Adjustment member for watches
AssigneeMontres Breguet S.A.
InventorsMarc Stranczl, Polychronis Nakis Karapatis
Life of this patent
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Abstract
An adjustment member for a watch including a fixed structure extending substantially perpendicularly to an axial direction, the adjustment member including a regulating member with a balance arranged to pivot about a balance axis, this balance is pivoted by magnetic pivots in a carriage, arranged to pivot about a carriage axis, and comprised in a device for annulling variations in rate in the vertical positions, formed by a tourbillon or a carrousel, comprised in the adjustment member, and the carriage carrying magnets defining the balance axis which is perpendicular or oblique to the carriage axis.
Claims7
An adjustment member for a watch comprising a fixed structure extending substantially perpendicularly to an axial direction, said adjustment member comprising:
- a regulating member with a balance arranged to pivot about a balance axis, wherein said balance is pivoted by magnetic pivots positioned in hubs of a carriage, arranged to pivot about a carriage axis, and comprised in a device for annulling variations of rate in the vertical positions, formed by a tourbillon or a carrousel, comprised in said adjustment member, said carriage being an outer most carriage of the tourbillon or the carrousel and configured to be directly attached to the fixed structure, and said carriage carrying magnets defining said balance axis, said balance axis being perpendicular with respect to said carriage axis,
- wherein said balance is pivoted by said magnetic pivots in said carriage, whose carriage axis is parallel or substantially parallel to said axial direction.
A method for optimising chronometric properties of a mechanical watch comprising a fixed structure extending substantially perpendicularly to an axial direction, and comprising an adjustment member comprising a regulating member with a balance arranged to pivot about a balance axis, the method comprising:
- defining target rate values in at least each of six standard timing positions, the six standard timing positions including vertical pendant down, vertical pendant up, vertical pendant right, vertical pendant left, horizontal dial up, and horizontal dial down;
- measuring the chronometric properties of said watch at least in the six standard positions;
- modifying said adjustment member to give said balance axis an oblique or perpendicular orientation with respect to said axial direction;
- measuring again the chronometric properties of said watch at least in the six standard positions, and the measured rate values are compared to said target values;
- and
- ceasing the modifying said adjustment member as soon as the measured rate values are less than said target values,
- wherein, when, after said measuring again, said measured rate values are greater than said target values, said adjustment member is modified again, by replacing the pivots of said balance with magnetic pivots, and by placing said balance inside a carriage arranged to pivot about a carriage axis, and comprised in a device for annulling variations of rate in the vertical positions, formed by a tourbillon or carrousel, which is incorporated in said adjustment member, said carriage being an outer most carriage of the tourbillon or the carrousel and configured to be directly attached to the fixed structure, and said carriage including hubs that carry magnets defining said balance axis, said balance axis being perpendicular or oblique with respect to said carriage axis,
- wherein said balance is pivoted by said magnetic pivots in said carriage, whose carriage axis is parallel or substantially parallel to said axial direction.
Dependencies are inferred from the claim text.