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Severiano Antonio De Castilho
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Publication of GB190721403ApublicationCriticalpatent/GB190721403A/en
21,403. Castilho, S. A. de. Sept. 26. Primers.-In combined electric and percussion primers, "blow-through" is prevented through the flash passage X and round the pole M by a copper ball R placed in the conical part of the passage, and by seating the pole in a conical block K in a corresponding recess in the body of the primer. The pole is insulated by the parts E, G, N and an oiled silk cone L.
GB190721403D1907-09-261907-09-26Improvements in Combined Electric and Percussion Primers for Ordnance.
ExpiredGB190721403A
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