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12 Volt Fleming Valve, by Ediswan, London, c. 1905

preview image for 12 Volt Fleming Valve, by Ediswan, London, c. 1905
Inventory Number: 89342
Object Type:
Place Created: London England United Kingdom Europe
Accession Number: 2004-9/580
Brief Description: 12 Volt Fleming Valve, in polished mahogany? gallows mounting. With ebonite panel and metal alloy terminal upon upper surface of gallows. With two metal alloy terminals upon upper surface of base. Bulb has vertically-mounted nickel anode and other metal components. Previously catalogued with other, similar 4 Volt Fleming Valve (Inv. Num. 67148).
Primary Inscriptions: "FLEMING OSCILLATION VALVE / 12 VOLTS / EDISWAN" printed on exterior surface of bulb. "12 VOLT FLEMING OSCILLATION / VALVE / ex POLDHU HOTEL" typed on label stuck upon exterior surface of bulb.
Provenance: Presented by the Marconi Corporation.
Collection Group: Marconi Collection
Material(s): glass
ebonite
metal alloy
nickel
assorted metals.
Dimensions:
Height Width Depth Diameter Unit
127 100 100 mm

Narratives

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