Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1981-04-30
1983-09-13
Smith, James G.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
51148, 474123, 474126, 474136, B24B 2100, B24B 2118
Patent
active
044034547
ABSTRACT:
A stationary or bench mounted belt sander is described constructed of a die cast bed or frame rotatably supporting a drive roll or pulley at one end thereof and provided at the other end portion thereof with generally longitudinal ways for slidably supporting a pair of generally parallel spaced apart outwardly extending generally elongated U-shaped stamped metal yoke or support bracket members provided at their inner or proximal end portions with camming surfaces. The distal ends of the yokes carry pins generally perpendicular thereto supporting a shaft for an idler roll or pulley. The bed or frame is also provided with transverse ways carrying ramp elements engaging the camming surfaces of the yokes, with the ramp elements being provided with transversely outwardly extending screws for cooperation with a nut or internally threaded knob members to pull the ramp members transversely outwardly to thereby cam the yokes longitudinally outwardly for tensioning and tracking adjustment of a sanding belt passed about the drive and idler pulleys. An extension spring spans the bed between the ramp members and the bed, between the pulleys defines a platen. Locking means may also be provided for locking the yokes positively in position.
REFERENCES:
patent: 419073 (1890-01-01), Richards
patent: 621474 (1899-03-01), Meissner
patent: 704388 (1902-07-01), Schwingel
patent: 2740238 (1956-04-01), Sharpless
patent: 3359689 (1967-12-01), McCarty et al.
patent: 3538650 (1970-11-01), Pollak
Glore Thomas G.
Koon Randy G.
Adolphson K. Bradford
Bell Edward L.
Schmidt Edward P.
Smith James G.
Smith Robert E.
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