Patent ID: 7624692

Claim:
A sand dispenser for a scarifier wherein the sand dispenser is mounted on the scarifier and comprises: a sand hopper having an outlet at a lower end of the hopper; and a gate located below the outlet and moveable between an open position and a closed position for controlling the flow of sand through the hopper and into a distributor, the distributor including a row of distributing lines through which sand is directed to flow and enter grooves in the ground created by blades of the scarifier, each distributing line being aligned with a groove, wherein the gate is a metering cylinder having a row of apertures which, when aligned with the hopper outlet, permit sand to flow therethrough, the metering cylinder being rotatable between the open and closed positions; and wherein movement of the gate is carried out by movement of a rotor assembly which supports the blades of the scarifier, whereby lowering of the rotor assembly to engage the blades with the ground opens the gate, and raising the rotor assembly closes the gate.