into the storage chamber A. Any stones &c. roll down the screens 10 and pass through gates 9 to lateral discharge outlets 8.
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