NovembeilI, 1916.] 



THE INDIA RUBBER WORLD 



77 



New Machines and Appliances. 



A DUTCH TYPE TWO-EOLL PLANTATION WASHER. 



MACHINERY builders in Holland are keeping pace with the 

 ideas of modern design and construction of rubber wash- 

 ing machines. The illustration clearly shows a strongly 

 built, standard machine that is capable of giving durable service. 

 The heavy, cast iron bed-plate is of the one-piece pattern and 

 supports the side frames in which are mounted the journals for 



the two rolls. These are made of deep chilled iron, measuring 

 12 by i8 niches, accurately turned and diamond corrugated. The 

 adjustable roll is taken up by two powerful screws mounted in 

 the side frames and operated by a cross shaft and hand wheel. 

 Provision. is made to prevent oil from coming in contact with 

 the rolls. 



The machine is underdriven and controlled by a lever friction 

 clutch tested to stand 18 horse-power. It is driven by a steel 

 pinion on the main shaft that meshes with the main gear keyed 

 to the back roll. Both gears are of the double helical cut type 

 and a safety screw prevents breaking of the gear teeth when 

 subjected to unusual strain. The front roll is driven by gearing 

 from the back roll, and a cover that completely encloses both 

 gears prevents accidents. A perforated pan is provided for 

 catching the rubber as it passes between the rolls, and a strainer 

 box retains the smaller particles that fail to mass. 



The machine weighs 5,000 pounds and w^hen packed for ship- 

 ment measures 61 by 55 by 48 inches, and an additional crate 

 measures 92^^ by 7^ by 7^ inches. [J. L. Nering Bogel & Co., 

 Deventer, Holland.] 



HIGH PKESSTJItE COUPUNGS AND THROTTLE VALVES. 



Reliable hose clamps and dependable throttle valves are in- 

 dispensable equipment where high pressure strain or compressed 

 air is used. A clamp that will not blow off under high pressure 



or give way 

 through long 

 service is es- 

 sential. Such 

 are the claims 

 made by the 

 m a n u facturer 

 of "Boss" coup- 

 lings. Its parts 



are few, comprising spud, stem, nut and clamp, — the long stem 

 affording ample hose-gripping surface and the dovetail clamp 

 accommodating a variety of outside hose diameters. For hose 



with e-xtremely thick walls or with woven cotton cover, special 

 clamps are furnished. 



"Boss" throttle valves 

 are also constructed with 

 the object of giving satis- 

 factory service under high 

 pressure and 

 rough usage. The 

 walls are extra 

 heavy and the 

 thread shoulders 

 r e i n f o r ced to 

 withstand unusu- 

 al strains. While 

 operating freel>, 

 these valves will 

 not close nor open by vibration 

 Philadelphia, Pennsylvania.] 



[Dixon Valve and Coupling Co., 



COMBUSTION STOVE FOR SMOKING RUBBER SHEET. 



There are various methods and appliances used in smoking 

 rubl)er that has been prepared in the form of sheets. On most 



plantations the smoke is ap- 

 plied externally to the rubber 

 that is suspended on racks or 

 poles in a smoke house. The 

 stove shown in the illustration 

 produces clean, sparkless smoke 

 by the combustion of wood, 

 cocoanut husks or similar ma- 

 terial. It is strongly construct- 

 ed of metal and supported by 

 four legs. The fuel chamber, 

 which occupies the lower part 

 of the stove, is provided with 

 grate bars, draft regulating 

 slide for controlling the vol- 

 ume and temperature of the 

 smoke, and a fuel charging 

 door. The upper part of the 

 stove contains the spark ar- 

 rester, which retains and pre- 

 cipitates all solid substances in the smoke. Ash trays are pro- 

 vided that may be easily lifted off, that their contents may be 

 emptied at intervals. The smoke outlet at the top is designed 

 to fit an ordinary 5-inch stove pipe. [United Engineers, Limited, 

 Ipoh, Federated Malay States.] 



THE PIONEER DUSTLESS GRINDER. 



The self-contained motor driven grinding machine here shown 

 lias several features that doubtless would find favor and practical 

 utility in a rubber factory, not only in the machine shop and pat- 

 tern room, but, for example, in smoothing off the fm that is left 

 after trimming molded goods, and also rough grinding hard 

 rubber articles with plain surfaces. 



The machine is adapted to be placed on a bench within easy 

 reach, and starts at full speed by the touch of a button. It is 

 provided with a vacuum dust collecting system that carries the 

 dust to a removable settling pan located in the column of the 

 machine. The tilting tal)lc is e<|uipped with a graduated adjustable 

 angle gage, operated by a small hand wheel. Locking levers 

 are provided to hold the table firmly in any position, while the 

 entire mechanism is supported on a square column upon which it 



