Accession No

3328

Brief Description

recorder, strip (Wattmeter), by Evershed and Vignoles Ltd., English, 1900-1925 (c)

Origin

England; London

Maker

Evershed and Vignoles Ltd.

Class

electrical

Earliest Date

1900

Latest Date

1925

Inscription Date

Material

wood; metal; glass; hide (leather)

Dimensions

height 530mm; breadth 220mm; depth 207mm

Special Collection

Provenance

Transferred from Department of Engineering, University of Cambridge, Cambridge, England, 1986.

Inscription

‘RECORDING WATTMETER
MURDAY SYSTEM
3 PHASE 3 WIRE AND
3 PHASE 4 WIRE
UNBALANCED LOAD’ (on plate on door)
‘EVERSHED & VIGNOLES LTD
LONDON’ (on plate on door)
‘INVENTORY 13/7
ITEM No. 50’ (on plate on door (added))

Description Notes

Upright rectangular wooden box on metal base; leather carrying handle; hinged and locking door with glazed window; two fixed and two pivoted coils; two pairs of terminals for current (fixed coils) and three terminals for voltage (pivoted coils); rear section of box, behind removable back plate with ventilation holes, contains twenty-eight resistance coils, fourteen in series with each pivoted coil; adjustable electromagnetic damping; clockwork drive for recorder, with large winding lever; white dial with scale, 0 to 8 kilowatts; no lamp. With door key.

Condition: good (coil pivot intact, clockwork operational); incomplete (pen missing).

References

Events