Abstract: A system and method for elevating a construction implement relative to a surface under construction includes erecting a support post having a generally hollow cavity on the surface under construction, such as a dam. A quantity of granular material is then dumped into the hollow cavity of the support post. The support post and, specifically, the construction implement, is then jacked to a desired height relative to the surface. A portion of the granular material is then permitted to disperse through and beneath the support post thereby creating a higher support structure on which the support post may then rest. This process may be repeated as the construction progresses and the surface is gradually raised.

Abstract: A device for spreading aggregate material from a discharge conveyor onto a work surface includes a tremie attached relative to the discharge conveyor and a flexible hose connected to the tremie. A crank connected between the tremie and the discharge conveyor permits adjustment of a frequency and an amplitude of the tremie to provide a desired windrow of material on the surface. A distal end of the discharge conveyor is preferably moveable relative to a supply of material to further optimize the desired windrow of material.

Abstract: Single-track and a dual-track conveyor support crawlers are employed in conjunction with a mobile conveyor system. The crawlers comprise rotational coupling between single-track base units and structure link members. The crawlers further comprise a steering subsystem to control relative rotation between the single-track base units and the structure link members. The crawlers comprise translational coupling between the single-track base units and the structure link members, and elevation control subsystems to control the relative vertical position between the single-track base units and the structure link members.

Abstract: A conveyor truss module for constructing conveyor support spans includes a substantially rectangular base assembly and a single-pin top chord joint. The conveyor truss module also includes a plurality of lacing struts coupled to the single-pin top chord joint and the corners of the base assembly.

Abstract: A chord member for facilitating the assembly and disassembly of a concrete conveyor system including a top flange defining a first plane, a pair of depending lips positioned at either end of the top flange, a bottom flange defining a second plane parallel to the first plane and a middle flange defining a third plane perpendicular to the first plane. A clevis is coupled to the top flange or the bottom flange so that a truss of the conveyor system can be attached to the clevis.

Abstract: A self-propelled vehicle mounting a cantilevered conveyor truss for concrete and the like. An improved force balancing frame enables the vehicle to remain stable even though the truss conveyor is extended to maximum length and elevated to a high angle. Improved geometry enables the truss conveyor to be pivoted at a point above a cab mounted on a turntable of the vehicle and forward of the axis of rotation of the turntable, thereby facilitating the deposit of concrete on the conveyor. Polyethylene pads control the motion of the truss conveyors, especially when the truss conveyor is elevated to a high angle. A unique drive assembly enables a mid-section and fly section of the truss conveyor to be moved simultaneously with respect to a base section of truss conveyor such that the fly section moves at twice the rate of the mid-section.

Abstract: An apparatus for delivering concrete to two spaced deposition points having a funnel-shaped hopper with a pair of outlets in the bottom which deposit concrete on conveyors. An inclined chute feeds concrete to the inner conical wall of the hopper as the chute rotates to minimize segregation of the concrete. Each outlet has a gate to control flow of the concrete to the conveyor beneath.To divert concrete from the hopper a side discharge chute is pivotally mounted in the conical wall of the hopper and can be tilted to receive concrete discharged from the inclined chute.

Abstract: The disclosure describes a method and apparatus for continuous mixing, transporting and placing of large quantities of concrete in which aggregate transported on a belt conveyor is mixed with metered quantities of cement and water adjacent a place of pouring. Alternatively, mixed concrete is transported to a place of pouring protected from the elements on a belt conveyor covered by a tunnel that confines cooled air.

Abstract: An over-the-road vehicle having a pivotally-mounted telescoping boom which moves in and out, up and down, and from side to side. An extensible concrete conveyor belt is mounted on the boom for movement with the boom for conveying and placing concrete within the reach of the boom. The vehicle is equipped with stabilizing outriggers which are pivotally mounted on the vehicle and can be folded back in nesting relation to minimize the width of the vehicle during transit. The vehicle also carries a separate belt conveyor for feeding concrete to the extensible conveyor, the discharge end of said separate conveyor being mounted on arms which fold down to reduce the overall height of the vehicle during transit.

Abstract: A load sensor for a concrete conveyor having a tremie which sounds a signal and releases the tremie in case the tremie becomes overloaded. The device has a U-shaped deflection yoke between the tremie and the conveyor which deflects under the weight of the tremie to close switches and actuate the appropriate safety device. All parts are protected from concrete to insure proper functioning.

Abstract: A very large hopper capable of discharging concrete of varying consistency onto a moving belt conveyor in a smooth continuous ribbon. The hopper will handle concrete which is predominately mortar, up to concrete having aggregate comprising 4 to 6 inch mean diameter rocks. In a preferred embodiment the hopper has a flat inclined wall containing a discharge opening closed by a sliding primary gate with a "W" shaped leading edge; the primary gate also having a discharge opening closed by a sliding secondary gate.

Abstract: A concrete placing boom device includes a rail-mounted base, extensible outriggers and a jointed two-section cantilevered arm structure that supports a jointed two-section pipeline. Preferably, the inner arm section is pivotally mounted on the base for rotation about a vertical axis and the outer arm section is pivotally mounted on the inner arm section for rotation and angular elevation. The device is joined with pins for assembly and disassembly for easy transport.

Abstract: Conveying means is mounted on an extensible boom of a wheeled vehicle in such manner that one end of the conveyor system is adapted to receive materials such as concrete or the like from a delivery truck and the other end is adapted to discharge the materials, as through a tremie, into a wall form or the like. The arrangement is such that the boom of the wheeled vehicle can be extended and retracted, inclined and swung from side to side during a continuous materials delivery operation so that the tremie can follow the outline of the wall form for evenly distributing the materials therein. The extension, elevation and wing of the boom can be effected by the operator without interrupting the flow of materials, and the form filling job can therefore be completed in a minimum of time.