Timepiece with independently alterable hour display, especially in case of time zone changing

摘要

The invention relates to a timepiece including: … …  - an inner hour pipe (2) supporting a lower gear (6), …  - an outer pipe (30) mounted on the inner pipe (2) and supporting an upper gear (32) arranged above the lower gear (6), …  - a star (12) mounted on the hour pipe (2) and solid in rotation with the lower gear (6), …  - two entrainment rollers (20) cooperating with the star (12) and entrained by the upper gear (32), and …  - a spring (26) returning the roller (20), this piece being characterised in that the lower gear (6) which forms an hour gear engaging with a minute wheel is mounted so as to rotate freely with respect to the inner hour pipe (2), whilst the upper gear (32) forms a correcting gear capable of acting on the hour pipe (2) in order to alter the time displayed. … … IMAGE …