Method for the manufacturing of a metallic bushing for a bearing

Details Method for the manufacturing of a metallic bushing for a bearing Method for the manufacturing of a metallic bushing for a bearing

1978-12-18

1980-08-19

Truhe, J. V.

Horology: time measuring systems or devices

Staff and bearing details

29177, 291495R, 113116V, G04B 3100, B21D 5310

Patent

active

042177537

ABSTRACT:
A method of making a bushing and a bushing made thereby for use as the bearing of a timepiece or the like, in which a sheet of metal is stamped to form a cambered disc, a central passageway is formed in the cambered disc by stamping in a direction from the concave to the convex surface of the disc so that any burr formed will be on the convex surface, and tumbling the cambered disc in a polishing drum to remove the burr. The disc so made is adapted to accept in the central passageway and in a direction from the concave to the convex surface a rotating shaft to be journalled therein so that any burr remaining at the convex surface is folded away from the central passageway when the shaft is engaged therein.

REFERENCES:
patent: 2924914 (1960-02-01), Garwood
patent: 2956394 (1960-10-01), Dubois
patent: 3146748 (1964-09-01), Knocke
patent: 3438109 (1969-04-01), Erard

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