Road-legal disc harrow
OwnerBernard O. Domriesinventor
Life of this patent
Estimating the term…
Abstract
A farm implement convertible between a work position and a transport position is disclosed. In the transport position, a compact package is formed less than eight feet in width and less than 14 feet in height. Right and left wings connected to the main frame may be raised by pushing articulated arms a short distance to fold the wings above the main frame.
Claims13
A farm implement capable of being transported on highways without exceeding normal limits for height, width and length comprising (1) a central section having a width less than the maximum legal width allowed for transport on a public roadway without special precautions for wide loads, said central section consisting of a frame carrying at least one gang of farm instruments for work on soil or plants;
- (2) at least one left wing mounted on the central section, said wing having a gang of farm instruments dependent therefrom and movable between (a) a work mode wherein the instruments engage soil or plants and (b) a transport mode wherein the wing is lifted above the central section to a location within the said legal width of the central section;
- (3) at least one right wing mounted on the central section, said wing having a gang of farm instruments dependent therefrom and movable between (a) a work mode wherein the instruments engage soil or plants and (b) a transport mode wherein the wing is lifted above the central section to a location within the said legal width of the central section;
- (4) a hydraulic system for lifting the wings connected to an external source of hydraulic power;
- and (5) at least two lifting mechanisms for lifting left and right wings to a road-legal location above the central section for lifting the left gang and the right gang to a position above the central section that is road-legal.
A farm implement as in claim 4 wherein the hydraulic cylinder has a bore of approximately three inches and a stroke of approximately eight inches.
A farm implement comprising (1) a central section having a width less than the maximum legal width allowed for transport on a highway without special precautions for wide loads, said central section consisting of a frame from which are suspended a forward gang of farm instruments and a rear gang of instruments;
- (2) a left wing mounted on said central section having a forward gang of instruments cooperating with the forward gang of instruments on the central section and a rear gang of instruments cooperating with the rear gang of instruments on the central section;
- (3) a right wing mounted on said central section having a forward gang of instruments cooperating with the forward gang of instruments on the central section and a rear gang of instruments cooperating with the rear gang of instruments on the central section;
- (4) a hydraulic system connected to an external source of hydraulic power;
- and (5) four lifting mechanisms powered by the hydraulic system for lifting the left front and rear gangs and the right front and rear gangs to a position above the central section that is road-legal in both height and width.
Dependencies are inferred from the claim text.