Brushing – scrubbing – and general cleaning – Machines – Brushing
Patent
1975-01-20
1976-10-05
Roberts, Edward L.
Brushing, scrubbing, and general cleaning
Machines
Brushing
A47L 1103, A47L 1118
Patent
active
039835928
ABSTRACT:
A rug shampooing machine, including means for producing dry foam from a liquid detergent source and for working such foam into a rug or carpet by means of a brush rotating on a horizontal axis; further comprising a vacuum nozzle, roller and squeegee means for picking up the dirty solution resulting from the scrubbing or shampooing action.
A foam generator mechanism is especially adapted to produce the aforesaid foam from the detergent source. This mechanism includes two rollers situated above the scrubbing brush, just below the outlet from the detergent source. The axes of the rollers are in a substantially horizontal plane and parallel to the surface to be cleaned. The rollers are of different diameters, the larger of the two being a foam plastic roller, which is driven by a belt connected to the scrubbing brush. The two rollers are continuously compressed together in order to create the desired foam.
A reverse-stroke brush lift-off mechanism is also incorporated in the rug-shampooing machine. The scrubbing brush, being in contact with the surface to be cleaned, is active in propelling the machine forwardly and is effective in working the foam detergent into the rug. However, on the return stroke, which is a natural stroke that the user would tend to indulge in because it has become a habit in the use of conventional vacuum cleaners, the rotation of the brush would act to interfere with easy return movement. Accordingly, as the user pulls the machine backwardly, the brush is lifted by means of a reaction principle involving very little force.
REFERENCES:
patent: 1576428 (1926-03-01), Hadwiger
patent: 2260207 (1941-10-01), Berg
patent: 2329563 (1943-09-01), Taylor
patent: 3072940 (1963-01-01), Kelly
patent: 3422579 (1969-01-01), Rogge et al.
General Signal Corporation
Killian George W.
Kleinman Milton E.
Ohlandt John
Roberts Edward L.
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