Title: Portable earth boring machine

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.

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Inventors: Richmond, Albert R. (West Salem, OH, US)
Appleman, William S. (Ashland, OH, US)

Application Number: 528464
Filing Date: 1974-11-29
Publication_date: 1976-02-17
Assignee: The Richmond Manufacturing Company (Ashland, OH)
Primary Class(es): 175/24 173/2, 175/61, 175/73, 299/1.3
Other Classes:
US Patent Ref:

3326008	Jun, 1967	Baran et al.	175/73.
3526285	Sep, 1970	Adkins et al.	175/73.
3767836	Oct, 1973	Geis et al.	175/24.
3851716	Dec, 1974	Barnes	175/45.
3857449	Dec, 1974	Kimura	175/45.

Other Refs: 259,009

Jun, 1970	SU

Primary Examiner: Purser, Ernest R.
Assistant Examiner: Favreau, Richard E.
Attorney: Fultz, Esq.; Palmer