Accession No

3785

Brief Description

electrostatic machine, 1875-1900 (c)

Origin

Maker

Class

electrical; demonstration

Earliest Date

1875

Latest Date

1900

Inscription Date

Material

wood; glass; plastic (ebonite); paper; metal (brass)

Dimensions

length 745mm; breadth 480mm; height 680mm

Special Collection

Provenance

Inscription

Description Notes

Wooden open-frame base, four upright glass and wood. Central ebonite axle for two circular glass plates, connected by two drive bands and adjustable pulley wheels to crank and turning handle. Two larger fixed plates, between the driven ones, held by adjustable ebonite mounts; each fixed plate with two apertures and two applied pieces of paper (the field plates) with strips extending through the apertures to the moving plates. Two U-shaped brass comb collectors linked to conductors at the back of the machine.

One of the field plates has become detached from object and is stored separately.

References

Events