Method and apparatus for determining the sharpness of a saw chai

Details Method and apparatus for determining the sharpness of a saw chai Method and apparatus for determining the sharpness of a saw chai

1980-07-07

1982-05-25

Gill, James J.

Measuring and testing

Surface and cutting edge testing

73432PS, G01N 1500

Patent

active

043310281

ABSTRACT:
A rectangular container for a saw chain is provided with a transparent plastic lid and a foraminous bottom. Freshly sawn wood chips are placed in the container after which a movable slide is located adjacent the level of the chips. After shaking of the container, a predetermined reduction in chip level as measured by the slide will indicate that the saw chain requires servicing.

REFERENCES:
patent: 789517 (1905-05-01), Williamson
patent: 2987670 (1961-06-01), Derby et al.
patent: 3729096 (1973-04-01), Fitzner et al.

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