July 



THE INDIA RUBBER WORLD 



561 



ized. {Joseph Harold Mandleberg, Pendleton, Manchester, 

 England. United States patent No. 1,302,064.) 



Composition for Impregnating and Coating Balloon and 

 Like Fabrics : 100 parts by weight of rubber, 1 lo 5 parts of wax, 

 J4 to 2 parts of litharge and 2 to 4 parts of sulphur. (Joseph 

 Harold Mandleberg, Pendleton, Manchester, England. United 

 States patent No. 1,302,066.) 



Treating Rubber to Increase its Elasticity, which consists of 

 subjecting it to the action of a resinous gummy preserving juice 

 in its natural state. (Ruben Zertuche, Torreon, Mexico. United 

 States Patent No. 1,302,266.) 



Puncture-Closing Solution. .\ compound consisting of 

 equal parts by volume of distilled water and alcohol, there being 

 admixed to each gallon of the combined liquid three ounces by 

 weight of a filler such as paper pulp, and silk fiber, the liquid 

 serving to carry the fiber and pulp to a hole in a tire whereby a 

 mat is formed to bridge the hole. (Ralph Noll and Christopher 



C. Shephard, Chadron, Nebraska. United States patent No. 

 1,302,416.) 



Vulcanizable Composition. Powdered scrap leather is boiled 

 in water containing sufficient caustic to saponify the fatty matter 

 in the leather without dissolving the leather, then the treated 

 leather powder is dried, and mixed with a resilient vulcanizable 

 binding material under the action of heated mixing rolls. (John 

 Stuart Campbell, London, England. LInited States patent No. 

 1,302,463.) 



Plastic Composition. A solution of glue containing sulphon- 

 ated fish oil and formaldehyde. (Lothar E. Weber, Brighton, 

 Massachusetts. United States patent No. 1,302,739.) 



Plastic Material and Process. A solution of glue and 

 water, adding thereto sulphonated fish oil, adding and mix- 

 ing therein a quantity of fibers, supplying to the product a com- 

 paratively weak solution of formaldehyde, and subjecting the 

 product to pressure and heat. (Lothar E. Weber, Brighton, 

 Massachusetts. United States patent No. 1,302,740.) 



Rubber Composition and Method of Making. A mixture of 

 rubber and chemically treated cotton in powdered form, and free, 

 or substantially so, from the tensile strength possessed by un- 

 treated cotton. (John M. Bierer, assignor to Boston Woven 

 Hose & Rubber Co., both of Boston, Massachusetts. United 

 States patent No. 1,303,759.) 



Resilient Rubber Compound Material — A sheet of resilient 

 material having a non-slipping hairy surface consisting of a 

 vulcanized rubber binder and incorporated wool fibers; the 

 proportion of rubber to wool being such that the resulting 

 material possesses the tensile strength and wear-resisting property 

 of vulcanized rubber loaded with zinc oxide, and the elasticity 

 of pure rubber. (Talmon H. Rieder and William B. Wiegand, 

 Montreal, Quebec, Canada, assignors to The Goodyear's Metallic 

 Rubber Shoe Co., Naugatuck, Connecticut. United States patent 

 No. 1,305.008.) 



THE UNITED KINGDOM. 



Vulcanizing India Rubber. Potassium or sodium dissolved 

 in a primary or secondary aromatic amine is used as an ac- 

 celerator of vulcanization. The particular accelerators described 

 are sodium or potassium in aniline or potassium in diphenyla- 

 mine. (Dunlop Rubber Co., 14 Regent Street, Westminster, and 



D. E. Twiss, Royal Road. Sutton Coldfield, Warwickshire, Eng- 

 land. British patent No. 124,276.) 



Balloon Fabrics, Etc. Fabrics for balloons are impregnated 

 on the uncoated side with petroleum jelly solution. (J. Man- 

 dleberg & Co., Albion Waterproofing Works, Pendleton, Man- 

 chester, England. British patent No. 124,494.) 



