Metal tools and implements – making – Saw-making or furbishing device or machine – Chain saw sharpener
Patent
1998-08-18
2000-05-09
Watts, Douglas D.
Metal tools and implements, making
Saw-making or furbishing device or machine
Chain saw sharpener
B23D 6316
Patent
active
060588063
ABSTRACT:
An automatic chain saw sharpener includes a housing enclosing a sharpening device for sharpening a saw chain, an incrementing device assembly for incrementing the saw chain, and a timing device for operating the sharpening device until the entire saw chain has been sharpened automatically, without constant user intervention. The chain saw is supported by a bar guide and a pair of adjustable bar stabilizer clamps, and adjustment screws adjust the vertical height of a support plate supporting the sharpening device and the incrementing assembly. At initial operator set-up, a pair of friction wheels in the incrementing device are tightened down against the side surfaces of the saw chain links to increment the chain around the saw bar. After the operating cycle begins, a pair of contact sensors sense the presence and orientation of the cutting teeth along the chain. When a cutting tooth is sensed, the movement of the chain is stopped, and the sharpening device pivots to a correct sharpening orientation depending upon the angle of the tooth. The sharpening device then pivots into contact with the cutting surface of the tooth and is operated until an appropriate hone on the cutting edge of the tooth is obtained. The sharpening device is then pivoted away from the cutting tooth, and the chain is incremented until a contact sensor senses a subsequent cutting tooth, where the process is repeated. The timing device is connected to an indicator light to provide the user with a visual indication that the sharpening cycle is complete.
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patent: 5156071 (1992-10-01), Stevens
Hunter Christopher H.
Watts Douglas D.
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