Patent ID: 7338134

Claim:
A cuffing drum for a scarifying milling machine comprising: a rotatable drum having a generally cylindrical outer surface; a plurality of flight blocks mounted onto the outer surface of the drum, the flight blocks being positioned onto the drum relative to one another such that the flight blocks define a helical flight extending around the outer surface of the drum; each of the flight blocks including a first side wall, a second side wall, and a top surface, the first and second side walls being generally parallel to one another and generally perpendicular to the drum, the top surfaces of the flight blocks defining an outer periphery of the flight; each of the flight blocks including a slot and at least one pocket formed therein, each slot being generally rectangular and adapted to receive a tool holder and including first and second slot side walls, a bottom surface and a rear slot wall, the first and second slot side walls being generally parallel to one another and generally perpendicular to the rear slot wall, and the rear slot wall being oriented at an angle relative to the first and second side walls of the flight block, the at least one pocket intercepting the slot; a plurality of tool holders having a generally rectangular body dimensioned to be received within the slot of a flight block, one tool holder being removably mounted within the slot of each flight block; a plurality of retainers, one retainer being positioned within each pocket of each flight block, each retainer including a planar laterally tapered surface that is parallel to and engages one side of the rectangular body of the tool holder within the slot of the flight block to secure the tool holder therein.