. Journal . the openings.—W. H. C. Drying, roasting, or otherwise treating pultvnJent or Igranular materials. J. and C. McNeil, Govan. North |Britain. Eng. Pat. 4491, Feb. 28, 1908. Thk material to be treated is fed into one end ofhorizontal, rectangular, metal vessel mounted on a liollow,j)erforated shaft and rotated by gearing. A number of Jinclined blades project inwards from each side of the vee»el |and form what is iiractically a screw or helix, which as th» vessel is rotate<l, lifts up the material, drops it again aodat the same time moves it forwarxl througli the vessel tothe other e
. Journal . the openings.—W. H. C. Drying, roasting, or otherwise treating pultvnJent or Igranular materials. J. and C. McNeil, Govan. North |Britain. Eng. Pat. 4491, Feb. 28, 1908. Thk material to be treated is fed into one end ofhorizontal, rectangular, metal vessel mounted on a liollow,j)erforated shaft and rotated by gearing. A number of Jinclined blades project inwards from each side of the vee»el |and form what is iiractically a screw or helix, which as th» vessel is rotate<l, lifts up the material, drops it again aodat the same time moves it forwarxl througli the vessel tothe other end, from which it is discharged, Hot air oiany other suitable drying or treating medium is introduced .through the hollow, jierforatcd shaft.—W, H. t. Vol. No. 5.] Cl. 1.—plant, apparatus, & MACHINERY. 235 Saising aciVf-s or other liquids by compressed air, steam, i or other elastic fluid under pressure ; Self-acting apparatus I for . W. Ravne, Manchester. Bng. Pat. 7054, March 31, 1908. ,. Two pressure-vessels. C. C. are filled alternately with theliquid to be raised, through the pipes. A, A, provided withnon-return valves, B, B. In these vessels, floats, E, E,are suspended by rods which pass through the pipes,H, H, from the air-escape valves, F, F, which are them-selves suspended by adjustable clips from the arms of thepivoted beam, K. The ends of the beam are connectedby links \vith the air-valves, G. G. which control thesupply of compressed-air conveyed by the branches, J, J,from the air-main, I, provided with the stop-valve. the vessel, C, to be just filled and C. emptied,the float. E, rises and the beam overbalances into theposition shown. The air-escape valve, F*, closes, the air-supply valve opens and the liquid is forced out of C,through the rising main, D. The vessel, C, is filling duringthis time. As soon as C, is empty and C. full, the beam,K, overbalances in the opposite direction and the contentsof C are forced out through the pipe. D. T
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectchemist, bookyear1882
