Apparatus for use in mining or tunnelling installations

Details Apparatus for use in mining or tunnelling installations Apparatus for use in mining or tunnelling installations

1976-11-29

1977-11-01

Taylor, Dennis L.

61 41A, 61 42, 61 84, E01G 302

Patent

active

040559599

ABSTRACT:
Apparatus for use in mining or tunnelling installations comprises a shield for housing excavation machinery, and a floor sill for supporting said machinery. The shield is constituted by a plurality of generally cylindrical sections. Means are provided for advancing the shield whilst the floor sill is held stationary. Means are also provided for advancing the floor sill whilst the shield is held stationary.

REFERENCES:
patent: 3379024 (1968-04-01), Wohlmeyer
patent: 3863989 (1975-02-01), Voitsekhovsky et al.
patent: 3989302 (1976-11-01), Arrington

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