Abstract: A portable vibratory concrete screed is disclosed. The concrete screed includes a screed blade including a flat bottom wall extending between a front edge of the screed blade and a rear edge of the screed blade. The screed also includes a vibratory assembly, with an eccentric weight, coupled to the screed blade, wherein the eccentric weight rotates in a plane which is oblique to the bottom wall of the screed blade. Finally, the screed includes a handle assembly extending from the vibratory assembly and coupling a motor to the vibratory assembly to drive the eccentric weight and vibrate the screed blade.

Abstract: An adjustable, combination floor tile mortar and grout spreading device for applying bonding material at a predetermined thickness in a straight-combed manner, and for spreading grout between floor tiles. The device comprises a telescopically adjustable rectangular frame having a leading edge and a trailing edge and a pair of downwardly extending sides for containing bonding material. The rectangular frame is telescopically adjustable to various widths and can be fixed at a particular width depending upon the size tile for the given installation. In the mortar spreading configuration, the trailing edge incorporates a resiliently mounted downwardly extending trowel blade having a conventional trowel blade edge with either a saw-tooth or square-toothed shape. The trowel blade is adjustable such that the device may be used for spreading various thicknesses of bonding material.

Abstract: A powered concrete screed apparatus comprising a roller rotatably attached to a chassis. The chassis includes an elongated member that extends in spaced, parallel relation to the roller, and is of substantially the same length as the roller. The elongated member is attached to the roller at one end by a motor removably mounted thereto and which includes gears extending therefrom which are operatively attached to the roller, and at its opposite end by a plate which extends between the tubing and roller. A pair of handles are mounted to and extend upwardly from the tubular member, and are independently, slidably adjustable along the length of the tubular member. The handles are also telescopically adjustable, thereby permitting their lengths to be selectively controlled. A throttle is removably attached to one of the handles and electrically connected to the motor, thereby permitting selective control of the power output from the motor.

Abstract: A device for spreading cold-coat tar for securing roofing paper, comprising a hard rubber blade with serration, which, when pushed over the surface to be roofed, spreads the desired coat of tar over a predetermined width of the surface to be roofed.

Abstract: Disclosed are laying planks (11) which allow a variation of the working width of the road finisher and are comprised of a main plank and two displacement planks (13) disposed displaceably on opposite ends of the main plank. For a more precise guidance and more stable mounting of the displacement planks (13) on the main plank, it is known to arrange intermediate slides (14) between the main plank and the displacement plank (13). However, these intermediate slides (14) do not allow a full extension of the displacement planks (13) relative to the main plank. According to the invention, the intermediate slides (14) have guide rods (26, 27) which project from outer end face plates (20) of the intermediate slides (14). As a result, the displacement planks (13) can be extended beyond the region of the main plank over their entire width.

Abstract: For changing the working width of a road finisher, its laying beam (10) is composed of a (central) main beam (13) and two shifting beams (14). In the retracted state, the shifting beams (14) must have only an overall width which is not greater than that of the main beam (13). Furthermore, the working width of the laying beam (10) may be increased by extending the shifting beams (14) to twice the width of the main beam (13). In this case, there is no longer any overlap between the main beam (13) and the shifting beams (14), but the transition of the main beam (13) to the shifting beams (14) causes unsightly imprints on the finished road surfacing. This problem is solved by providing a laying beam (10) which, by offset projections (20, 21) on the shifting beams (14), forms an overlap between marginal regions of the shifting beams (14) and the main beam (13) when the shifting beams (14) are fully extended. This avoids unsightly imprints on the finished road surfacing.

Abstract: An adjustable cement finishing tool including a generally planar float; a rigid mounting bracket coupled to an upper extent of the float; a swiveling member pivotally coupled to the mounting bracket; and a generally elongated arm with a central axis coupled to the swiveling member, and wherein rotating the arm in one direction about its central axis allows it to become engaged with the swiveling member to thereby preclude pivotal movement of the float, and wherein rotating the arm in an opposite direction about its central axis allows it to become disengaged from the swivelling member and thereby allow pivotal movement of the float.

Abstract: An apparatus and methodology for smoothing relatively small pads of freshly laid concrete. The apparatus comprises a pair of broom assemblies joined by a gang bar structure and each pivotally movable on the gang bar structure between first and second angularly displaced positions. A first rope is connected to the apparatus and moves the apparatus across the pad in one direction in response to pulling on the first rope, and a second rope is connected to the apparatus and moves the apparatus across the pad in an opposite direction in response to pulling on the second rope.

