Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1989-05-31
1992-08-25
Rachuba, M.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
51237T, 51328, 51135R, B24B 2100
Patent
active
051407752
ABSTRACT:
A belt grinding assembly for grinding a smoothly radiused edge surface on an elongate bar such as a wrench. A bar manipulating mechanism moves the edge surface of the bar at a uniform rate of speed along an arcuate path about an axis at a right angle to a first direction in which an abrasive belt is driven into forceful engagement with the abrasive belt as it is driven along a support surface. The bar manipulating mechanism includes a wheel rotated at a uniform speed about an axis at a right angle to the first direction to sequentially move the periphery of the wheel past a loading station and then past the support surface; a clamp including jaws mounted on the wheel for relative movement between a release position with the jaws spaced to freely receive a bar, and an engage position adapted to firmly clamp the bar between the jaws; and jaw actuating structure that moves the jaws from a release position at the loading station, and positions the jaws in the engage position during movement of the clamp assembly past the support surface.
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Keller Bradley W.
Luedeke Arthur P.
STeinback Clarence I.
Griswold Gary L.
Hohenshell Jeffrey J.
Kirn Walter N.
Minnesota Mining and Manufacturing Company
Rachuba M.
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