New Hydraulic Drive for Winget. Mixers
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Redesigned Staffa: Motors Incorporated in Larger Capacity Mixers
EDESIGNED Staffa hydraulic motors
are incorporated in the latest Winget :hallenge truck concrete mixers (models 00 HYD and 600 HYD). These mixers ave rated capacities of 4 and b cu. vd, espectively, with agitator capacities of and 7.1-, Cu. yd.. and gross drum olumes of 174 and 305 cu. ft.
The Staffa hydraulic motors employed are five-eylindered, low-speed, hightorque, reversible, radial-piston units, and are produced by Chamberlain Industries. Ltd., Staffa Works, Argall Avenue, Leyton, E.10. As applied to the Winget mixer, the motor is rigidly mounted to the mixing frame, and a nickel-alloy-sleet
pinion. splined to the motor shaft, engages with b. manganese-steer gear ring bolted to the drum base. The motor-todrum gear reduction is 3 to I.
A drive taken from the front of the vehicle-engine crankshaft through a transfer box powers the special hydraulii pump and boost pump. These pumps are enclosed in a neat cowling extending forward from the standard cab front panel. The hydraulic circuit is a closed system, and one control lever operates the pump for all charging, agitating. mixing and discharging operations.
A mixorneter indicates the correct drum speed for charging, Mixing and agitating, and by controlling the revolutions of the drum, delivery of uniform concrete is assured., This device also records a running total of all drum revolutions between charging and mixing ss hilt a trip mechanism can be reset foi each journey.