Title: Portable earth boring machine with steering head

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

Application Number: 471440
Filing Date: 1974-05-20
Publication_date: 1977-03-22
Assignee: The Richmond Manufacturing Company (Ashland, OH)
Primary Class(es): 175/73 175/61
Other Classes:
US Patent Ref:

3141512	Jul, 1964	Gaskell et al.	175/61.
3190374	Jun, 1965	Caperan et al.	175/74.
3326008	Jun, 1967	Baran et al.	175/73.
3415329	Dec, 1968	Mirhord	175/73.
3465834	Sep, 1969	Southworth	175/73.
3526285	Sep, 1970	Adkins et al.	175/73.
3587756	Jun, 1971	Adkins et al.	175/61.
3637032	Jan, 1972	Jeter	175/73.
3712391	Jan, 1973	Coyne	175/61.
3743034	Jul, 1973	Bradley	175/73.
3767836	Oct, 1973	Geis et al.	175/61.
3817336	Jun, 1974	Sears	175/45.

Other Refs:
Primary Examiner: Purser, Ernest R.
Assistant Examiner:
Attorney: Fultz; Palmer