Brushing – scrubbing – and general cleaning – Implements – Brush or broom
Patent
1993-04-19
1995-01-24
Scherbel, David A.
Brushing, scrubbing, and general cleaning
Implements
Brush or broom
15179, 15200, 151911, 451465, A46B 1302
Patent
active
053832450
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention concerns a device in cassettes for spring members for a machine, e.g., a sweeping machine, which in one embodiment can be used i.a. for removing of rubber rests, snow and ice from runways for aircraft, in which spring members are manufactured of steel, and which in another embodiment can be proposed for removing snow from railway tracks and switches, in which the spring members are manufactured of plastic. Thus the device is usable for sweeping machines for several different purposes. The cassettes are arranged around the periphery of a rotatable roller and extend mainly in the longitudinal direction of the roller and includes units of spring members, as radially extending bristles, whose ends are brought in contact with the ground, e.g. a runway, by the rotation of the roller. Each cassette includes an elongated bar which is arranged in facing grooves in brackets which extend along the length of the roller.
BACKGROUND TECHNICS
A great number of solutions are known for the fastening of cassettes for bristle bunches arranged around the periphery of a bristle roller, which in turn is rotatably mounted on a sweeping machine or the like. Swedish patent publication SE-B-421 331 describes a bristle roller which provides elongated cassettes in which bunches of bristles are arranged in openings along the length of each cassette. Each cassette is accommodated in grooves extending along the length of the bristle roller and is constituted by two facing U-shaped sheet profiles, which provide facing openings in which bristle bunches are arranged with radially projecting bristles. The sheet profile in the cassette by its weight constitutes a disadvantage as the cassette is exposed to large mass forces with rotation of the bristle roller.
Another embodiment of a bristle roller is disclosed in U.S. Pat. No. 4,538,319. A cassette similar to the one which is described in the patent publication SE-B-421 331 is arranged between brackets which in turn are attached to an elongated roller. The brackets provide grooves for sliding bars, which in turn provide sliding grooves in which the cassettes are accommodated. The sheet profiles in the cassette also are disadvantageous as their weight makes them awkward and give rise to run desirable mass forces with rotation of the bristle roller. The present invention i.a. constitutes an improvement of the device according to U.S. Pat. No. 4,538,319 and is described below.
SUMMARY OF THE INVENTION
The purpose of the present invention is to provide a device according to the preamble above which constitutes an improvement in a cassette for spring members which is possible to use with a bristle roller similar to the one described in the U.S. Pat. No. 4,538,319. The device includes a rotatable roller carrying brackets for the cassettes including units of spring members. Each cassette includes an elongated bar which is arranged in facing grooves in the brackets extending along the length of the roller.
The invention is characterized in that passages for e.g. removed material, other dusts and water are arranged between each groove and the bar extending in the grooves. In a special embodiment of the invention the passages are constituted by a continuous gap or one or more parts of gaps extending along adjacent surfaces on each groove and bar in the cassettes.
By the arrangement of gaps mentioned above a self-cleaning of the rotor with cassettes for spring members has been achieved, at which a clogging by debris or the like between the roller and the underside of the cassette is avoided as between the bar and the grooves in which it is extending. By the arrangement of a gap in this way the work with exchangement of the cassettes is facilitated, e.g., after the spring members in the same have been worn out. As the device, which is described in U.S. Pat. No. 4,538,319, the brackets for the cassettes preferably are provided with sliding bars, providing grooves in which the cassettes are accommodated. In the device according to present invention each cassett
REFERENCES:
patent: 2721348 (1955-10-01), Baydenburgh
patent: 2734212 (1956-02-01), Koch
patent: 3241172 (1966-03-01), Tilgner
patent: 4302863 (1981-12-01), Droeser
patent: 4485514 (1984-12-01), Droeser
patent: 4498210 (1985-02-01), Drumm
patent: 4538319 (1985-09-01), Droeser
Chin Randall E.
Filippa i. Vasteras Handelsbolag
Scherbel David A.
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