Portable earth boring machine

Details Portable earth boring machine Portable earth boring machine

1974-11-29

1976-02-17

Purser, Ernest R.

Boring or penetrating the earth

Automatic control

175 61, 175 73, 299 1, 173 2, E21B 710

Patent

active

039385973

ABSTRACT:
A portable earth boring machine for the horizontal boring of shafts and the insertion of pipeline casing sections in installations where excavation from the surface is undesirable. The machine is characterized by a steering head positioned at the front of the casings which steering head is automatically controlled so as to directionally control the direction of extension of the pipeline as the drilling operation progresses.

REFERENCES:
patent: 3326008 (1967-06-01), Baran et al.
patent: 3526285 (1970-09-01), Adkins et al.
patent: 3767836 (1973-10-01), Geis et al.
patent: 3851716 (1974-12-01), Barnes
patent: 3857449 (1974-12-01), Kimura

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