Handheld harvester apparatus

A handheld harvester apparatus, comprising:

• a threshing assembly, comprising:
• a threshing drum configured to rotate about a first axle, the threshing drum including a plurality of blades coupled to the first axle, a blade of the plurality of blades including a set of teeth configured to strip a plurality of seeds and plant material from a head of a plant;
• a screening assembly, comprising:
• a paddle assembly configured to receive the plurality of seeds and plant material from the threshing assembly, the paddle assembly configured to rotate about a second axle, the paddle assembly including a plurality of paddles coupled to the second axle;
• and
• a seed chamber comprising one or more interior sidewalls and the paddle assembly, the threshing drum configured to provide the plurality of seeds and plant material to the seed chamber;
• a screen assembly positioned beneath the paddle assembly, the screen assembly comprising:
• a top screen including a first plurality of apertures, the top screen configured to receive the plurality of seeds from the paddle assembly;
• a bottom screen including a second plurality of apertures, the bottom screen positioned beneath the top screen, the top screen configured to translate relative to the bottom screen;
• and
• a plurality of pass-through apertures configured to define a threshold for at least one of a size or shape of a seed of the plurality of seeds, a pass-through aperture of the plurality of pass-through apertures defined by an overlapping top aperture of the first plurality of apertures and a bottom aperture of the second plurality of apertures;
• and
• a collection chamber positioned beneath the screen assembly, the collection chamber configured to receive a seed of the plurality of seeds that exits a pass-through aperture of the plurality of pass-through apertures;
• and
• a housing configured to house at least a portion of the threshing assembly and at least a portion of the screening assembly, wherein the seed chamber further includes a floor and the screen assembly is positioned beneath the floor of the seed chamber, wherein at least one of the one or more interior sidewalls or the plurality of paddles of the paddle assembly including a plurality of ribs, the plurality of ribs configured to clean the plant material from the plurality of seeds prior to transfer to the screen assembly.