Eduard Locher

Locher set out to design a rack system that could be used on gradients as steep as 1 in 2 (50%).

Horizontal pinions engage the centrally-mounted bar, both driving the locomotive and keeping it centered on the track.

This system provides very stable attachment to the track, also protecting the car from toppling over even under the most severe crosswinds.

Such gears are also capable of leading the car, so even flanges on running wheels are optional.

The biggest shortcoming of the system is that the standard railway switch is not usable, and a transfer table or other complex device must be used where branching of the track is needed.