January 1,' 1921 



THE INDIA RUBBER WORLD 



257 



built in two styles, the "Universal" and the "Special." The 

 former is adapted to build either regular fabric or cord fabric 

 up to and including 5-inch tires. The "Special" is particularly 

 designed for building motorcycle and Ford sizes. — The Her- 

 mann Tire Building Machine Co.. Columbus, Ohio. 



during vulcanization. A lifty-minute cure is necessary. After 

 curing, the wrapping is removed and another section of the tire 

 is moved over the core and then wrapped for curing. In this 

 way the capacity of the vulcanizer is raised to nine cures, or three 

 tires a day, for each core. — George W. Eno Rubber Co., Los 

 .\ngeles, California. 



MILL-STONE G(tINDER 



In the manufacture of reclaimed rubber by the mechanical 

 process, an ordinary rubber mill is employed for coarse grind- 

 ing the combined rubber scrap and fabric, following which the 



RunK .\lii.i. Grinrf.k 



fine reduction necessary for the complete separation of rubber 

 and fabric is done on a Buhr stone mill. The mill-stones require 

 occasional dressing to maintain them in good operating condition. 

 This is effected by an electrically driven abrasive wheel attached 

 to a flexible shaft, as shown in the illustration. The particular 

 form here shown is the Snow mill-stone grinder. — R. G. Haskins 

 Co., 27 South Desplaines street, Chicago, Illinois. 



MACHINE FOR VULCANIZING WHOLESOLES TO OLD TIRES 



.\ great deal of interest is evinced in this mehod of vulcanizing 

 wholesoles to old tire casings from the inside, applying the heat 

 through the various plies of fabric, instead of outside, as formerly 

 done. The vulcanizer consists of a heavy angle-iron frame, which 



The Eno "Exso" X'ui.canizer 



supports three steam-heated sectional cores. Each adjustable 

 core is equipped with valves and provided with a pet-cock to 

 allow air to escape from the core while heating. The steam 

 cocks are set to allow a little steam to escape, thus insuring 

 live, dry moving steam necessary for perfect vulcanization. 



Three tiies can be operated on at the same time. Only a third 

 of a tire is cured at one wrapping. The wholesole attached to 

 the casing is adjusted on tha core and wrapped down with wet 

 tape. The core is tightened to give all the pressure possible 



AN ELECTRIC INDUSTRIAL TRUCK 



Many possibilities of increasing the storage capacities, or re- 



of fabric, crude rubber. 



arc ofTercd through the 



ducing the labor item for piling rolls 

 tires, molds, or other bulky materials, 

 use of this machine. 



The truck frame is rigidly con- 

 structed of cast steel. The load 

 platform of corrugated steel may 

 be raised or lowered at will and 

 has a carrying capacity of 4,000 

 pounds. It is hinged at the col- 

 umn end, to avoid straining the 

 mechanism in case an obstacle is 

 encountered when lowering the 

 platform. The load platform is 

 carried by a cantilever type sup- 

 port. The stresses set up by the 

 load on the platform are distrib- 

 uted from heavy steel rollers each Lakewood Tier-Lift Truck 

 mounted on two annular ball bear- 

 ings. The load on the platform is balanced over the load-carry- 

 ing wheels which eliminates the tendency to tip when the load 

 is raised. The motor operating the lifting or tiering mechanism 

 is mounted on top of the columns. It is directly connected 

 through a flexible cushion joint to a worm operating two worm- 

 gears, each of which in turn operates vertical thread steel screws. 



At the back of the truck is located the driving apparatus. The 

 storage batteries, main drive motor, and controller are all en- 

 closed and are absolutely dust proof. The 

 drive motor is 24-volt, 6S-ampere, with ample 

 overload capacity. Connected to the platform 

 on which the operator stands are the brake 

 and operating pedals. The steering handle 

 and operating control are conveniently placed. 

 The truck is supplied with four wheels, hav- 

 ing cast steel axles. The tires on the wheels 

 are solid rubber. — Lakewood Engineering Co., 

 Cleveland, Ohio. 



AIR MOISTURE SEPARATOR 



Compressed air is an important adjunct in 

 rubber manufacture, therefore this air-cleaning 

 device is of interest. This separator is claimed 

 to relieve all troubles pccasioned by the pres- 

 ence of moisture, dirt, etc., in the compressed 

 air lines. The air enters the separator through 

 a pipe and strikes against the casing or inside 

 wall at an angle. This causes it to have a 

 centrifugal action and the water or dirt con- 

 sequently falls to the bottom of the separator, 

 while the clean, pure air passes on to the pipe. 

 There are no delicate parts to get out of order 

 and the only attention required is to drain it once in a while. 



These separators are made in two sizes, with a capacity of 

 150 and 400 cubic feet respectively. — Independent Pneumatic Tool 

 Co., 600 West Jackson boulevard, Chicago, Illinois. 



MECHANICAL "TAKE-OFF" OR BATCHING ATTACHMENT FOR 

 THE BOLTON VEJ»TICAL BIAS CUTTER 



A feature of much practical value has recently been added to the 

 Bolton vertical bias cutter in the form of a perfected "take off" 

 which receives the fabric strips as they are cut by the machine. 



Separator for 



Removi.vo 

 Moisture and 

 FTiRT From .\ir 



LliNES 



