Reciprocating drive method of mining and apparatus therefor

Details Reciprocating drive method of mining and apparatus therefor Reciprocating drive method of mining and apparatus therefor

1976-06-18

1977-12-13

Purser, Ernest R.

Mining or in situ disintegration of hard material

Processes

175336, 299 38, 299 40, 299 86, 299 89, E21C 2506

Patent

active

040625940

ABSTRACT:
A method of mining utilizing a reciprocating drive, in which a tooth is driven along a relatively straight path over an ore surface in one direction of movement so as to cut a groove therein, and then a wheel is substituted in place of the tooth and is rolled within the groove in the opposite direction, the wheel having a radially wedge-shaped circumferential edge portion which applies laterally outward and downward crumbling forces to the groove walls.
Both the tooth and the wheel may be incorporated into a unitary wheel assembly as a single tool, by attaching the tooth to a point on the circumference of the wheel. The tool is then locked against rotation during its powered drive stroke in one direction, when the tooth engages the groove, but during its stroke in the other direction is released to permit rotation of the wheel.
The method provides for working a number of parallel grooves concurrently, with wheels being utilized only in alternate ones of the grooves.
The method may be applied to the end face of a horizontal tunnel, the end face being sloped and the mining tools reciprocating up and down the slope.

REFERENCES:
patent: 1353908 (1920-09-01), Hodgson
patent: 2057684 (1936-10-01), Joy
patent: 2283212 (1942-05-01), Joy
patent: 3139148 (1964-06-01), Robbins
patent: 3612030 (1971-10-01), Blum
patent: 3695724 (1972-10-01), Taylor
patent: 3776594 (1973-12-01), Haspert

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