Mineral winning machines

Details Mineral winning machines Mineral winning machines

1979-03-02

1981-06-16

Pate, III, William F.

Mining or in situ disintegration of hard material

Expansible breaking-down devices

Wedge

299 86, 299 53, E21C 2700

Patent

active

042733839

ABSTRACT:
A mineral winning machine is moved back and forth along a mineral, e.g., coal, face to win mineral by a combination of cutting and wedging actions. To effect this winning mode, the machine has at least one cutting device with a cutting disk rotating in front of a frusto-conical wedging body which revolves in an eccentric manner to detach the mineral previously backcut by the disk. The wedging body and the cutting disk are driven by separate concentric drive shafts, preferably with variable speed regulation with the disk rotating faster than the wedging body. In an alternative construction, a cutting chain equipped with both cutting and wedging tools in differential relationship is circulated and engages the mineral face.

REFERENCES:
patent: 2057684 (1936-10-01), Joy
patent: 2572403 (1951-10-01), Stevenson
patent: 3139148 (1964-06-01), Robbins
patent: 3313576 (1967-04-01), Dommann
patent: 4062594 (1977-12-01), Haspert

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