Abstract: A jaw crusher where the tension rod includes an electronically-controlled hydraulic pre-load and an automatically releasable pre-load whenever adjustments to the size of the material output are made, together with a remote visual indicator of the setting of the size of the material output.

Abstract: A jaw crusher where the tension rod includes an electronically-controlled hydraulic pre-load and an automatically releasable pre-load whenever adjustments to the size of the material output are made, together with a remote visual indicator of the setting of the size of the material output.

Abstract: A multi-use asphalt paving tractor with frame raise capability and a blind-mateable connector to facilitate quick connection with interchangeable attachments for performing the functions of a paver, a mix transfer conveyor and road widener.

Abstract: A jaw crusher where the tension rod includes an electronically-controlled hydraulic pre-load and an automatically releasable pre-load whenever adjustments to the size of the material output are made, together with a remote visual indicator of the setting of the size of the material output.

Abstract: A method and apparatus for heating hot mix asphalt (HMA), via collecting fumes from HMA while the HMA is on-board a vehicle and in motion within the vehicle, and igniting the HMA with engine exhaust and using the heat of combustion of the HMA to heat HMA, such as via the floor of a re-mix machine or paver which is capable of churning and mixing the HMA which increases emission of HMA fumes.

Abstract: A jaw crusher having a dynamically adjustable tramp iron relief system is disclosed. A moveable jaw and a stationary jaw define a crushing chamber, with a lower portion of the moveable jaw cooperating with a lower portion of the stationary jaw to define a closed side setting gap. A hydraulic tramp iron relief system operatively connects at least one of the jaws to the frame and is arranged to permit uncrushable material to pass through the crushing chamber by permitting the lower portion of the jaw to shift to a shifted position in which the gap is increased. The tramp iron relief system includes an adjustable hydraulic cylinder, the hydraulic cylinder arranged to permit the gap to be adjusted during operation of the crusher.

Abstract: A retaining wedge assembly for securing an impeller bar to the rotor of a horizontal shaft impact crusher comprises a recess defined in the rotor and sized to receive the impeller bar. The recess includes a first seat shaped to engage a first portion of the impeller bar and a second seat. A retaining wedge includes a first portion adapted to engage a second portion of the impeller bar, and a second portion sized to engage the second seat. A countersunk slot on the second seat receives the retaining wedge, which in turn cooperates to secure the impeller bar in the recess. Guide flanges may be provided for limiting axial movement of the retaining wedge. Thus, the impeller bar may be supported in the recess prior to start-up of the horizontal shaft impact crusher.

Abstract: A jaw crusher having one or more improved elliptical jaw members is disclosed. The jaw crusher includes a frame, a stationary jaw, and a moveable jaw. The stationary jaw is mounted to the frame and includes a top edge, a bottom edge, and an interconnecting face extending between the top edge and the bottom edge. The moveable jaw, which is shiftably mounted to the frame and is moveable toward and away from the stationary jaw, includes a top edge, a bottom edge, and an interconnecting face extending between the top edge and the bottom edge. The face of at least one of the stationary jaw and the moveable jaw includes an elliptical profile.

Abstract: A horizontal shaft impact rock crusher having breaker plates which are adjustable by hand, using a novel tension rod adjustment nut locking device which employs several loose-fitting retaining devices which, in combination with a bridge to a frame member or another tension rod, hold the tension rod adjustment nut in place.

Abstract: An asphalt plant includes a plurality of asphalt processing components including a first set of components producing volatile emissions and a second set of components requiring process heat. A separate central burner assembly is adapted to supply heat energy in the form of heated gas to satisfy the process heat requirements of the second set of components. A first duct system is provided which includes a fan and which is adapted to capture a portion of the volatile emissions produced by the first set of components and to convey the captured emissions into the central burner assembly for mitigation. A second duct system is provided and includes a fan and is adapted to convey heated gas from the central burner assembly to the second set of components.

Abstract: A horizontal shaft impact rock crusher having breaker plates which are coupled to a shaft or pins which rest in voids along an edge of the crusher and are held in place by a retainer device, such that the breaker plates with the shaft or pins still attached can be removed from the crusher by releasing the retainer devices.

Abstract: A table assembly for a vertical shaft impact crusher includes an impeller having rods embedded vertically in it next to its leading edge. The rods are made from a material which is harder than the material that the body of the impeller is made from. The rods are located where wear is most prevalent. In most situations this would be at both sides of the impeller, but it might be at the center as well. The top surface of the table between impellers is covered with bottom wear plates. The bottom wear plates have raised portions immediately adjacent to the leading edge of the impellers and sloped ramps between the raised portions and the rest of the wear plates.

Abstract: An asphalt paver having a remixing conveyor system that is adapted to substantially or entirely eliminating segregation in hot mix asphalt material delivered to the asphalt paver. The remixing conveying system includes at least one pair of parallelly spaced, oppositely pitched, counter-rotating hydraulically driven feed augers having remixing blades that intermittently displace portions of the hot mix asphalt material generally transversely to the direction that the feed augers convey the hot mix asphalt material from a hopper of the asphalt paver to spreading augers near the rear of the machine. Elongate members over the feed augers provide protection from impact forces and overloading and enhancing lateral extraction of hot mix asphalt material from the hopper. An optional feed screen provides flow control of the hot mix asphalt material in the hopper. A kit is provided for converting existing asphalt paving machines to have desegregating capability.

