Journal . le portion of the gasesis recovered, and the non-comlensable portion isused again for operating the ejectors.—W. U. u. Incandescence electric lamps. C. Oladitz, London. Eng. Pat. 13,541, June S, close-coiIed tungsten filament is coated witha pa-ste composed of thormm =J/ ^^f, ,f • °Xdmixed with sodium silicate, and the bulb is filledwith hydrogen or nitrogen.—is. JN. Pyroligneous acid; Process of producing)---. E H French. Sructhport, Pa. 1 at. 1,150,580. Aug. 17, 1915. Date of appl., Sept. o, 1911. Renewed Dec. 23, Ger. Pat. 249,333 of 1911 ; this J., 1912, 914
Journal . le portion of the gasesis recovered, and the non-comlensable portion isused again for operating the ejectors.—W. U. u. Incandescence electric lamps. C. Oladitz, London. Eng. Pat. 13,541, June S, close-coiIed tungsten filament is coated witha pa-ste composed of thormm =J/ ^^f, ,f • °Xdmixed with sodium silicate, and the bulb is filledwith hydrogen or nitrogen.—is. JN. Pyroligneous acid; Process of producing)---. E H French. Sructhport, Pa. 1 at. 1,150,580. Aug. 17, 1915. Date of appl., Sept. o, 1911. Renewed Dec. 23, Ger. Pat. 249,333 of 1911 ; this J., 1912, 914. Manufacture of [tungsten] xcire. Eng. Pat. 12, X. Rendering tungsten duelile. Eng. Pat. 14,381. SeeX. Manufacture of pure ductile tungsten. Eng. ,490. Sec X. Ductile filament. Pat. 1,149,701. See X. o2 950 Cl. iu.—tae and tar products. [Sept. 30, 1915 ffl.—TAR AND TAR PRODUCTS. Toluene in commercial iolvols . D. Northall-Laurie. 384—389. ; Determination ofAnalyst, 1915, 40,. Two hundred of the sample, measured at tap-water temperature, is placed in a distillation flask of just sufficient capacity, -n-ith the neck cut off just above the side tube. The contents are distilled at the uniform rate of per minute through an efficient condenser into a 50 cylinder. When 50 has been collected, the cylinder is quickly changed for a 100 c cylinder and, when 98-5 of distillate has been collected, the burner is removed and the contents of the flask allowed to cool : by the time that all drops from the con-denser have ceased,100 of distillate will have collected. Should the first 50 turbid from thepresence of water, it isshaken with a pellet of calcium contents of the distillation flask are now cooled under the tap andtransferred to a boiling point apparatus (see flg.).In the neck of tlie flask is placed a thin glasscylinder with a hole in the side, corresponding withthe outlet in the neck of the flask and sea
Size: 1285px × 1944px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, booksubjectchemist, bookyear1882
