Tunnelling machine

Details Tunnelling machine Tunnelling machine

1976-09-30

1978-03-21

Purser, Ernest R.

Mining or in situ disintegration of hard material

Hard material disintegrating machines

With material-handling means

299 70, 299 71, 299 87, E21C 2552, E21C 3520

Patent

active

040800008

ABSTRACT:
An excavating and/or tunneling machine having a mobile support unit with suitable endless tracks for advancing the unit. The support unit serves as the base or chassis for an excavating screw, impact devices and excavating boom tools which all are cooperatively brought into operation to cut into material to be mined, excavated and/or tunneled.

REFERENCES:
patent: 2798711 (1957-07-01), Silver
patent: 3998493 (1976-12-01), Paurat

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