. Journal . surface to wash the deposit, and thewashings are sucked through into the box by the vacuumwhich is still maintained. When the deposit is sufficientlywashed, both the water spray and tlie vacuum are shutiff and the washed deposit is removed. The box is thenowered into the tank again by the machinery.—W. H. C. i parating finely-divided materials. ,T. JI. 8eaver. Boston, Mass., Eng. Pat. 12,958. -June 2, materials to be separated are fed into the chamber,;K, through the openings, k, q, from the hopper. S, by the|ivorni, li. They pass into the cyclone, C, and the, ightc


. Journal . surface to wash the deposit, and thewashings are sucked through into the box by the vacuumwhich is still maintained. When the deposit is sufficientlywashed, both the water spray and tlie vacuum are shutiff and the washed deposit is removed. The box is thenowered into the tank again by the machinery.—W. H. C. i parating finely-divided materials. ,T. JI. 8eaver. Boston, Mass., Eng. Pat. 12,958. -June 2, materials to be separated are fed into the chamber,;K, through the openings, k, q, from the hopper. S, by the|ivorni, li. They pass into the cyclone, C, and the, ightcr (larticles are carried forward by the air current up;he pipe, B, to the box. A^. The finest ])articles pass with?.he air up tlie pipe, E, into the box, 1<\ and thence into theJags, H, where they are arrested, while the air passes coarser particles return by the shoots. A, and 1). chamber, K. When the ap))aratus is first started, thelores of the bags, H, allow some dust to pass through. with the air. The doors, T, and M, are therefore keptclosed at first and the air passes back from I, by the pipe,P. to K. As soon as the bags, H, are partially filled andthey no longer allow the dust to pass, the doors, I, and M,are opened and the air enters at M. and leaves at T. WTienthe door, M, is closed, the flap, N, is opened by the aircurrent from O.—W. H. C. Separating substances of different specific gravities ; Ap-paratus for . J. M. Draper, Glasgow. Eng. Pat. 11,988, May 21, 1909.


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Keywords: ., bookcentury1800, bookdecade1880, booksubjectchemist, bookyear1882