Title: Steerable rock boring head for earth boring machines

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 particularly adapted for rock drilling operations which head is positioned at the front of the casings and remotely controlled by the machine operator so as to directionally control the direction of extension of the pipeline as the drilling operation progresses.

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Inventors: Barnes, Thomas W. (Franklin, OH, US)

Application Number: 497245
Filing Date: 1974-08-14
Publication_date: 1976-03-23
Assignee: The Richmond Manufacturing Company (Ashland, OH)
Primary Class(es): 175/73 175/61, 175/62, 175/122, 175/173
Other Classes:
US Patent Ref:

2165666	Jul, 1939	Tilly	175/122.
3326008	Jun, 1967	Baran et al.	175/73.
3354969	Nov, 1967	Ebeling	175/103.
3415329	Dec, 1968	Marlind	175/73.
3526285	Sep, 1970	Adkins et al.	175/73.
3743034	Jul, 1973	Bradley	175/73.
3767836	Oct, 1973	Geis et al.	175/61.
3797589	Mar, 1974	Kellner et al.	175/230.
3848685	Nov, 1974	Takagi et al.	175/103.

Other Refs:
Primary Examiner: Brown, David H.
Assistant Examiner:
Attorney: Fultz; Palmer