April i, 1903.] 



THE INDIA RUBBER WORLD 



35 



THE LARGEST RUBBER COVERED ROLLER. 



THE art of covering heavy metal rollers for squeeze rolls in 

 various industries, particularly in that of paper making, 

 is notably one of the fine arts of the rubber business. Only 

 those who make and those who use the rolls are aware of the 

 difficulty that is met in vulcanizing a body of high grade rubber 

 so firmly to a mass of metal that no pressure or strain or slip 

 shall allow it to loosen from the roll at any point. A few 



RUBBER COVERED ROLLER FOR PAPER MAKING MACHINE 



ago, the successful covering of small rolls was quite a triumph. 

 To-day, however, such is the progress made that rolls like that 

 in the accompanying illustration are covered accurately and suc- 

 cessfully. The roll in question, which is said to be the largest 

 ever covered, is 24 inches in diameter; the length of the face 

 being 161 inches and its total weight being about six tons. The 

 cut shows the rubber roll on its shipping truck in the packing 

 room of the manufacturers, the Boston Belting Co. (Boston). 



The roll illustrated was made to form part of the largest paper 

 making machine in the world — a straight Fourdrinier machine, 

 built and installed in the mills of The Remington-Martin Co., 

 at Norfolk, New York, by The Bagley & Sewall Co. (Water- 

 town, N. Y.) This machine will finish a continuous sheet of 

 paper, 12 feet 6 inches wide, at the rate of 450 to 500 feet per 

 minute, or four miles in length in an hour or less. The same 

 makers have under contract several other paper making ma- 

 chines practically as large, for which similar rubber rolls will be 

 required. 



pipe for the process of filling. An ingeniously graded measur- 

 ing rod enables the filling to be done accurately and economi- 

 cally. Tanks are made in various sizes, but are generally con- 

 structed from specifications. The range thus far covered, runs 

 from one barrel to a hundred. In some cases, where the build- 

 ing has had no ope.i area available in its neighborhood, the 

 t ink has been buried in a solid brick vaultin a basement. The 

 in valve, while permitting the ingress of air necessary to pres- 

 sure, prevents evaporation almost perfectly. A feed pipe and 



.1 drip pipe lead from the tank to 

 the building where the gasoline 

 is to be served. The feed pipe 

 connects directly with a suction 

 pump, titled with self registering 

 indicator of measure, and so con- 

 structed that a gallon, a half- 

 gallon, or a quart of naphtha can 

 be drawn at a time. In the tube 

 of this pump is all the gasoline 

 that the apparatus requires to 

 e in the building which it 

 serves — never more than one 

 gallon. It is claimed that the 

 pump is so strongly constructed 

 that it would not explode in a 

 burning building. The drip pipe, 

 which is fitted with a trap, takes 

 the waste back to the tank. Under ordinary circumstances 

 this pumping arrangement works only to a height of 12 feet 

 above the tank, but special devices have been applied so that in 

 the Providence factory of the Bourn Rubber Co. naphtha is 

 delivered on the fifth floor. 



STORAGE OF GASOLINE AND NAPHTHA. 



TIRE manufacturers are not the only rubber men to receive 

 benefit from the extension of the automobile industry. 

 The increased use of gasoline in automobile carriages, and the 

 consequent necessity of having safe and convenient means for 

 storing and pumping gasoline, have stimulated inventors to ar- 

 range outfits for that purpose, and many rubber manufacturers 

 have secured them. The outfit illustrated herewith is con- 

 structed by S. E. Bowser & Co. (Fort Wayne, Indiana), and has 

 been approved by the National Board of Fire Underwriters and 

 by municipal authorities in many large cities. It consists of a 

 metal tank, which is commonly buried in the ground some dis- 

 tance away from the building in which the gasoline is to be 

 used. At one end of the tank is the filling pipe, so constructed 

 as to project slightly above the surface of the ground. This 

 pipe is covered by a metal cap which is fastened in place by a 

 lock strap. When the cap is open a ball bearing vent valve 

 appears, and this in turn may be unscrewed, leaving an open 



"I 



STORAGE TAf 



The London Cyclist mentions a motor cycle that has been 

 run for 5570 miles with only one tire puncture, and several oth- 

 ers which had gone from 1500 to 2700 without mishaps to the 

 tires. Mention is made also of motor cycle tires which had 

 gone for a surprisingly long time without reinflation — up to six 

 months in one case. Motor tires stand up well in this respect, 

 the Cyclist says, because the inner tubes are thick, approaching 

 more nearly than bicycle tires to being actually airtight, 



