Abstract: A machine for reducing worn-out vehicle tires to small chip-like particles comprises a frame on which an elongated shaft is journaled for rotation, the shaft having a first and second plurality of rotary cutting blades, each of a different diameter affixed to the shaft so as to be rotatable therewith. Also affixed to the frame is a set of stationary cutter bars whose sharpened edges are disposed within a predetermined close tolerance to the periphery of the rotary cutting blades. A large, massive flywheel is attached to one end of the shaft and is driven by a suitable motor. Surrounding the rotary cutting blades is a shroud which, in turn, suppots an infeed hopper having a spiked drum journaled therein.

Abstract: A machine for facilitating the removal and replacement of tire casings from and on the rims of vehicle wheels. The machine incorporates a first hydraulically actuated tool for breaking the bead of the tire casing to be removed free from the rim. Subsequently, the wheel is placed upon a motor driven turntable and clamped in place relative thereto by a second hydraulically actuated mechanism. Once the wheel and tire are clamped in place, a tool support head is brought into play for supporting a tire iron, the end of which is introduced between the rim and the tire's bead. Now, when a hydraulic motor is actuated, the turntable with the wheel and tire clamp thereto is rotated causing the tire bead on one side of the tire to be lifted free of the rim. The process is repeated for the tire bead surrounding the opposite side wall, at which point the old tire has been totally removed from the rim.

Abstract: A shear mechanism for cutting worn out vehicle tires into arcuate segments to facilitate storage and transportation. First and second vertically extending anvil members are mounted on a base in parallel, spaced-apart relationship to one another. The anvil members include removable female die members. Pivotally joined to the base is a blade member, the blade member also having a replaceable working edge. The blade is driven by a hydraulic ram and when a tire is positioned against the anvil and the ram is actuated, the blade will move into the gap between the spaced-apart anvil members and, in doing so, will sever through the side walls and tread surface of the vehicle tire.