Hay making machines
OwnerCornelis van der Lelyinventor
Life of this patent
Estimating the term…
Abstract
A hay-making machine has at least one rake member rotatable about an upwardly directed axis of rotation and comprising tines, which are outwardly pivotable by centrifugal forces exerted during rotation of the rake member. The tines convert from a working position and a transport position or conversely solely by centrifugal force and their own weight without the need for using spring means. According to the invention the tines are pivotable into a transport position only by means of their dead weight.
Claims37
A hay making machine attachment comprising frame means and at least one rake member with a central portion rotatably mounted on an upwardly extending shaft supported on said frame means, said rake member having arms pivotably associated with said central portion and said arms being pivotable about corresponding axes, tines being pivoted to said arms, said arms being freely movable by centrifugal force about said axes outwardly from said shaft and said tines being moved to substantially radial positions during the operative rotation of said rake member, said tines being arranged in groups and each group being mounted on a tine support connected to a corresponding one of said arms, said support having the general shape of a U-shaped bracket with limbs being located one above the other and said bracket with tines being movable upwardly from a lower position to its substantially radial position.
A hay making machine attachment comprising frame means and at least one rake member rotatably mounted on an upwardly extending shaft supported on said frame means, a central hub of said member mounted on said shaft and arms connected to said hub, tines mounted on the outer portions of said arms and said tines each being freely pivotable relative to said hub through at least two spaced-apart pivot pin connections that interconnect the corresponding outer arm portion to said hub, said arms and tines being movable from lower positions to outwardly directed operative working positions by centrifugal force during the rotation of said rake member.
A hay making machine attachment comprising frame means and at least one rake member rotatably mounted on an upwardly extending shaft supported on said frame means, said member including a central hub on said shaft and arms pivoted to said hub, tines mounted on outer portions of said arms and said tines each being freely pivotable relative to said hub through at least two radially spaced-apart pivot pin connections on the corresponding arm that interconnects the tine to the hub, said connections comprising pins extending substantially parallel to one another and non-parallel to said shaft, said arms and tines being movable from lower positions to outwardly directed operative working positions by centrifugal force during the operative rotation of said rake member.
A hay making machine attachment comprising frame means and at least one rake member with a central portion rotatably mounted on an upwardly extending shaft supported on said frame means, said rake member including arms pivoted to said central portion and said frame means comprising a framework of interconnected beams that extend generally horizontal, said framework having coupling means connectable to a tractor lifting device at its foremost side and tiltable side end parts, said parts being pivotable from a substantially horizontal and protective position to a generally vertical transport or support position in which the rake member is supported by said beams and the arms are pivoted to transport positions between said end parts, said end parts being pivotable about an axis extending generally in the direction of travel of the implement and fixable with respect to the remainder of said frame means in at least two different positions.
Dependencies are inferred from the claim text.