Machine for driving vertical members

Details Machine for driving vertical members Machine for driving vertical members

1978-01-20

1980-04-01

Staab, Lawrence J.

Tool driving or impacting

With means to adjust position of axis of tool advance

Adjustment powered by motor or mechanism

173147, 175171, 405232, E21B 302, E02D 534

Patent

active

041956982

ABSTRACT:
A building machine wherein a leader is supported vertically during an operation, an endless chain is engaged around upper and lower sprockets of said leader, and a base body is mounted on said chain and is forced to move vertically along said leader. A pile which is a member to be driven in, is mounted on a pile holding portion of said base body.

REFERENCES:
patent: 3420320 (1969-01-01), Washita
patent: 3642078 (1972-02-01), Dornfeld et al.
patent: 3734212 (1973-05-01), Perlewitz
patent: 3869003 (1975-03-01), Yamada et al.
patent: 3881555 (1975-05-01), Cresp
patent: 3917005 (1975-11-01), Cannon et al.
patent: 3919816 (1975-11-01), Ranft
patent: 4050526 (1977-09-01), Deike
patent: 4094156 (1978-06-01), Dumont
patent: 4147457 (1979-04-01), Washida

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