

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