Abstract: A reciprocating impact tool such as a rammer or a breaker is provided with a lubricating oil supply system that supplies lubricating oil to a fuel supply line of the tool's two-cycle engine, thereby eliminating the need to premix the fuel and oil. The oil is supplied at a rate that varies with the speed of the reciprocating member of the tool, thereby assuring that the fuel and oil are mixed in the proper proportions. The oil pump delivers oil to the fuel supply line well-upstream of the engine's carburetor or other fuel supply device, thereby taking advantage of movement and vibration of the reciprocating member to assure that the delivered oil is thoroughly mixed with the fuel in the fuel line before the mixture is inducted into the engine's combustion chamber, leading to complete atomization of the oil and resultant benefits, including improved lubrication and complete combustion of the oil.

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: An eccentric cone crusher having multiple counterweights. More particularly, the present invention provides a cone crusher including a frame, a crusher head for eccentric rotation about an axis, an eccentric member supporting the crusher head and having a center of gravity off the axis of eccentric rotation, and at least two counterweights attached to the eccentric. Utilizing more than one counterweight permits greater flexibility in positioning the counterweights, and minimizes moments and other stresses on the apparatus.

Abstract: A cone crusher having a crusher head assembly including a crusher head having a cone-shaped surface and an underside opposite the cone-shaped surface, the underside having an annular socket engagement surface, a one-piece frame including a peripheral portion and a central portion, the central portion having a wall forming a socket having an upper edge providing a continuous annular head support surface engaged with the socket engagement surface, the upper edge of the wall defining an opening, the wall defining a socket bore extending from the opening into the central portion, the central portion having a hub located within the socket and extending into the socket bore; and an eccentric assembly supported on the hub, the eccentric assembly including an eccentric member engaged with the crusher head assembly and including a ring gear fixed to said eccentric member, the ring gear being housed by the socket bore in a position surrounding the hub, the gear ring being removable through the opening.

Abstract: A cone crusher having a main frame, a crusher head interconnected with the main frame, a crusher bowl positioned adjacent to the first crusher member, and a double-acting hydraulic lift interconnected with both the main frame and the second crusher member. A force transfer member extends downward relative to the crusher bowl. The hydraulic lift includes an upper end interconnected with the main frame and a lower end interconnected with the force transfer member, thereby providing a downward clamp force on the force transfer member to compliantly clamp the crusher bowl to the main frame in an operating position. The hydraulic lift can provide an upward lift force on the force transfer member to move the second crusher member from the operating position to a clear position.

Abstract: A cone crusher having a main frame, a crusher head interconnected with the main frame, a crusher bowl positioned adjacent to the first crusher member, and a double-acting hydraulic lift interconnected with both the main frame and the second crusher member. A force transfer member extends downward relative to the crusher bowl. The hydraulic lift includes an upper end interconnected with the main frame and a lower end interconnected with the force transfer member, thereby providing a downward clamp force on the force transfer member to compliantly clamp the crusher bowl to the main frame in an operating position. The hydraulic lift can provide an upward lift force on the force transfer member to move the second crusher member from the operating position to a clear position.

Abstract: A power assist handle for providing control signals to a servo mechanism includes a spring-guided means of allowing motion of an input handle in only two directions in a configuration which has almost no friction between stationary and moving parts. Motion is sensed by a pair of Hall-effect sensors, each of which provides a signal output proportional to the displacement of the input handle in a respective orthogonal direction. The sensors and associated permanent magnets are arranged so that each is sensitive in one of the two directions and insensitive in the other.

Abstract: A game which can be played by two or more players wherein each player receives an individual game set having a storage box containing three groups of building blocks, the blocks of each group being of the same configuration. The cover of the storage box serves as the gameboard for that player, and includes receptacles for holding one face of a regular pyramid structure having a square base. The building blocks are assembled on the gameboard to form the pyramid structure on the gameboard. The blocks of a first group are in a particular shape whereby, when positioned on the gameboard they each produce a four faced regular pyramid extending upwardly from the gameboard. The blocks of the second group are in the shape of a symmetrical octahedron having a bifurcated lateral edge defining a pair of angularly oriented faces that extend toward the central vertex. The blocks of the third group are in the shape of a four faced oblique pyramid having a parallelogram base.