Abstract: A seed conveyor assembly that delivers seed to a planting surface in a controlled manner to maintain seed placement accuracy within a trench. In one embodiment, a seed guide for a seed conveyor assembly includes a relief portion and an introduction portion that includes at least one protrusion. The protrusion is angled from a side of the introduction portion toward the center of the introduction portion. The end of the protrusion is proximate the center of the introduction portion being further from the relief portion.

Abstract: A diffuser adapted to dissipate air from seed conveyed in a stream of air at a planter to an opener arm and seed boot. The diffuser provides a housing that pivotally supports a counter-weighted valve piece and a resilient valve piece. Admitted seeds are resiliently deflected between the valve pieces. Repeated deflections between the dual valve pieces and simultaneous venting of the conveying air through an associated fulcrum screen and relief ports at the housing dissipate the conveying air. Spent seed momentarily collects on a surface inside the housing and gravitationally falls from the housing and through a lower lying seed boot at a relatively uniform, singulated rate without scatter and damage to the seed.

Abstract: The object of the invention is a planter, especially for rice, which has a hassis that has a hopper which contains the seeds and which is equipped with nipples each one of which is equipped with a rotating distributor-dispenser and a spout; said chassis has a row of cellular drums and each drum has, in front, a fixed housing in the shape of a circular sector which has a crown which covers the periphery of the drum and a hub which is supported by bearings mounted on an axial extension of the hub of the cellular drum.

Abstract: This invention consists of a tractor drawn planter which automatically deposits equally spaced sprout bearing plugs of specially prepared nutrient soil, into the ground. It is made of a rectangular framework having two rear wheels upon which it rides and a flexible hitch for attachment to the tractor. A tank equipped with an agitator, a plug size measuring device, and a discharge tube, contains the plug mixture. The discharge tube is provided inside with doors which allow the passage of the plugs at predetermined equal intervals. These doors are controlled by a spring-loaded solenoid which is, in turn, controlled by electrical make-and-break contact points powered by the tractor battery. A floating shoe digs a furrow into which the plugs are dropped, and two spring-loaded converging wheels in the rear of the frame cover and tamp down the seeded furrow.