A dual seed meter having a metering housing having first and second seed disks with a plurality of openings arranged along a curved path of each disk, wherein the disks overlap to form a convergence region such that seed traveling along the curved paths is delivered to a single point. Certain implementations also have a vacuum chamber defined between a first wall of the metering housing and the first and second seed disks and a seed chamber defined between a second wall of the metering housing and the first and second seed disks.

A particle delivery system of an agricultural row unit includes a particle belt having a particle engagement section configured to receive a particle from a particle metering and singulation unit and a particle exit section configured to expel the particle toward a trench in soil. The particle delivery system includes an air flow system configured to establish an air flow toward the particle engagement section of the particle belt to accelerate the particle toward the particle belt, such that a particle speed of the particle reaches a target particle speed, is within a target percentage of a belt speed of the particle belt, or both, as the particle reaches the particle engagement section of the particle belt. The air flow toward the particle engagement section is a substantial portion of a total air flow established by the air flow system relative to other sections of the particle belt.

A particle delivery system of an agricultural row unit includes a particle belt having a particle acceleration section. The particle belt is configured to receive a particle, to accelerate the particle at the particle acceleration section, and to expel the particle toward a trench in soil. The particle delivery system includes a first hub assembly engaged with the particle belt at a first location and a second hub assembly engaged with the particle belt at a second location. The particle acceleration section is disposed generally at the first location, a substantially no-slip condition exists between the first hub assembly and the particle belt at the first location and between the second hub assembly and the particle belt at the second location, and the first hub assembly and the second hub assembly are configured to stretch the particle belt at the particle acceleration section to accelerate the particle.

A singulating meter apparatus comprising a seed disc operative to be rotated in a housing about a disc rotational axis with inner and outer rows of seed apertures defined by the seed disc. A singulator is arranged to protrude from an outer and inner side of both paths. A seed output port is operative to receive seeds from the seed apertures in the inner and outer aperture rows. In a single mode both rows are dispensed into a single seed conduit, and in a dual mode the seeds from each row are dispensed into individual conduits. A seed counting sensor is mounted on the seed output port counts the seeds passing through the seed output port in both the inner and outer seed conduits. A four row disc is also provided that as well has dual and single options.

The disclosed pneumatic seed meters for small seeds and fine grains may include a rotational disk with a plurality of radially disposed holes. The holes may define a seed path when the rotational disk rotates. The seed meters may also include a sealing structure that is positioned and configured to inhibit seed leakage from the seed meter. The sealing structure may define a seed containment chamber. Various other related methods, systems, and devices are also disclosed.

An agricultural planting machine includes a seed meter configured to meter seed, a transport mechanism configured to transport the seed to a discharge location, and a loader assembly. The loader assembly includes an element having an actuating surface, a hub configured to rotate relative to the actuating surface, and a compartment supported on the hub and configured to receive the seed from the seed meter and to eject the seed into the transport mechanism, the compartment comprising first and second movable elements that are movably coupled to the hub and configured to engage the actuating surface and move relative to the hub based on rotation of the hub relative to the actuating surface.

In one aspect, a calibration method for a seed meter may include controlling an operation of a singulator to apply an initial aggressiveness setting for the singulator. The method may further include controlling the seed meter to rotate a seed transport member of the seed meter relative to a seed chamber of the seed meter containing a plurality of seeds. The method may additionally include performing a calibration cycle, which may include monitoring a first parameter indicative of a number of occurrences of seed multiples as the seed transport member rotates, iteratively adjusting the aggressiveness setting from the initial aggressiveness setting as the first parameter is being monitored, and when the first parameter crosses a first threshold, recording the associated aggressiveness setting as a minimum aggressiveness setting for the singulator.

A particle delivery system of an agricultural row unit includes a shuttle track configured to be disposed adjacent to a particle metering and singulation unit, shuttles movably disposed along the shuttle track, and a track belt disposed inwardly of the shuttle track. Each shuttle is configured to receive a particle from the particle metering and singulation unit at a particle reception section of the shuttle track and release the particle toward a trench in soil at a particle deposition section of the shuttle track. The track belt includes paddles, and each paddle is configured to move a respective shuttle along a particle transfer section of the shuttle track from the particle reception section to the particle deposition section.

A particle delivery system of an agricultural row unit includes a particle belt configured to be disposed apart from a particle metering and singulation unit and a particle acceleration system configured to apply a force to a particle to accelerate the particle from the particle metering and singulation unit and to guide the particle toward the particle belt. The particle belt is configured to receive the particle accelerated from the particle metering and singulation unit, and the particle acceleration system is configured to apply the force to the particle to accelerate the particle from the particle metering and singulation unit to the particle belt, such that a particle speed of the particle reaches a target particle speed, is within a target percentage of a belt speed of the particle belt, or both, as the particle reaches the particle belt.

A seed meter for an agricultural planter in which the seed disc is rotatably mounted within a seed meter housing. As the seed disc rotates, the apertures in the disc rotate along a seed aperture path through a horizontally adjacent seed pool area. The seed disc includes cavities disposed along the seed aperture path to agitate the seeds in the seed pool area. A singulator having multiple co-planar singulator surfaces is biased against the seed side surface of the seed disc.