Implements or apparatus for applying pushing or pulling force – Pipe or rod jack – Tie rod tensioner
Patent
1974-09-12
1976-03-23
Simpson, Othell M.
Implements or apparatus for applying pushing or pulling force
Pipe or rod jack
Tie rod tensioner
E21B 1900
Patent
active
039456080
ABSTRACT:
An anchoring means for an earth works tunneling device includes a unit having two planar back-stop members secured together in spaced relation from one another. Between the back-stop members is provided a means for mounting the tunneling device so that a force exerted on the device is transmitted to the stop members. Thus, as the device drives or pulls a pipe or pipe stem through the earth, the counterreactive force is transmitted to one of the stop members which pushes against the adjacent earth bank so as to anchor the tunneling device.
REFERENCES:
patent: 1962466 (1934-06-01), Scott et al.
patent: 2056489 (1936-10-01), Scott et al.
patent: 2612343 (1952-09-01), Fraizer et al.
patent: 2882011 (1959-04-01), Ripstein
patent: 3726506 (1973-04-01), Vanderwaal
Somerville John G.
Vasicek David J.
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