Method and apparatus for forming a helical cutter strip for a dr

Details Method and apparatus for forming a helical cutter strip for a dr Method and apparatus for forming a helical cutter strip for a dr

1975-11-25

1977-08-30

Smith, Al Lawrence

Metal tools and implements, making

Blank or process

Cutlery

72167, B21K 1100, B21D 1108

Patent

active

040446360

ABSTRACT:
The cutter strip of a dry shaver assembly is formed into a helical configuration by edgewise passage thereof between three rollers which are mounted for rotation about parallel axes and which comprise a main roller and a pair of auxiliary rollers, with the auxiliary rollers having a smaller diameter than the main roller. The cutter strip which is passed between the circumferences of the rollers is formed with undulations extending lengthwise of the strip and the two auxiliary rollers have circumferential slots formed with a width sufficiently large to accommodate the undulations of the strip. The circumferential slots in the auxiliary rollers are offset axially of the rollers to a degree commensurate with the helical pattern which is to be formed.

REFERENCES:
patent: 3927581 (1975-12-01), Kolodziej

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