Brushing – scrubbing – and general cleaning – Machines – Brushing
Patent
1992-12-14
1994-03-22
Roberts, Edward L.
Brushing, scrubbing, and general cleaning
Machines
Brushing
153404, E01H 104
Patent
active
052952770
ABSTRACT:
A convertible sweeper has a main rotating cylindrical brush and a second rotatable cylindrical tool. The second tool is movable between a first position in front of the main brush where it rotates to assist in very effectively loading debris comprised mainly of dry leaves, paper, etc. into the hopper, and a second position in the upper part of the hopper entrance. There it may be held stationary when the debris to be swept is mainly sand, which is very efficiently swept by the main brush alone, or it may be rotated if the debris also includes some light material, because such rotation assists to a degree in loading that material.
REFERENCES:
patent: 884421 (1908-04-01), Ruff
patent: 959380 (1910-05-01), Otis
patent: 4569096 (1986-02-01), Kassai
patent: 4624026 (1986-11-01), Olson et al.
Basham Michael T.
Koenigs Philip E.
Roberts Edward L.
Tennant Company
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