160 



THE INDIA RUBBER WORLD 



[February i, 1906. 



[Abstracted in thb Official Journal, Df cumber jo, 1905.] 



18,545 (1904). Device for detecting punctures in tires. T. Mitch 

 ell, Manchester. 



18,588(1904). Cap for jars and feeding bottles. [To prevent tlic 

 rolled edge of a teat or cap from becoming permanently 

 stretched, owing to imperfect vulcanization, a spring is in- 

 serted.] M. I). Armstrong, Forest Gate, Kssex. 



18,651 (1904). Apparatus for separating India-rubber from waste. 

 H. Penther, Manover, Prussia, 



*i8, 758 (1904). Dental syringe. C. G. Myers, Cleveland, Ohio. 



l8 894. Heel protector A. V. Campbell, Homsey. 



(AllSTRACTKI) IN THE OFFICIAL JOURNAL DkCKMHEK J9 1905 1 



19,012 ( 1904). Non elastic tire. [.V series of wooden tread blocks 

 provided with a rubber seating are secured by bolts to the 

 felloe.] \V. G. Titherington, Liverpool, and F. J. Mclirearty, 

 Bottle, Lancashire. 



19.033 ('904)- Heel protector. A. Rooney, Bolton, Lancashire. 



19.093 (J904I- Klastic tire [laterally corrugated to form treads, 

 having hoops of ebonite vulcanized to the base]. C. Challiner, 

 Manchester. 



•19,117(1904). Cushion tire and cover for the same. H. p;. Irwin, 

 Galesburg, Illinois. 



'9.197 (■904)- P^lastic tire [with holes in rows in the tread por- 

 tion, the holes extending partially through to the base of the 

 tire]. Same. 



19,344(1904). Boot. [To increase elasticity an India-rubber pad 

 is inserted between the inner and outer sole ] K. J. Burnett, 

 Woolwich. 



19.362 (1904). Boot. [To facilitate ease of repairs an edging is 

 attached to the insole so as to form a recess in which are placed 

 removable blocks of rubber held in position bj' a plate ] A. 

 G. Grice, Carnoustie, Forfarshire. 



*I9,369 ( 1904). Elastic tire [held in position by bolts which are 

 free to move on washers of leather]. C. H. Bryan, Chicago, 

 Illinois. 



19.384(1904) Detachable band for tires, to prevent slipping and 

 puncture. G- J. Arnold, Torquay, Devonshire. 



19,393(1904). Pneumatic tire. [A channel rim carrying an in- 

 flated tire is secured on the metal rim by bolts]. E. C. Defil- 

 ippi, London. 



19,404 (1904). Tire cover. [Metal shoes hinged together to form 

 a band to prevent slipping and puncture.] II. P. Jump, Lon- 

 don. 



THE FRENCH REPUBLIC. 



Patents Issued (With Dates of Application.) 



355,286 (June 16, 1905). Soci^t^ anonyme des Usines deGraviguy. 

 Metal rim for pneumatic tires. 



355.339 (June 19). G. Muller. Process for mending torn pneu- 

 matic tires. 



350,149 (Sept. I, 1904). Societe Jules Jean et Cie.,et M. Ranerat. 

 Process for condensing the vapors of volatile solvents. 



355,398 (June 20, 1905). W. Vale. Pneumatic tire. 



355,470 (June 22). A. Falque. Tire. 



355.472 (June 23). J. Van Langcuhaven. Device for protecting 

 pneumatic tires. 



355,630 (June 26). E. Lejeune. Composition for automatically 

 stopping tire punctures. 



355,634 (June 26). C. R. Bullard. Wear-proof pneumatic tire. 



355,621 (June 29). Detachable shoe pads for horses. 



355.496 (June 23). G. A. Lefebore. Apparatus for extracting 

 latex from rubber plants. 



355.61 1 (June 5). K. Von Stechow. 

 from rubber plants. 



355,642 (June 26). G. L. Pelicier. 

 tires to wheels of heavy vehicles. 



355.649 (June 27). G. L. Krol. Means of preventing side crack- 

 ing of motor tires. 



