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Royal 'Ediswan' Christmas-tree lamp outfit

Lighting

1935-1940

'Royal Ediswan'

Lighting

c.1915

Cardew's voltmeter, patent, no. 147 (Ediswan)

Electricity and Magnetism

1890

Electro Convulsive Therapy (ECT) machine made in the early 1940s by Edison Swan Co. Ltd. to the specifications of W Grey Walter and used at the Burden Neurological Institute. Designed to give an electrical stimulus from the AC mains supply at a voltage varying from 60 to 150 volts, for a short preset period of time of typically 0.2 seconds. Use of this machine was discontinued in the 1970s. Serial no. SS35. Edison Swan labels appear to be apinted over. GRS stamped on one of the electrodes

Electroconvulsive therapy machine

Psychology, Psychiatry & Anthropometry

1940-1945

60 Watt 220 volt 'Royal Ediswan' gas filled electric Lamp

Lighting

1883-1923

Deflectional electro-dynamometer, portable

Electricity and Magnetism

1887-1900

E.H.T. Rectifier type 68508, serial no. 356

X-rays

1940-1957

Edison Light Bulb

Lighting

1930-1950

1000 Watt 220 volt 'Royal Ediswan' gas filled electric Lamp

Lighting

1883-1923

Light Bulb

Lighting

1930-1960

Ediswan Light Bulb

Lighting

1930-1960

1000 candle power 'Pointolite' electric Lamp

Lighting

1883-1923

Miner's Safety Electric Lamp, 1886

Mining & Ore Dressing

1886

"Q and I" detector, (modern), Edison and Swan

"Q and I" detector, Edison and Swan

Electricity Supply

c. 1931

Plug and power cable for Electro Convulsive Therapy (ECT) machine, by Edison Swan Electric Company Limited, 1940-1945, England

Power cable for electroconvulsive therapy machine

Psychology, Psychiatry & Anthropometry

1940-1945

Very early Edison and Swan 16CP carbon filament lamp

Edison and Swan 16cp carbon filament lamp

Lighting

Two blowing irons, c. 1928

Glass Technology

1928

Pointolite high intensity microscope lamp, by W. R. Prior and Co (Bishops Stortford, Herts), Santon Ltd and Edison Swan Electric Light Co., 155 Charing Cross Road, London, WC2, England, 1950-70.

Pointolite high intensity microscope lamp, by W. R

Microscopy (Wellcome)

1950-1970