Abrading – Machine – Combined
Patent
1997-07-15
1999-03-23
Rose, Robert A.
Abrading
Machine
Combined
451461, 15 931, B24B 718
Patent
active
058851399
ABSTRACT:
A power-operated and hand steerable machine for stripping linoleum, tile, mastic, grout, adhesive and the like from a floor and also for re-surfacing the floor after the stripping operation. The machine includes a support frame, a drive plate driven by a motor about a vertical rotational axis, a reversible work plate mounted under the drive plate and carrying cutter blocks with cutter inserts at one face and abrasive-carrying devices at the opposite face. Therefore, after a floor stripping operation by the cutter inserts, the work plate can be reversed and a floor re-surfacing operation be carried out by using the abrasive-carrying devices. A change speed system enables to drive the work plate at a higher speed during floor re-surfacing than during floor stripping. Longitudinally adjustable weights are carried by the support frame to adjustably bias the work plate against the floor. A vacuum cleaner unit is carried by the support frame and includes an air inlet mouth formed by a shroud carried by the support frame with the mouth in the rotational plane of the work plate. The change speed system includes a driving and a driven pulley and a belt selectively trained in complementary grooves of the two pulleys, the grooves being of different diameters. If the motor is an internal combustion engine, a belt tightening lever is provided; normally it is biased in belt tightening position but can be released by an actuating lever mounted on the handle and accessible to the machine operator.
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Bissonnette Claude
Lemieux Francois
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