Methods of and apparatus for winning reef

Details Methods of and apparatus for winning reef Methods of and apparatus for winning reef

1976-04-23

1978-01-31

Hafer, Robert

Tool driving or impacting

Advance causing or controlling means

Motor causes or controls advance

299 23, B23Q 500

Patent

active

040710955

ABSTRACT:
A reef winning machine comprises a frame on which is mounted a saddle. The saddle carries a boom on which is mounted a drill. The saddle also carries a member on which is carried a mechanical rock splitter. The drill and rock splitter operate simultaneously, the latter acting in a hole that had previously been drilled by the rock drill. A jack moves the saddle along the frame in steps that are the same as the distance between the drill and rock splitter. An impact breaker may be used instead of a rock splitter.

REFERENCES:
patent: 1273869 (1918-07-01), Joy
patent: 2698169 (1954-12-01), Fawkes
patent: 2754100 (1956-07-01), Cartlidge
patent: 3321032 (1967-05-01), Jensen et al.
patent: 3717379 (1973-02-01), Fletcher et al.
patent: 3758160 (1973-09-01), Hilton
patent: 3805899 (1974-04-01), Hicks et al.
patent: 3877373 (1975-04-01), Bergmann et al.
patent: 3912024 (1975-10-01), Richmond et al.

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