Accession No

4460

Brief Description

potentiometer and current regulator, by H. Tinsley and Company, English, 1924

Origin

England; London

Maker

H. Tinsley and Company

Class

electrical

Earliest Date

1924

Latest Date

1924

Inscription Date

Material

wood (mahogany); metal (brass); plastic (ivorine, bakelite)

Dimensions

current regulator 230mm h x 615mm l x 360mm w. Potentiometer length 614mm; breadth 362mm; height 233mm

Special Collection

Provenance

Donated by Imperial College London.

Inscription

‘H. TINSLEY & CO LONDON S.E. NO 23659 EMBODYING PAT. NO 329445’ (current regulator)
‘R.C.S.
PHYS-LAB
2543’ (ivorine plaque on lid of potentiometer)
‘H. TINSLEY & CO LONDON S.E. NO 23662 EMBODYING PAT. NO. 329445’ (top of potentiometer)
‘THERMO-ELECTRIC POTENTIOMETER
DIESSELHORST PATTERN’ (top of potentiometer)

Description Notes

Potentiometer in rectangular wooden box. Bakelite platform with five dials of brass and bakelite for setting different levels of resistance; each one numbered 0 - 10 by 1. Selector switch and switch for setting the connection at galvanometer, series or resistance. Further switch for use as a galvanometer. Four sets of brass terminals at back for connection to battery, standard cell, ‘X’ (resistance) or galvanometer.

Current regulator in wooden box with separate lid. Inside lid is a diagram showing the connections to the potentiometer.
Black plastic surface on which are set a rheostat and two resistors with fixed set of settings. Also a current switch for .01 or .001 Amps. All the resistors have black plastic knurled knobs. The two with fixed setting have circle of brass cylinders set around them, each marked with a different resistance.
Terminals on side of box to standard cell, battery, standard cell potentiometer and battery potentiometer.

Condition good.

References

Events