Cleaning and liquid contact with solids – Processes – Using solid work treating agents
Patent
1979-07-12
1981-08-25
Caroff, Marc L.
Cleaning and liquid contact with solids
Processes
Using solid work treating agents
15 55, B08B 104
Patent
active
042857376
ABSTRACT:
A method for clearing a railway roadbed of loose material employs elongate sweeper bristle elements, each element comprising a stem terminating in a knob portion which functions as a solid weighting mass and which forms a forward wearing surface. The method includes the steps of rotating a plurality of the sweeper bristle elements over the railway roadbed to be cleared so that the ends of the elements contact the loose material; imparting a centrifugal force on the stem and knob; and striking the loose material with the knob, thereby causing the loose material which contacts the knob to be driven away from the element.
The preferred sweeper bristle elements are each comprised of a solid elastomeric stem preferably made of 80 durometer rubber. The stem extends substantially the length of the element and has upper and lower portions. A solid weighting mass forming a forward wearing surface and preferably made from 60 durometer rubber is attached to the lower portion of the stem. The upper portion of the stem engages a rotating drum.
The rotation of the drum imparts a centrifugal force on the stem and the knob causing loose material which contacts the element to be driven away from the element.
REFERENCES:
patent: 3087179 (1963-04-01), Talboys
patent: 3137018 (1964-06-01), Seffker
patent: 3256545 (1966-06-01), Lewis et al.
patent: 3353200 (1967-11-01), Charvat
patent: 3391025 (1968-07-01), Foxx et al.
patent: 3402416 (1968-09-01), Shaw et al.
patent: 4144610 (1979-03-01), Moore et al.
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