. Railway mechanical engineer . n, which differs sufficiently from stockvarieties to make it noticeable. The mechanical movement provided is solely for the pur-pose of operating the churns in the mixing tanks, powerbeing derived from a two-horsepower electric motor drivinga horizontal shaft through a flywheel. The shaft, mountedon suitable hangers and ruiming in oil boxes fastened thereto,carries a bevel gear on its end. This gear drives its mateand revolves the vertical propeller shaft, which, anchored ina bearing near its top, seats in a collar in the bottom of themixing tank—in this case an
. Railway mechanical engineer . n, which differs sufficiently from stockvarieties to make it noticeable. The mechanical movement provided is solely for the pur-pose of operating the churns in the mixing tanks, powerbeing derived from a two-horsepower electric motor drivinga horizontal shaft through a flywheel. The shaft, mountedon suitable hangers and ruiming in oil boxes fastened thereto,carries a bevel gear on its end. This gear drives its mateand revolves the vertical propeller shaft, which, anchored ina bearing near its top, seats in a collar in the bottom of themixing tank—in this case an ordinary so-called one-timeoil drum. A two-blade propeller is fixed near the base ofthe shaft and runs as close to the bottom of the tank as ispracticable without scraping. The blades are pitched toforce the agitation upward, and ^-in. holes in the bladesadd to their mixing effect. The propeller blades are madefrom sheet iron and the relation of the motor driven shaftto the flywheel and proportions of gears, have been calcu-. General View of tlie Churns and Pressure Tanks lated to revolve the blades at a speed of from SO to 60 r. p. m. removable sheet iron covers for the admit of the introduction into the tank of the necessaryquantity of paint and oil. When the covers are in place theyprevent waste of paint by splashing. The cylindrical tank below the churn is a receiver intowhich the mixed paint is allowed to flow by gravity uponthe opening of the valve between it and the chum. Thereceiver is constructed of an old cast-iron flanged pipe and theheads are of wood, bolted into place as shown, with a sheet-iron outside cover. Compressed air from the shop supply is admitted into thereceiver through a reducing valve which cuts the pressure 1=5 156 RAILWAY MECHANICAL ENGINEER Vol. 94, No. 3 down to 60 lb. per sq. in. The valve lietween the churnand the receiver is closed and tlie valve from the receiver tothe pressure tank opened, and the paint is forced
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
