Telegraph block instrument

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Science Museum Group Collection

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; G. K. Winter/J. Craik (Patents: 1880/1885). Combined absolute pegging 1-needle (red) 2-position/2-indication "On Line(red)/Cleared(black)" (Accepting: "Train Coming From"), behind/above which a bell-assembly is mounted, and beneath which is a large brass-handle commutator, positions "On" (red)/ "Off" (black). Below the commutator is a central brass-mounted, large black-bakelite bell-plunger. In the centre of the baseboard is painted in white the letter "A". The instrument is missing its cover-case, removed to show mechanism.

Details

Category:
Signalling & Telecommunications
Object Number:
1909-8/2
type:
telegraph block instrument
credit:
Imperial Institute of the United Kingdom of the Colonies & India