Mining or in situ disintegration of hard material – Automatic control; signaling or indicating – Of hard material disintegrating machine
Patent
1979-08-14
1981-06-02
Purser, Ernest R.
Mining or in situ disintegration of hard material
Automatic control; signaling or indicating
Of hard material disintegrating machine
180 648, 404 84, 299 39, E01C 2312
Patent
active
042708010
ABSTRACT:
A wheeled roadway planing machine in which the wheels are pivotable by individual hydraulic rams for steering purposes. Each ram is controlled by a rotary, blocked-center valve and the valves are simulataneously actuated by a linkage which establishes a pattern of off-center displacements of their valve members to initiate pivoting of the wheels. The valves are mounted on pivotable wheel representation members which pivot with the wheels, via cables connecting the representation members to support shafts upon which the wheels are mounted, to return the valves to their blocked-center positions as the wheels pivot to a pattern of positions on the chassis of the machine similar to the pattern of displacements of the valve members resulting from operation of the linkage. A cutting drum is mounted on the chassis to form a cut in the roadway, such cut having a shape determined by the position of the chassis on the support shafts. Such position and the depth of each side of the cut are shown by scales, mounted on the chassis near each end of the drum and near the rear end of the chassis, and pointers mounted on rods positioned by the roadway surface. String lines, extending between supports pivotally attached to the ends of the chassis, provide a grade reference for control of the position of the chassis relative to the roadway. Portions of the supports which engage the roadway are laterally positionable on the chassis for selection of a grade line.
REFERENCES:
patent: 1995450 (1935-03-01), French
patent: 3272099 (1966-09-01), Drake
patent: 3414327 (1968-12-01), Austin
patent: 3771892 (1973-11-01), Munyon et al.
patent: 3807887 (1974-04-01), Tate
patent: 3811787 (1974-05-01), Beaty et al.
patent: 3846035 (1974-11-01), Davin
patent: 3879149 (1975-04-01), Smith et al.
patent: 4029165 (1977-06-01), Miller et al.
patent: 4140193 (1979-02-01), Miller
patent: 4186968 (1980-02-01), Barton
Smith Donald W.
Swisher, Jr. George W.
Teel Larry W.
CMI Corporation
Purser Ernest R.
LandOfFree
Steering and cutter drum positioning in a paved roadway planing does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Steering and cutter drum positioning in a paved roadway planing , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Steering and cutter drum positioning in a paved roadway planing will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1862447