A - Human Necessities – 01 – C
Patent
A - Human Necessities
01
C
111/24
A01C 7/00 (2006.01) A01C 5/06 (2006.01) A01C 7/20 (2006.01)
Patent
CA 2004787
The invention relates to an improved method and apparatus whereby a seed drill, slurry injector or other ground penetrative means can be maintained at a predetermined and substantially constant depth. The invention provides a method of controlling the soil penetration of opener assemblies of a seed drill, each opener assembly having a soil penetrating member, which comprises sensing the reaction force from the soil on a gauge member passing over the ground in the proximity of the soil penetrating member of the or each opener assembly, the gauge member selected from the group consisting of a gauge wheel, roller or skid and in response to the sensed reaction force on said gauge member providing adjustment in downforce on said soil penetrating member or members of each opener assembly so as to maintain a substantially consistent penetration depth thereof, and to maintain a substantially constant excess loading on the gauge member. In addition an apparatus is provided having a plurality of ground opener assemblies, each said opener assembly comprising: a soil penetrating member; at least one gauge member, operably coupled to the soil penetrating member; sensing means operably coupled to the gauge member for directly sensing the ground reaction force on the gauge member; and adjustment means, operably coupled to both the soil penetrating member and the gauge member and responsive to the sensed reaction force on the gauge member, for adjusting the downward force on the soil penetrating member so as to maintain a substantially consistent penetration depth of the soil penetrating member and a substantially constant excess loading on the gauge member.
Baker Christopher John
Brown Steven Wayne
Kernohan Craig David
Massey University
Riches Mckenzie & Herbert Llp
LandOfFree
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