562 



THE INDIA RUBBER WORLD 



[JULY 1, 1919. 



New Machines and Appliances. 



COMBINED IMPREGNATING VACUUM DRYER AND SOLVENT 

 RECOVERY APPARATUS FOR FABRICS. 



THE .xccoMP.VNYiNG ii.i.usTR.\TiON shows a utiit of ail apparatus 

 in which fabrics and tire duck may be impregnated with 

 rubber solution, dried in a vacuum and the solvent subse- 

 quently recovered for reuse. 



In front of the first section is placed a chamber which is fitted 

 with a sealed connection, separating it from the dryer. The first 



The Devine Imprec.nwting and Solvent Recovery App.\r.\tus. 



section is built of sufficient size to contain the entire roll of 

 fabric and is equipped with an impregnating tank filled with the 

 rubber solution. As the roll unwinds, the fabric passes through 

 the tank and is impregnated with the solution. The fabric is then 

 automatically taken into the large chamber of the dryer and 

 thence runs through the entire length of the dryer in four passes. 

 The heat vaporizes the solvent in the impregnated duck, this 

 vapor going over to the condenser, where it is condensed, and 

 the solvent passes through the solvent recovery apparatus where 

 it is recovered. The finished, dried, impregtiated.duck is wound 

 up on another roll and after the operation is completed, the door 

 of the unit is opened and the finished roll removed. (J. P. Devine 

 Co., Bufifalo, New York.) 



CRUDE RUBBER SLICING-MACHINE. 



When cases or bales of crude rubber arrive at ihe factory 

 and the coverings are removed, it is quite a difficult matter to 

 separate the rubber sheets, while the baled rubber is often a solid 

 mass. For reducing the rubber to pieces convenient for the 



The Peerless Rubber Cutter. 



washing machines, a novel machine has recently been invented 

 that combines the power hack-saw principle with mechanical 

 features necessary in a machine, for slicing crude rubber of all 

 sorts. 



It is of the horizontal type with direct-connected motor, or 

 belt drive, and special gearing for actuating the sickle blade 



that reciprocates in a guide. .\ spiked vise, 28 inches between 

 ihc jaws and 24 inches high holds the block of rubber while a 

 film of water is distributed to all parts of the blade to facilitate 

 the cutting operation. If a hard foreign susbstance should be 

 encountered in the rubber, a relief is automatically applied which 

 offsets the machine and prevents breakage. 



This machine operates at a speed of 150 strokes per minute 

 and feeds downward at the rate of l4-mch per stroke. Although 

 it weighs 1500 pounds, and occupies 8 by 3 feet of floor space, 

 it may be moved wherever desired with comparative ease. It 

 it claimed that 125 to 150 bales of rubber can be cut in ten 

 hours on this machine by one man. (Peerless Machine Co., 

 Racine. Wisconsin.) 



PNEUMATIC-TIRE-BUILDING MACHINE OF NOVEL 

 CONSTRUCTION. 



Filler threads uf tire-building fabric are stronger than the 

 warp threads. Therefore, a better tire is made by revers- 

 ing the warp and filler threads in building up the carcass 

 of a pncumafir tire, Tn cord-tire rnnstruction the same reason 



The Knight Tire-Building Machine. 



exists for reversing the threads of cord fabric. For this pur- 

 pose the present machine is provided with two independent 

 fabric-feeding tables and mechanisms, and is operated in the 

 following manner. 



The first fabric strip is threaded through the feed-mechanism, 

 the pressure adjusted by a hand-wheel, and the fabric end drawn 

 down by hand until the cone-roller rests on the core to which the 

 fabric is attached. When the machine is started the cone-roller 

 revolves the feed-mechanism at a speed 14 per cent slower than 

 the core speed, thereby providing uniform tension. 



As the core revolves, another ply is attached to the first ply 

 on the table, and when the end of the first ply reaches the core 

 the machine is stopped and the second ply separated from the 

 first and thrown back over the pressure-bar. When the two ends 

 of the first ply are joined together on the core, the latter is 

 revolved at an increased speed and the first ply stitched down. 

 The core is then removed to the second feeding mechanism and 

 the process repeated in applying the second ply. In making a 

 small tire that does not require more than four plys of fabric, 

 the bead-setting arm is swung against the tire and the bead set 



