

THE INDIA RUBBER WORLD 



[September 1, 19LS. 



HARD RUBBER ENGRAVING MACHINE. 



Gura-F** 



Vol. 52. 



SEPTEMBER 1. 1915 



No. 6. 



TABLE OF CONTENTS. 



Editorials: Pages. 



War-Boomed Business When the War Is Over 639 



Gift That Is Worth a Second Thought 640 



Some Interesting Current Rubber Statistics 640 



Being Independent When You're Not 640 



Will Brazil Valorize Again? 640 



Forty Millions for Possible Punctures 641 



Hard Times and the Chewing of Gum 641 



Minor Editorial 641 



The Story of Gutta Percha— II 



a 642 



What the Rubber Chemists Are Doing 646 



Manufacture of Balloon Fabrics in Europe 



Illustrated 649 



Rubber Substitutes and Their Analysis 652 



New Rubber Goods in the Market 



Illustrated 654 



Editor's Book Table 



Illustrate ■■ 657 

 New Trade Publications 658 



New Machines and Appliances 



lllustt 

 Shipping Cars Equipped with Tires Direct to Neutral Coun- 

 tries 662 



Obituary Record 663 



Official India Rubber Statistics for the United States 664 



News of the American Rubber Trade 



Illustrated 665 



Paul W. Litchfield 



Portrait 668 



Harry M. Hope 



Portrait 669 



New Hodgman Office Building 



Illustrated 67] 



Trade Opportunities 672 



Rubber Trade in Boston 



Our Correspondent 



Rubber Trade in Rhode Island 



Our Correspondent 673 



Rubber Trade in Trenton 



Our Correspondent 674 



Rubber Trade in Chicago 



Our Correspondent 67S 

 Rubber Trade in Akron 



Our Correspondent 676 

 Rubber Trade on Pacific Coast 



' Our Correspondent 676 



Fine Exhibit of Amazon Rubber at the San Diego Exposition 



Illustrated 677 



Graphic Efficiency Instrument for Rubber Machinery 



Illustrated 678 



India Rubber Trade in Great Britain 



Our Correspondent 679 



Some Rubber Interests in Europe 680 



Rubber Trade in Germany 



Our Correspondent 681 



Some Rubber Planting Notes 682 



Review of the Balata Industry in Dutch Guiana for 1914 . . 



Our Correspondent 683 

 Rubber Situation in Brazil 



Our Correspondent 684 



Growth of the Rubber Industry in Japan 



Our Ccr< Illustrated 686 



Recent Patents Relating to Rubber 688 



States, United Kingdom, France, Germany, New Zealand. 1 



Rubber in Ford Cars 690 



Review of the Crude Rubber Market 6gi 



Rubber Scrap Market 694 



Market for Cotton and Other Fabrics 694 



Market for Chemicals and Compound Ingredients 695 



Hard Rubber Engraving Machine 



Illustrated 696 



ILLUSTRATED herewith is a machine that engraves plain and 

 * ornamental letters, designs, trade marks, etc., on hard rubber 

 articles, by means of a pantograph link motion. It will copy any 

 size from 0.039 inch up to 4\i inches in the proportion of 1 to 

 1 down to 10 to 1. Thus a surface of 4J4 inches square can be 

 covered with the pantograph alone. Ry means of the transverse 

 and longitudinal slide motion of the table, both of which have 

 graduated dials to facilitate the setting of the wi irk. the total area 

 is increased to approximately 10 x \Z inches. The chief limi- 



tation nt these machines has been a gradual loss of accuracy 

 due to wear on the spindle bearings. In the S & S machine, 

 however, the wear is reduced to an absolute minimum. This is 

 accomplished by taking up the side pull, due to the small driving 

 belt, on a stationary sleeve. The power is transmitted to a small 

 spring collar which is clamped to the end of the spindle by two 

 small pins. This means that the machine will retain its high 

 degree of accuracy almost indefinitely. 



The other good points are the strong, rigid construction and 

 the micrometer adjustment of the cutter which can be instantly 

 raised from the work by a lever. The machine is manufactured 

 by Schuchardt & Schutte, 90 West street, NTu York, 



A PNEUMATIC JACK LIFT. 



A new jack lift operated by compressed air has recently been 

 placed on the market. The air may be supplied either from an 

 ordinary hand air pump or from the mechanical air pumps which 

 are now part of the equipment of a great number of motor cars. 

 This jack is sold with 3 feet of rubber air hose and it will lie 

 appreciated by motorists who know the difficulties of operating 

 with the ordinary lift jack under the rear axle of a machine. 

 Supplied with air from an ordinary hand pump this jack is cap- 

 able of lifting a six-ton truck. [National Motor Supply Co., 

 Cleveland, Ohio.] 



