Mining or in situ disintegration of hard material – Hard material disintegrating machines – Sidewall-working
Patent
1978-02-27
1980-01-22
Pate, III, William
Mining or in situ disintegration of hard material
Hard material disintegrating machines
Sidewall-working
74422, 105 29R, E29C 2922
Patent
active
041847156
ABSTRACT:
A rack device including a plurality of rack segments arranged end-to-end for extending along the side wall of a face conveyor while carrying a mining machine having a gear drive engageable with the rack device to propel the machine along the conveyor at the working face of a mine. The rack segments are joined at their abutting ends by pivot shafts to holders slideable along a rail that is supported by conveyor pan sections or side bracket portions of the face conveyor. The space between drive pins at the ends of the consecutively arranged rack segments is greater than the drive pin pitch by an amount corresponding to the distance of travel by these drive pins from an aligned relation of the rack segments into a maximum angular relation between the rack segments. Sliding movement by the holders on the rail is limited by one or more stop abutment members for each holder. A connecting link extends between two stop abutment members when employed at opposite sides of an individual holder. The holders include projections retained for sliding travel by a guide strip secured to the side bracket of the conveyor. The stop abutment members are also retained by the guide strip.
REFERENCES:
patent: 1435341 (1922-11-01), Sheal
patent: 4067620 (1978-01-01), Lantermann
Gebr. Eickhoff Maschinenfabrik und Eisengiesserei m.b.H.
Murray Thomas H.
Pate, III William
Poff Clifford A.
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