Earth working – Miscellaneous
Patent
1987-06-15
1989-11-07
Steinberger, Brian S.
Earth working
Miscellaneous
172311, 172456, A01B 1700
Patent
active
048785458
ABSTRACT:
An agricultural implement having a wing frame which can be folded up relative to another portion of the frame from a working position to a transport position, and having a hinge connection between the frame which permits the wing frame to float relative to the other frame when in the working position but which readily accommodates pivoting of the wing to the transport position. The hinge connection includes pivot pins which provide a pair of parallel pivot axis so that the floating action of the wing frame is such that the wing frame can pivot about its inner end or in effect move straight up and down relative to the other frame, and thereby provide a motion by way of which the wing readily accommodates uneven terrain. While a type of universal floating action of the wing member takes place when in the working position, a simple type locking mechanism is included in the hinge so as to prevent pivoting about the axis of one of the pins when the wing frame is raised to the transport position. Thus in being raised the pivoting only occurs about the axis of the pair of axis. The implement may be provided with a power actuated unit which acts on the locking mechanism so as to move it to its locking condition on initial actuation to in effect transform the hinge connection from one which allows the floating action to one which permits pivoting about a single action. The hinge connection includes a hinge member which has the pivot pins at opposite ends thereof, one end connecting the hinge pin to the other frame and the other end connecting the wing frame to the hinge member. The locking mechanism is a lever to which the power unit is attached and is moved from one position in which it allows pivoting about both pins to another position in which it allows pivoting about only one pin. The structure is simple and therefore inexpensive relative to known structures, most of which do not allow the same universal type movement when in the working condition as the present hinge connection. The presnt hinge connection has substantially no addition parts to accomplish the automatic switch over from the normal working condition to a raising mode.
REFERENCES:
patent: 4074766 (1978-02-01), Orthman
patent: 4207950 (1980-06-01), Kinzenbaw
patent: 4415043 (1983-11-01), Hadler et al.
Steinberger Brian S.
Victory Equipment (1983) Limited
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