Abstract: A buffered guard clearance system for riding and manually pushed powered trowels adapted to allow finishing of a slab surface immediately adjacent an obstacle. The system comprises a movable wing displaceably coupled to the trowel guard cage and a buffer system mounted thereto. The wing is displaceable between a deployed position generally aligned with a lower ring of the cage and a retracted position. When retracted, an unguarded segment of the trowel rotor sweep is established that allows the finishing blades to be deployed immediately adjacent a wall or other obstacle. A displaceable coupling for moving the wing between the deployed position and the retracted position extends from the cage to the wing. The coupling comprises a sliding crossmember mounted on two spaced-apart brackets fixed to the cage. The crossmember supports the wing. The coupling may alternatively comprise electromechanical elements for displacing the wing between deployed and retracted positions.

Abstract: A universal float handle device having a central arched gripping portion and a single foot formed at each end, each foot has formed in it one or more apertures which allows for the handle to be readily attached to a hand trowel float. The base of each foot is flat, and may have a marginal rim provided around its periphery, each foot having an aperture provided therethrough, with counterbores formed into both the bottom end and the upper end of each aperture, to provide clearance for accommodating the locating of a fastener therethrough, and for attaching the handle to a hand float. The aperture through one foot may be elongated, to provide a form of slot for accommodating adjustment in the locating of the fastener at that end, while the aperture provided at the opposite foot may comprise one or more apertures, to provide adjustment in the locating of the fastener when attaching that end of the handle to the hand float device.

Abstract: An apparatus and methodology for smoothing relatively small pads of freshly laid concrete. In one embodiment the smoothing apparatus comprises a pair of broom assemblies joined by a gang bar structure and each pivotally movable on the gang bar structure between first and second angularly displaced positions. With the broom assemblies in their first angular positions, the smoothing apparatus is moved in one direction across a first section of the pad by a first worker pulling on a first rope and a second worker commensurately letting out a second rope, whereafter the smoothing apparatus may be moved laterally on the pad to overlie a second section of the pad laterally adjacent the first pad section and the smoothing apparatus may be moved in the opposite direction across the second section of the pad with the broom assemblies in their second angular positions, the second worker pulling on the second rope, and the first worker commensurately letting out the first rope.

Abstract: A rotary trowel device includes a substantially horizontal shroud having an electric motor assembly mounted on the upper surface thereof, and having a rotary trowel blade assembly located below the shroud. The trowel blade assembly includes a hub connected to an output shaft of the electric motor assembly. The trowel blades are shiftable between tilted and non-tilted position by components located within the hub.

Abstract: A concrete screed which includes an elongated rail and a detachable shoe with a screeding surface. The shoe reversibly snap fits or slides onto the rail, and may be replaced when the screeding surface becomes worn. The rail includes hand grips for hand operation, and a hole in which a handle, pole, or hook may be inserted for pulling or pushing the screed. Screed rail supports may be attached to the elongated rail to allow the screed to be pulled over screed rails while screeding.

Abstract: An adjustable, floor tile mortar and grout spreading device for applying bonding material at a predetermined thickness in an efficient manner, and for spreading grout between floor tiles. The device comprises a telescopically adjustable rectangular frame having a leading edge and a trailing edge and a pair of downwardly extending sides for containing bonding material. The rectangular frame is telescopically adjustable to various widths and can be fixed at a particular width depending upon the size tile for the given installation. In one embodiment, the trailing edge incorporates a downwardly extending trowel blade having a conventional trowel blade edge with either a saw-tooth or square-toothed shape. The trowel blade is adjustable such that the device may be used for spreading various thicknesses of bonding material.

Abstract: In one aspect of the present invention, an automatic screed temperature control is disclosed. The control senses the screed temperature and compares the screed temperature to a lower set point. In response to the screed temperature being less than the lower set point, the control causes fuel to dispense into the combustion chamber and subsequently causes the fuel to ignite in order to heat the screed. The screed is heated until the screed temperature becomes greater than an upper set point.

Abstract: An attachment for a screed bar which is used to level concrete in concrete forms wherein the screed bar is operated by two individuals who place the bar on the concrete forms and then move it back and forth along the forms to level the concrete after it has been freshly poured into the forms, the attachment comprising an inverted U-shaped member attached adjacent each end of the screed bar, each member having a pair of parallel plates extending outwardly and upwardly therefrom at an angle of about 70.degree. with respect to the vertical, a handle pivotally connected between each pair of parallel plates and extending outwardly and pivotally from each member, whereby the individuals can grasp the handles and move the screed bar over the forms and the concrete therein without having to stoop over.

Abstract: A laser controlled automatic grade control system for finishing plastic concrete mounts the finishing tool behind the support towers to resist furrowing. The system functions with a variety of elongated, multi-section concrete finishing tools such as triangular truss screeds or the like, all of which can be quick connected or disconnected from the tower system. Skis that support the device facilitate sliding, winch-driven movement over and through plastic concrete. Spaced apart, vertically upwardly extending towers support the device along the length of the finishing tool. The towers are cylinder-adjustable in length. Cylinder extension and retraction are governed by a sensor-controlled system that is laser operated. The sensors respond to a preestablished laser beacon to control finishing tool elevation as the device traverses the pour in response to its winches.

