Kuhn slide
The Kuhn slide (German: Kuhnsche Schleife) is part of a modified Walschaerts (German: Heusinger) valve gear on steam locomotives[1] and is named after its inventor, Michael Kuhn (1851–1903).
Problems often arise in incorporating a Walschaerts valve gear into the design of tank and narrow gauge locomotives because of space limitations.
One advantage of the Kuhn slide is that it runs equally smoothly in either direction.
Together with larger counterweights on the driving wheels improved the locomotives running characteristics.
On the so-called Winterthur valve gear the expansion link itself is attached to the reversing shaft, both having a common pivot.
4. Lifting link 5. Lifting arm 7. Expansion link 8. Radius rod
