November i, 1906.] 



THE INDIA RUBBER WORLD 



35 



COMPOUNDING RUBBER MILK. 



W^ 4^.^^ 



THE INDIA RUBBER PUBLISHING CO. 



4^ 



Published on the Ist of each Month b; 



No. 35 WEST 21st STEEET, NEW YOEK 



CABLE ADDRESS: IRWORLD, NEW YORK. 



HENRY C. PEARSON, 



KDI roK. 



HAWTHORNE HILL, 



ASSOLIA IE. 



Vol 35. 



NOVEMBER 1, 1906. 



No. 2. 



:lui>auKiPTiONB: $3.au per year, (1.16 Cor six montlis, postpaid, for the United 



stales and depeiidencle?, Canada, and Mexico. To all oilier coun- 

 tries. j;i..M)(or eiiulvalent funil>'i pel year, postpaid. 

 4DVKKTI8INO: Kates win be made known on application. 



COPYRIGHT. 1906, BY 



THE INDIA RUBBER PUBLISHING CO. 



Entered at New York Post Office a-i mall matter of tbe second-class. 



TABLE OF CONTENTS. 



rA( 



Editorial: 



Compounding Rubber Milk 



The Oooiis Maile of Rubber 



Ceylon's Rubber Show 



Second Hand Macliinery 



A French Suggestion 



Minor Ivlitorials 



Acre District Rubber Affairs 



Americans in Congo Rubber . 



The Use of Magnesia with Rubber Compounds Wittier Each, Ph. D. 



Rubber Planting in the Far East 



The Sources of the Latex of Rubber 



International Trade in Rubber Goods 



The India-Rubber Trade in Great Britain... Our lifgular Correspomlint 

 L I he Price of Rubber Si-rap. Seciitl (Ju:ility Surgical Rubber H. 



Cutien .V Sons. Rubber dillars. Monopoly in Waterproois. ForUi- 



Li'iniiiK New Book. Notes.] 



Recent Rubber Patents 



[United Stales. Great Britain. France.] 

 New Goods and Specialties in Rubber 



[Or. Decker's Fountain Syringe. Buck-Skin Rubber Lined Tobacco 

 Pouch. Elastic Tread Horseshoe. (Goodrich Surgical Basins Water- 

 proof .-Vutoniobile -Apparel. Colditz Self Renewable Heel. The Has- 

 kcll-Match C.olf Ball. Allen Tire Holders and Cases.] 



The Late George F. Hodgman 



[Portrait.] 



The Rubber Show at Peradeniya 



Tires at the Vanderbilt Cup Race 



The Tradein San Francisco A Resirlenl Cnrr'^pnndenl 



Miscellaneous : 



.■Mutiiiiiiiiii Flake in Rubber Compounds 



The ICditor's Book Table 



Heavy Rubber Footwear in Russia 



Smooth Interiors for Fire Hose ^ Illuslratioiis 



The Bristol Recording Cage / III iisl ration 



Automatic Tape Cutting Machine / Illustration 



Mexico's Guayule Rubber F'actories 



Some Wants of the Trade 



Petrolatum in Rubber Compounding 



India-Rubber Goods in Commerce 



Process for .Soling Canvas Shoes / Illustration 



Sale of Crtide Rubber by .Analysis 



New Trade Publications 



The Friction Tape Industry 



The Cotton Duck Situation !!!.!!!!... 



Electric Dieing-Out Machine / Iliustration 



Rubber Plantations Injured 



News of the American Rubber Trade 



The Rubber Trade in Trenton 



Rubber Trade at .\kron 



Review of Crude Rubber Market 



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'T^HERE is very much interest just now in the Far 

 -L I-'ast, particularly in Ceylon, over the experiments 

 of Mr. Kehvay Banilier in compounding rubber latex. 

 Not a few predict a revolution in rubber manufacture 

 and its removal from the temperate zone, where it now is 

 carried on, to the tropical or sub tropical countries, where 

 rubber is i)roduced. 



It is not the writer's wish to appear in the slightest 

 degree to underrate Mr. Bamber's ability nor to ignore 

 the excellent work that he has done in connection with 

 cultivated rubber. He is an intelligent, scholarly, inves- 

 tigator, but he does not understand the rubber manufac- 

 ture. If the reports of the general .scope of his processes 

 are to be believed, he takes Para milk, adds to it a pro- 

 portion of sulphur, and, if the goods are to be other than 

 "pure gum", adds also litharge, whiting, lampblack, 

 barytes, zinc oxide, or whatever of the many metallic 

 oxides or earthy materials are called for to produce cer- 

 tain finished goods. This dough he plans to ship to the 

 rubber manufacturer ready for the warmer and the cal- 

 ender or the churn and the spreader. 



The advantage claimed is that washing, drying, break- 

 ing down, and mixing are accomplished far more easily 

 and cheaply than by the present practice, and therein is 

 a saving in dollars and cents. Just what this saving 

 amounts to per pound is not stated, but it cannot be 

 much. As he is working on Ceylon rubber milk, it is 

 only fair that the basis of compari.son should be Ceylon 

 rubber. As it comes to the market to-day, clean and 

 almost dry, a very short time in the dryer — a few hours — 

 makes it ready for the mixer. It is soft in texture at 

 best and needs little breaking down before the com- 

 pounds are added'. Taken as a whole, it is doubtful if 

 tile cost of handling up to the calender or spreader is yi 

 of a cent a pound. 



Now against this must be put the cost of freight for 

 the compounds to Ceylon, and the same cost back to the 

 consuming countries, plus Mr. Bamber's cost of mixing. 

 If litharge, whiting, and all the rest of their kin were 

 found wild in the island, or were at present in an ad- 

 vanced state of cultivation, it would be a bit better, but 

 only one compounding ingredient is at present indige- 

 nous to Ceylon and that is graphite, which certainly can- 

 not be added to tire stocks for example. Further than 

 this, how is any one going to compound for factories 

 that have their own formulas, and that do not and can- 

 not explain them understandingly to a scientist thous- 

 ands of miles away ? The rubber manufacturers would 

 never dare to put stock of another man's compounding 

 into their goods, unless at a vastly decreased first cost, 

 and then only after careful test and analysis of each lot. 



Suppose a few tons of Bamber's red antimony stock 

 for high grade valves was started from Ceylon, in the 

 hold of a steamer that traversed the Indian ocean and 

 the Red sea — not to .speak of the Mediterranean in sum- 



