Portable earth boring machine

Details Portable earth boring machine Portable earth boring machine

1975-06-30

1977-09-13

Purser, Ernest R.

Tool driving or impacting

Advance causing or controlling means

Motor causes or controls advance

60489, 173 43, 175170, E21D 902, E02D 728

Patent

active

040475786

ABSTRACT:
A portable earth boring machine for the boring of vertically inclined shafts and the insertion of pipeline casing sections characterized by a main frame portion that supports the auger drive and casing pusher apparatus, and a detachably mounted engine frame portion that permits the transmission of power between the engine and the auger drive and casing pusher apparatus not only when the engine frame portion is positioned on the main frame portion at the boring location but also when said engine frame portion is detached and positioned at a location remote from the main frame means. The machine is further characterized by a novel control means for the auger drive apparatus that provides for remote operation and hydraulically actuated variable speed control of the boring auger.

REFERENCES:
patent: 3678684 (1972-07-01), Sorensen
patent: 3682253 (1972-08-01), McIntosh
patent: 3833072 (1974-09-01), Back
patent: 3869003 (1975-03-01), Yamada
patent: 3870110 (1975-03-01), Appleman et al.
patent: 3912024 (1975-10-01), Richmond et al.
patent: 4864915 (1975-02-01), Metailler

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