Patent ID: 8588031

Claim:
A movement for a complication timepiece provided to rotatably drive an hour hand and a minute hand for civil time and comprising a running equation of time device having a pipe mounted to rotate concentrically to the minute and hour hands for civil time and provided to support a minute hand for solar time, wherein the equation of time device comprises an equation of time cam rotatably driven by the movement at a rate of one revolution per year, and a correction mechanism provided to periodically adjust the angular displacement of the minute hand for solar time in relation to the minute hand for civil time as a function of the angular position of the equation of time cam, wherein the correction mechanism comprises: locking means comprising a control lever and provided to interlock said pipe and the minute hand for civil time, wherein said locking means are arranged to release said pipe when a force is applied to said control lever and to lock said pipe again when said force ceases to be applied; an actuating device driven by the movement and provided to periodically apply a force to said control lever at a regular interval corresponding to an integer number of hours; wherein the correction mechanism additionally comprises: a heart-piece secured to said pipe and an equation of time lever provided to cooperate with the heart-piece; a kinematic chain linking the profile of the equation of time cam to a frame pivoted concentrically to the axes of the hands, wherein the equation of time lever is mounted to pivot on the frame in decentralised position and a spring is also arranged on the frame in order to return a free end of the equation of time lever against the heart-piece.