Variable speed plow with moldboard pivoting about a forward vert

Details Variable speed plow with moldboard pivoting about a forward vert Variable speed plow with moldboard pivoting about a forward vert

1980-12-15

1982-03-16

Marlo, George J.

Earth working

With actuator

For relatively movable earth engaging parts

172736, 172754, 172742, 172647, A01B 312, A01B 1510

Patent

active

043196454

ABSTRACT:
A variable speed plow bottom has a moldboard structure (37) pivotally connected to a fixed portion which includes a frog (14) and a share (17). The pivotable moldboard structure (37) includes an arm (53) whose forward end (52) is pivotally journaled on a vertical axis (49) in a socket (51) in the point (16) of the frog (14) forwardly of the moldboard (18). The moldboard structure (37) is selectively pivotable about the axis (49) by a hydraulic jack (28) between a low speed plowing position (FIG. 2) and a high speed plowing position (FIG. 3).

REFERENCES:
patent: 247110 (1881-09-01), Richard
patent: 255898 (1882-04-01), Taylor
patent: 2154973 (1939-04-01), Chibnik
patent: 2326097 (1943-08-01), Horner et al.
patent: 2487737 (1949-11-01), Skinner
patent: 2816498 (1957-12-01), Takakita et al.
patent: 4062410 (1977-12-01), Moe
patent: 4141419 (1979-02-01), Buchele et al.

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