355.724 (June 17). Fourniand. Pneumatic tire designed not to 

 blow out or sidecrack. 



355.740 (June 27). Bowleyand Haumer. Process forthc manufac- 

 ture of rubber goods. 



Method of extracting latex 

 Method of attachinti rul)l)er 



WHAT DR. KITTLER KNOWS (?) ABOUT RUBBER. 



[from " GUMMI ZEITUNG " (DRESDEN) OCTOBER 6.] 



MARVELOUS must be the rubber shoes made after the 

 method described by Herr Dr. Kittler. This gentleman 

 contributed to several daily papers an article under the heading 

 " Der Gummi," which in so (ar as it relates to the rubber tech- 

 nique is criminally incorrect. Some jester must have taken ad- 

 vantage of the Doctor's credulity, for he could never have seen 

 or read such perversity. Just listen : 



" The extraordinarily simple manner of manipulating rubber 

 makes it easy for us to comprehend the manufacture of any ar- 

 ticle in ordinary use made of rubber. We will take (or instance 

 the well known rubber shoe. It is made by various methods, 

 but generally this way : The sole and upper are specially shaped 

 and then pasted together on a pattern. The material, before 

 shaping, is of course dyed black, which is accomplished by 

 kneading it thoroughly, while still in the crude state, with lamp- 

 black ; a gentle heat being applied to render the rubber more 

 pliable. For this every factory has its special formula, but the 

 main principle, the coloring of the crude material and the shap- 

 ing, by kneading, before the rubber is vulcanized, as well as the 

 pasting together of the component parts, is always the same. 

 After color and shape have been imparted to the rubber shoe 

 in this manner it is made hard by hard vulcanization. This is 

 eflfected by adding from 30 to 35 per cent, of sulphur, alter which 

 it is subjected to heat, at 135 degrees, for from 5 to 6 hours. 

 This accomplished, the rubber shoe is complete, and it mere- 

 ly remains to give it a fine black gloss. Special polishing 

 machines are employed for this purpose, by which the exterior 

 is polished with powdered pumice stone. Many rubber shoes 

 have a cloth lining which is made to adhere to the sheet rubber 

 by pressing it on between two rollers." 



And further : " Although the rubber industry has attained a 

 high degree of perfection several defects are still quite appar- 

 ent. First, this one, that as yet it has been impossible to check 

 the gradual hardening of rubber goods, tending to render them 

 unserviceable ; and secondly, that no particular usefulness has 

 been found for old rubber goods, especially, that no cheap pro- 

 cess is known by which the sulphur contained therein can be 

 reclaimed. The solving of these problems would be an enor- 

 mous advance in the economy of the whole rubber industry." 



Tears of laughter have been shed by us on reading this, and 

 our readers no doubt will be similarly impressed on reading 

 such wisdom. The problem " to reclaim the sulphur from old 

 rubber in a cheap manner," isoertainly the acme of the reclaim- 

 ing science. Saint Bimbam ! 



RUBBER IN SOUTH INDIA. 



[Note.— Printed copies of specifications of French patents may be obtained 

 from R. Bobet, Ingenieue-Counseil, i6 avenue de Villiers, Paris, at 50 cents each. 

 postpaid.] 



'nr^HE Periyar Rubber Co., Limited, has been formed to ac- 

 -^ quire the Thattakaad estate on thePeriyar river, in Tra- 

 vancore, with an authorized capital of 1,000,000 rupees [=$324,- 

 444]. The initial issue is 400,000 rupees in shares, of which the 

 vendors take one half (in addition to 70.000 rupees in cash) 

 and the other half, issued to the public, was applied for in 

 advance. There are 800 acres of land, of which 230 acres were 

 planted with Paia rubber In 1902; 200 acres in 1904; and 70 

 acres this year, and the remainder is reported to be adapted for 

 rubber planting. The shares offered to the public will provide 

 the cash part purchase price and the upkeep of the estate until 

 1908, when the yield of rubber is expected to make the estate 

 self sustaining. In addition to the rubber above mentioned, 

 the equivalent of 50 acres of Ficus elastica has been planted 

 along the edge of the river. 



