| Year | 1923 |
| Date | 04-Oct |
| Volume | 49 |
| Issue | 1,171 |
| Page | 373 |
| Category | Railway |
| Part | 7 |
| Title | Some Notes on the Development of Railway Signalling |
| Author | E.H.Ellingham |
| Notes | Signal and Point Connections. Traversing point rod-roller, compensator, compensated point rodding |