. Science of railways . Fig. 4—Front View of 4x31/^ Variable-Speed Elevator Engine, Com-plete with Friction Clutch, Sprocket Wheel Casing,Variable-Speed Governor Lever and Quadrant of seven speeds, which are constant at each notch of thegovernor control. The Sprocket Wheel Casing, to which the Elevator Engineis attached, also carries the special Friction Clutch and leverconnections as shown in Fig. 6. The engine is oiled from two sources; a splash system, con- LOCOMOTIVE APPLIANCES. Ill sisting of oil film on water level in crank case, and by oil reach-ing the engine cylinder through the steam
. Science of railways . Fig. 4—Front View of 4x31/^ Variable-Speed Elevator Engine, Com-plete with Friction Clutch, Sprocket Wheel Casing,Variable-Speed Governor Lever and Quadrant of seven speeds, which are constant at each notch of thegovernor control. The Sprocket Wheel Casing, to which the Elevator Engineis attached, also carries the special Friction Clutch and leverconnections as shown in Fig. 6. The engine is oiled from two sources; a splash system, con- LOCOMOTIVE APPLIANCES. Ill sisting of oil film on water level in crank case, and by oil reach-ing the engine cylinder through the steam line from tap tomain locomotive lubricator. The splash system oil level is. Fig. 5—Back View of 4x3i^ Variable-Speed Elevator Engine and Sprocket Wheel Casing, Showing Friction Clutch Housing and Operating Lever maintained by direct feed from oil cups on crank case andfriction clutch housing as shown in Figs. 5 and 6. The valve is of the piston type. The valve and piston 112 LOCOMOTIVE APPLIANCES. rings are made of special mixture packing ring metal. Themain bearings are supplied with special bearing bronze solidbushings pressed in. The cylinder head is fitted with a relief valve which pre-vents breakage of parts if water should reach cylinder. Fig. 6—Front View of Elevator Engine and Sprocket Wheel Casing, Showing Controller, Controller Cam and Elevator Buckets The outer main bearing is provided with an oil separatorwhich allows surplus water leaking by piston and valve topass out through separator overflow and retains the oil incrank case at proper level. The oil from worm gear lubricator, after flowing over theworm wheel and worm, passes through an ope
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