876 



THE INDIA RUBBER WORLD 



August 1, 1921 



Pages 



New Trade Publications • 834-835 



W-Pi*^ 



Vol. 64 



AUGUST 1, 1921 



No. 5 



TABLE or CONTENTS 



Editorials Pages 



The Fordney Tariff Bill 797 



Science in Rubber Plantations 797 



Standardization and Simplification 797-798 



Detecting the Industrially Unfit •• 798 



Expensive Hoarding • • 798 



As to the "Gyp" . . . • 798 



Minor Editorial 798 



The Rubber Sole Up to Date Illustrated 799-802 



Applying and Repairing Rubber Belting- •. Illustratod 802-805 



An Explosion of Hard Rubber Dust Illustrated 805-806 



The Determining Factors for the Life of a Pneu- 

 matic Tire. By William G. Xelson 806-808 



Interesting Letters From Our Readers . . . • ■ 808 



An Analysis of the Preliminary Summary of the 

 Manufactures of Rubber Goods. Bv Ricliard 



Hoacllev Tiiigley • • '■ Graphs 809-810 



Dynamic Balance and Construction of the Pneumatic 



Tire. By William Roberts •■ Illustrated 811-813 



A Brief Analysis of Tire Fabric Manufacture. By 



H. R. Whitehead Illustrated 814-816 



Chemistry 



What the Rubber Chemists Are Doing. . • 817-819 



Chemical Patents 819-820 



Laboratory Apparatus Illustrated 820 



Pitch Hydrocarbons Used in the Rubber Industry. 



By Frederic Dannerth, Ph. D 821-824 



The Rubber Association of America — Activities of . . . 824 



New Machines and Appliances Illustrated 825-827 



A Xew Tire-Building Core. Hydraulic Press for 

 Applying Truck Tires. Hydraulic Vulcanizing 

 Press. Truck for Carrying Tire Molds and Cores. 

 Inner Tube Wrapping Machine. A New Tire Re- 

 pair Air-Bag. Machine for Scientific Tire Inspec- 

 tion. Portable Electric Grinder. Hermetic Air 

 Bags. Special Tire Repair Machines. 



Machinery Patents •■ Illustrated 827-828 



Machine for Cleaning Plastic Materials. Boots 

 Cured Under Diflercntial Pressure. Sheet Rub- 

 ber Plaiting and Banding Machine. A Swiss 

 Rubber Nipple. Other Machinery Patents. 



Process Patents 828 



Society of Automotive Engineers Specifications for 



Insulated Cables • • • ■ 829-830 



New Goods and Specialties Illustrated 831-833 



Letting the Dealer Do His Share. "Spirahvcave" 

 Portable Cables. Children's Waterproof Waders. 

 Attractive Bathing Caps. A Sports Shoe of New 

 Design. "Autco-Keck" Safety Boot. Water- 

 proof Hat Protector for Men. Rubber Sanitary 

 Napkin Cover. New Line of Rubber Hose. 

 Rubber-Top Mouth for Tobacco Bags. New 

 Type of Golf Sole and Heel. Staggered Block 

 Tire. A Rubber Bottle-Container. Dust Cap 

 and Tire Gage Combined. "2-PIex" Insulating 

 Tape. Scientific Nursing-Bottle Nipple. New 

 "Fleetfoot" Sandal. Cord Tire from the Mid-West. 



Obituary Record 834 



W. F. de Bois Maclaren. C. Measure. 



The Editor's Book Table 834 



"Industrial Democracy and the Better Boss." 

 "Trade Tests, the Scientific Measurement of 

 Trade Proficiency." "American Chemistry: A 

 Record of Achievement, the Basis for Future 

 Progress." 



Inquiries and Trade Opportunities 



Judicial Decisions 



Customs Appraisers' Decisions . . . 



Brushes in Tire Making and Rubber Manufacture. 



Illustrated 



American Rubber Trade — News and Personals 



New Incorporations • • 



Financial Notes 



Rubber Stock Quotations 



Dividends 



East and South. 



By Our Correspondent — Illustrated 

 New Jersey. ..By Our Correspondent — Illustrated 



Rhode Island By Our Correspondent 



Massachusetts By Our Correspondent 



Akron Rubber Industry Approaching Normal 



Conditions By A Special Correspondent 



Ohio By Our Correspondent — Illustrated 



Mid- West By Our Correspondent 



Pacific Coast By Our Correspondent 



Tire Factory Repair School Illustrated 



The Gregory Tire & Rubber Co., Ltd.. Illustrated 

 The Chase Caterpillar Track Illustrated 



Foreign Rubber News 



The International Rubber Exhibition.. Illustrated 

 Peachey Process Demonstration Plant .Illustrated 



Great Britain 



Charles E. Speaks Portrait and Sketch 



Europe 



Foreign Tariffs 



Miscellaneous Foreign News 



Brazil's Rubber Trade During 1920 



Planting 



Far East 



835 

 835 

 835 



836 



837 



837 



837-838 



838 



838-839 

 839-840 

 840-841 

 841-842 



842-843 



843-845 



845-846 



846-847 



848 



848 



848 



849-850 



850 

 851-852 



852 

 852-853 



853 

 854-855 



857 



855-857 



Patents Relating to Rubber 858-859 



United States. Canada. L^nited Kingdom. 

 France. Germany. 



Trade Marks 859-860 



United States. United Kingdom. New Zealand. 



Designs Illustrated 860-861 



United States. Germany. 



Casting for Toy Balloons Illustrated 861 



Pneumatic Tire Tread Designs Illustrated 862 



Ocean Rates from New York on Tires, Tubes, Mechani- 

 cal Goods, Clothing, Footwear, and Druggists' 

 Sundries . 



Markets 



Crude Rubber 



New York Average Spot Rubber Prices 



Highest and Lowest New York Prices 



Amsterdam Rubber Market 



."Kntwerp Rubber Market 



Hamburg Rubber Market 



Singapore Rubber Market 



Reclaimed Rubber 



Rubber Scrap 



Cotton and Other Fabrics 



Chemicals and Other Ingredients 



Statistics 



Canada, Statistics for April, 1921 



Ceylon Rubber E.xports 



Federated Malay States Rubber Exports.... 



Italy, Statistics for January, 1921 



Java Rubber E.xports 



Malaya Rubber E.xports 



Straits Settlements Rubber Exports 



United Kingdom, Statistics for May, 1921... 



L'nited States; 



Crude Rubber Arrivals at Atlantic Ports as 



Stated by Ships' Manifests 866-867 



Custom House Statistics 870-871 



Exports of India Rubber Manufactures During 



April, 1921 (By Countries) .".868-869 



Imports by Months for 1921 870 



Statistics for April, 1921 869 



863 



864 

 865 

 865 

 865 

 865 

 865 

 865 

 865 

 863 

 872-874 

 874-875 



871 

 866 

 866 

 872 

 866 

 865 

 866 

 872 



