Miner's Electric Cap Lamp

Description (Brief)
Manufactured around 1930, the Edison Safety Mining Lamp consisted of a battery enclosed in a self-locking steel case that was worn on the miner’s belt. A flexible cord traveled to the lamp, which was worn on the miner's cap. The battery could power the six-candlepower lamp for 12 hours and was recharged at the end of a miner’s shift. This lamp is the R4 model, with a cutaway showing the battery inside the case.
Currently not on view
ID Number
catalog number
accession number
Credit Line
Mine Safety Appliances Company
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Work and Industry: Mining
Industry & Manufacturing
Natural Resources
Mining Lamps
Data Source
National Museum of American History


"Hi, I have one of these and am trying to rejuvenate it. It is the Edison R4. I believe these are the Alkaline edison battery but can you please tell me what voltage the bulb and battery is?"

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