.522 



THE INDIA RUBBER WORLD 



[June 1, 1917. , 



into a suitable receptacle or to a conveyor leading to final de- 

 livery, while the iron and magnetic material is attracted and 

 held firmly against the belt until it is carried to the point w^here 



^^^S^H. 



pounds of ice that under ordinary circumstances will last lyi 

 days. There is a waste pipe connection and an overflow con- 

 nected to the bubbler. [Ebinger Sanitary Manufacturing Co., 



Columbus, Ohio.] 



MACHINERY FOR EXPELLING OIL FROM HEVEA SEEDS. 



It will not be many years hence when the 1,500,000 acres of 

 Hci'ea planted in the Far East will produce enormous quantities 

 of rubber seed that should be turned into useful products and 

 at a profit to the estate owners. Experiments in the extraction 

 of the oil contained in rubber seed have shown its practical 

 utility in several ways, but particularly in the manufacture of 

 soap. As a forward suggestion an illustrated description of a 

 typical plant for this purpose follows : The illustration shows 

 the front elevation of a complete one expeller oil plant that is 

 continuous in operation. The seed is spouted into the roller 

 mill and after being ground is elevated into the tempering ap- 

 paratus. In passing the entire length of this apparatus it is 

 slightly w^armed and then drops into the hopper of the expeller. 

 Here the pressing of the seed is performed in a perforated hard- 

 ened steel cylinder, in which revolves a shaft, carrying a series 



the belt leaves the pulley on the under side and is there dis- 

 charged back of a partition set a few inches beneath the pulley 

 in line with its axis. 



The conveyor is usually a rubber belt of the best grade, heavy,' 

 and mechanically strong enouglj for the materidi' to" be handled. 

 It should be made, endless, so that no dust or fine material can 

 work through at the splicfe.- The belts are usually run at a 

 speed of about 100 feet per minute and' should be supported 

 by rollers placed at suitable intervals. [Dings Magnetic Separa- 

 tor Co., Milwaukee, Wisconsin.] 



A SANITARY WATER COOLER, 



Sanitary drinking fountains that supply pure cool water to the 

 operatives are now considered necessary in the equipment of mod- 

 ern rubber mills. As a rule the fountains are placed at conveni- 

 ent points in the factory 

 to which the cold water 

 ' is piped from a central 



refrigerating station, a 

 system that requires con- 

 siderable outlay in equip- 

 ment and piping while 

 if the mill is a large one, 

 pumping will be neces- 

 sary. 



The cooler fountain 

 here illustrated is self 

 contained and simple in 

 construction. The foun- 

 tain is connected to the 

 water supply system and 

 the drinking water passes 

 through the cooling coil 

 that is immersed in iced 

 water and flows up to 

 the porcelain enameled 

 bubbler. This sanitary 

 drinking device is of special construction and is controlled by 

 a valve that closes automatically when the bubbler is not in use. 

 ■ The ice chamber is insulated and occupies the central part of 

 the fountain. It is surrounded by the cooling coil through which 

 the drinking water circulates. The ice chamber holds about 100 



of hardened steel screws that produce a gradually increasing 

 pressure that is regulated by a hardened steel cone. The oil is 

 expelled through the perforations of the cylinder, drops in the 

 oil strainer, and from thence into a pan. The foots accumulating 

 in the strainer are fed automatically into the elevator which re- 

 turns them into the feed hopper. The pressed cake is discharged 

 at the opposite end of the cylinder. This makes an entirely auto- 

 matic and continuous operation, from the moment the seed enters 

 the mill until the oil is pumped into the filter press, and from 

 thence into the barrel or storage tank, and the cake sacked or 

 fed into the grinding mill. 



All seeds may be pressed cold, and without grinding, but the 

 best results are obtained by flattening and coarse grinding the 

 seeds and then slightly warming the ground stock in the tem- 

 pering apparatus, before introducing it into the expeller. By 

 this method is obtained a maximum yield, without injuring the 

 quality of the oil. Moreover, the oil from the machine can be 

 at once pumped through the filter press and at the end of the 

 day's run, or at any time during the run, the operator can tell 

 exactly the yield of filtered oil that is being obtained from the 

 material under treatment. No settling tanks are required when 

 using this process, thus saving much valuable space. 



The oil is practically cold pressed, the meal being warmed to 



