Accession No

4037

Brief Description

temperature recorder, strip (ohmmeter) type, by Robert W. Paul, English, 1915 (c)

Origin

England; London

Maker

Paul, Robert W.

Class

electrical

Earliest Date

1915

Latest Date

1915

Inscription Date

Material

metal (steel, brass); plastic; paper; wood; glass

Dimensions

length 555mm; breadth 260mm; height 246mm

Special Collection

Cambridge Instrument Company Collection

Provenance

Donated by the Cambridge Instrument Company.

Inscription

‘TEMPERATURE
RECORDER No. 61
GALVANOMETER UNIT No. 272
PATD. 6113/03 14592/06
10048/10 - RD. 633864
Robt. W. Paul. London. N.’ (on brass plate inside recorder)

Description Notes

Steel case with posts for wall-mounting; removable, curved, transparent plastic cover; electric motor in right hand compartment, meter and paper recorder in left; two-coil, pivoted ohmmeter (‘Harris Indicator’) at back of left compartment, pointer extending to front paper-rolling mechanism, with black-and-red typewriter ribbon; electric motor, with centrifugal governor, drives paper advance, periodically depresses bar to lower pointer onto typewriter ribbon and chart, alternately switches between two inputs, changes ribbon position from black to red, and advances ribbon; wooden trough for paper roll, and slot in bottom of case for recorded paper; two extra worm wheels; steel handles on either side for retaining cover.

Condition: fair; incomplete (pointer on ohmmeter movement, some wiring, and glass fronted receptacle for recording paper missing).

References

Events