. Electric railway journal . e discharge pipe,transmitting it, in fact, to consider-able distances if necessary. The storage house of the com-pany at Wapakoneta, in which theoils are kept, is somewhat isolated,and the compressed-air system usedin the shop is not extended to consequence, a portable tank hasbeen arranged for supplying com-pressed air at the storehouse. Thistank is an ordinary main reservoir,16 in. in diameter by 48 in. long,such as is used on an interurbancar. It is mounted on a two-wheeltruck and after being charged withair in the shop is wheeled from thereto the oil hous
. Electric railway journal . e discharge pipe,transmitting it, in fact, to consider-able distances if necessary. The storage house of the com-pany at Wapakoneta, in which theoils are kept, is somewhat isolated,and the compressed-air system usedin the shop is not extended to consequence, a portable tank hasbeen arranged for supplying com-pressed air at the storehouse. Thistank is an ordinary main reservoir,16 in. in diameter by 48 in. long,such as is used on an interurbancar. It is mounted on a two-wheeltruck and after being charged withair in the shop is wheeled from thereto the oil house. When charged at a pressure of 60 lb. persquare inch it affords sufficient air to transfer the contentsof a 50-gal. barrel to any desired receptacle. The discharge pipe is made up of a piece of 3^ gas pipe, which is turned in a lathe to give it asmooth surface capable of making a close fit in a stuffingbox. The siphon head through which the discharge pipeis extended is made of cast iron. It is about 3 in. long,. Electric Siphon Head forOil Barrels threaded on the outside with sixteen threads per inch andcut on a taper of 2l/2 in. per foot, as this taper appears tobe the general standard used for the sides of bungholesin oil barrels. A stuffing box is inserted in a threadedrecess at one end of the siphon head to hold packing aroundthe discharge pipe. The siphon head is drilled with a J^-in. hole, and intothis is inserted a J^j-in. air-supply pipe on which are mount-ed a pressure gage and an air cock for the purpose ofreleasing the pressure in case of accident to the barrel orto the discharge line. In operation, the siphon head is screwed into the bung-hole of the barrel until it is air-tight, and the J^-in. dis-charge pipe is shoved down through the siphon head untilit reaches the bottom of the barrel. Air is then turnedon to the air-supply pipe marked C on the accompanyingillustration, the pressure being read on the gage. This airpressure is transmitte
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