Retrograde display mechanism for timepiece

摘要

The mechanism has a star wheel (1) with succession of points having flanks (B, C) against which a feeler integrated to a needle support itself under action of a spring (2). The flanks are dimensioned according to data to be displayed. An abutment stops backward rotation of hour wheel under action of the spring, after that the feeler terminates its action on the flank (B) and fall again on a next flank for a new cycle.