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US 4,283,905 AGranted
Mowing machine
OwnerCornelis van der Lelyinventor
Life of this patent
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OwnerCornelis van der Lelyinventor
Estimating the term…
A mowing machine for connection to the three-point hitch of a tractor which extends laterally of the tractor. A drive of meshing pinions contained in a housing, the drive being powered via belts from the power take-off of the tractor. The drive rotates the cutting members about vertical axes which are supported by and disposed immediately above a plate-like supporting element. Plate-like connecting members connect the cutting members with the drive pinions, such connecting members rotating with the cutting members about the same axis. Adjacent cutting members rotate in opposite directions and adjacent connecting members co-operate to move cut crop to the rear relative the mowing machine in swaths by contact and air movement generated thereby. The drive pinions and the cutting members have roller bearings to minimize vibration. The cutting members have an annular member including a horizontally extending disc with two cutter blades connected thereto by readily removable pins, the pins being held in place by springs and protected on the upperside of the disc by screening plates. The supporting element has openings for removing the pins. It also has threaded openings for receiving housings for the cutting members' bearings. It is straight on the rear and crenated on the forward edge whereby the cutter blades rotate parallel to and extending forward of the crenated edge of the supporting element. Supporting members which are each rounded on their bottom may be secured to the underside of the supporting element under each cutting member. Optionally, the connecting members may be tubular instead of plate-like.
A mowing machine comprising at least two cutting members, bearing housings therefor, and bearings in said housings, drive means and a supporting element, said cutting members each being mounted on a respective said bearing housing for rotation about substantially vertical axes and rotated by drive means disposed above said cutting members, a frame beam disposed above said cutting members, a frame beam disposed above said cutting members, each said cutting member being supported at its lower region by said supporting element, said frame beam and said supporting element be connected only through said cutting members, said bearing housings each accommodating at least two said bearings for supporting the respective said cutting member, said bearing housings being mounted on said supporting element, each said cutter member including an annular collar surrounding said bearings at generally the same level as one of said bearings, a cutter and a pin for for supporting said cutter, in which said supporting element has an opening beneath each said cutting member in which said cutter is pivotally connected to each said cutting member by said pin provided therefor which can be passed downwardly through the corresponding said opening, a spring element locking said pin in place on said annular collar.
A mowing machine comprising at least two cutting members, bearing housings therefor, and bearings in said housings, drive means and a supporting element, said cutting members each being mounted on a respective said bearing housing for rotation about substantially vertical axes and rotated by drive means disposed above said cutting members, each said cutting member being supported at its lower region by said supporting element, said bearing housings each accommodating at least two said bearings for supporting the respective said cutting member, said bearing housings being mounted on said supporting element, each said cutter member including an annular collar surrounding said bearings at generally the same level as one of said bearings, a cutter and a pin for supporting said cutter included in each said cutter member, an opening beneath each said cutting member in said supporting element, each said cutter being pivotably connected in each said respective cutting member by said pin, said pin being adapted to be passed downwardly through the corresponding opening in said supporting element, each said pin being provided with a shoulder near its lower end for supporting its corresponding said cutter, a spring element in each said cutting member which locks said pin in place on said annular collar.
Dependencies are inferred from the claim text.