Walschaerts valve gear [SEP] discoverer or inventor
Walschaerts valve gear
The Walschaerts valve gear is a type of valve gear invented by Belgian railway mechanical engineer Egide Walschaerts in 1844 used to regulate the flow of steam to the pistons in steam engines. The gear is sometimes named without the final "s", since it was incorrectly patented under that name. It was extensively used in steam locomotives from the late 19th century until the end of the steam era.
History.
The Walschaerts valve gear was slow to gain popularity. The Stephenson valve gear remained the most
Kuhn slide
The Kuhn slide (German: "Kuhnsche Schleife") is part of a modified Walschaerts (German:"Heusinger") valve gear on steam locomotives and is named after its inventor, Michael Kuhn (1851–1903). The term is also used to refer to this particular type of Walschaerts valve gear system as a whole.
Overview.
Problems often arise in incorporating a Walschaerts valve gear into the design of tank and narrow gauge locomotives because of space limitations. The reversing rod (with its lifting arm), needed