December I, 1913.] 



THE INDIA RUBBER WORLD 



145 



New Machines and Appliances. 



A CELL DKYING MACHINE. 



IN the accompanying illustration is shown a cell drying machine 

 which is used by a number of prominent tire and rubber manu- 

 facturers for removing moisture from the fabric before it 

 is combined with rubber. The machine shown consists of ten 

 cells or units, each 62 inches wide and 52 incites long in the 

 direction of the cloth travel. These driers, however, are made 

 with any desired number of units. Each cell is a hollow cast- 

 iron box heated by steam, circulation being effected by baffle 

 plates inside the cell. The fabric is drawn by brass rollers over 

 the heated surfaces of the cells, running first over the top cell 

 and then being drawn over its under surface, then over the top 

 of the second cell and so on until it leaves the bottom cell in 

 a perfectly dry condition. The machine takes but a fraction of 

 the floor space necessary for the old types of cylinder and steam 

 coil driers. The brass rolls are driven by an endless roller 

 chain with a very small amount of friction. One feature of 

 this drier which may be appreciated by new factories is the unit 

 construction which permits of a machine of small capacity being 

 installed at the st;irt and then, as necessity requires, the machine 



Ten Cell Machine for Drying F.\bric. 



is given an increased capacity by merely adding other cells at 

 the top of the existing machine. [Cell Drier Machine Co.. Taun- 

 ton, Massachusetts.] 



COLLAPSIBLE CORE FOR TIRE BUILDING. 



What is claimed to be a radical improvement in the con- 

 struction of tire building cores, has just been introduced to 

 the rubber trade. Since the introduction of the quick detach- 

 able tire, most of this type have been built up on various kmds 

 of collapsible cores, the principal one of which was the double 

 ring type. This new core, however, it is claimed, is an im- 

 provement over the double ring type, in that it can be assembled 

 or taken apart in a few seconds, is more durable, retains its 

 shape and is as cheap to manufacture. Like other collapsible 

 cores, this new device, which is termed the "Simplex," is 



sawed into four sections and is provided with keys and end slots 

 to guard against transverse movements of the sections. The novel 

 feature is the single locking ring which is held in place by 

 leverage and friction only. A circumferential groove with one 



The Simplex Coll.\psible Tire Core. 



side tapered is machined into the tongue of each core section 

 and a steel ring is fitted into this groove. When the four sec- 

 tions are placed together and the locking ring forced home, 

 the core is drawn up into a perfect circle. The ring prevents 

 radial movement in or out, while the keys in the ends of the 

 sections hold them in alignment. Holes drilled behind the 

 groove afford means of forcing out the ring when the core is 

 to be collapsed. Only five parts are used in the construction 

 of the whole apparatus. Altho this core has been on the 

 market only a short time, it is reported by the manufacturers 

 that more than 500 are now being used in tire factories. [Will- 

 iams Foundry & Machine Co., Akron, Ohio.] 



WRAPPING TIRES BY HAND. 



In retreading tires, in the garage or repair shop, the operation 

 is customarily performed by applying the bandage as tightly 

 as possible directly from the hands. This requires skilled work- 

 manship as well as considerable physical strength, and often re- 

 sults in uneven pressures being produced in different parts of the 

 tire. To overcome this difficulty, the hard-operated retreader 

 shown in the illustration has been designed. 



In operation, the wet bandage, tightly wound on its spool, is 

 dropped into a recessed slot in the frame and the pressure arm 

 is released against the bandage. A portion of the bandage is 

 unwound and passed through the guides and once around the 

 tire, establishing an overlap to secure the end. The tire is se- 

 cured in a horizontal position, as shown, and the roller arm 

 clasped around it. Then the machine is simply rotated, causing 

 the bandage to be drawn from the spool and tightly wrapped 

 around the tire. The average tire requires about three 20-yard 

 bandages, depending upon the amount of overlap, which is regu- 

 lated at will by the operator. The machine will wrap any tire 

 from 25/2 to 6 inches in size. In order that the tire be wrapped 

 very tightly, it is necessary that the bandage itself be wound 

 tightly upon its spindle. In order to accomplish this result, a 



