268 



THE INDIA RUBBER WORLD. 



[May 1, 1911. 



421,118 (October 5, 1910). Societe Saint Cou, Caplen Bauer & Co. Wheel 

 tread of transverse leather bands for the wheels of heavy vehicles. 



421.144 (October 6, 1910). F. Sobolcwski. Pneumatic wheel. 



421,402 (October 13. 1910). W. Holecck and L. Letz. Process of manu- 

 facturing envelopes for pneumatic tires and non-skidding treads. 



421,354 (October 12. 1910). A Dejardin. Grinding apparatus (or rubber 

 plants and vines and other substances. 



421,333 (October 11. 1910). A. T. Collier. Process of manufacturing a 

 flexible substance, with the aid of rubber and other similar substances. 



[Note — Printed copies of specifications of French patents can be ob- 

 tained from R. Robet, Ingenieur-Conseil. 16 avenue dc X'illier, Paris, at 

 50 cents each, postpaid.] 



THE THERMOID-LA FLEUR TIRE. 



A DISTINCTIVE feature of the automobile tire illustrated 

 **■ here is the tread surface, composed of a special wear 

 resisting fiber, made moisture proof by a secret process, and 



Section of Thermo»-T,a FiEUR Tire. 



[Showing position of fioer in special tread.] 



inseparately combined with rubber, so that the end of each 

 fiber extends to the surface and wear and tear are resisted to an 

 unusual extent. [Thermoid Rubber Co., Trenton, N. J.] 



"TIBES: THEIR USE AND ABUSE." 



At a recent regular monthly meeting of the Electric Vehicle 

 Association of America, the topic of the evening was an ad- 

 dress, on the above subject by D. C. Swander, of the Firestone 

 Tire and Rubber Co., Akron, Ohio. He embodied some useful 

 practical information on the care of tires in his paper, including 

 a table of the tire sizes considered best for specified loads and 

 a discussion, consisting mainly of questions addressed to the 

 author followed the reading of the address. The Firestone Tire 

 and Rubber Company have republished the address, which con- 

 tains much real information of value to all interested in motor 

 truck tire equipment, in pamphlet form, with illustrations of the 

 Firestone side wire channel and flange tire types, copies of 

 which can be obtained from the company on request. 



A NON-SKID GRIP FOR SOLID TIRES. 

 A NEW non-skid grip for solid tires, has been invented by 

 Leonard Gaylor, Stamford, Conn. It is a two-part double ring 

 that encircles the wheels, on each side of the felloes the rings 

 being connected by a large number of narrow straps bent over 

 the tread surface and which form the non-skid grips. The two 

 parts of the ring are hinged together at one connecting point 

 and bolted together at the other, and can be made adjustable at 

 the latter point, if desirable. The device, owing to its flexibility, 

 does not interfere with the resiliency of the tire and the latter 

 takes care of any bending strain brought to bear against the ring. 

 It can be adjusted to fit wheels and tires of different sizes. 



GROWTH or THE CHEWING GUK_ BUSINESS. 



Since the incorporation, in 1899, of the American Chicle Co., 

 with a capital of $9,000,000, the business of manufacturing 

 chewing gum has grown enormously. The American Chicle 

 Co. consolidated six young concerns having total average earn- 

 ings of $540,000 and the new company was reported as con- 

 trolling 85 per cent, of the entire trade. The fact that the 

 company paid, last year, a dividend of 6 per cent, on $3,000,000 

 of preferred capital stock and 18 per cent, on $6,000,000 of com- 

 mon stock, affords an indication of its prosperity. 



The growth of the business was revealed when in the latter 

 part of 1908 a petition for a reduction in the import duty on 

 chicle gum was presented to the Committee on Ways and Means 

 of Congress, by the American Association of Chewing Gum 

 Manufacturers. Outside of the American Chicle Co., which, as 

 above stated, had merged six concerns, it bore the signatures of 

 17 independent companies. Since the above date, five of the 

 more important of these independent concerns hav^ been con- 

 solidated by the formation, in 1909, of the Sen-Sen Chiclet Co., 

 a Maine corporation with a capital of $21,700,000 in bonds and 

 $4,000,000 in stock. 



Can.\da, it seems, is to figure more largely in the chewing 

 gum trade. Letters patent incorporating the Canadian Chewing 

 (jum Co., with $1,000,000 capital were recently issued under the 

 seal of the secretary of state of the Dominion. The chief 

 place of business is to be in the city of Toronto. The incor- 

 porators named in the official notice are Charles Forsyth 

 Ritchie, barrister at law; James Henrj' Oldham, student at law; 

 and Margaret Cassie Fenwell, Genevieve Ozburn, and Lily Hull, 

 stenographers — all of Toronto. The chewing gum industry has 

 been carried on in Canada for some time. When the American 

 Chicle Co. was incorporated, in June, 1899, one of the six con- 

 cerns participating was S. T. Britten & Co., of Toronto, reported 

 to be averagitig $4,000 in profits a year, and Mr. Britten was one 

 of the original directors. 



The new Canadian cotnpany starts out as "Successor to Ameri- 

 can Chicle Co. and Sen-Sen Chiclet Co.," with offices at No. 

 405 Logan avenue, Toronto. The Sen-Sen Chiclet Co. at its 

 organization took over the business of Frank H. Fleer & Co., 

 Inc., of Philadelphia, with a branch factory in Toronto, and the 

 business of this company has since sustained close relations with 

 that of the American Chicle Co. The allied companies conduct 

 their business in Europe under the style Tutti-Frutti Sen-Sen 

 Co., Limited, of London, organized in May, 1910. 



ATTACHING RUBBER TO LEATHER. 



Owing to the grease the last-named substance contains, it is 

 very difficult to secure rubber to a leather surface. The Gumtni 

 Zcitnng recommends, as best adapted to accomplish the purpose, 

 quick, cold vulcanization process, using strong chloride of sul- 

 phur solution. The leather must first be superficially freed from 

 grease by treatment with benzine, applied by means of a brush 

 or sponge, which dissolves the grease and carries it into the in- 

 terior substance of the leather away from the surface. It is also 

 recommended to apply powdered pumice stone, heavy spar, chalk 

 or some similar substance to the dried leather surface after 

 washing out the grease, not using too much however as this 

 would form a dust layer between the rubber and the leather and 

 prevent adhesion. The rubber surface must be coated with a 

 rubber solvent or cement, so that its substance when pressure is 

 applied, will be forced into the porosities of the leather, and it 

 should be allowed to dry well on the rubber before the two are 

 brought together. If the work is given proper time to dry after 

 vulcanization, a good adhesion can be effected it is claimed in the 

 manner above described. 



"Rubber Tires and All About Them" 

 who has to do with tires. 



-a boodk for everybody 



The accepted authority on South American rubber- 

 Rubber Country of the Amazon," by Henry C. Pearson. 



-"The 