Abstract: A road finisher comprising a chassis is described, the chassis being movable on a travelling gear and carrying a front stock hopper, a primary drive unit an incorporated secondary drive units. The road finisher is provided with a paving screed which is dragged at the rear and which is articulated on the chassis via laterial outriggers, as well as with a lifting device which is provided between the chassis and the outrigger and by means of which the paving screed can be moved to a transport position raised from the ground. The troublesome influence of the paving screed when the road finisher travels for the purpose of transportation is reduced or eliminated to a large extent in the case of such a road finisher.

Abstract: An improved flatwork concrete finishing apparatus includes a side-by-side pair of parallel spaced elongate brush assemblies, each brush assembly having an elongate head with a pair of upper corners or stops, a downwardly directed throat with opposing inwardly directed grooves, and a plurality of replaceable elongate blocks, each having at least one row of color-coded bristles with a stiffness different than the bristles of at least one of the other blocks. Each of the blocks have outwardly directed ridges adapted to be slidably received by the grooves. A plurality of corresponding pairs of brackets attached to each of the pair of brush assemblies are interconnected by a plurality of spacers pivotally connected thereto.

Abstract: A concrete finishing tool that quickly changes in length to selectively bypass columns, curbs and other obstacles during concrete finishing includes a unique foldable bypass system at an extremity that can be folded between extended and retracted positions. When actively deployed the bypass is aligned for finishing concrete. In the retracted position it assumes a clearance orientation out of contact with the concrete. The bypass comprises a finishing wing for contacting concrete, a linkage system and a vibrator. The wing may comprise a forward strike-off and a trailing float. The linkage system comprises a pair of abutting links interconnected at an axially offset intermediate pivot point. One of the links is pivotally attached to the tool and the other link is pivotally attached to the wing. When the linkage system folds the links are moved between length additive and length subtractive orientations.

Abstract: A float finish machine includes a rotor with a disk supporting a set of trowel blades, accommodated in corresponding radial slots, that are angularly adjustable with respect to the rotor about axes that are substantially parallel to the floor. The machine includes an engine and a speed reducer having an output shaft with a sliding collar positioned thereon. An idle spacing element, having a hub that is ensheathed by a sleeve, and that is rotatably coupled with the shaft through the sliding collar, has a diameter greater than the disk and is positioned on the shaft to freely rotate about the axis of the shaft. The sleeve operates in conjunction with a device for setting the angular position of the trowel blades.

Abstract: An improved screed control device includes two pairs of interacting cylindrical surfaces for controlling the "angle of attack" or elevation of a screed of a paver, a first pair of the two pairs of interacting surfaces having either right-hand or left-hand threads and the other pair of interacting surfaces having threads with handedness opposite from that of the first pair. A reversing pin is adapted to selectively maintain one pair of the two pairs of interacting surfaces stationary relative to each other as a hand-crank arrangement operationally causes the other pair to threadably interact. Handedness of the control device is accomplished by moving the reversing pin to a different set of co-linearly aligned apertures such that the threadably interacting pair of the two pairs of interacting surfaces are caused to become stationary relative to each other and the stationary pair to become threadably interacting relative to each other.

Abstract: A power crown adjustment apparatus for an asphalt screed includes first and second screed subassemblies movable with respect to each other, power apparatus for moving the subassemblies with respect to each other to alter the crown and control apparatus for automatically preventing the first and second screed subassemblies from moving beyond the predetermined range of movement.

Abstract: Efficient paving operation requires that the levelling operation of asphalt be carried out accurately along a reference line which follows a given direction along a roadside. A simple and effective automatic control device for controlling the steering direction in conjunction with adjustments of the screed for an asphalt finisher (shortened to finisher) is presented. The control device automatically regulates the extension or retraction of the screeds on both sides of the finisher in reference to a visual display of the reference line following some objects along the roadside. The visual detection system of control is simple and economical and provides an accurate control over the direction of paving.

Abstract: The invention relates to a system and apparatus for use with a vehicle having a dump bed for carrying a material and having a moveable panel defining an outlet in the dump bed for dispensing material carried in the dump bed to a road surface when the dump bed is raised, comprising a baffle positioned in the dump bed extending upwardly from a floor of the bed, and extending from a region of the moveable panel to a region of a wall of the bed for directing the material to a portion of the outlet as gravitational force acts on the material when the dump bed is raised. Such system and apparatus may further include a receptacle coupled to the vehicle for receiving a flow of the material passing through the portion of the outlet and having a variable opening for dispensing controlled amounts of the material to the surface. Such system and apparatus may further include a leveling sled for leveling the material after the material leaving the dump bed reaches the road surface.

