Metal tools and implements – making – Saw-making or furbishing device or machine – Sharpening and gumming
Patent
1976-06-18
1977-08-30
Jones, Jr., James L.
Metal tools and implements, making
Saw-making or furbishing device or machine
Sharpening and gumming
76 25A, 76 74, B23B 6316
Patent
active
040446352
ABSTRACT:
A first mounting structure is provided and supported atop a support standard. The mounting structure has a motor driven rotary grinding wheel journaled therefrom and a second structure defining a support arm has one end thereof oscillatably supported from the mounting structure for swinging movement of the other end of the support arm about an axis generally paralleling but spaced from the axis of rotation of the grinding wheel. The other end of the support arm includes a mount for supporting a chain saw chain therefrom with a selected tooth of the chain in predetermined indexed position and the support arm is swingable into and out of positions with the selected indexed tooth properly engaged with the periphery of the grinding wheel for sharpening the tooth. The structure for oscillatably supporting the support arm from the mounting structure comprises an adjustable length pivot fastener of the shank type secured through aligned bores formed in overlapped portions of the mounting structure and the support arm and with thrust bearing washers disposed on the shank type pivot fastener between the overlapped portions. Further, the mount for supporting the saw chain from the free end of the support arm includes a cylindrical disc provided with a radially outwardly opening and circumferential groove with diametrically opposite portions of the groove being of different width and the disc being supported from the support arm for shifting between 180 degree angularly displaced positions whereby different width portions of the groove in the periphery of the disc may be used to accommodate saw chains having guide lugs of different thicknesses.
REFERENCES:
patent: 2833166 (1958-05-01), Wilson
patent: 3006222 (1961-10-01), McEwan
patent: 3013448 (1961-12-01), Deck
patent: 3071026 (1963-01-01), Dewitt
patent: 3349645 (1967-10-01), Silvey
patent: 3592085 (1971-07-01), Arneson
patent: 3880018 (1975-04-01), Simington
Godici Nicholas P.
Jacobson Harvey B.
Jones Jr. James L.
O#Brien Clarence A.
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