Metal tools and implements – making – Saw-making or furbishing device or machine
Patent
1983-10-21
1985-06-11
Parker, Roscoe V.
Metal tools and implements, making
Saw-making or furbishing device or machine
76 42, B23D 6316
Patent
active
045220875
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 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. The bottom surface of the shield plate is sloped upwardly in a direction rearwardly from the top cutting edge of the cutter tooth, and the carrier is provided with an adjustable chain stop to dispose the cutter link at an angle to the shield plate and thereby provide for an automatic increase in depth gauge clearance as the length of the cutter tooth decreases. The shield plate can also be sloped laterally to cause the depth gauges on the right-hand cutter links to be ground to a different clearance than those on the left-hand cutter links, if desired. 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.
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
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