Apparatus for inserting wick drains into the earth

Details Apparatus for inserting wick drains into the earth Apparatus for inserting wick drains into the earth

1991-07-08

1993-05-25

Taylor, Dennis L.

Hydraulic and earth engineering

Foundation

Columnar structure

405 50, 405249, 173149, 173152, 175162, E02D 706, E02D 720, E02D 310

Patent

active

052134490

ABSTRACT:
Apparatus for inserting flexible drainage wick members downwardly into the earth which comprises a mast having a hollow longitudinally extending chamber therein, and an insertion tube disposed in the chamber for movement therein, the insertion tube being provided with a projecting flange that extends outwardly from the chamber through a longitudinal slot therein and that includes openings located at spaced intervals along the longitudinal extent of the flange. A drive gear, operated by a motor, is mounted near the bottom of the mast so that the teeth of the drive gear can positively engage the openings in the insertion tube flange and positively drive the insertion tube into and out of the earth. A pair of spaced support rollers are positioned behind the insertion tube flange at its point of contact with the drive gear to support the flange and also permit any foreign matter ejected from the flange openings by the gear teeth to fall to the earth.

REFERENCES:
patent: 48515 (1865-07-01), Campbell et al.
patent: 1294154 (1919-02-01), Payne
patent: 1464231 (1923-08-01), Yezek
patent: 2239024 (1941-04-01), Vance
patent: 3412813 (1968-11-01), Johnson
patent: 3513587 (1970-05-01), Fischer
patent: 3891186 (1975-06-01), Thorsell
patent: 4166508 (1979-09-01), van den Berg
patent: 4397199 (1983-08-01), Jahn
patent: 4755080 (1988-07-01), Cortlever et al.

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