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THE INDIA RUBBER WORLD 



February 1, 1921 



New Machines and Appliances 



Miller's All-in-0.\e 

 vulcanizer 



SECTIONAL VULCANIZER AND RETREADER 



MANY tiro factories and rubber repair sliops arc atiiuaiiited 

 with the merits of this machine, which is claimed to be 

 suitable for all sorts of work, such as rim cuts, blowouts, 

 bead curing and retreading. Sand 

 or air bass are used with it 



The vulcanizer proper is made 

 in a full half circle, with excep- 

 tionally deep cavity, and the steam 

 space extends up the side wall, 

 in order that the bead molds can 

 be used, and the entire surface 

 heated. The inside surface of tlie 

 vulcanizer is machined accurately 

 to produce a well-shaped tread, 

 with a true and smooth surface 

 for the bead mold to rest on. On 

 either end of the cavity there is 

 an extra long, air-cooled flange to 

 prevent marking or marring the 

 tires. The clamps have extra 

 large screws and are very strong. 

 The greater number of these 

 clamps employed the easier it is 

 to get a well-distributed pressure 



with the sand or air bags. A hinged joint permits the placing 

 or removing of as many clamps as desired. The bead molds 

 are made of cast iron or aluminum, as preferred. 



The rigid and well-construcled stand is of angle iron. The 

 regular outfit includes five pressure clamps, pressure plate, 

 clincher and side-bead molds. When requested, the manufac- 

 turer supplies a steam boiler, arranged for gas connection, or 

 equipped with an improved type gasoline force feed burner, hav- 

 ing an eight-gallon oil tank, hose and necessary valves.— Charles 

 E. Miller, Anderson Rubber Works, Anderson, Indiana. 



AIR COMPRESSOR FOR GIANT TIRES 



This compressor is especially designed for inflating giant pneu- 

 matic tires and other heavy service, and should be of practical 

 use in garages, tire and vulcanizing shops, filling stations, etc. 

 Each equipment consists of a compressor and motor, automatic 



controller, belt 

 tightener and 

 belt, substantial- 

 ly mounted over 

 a 30-galIon steel 

 air tank. The 

 other fittings 

 are composed of 

 a 300-p o u n d 

 pressure gage, 

 with needle con- 

 n e c t i o n and 

 needle valve, 

 and 25 feet of 

 air hose. The 

 tank base is 

 made to be 

 bolted to the 

 floor. All mov- 

 ing parts, with the exception of the fly-wheel, arc enclosed. There 

 are no nuts or detachable parts of any kind to work loose inside 

 and cause trouble. Due to the enclosed construction and the 

 intake mufiler the compressors are claimed to be practically 

 noiseless. 



Globe Victory .Air Compressor. 



The smaller size has a V4-h.-p. motor and a capacity of 2^ 

 cubic feet a minute, and a speed of 225 revolutions per minute. 

 The tank is guaranteed under a working pressure of 200 pounds. 

 The larger size is supplied with a l-h.-p. motor, having a ca- 

 pacity of 4'4 cubic feet a minute and a speed of 350 r. p. m. 

 The guaranteed working pressure of the tank is 250 pounds. 



Where portable units arc desired, a truck attachment is fur- 

 nished and 16 feet of cord with plug for electric connection. 

 This is so arranged that there is perfect stability and freedom^ 

 from vibration when the compressor is in operation. The wheels 

 are lowered only when it is necessary to move the apparatus. — 

 Globe Manufacturing Company, Battle Creek, Michigan. 



TIRE REPAIR VULCANIZER 



This vulcanizer, for which is claimed the saving of time and' 

 labor in repairing and retreading tire casings, consists of a full 

 circle mold with a removable top and a one-piece stationary lower 

 section, having specially designed heat chambers in each. The- 

 beat circulates around 

 the entire tire tread and 

 through the condenser, 

 so that no heat reaches 

 the bead. 



The self-c o n t a i n e d 

 steam generator of three- 

 gallon capacity has an 

 automatic steam conden- 

 ser and a water gage. 

 The mold can be operated 

 for a week continuously 

 w'ithout loss of time to 

 replenish water and get 

 up steam again. The con- 

 densing of the water over 

 and over again softens it 

 and eliminates any cor- 

 rosive effect upon the 

 condensing chamber. The 

 improved type of burner 



with which the vulcanizer is equipped is said to have a very low 

 fuel consumption. Sixty pounds of steam can be raised in 40 

 minutes. 



With this type of mold, sand bags are not used, but air bags are 

 substituted. The idea is that in vulcanizing the whole surface in 

 one operation there is insured perfect evenness of temperature anrf 

 uniformity of cure. The evenly distributed pressure of the air 

 bag produces a tread which is free from cracks and with side 

 walls of the proper strength and finish. It has been stated that 

 the time ordinarily required to make a complete cure is 45 minutes. 



The aluminum matrices are made to fit inside the mold face and 

 are interchangeable. The regular equipment consists of three 

 sizes of molds with four changeable matrices each. 



A tube plate which can be clamped on the mold top is furnished 

 for vulcanizing tube patches. The whole apparatus is compactly 

 built and simple to operate. — Edward Harris, Inc., Los Angeles, 

 California. 



Harris ONE-OPER.\TinN Retreader 



REPAIR VULCANIZER FOR TRUCK TIRES 



This machine will handle 6, 7 and 8-inch pneumatic truck tires, 

 all in the one cavity, by means of reducing shells. This is done 

 by milling out the cavities and the inside of the reducing shell 

 on the same mill as the outside, an exact fit being secured between 

 the cavity and the reducing shell. 



The inside curing core supplied with the outfit has a clamp 

 which is designed to give pressure at all points on the tire, from 



