Footplate Daze: Different types of valve-gear

Different types of valve-gear

Practising the use of valve-gear control (reverser control bar, or cut-off control, or Johnson bar) on different types of locomotive.

The locomotive shown here had no counterweights on the valve-gear mechanism, so pulling the lever lifted the whole linkage. You must prepare to take the weight before releasing the catch, or you'll be pitched forward.