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Alfred Fenwick
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Individual
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Publication of GB190521249ApublicationCriticalpatent/GB190521249A/en
21,249. Fenwick, A. Oct. 19. Signals, lamp, electriclamp, colour, and indicator or visible. - A day or night signalling-apparatus comprises a casing a having in its sides openings b which can be illuminated by electric or other lamps within the casing, over each of which openings is a disk c divided into sectors e, which are alternately opaque and transparent, some of the sectors bearing crook-shaped or other signs and some of them being plain, the said disk c being movable round its centre d and having superposed on it another disk h also movable round its centre and having in it a single sector opening i. The sectors e may be plain or distinctively coloured.
GB190521249D1905-10-191905-10-19Improvements in Apparatus for Day and Night Signalling.
ExpiredGB190521249A
(en)