Wall brush

Details Wall brush Wall brush

1981-02-26

1983-05-17

Purser, Ernest R.

Mining or in situ disintegration of hard material

Cutter tooth or tooth head

Tooth mounted on helical head portion or head with helical...

299 34, E21C 3518

Patent

active

043837158

ABSTRACT:
A wall brush for dislodging loose matter from a wall face is disclosed. A plurality of x-shaped scraper elements are disposed in a plurality of beams such that end portions of each scraper element project through flange portions of its beam. An anchor chain flexibly suspends the beams. The wall brush is reciprocated on a section of the wall face until it is cleared of loose matter.

REFERENCES:
patent: 610919 (1898-09-01), Raudabaugh et al.
patent: 1129517 (1915-02-01), Powell
patent: 1143032 (1915-06-01), Bresee
patent: 1829591 (1931-10-01), Goddard
patent: 1910290 (1933-05-01), Johnson
patent: 2577924 (1951-12-01), Shacikoski
patent: 2843032 (1958-07-01), Jones

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