| Year | 1905 |
| Date | 29-Jun |
| Volume | 12 |
| Issue | 218 |
| Page | 612 |
| Category | Railway |
| Part | 3 |
| Title | Railway Signals and Signalling |
| Author | Chas. S.Lake |
| Notes | Signal Mechanism. Single arm post with operating mechanism, combination signal-post with "Somersault" arms G.N.R., "slot" controlling mechanism, signal wire adjusting device |