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Description: | This is an early type of lightbulb as produced by the Swan United Electric Light Company in 1883. The round, short-stemmed shape is typical of the early commercial Swan lamps. The bulb is fitted into Swan's patent spring holder. A single wire spring held the lamp down and assured good contact with the electricity supply. Early lightbulbs did not have metal caps on their stems, but were fitted directly into a holder. | License: | http://www.imagine.org.uk/about/copyright/ | Rights holder: | Tyne & Wear Museums | Subjects: | invention and innovation inventors and innovators made in the North East industry | Source: | Tyne and Wear Imagine | Identifier: | http://www.imagine.org.uk/details/index.... | Go to resource |
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