Accession No

4354

Brief Description

recorder, strip (Callendar), by Cambridge Scientific Instrument Company Ltd., English, 1900 (c)

Origin

England; Cambridge

Maker

Cambridge Scientific Instrument Company Ltd.

Class

electrical

Earliest Date

1900

Latest Date

1900

Inscription Date

Material

wood; metal; glass

Dimensions

height 742mm; breadth 465mm; depth 215mm

Special Collection

Cambridge Instrument Company Collection

Provenance

Donated by the Cambridge Instrument Company.

Inscription

‘THE CAMBRIDGE SCIENTIFIC INSTRUMENT CO. LTD.
CAMBRIDGE ENGLAND.
No. 111
CALLENDAR’S PATENT.’ (on front of frame)

Description Notes

Upright rectangular wooden box for wall mounting; hinged, locking, glazed door; instrument, considered in three horizontal sections: upper, including suspended coil D’Arsonval galvanometer, contacts operated by galvanometer pointer, and clock mechanism to polish contact surfaces; centre, including two clock mechanisms (to drive the pen and slide-wire contact to left and right, respectively) whose brakes are released by the signals from the galvanometer relays, and the recording-paper drum, driven by a fourth clockwork; lower, including two pairs of electrical input terminals (marked ‘C’ and ‘P’), switches, and resistance coils. With two clockwork keys and door key.
Similar to Wh: 4351.

Condition: good (galvanometer suspension and wiring broken); complete.

References

Events