1851 Great Exhibition: Official Catalogue: Class V.: Peter A. De Fontaine Moreau
From Graces Guide
610. DE FONTAINE MOREAU, PETER A., 4 South Street, Finsbury — Importer and Proprietor.
Vidie's patent warner, an apparatus intended to be placed above carriages, from which metallic plates descend into the carriages, indicating the name of the place or station towards which they are proceeding, or are stopping. On one side of the carriage an apparatus is intended to be placed, which can be put in action from the inside of the carriage, and serves to give an order or warning to the guard. At the time of starting all the metallic plates of a train can be reversed by turning a crank arm for that purpose; and the apparatus closes simultaneously with the door of the carriage.
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