Regulator for a timepiece movement
AssigneeA. Schild S.A.
InventorsGerald Visconti, Beat Gilomen
Life of this patent
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Abstract
A regulator comprising two limiting members in the form of a blanked and bent tongue of a lug and of a detachable part serving as a pin or key, respectively. Part of the side surface of the tongue bent at a 90.degree. angle projects to form a banking. The detachable limiting member, which can be rotatingly adjusted about its axis, is fitted in the entrance opening of a cut-out portion and includes a projecting edge constituting the other banking. The two bankings are visible from above between the side surface of the bent tongue and the entrance opening of the cut-out portion so that the regulation of the beat of the balance-spring can be checked under a microscope.
Claims8
In a regulator for adjusting the active length of a balance-spring in a timepiece movement, of the type having an annular portion to be fitted on said movement coaxially with said balance-spring, a lug having a cut-out portion and an opening into said cut-out portion, and a first limiting member fitted in said cut-out portion and held rotatably adjustable about an axis parallel to the axis of rotation of said regulator, the improvement which comprises:
- a second limiting member disposed opposite said first limiting member and formed by an integral lateral portion of said lug bent in a rounded bend, about a line running towards said opening, into a plane parallel to the axis of rotation of said regulator, and
- at least two straight, parallel, projecting banking elements respectively forming part of said first and said second limiting member, said banking elements being visible between said opening and said rounded bend when viewed at right angles in the dial-down position of said movement.
Dependencies are inferred from the claim text.