A timepiece having multiple springs while reducing the plane size of the movement. The timepiece has a first barrel including a first barrel arbor, a first spring, and a first barrel wheel; and a second barrel including a second barrel arbor, a second spring, and a second barrel wheel, disposed to a position not superimposed with the first barrel in a plan view from the axial direction of the first barrel arbor and the second barrel arbor, and having rotation of the first barrel transferred thereto; a planetary gear mechanism having a display pivot that turns in a first direction when rotation of the first ratchet wheel that turns in unison with the first barrel arbor is transferred, and turns in a second direction opposite the first direction when rotation of the second barrel wheel is transferred, and is disposed to a position not superimposed with the first barrel and the second barrel in plan view; and a power reserve wheel train including multiple wheels that transfer rotation of the first ratchet wheel to the planetary gear mechanism, and having one of the multiple wheels axially supported by the second barrel arbor.

A timepiece having multiple springs while reducing the plane size of the movement. The timepiece has a first barrel including a first barrel arbor, a first spring, and a first barrel wheel; and a second barrel including a second barrel arbor, a second spring, and a second barrel wheel, disposed to a position not superimposed with the first barrel in a plan view from the axial direction of the first barrel arbor and the second barrel arbor, and having rotation of the first barrel transferred thereto; a planetary gear mechanism having a display pivot that turns in a first direction when rotation of the first ratchet wheel that turns in unison with the first barrel arbor is transferred, and turns in a second direction opposite the first direction when rotation of the second barrel wheel is transferred, and is disposed to a position not superimposed with the first barrel and the second barrel in plan view; and a power reserve wheel train including multiple wheels that transfer rotation of the first ratchet wheel to the planetary gear mechanism, and having one of the multiple wheels axially supported by the second barrel arbor.

The method of manufacturing a timepiece shaft (1) includes grinding a ceramic piece, especially to form a balance shaft (1), having a functional portion (2a; 2b) including at least one part (221a; 221b) of a pivot-shank (22a; 22b) and/or at least one part (211a; 211b) of a pivot (21a; 21b), the first functional portion being made of ceramic and a first outer diameter (D1) of the first functional portion being less than 0.5 mm, or less than 0.4 mm, or less than 0.2 mm, or less than 0.1 mm.

A brake spring intended to apply a radial force against a supporting arbor of a display of a watch, including an elastic strip, an elastic casing organ adapted to be fastened to an attachment organ of a structure of a horological movement, and a retaining element of the elastic strip configured to cooperate with the elastic strip, so as to hold it in a first position, the elastic strip being capable of being released from the retaining element so as to occupy a second position under the effect of an elastic return force, wherein it is capable of applying a resulting radial force against the arbor.

A brake spring intended to apply a radial force against a supporting arbor of a display of a watch, including an elastic strip, an elastic casing organ adapted to be fastened to an attachment organ of a structure of a horological movement, and a retaining element of the elastic strip configured to cooperate with the elastic strip, so as to hold it in a first position, the elastic strip being capable of being released from the retaining element so as to occupy a second position under the effect of an elastic return force, wherein it is capable of applying a resulting radial force against the arbor.

A horological mechanism including a barrel drum mounted pivotally free around a barrel shaft, a barrel spring being housed inside the barrel drum, this barrel spring including a first external coil wherein it is attached to the barrel drum, and a last internal coil, the barrel spring being attached to the barrel shaft, the winding of the barrel spring being done by a winding rod which meshes with the barrel drum, a barrel ratchet being fixedly mounted on the barrel shaft, the horological mechanism also including a finishing geartrain which includes a first finishing wheel with which the barrel ratchet meshes and which transmits a driving force from the barrel drum to an escapement mobile the purpose of which is to maintain the oscillations of a regulating member which, by its oscillations, regulates the rate of the horological mechanism.

A horological mechanism including a barrel drum mounted pivotally free around a barrel shaft, a barrel spring being housed inside the barrel drum, this barrel spring including a first external coil wherein it is attached to the barrel drum, and a last internal coil, the barrel spring being attached to the barrel shaft, the winding of the barrel spring being done by a winding rod which meshes with the barrel drum, a barrel ratchet being fixedly mounted on the barrel shaft, the horological mechanism also including a finishing geartrain which includes a first finishing wheel with which the barrel ratchet meshes and which transmits a driving force from the barrel drum to an escapement mobile the purpose of which is to maintain the oscillations of a regulating member which, by its oscillations, regulates the rate of the horological mechanism.

Provided is a timepiece that improves the ease of unwinding a spring. The timepiece has a bridge disposed between the rotor and the main plate when seen in a side view; a pawl lever that is disposed between the rotor and bridge in side view, moves bidirectionally in a direction toward and a direction away from the transmission wheel in conjunction with the rotor, and causes the transmission wheel to turn in one direction; a release mechanism that is disposed to the bridge, and can change between an engaged state in which the pawl lever and the transmission wheel are engaged, and a released state in which the pawl lever and the transmission wheel are not engaged; and a train bridge disposed in side view between the pawl lever and the rotor, and having a first hole disposed to a position superimposed with the release mechanism when seen in a plan view.

Provided is a timepiece that improves the ease of unwinding a spring. The timepiece has a bridge disposed between the rotor and the main plate when seen in a side view; a pawl lever that is disposed between the rotor and bridge in side view, moves bidirectionally in a direction toward and a direction away from the transmission wheel in conjunction with the rotor, and causes the transmission wheel to turn in one direction; a release mechanism that is disposed to the bridge, and can change between an engaged state in which the pawl lever and the transmission wheel are engaged, and a released state in which the pawl lever and the transmission wheel are not engaged; and a train bridge disposed in side view between the pawl lever and the rotor, and having a first hole disposed to a position superimposed with the release mechanism when seen in a plan view.

A barrel (1) for self-winding timepiece including a drum (11) provided with an inner lateral wall (12) and a mainspring (2) forming a winding including an outer coil (21) the end (22) of which is friction coupled with the inner lateral wall and free to slip against the inner lateral wall in the event of overtension of the mainspring (2). The end of the outer coil includes an external face (23) having two friction surfaces (24, 25) disposed in the top and bottom portion of the outer coil and arranged to be in contact with the inner lateral wall in such a way that the portion between the friction surfaces, referred to as central portion (26), is not in contact with the inner lateral wall, the central portion forming a reservoir (27) for a lubricant between the two friction surfaces.