572 



THE INDIA RUBBER WORLD 



[July 1, 1919. 



TRADE NOTES. 



The Dominion Asbestos & Rubber Corp., 154 Nassau street, 

 New York City, has recently opened branches in Albany, New 

 York, Atlanta, Georgia, and Allentown, Pennsylvania. The 

 company increased its capital to $100,000 the first of the year. 



The Mechanical Tire Co., Inc., 49 North Third avenue, Mt. 

 Vernon, New York, has been recently formed, with a capital 

 of $10,000, for the purpose of rebuilding pneumatic lires with a 

 3,000-mile guarant)'. The plant is in operation and the business 

 prospects are very good. Aaron Rcrs, who is well-known in 

 the rubber scrap trade, is president and Charles S. Bornheim is 

 treasurer. 



The Mileage Tire Co., Inc., 2118 South Michigan avenue, 

 Chicago, Illinois, is agent for the "Dri-Cure" retreader and 

 uses the "Drico" rebuilding process in retreading tires. It has 

 nine "Dri-Cure" molds in operation and besides the retreading 

 of tires, sells the finished product, retreading equipment, tools, 

 rubber stocks, etc. 



The Alliance Tire Co., 259 West 57th street, New York 

 City, is now handling the Goodrich line of "Safety Tread" tires 

 and tubes. 



The Pennsylvania Rubber Co.. Jeannette, Pennsylvania, has 

 opened an office in the Woolworth Building, New York City, for 

 its export department. F. B. Beck will be in charge during 

 the absence of D. D. F. Yard, who is going to the Far East 

 on a business trip for the company. 



The Republic Rubber Corp., Youngstown, Ohio, has recently 

 opened a branch at Charlotte, North Carolina. 



The Advance Rubber Co., Brooklyn, New York, is planning 

 the erection of a one-story plant, 200 by 130 feet, in which it 

 will install machinery for the manufacture of high-grade fabric 

 and cord tires. 



The Excello Tire & Rubber Co., 215 North 15th street, 

 Philadelphia, Pennsylvania, has increased its capital stock from 

 $500,000 to $1,000,000, including $400,000 preferred stock and 

 $600,000 common, par value $10. J. C. Brennan is president 

 of the company, which was established in 1914 and manufactures 

 "Xlo" tires and red inner tubes. 



The Majestic Tire & Rubber Co., Indianapolis, Indiana, has 

 increased its capital stock from $100,000 to $250,000. 



The Indiana Rubber & Insulated Wire Co., Jonesboro, In- 

 diana, is building a new three-story structure, with basement, 

 125 by 60 feet, to be used as a warehouse and shipping room. 

 The company manufactures automobile, motorcycle and bicycle 

 tires and soft rubber specialties as well as insulated wire and 

 cables. The officers are: A. F. Seiberling, president; N. Huber, 

 vice-president; S. H. Miller, treasurer, and R. W. Seiberling, 

 secretary and general manager. 



The Hydraulic Press Manufacturing Co., Mount Gilead, Ohio, 

 has opened a branch office in the Union Bank Building, Pitts- 

 burgh, Pennsylvania, under the management of J. E. Holveck. 



Wni. B. Scaife & Sons Co., Oakmont and Pittsburgh, Penn- 

 sylvania, has opened a sales and engineering office at 38 South 

 Dearborn street, Chicago, Illinois, with Charles F. O'Hagan, 

 formerly chief engineer of the company at Pittsburgh, as resi- 

 dent engineer and manager. This concern manufactures steel 

 tanks for air, gas and liquids, steel shipping drums and range 

 boilers, and the well-known Scaife water softeners and filtering 

 equipment. 



The Du Pont Chemical Co. has removed its executive and 

 sales offices to new quarters on Vandever avenue, east of 

 Market street, Wilmington, Delaware. 



