ifferential Lock on Iwo-speed Axle
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3 enable a vehicle fitted with a twospeed axle to extricate itself from aery ground is the object of a differal-gear locking mechanism shown in .nt No. 916,748. (Eaton Axles Ltd., oria Road, Great Sankey, Warring he drawing shows a two-speed axle
:he well-known Eaton type. This an cpicyclic reduction gear to give lower ratio. Part of this gear is a sliding sleeve (1) formed as a sun on the right-hand end and having :h teeth (2) on the left.
hese teeth form part of the locking hanisms; if they are engaged by a ng clutch-ring (3) splined on the half-shaft, they lock the shaft to the differential carrier and so provide a solid one-piece drive to the axle.
The movement of the clutch-operating lever (4) is deliberately limited so that the teeth can be engaged only when the axle is in the high-speed ratio.
This prevents the driver from overloading the mechanisms by using maximum torque with low axle ratio as well as the lowest gearbox ratio