48 



THE INDIA RUBBER WORLD 



[October 1. 1912. 



Austria-Hungary. 



Belting, hose and packing $ 1,975 



Boots and Shoes 23,499 



All other manufactures 13,093 $ 38,567 



Total $2,041,851 



Great Britain. 1911. 



Belting, hose and packing $ 186,839 



Boots and shoes 631.421 



Tires 1,231,894 



All other manufactures 1,115.092 $3,165,246 



France. 



Belting, hose and packing $ 3.319 



Boots and shoes 75,885 



Tires 194,008 



All other manufactures 1 18,775 $ 391 ,987 



Italy. 



Belting, hose and packing $ 2,181 



Boots and shoes 74,856 



Tires 18,369 



All other manufactures 43.792 $ 139,198 



Austria-Hungary. 



Belting, hose and packing $ 8,676 



Boots and shoes 19,376 



Tires 329 



All other manufactures 9,658 $ 38,039 



Total $3,734,470 



Grouping the results the following position is shown : 



TABLE D. 

 EXPORTS OF RUBBER GOODS TO FOUR LE.^DING MARKETS. 



1907. 1911. 



Germany $5,553,625 $7,823,000 



United States 2,041,851 3.734,470 



Thus, while Germany has gained at the rate of 40 per cent, 

 the United States has progressed in more than double that propor- 

 tion. American manufacturers should be thereby encouraged to 

 persevere in their efforts to catch up with their German com- 

 petitors in the export field. 



UNITED STATES TRADE WITH GERMANY. 



American imports of rubber manufactures from Germany, 

 which in 1907 represented $1,028,746, afterwards dropped by 

 degrees, amounting in 1911 to $438,302. United States exports 

 to Germany of rubber manufactures meanwhile rose from 

 $475,478 in 1907 to $711,831 in 1911. 



NEW PATENT LEGISLATION IN HOLLAND. 



Official announcement has been made of the going into effect 

 on June 1, 1912, of the new Dutch law referring to patents. The 

 patents issued under its provisions cover Holland, with its colon- 

 ies and dependencies. It has a retroactive effect, extending back 

 for a year. 



In view of the increased cultivation of rubber in the Nether- 

 land Indies, inventors of planting machinery will doubtless see 

 the advantages of availing themselves of the new Dutch law. 



"SXTPEA ETTBBEE." 



During the quest after synthetic rubber, a product, named by 

 the inventors "Supra Rubber," seems to have been obtained by 

 the syndicate, which is said to promise a fair degree of success. 

 This is a filling substance to be used in conjunction with high- 

 grade natural rubber. Samples of a compound, reputed to have 

 been composed of 50 parts supra rubber to 100 parts of fine Para, 

 have been shown and have proved to be strong and resilient. As 

 the estimated cost of "supra rubber'' is six pence per pound, its 



possible use as a filling has a practical interest, apart from its 

 association with the general question of synthetic rubber. 



THE FEANZ CLOUTH COMPANY 50 'XEAKS OLD. 



On the 11th of September last the firm of Franz Clouth, Coln- 

 Nippes, Germany, attained a full half century, and commemorated 

 that event with various exercises. On the evening of the 10th, 

 the night before the company's birthday, a memorial service was 

 held at the grave of the company's founder, Mr. Franz Clouth, 

 who died two years ago. On the next day a celebration was held 

 in the auditorium of the Civil Casino, which was attended by the 

 members of the Clouth family, employes of the firm, a deputa- 

 tion of workmen and the local authorities, together with repre- 

 sentatives of the manufacturing industry and of commerce. 

 These exercises were followed by a luncheon, and in the evening 

 a banquet was given at the Zoological Gardens, after which there 

 was an informal gathering of those interested in the firm and 

 their many friends. 



ASBESTOS AND RUBBER COMPOUNDS. 



'T'HE question of asbestos and rubber compounds has recently 

 ^ been discussed in the "Gurami-Markt," with special refer- 

 ence to "Vulcan-Asbestos" and "Ite" compounds. 



"vULCAN-ASBESTOS." 



This insulating material is a gummed felt, composed of asbestos 

 fibers, with coloring and filling substances. In consequence of 

 the regular distribution of the asbestos fiber, a felted slab is ob- 

 tained, which meets the highest electro-technical requirements. 

 Subjoined is the method of producing these slabs: 



The washed rubber, as shown in the annexed compound, is 

 kneaded in a kneading mill, with 11 pounds of light benzine ; 

 while the other ingredients are added by degrees. The mass is 

 kneaded until a uniform solution is produced, which process may 

 last two hours. Only then is the asbestos fiber, ground to the 

 fineness of flour, slowly added; the whole being then kneaded 

 for an hour. As soon as the mass has become thoroughly mixed 

 it is laid out in large frames, the benzine is evaporated in a 

 vacuum cabinet and the slabs dried. The latter are then placed 

 between plates of zinc under the hydraulic press, at a pressure of 

 284V2 pounds per square inch. Finally, the pressed slabs pass 

 through the glazing calender, and are ready to be used for the 

 manufacture of magnet-spools, rollers, sounding boards, etc. 

 The vulcanization compound follows ; it being also possible to 

 vulcanize the slabs in the press, under hydraulic pressure. 



RECIPE FOR COMPOUND. 



Grams. Pounds. 



Massai 2,500 5.5115 



Colombia 2.500 5.5115 



Odorless rubber substitute 2,000 4.4092 



Reclaimed rubbers 2.000 4.4092 



Sulphur 2,.S0O 5.5115 



Golden sulphide of antimony 4.000 8.8184 



Kaolin 4.500 9.9207 



Sulphate of baryta 4.000 8.8184 



Japan red 4.500 9.9207 



Zinc white 4,500 9.9207 



Linseed oil 1.000 2.2046 



Calcined magnesia 500 1.1023 



Asbestos fiber 16.000 35.2736 



Burgimdy pitch 1.000 2.2046 



"ite" compounds. 



It is remarked that the demand for ordinary- rubber packing 



slabs has declined in proportion to the extent to which a tendency 



has been displayed for the use of superheated steam and higher 



steam pressures. At a pressure of 12 atmospheres (about 160 



