General transport advertisement poster - has frame in which plate moves forward or backward when vehicle accelerates or brakes

摘要

The poster is to be placed inside trains, trams, underground railway trains, suspension railways, buses etc. The poster consists of a rectangular base plate (1) with pref. two guiding elements (2, 3), in which a smaller, rectangular advertising plate (4) can slide. Owing to its inertia, it moves forward or backward when the vehicle brakes or accelerates, up to a fixed stop (9, 11) on the base plate (1). The base plate (1) is made from hard fibre sheets, plywood, cardboard, pasteboard or similar material. On both of the long sides there are U-shaped guide strips (2, 3) made of aluminium or artificial material. Between the strips the advertising plate (4) (of similar material) is slid. On the short edge of the large plate (1) lies a stop, for example in the form of a U-shaped doctor plate.