Impregnating and Co.^ting Fabrics. Balloon and like fabrics 

 or materials are rendered impermeable to gases by impregnation 

 and coating with a solution of a composition consisting of 100 

 parts of rubber, 1 to 5 parts of ceresine or paraffine wax, ^ to 



2 parts of litharge, and 2 to 4 parts of sulphur. A number of 

 coatings of different strengths are applied to the fabric, the 

 earlier one being very thin, so as to cause thorough impregna- 

 tion. After vulcanization by slowly raising the temperature to 

 285 to 295 degrees F., the fabric may be treated with petroleum 

 jelly in solution. (J. Mandleberg & Co., Albion Waterproofing 

 Works, Pendleton, Manchester, England. British patent No. 

 124,495.) 



Balloon or Air-Ship Fabrics. Gelatine is used for or in 

 addition to layers of hitherto used materials, such as rubber, oil, 

 cellulose compositions, etc. (R. T. Glazebrook, National Phys- 

 ical Laboratory, Teddington, Middlesex; W. M. Rouse, 74 New 

 Oxford Street, London ; and A. Johnston, Castle Mills, Fountain- 

 bridge, Edinburgh. British patent No. 124,520.) 



THE DOMINION OF CANADA. 



Sole Composition. A vulcanized shoe sole or heel composed 

 of a mixture of comminuted waste felt roofing saturated and 

 treated with asphaltum and boiled linseed oil, reclaimed rubber, 

 and vulcanizing material. (Charles S. Bird, assignee of George 

 R. Wyman and Andrew E. Currier, all of Walpole, Massa- 

 chusetts. Canadian patent No. 190,652.) 



Rubber Substitutes. The process and product of a vulcanized 

 composition of matter consisting of linseed oil which has been 

 oxydized at a temperature of 200 to 250 degrees C, aluminum 

 stearate, a numeral hydro-carbon of high boiling point, an inert 

 filler, and sulphur. (Edward S. A. Cohen, Hague, The Nether- 

 lands. Canadian patent No. 190,802.) 



THE FRENCH REPUBLIC. 



Process of Regenerating Vulcanized Soft or Hard Rubber. 

 (B. J. F. Varenhorst and J. G. Fol. French patent No. 489,230.) 



GERMANY. 



Process for Improving Caoutchouc-like Substances. The 

 caoutchouc-like substances obtained by treating butadiene or 

 its homolog with metals such as sodium, in presence of carbon 

 dioxide (see French patent No. 459,005), do not yield 

 satisfactory products on vulcanization. Good results are ob- 

 tained, however, if the substances before vulcanization are sub- 

 jected to mild oxidation, corresponding to an absorption of 

 3—4 per cent or even 6 per cent of oxygen. For example, the 

 product obtained from isoprene by the action of sodium in 

 presence of carbon dioxide, after being washed with water, is 

 spread out while still moist and exposed to the air. After three 

 days, when about 3 per cent of oxygen has been absorbed, the 

 sticky mass is worked on the rolls, mixed with sulphur, etc., 

 and vulcanized. (Badische Anilin und Soda Fabrik. German 



patent No. 307,341.) 



LABORATORY APPARATUS. 



IMPROVED AUTOMATIC BURETTE. 



■"Phe improved auloniatic burette shown in the illustration was 



■*■ devised by Mr. George J. Hough, Bureau ,if 

 Soils, United States Department of Agricul- 

 ture. Its merits are that it requires no bracket 

 and can be quickly cleaned and used for differ- 

 ent solutions. 



The base of the burette consists of a glass 

 tube, a, one-half-inch in diameter, for elevat- 

 ing the solution, surrounded by a much wider 

 tube ; and when inserted in a rubber stopper to 

 fit the solution reservoir, this gives the appara- 

 tus sufficient stability so that it requires no 

 bracket to hold it upright. The tube c is for 



the attachment of a rubber pressure bulb, and 



tube d is closed with the finger when pumping 

 air into the reservoir. The hole h in the outer 

 tube equalizes the pressure in the reservoir and 

 must be above the level of the liquid in 



Automatic 



Burette. 



the reservoir. 



