Ashworth-Hepplewhite-Grey Safety Lamp
notes: label: Description
content: This flame safety lamp is an Ashworth Hepplewhite Gray style lamp manufactured by the American Safety Lamp & Mine Supply Company of Scranton, Pennsylvania during the late 19th or early 20th century. The lamp is a “test lamp” used to test for the presence combustible methane in the mine. The lamp has four tubes that run vertically from the top of the lamp to the glass enclosed flame. The tubes direct the mine’s air to the flame, which will produce a colored “cap” in the presence of methane. The larger the cap, the more methane is present. If the concentration of methane is combustible, the mine will need to be ventilated until safe working conditions are restored.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Mining
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content: Mining Lamps
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content: Work
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content: Industry & Manufacturing
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content: Grant Wheat Collection
publisher: label: Related Publication
content: Pohs, Henry A.. Early Underground Lamps
creditLine: label: Credit Line
content: Mary R. Wheat
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: AG.MHI-MN-8137
label: accession number
content: 239148
label: catalog number
content: MHI-MN-8137
objectType: label: Object Name
content: lamp, hand, mining
physicalDescription: label: Measurements
content: overall: 9 13/16 in; 24.892 cm