Hard rock trench cutting machine

Details Hard rock trench cutting machine Hard rock trench cutting machine

1975-12-15

1977-07-12

Purser, Ernest R.

Mining or in situ disintegration of hard material

Hard material disintegrating machines

Stepper-type advance-causing means

37 96, 175 91, 299 86, E21D 910

Patent

active

040350240

ABSTRACT:
A hard rock trench cutting machine includes a main body assembly, a cutter wheel assembly, and a longitudinal thrust assembly. The main body assembly includes two longitudinally extending cantilever support booms each having a forward portion and a rearward portion. The rearward portions of the support booms are connected to four side wall support feet which move laterally relative to the support booms between a retracted position and an extended position. The cutter wheel assembly includes a cutter wheel frame slidably disposed on the forward portion of the support booms. A cutter wheel drum carrying a plurality of roller cutters is rotatably carried by the cutter wheel frame for rotation about an axis. The longitudinal thrust assembly extends between the main body assembly and the cutter wheel assembly for pushing the roller cutters against the trench end face.

REFERENCES:
patent: 1000959 (1911-08-01), Beissel
patent: 1314011 (1919-08-01), Morgan
patent: 3647263 (1972-03-01), Lauber et al.
patent: 3765725 (1973-10-01), Taylor

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