Constant-force device for indirect-second watches

Details Constant-force device for indirect-second watches Constant-force device for indirect-second watches

2006-02-14

2006-02-14

Hirshfeld, Andrew H. (Department: 2854)

Horology: time measuring systems or devices

Escapements

With oscillating or reciprocating means

C368S132000

Reexamination Certificate

active

06997602

ABSTRACT:
The present invention refers to a constant-force device suitable for being integrated into a movement of watches, particularly wrist watches, with an indirect-second mechanism having an intermediate second pinion (14) driven by a second wheel (9) of the movement, and an indirect-second wheel (15). The constant-force device comprises a tensioning module (4, 5, 6, 7, 8), a cam (2), a lever (11), and a stop wheel (13). The stop wheel (13) of the constant-force device is mounted on the intermediate second pinion (14) of the indirect-second mechanism.

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Richard Meis, “Eine Uhrmacherdynastie aus Dresden,” 1999, pp. 127-129, 235, and 166-168.

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