Method of grinding concave raking surfaces of blade of circular

Details Method of grinding concave raking surfaces of blade of circular Method of grinding concave raking surfaces of blade of circular

1977-04-04

1978-03-14

Smith, Al Lawrence

Metal tools and implements, making

Blank or process

Saws

51288, B23D 6314, B24B 100

Patent

active

040784576

ABSTRACT:
The present novel inventive method of grinding the raking surfaces of a blade of a circular saw includes the steps of positioning a rotating frustoconical grinding element in two-directional movable relationship to a fixed plane of reference such as a work bench; positioning the major plane of the circular saw in a position which will permit a tangential approach of the frustoconical grinding element to the raking surfaces of the blade; moving the grinding element into abutment with the raking surface of one tooth of the circular saw; pressing the outer surface of said rotating grinding element against said raking surface; utilizing manual pressure in order to obtain a concave surface having a progression of change of radius in which the tangent angle of said change of radius is between two and ten degrees and abrading said raking surface so as to form a concave configuration therein having a graduated depth terminating at a maximum of 1/32 of an inch measured in relation to lateral, radially directed leading edges of said tooth, said maximum depth defined at the outermost end thereof.

REFERENCES:
patent: 192090 (1877-06-01), Spaulding
patent: 1771602 (1930-07-01), Armstrong
patent: 3362446 (1968-01-01), Potomak
patent: 3616711 (1971-11-01), Daggett
patent: 3766806 (1973-10-01), Benner
patent: 3964349 (1976-06-01), Von Arnauld

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