Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Patent
1975-05-19
1976-06-01
Feldman, Peter
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
15354, 15405, A47L 514
Patent
active
039598462
ABSTRACT:
The improvement in a rotary vacuum or suction sweeper of the type wherein vacuum of suction is created underneath the carriage body of a wheeled vehicle by the driven rotation of blower impeller means, within a blower housing comprising a part of the carriage body. Thereby as the sweeper is moved over an area to be cleaned by an operator pushing or pulling a handle extending angularly upwardly from the vehicle in the manner in which one pushes a rotary lawn mower, dirt and debris are sucked up below the carriage body and delivered into a catch bag disposed over duct means extending rearwardly from the rotor impeller housing. With the present invention, a plate valve is interposed in such duct means, which valve, when closed, diverts the air flow from its normal path back into the catch bag, to a forwardly facing duct to which is attached a hoselike element having an open discharge end. Articulated control means are provided to extend downwardly and adjacent the machine operating handle. Such control means may be manipulated by the operator as he is pushing the machine by means of the handle, first close the plate valve, and then, after such closing has been accomplished, to direct the open end of the hose over a predetermined angle both forward and laterally of the vehicle carriage body. Thereby, not only may any dirt and/or debris which are picked up by the suction under the carriage body be blown into certain areas adjacent the sweeper, such as flower beds, gutters, drainage ditches, etc., but through the air stream passing out of the hose nozzle, dirt and/or debris ahead or adjacent the path of the machine may be similarly blown without having to be picked up underneath the machine carriage body.
REFERENCES:
patent: 1193475 (1916-08-01), Smith
patent: 3491399 (1970-01-01), Dolan et al.
patent: 3618157 (1971-11-01), Bassin
patent: 3863291 (1975-02-01), Woelffer
patent: 3867773 (1975-02-01), Gunderson
Feldman Peter
Moore C. K.
Pavitt, Jr. William H.
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