Accession No

6564

Brief Description

Du Bois-Reymond-type induction coil (physiological stimulator), by C. F. Palmer Ltd, English, early/mid- twentieth century

Origin

London, England

Maker

C. F. Palmer Ltd.

Class

physiology; electrical; laboratory apparatus

Earliest Date

1920

Latest Date

1987

Inscription Date

Material

Wood; leather; Metal (copper, brass, iron?)

Dimensions

360 mm (width) x 130 mm (height) x 110 mm (depth)

Special Collection

Provenance

Donated by an individual on or before 09/12/2010.

Inscription

C. F. PALMER (LONDON) LTD
63 EFFRA ROAD
LONDON S. W. 2

Description Notes

Du Bois-Reymond-type induction coil (physiological stimulator), by C. F. Palmer Ltd, English, early/mid- twentieth century.

Du Bois-Reymond-type induction coil physiological stimulator, by C. F. Palmer Ltd, used as an electrical stimulus for physiological experiments. Two coils are fixed on a length of wood, the larger of which can be moved to adjust the distance between the two coils and thus differentiate the strength of the current. At the rear of the coil (or on the left side), there is a brass pillar with holds a conductive strip, which can be adjusted using the top screw and the central pillar to connect to the helmholtz coil. This strip can interrupt the circuit and prevent the stimulus from reaching the destination. The model can be extended to reach X cm, and has a ruler fixed ruler with a sliding pointer to elucidate exact measurements, up to 50cm. Copper coil is not wrapped in anything, and secondary coil is wooden.

Some scratches to wood, discolouration to the various metals and maker’s logo. Has ‘H S’ written on indent of extension in black pencil(?). Very dirty.

Condition: good; complete.

References

Events