Accession No

1306.1

Brief Description

telegraph transmitting key, by Warden, Muirhead and Clark, English, second half 19th century

Origin

England; London; Westminster

Maker

Warden, Muirhead and Clark

Class

electrical

Earliest Date

1850

Latest Date

1900

Inscription Date

Material

wood (mahogany); metal (brass, steel, white metal); plastic (ebonite, bakelite)

Dimensions

length 291mm; breadth 227; height 122mm

Special Collection

Cavendish collection

Provenance

Transferred from the Cavendish Laboratory, University of Cambridge. Recorded in the 1894 Cavendish Laboratory alphabetical catalogue of instruments on p.103.

Inscription

‘Warden, Muirhead & Clark.
WESTMINSTER.’ (bottom left of base plate)

Description Notes

Rectangular mahogany base with four feet, supporting bakelite base plate. Brass telegraph key with ebonite handle connects to four white metal strips running to terminals. Brass crank handle on left of instrument depresses one of three white metal strips as it is rotated. Six brass terminals at top end of plate, marked L, Z, E, C, R and K. Plug switches for setting to ‘send’ and ‘receive’.

Condition good; complete.

References

Events