Accession No

4365

Brief Description

recorder, strip (thread), by Cambridge Scientific Instrument Company Ltd., English, 1909

Origin

England; Cambridge

Maker

Cambridge Scientific Instrument Company Ltd.

Class

electrical

Earliest Date

1909

Latest Date

1909

Inscription Date

Material

wood; glass; metal (iron); plastic (ivorine)

Dimensions

breadth 460mm; height 365mm; depth 295mm

Special Collection

Cambridge Instrument Company Collection

Provenance

Donated by the Cambridge Instrument Company.

Inscription

‘THE CAMBRIDGE SCIENTIFIC INSTRUMENT CO. LTD. CAMBRIDGE. ENGLAND. No. 8423’ (on front of base)
‘THE
CAMBRIDGE SCIENTIFIC
INSTRUMENT CO. LTD.
CAMBRIDGE, ENGLAND.
No. 8423’ (on ivorine plate on door)

Description Notes

Rectangular wooden box with hinged, locking, glazed door and glazed window in top; one fixed foot and two levelling feet; cast-iron instrument frame removable from box; suspended coil D’Arsonval galvanometer at rear with long pointer extending to drum recorder at front; clamp and zero adjustment at top; upper of two clockworks depresses pointer on inked thread every minute (or half minute); the continuous inked thread is also moved along a system of pulleys periodically; lower clockwork rotates chart drum once per 25 hr. (or 2 hr. 5 min.); two terminals on base of frame for input potential; exchangeable resistance coil; two channels; one thread. With two clockwork keys; Camb. Inst. Co. repair label dated 10-4-62 made out to ‘Camb. Univ. Metall. Dept.’; instruction labels for using thermocouples attached to the two input resistances.
Similar to Wh: 4360, but larger.

Condition: fine (galvanometer suspensions intact, clockworks operational, in working order); complete.

References

Events