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Ernest Arthur Hailwood
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Individual
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Individual
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Publication of GB190519255ApublicationCriticalpatent/GB190519255A/en
19,255. Hallwood, E. A. Sept. 23. Miners' safety lamps.-In magnetically-released locking-devices of the type described in Specification No. 23,765, A.D. 1896, the locking-bolt C is protected from interference by a shield E, interconnected with the bolt C and provided with a spring F.
GB190519255D1905-09-231905-09-23Improvements in or relating to Miners' Safety Lamps.
ExpiredGB190519255A
(en)