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Randle Leslie Abbott

An epicyclic gear change assembly capable of giving a planetary ratio and direct drive and having first means for frictionally connecting two members of epicyclic gearing together for direct drive and second means for positively connecting two members of the gearing together for direct drive so that if the first means is engaged while the gearing is stationary and tends to slip when the gearing starts to be driven, the second means automatically comes into operation to inhibit such slipping.

Epicyclic gear assemblies

A control means comprising a fixed first member, two pivots fixed relative to the first member in spaced-apart relation, a second member movable relative to the first member, a third member movable relative to the second member by a first manually operated control between first and second positions in which respectively the third member engages the first and second pivots and thus mounts the second member for pivoting movement about the first and second pivots respectively, spring means acting on the second member and a linkage connected to the second member in such a location that when the third member is in its first position the spring force urges the linkage in one direction and when the third member is in its second position the spring force urges the linkage in the opposite direction.

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Tamworth, United Kingdom

Randle Leslie Abbott