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US 4,359,101 AGranted
Ground preparation tool for reforestation
OwnerMichel Gagnoninventor
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OwnerMichel Gagnoninventor
Estimating the term…
This invention relates to an auger and to a plow including such auger. This specification discloses an auger which is suitable for use even in the difficult terrain encountered in typical reforestation operations. An auger in accordance with this disclosure has its axis extending in the direction of movement of the plow and is arranged to rotate in a direction opposing the forward movement of the plow. The auger has a plurality of generally helical turns. Sections of the ground engaging portions around the periphery of the turns have an angle of attack in a plane at a selected angle to the axis of the auger and other sections have angles of attack in planes at a different angle. These ground engaging sections of the periphery are preferably teeth which because of the difference in angles discussed above attack the ground at different cutting angles. The dislodged earth will as is normal with an auger be flung sideways as a furrough is formed, but it will also have a component of motion which is either forward or backwards in relation to the direction of travel of the plow. When, as previously explained the auger is rotating to oppose the direction of the plow, this forward or backward component of motion will depend on the rate of forward movement of the plow less the rearward displacement of particles relative to the auger shaft. While the net effect of the auger is to resist forward motion, selected sections may have an opposite pitch or orientation and those limited sections would have the opposite effect.
An auger adapted for use as a plow to be drawn in a substantially axial direction and rotated to oppose forward motion comprising a plurality of generally helical turns having a ground engaging section of its periphery shaped to have an angle of attack in a first plane at a selected angle to the axis of the auger and at least one additional section of the periphery shaped to have an angle of attack in a second plane at an angle to the axis of the auger different from said selected angle, said periphery being scalloped to provide ground engaging, generally outwardly rounded teeth, said teeth including one series of consecutive convex teeth disposed to meet the soil in said first plane, and at least one additional series of convex teeth disposed to meet the soil in said second plane.
In a plow an auger, means for drawing said auger in a substantially axial direction, means for rotating said auger in a direction opposing forward motion of the means for drawing the auger, said auger comprising a plurality of generally helical turns having a ground engaging section of its periphery shaped to meet the soil in a plane which is at a first angle to the axis of the auger selected to result in ground engaged by said section of the periphery having a small forward component of movement and at least one additional section of the periphery shaped to meet the soil in a plane which is at a second angle to the axis of the auger selected to result in ground engaged by the additional section having a large forward component of movement when the auger is drawn forward.
In a plow an auger, means for drawing said auger in a substantially axial direction, means for mounting said auger for resilient upwards and downwards movement with its axis substantially in the direction of travel of the means for drawing the auger, means for rotating the auger in a direction opposing forward motion of the means for drawing the auger, said auger comprising a plurality of generally helical turns having a ground engaging section ot its periphery shaped to meet the soil in a plane which is at a first angle to the axis of the auger selected to result in ground engaged by said section of the periphery having a small forward component of movement and at least one additional section of the periphery shaped to meet the soil in a plane which is at a second angle to the axis of the auger selected to result in ground engaged by the additional section having a large forward component of movement when the auger is drawn forward.
In a plow an auger, means for drawing said auger in a substantially axial direction, means for rotating the auger in a direction opposing forward motion of the means for drawing the auger, said auger comprising a plurality of helical turns having a periphery scalloped to provide ground engaging generally convex teeth, said teeth including a first series of consecutive teeth disposed to meet the soil in planes which are at a first angle to the axis of the auger selected to result in ground engaged by said first series of teeth having a small forward component of movement and at least one additional series of consecutive teeth disposed to meet the soil in planes which are at a second angle to the axis of the auger selected to result in ground engaged by said additional series of teeth having a large forward component of movement when the auger is drawn forward.
In a plow an auger, means for drawing said plow, means for mounting said auger for resilient upwards and downwards movement with its axis substantially in the direction of travel of the plow, means for rotating the auger in a direction opposing forward motion of the plow, said auger comprising a plurality of helical turns having a periphery scalloped to provide ground engaging convex teeth, said teeth including a first series of consecutive teeth disposed to meet the soil in planes which are at a first angle to the axis of the auger selected to result in ground engaged by said first series of teeth having a small forward component of movement and at least one additional series of consecutive teeth disposed to meet the soil in planes which are at a second angle to the axis of the auger selected to result in ground engaged by said additional series of teeth having a large forward component of movement when the auger is drawn forward.
In a plow an auger, means for drawing said plow, means for mounting said auger for resilient upwards and downwards movement with its axis substantially in the direction of travel of the plow, said means for mounting comprising also means permitting limited movement about a vertical axis, resilient means urging the auger to return to a position with its axis in alignment with the direction of travel of the plow in the event of said movement about a vertical axis, means for rotating the auger in a direction opposing forward motion of the plow, said auger comprising a plurality of helical turns having a periphery scalloped to provide ground engaging convex teeth, said teeth including a first series of consecutive teeth disposed to meet the soil in planes which are at a first angle to the axis of the auger selected to result in ground engaged by said teeth having a small forward component of movement and at least one additional series of consecutive teeth disposed to meet the soil in planes which are at a second angle to the axis of the auger selected to result in ground engaged by said additional series of teeth having a large forward component of movement when the auger is drawn forward.
A plow comprising an upwardly extending support member mounted on a vehicle, an auger type plow member, means for mounting said plow member with the axis of its auger extending in the direction of travel of the vehicle, driving means for rotating the auger on said means for mounting in a direction opposing forward motion of the vehicle, connecting links providing a parallelogram linkage between the upwardly extending supporting member and the means for mounting the plow member so that the auger can be raised and lowered without changing the relationship between the axis of the auger and the horizontal, means for raising and lowering the means for mounting the plow member and spring means acting on the parallelogram linkage to cause the auger to exert downward pressure on the ground while permitting the auger to rise to override obstacles;
Dependencies are inferred from the claim text.