Accession No

2059

Brief Description

rectifier for X-ray tube, by Gaiffe-Gallot et Pilon, French, c. 1922

Origin

France

Maker

Gaiffe-Gaillot et Pilon

Class

physics

Earliest Date

1922

Latest Date

1922

Inscription Date

Material

glass; metal (copper, brass, at least two white metals); paper; cloth (cotton wool)

Dimensions

length 545mm; maximum diameter 140mm

Special Collection

Cavendish collection

Provenance

Transferred from Cavendish Laboratory, University of Cambridge, 1974.

Inscription

‘Ets GAIFFE-GALLOT ET PILON
SOCIETÉ ANGYME-ASNIERES ET PARIS
SOUPAPE “KENOTRON”
LICENCE EXCLUSIVE POUR LA FRANCE
Ets GAIFFE-GALLOT & PILON, Sté Amo
ASNIERES ET PARIS’ (etched into glass)
‘X-RAY TUBE
SUPPLIED BY
WATSON & SONS (ELECTRO-MEDICAL) Ltd.
Sunic House, Parker Street, Kingsway, W.C.2
No C259 Date 21-12-22’ (paper label)

Description Notes

Glass vacuum tube with central spherical chamber tinged purple by gas. Electrodes in opposing tubes, one ending in open cylinder, inside which the other passes. Paper label at top with serial number and Watson & Sons’ number (given as C649) and initialled. Watson & Sons’ label completely covers another French label which can be partially read at one side. Cavendish label reads ‘Rectifier for X ray tube. ?American type. [later tick]. Kenotron or hot cathode valve tube.

Condition fair; complete.

References

Events