Tool for mainspring removal

Details Tool for mainspring removal Tool for mainspring removal

1997-08-08

2000-11-21

Scherbel, David A.

Tools

Watchmakers'

81 75, 29227, G04D 300

Patent

active

061486930

ABSTRACT:
A tool improved over the prior art provides a means for easily and safely removing a timepiece mainspring from its barrel for cleaning and lubricating. A barrel holder is provided having a rim, and an essentially planar surface which includes openings therethrough. A mainspring barrel containing a mainspring is inserted into a mating opening. A barrel holder cap is snapped over a rim of the barrel holder. The cap surface includes openings opposite the barrel holder openings. The cap and barrel holder thereby form a receptacle for receiving an extracted mainspring. The watchmaker accesses a loop of the mainspring in the barrel holder, and removes the mainspring. The energy in the spring is thereby released and the expanding spring is captivated in the receptacle, permitting removal therefrom for cleaning and lubricating. In an improved version of the invention, a circular disc having a plurality of circular openings for receiving mainspring barrels of varying size. The disc is pivoted to place a desired size opening adjacent a chamber having an adjustable volume and access to the mainspring.

REFERENCES:
patent: 1361548 (1920-12-01), Rinn
patent: 2549325 (1951-04-01), Mongelli et al.
patent: 2571879 (1951-10-01), Hill et al.
patent: 3106115 (1963-10-01), Renz
patent: 5694689 (1997-12-01), Filipowers

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