January 1, 1921 



THE INDIA RUBBER WORLD 



255 



New Machines and Appliances 



SOLVENT RECOVERY APPARATUS 



THE importance of conserving ilie health of rubber workers 

 exposed to the fumes of benzine and safeguarding them from 

 the danger of explosion when benzine gas mixed with air 

 reafches a proportion between 28 and 44 per cent is fully appre- 

 ciated in the industry. In providing means for preventing the es- 

 cape of benzine gas into mill rooms, rubber manufacturers could, 

 while benefiting their employes, also benefit themselves by install- 

 ing aparatus which would not only check the spread of the noxious 

 and dangerous fumes, but also collect and liquefy the free volatile 

 hydrocarbon and make it again available as a solvent. 



With modern apparatus this result has been accomplished in a 

 high degree and with marked improvement in the health and com- 

 fort of millroom workers, not to mention the reduction in insur- 

 ance rates due to tlie decreased danger from fire. Calenders, 

 spreaders and impregnators may be provided with gas-tight hous- 

 ings, and by a water cooler the evaporated benzine is condensed 

 on the floor of the housing, whence the liquid is conveyed to the 

 benzine tank, the piping being safeguarded with special devices 

 against fire. Safety valves in the upper half of the housing raise 

 automatically should an explosion occur, and return at once to 

 the former position after an explosion, thus instantly reestablish- 

 ing the gas-tight inclosure. It is said that with such vents prac- 

 tically no harm can result from any blast. Even though a fire 



Solvent Recovery Ait.\ratus Applied to Baknek I.mpregnator 



followed inside the housing, it would extinguish itself through 

 lack of atmospheric oxygen. In one test it was shown that 85 

 per cent of the evaporated benzine was recovered, 10 per cent 

 passed into the finished product, and but 5 per cent was lost. 



Recent applications of the benzine solvent recovery device have 

 been made successfully to a spreading machine and a horizontal 

 calender used in making asbestos packing, and also to an impreg- 

 nator used in making cord tire fabrics. In the device used on the 

 latter, gasoline or benzol can be recovered quite as readily as 

 benzine. — Benzine Condensation Co., Inc., 224 West 42d street, 

 \'ew York. 



MACHINE FOR TRIMMING MOLDED HOSE 



The rind or overflow from molded hose, carriage tires, bead 

 fillers or any of the various rubl)er products of a similiar nature 

 is readily removed by this device. The machine is quickly ad- 

 justed to all the different sizes of hose and operates at an 

 average capacity of 3,500 linear feet an hour. However the 

 capacity has been known to be increased to 6.000 linear feet an 

 hour. Both sides are perfectly and uniformly removed at one 

 operation. The guide trough between which the hose travels 

 and through which the abrading wheel operates, is constructed 



in such a manner that the hose cover cannot be injured in the 

 process of trimming. 



.Attached to the machine is a measuring mechanism that ac- 

 curatclv records all hose trimmed. Rv disconnecting the abrad- 



T 



Hose Trimming Machine 



ing parts the machine can be used for measuring only. The com- 

 plete machine is mounted on an iron table to which is attached 

 four wrought-iron legs with casters for portability. 



An additional claim put forth by the maker is tliat a most 

 inexperienced workman will get excellent results with this de- 

 vice. — Frank C. Moore, Canton, Ohio. 



TUBE AND AIR BAG INSERTING MACHINE 



Tire manufacturers will be interested in this machine for open- 

 ing tires, inserting and removing tubes and air bags. One of the 

 chief claims is that one man can tube or bag tires equivalent to 

 the labor of three men 

 by the hand method. 



In operating the ma- 

 chine the casing is placed 

 on the table, engaging 

 four adjustable slides on 

 the lower bead of the 

 tire and four swinging 

 arms on the upper bead. 

 The tire is then uni- 

 formly opened by pres- 

 sure of the foot treadle. 

 The air bag is ' quickly 

 and easily inserted. A 

 round wooden breaker 

 laid across the tire holds 

 the air bag in position 

 until both sides of the 

 bag enter the casing. 



The air bags are removed by using a tool designed to enter into 

 the tire and lift one side of the bag out, so that it can be readily 

 picked out by hand without lireaking or injuring it. 



A statement has been made to the effect that by using this 

 device one air bag can be used to cure approximately 100 tires. 

 Whereas by the old method, the average life of the bag was 

 from 8 to 12 tires. 



This machine is adjustable to all sizes of tires from 30 by S'A 

 to 37 by 5 inclusive. The machine is portable and can be moved 

 to the different departments of the factory. — Akron Gear & En- 

 gineering Co., .\kron. Ohio. 



TiiE l-'iNCH Tike Opener 



