Telegraph block instrument, early Walker's type

Buy this image as a print 

Buy

License this image for commercial use at Science and Society Picture Library

License

Buy this image as a print 

Buy

License this image for commercial use at Science and Society Picture Library

License

Buy this image as a print 

Buy

License this image for commercial use at Science and Society Picture Library

License

Buy this image as a print 

Buy

License this image for commercial use at Science and Society Picture Library

License

Buy this image as a print 

Buy

License this image for commercial use at Science and Society Picture Library

License

Buy this image as a print 

Buy

License this image for commercial use at Science and Society Picture Library

License

Science Museum Group
© The Board of Trustees of the Science Museum

Science Museum Group
© The Board of Trustees of the Science Museum

Science Museum Group
© The Board of Trustees of the Science Museum

Science Museum Group
© The Board of Trustees of the Science Museum

Science Museum Group
© The Board of Trustees of the Science Museum

Science Museum Group
© The Board of Trustees of the Science Museum

Telegraph block instrument with combined bell and tapper. Early Walker's type. Absolute double-semaphore (lower-quadrant) block-indicators (top: red/white strip; bottom: white/black strip), mounted (at different levels) on vertical wooden finialled post. This instrument requires a separate commutator-box with bell-key/plunger, and bell-assembly. Later Walker's instruments were rectangular, with the block-indicators at the same level, and a bell-assembly mounted on the top.

Details

Category:
Signalling & Telecommunications
Object Number:
1996-7028
type:
telegraph instrument
credit:
British Rail