Abstract: A rotating feed distributor for use in connection with rock crushers and other devices. The feed distributor comprises a platform for receiving rocks and a chute having an inlet and outlet wherein the rocks pass through. The feed distributor is designed to reduce wear by evenly distributing rocks into the crusher. The chute is supported and rotated utilizing a motor, drive belts, a sheave structure, thrust bearings and idler wheels. The sheave structure includes a flange and a face which are generally orthogonal to one another. The belts, thrust bearings and idler wheels each engage with the sheave structure.

Abstract: A rotating feed distributor for use in connection with rock crushers and other devices is disclosed. The feed distributor has a platform for receiving rocks and a chute having an inlet and outlet wherein the rocks pass through. The feed distributor is designed to reduce wear and evenly distribute rocks into the crusher by providing a sheaveless drive system that efficiently rotates the chute.

Abstract: A variable throw eccentric cone crusher. The cone crusher comprises a frame, a crusher head supported on the frame for gyration about a first axis, a bowl supported on the frame in spaced relation to the crusher head, and a mechanism on the frame for varying the eccentricity of the gyration of the crusher head. An eccentric member engages the crusher head and is eccentrically pivotable about a second axis radially offset from the first axis. The eccentric member is adjustable to vary the eccentricity of the gyration of the crusher head.

Abstract: A cone crusher with wear indicator. The cone crusher comprises a frame, a head rotatably supported on the frame, a bowl supported on the frame in spaced relation to the head, a liner mounted on one of the head and the bowl, and an indicator for indicating wear of the liner. Preferably, the indicator includes a recess defined by the liner, and the recess is revealed upon erosion of the wearing surface of the liner. Preferably, the cone crusher further comprises a backing material between the liner and the one of the head and the bowl. The backing material preferably fills the recess and is different from the material of which the liner is formed.

Abstract: A conical crusher having a power draw of approximately 1,000 Hp and capable of being installed in a conventional crusher foundation is provided with an annular frame shell with support means capable of withstanding the higher than normal crushing forces, a hydraulic circuit capable of counterbalancing the crusher bowl while it is in a raised position to allow material to be cleared from a jammed crusher, and a mechanical anti-spin head bushing. A method is provided for increasing the production of conical crushers by altering head throw and diameter, increasing the power draw and increasing the internal volume of the crusher.

Abstract: A conical crusher having a power draw of approximately 1,000 Hp and capable of being installed in a conventional crusher foundation is provided with an annular frame shell with support means capable of withstanding the higher than normal crushing forces, a hydraulic circuit capable of counterbalancing the crusher bowl while it is in a raised position to allow material to be cleared from a jammed crusher, and a mechanical anti-spin head bushing. A method is provided for increasing the production of conical crushers by altering head throw and diameter, increasing the power draw and increasing the internal volume of the crusher.

Abstract: This is concerned with a crusher clearing system using a plurality of hydraulic jacks disposed with relation to the adjustment ring and main frame of the crusher such that the jacks, as a unit, apply a generally vertical thrust directly between the upper main frame flange and the adjustment ring so that uncrushable material may be removed from the crushing cavity in a stalled or jammed crusher.

Abstract: This is concerned with a crusher clearing system using a plurality of hydraulic jacks disposed with relation to the adjustment ring and main frame of the crusher such that the jacks, as a unit, apply a generally vertical thrust directly between the upper main frame flange and the adjustment ring so that uncrushable material may be removed from the crushing cavity in a stalled or jammed crusher.

Abstract: This is concerned with a crusher clearing system using a plurality of hydraulic jacks disposed with relation to the adjustment ring and main frame of the crusher such that the jacks, as a unit, apply a generally vertical thrust directly between the upper main frame flange and the adjustment ring so that uncrushable material may be removed from the crushing cavity in a stalled or jammed crusher. The jacks are arranged in pairs and the jacks are selectively energized so that the adjustment ring will tilt relative the main frame flange.

Abstract: This is concerned with a so-called gyratory crusher bowl clamping system in which a screw-threaded bowl is rotated for adjustment and a so-called rocker arm pressure-off clamping system is provided which avoids dirt, dust and sealing problems. The crusher includes a frame which is greatly simplified, but has increased strength and rigidity as well as a support for the crushing head that greatly simplifies manufacturing and machining problems.