Manufacture of rotatable ignition files or flint wheels

Details Manufacture of rotatable ignition files or flint wheels Manufacture of rotatable ignition files or flint wheels

1979-08-30

1981-09-22

Gilden, Leon

Metal deforming

With cutting

By composite tool

72340, 72356, B21D 3102

Patent

active

042902924

ABSTRACT:
Elongate wire stock of gauge appropriate to the desired diameter of a rotatable ignition file or flint wheel is cut into blanks of suitable size. A series of press operations is applied to the blanks by means of respective punches and dies to champfer or round off the peripheral edges of the blanks, to provide axial mounting holes, and to harden the respective surfaces of the blanks. The circumferential surfaces of the respective blanks are formed as friction surfaces.

REFERENCES:
patent: 3124876 (1964-03-01), Puetti
patent: 3186209 (1965-06-01), Friedman
patent: 3399560 (1968-09-01), Connolly
patent: 3413945 (1968-12-01), Bertoglio

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