The escapement racks for the hour (11), for the quarter-hour (10) and for the minutes (9) on the minute-repeater are mounted such that the same pivot about a common axis (14), with the escapement racks for the hour and the quarter-hour on one side, and the racks for the quarter-hour and for the minutes on the other side connected by a unidirectional drive connection having a ratchet (15, 17), a toothed pawl (10a, 9a) engaging with the ratchet, a banking pin (10b, 9b) and a cam (16b, 18b) to enable selective engagement of the ratchet with the pawl teeth. The end of the motor spring is kinetically secured to the two separate sets of activating pawl teeth (13a, 13b) for the first chime lift (21), with the first set of teeth (13a) for the hour chime, and the second set of teeth (13b) for chiming quarter-hours and minutes.