Squaring off and reaming tool for deep elongated trench excavati

Details Squaring off and reaming tool for deep elongated trench excavati Squaring off and reaming tool for deep elongated trench excavati

1976-07-02

1977-11-01

Purser, Ernest R.

Boring or penetrating the earth

Bit or bit element

Impact or percussion type

175411, 37DIG6, E02D 17148

Patent

active

040561542

ABSTRACT:
There is disclosed a tool for squaring off and reaming the walls of an elongated trench excavation which has been previously formed utilizing the slurry trench excavation method. The tool is constituted by a pair of spaced parallel steel beams which are connected and maintained in their space relation by a plurality of connecting steel lattice bars. The lower edges of the beams and the lower connecting lattice bars have cutting and smoothing edges formed thereon for smoothing and squaring the walls of the elongated excavation. The tool may be left in the last excavation of a series and serve as the connected H-beam pair as disclosed in the article appearing in the October, 1973 issue of Roads and Streets Magazine entitled "Slurry Wall, Special Equipment Solved `No Room` Excavation Problem".

REFERENCES:
patent: 22151 (1858-11-01), Butler
patent: 101793 (1870-04-01), Ward
patent: 693235 (1902-02-01), Clark
patent: 867536 (1907-10-01), Rochford et al.
patent: 3463549 (1969-08-01), Goodman

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