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Device for the fine adjustment of a balance spring

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

Inactive Publication Date: 2009-02-18
GLASH&XFC TTER UHRENBETRIEB
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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 invention relates to a device for fine adjustment of a balance wheel / hairspring. In order to adjust isochronism or make the watch vibrate, in addition to the balance screws (2a, 2b) of the balance wheel (1) and the fine-tuning screw (7) placed on the tail (20a) of the speed needle (20a) to change the position of the speed needle (20) , the device also includes: (i) two screws (19, 29) fixed in the balance half plate (10) and the speed needle (20) respectively, so as to use the L-shaped swing element (13, 23) to operate the claw , thereby fixing the end of the hairspring and defining its working length; and (ii) a screw (9) that can be used to fix the speed needle (20) in a predetermined position, the three screws (9, 19, 29) enabling fine adjustments .

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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Patent Type & Authority Patents(China)
IPC IPC(8): G04B17/06G04B18/02
CPCG04B18/023
Inventor H-G·欣策M·施奈德
Owner GLASH&XFC TTER UHRENBETRIEB