Operating mechanism for mechanical watch movement

Details Operating mechanism for mechanical watch movement Operating mechanism for mechanical watch movement

1977-03-11

1978-09-12

Witkowski, Stanley J.

58 58, 58 59, 58 63, 58 73, G04B 1924, G04B 2702

Patent

active

041126734

ABSTRACT:
A watch movement is disclosed which is capable of being equipped either with or without a calendar mechanism without the need for structural modification of the movement. The setting lever spring of the unit is formed by a linear arm of the guard plate and provided with a head having a front and rear edge each with two opposite ramps arranged to cooperate with a pin to fix the spring in a different position depending on whether or not the movement is to be equipped with a calendar mechanism.

REFERENCES:
patent: 3664119 (1972-05-01), Besson

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