Coulter beam mounting assembly including articulate joint means
First Claim
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1. A seed or seed and fertilizer drill comprising:
- a frame;
a series of coulters mounted on the frame at positions which are spaced apart in a direction transverse to the direction of operative forward motion of the drill;
a beam to actuate the coulters, the beam extending transverse to the direction of operative forward motion of the drill;
mounting means for the beam whereby the beam is mounted on the frame so that the beam can be raised and lowered relative to the frame;
thrust applying means to apply a down thrust to the beam; and
thrust transmitting means connected between the beam and the coulters and capable of transmitting a downward thrust from the beam to the coulters;
characterized in thatsaid mounting means for the beam comprises articulated joint means permitting, during use, the ends of the beam to rise and fall independently of each other relative to the frame.
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Abstract
Seed drill has a row of coulters which are raised and lowered by a beam extending along and above the row of coulters and connected to the coulters by spring assemblies. The beam is raised and lowered relative to the frame of the drill by two rams to actuate the coulters. The mounting of the beam comprises an articulated joint, such as a ball joint, which permits the ends of the beam to rise and fall independently of each other relative to the frame thereby permitting improved contour following by the coulters and avoiding excessive loads on the beam in the event of failure of one of the rams.
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Citations
8 Claims
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1. A seed or seed and fertilizer drill comprising:
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a frame; a series of coulters mounted on the frame at positions which are spaced apart in a direction transverse to the direction of operative forward motion of the drill; a beam to actuate the coulters, the beam extending transverse to the direction of operative forward motion of the drill; mounting means for the beam whereby the beam is mounted on the frame so that the beam can be raised and lowered relative to the frame; thrust applying means to apply a down thrust to the beam; and thrust transmitting means connected between the beam and the coulters and capable of transmitting a downward thrust from the beam to the coulters; characterized in that said mounting means for the beam comprises articulated joint means permitting, during use, the ends of the beam to rise and fall independently of each other relative to the frame. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification