| RefNo | AP/39/20 |
| Level | File |
| Title | Unpublished paper, 'A system of train-signalling, by which also disabled trains may telegraph for assistance without the aid of portable apparatus' by Charles Walker |
| Date | 9 March 1857 |
| Description | Walker explains that 'in the early days of telegraphy, messages were sent and trains were signalled on the same wires, [and] no facilities existed for reducing the apparatus employed for the latter purpose, to a simple form. The case is now becoming different, special wires being largely devoted to train signals'. He describes a system of electromagnets and bells which can be used in train signalling.
Includes one page of figures and photographs of Walker's bell system.
Subject: Engineering
Received 9 March 1857. Read 19 March 1857.
Whilst the Royal Society declined to publish this paper in full, an abstract of the paper was published in volume 8 of the Proceedings of the Royal Society as 'A system of train-signalling, by which also disabled trains may telegraph for assistance without the aid of portable apparatus'. |
| Extent | 12p |
| Format | Drawing |
| Photograph |
| Manuscript |
| PhysicalDescription | Ink on paper |
| Digital images | View item on Science in the Making |
| AccessStatus | Open |
| RelatedMaterial | DOI: 10.1098/rspl.1856.0108 |
| RelatedRecord | RR/3/273 |
| RR/3/272 |
Fellows associated with this archive
| Code | PersonName | Dates |
| NA3784 | Walker; Charles Vincent (1812 - 1882) | 1812 - 1882 |