Abstract: The escapement (1) arranged between a motor gear train and a roller (2) to which is attached a sprung balance of a timekeeper, the balance being able to describe an arc of free oscillation and to receive oscillation maintaining impulses, this escapement including first (3) and second (4) toothed wheels meshing with each other, one of these wheels being driven by the motor gear train and a rocking member (5) having: first (41) and second (42) contact means able to receive impulses generated alternately by the first (3) and second (4) wheels, impulse means (11, 12) capable of co-operating with the roller (2) to transmit said impulses to said roller to drive it in rotation and to maintain the oscillations of the balance, and first (43) and second (44) blocking means for alternately blocking said first (3) and second (4) wheels after each impulse transmitted by said impulse means to said roller, said first and second contact means and said first and second blocking means being arranged at the periphery of the

Abstract: The escapement includes first (3) and second (4) escapement wheels meshing with each other, one of these wheels being driven by the gear train. It further includes a lever (5) capable of receiving the impulses generated alternately by the first and second wheels and to transmit these impulses to a plate (2) which carries a sprung-balance. The lever is arranged to lock alternately the first and second wheels after each impulse transmitted.

Abstract: The escapement (1) arranged between a motor gear train and a roller (2) to which is attached a sprung balance of a timekeeper, the balance being able to describe an arc of free oscillation and to receive oscillation maintaining impulses, this escapement including first (3) and second (4) toothed wheels meshing with each other, one of these wheels being driven by the motor gear train and a rocking member (5) having:

Abstract: The escapement includes first (3) and second (4) escapement wheels meshing with each other, one of these wheels being driven by the gear train. It further includes a lever (5) capable of receiving the impulses generated alternately by the first and second wheels and to transmit these impulses to a plate (2) which carries a sprung-balance. The lever is arranged to lock alternately the first and second wheels after each impulse transmitted.

Abstract: The escapement (10) includes first (6) and second (7) wheels meshing with each other. One (6) of these wheels is driven by the gear train. First (9) and second (11) rollers secured to a common arbor (1) support a sprung balance. The wheels (6, 7) and the first roller (9) are provided with means allowing said first roller to receive direct impulses supplied alternately by the first and second wheels for the purpose of maintaining the oscillations of the balance. The second roller (11) is provided with means for driving a locking and rocking member arranged to lock said first and second wheels alternately.

Abstract: In the arrangement of this invention the position of the planets is displayed by means of a disc and rings concentric thereto, the display surfaces of which are arranged substantially in the same plane.

Abstract: A watch designed to display, by means of indicators (7 to 10) several astronomical magnitudes. The indicators are driven by means of a planetary gear train (19) which is rotatingly supported by means of a ball bearing (20) within a support ring (11) of the watch. The drive force as well as the time reference are provided by a work (C) simultaneously driving the planet-wheel carrier (21, 22) of the planetary gear train and the gear clusters mounted thereon. Each of said clusters has a reduction ratio depending on the indicator (8 to 10) it is intended to drive.