

Replica model, Howe's link motion gear
model walschaert'svalve gear
1924
Demonstration model, Great Western Railway valve gear
1920-1940
corliss model valve gear
Stephenson's link
bouch's reversing screw
Model steam locomotive valve gear
Sectioned Model of Steam Locomotive Valve Gear
Model of Locomotive Valve Gear
1920-1930
Huntley's valve gear model
1853
model howe's link motion
1842
Model steam locomotive valve gear
walschaerts valve gear model
1900