Tool driving or impacting – Automatic control of power operated means – Tool advance causing or controlling means
Patent
1976-12-03
1978-07-11
Shapiro, Jacob
Tool driving or impacting
Automatic control of power operated means
Tool advance causing or controlling means
61 58, 173 57, E02D 1100
Patent
active
040993876
ABSTRACT:
The invention relates to a method and apparatus for producing steel piling and a machine for driving the same in earthen strata and further teaches fabrication of the steel piling either by a rolling mill or an extrusion machine, said piling being provided with integral portions that are later deformed to produce longitudinally extending ducts that are suitably pierced to jet streams of water carried by the ducts to the opposed sides of a section of piling.
REFERENCES:
patent: 2023966 (1935-12-01), Montee
patent: 3101956 (1963-08-01), Muller
patent: 3232359 (1966-02-01), Baglow
patent: 3763941 (1973-10-01), Leibee et al.
Frederick Leonard L.
Greigg Edwin E.
Greigg Edwin E.
Shapiro Jacob
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