(57) A mechanical drive between parallel shafts, especially in apparatus displaying advertisements
through rotary bodies forming together different advertisements sequentially, comprising,
according to the invention, a planate rigid member (21) movable in a plane substantially
perpendicular to the axes of said shafts (15, 15.1), rotatably connected with a plurality
of end cranks (23) integral with said shafts (15, 15.1), in such a way that the rotating
movement imparted from a main shaft (15.1) is transmitted, by means of its end crank
(23) and the aforesaid rigid member (21), to the secondary shafts (15), by means of
the respective end cranks (23).
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