Excavating – Snow or ice removing or grooming by portable device – Railway clearer
Patent
1984-06-21
1985-04-30
Crowder, Clifford D.
Excavating
Snow or ice removing or grooming by portable device
Railway clearer
172719, E02F 518
Patent
active
045135215
ABSTRACT:
A tillage tool for forming an underground tunnel communicating with the surface by a narrow slot while effecting minimal surface tillage of the soil, the tool including a vertically extending shank plate having a lower edge joined to an elongated cylindrical mounting bar. A slotted forward cylindrical sleeve is demountably telescoped over the forward end of the mounting bar and receives the shank plate in a slot formed therein. The forward end of the cylindrical sleeve has a hardened wear plate secured thereto and positioned so that the wear plate lies in a plane extending at an acute angle to the longitudinal axis of the forward cylindrical sleeve. A rear cylindrical sleeve having a diameter equal to the forward cylindrical sleeve is demountably telescoped over the rear end of the mounting bar and has an end which abuts a rear end of the slotted forward cylindrical sleeve. A sharp edged slicer bar is detachably secured to the forward or leading edge of the shank plate.
REFERENCES:
patent: 376674 (1888-01-01), Nowell et al.
patent: 867270 (1907-10-01), Himble
patent: 970818 (1910-09-01), Harryman
patent: 1426262 (1922-08-01), Disk
patent: 1457271 (1923-05-01), Rinehart
patent: 2680416 (1954-06-01), Russell
patent: 3001591 (1961-09-01), Johnson
patent: 3202222 (1965-08-01), Norris
patent: 3497016 (1970-02-01), Ryan
Crowder Clifford D.
Laney William R.
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