Switch for resetting an analog clock hour hand

Horology: time measuring systems or devices – Plural time zones – With manually actuated display

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Details

268 80, 268185, G04B 1922, G04B 1904, G04B 1800

Patent

active

056361840

ABSTRACT:
The timepiece has a gear housing containing a horometric movement and a minute hand gear 12 operatively connected to the movement. Also, the timepiece comprises a drive gear 2 operatively connected to the movement, a cylinder gear 4 engaging the drive gear 2 by crown teeth 24 disposed on both gears 2 and 4, a leaf spring 6 biasing the cylinder gear 4 against the drive gear 2, a rod 8 and a sliding switch 10 pivotally disposed on the rod 8. The sliding switch 10 has a switch tooth 68 that removably engages the cylinder gear 4, forcing the crown teeth 24 to slide into an adjacent position which independently moves an hour hand 54. Other embodiments employ a spindle switch 78 and a pop-up switch 88.

REFERENCES:
patent: 2461599 (1949-02-01), Graef
patent: 2777281 (1957-01-01), Berry
patent: 3407591 (1968-10-01), McMahill
patent: 3695035 (1972-10-01), Cleusix
patent: 4254493 (1981-03-01), Billet
patent: 4415272 (1983-11-01), Heinzelmann
patent: 4422777 (1983-12-01), Nakamura
patent: 4956826 (1990-09-01), Coyman et al.
patent: 5210721 (1993-05-01), Kikuchi
patent: 5285427 (1994-02-01), Vaucher
patent: 5383165 (1995-01-01), Vaucher

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