The Washington Rubber Co., Washington, Pennsylvania, re- 

 cently elected the following officers: J. L. Lockhart, president; 

 S. L. McCurdy, vice-president; B. F. Mevay, Jr., secretary and 

 treasurer; Burt S. Shafer, John W. Warrick, T. W. D. Hieber, 

 and T. R. McKennan, directors. 



Tlic Gales Rubber Co.. Denver, Colorado, is building five ad- 

 ditional units to its factory. Two of these are four stories high 

 with basement, of steel-reinforced concrete. One is reinforced 

 concrete, two stories with basement. Two are brick with steel 

 beam reinforcements. The concrete buildings are to be faced 

 with pressed brick to harmonize with the architecture of the 

 other buildings of the plant. All are expected to be finished and 

 in use before the end of the summer. 



The Pacific Trading Corp. of America, 90 West street. New 

 \ork City, which was recently incorporated in New York and 

 lias affiliated companies in Europe and (he Far East, will in 

 future handle all rubber and other export and import business 

 in New York, except where buyers prefer to deal directly with 

 Far Eastern concerns. C. C. Hailing is president and general 

 manager, and F. H. Lyon, manager of the rubber department. 



The American Chicle Co., Long Island City, New York, is 

 building a new factory to occupy the full block, 200 by 600 feet, 

 at the Degnon Terminal. It will be six stories high, of rein- 

 forced concrete, and will cost $2,000,000. 



The Tamms Silica Co., Stock Exchange Building. Chicago, 

 Illinois, is selling amorphous silica to manufacturers of rubber 

 erasers. 



The Keystone Tire & Rubber Co., Inc.. 1877 Broadway, New 

 York City, has contracted to take the entire tire output of 

 the Batavia Rubber Co., Batavia, New York. 



TENSILE STRENGTH OF RUBBER-SULPHUR MIXTURES. 



O. De Vries and H. J. Hellendoorn, using a mixture of 92^ 

 rubber and 7'/2 sulphur, cured in live steam at 148 degrees C, 

 for increasing periods, have determined that the tensile strength 

 for short cures increases rapidly with increasing cure till it 

 reaches a maximum at two hours' cure with a coefficient of 

 vulcanization of 4.99 per cent. The tensile strength then de- 

 creases and finally the region is reached where the rubber be- 

 comes brittle and gives low and irregular breaking points. 



Maximum tensile strength is important in several ways. (1) 

 It is a property of more definite and typical character than the 

 tensile strength at an intermediate cure, and therefore better 

 suited to express and compare the properties of rubber in this 

 respect. (2) From a practical point of view a maximum of any 

 property is of special value for testing purposes, as small devia- 

 tions due to experimental error in the neighborhood of the 

 maximum have little influence on the numerical result which 

 is to be determined. 



OTHER MIXTUHES. 



The relationships existing for mixtures of 92J/2 parts of 

 rubber with lYz parts of sulphur do not obtain with other com- 

 pounds as shown by the results published by Gottlob', Eaton 

 and Grantham", Spence^ P. Breul', Stevens' and De Vries and 

 HeIlendoorn^ 



Systematic investigation of the relation between tensile 

 strength and state of cure for mixtures containing other com- 

 pounds than sulphur only have not yet been published. There are 

 enough data available, however, to allow the conclusion that 

 quite distinct forms of curves will be obtained with these com- 

 pounds. It is to be hoped that the systematic investigation of 

 at least some of the more simple and most used of them will 

 soon reveal the connections governing these cases, and so form 

 a scientific basis for testing the rubber in such mixtures. 



Money must work to 

 Savings Stamps. 



cceed. Put yours to work in War 



•Gummi-Zeitiinp." .10 (1916). 306 and 

 'Tournal of the Society of Chemical ] 

 ■KoUoid-Zeitschrift," 11, 278. 

 "Le Caoutchouc et La Gutta Percha.' 



page 5298. 

 '." 35. 

 1, pages 19 and 32. 



