Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. . Air Oischarqe. Fig. S7. Section of Motor and Pump in MotorDriven from Pressure 188 ELECTRIC RAILWAYS 93 may be reduced during the compression stroke. This reduces thevertical component of the thrust on the pistons, and thereby reducesthe amount of wear on the cyhnders. It should be rememb


Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. . Air Oischarqe. Fig. S7. Section of Motor and Pump in MotorDriven from Pressure 188 ELECTRIC RAILWAYS 93 may be reduced during the compression stroke. This reduces thevertical component of the thrust on the pistons, and thereby reducesthe amount of wear on the cyhnders. It should be remembered, how-ever, that the pump should always run with the compression part ofthe stroke on the upper half of the revolution. The crank-shaft ismade of forged steel, and has two bronze bearings, one at either end,and a babbitt bearing in the middle. The crank-shaft bearings,wrist-pins, and crank-pins are lubricated by the splash system, froma bath of oil in the crank case. The gear wheels 14 and 15 are ofthe herringbone type, and are lubricated from a bath of oil in thedust-proof gear case. An air compressor heats very rapidly when in operation, if nomeans are provided to conduct the heat away. For this reason, com-


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Keywords: ., bookauthoramericantechnicalsoci, bookcentury1900, bookdecade1910