Motor vehicles – Special driving device – Portable track
Patent
1985-12-10
1987-06-02
Love, John J.
Motor vehicles
Special driving device
Portable track
180 95, 180 952, 280 5H, 305 10, 305 27, B62D 5526
Patent
active
046695605
ABSTRACT:
A continuous mining machine comprising an elongated conveyor assembly for continuously conveying coal cut from a coal seam rearwardly away from the face of the coal seam being cut having a frame structure associated therewith. A power driven cutting assembly is disposed forwardly with respect to the frame structure for cutting coal from the coal seam for conveyance rearwardly by the conveyor assembly. A pair of power driven endless track units is provided for mounting the cutting and conveyor assemblies for movement between a tramming position wherein the assemblies are supported on power driven endless track units in a generally balanced condition for transport within the mine and an operative cutting position wherein the assemblies are moved forwardly in a generally unbalanced condition. Vertically extensible and retractable jacks are carried by the power driven endless track units for extension into mine roof engagement so as to stabilize the units when the cutting assemblies are moved from the tramming position into the operative cutting position. Power operated units are provided for moving the assemblies from the tramming position into the operative cutting position while the vertically extensible and retractable means is extended into mine roof engagement.
REFERENCES:
patent: 3095938 (1963-07-01), Bertelsen
patent: 3096840 (1963-07-01), Mazzarins
patent: 3430790 (1969-03-01), Beltrami
Plumley Roger D.
Wilcox, Jr. Arnold G.
Fairchild International Inc.
Hill Mitchell J.
Love John J.
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