![](https://coimages.sciencemuseumgroup.org.uk/733/86/large_thumbnail_smg00456024.jpg)
![](https://coimages.sciencemuseumgroup.org.uk/733/86/large_thumbnail_smg00456024.jpg)
Replica model, Howe's link motion gear
Model steam locomotive valve gear
model walschaert'svalve gear
1924
Demonstration model, Great Western Railway valve gear
1920-1940
Sectioned Model of Steam Locomotive Valve Gear
Stephenson's link
bouch's reversing screw
Model of Locomotive Valve Gear
1920-1930
corliss model 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