Method of making outer blades for electric shavers

Details Method of making outer blades for electric shavers Method of making outer blades for electric shavers

1976-03-29

1977-12-06

Whitehead, Harold D.

Metal tools and implements, making

Blank or process

Cutlery

B21K 1100

Patent

active

040610560

ABSTRACT:
A method of making outer blades for electric shavers wherein a metal sheet in which many hair inlet holes are made by punching or coining process is subjected to grinding process performed on the side at which the blade is to engage inner blade of the shaver and then to pressing process with a soft ram pressed against a rigid body on which the sheet is placed, so that any grinding fins remaining on peripheral edges of the respective holes will be thereby removed.

REFERENCES:
patent: 2168406 (1939-08-01), Harris
patent: 2223768 (1940-12-01), Martin
patent: 3216286 (1965-11-01), Heyek
patent: 3881373 (1975-05-01), Nakamura et al.

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