Summary
115 Volt, 50 Watt, coiled tungsten 'triple inverted V' filament, electric lamp. Made by Siemens England. Used in the vertical, cap down position. This type of lamp was used in episcope or epidiascope projectors.
Physical Description
318 mm (12.5 inch) circumference, round, glass globe. Coiled tungsten filament, zig-zagged vertically between 7 wire supports and two glass rods. Exhausted at base of globe. Prefocus P28 cap. Single pin contact.
More Information
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Collecting Areas
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Acquisition Information
Unknown Acquisition Method from Unknown Source
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Manufacturer
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Inscriptions
On globe: [Museum registration number 27906] On globe, inside cap end: [illegible black ink markings] On stem: ' 115 ' On cap: ' SIEMENS / MADE IN ENGLAND / 115V 500W / 82 ', ' E/1 '
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Brand Names
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Classification
Energy technology, Illumination - electric, Electric light globes
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Category
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Discipline
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Type of item
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Overall Dimensions
140 mm (Length), 318 mm (Circumference), 90 mm (Outside Diameter)
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Keywords
Electric Lamps, Electric Light Globes, Electric Light Lamps, Electric Lighting, Electric Lights, Tungsten Mineral Products