SAFETY BOLT
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Item owner - FNM
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Category - FNM Collection
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Inventory - 0659
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Author - Ferrovie Nord Milano
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Dimensions - 7x4.5x15 cm
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Dating - 1900-1940
Consists of a solid forged piece with a rectangular cross section, with the letters FNM raised on its front. In its lower part are 3 narrow slits serving as keyholes for 3 narrow keys. A piston emerges from the back with a solid cylinder which has a larger, rounded head.
This type of bolt was invented and produced by Ferrovie Nord Milano to safely lock the doors of goods railcars.