Ramsden electrical machine

Ramsden electrical machine

Details

Category:
Electricity and Magnetism
Object Number:
1936-595
type:
electrical machine
credit:
The Royal Institution

Parts

Two glass rods on wooden tripod bases

Two glass rods on wooden tripod bases

Two glass rods on wooden tripod bases, broken and incomplete, supports for prime conductor (Pt 5) associated with Ramsden electrical machine but not part of it.

Object Number:
1936-595 Pt1
type:
rod
Four pairs of friction pads

Four pairs of friction pads

Four pairs of friction pads, associated with Ramsden electrical machine but possibly not all belonging to it, also an envelope containing tinfoil and marked "Original tinfoil from outside of Leyden jar of Nairne's machine."

Object Number:
1936-595 Pt2
type:
friction pads
Two cylindrical brass conductors

Two cylindrical brass conductors

Two cylindrical brass conductors, two U-shaped brass charge collectors, one brass connecting rod, and four glass legs (one broken and part missing) of the prime conductor assembly of Ramsden electrical machine. (Wooden base missing.)

Object Number:
1936-595 Pt3
type:
conductors
Stand associated with Ramsden electrical machine

Stand associated with Ramsden electrical machine

One stand (possibly for a prime conductor) comprising two wooden feet with wooden tie-bar and two glass rods, two additional glass rods (of different type), a prime conductor (which does not fit the stand) consisting of a rusty metal tube and two metallised wooden balls fitting in the ends, a crank handle, a small brass ball on a (bent) metal rod, a long flexible conductor consisting of several rods (one of them on a handle) joined by wires, and a conductor with two hinged joints (one broken); all parts associated with Ramsden electrical machine but not necessarily part of it.

Object Number:
1936-595 Pt4
type:
stand
Large prime conductor

Large prime conductor

Large prime conductor (hollow wooden cylinder with hemispherical ends, foil covered, one end broken off but present), of size to fit on supports listed as Pt 1, associated with Ramsden electrical machine but not originally part of it

Materials:
wood (unidentified)
Object Number:
1936-595 Pt5
type:
conductor
Large glass plate

Large glass plate

Large glass plate, probably part of Ramsden electrical machine

Object Number:
1936-595 Pt6
type:
glass plate