Accession No

4044

Brief Description

double oscillograph, Irwin hot-wire type, by Robert W. Paul, English, 1910 (c)

Origin

England; London

Maker

Paul, Robert W.

Class

electrical

Earliest Date

1910

Latest Date

1910

Inscription Date

Material

metal (brass, oxidised brass); plastic (ivorine); glass

Dimensions

height 160mm; breadth 140mm; depth 105mm

Special Collection

Cambridge Instrument Company Collection

Provenance

Donated by the Cambridge Instrument Company.

Inscription

‘IRWIN OSCILLOGRAPH
PATENT
Robt. W. Paul, London, N.’ (plate screwed onto base)

Description Notes

Double oscillograph, Irwin hot-wire type, by Robert W. Paul, c. 1910.

Rectangular brass base with three brass levelling feet. Two standards pivoted about vertical axis support two rectangular oil baths, pivoted about horizontal axis. Motions controlled with strings and screw adjustment. Oil baths have circular hole in front; three terminals on ivorine strip at tops. Opening at back of each oil bath for adding oil. Central post between oil baths supporting fixed mirror (missing).

Condition good (suspensions appear intact); incomplete (one vibrating mirror and fixed mirror missing).

References

Events