Journal . versely upon it from perforatedhorizontal pipes in the intermediate fan withdraws air from the warp inlet or outletside of the casing, and forces it through a heaterback to the drying chamber. Vertical steam pipesmay also be placed within the casing to heat theentering air, and exercise a drying effect byradiation upon the warp.—B. N. Digester for the soda-, sulphate-cellulose processes ; Vertical - and sulphite-H. A. Pat 275,035, July 5, digester consists of a tall, upright vesselprovided with upper and lower pairs of hinged tube - plates, 24,26, and 23,
Journal . versely upon it from perforatedhorizontal pipes in the intermediate fan withdraws air from the warp inlet or outletside of the casing, and forces it through a heaterback to the drying chamber. Vertical steam pipesmay also be placed within the casing to heat theentering air, and exercise a drying effect byradiation upon the warp.—B. N. Digester for the soda-, sulphate-cellulose processes ; Vertical - and sulphite-H. A. Pat 275,035, July 5, digester consists of a tall, upright vesselprovided with upper and lower pairs of hinged tube - plates, 24,26, and 23, 27,connected by ver-tical tubes, 21,having perfora-tions or slots. Thematerial occupiesthe space betweenthe pairs of tube-plates and the lyeis introducedthrough 9, andcirculated in thedirection shownby the arrows,passing from theupper part of thedigester throughthe pipe, 10, 30,the rotary filter,12, the pump, 14,heater, 17, andvalve, 19, back tothe lower partof the digester,tubes, 21. Withit is possible. andthe thenupright up throughform of thedigester, to use vessels of up to 500 cb. m. capacity and toobtain by the soda process, pulp of a Ughter colourthan sulphite pulp.—A. S. 276 Cl. VI.—BLEACHING; DYEING; PRINTING; FINISHING. [Mar. 31,1915. Wool scourhif/ ami like liquors ; Coneentralion of and the recovery of grease and alkaline substances therefrom. E. V. Chambers, T. , and G. G. Jarmain, Pat. 13,005, May 27, 1914. The liquor is heated to about 200° F. (93° C),and then subjected to centrifugal action toseparate grease and sand. The clear liquorobtained is used repeatedly for scouring untU,through accumulation of alkali salts, it is con-centrated to a density unsuitable for scouringpurposes. It may then be further concentratedby means of washed flue gases, and the salts re-covered by incineration.—B. N. Bast fibre sicch as flax or hemp ; Preparing -for spinniny. B. S. Summers, Port Huron. Mich., Assignor to Summers Linen Co. Pat. 1
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectchemist, bookyear1882
