Metal tools and implements – making – Saw-making or furbishing device or machine
Patent
1985-06-07
1987-02-17
Parker, Roscoe V.
Metal tools and implements, making
Saw-making or furbishing device or machine
76 42, B23D 6316
Patent
active
046430504
ABSTRACT:
A machine for grinding the depth gauges of saw chain cutter links includes a saw chain carrier mounted for movement toward and away from a power grinding element. As the carrier moves a cutter link toward the grinding element, the cutter tooth of such link moves beneath indexing structure which includes a shield plate which then moves with the carrier toward the grinding element. Upon continued movement, the shield plate contacts an indexing roller which forces the plate down against the top of the tooth. After the plate bottoms against the tooth, the plate forces the indexing roller upwardly. The roller, being linked to the grinding element, lifts the grinding element to its grinding position for grinding the depth gauge of such link. An alternative embodiment includes a brake activated by the carrier to hold the grinding element in its grinding position after the cutter tooth passes beneath the indexing roller. In another embodiment of the invention, indexing structure includes a slide plate having a hook portion engageable with a side cutting edge of a cutter tooth and associated with ramps which provide selected levels of grinding without contacting the top cutting edge of the tooth. A further embodiment uses a slide plate associated with levers to position the level of grinding also without contacting the top cutting edge of the tooth.
REFERENCES:
patent: 3717051 (1973-02-01), Silvey
patent: 3796113 (1974-03-01), Granberg
patent: 4002089 (1977-01-01), Granberg
patent: 4267751 (1981-05-01), Ziegelmeyer
patent: 4522087 (1985-06-01), Silvey
Eckelman Eugene M.
Parker Roscoe V.
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