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Electroconvulsive therapy machine

Electroconvulsive therapy machine

1940-1945
"Q and I" detector, Edison and Swan

"Q and I" detector, Edison and Swan

circa 1931
Fleming Oscillation Valve

Fleming Oscillation Valve

1905
Royal 'Ediswan' Christmas-tree lamp outfit

Royal 'Ediswan' Christmas-tree lamp outfit

1935-1940
1000 candle power 'Pointolite' electric Lamp

1000 candle power 'Pointolite' electric Lamp

1883-1923
Miner's Safety Electric Lamp, 1886

Miner's Safety Electric Lamp, 1886

1886
Fleming Oscillation Valve

Fleming Oscillation Valve

1905
Fleming diode

Fleming diode

1905
'Royal Ediswan' metal filament lamp

'Royal Ediswan' metal filament lamp

circa 1915
1000 Watt 220 volt 'Royal Ediswan' gas filled electric Lamp

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

1883-1923
Cardew's voltmeter, patent, no. 147 (Ediswan)

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

1890
100 candle power 'Pointolite' electric Lamp

100 candle power 'Pointolite' electric Lamp

1923
Deflectional electro-dynamometer, portable

Deflectional electro-dynamometer, portable

1887-1900
60 Watt 220 volt 'Royal Ediswan' gas filled electric Lamp

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

1883-1923
Fleming diode base

Fleming diode base

1904
Fleming diode

Fleming diode

1904
Blowing iron, c. 1928

Blowing iron, c. 1928

circa 1928
Blowing iron, c. 1928

Blowing iron, c. 1928

circa 1928
Power cable for electroconvulsive therapy machine

Power cable for electroconvulsive therapy machine

1940-1945
E.H.T. Rectifier type 68508

E.H.T. Rectifier type 68508

1940-1957
Ediswan AT.50 triode valve, McVitie Weston valve collection, 1906-1957

Ediswan AT.50 triode valve, McVitie Weston valve collection, 1906-1957

1906-1957
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

1940-1945
1 letter

Letter from Edison Swan Technical Services Dept to William Grey Walter, 19 December 1939

2 letters

Letter from K.D.F. Townend to William Grey Walter, 10 March 1942

1 letter, 2 pages

Letter from K.D.F. Townend to William Grey Walter, 22 July 1941

1 letter

Letter from J.W. Ridgeway to William Grey Walter, 8 January 1943

1 letter

Letter from S. Bulmer to William Grey Walter, 3 December 1945

1 letter, 3 pages

Letter from J.W. Ridgeway to William Grey Walter, 6 August 1943

2 letters

Letter from S. Bulmer to William Grey Walter, 1 July 1946

1 letter

Letter from S. Bulmer to William Grey Walter, 28 April 1947

1 letter, 3 pages

Letter from Norman Ellis to William Grey Walter, 1 March 1946

1 letter, 3 pages

Letter from S.N. Pocock to William Grey Walter, 4 May 1948

1 letter

Letter from J.W. Ridgeway to William Grey Walter, 23 March 1942

1 letter

Letter from J.W. Ridgeway to William Grey Walter, 8 July 1941

1 letter

Letter from J.W. Ridgeway to William Grey Walter, 23 July 1943

1 letter

Letter from K.D.F. Townend to William Grey Walter, 3 May 1943

1 letter, 2 pages

Letter from S.N. Pocock to William Grey Walter, 14 May 1947

1 letter, 2 pages

Letter from S. Bulmer to William Grey Walter, 21 March 1946

1 letter with 2 page memorandum

Letter from J.W. Ridgeway to William Grey Walter, 10 March 1948

1 letter

Letter from C.C. McCallum to Burden Neurological Institute, 3 September 1943

1 letter, 2 pages

Letter from S.N. Pocock to William Grey Walter, 4 July 1947

1 letter, 2 pages

Letter from Norman Ellis to William Grey Walter, 18 February 1946

2 files, 49 items

Correspondence with the Edison Swan Electric Company

Original Fleming diode, 60 S16, (RMW/A1A - McVitie Weston number), by The Edison and Swan Electric Light Company Limited, c.1904, invented by Sir (John) Ambrose Fleming and used by Fleming in October 1904.

Fleming diode

1904
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

1950-1970
Two blowing irons, c. 1928

Two blowing irons, c. 1928

1928
Very early Edison and Swan 16CP carbon filament lamp

Edison and Swan 16cp carbon filament lamp

transformer with bar through it. manufactured by Edison Swan United Electric Light Co, Manchester

Transformer with Bar