Accession No

3658

Brief Description

sound spectrograph, by Kay Electric Co. circa 1952

Origin

Pine Brook; New Jersey; U.S.A.

Maker

Kay Electric Company

Class

sound

Earliest Date

1952

Latest Date

1952

Inscription Date

Material

metal (white metal - at least four types); plastic (at least five types); glass; paper; hide (leather)

Dimensions

one part length 470mm; breadth 355mm; height 250mm other part length 500mm; breadth 440mm; height 505mm

Special Collection

Provenance

Transferred from Department of Veterinary Anatomy, University of Cambridge, Cambridge, England, 1987.

Inscription

‘SONA-GRAPH
Sound Spectrograph
KAY ELECTRIC CO.
PINE BROOK, N.J.
PAT. PENDING’ (front)
‘Kay Electric Company’ (galvanometer dial)

Description Notes

First part: Black-painted metal instrument. Carrying handles at sides; ventilation grills on sides and back. Back has connection points for various electrical leads. Front carries the instrumentation panel. This consists of dials for recording and reproduction level, selection between recording and reproduction, filter choice, monitor gain, band selector, mark level and sectioner; loudspeaker; on/off switch, microphone input, recording light and galvanometer divided -20 - +3 and also [0] - 100.
Various leads for connection to mains and for microphone.
Comes with original instruction manual, instructions written in the department, a log book (with dates in 1979) and spare scales.

Second part: Square box covered in mock leather with leather reinforcements at the corners. Ventilation grills on sides. Hinged cover at back for electrical connections. Two black-plastic carrying handles on sides. On top of the unit sits a white metal recording drum with base scale divided 1 - 24, numbered by 1. A short bar carries the recording pen, this bar moves up and down a vertical screw and is connected to the first part of the instrument by the electrical leads. Cover is held to box by four white metal clips.

Condition fair (casing on one of the cables has broken); complete

References

Events