Accession No

4356

Brief Description

recorder, strip (Callendar), by Cambridge Scientific Instrument Company Ltd., English, 1913

Origin

England; Cambridge

Maker

Cambridge Scientific Instrument Company Ltd.

Class

electrical

Earliest Date

1913

Latest Date

1913

Inscription Date

Material

wood; glass; metal

Dimensions

height 770mm; breadth 420mm; depth 210mm

Special Collection

Cambridge Instrument Company Collection

Provenance

Donated by the Cambridge Instrument Company.

Inscription

‘THE CAMBRIDGE SCIENTIFIC INSTRUMENT CO. LTD.
CAMBRIDGE ENGLAND.
No. 448
CALLENDAR’S PATENT
U.K. 16718. 1897
U.S.A. 642674 Feb 6. 1900’ (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, with continuous-roll paper recording mechanism; lower, including two pairs of electrical input terminals (marked ‘C’ and ‘P’), switches, and resistance coils.
Similar to Wh: 4351.

Condition: poor (galvanometer suspension intact, drum clockwork loose, door broken); incomplete (door glass missing).

References

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