Balance wheel

Details Balance wheel Balance wheel

1975-04-14

1976-05-04

Jackmon, Edith Simmons

Electrical generator or motor structure

Dynamoelectric

Rotary

29177, 310 36, G04C 304, G04B 1700, H02K 3300

Patent

active

RE0287946

ABSTRACT:
A balance wheel for a horological instrument comprises a substantially annular rim having an enlarged counterweight portion and carrying a body (e.g., coil, magnet). The balance wheel is designed so that the body position is normally offset from the axis of the balance wheel in order that variations in body weight cause a related movement of the balance wheel about the axis. The rotation of the axially supported and initially unpoised balance wheel presents a portion of the counterweight to a stationary tool. The counterweight portion is of a predetermined configuration and the wheel is so designed that the tool removes sufficient material to poise the balance wheel.

REFERENCES:
patent: 3524118 (1970-08-01), Reich
patent: 3626691 (1971-12-01), Bonsack
patent: 3670492 (1972-06-01), Takamune

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