Patent ID: 8281724

Claim:
A volumetric metering system for metering a product in a seeding machine having a product tank and a distribution system for distributing the metered product having a product distribution line, said metering system comprising: a meter roller having a roller segment along a roller axis for metering product from the tank to the distribution system; a meter housing generally surrounding the meter roller and defining an inlet and an outlet for metered product to flow through; the meter roller and a bottom wall of the housing defining a product passage through which product flows from the inlet to the outlet; an insert disposed in the product passage over which product flows, the insert having a distal end forming a ledge below the meter roller over which metered product flows to the outlet, the insert being movably mounted in the housing to move between an open position in which product is allowed to flow over the ledge and a closed position in which the insert extends across the outlet to block flow of product; and an actuator arranged to selectively move the insert from the open position to the closed position.