Mining or in situ disintegration of hard material – Hard material disintegrating machines – Floor-working
Patent
1974-07-09
1976-07-27
Purser, Ernest R.
Mining or in situ disintegration of hard material
Hard material disintegrating machines
Floor-working
51176, 280639, E01C 2309
Patent
active
039715949
ABSTRACT:
An apparatus for milling road surfaces, the apparatus including an elongated milling roller having hard metal cutters and being adapted to be driven around its central horizontal axis. A pair of end supports extend across opposed ends of the roller normal to the axis thereof, these end supports having projections which extend forwardly of the roller. A pair of swivel arms are pivotally connected respectively to these projections for swivelling movement about parallel vertical axes, respectively, and a pair of road-engaging wheels are respectively connected with the swivel arms for swivelling movement therewith by way of a structure capable of adjusting the elevation of the wheels as well as capable of adjusting the orientation thereof, the swivel arms providing for the wheels any one of three positions, namely positions in front of the roller, between the projections of the end supports of the roller, positions respectively extending forwardly of the end supports, and positions respectively situated laterally beyond the supports, with the rollers being capable of orientation so that their axes are parallel to the milling roll axis irrespective of the position of the swivel arms. Suitable releasable locks are provided both for locking the swivel arms in the selected positions thereof as well as for locking the rollers in their oriented positions.
REFERENCES:
patent: 2311891 (1943-02-01), Tyson
patent: 2961251 (1960-11-01), Roberton
patent: 3336623 (1967-08-01), Coates et al.
patent: 3347596 (1967-10-01), Brejcha et al.
patent: 3511394 (1970-05-01), Cox
patent: 3608969 (1971-09-01), Fowkes
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