Apparatus for sharpening circular saw teeth

Details Apparatus for sharpening circular saw teeth Apparatus for sharpening circular saw teeth

1997-01-17

1998-06-02

Rose, Robert A.

Abrading

Machine

Rotary reciprocating tool

451403, 76 77, 76 48, 76 42, B24B 346

Patent

active

057590923

ABSTRACT:
An apparatus for sharpening the teeth of a circular saw comprises a rocking arm with a pawl to engage and actuate the teeth of an indexing ratchet wheel which is mounted coaxially with the circular saw for synchronous clockwise indexing, and a grinding wheel capable of intermittently moving forward to contact and grind the saw teeth. A cam mechanism controls the rocking arm so that the land of each saw tooth first contacts the grinding wheel when the grinding wheel moves forward, prior to the contacting of the root and the cutting edge thereof with the grinding wheel when the grinding wheel is about to reach its frontmost position. The saw tooth starts to stop temporarily for a short time when the grinding wheel is about to contact the root and the cutting edge. The problems of damages caused by impacts and/or excessive contact pressure are therefore alleviated.

REFERENCES:
patent: 315175 (1885-04-01), Bush, Jr.
patent: 755319 (1904-03-01), Schofield
patent: 881231 (1908-03-01), Filstrup
patent: 2885912 (1959-05-01), Alber
patent: 4040313 (1977-08-01), Lustgraaf
patent: 5257563 (1993-11-01), Hutchinson

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