Timesavers, Inc.

Eugene C David

Lee E Stump

Dale Boehne

An endless abrasive cross-belt surface treating apparatus which includes a platen assembly arranged to move in an oscillatory or epicyclic pattern relative to the work surface. The apparatus includes means for drivably oscillating the platen as well as a pair of laterally disposed belt guiding rolls positioned immediately adjacent the platen, with such oscillatory or epicyclic motion being continuously applied to the cross-belt while workpieces are being carried or conveyed through the machine.

Cross-belt sanding machine with oscillating platen means

A wood surface treatment system comprising a tandemly arranged endless abrasive cross-belt and flexible rotary abrading surface treating apparatus wherein the abrasive cross-belt portion of the system which includes a platen assembly arranged to move in an oscillatory or epicyclic pattern relative to the work surface and wherein the flexible rotary abrading portion of the apparatus includes a pair of angularly disposed rotary abraders, such as cylindrical brushes. The axis of each individual flexible rotary abrader is disposed at an acute angle, preferably 45 degrees, to the axis of the conveyor, with the individual axes being preferably disposed at 90 degrees, one to the other. The cross-belt portion of the apparatus preferably includes means for drivably oscillating the platen.

Wood surface treatment method and system employing tandemly oriented

An endless abrasive belt surface treating apparatus which includes a platen assembly arranged to move in an oscillatory or epicyclic pattern relative to the work surface. The apparatus includes a rotary eccentric crank or drive for drivably oscillating the platen as well as the belt guiding rolls adjacent the platen, with such oscillatory or epicyclic motion being continuously applied while workpieces are being carried through the machine.

Wide belt sanding machine with platen oscillating means

A sanding and polishing machine for individual workpieces having an infeed conveyor for carrying workpieces along a predetermined path through one or more tandemly arranged working stations for exposure to a series of endless abrasive belts. The abrasive belt contacts the workpiece under the influence of a multi-segmented platen, with each platen segment being arranged for adjustable positioning relative to the plane of the surface of the workpiece. Positioning of each individual platen segment is accomplished by virtue of the combination of a workpiece sensor together with an adjustable selected input supplementing the workpiece sensor so that one or more platen segments disposed adjacent to those segments actuated by the workpiece sensing units are also actuated, thus increasing the number of segments responding to the presence of workpieces in the working station and either symmetrically or asymmetrically enhancing the sensed width of the workpiece.

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New Hope, MN, United States of America

Eugene C David