Spring tensioned scraper for disc opener
First Claim
1. A scraper assembly for a disc opener carrying a mount frame and a disc rotatably carried by the mount frame, the disc having a radial outer edge engageable with the ground for forming a furrow therein, comprising:
- a bracket connected to the mount frame and extending adjacent and across a portion of at least one flat side of the disc;
a scraper plate mount pivotably coupled at an upper end thereof to the bracket and having an opposite free end, the scraper plate mount including a first side positioned next to the bracket and an opposite second side positioned next to the one flat side of the disc;
a scraper plate adjustably carried on the free end of the scraper plate mount, the scraper plate defining a scraper edge for contacting and scraping the disc, the scraper plate including a furrow engaging region which extends beyond the radial outer edge of the disc along a lower portion thereof such that a furrow formed by the disc is also contacted by at least a portion of the furrow engaging region of the scraper plate to hold the furrow open; and
a biasing member positioned between the upper end and the free end of the scraper plate mount on the first side thereof, the biasing member extending between the first side of the scraper plate mount and the bracket and configured to provide a biasing force therebetween, such that the scraper plate mount is pivoted at the upper end thereof so that the scraper edge of the scraper plate is moved against the disc such that the scraper edge maintains a biased contact with the disc even during inward and outward deflection of the disc.
2 Assignments
0 Petitions
Accused Products
Abstract
A ground opener unit for a seeding or planting unit includes an accessory mount attachable to an implement frame and a disc rotatably mounted to the accessory mount for forming a furrow in the ground. A scraper assembly includes a scraper plate defining a scraper edge for contacting and scraping a surface of the disc. The scraper plate is mounted to the arm by a pivot pin whose length defines a pivot axis about which the scraper plate may pivot in response to deflection of the disc. A spring is generally held in compression to bias the scraper plate against the disc.
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Citations
20 Claims
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1. A scraper assembly for a disc opener carrying a mount frame and a disc rotatably carried by the mount frame, the disc having a radial outer edge engageable with the ground for forming a furrow therein, comprising:
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a bracket connected to the mount frame and extending adjacent and across a portion of at least one flat side of the disc; a scraper plate mount pivotably coupled at an upper end thereof to the bracket and having an opposite free end, the scraper plate mount including a first side positioned next to the bracket and an opposite second side positioned next to the one flat side of the disc; a scraper plate adjustably carried on the free end of the scraper plate mount, the scraper plate defining a scraper edge for contacting and scraping the disc, the scraper plate including a furrow engaging region which extends beyond the radial outer edge of the disc along a lower portion thereof such that a furrow formed by the disc is also contacted by at least a portion of the furrow engaging region of the scraper plate to hold the furrow open; and a biasing member positioned between the upper end and the free end of the scraper plate mount on the first side thereof, the biasing member extending between the first side of the scraper plate mount and the bracket and configured to provide a biasing force therebetween, such that the scraper plate mount is pivoted at the upper end thereof so that the scraper edge of the scraper plate is moved against the disc such that the scraper edge maintains a biased contact with the disc even during inward and outward deflection of the disc. - View Dependent Claims (2, 3, 4)
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5. A ground opener unit for an agricultural planter, the ground opener unit comprising:
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a mount attachable via linkage to an implement frame, the mount carrying a bracket; a disc rotatably mounted to the mount, the disc having a radial outer edge engageable with the ground for forming a furrow therein, the bracket extending adjacent and across a portion of at least one flat surface of the disc; a scraper assembly including a scraper plate mount pivotably coupled at an upper end thereof to the bracket and having an opposite free end, the scraper plate mount including a first side positioned next to the bracket and an opposite second side positioned next to the one flat surface of the disc, and a scraper plate adjustably carried on the free end of the scraper plate mount, the scraper plate defining a scraper edge for contacting and scraping the disc, the scraper plate including a furrow engaging region which extends beyond the radial outer edge of the disc along a lower portion thereof such that a furrow formed by the disc is also contacted by at least a portion of the furrow engaging region of the scraper plate to hold the furrow open; a seed tube positioned adjacent of the disc for discharging seeds into a furrow formed by the disc, the seed tube being supported via the scraper plate mount; and a biasing element forcing the scraper plate against the disc, the biasing element positioned between the upper end and the free end of the scraper plate mount on the first side thereof, the biasing element extending between the first side of the scraper plate mount and the bracket and configured to provide a biasing force therebetween, such that the scraper plate mount is pivoted at the upper end thereof so that the scraper edge of the scraper plate is moved against the disc such that the scraper edge maintains a biased contact with the disc even during inward and outward deflection of the disc. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An agricultural implement having a toolbar adapted to be coupled to a towing vehicle and a plurality of ground opener units coupled to the toolbar, each ground opener unit comprising:
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a mount adapted to be coupled via linkage to the toolbar; a bracket attached to the mount; a disc rotatably carried by the mount, the bracket extending adjacent and across a portion of at least one flat surface of the disc, the disc having a radial outer edge engageable with the ground for forming a furrow therein; a scraper plate mount pivotably coupled at an upper end thereof to the bracket and having an opposite free end, the scraper plate mount including a first side positioned next to the bracket and an opposite second side positioned next to the one flat side of the disc; a scraper plate adjustably carried on the free end of the scraper plate mount, the scraper plate defining a scraper edge for contacting and scraping a surface of the disc, the scraper plate including a furrow engaging region which extends beyond the radial outer edge of the disc along a lower portion thereof such that a furrow formed by the disc is also contacted by at least a portion of the furrow engaging region of the scraper plate to hold the furrow open; a seed tube positioned adjacent the at least one flat surface of the disc for discharging seeds into a furrow formed by the disc, the seed tube supported by the scaper plate mount, and formed to provide a portion of the scraper plate mount; and a biasing member positioned between the upper end and the free end of the scraper plate mount on the first side thereof, the biasing member extending between the first side of the scraper plate mount and the bracket and configured to provide a biasing force therebetween, such that the scraper plate mount is pivoted at the upper end thereof so that the scraper edge of the scraper plate is moved against the disc such that the scraper edge maintains a biased contact with the disc even during inward and outward deflection of the disc. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification