Metal tools and implements – making – Saw-making or furbishing device or machine
Patent
1980-11-03
1983-08-16
Parker, Roscoe V.
Metal tools and implements, making
Saw-making or furbishing device or machine
76 40, 76 78R, B23D 6316
Patent
active
043984371
ABSTRACT:
An improved saw chain depth gauge grinder longitudinally positions the cutter links of saw chains with their depth gauges in a grinding position for grinding while preventing contact with other portions of the cutter link as they pass through the grinding position. A sprocket rotatably supports the saw chain beneath the grinding wheel. The grinding wheel is raised and lowered to a predetermined position to grind successive depth gauges to a uniform height as the saw chain circulates around the sprocket. One embodiment provides for a multiple-lobed camming member rotationally mounted on the sprocket for actuating a linkage to raise and lower the grinding wheel as the sprocket turns. Another embodiment provides for a pawl positioned adjacent the upper sprocket so as to provide a cutter link stop to position the depth gauge in the grinding position. The pawl also serves as a safety. As the sprocket is rotated to reposition the saw chain for grinding the depth gauge of the next link, the pawl is lifted by the next cutter link into the path of the grinding wheel so as to shield the cutter link.
REFERENCES:
patent: 2811874 (1957-11-01), Rethoret
patent: 3013448 (1961-12-01), Deck
patent: 3717051 (1973-02-01), Silvey
patent: 3779103 (1973-12-01), Silvey
patent: 3929049 (1975-12-01), Graversen
patent: 4104793 (1978-08-01), Simington
patent: 4120215 (1978-10-01), Kaye
patent: 4235131 (1980-11-01), Simington
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