Signalling Record Society
Signalling Primers and Educational Videos
Tappet Locking
A V Morton, Signalling Engineer of the London Midland & Scottish Railway at Crewe once described tappet locking as something simple but as annoying as a crossword puzzle to work out. In this video Charles Weightman explains with the aid of a wooden demonstration unit, just how the mixture of locks and releases works to enforce safe working of traffic.
Video Credits
| Filmed by: | George Duncan & Richard Pulleyn |
| Filmed in: | 2017 |
| Narrator: | Charles Weightman assisted by Richard Pulleyn |
| Video Editor: | George Duncan |
Copyright © of the FARSAP videos belongs to the Friends of the National Railway Museum.
The material may be freely used except for sale or advertising purposes.