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Device for the fine adjustment of a balance spring

A technology of hairspring balance wheel and fine-tuning device, which is applied in the field of fine-tuning

Active Publication Date: 2006-01-25
格拉斯许特钟表有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Easier handling of this setup also eliminates the need for a live outrigger for positioning adjustments

Method used

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  • Device for the fine adjustment of a balance spring
  • Device for the fine adjustment of a balance spring
  • Device for the fine adjustment of a balance spring

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] figure 1 and Fig. 2 are top and bottom views respectively of a balance with spring according to a first embodiment of the invention, this (balance with hairspring) assembly must be fixed to the main plate of a mechanical watch movement (not shown). In this example, a balance 1 comprising two arms 1 a and 1 b in which balance screws 2 a and 2 b are screwed, the balance axel 3 of the balance pivots between a plate (not shown) and a balance half-cock 10 . Figure 2 shows, in a conventional manner, that balance 1 comprises a small disc 6a and a large disc 6b with disc pins 6c, and a collet 5 that allows the curvature at the center of hairspring 4 to be fixed to the balance shaft of balance 1 3 on.

[0018] More specifically refer to figure 1 , it can be seen that the balance half-bridge 10 supports a regulator needle 20 which frictionally fits on the top balance wheel end part 10a, and the tail part 20a of the regulator needle allows the regulator needle to resist the goo...

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PUM

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Abstract

The present invention provides a device for the fine adjustment of a balance spring. In order particularly to put a watch into beat and adjust the isochronism, in addition to the poising screws ( 2 a, 2 b) of the balance ( 1 ) and the fine adjusting screw ( 7 ) pressing on the index tail 20 a to alter the orientation of the index ( 20 ), the device includes, on the one hand, two screws ( 19, 29 ) respectively fixed in the balance cock ( 10 ) and in the index ( 20 ) to manoeuvre clamps by means of L-shaped rocking elements ( 13, 23 ) to fix the end of the balance spring and define its useful length, and on the other hand, a screw ( 9 ) for immobilising the index ( 20 ) in a determined position, these three screws ( 9, 19, 29 ) enabling a fine adjustment to be carried out.

Description

technical field [0001] The present invention relates to a fine-tuning device for a balance with hairspring that includes a specially arranged index assembly to make adjustment of isochronism easier and more reliable over a long period of time. The invention also relates to a method of fine-tuning, ie a sequence of operations from positioning the watch to final adjustment, the initial and final operations being possible with a single fine-tuning device thanks to the particular arrangement described. Background technique [0002] The regulator assembly consists, in a known manner, of a set of parts mounted on the balance-cock, namely a hairspring stud for securing the end of the outer curved part of the hairspring, and a friction fit on the top balance A regulator on the end piece consisting of an extension outside the balance half-cock for the pin and / or buckle and a regulator tail at the other end, usually a screw against a The restoring force of the spring acts on the tail...

Claims

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Application Information

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IPC IPC(8): G04B17/06G04B18/02
CPCG04B18/023
Inventor H-G·欣策M·施奈德
Owner 格拉斯许特钟表有限公司
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