September i, 1910.] 



THE INDIA RUBBER WORLD 



433 



New Rubber Factory Appliances. 



RUBBER STRIP CUTTING MACHINE. 



THE first illustration 011 this page is that of a machine 

 designed for cutting rubber strips. The regular size has 

 twenty-eight pairs of concave circular knives. The 

 knives are placed on two steel shafts and are quickly adjusted 

 to cut different widths from f^-inch up without moving spin- 

 dles. The stock to be cut passes over a roll in front of the 



Rubber Strip Cutting Machine. 

 [Made by Trencon Machine Specialty Co.] 



knives, then on between the cutting disks and over another 

 roll. This roll is driven at a greater speed than the knives so 

 as to form an even tension. The stock is then divided and 

 wound upon rolls with a friction device for increasing or 

 decreasing the tension as the roll increases in diameter. The 

 knives travel about 150 revolutions per minute. 



tire wrapping machine. 

 The illustration shows a machine for wrapping as well a', 

 unwrapping tires. The construction of the machine is such 

 that the tire can be rotated alternately and separately from the 

 wrapping device, and in an opposite direction. In this manner 

 tape is cross wrapped over the tire. In unwrapping the ma- 

 chine is reversed and the tape is wound upon a spool. 



machine for molding rubber biscuits. 

 This machine is driven by a worm screw connected by a gear 

 wheel to a shaft. On the shaft are two cams that operate 

 plungers held in position by spiral springs. In the center of 

 the machine is a vessel for holding the heated material. This 

 passes from the vessel to the mold and is pressed by the 

 plunger, passing by mechanical means to the other side of the 



Machine for Molding Rubber Biscuits. 



[Patent to British Murac Syndicate and M. M. Dessau.] 



machine, where the plunger presses it through an opening onto 

 a conveyor belt by which the biscuits are drawn through water 

 for cooling. 



MACHINE FOR MANUFACTURING TIRES. 



This machine is designed for pressing or rolling the fabric 

 and rubber tight together after the tire has been wholly or 

 partly built up. The tire is mounted on a stand, with two 



Tire Wrapping Machine. 



[United States Patent to Nelson E. Raber.] 



Machine for Manufacturing Tires. 



[British Patent to Thomas Sloper. ] 



pressure rolls, one inside and the other outside, worked in 

 unison, while the tire is rotated. In this manner the parts are 

 tightly pressed together. 



POWDERING RUBBER WASTE. 



A rasping device for powdering rubber waste consists first of 

 a cylinder with a roughened surface. Then running parallel to 

 the cylinder is a spiked feed roll that presses the stock against 



