February 1, 1916.- 



THE INDIA RUBBER WORLD 



231 



New Machines and Appliances. 



SAFETY STOP AND Il&GNETIC CXUTCH-BBAK£ FOB MILLS. 



THIS is a safety Stop device for use in rubber mills where 

 a quick and reliable means of throwing off the driving 

 power and applying a powerful brake to stop the mill line 

 is necessary to prevent injury or loss of life of operators who 

 may be caught in the mill rolls or gearing. 



A highly perfected safety device that has been subjected to 

 most rigorous tests in millroom requirements is illustrated 

 herewith. The equipment consists of a synchronous motor drive 

 mounted on a common sub-base with a driven rope sheave, the 

 magnetic clutch-brake furnishing the connection between the 

 motor and the rope sheave. The motor is rated at 650 horse- 

 power, runs at 240 r. p. m. and under normal conditions carries 

 practically full load when the mill line is operating. 



Throughout the millroom safety switches are mounted on 

 the frame of each mill and trip rods' are located above the rolls 



within easy reach from each side of the mill. The safety 

 switches are arranged in series electrically so that the magnetic 

 clutch wmII be disengaged and the brake simultaneously applied 

 when this safety rod is tripped in case of an accident. To 

 start the machinery again with its heavy load a single push 

 button is provided- in the motor room which engages the clutch 

 energized by an automatic rheostat in such a way that the 

 load is picked up gradually. [The Cutler-Hammer Manufactur- 

 ing Co., Milwaukee, Wii 



'JUMBO" STEAM JACKETED MIXEK. 



The improvement during recent years in machines for build- 

 ing tire casings has been so radical that manufacturers of ma- 

 chinery and appliances have been extremely busy in meeting the 

 present demands for im- 

 proved machinery. Gam- 

 meter's galvanized steel tire 

 machine drum was specially 

 designed to meet the urgent 

 requirements of modern tire 

 building. It is used for han- 

 dling the fabric or rubber 

 stock from which tire casings 

 are made. In construction it is strong, rigid, light and durable. 

 It is 8 inches in diameter and 16 inches long and will fit any 

 size mandrel. [W. F. Gammeter, Cadiz, Ohio.] 



SCREW PRESS AND ROTARY DRYER FOR RUBBER WASTE. 



In reclaiming, the process of drying washed rubber waste has 

 ^been greatly facilitated and production cost materially reduced 



by the automatic continuous screw press and direct steam heated 

 air dryer shown in the accompanying illustrations. As the ma- 

 chines are installed together the process therefore is a continuous 

 one. 



The -American screw press consists of a horizontal tapered 

 screw built up on a Imllow perforated shaft arranged to allow 



the admitting of 

 steam to the 

 material if de- 

 si r e d. The 

 screw fits close- 

 ly inside a sim-' 

 ilarly tapered, 

 itted curb and 

 rotates. The 

 «i.'t waste is 



delivered from 



the washers to 

 the feed hopper of the press where the material is mechanically 

 measured and forced into the straight, purely conveyor part of 

 the screw. This carries the waste into the tapered curb, where 

 it is slowl}- and positively pressed, forcing out the liquids. The 

 press is fitted at the discharge end with an adjustable cone ar- 

 rangement by which the desired pressure is produced in the press. 

 The waste after passing through the press is delivered to the 

 hopper of the rotary dryer and comes in contact with the air, 

 heated by being 

 blown over steam 

 coils in the heater. 

 The waste falls to 

 the bottom of the 

 dryer, is caught 

 up and lifted to 

 almost the highest 

 point of rotation 



and is then showered through the hot air. This cycle of opera- 

 tions is repeated until the material, in a dried condition, is dis- 

 charged from the lower end of the drrer. It is claimed that by 

 this method waste can be dried in less than half an hour. [Ameri- 

 can Process Co., New York City.] 



••JUMBO" STEAM JACKETED MIXER. 



This mixer and churn is made in sizes of from 1 to 25 bar- 

 rels capacity, and with or without a steam jacket. 



Designed especially for rublier manufacturers and to withstand 



hard usage, the ■•.hiin . i i, ,,{ unusually heavy construc- 



tion. It is a machine tluu can be adapted for many uses as, for 

 mixing, heating and drying powdered materials, for mi.xing pastes 

 of all kinds, and for dampening preparations under heat. This 



