Accession No

2056.2

Brief Description

light anode type X-ray focus tube, ‘Cox’s Record Tube’, by Cox, English, 1/4 20th Century

Origin

England; London; 1A Rosebery Avenue; 15–21 Laystall St.

Maker

Cox

Class

physics

Earliest Date

1900

Latest Date

1925

Inscription Date

Material

glass; metal (at least two white metals, copper; brass?); rubber; paper

Dimensions

height 350mm; breadth 135mm; depth 160mm

Special Collection

Cavendish collection

Provenance

Transferred from Cavendish Laboratory, University of Cambridge, 09/1974.

Inscription

‘Cox’s Record.
NO 5060’ (etched into glass of main chamber)
‘COX’S RECORD TUBE
No 2975
MANUFACTURERS OF
X RAY APPARATUS,
1A ROSEBERY AVENUE,
15–21 Laystall St.,
E.C.’ (paper label on cathode tube)

Description Notes

Light anode type X-ray focus tube, ‘Cox’s Record Tube’, by Cox, English, 1/4 20th C.

Glass tube with central spherical chamber. White metal rod anode in arm. Opposing long tube with side arm containing white metal cathode ending in concave disc. Side arm with connection for the target, which consists of a white metal disc. Metal (brass?) caps on electrodes to aid electrical connection; spiral metal wire connects anode and target.

Condition good; complete.

References

Events