Grading machine

Details Grading machine Grading machine

1981-07-13

1983-10-25

Johnson, Richard J.

Earth working

Towed scraper with ground support wheels

172459, E02F 376

Patent

active

044113234

ABSTRACT:
A grading machine (10) is disclosed. The grading machine (10) includes a main frame (14), a center frame (16), and a rear frame (18). A grading blade (20) is connected to the main frame (14) for pivotable motion about a vertical axis. A pair of spaced wheels (22) is carried by the rear frame (18). The tilt of the blade (20) can be adjusted by rotating the center frame (16) and the main frame (14) connected thereto about a horizontal axis extending in the direction of travel of the machine (10). The height of the blade (20) can be adjusted by adjusting the angular relationship between the center frame (16) and the main frame (14) about a second horizontal axis of a coupling rod (96).

REFERENCES:
patent: 1501892 (1924-07-01), Dunning
patent: 1928778 (1933-10-01), Austin
patent: 2142985 (1939-01-01), Arndt
patent: 2197390 (1940-04-01), Arndt
patent: 2567805 (1951-09-01), Doerfler
patent: 3172480 (1965-03-01), Bemis
patent: 3302317 (1967-02-01), Domres
patent: 3376937 (1968-04-01), Groberg
patent: 3428133 (1969-02-01), Young et al.
patent: 3608643 (1971-09-01), Flood et al.
patent: 3724557 (1973-04-01), Boschung
patent: 3776318 (1973-12-01), Layton

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