132 



THE INDIA RUBBER WORLD 



[December 1, 1916. 



gum in a solution of resin in a hydrocarbon. [Harry B. Cox, 

 Bedford Hills, N. Y. Assignor to Herman Goldman, New 

 York, N. Y. United States patent No. 1,202,758.] 



Rubber Product. A product comprising recovered stock re- 

 plenished with resin, and a material obtained by dissolving 

 vulcanized gum in rubber resin. [Harry B. Cox, Bedford Hills, 

 N. Y. United States patent No. 1,202,759.] 



Process of Reclaiming Rubber. A process of recovering 

 rubber stock from vulcanized rubber which consists in treating 

 it with a resin solution together with a solution of vulcanized 

 gum in a resin solution. [Harry B. Cox, Bedford Hills, N. Y. 

 United States patent No. 1,202,760.] 



Tre.atment of Fabrics Used in Conjunction with Vul- 

 canized Rubber. According to this process fabric is treated, 

 previous to its incorporation with rubber, with certain re- 

 active materials, in order to protect it against the dis- 

 integrating action of sulphurous and sulphuric acids resulting 

 from vulcanization. The materials mentioned as suitable 

 neutralizers include (1) alkalis, such as sodium carbonate; 

 (2) alkaline or basic salts, such as borax or basic lead car- 

 bonate; (3) basic oxides or hydroxides,' such as lime, baryta, 

 or barium hydroxide; (4) salts of metallic oxides, such as 

 barium carbonate and zinc acetate. [William Edgar Muntz, 

 London, England, United States patent No. 1.203,241.] 



Shoe Bottom Filler. Mixture of rosin, Pontianak, and oil 

 solvent thickened with dextrin to a stifl shoe-bottom filler when 

 cold. [Andrew Thoma, Cambridge, Massachusetts, assignor to 

 North American Chemical Co., New York City. United States 

 patent No. 1,203,435.] 



Sizing Composition. Consisting of rosin soap in which is 

 dissolved approximately one per cent, of rubber material. [Jud- 

 son A. De Cew, Montreal, Canada. United States patent No. 

 1.203,857.] 



Tire Filler. A mixture of paste, plaster of paris, chalk, a 

 perfume, alcohol and bismuth subnitrate. [David G. Elder, 

 Chickamauga, Georgia. United States patent No. 1,203,720.] 



Vulcanization Process. Consisting in mixing wood creosote, 

 partially vulcanized vegetable oils and rubber compound, and sub- 

 jecting the whole to a vulcanizing heat. [Augustus O. Bourn, 

 Bristol, Rhode Island. United States patent No. 1,203,966.] 



Non-Inflammable Waterproofing Composition. Consisting 

 of a mixture of rubber cement, spirits of turpentine, paraffin wax, 

 gasolene and tetrachloride of carbon, the physical characteristics 

 of which are that it is non-inflammable and waterproof. [James 

 O. Persons, Norfolk, Virginia. United States patent No. 1,204,- 

 056.] 



CANADA. 



Rubber Preservative. Comprising in combination, cocoa but- 

 ler, castor oil and gasolene in the proportions of two ounces to 

 two quarts, to one quart, respectively, of the ingredients named. 

 [Samuel T. Smith, Blue Island, Illinois, U. S. A. Canadian 

 patent No. 171,630.] 



THE UNITED KINGDOM. 



Vulcanization by Ultra-Violet Rays. [H. P. M. A. Oliver. 

 British patent No. 7,823 (1915).] 



Substitute for Rubber. Mixture of colophony, caoutchouc, 

 sulphur, naphtha and white lead. [R. Castels. British patent 

 No. 7,703 (1915).] 



SWITZERLAND. 



Regener.^ting Rubber. Fabric containing rubber is treated 

 with tetrachloroethane, with heating, as a solvent for the rubber. 

 [Compagnie Generale des Caoutchoucs de Terebenthine. Swiss 

 patent No. 72,731 (June 16, 1916).] 



SWEDEN. 



Rubber Substitute. Rubber and egg albumen is molded and 

 cold vulcanized, or after addition of sulphur it is hot vulcanized. 

 [C. Lamberty. Swedish patent No. 40,822 (June 14, 1916).] 



T 



LABORATORY APPARATUS. 



STORMER VISC08IMETER. 



HE Stormer viscosimeter permits accurate practical work 

 with a small sample of liquid. It is simple in construction ; 

 may be quickly and easily cleaned and permits a greater num- 

 ber of tests to be made accurately within a given time than 

 other instruments designed for this 

 purpose. A SO-cc. sample is all that 

 is required for a test. 



The instrument is designed upon 

 the principle of rotating a cylinder 

 in the liquid under examination by 

 means of a constant weight and at a 

 known temperature. It consists of 

 a cylinder B which may be rotated 

 in a test cup A, surrounded by a 

 water or oil bath C to maintain the 

 desired temperature. A revolution 

 counter is connected to the spindle 

 supporting the cylinder. The time 

 required for the cylinder to make a 

 specified number of revolutions in 

 distilled water and in the liquid 

 under examination is the measure of the viscosity sought. 

 [Bausch & Lomb Optical Co., Rochester, New York.] 



MkO 



BAHNSTEAD AUTOMATIC WATER STILL. 



The value of pure distilled water for laboratory and manufac- 

 turing operations is universally recognized. The type of auto- 

 matic still here illustrated and described is heated by gas, steam 

 or electricity and will produce, it is claimed, pure water free of 

 ammonia and all gaseous and organic impurities at a low oper- 

 ating cost. The operation of the still is continuous. The water 

 enters the condenser at the supply pipe and, passing around the 

 condensing tubes, is discharged into an open pipe, allowing the 



gases to escape. The water thus purified passes into the still 

 where it is converted into steam, and passing into the condenser 

 is condensed and discharged chemically pure. A continuous 

 stream of water is required for cooling purposes and to supply 

 the boiler that in this particular still is heated by gas. [Eimer & 

 Amend, New York City.] 



