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Gulstad Relay, by Elliott Brothers (London) Ltd, London, Early 20th Century

Inventory Number 91761

Acknowledgement: © History of Science Museum, University of Oxford, inv.91761

Item type
Object
Provenance
Presented by the Marconi Corporation in 2004.
Primary inscriptions
"ELLIOTT BROTHERS / (LONDON) LTD. / GULSTAD / RELAY / 236 / SPACING MARKING / CLOSE OPEN" printed on exterior surface of cylinder. "37 EE 247 1" painted on side of base.
Physical material
Metal
brass
glass
nickel.
Object type
Radio communication
Dimensions
Height: 160mm Width: 140mm Depth: 115mm
Inventory No
91761
Accession Number
2004-9/433

Description

Gulstad Relay consisting of glazed top lacquered brass cylinder on black-painted rectangular metal base. With two brass dials on lower section of cylinder, one marked "SPACING", "MARKING" and the other marked "CLOSE", "OPEN". Glazed top reveals various brass components and a nickel-plated needle. Underside of base mostly hollowed out and reveals various metal and nickel-plated contacts. Previously catalogued with two other relays (Inv. Num.s 46067, 13183).

Elliott Brothers adopted the style Elliott Brothers (London) Ltd. at the end of 1916.

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