JuxE 1. 1919.: 



THE INDIA RUBBER WORLD 



487 



CHEMICAL PATENTS. 



THE UNITED STATES. 



Puncture-He.\ling Composition'. A puncture-healing com- 

 pound including beeswax 1 ounce, paraffine 2 ounces, rosin 

 2Y2 ounces, linseed oil ^-ounce, ground cork 2 ounces, and dis- 

 integrated asbestos 2 ounces, t Marie R. Weaber and Hermann 

 Clemens, assignors of one-half to Otto Weydemeyer — all of El 

 Paso, Texas. "United States patent No. 1,299,273.) 

 THE DOMINION OF CANADA. 



Rubber Substitute. Process and product for a rubber-like 

 substance comprising a mixture of fixed oil, sulphur, and zinc 

 oxide, substantially free from air and moisture, having been 

 subjected to heat, pressure and agitation until the nascent 

 period of the elements reacting has ceased. (Harry H. Hazel- 

 tine and Morton Gregory, both of Tacoma, Washington, U. S. A. 

 Canadian patent No. 189,232.) 



Rubber Vulc.\niz.\tion. An accelerator for the vulcanization 

 of rubber and similar materials, consisting of a solution of 

 sodium or potassium in aniline or of potassium in diaphemyla- 

 mine or toluidine. (The Dunlop Rubber Co., Limited, West- 

 minster, London, assignee of Douglass Frank Twiss, Sutton, 

 Coldfield, Warwick — ^both in England. Canadian patent No. 

 190,042.) 



Process and Product of Vulcanizing Rubber. — A Process for 

 treating rubber or similar material which comprises subjecting 

 the rubber to a vulcanizing agent comprising a nitro-derivative 

 of anthracene (beta-dinitroanthra-quinone.) (The Canadian 

 Consolidated Rubber Co., Limited. Montreal, Que., assignee of 

 W. A. Gibbons, Flushing, N. Y., U. S. A. Canadian patent No. 

 190,352.) 



Rubber Composition. A mixture of 60 parts of rubber, 14 

 parts of golden antimony sulphide, and 16 parts of asbestos or 

 mica is used for electric insulation of cables and wires, for 

 packing glands, etc. (F. H. Bloomlield, 76 St. John's Park, 

 Blackheath, London, British patent No. 122,310.) 



THE UNITED KINGDOM. 



Packing. Joint-making rings are composed of a corrugated 

 metal core covered with asbestos, india rubber, etc., which may 

 be secured by vulcanization and a virapping material, and in 

 some cases coated with graphite. (S. A. Copeland, 24 Essex 

 Gardens, and C. G. Alexander, 125 Rectory Road, both of Gates- 

 head, and J. Taylor, Dunford & Co., 12 Dean street, Newcastle- 

 on-Tyne— both in England. British patent No. 122,724.) 



Plastic Composition. A composition resembling rubber is 

 obtained by heating fish scrap or fish oil with sulphur, after- 

 wards heating the product under pressure. The mixture is 

 heated first to 175 degrees C. Afterward the temperature is 

 raised to 220 aegrees C. over a period of one to two hours. The 

 plastic mass so obtained is mixed with more sulphur, lead oxide 

 is added to accelerate the reaction, and the whole heated at 155 

 degrees C. under pressure of 20 to 40 pounds per square inch 

 for Yz to 1 hour. The product may be used as rubber substitute 

 or may be compounded with rubber. (M. Gregory. 2113 North 

 Anderson street, Tacoma, Washington, U. S. A. British patent 

 No. 123,114.) 



Plastic Composition. Waste cork sawdust and pieces of 

 cork, with or without refuse of tan or wood fiber, are made 

 into a composition by addition of a mixture of alum, crude 

 shellac, gum arabic, gulta percha, carbon bisulphide and methyl- 

 ated spirits. A specified composition is : alum, 4 ounces ; carbon 

 bisulphide, 1 pint; crude shellac, 8 ounces; gutta percha, 8 

 ounces; methylated spirits, 1 pint, combined with a proportion 

 of the specified fibrous material. (E. Wood, 7 Sunny Terrace, 

 Granville Road, Weymouth, Dorsetshire. British patent No. 

 123.285.) 



Impregnated Textile Belting. Textile belting is impregnated 

 with linseed oil, asphalt, balata, etc., freed from hygroscopic 

 substances and dried by a continuous operation. The belts are 



dried by healing under reduced pressure. The solvent is passed 

 with the steam into a condenser and recovered. (E. C. R. Marks, 

 57 Lincoln's Inn Fields, London. British patent No. 123,502.) 



LABORATORY APPARATUS. 



CONVENIENT WALL CLAMP. 



A VERY useful wall clamp adapted for sup- 

 ** porting such objects as maps, charts, 

 drawings, blue-prints, fabrics, writing pads, etc., 

 on a wall surface is shown in the annexed cut 

 and called a "Kling-KIamp." It consists of a 

 reversible cam to accommodate either thick or 

 thin objects, which grips the object in propor- 

 tion to its weight. The range of usefulness of 

 this simple and inexpensive device is practically 

 unlimited. It will be particularly appreciated 

 by the works chemist in his office. laboratory 

 and testing rooms. (Standard Scientific Co., 

 70 Fifth avenue, New York City.) 



DISTILLATION ADAPTER. 



The accompanying cut illustrates the H-J distillation adapter 

 which presents certain distinct practical advantages worthy of 

 note. It can be readily attached to any ordinary flask, thereby 

 adapting it for all purposes of distillation. This 

 combination practically replaces the usual form 

 of one-piece distillation flask. It is connected to 

 the flask through a rubber or cork stopper, form- 

 ing a tight but non-rigid 

 joint, thus greatly lessening 

 the liability to injury when 

 used. 



The separability of the 

 adapter and flask presents 

 several distinct points of value and convenience, 

 for example : flasks may be easily removed for 

 refilling without disturbing other connections. 

 In case of breakage of flask or adapter the cost 

 of replacing that part is less than the cost of a 

 new distillation flask. When not in use the 

 adapter may be removed to a suitable place 

 without fear of injury. These features are cer- 

 tain to make this adapter popular in laboratories 

 where distillation flasks are much in use. (Stand- 



H-J Distilla- 

 tion Adapter. 



Stansiphon. 



ard Scientific Co., 70 Fifth avenue. New York 



City.) 



AUTOMATIC SIPHON. 



A series of practical automatic 

 siphons covering the usual lab- 

 oratory and factory requirements 

 has been perfected as shown in the 

 cut. These siphons are made in 

 glass, hard rubber, and a variety of 

 metals, according to the liquid to be 

 used. The various models are 

 classified as automatic or self- 

 starting; bulb pressure attachment; 

 bulb lift and gravity pressure, and 

 piston pressure. (Standard Scien- 

 tific Co., 70 Fifth Avenue, New 

 York City.) 



CANADIAN INSTITUTE OF CHEMISTRY. 



The Canadian Institute of Chemistry was organized with 28 

 members at the Canadian Chemists' Convention held in Mon- 

 treal, Quebec, May 17, 1919. Three classes of membership are 

 provided for. At the first session Dr. W. L. Goodwin, of the 

 Kingston School of Mines, presided. .Among the Montreal in- 

 dustrial plants visited by the members of the Institute was that 

 of the Canadian Consolidated Rubber Co.. Limited. 



