Chronograph

A control mechanism for a simple three-cycle chronograph, comprising:

• a single pusher (A), whereby said pusher comprises a follower (4) with two noses (2, 3) mounted to oscillate on the pusher (P) and subjected to an elastic return action (7),
• wherein the noses (2, 3) of the follower (4) work with slots (8, 9, 10, 11, 12) that a shuttle (1) comprises in its peripheral thrust zone (Z3),
• wherein said shuttle (1) is pivoted around its pivoting axis (0), and
• wherein between actuations of said shuttle (1) by the pusher, said shuttle (1) is kept in one of three angular positions, i) resetting to zero, ii) starting, and iii) stopping, by way of a jumper(s) working with three notches (e1, e2, e3) of the periphery of the shuttle (1), the whole being arranged such that for each depression that is exerted on the pusher (A), the shuttle (1) passes from one position to the next in its operating cycle, from resetting to zero during operation, then operating with stopping, and finally stopping with resetting to zero.