| 摘要 |
Device for driving movable objects along relative trajectories alternatingly in the same direction (parallel) and in opposite directions and application to objects and animated signs. The invention relates to a mechanism comprised of toothed wheels E1, E2, E3 etc. provided with small rods B which activate lever rods D1, D2 etc. of which the extremities animate objects O1, O2, O3 (screens, filters, subjects, windscreen wipers etc...) of which the trajectory will be cyclically either parallel or opposite. These alternations are caused by their driving or non-driving by means of a basic toothed wheel R1, which driving is linked to the presence or absence of teeth of superposed toothed wheels R2, R3 which are facing it. This device is particularly intended to the animation of lit or unlit signs according to the presence of the light source on the moving object and the nature of the moving objects. |
