Compass-watch case

Details Compass-watch case Compass-watch case

1986-06-30

1987-10-27

Miska, Vit W.

Horology: time measuring systems or devices

Combined with disparate device

368 14, 368278, 33355R, G04B 4700

Patent

active

047026120

ABSTRACT:
The compass is composed of a glass plate constituting a transparent outer component and of a thin plate constituting an inner transparent component. Two bearings are fixed in holes in these plates, one bearing being situated near the upper face and covered by a disk. An arbor can thus be machined with a maximum length and can support the compass needle with the greatest possible precision. The compass unit, comprising a setting ring which holds the two plates in place, may be driven with a gasket into the radial wall of the case body in lieu of the usual watch glass.

REFERENCES:
patent: 1217937 (1917-03-01), Greene
patent: 1435633 (1922-11-01), Eisenmann
patent: 1560482 (1925-07-01), Nolsom
patent: 2108263 (1938-02-01), L'aubee-Lund
patent: 2541432 (1951-02-01), Muehlbauer
patent: 2857734 (1958-10-01), Weigenant

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