Abstract: A sealed wheel case is provided for use with a vibratory device for vibrating aggregate material. The vibratory device includes a frame and a rotating shaft extending transversely across the frame, with the shaft having a wheel. The sealed wheel case includes a housing having a base, a peripheral sidewall, and a cover. The housing is sized to receive therein the wheel and is further adapted to house therein a quantity of lubricating oil for lubricating the wheel. A plurality of attachment bolts are provided for securing the housing to the frame. Each of the attachment bolts includes a shank, an inner end disposed within the wheel case and having an inner contact surface, an inner control washer disposed between the inner contact surface and the housing base, with the inner control washer having a first predetermined thickness.

Abstract: A wheel case for a vibratory device. A vibratory device for vibrating aggregate material includes a frame and a rotating shaft extending transversely across the frame, with the shaft being rotatably supported on bearings and having a wheel moveable through a circular path. The bearings and the wheel are disposed in a wheel case which includes a housing having a base, a peripheral sidewall, and a cover, with the housing being sized to receive therein the wheel and the bearings and further being adapted to contain therein a quantity of lubricating oil for lubricating the wheel and the bearings. A baffle is mounted to either the housing base or the housing cover, and extends inwardly into the housing and includes a portion disposed adjacent the wheel path. The baffle is adapted to distribute lubricating oil to the bearings in response to rotation of the wheel.

Abstract: A device for securing the stationary jaw to the frame of a jaw crusher is disclosed. The device includes a crusher frame having top and bottom spaced apart cross members, a stationary jaw, and a threaded draw rod having a pair of inwardly moveable wedge members. The stationary jaw includes a top edge, a bottom edge, and a pair of interconnecting sides, and further includes a top lug adjacent the top edge and a bottom lug adjacent the bottom edge. The top lug is adapted for placement adjacent the frame top cross member, and the bottom lug is adapted for placement adjacent the frame bottom cross member. The draw rod is disposed such that the wedge members are positioned to engage the jaw top lug and the frame top cross member. Accordingly, in response to inward movement of the wedge members, the stationary jaw is progressively more firmly secured to the frame, thereby preventing undesired movement of the stationary jaw during operation of the crusher.

Abstract: An improved vertical shaft impact crusher, and in particular a crusher having a shoe assembly attached to a rotatable table assembly, the shoe assembly comprising a bracket, a shoe, and mounting bolts for removably attaching the shoe to the bracket. The shoe has a contact surface which engages a support surface of the bracket to reduce shear forces in the mounting bolts during rotation of the table assembly. The crusher also has a liner for protecting an outside face of the bracket. The liner has spacers located on a mounting surface which create a gap between the liner and the bracket, thereby reducing a prying action caused by uneven deflections in the mounting bracket during rotation of the table assembly.

Abstract: An asphalt plant including a plurality of asphalt processing components, with a selected first set of the components producing volatile emissions and a selected second set requiring process heat energy. A central burner assembly is connected to the selected second set of components by an insulated duct system for providing heat energy to the second component set. A first duct system is adapted to capture a portion of the volatile emissions produced by the first component set and convey the captured emissions into the central burner for mitigation. The central burner is preferably a media burner incorporating flameless combustion technology as well as an adjustable internal fuel injection system, which results in safer and more controllable combustion. Even with captured fugitive emissions in the inlet air, the fuel injection system keeps the concentration of combustible materials well below the lower flammability limit.

Abstract: A jaw crusher having device for securing the stationary jaw to the frame against side-to-side movement is disclosed. The jaw crusher includes a frame having a generally vertical base extending between a pair of spaced apart side portions, with each of the side portions including an angled ledge spaced from the base. A generally planar stationary jaw is mounted to the base and extends between the frame side portions, with the stationary jaw having a top edge, a bottom edge, and interconnecting side edges. Each of the stationary jaw side edges includes a beveled lug extending along its length. A pair of generally wedge shaped key plates are provided, with each of the key plates being mountable to an adjacent frame side portion and including a beveled first edge adapted to engage an adjacent beveled side lug of the stationary jaw. Each of the key plates further includes a second edge adapted to engage an adjacent ledge of the frame side portion.

Abstract: A moisture content measuring apparatus and method wherein a sensor station produces calibration data corresponding to measurements of light at two different wavelengths reflected from a material, and the calibration data is then transferred to a hand held computer. The moisture content of a sample of the material is measured and input to the hand held computer. The process is repeated after changing the wetness of the material, and the hand held computer creates a table correlating reflection data to moisture content. The table is transferred to the sensor station which then continuously generates signals representing moisture content in response to real time reflection data and the table. The cost effectiveness of the sensor stations readily facilitates the use of a dedicated sensor station at each of a plurality of conveyors carrying different materials to be combined into a composite of predetermined proportions by weight.