Abstract: A concrete distribution system for pouring concrete floors over areas inaccessible to concrete trucks comprises a conduit assembly, leveling member, interconnecting cables and activating members. The conduit assembly includes a first rigid, moveable support which supports a first pipeline immediately above the area to be concreted. The pipeline has a plurality of openings through which the concrete is poured across the area. Control valves selectively open and close access to the openings so that concrete pours across the area. The first support is interconnected by cables with the leveling member. Activating members simultaneously move the conduit assembly and leveling member across the area to be concreted.

Abstract: A concrete placing, screeding and finishing tool that bypasses columns, curbs and other obstacles during concrete finishing. An elongated finishing body comprises retractable bypass wings. The body comprises a front strike-off, a trailing float and a primary eccentrically weighted shaft extending through the body for vibrating it when vigorously rotated, The bypass is coupled to an outer end of the body and may be deployed either in an active position, aligned with the body for finishing concrete, or in a displaced clearance orientation out of contact with the concrete, The bypass comprises a finishing wing, a linkage system and a vibration mechanism, The wing comprises a forward strike-off, a trailing float and a reinforcing tread plate extending from the strike-off to the bull float, The linkage system comprises a bracket secured to an end of the body and a pair of locking, slidable struts extending from the bracket to the wing.

Abstract: In a preferred embodiment, an adjustable concrete rod for leveling the surface of uncured concrete disposed within a concrete form, the adjustable concrete rod including: an elongate member having a lower edge for the engagement and leveling of the uncured concrete; handles extending outwardly from each end of the elongate member, the handles engaging upper edges of the concrete form, the handles being manually graspable to move the elongate member along the surface of the concrete, with the lower edge adjustably in contact therewith, while the handles are in engagement with upper edges of the concrete form; and a securing apparatus to permit selective lengthwise adjustment of the elongate member.

Abstract: A releasable screed handle for being operatively secured to a selected screeding member to manipulate the screeding member through the various spreading and smoothing motions requisite in working concrete. The screed handle consists of an elongated handle that is pivotally affixed, at an angle of about 105.degree. from the vertical, to a lockable clamping plier that is capable of receiving and clamping a screed member of selected size and thickness.

Abstract: A powered rotary screed has a plurality of interchangeable modules of different lengths so that the power screed can accommodate a range of job applications. Additionally, the rotary screed comprises a centrally located expansion member that can be adjusted to cause an upper ridge member of the rotary screed to expand outward, thus raising a medial portion of the roller screeds so that they may be adjusted to maintain horizontal alignment. The screed is propelled by two drive tubes that are supported by drive modules and powered by hydraulic motors. The screed further comprises a two-section strike tube which is likewise powered by a hydraulic motor. An operator rides in an operator's station and controls the speed and direction of the rotary screed.

Abstract: Earth working apparatuses and more specifically a ditcher or slope cutting device adapted to be connected with a conventional three point hitch mounted at the rear of a conventional tractor. The earth working apparatus includes a rigid square or rectangular frame having pairs of pivot lugs spaced laterally on a front member thereof for pivotal connection to the lower links or arms of a three point hitch and a pair of centrally located upwardly disposed pivot lugs pivotally supporting an upright member having its upper end connected to the upper link or arm of the three point hitch. A hydraulic ram or mechanical structure interconnects the frame at a point spaced rearwardly from the front and an upper end portion of the upwardly extending member in order to adjust the angular relation between the frame and the upwardly extending member and angularly adjust the frame in relation to the three point hitch and in relation to the ground surface.

Abstract: An applicator for applying seamless flooring material to a subfloor is disclosed. The preferred embodiment includes a chassis steerably mounted on wheels which are propelled by hydraulic motors in series. A dispensing hopper on a frame is towed behind the chassis from a shaft on a steering column and enabled to move in three dimensions independent of the chassis. The hopper is supported by hopper wheels with an axle directly above a screed blade which distributes the flooring material dispensed out of the hopper. The height of each side of the hopper is independently adjustable on each side by screw-threaded rods and is not disrupted by lifting the hopper out of operation.

Abstract: A heated screed assembly (10) for use with a paving machine (12) includes a screed (16). An elastomeric, electrically-powered heating element (36) is carried on the upper surface (28) of the screed. A retaining member (48) is disposed to overly the heating element, whereby the heating element is retained in contact with the upper surface of the screed during operation of the paving machine. Electric power is supplied to the elastomeric heating element by a generator (44).

Abstract: A screed assembly has a screed plate that is formed of a material having a thermal conductivity of less than about 25 W/mK, and a thermal barrier material having a thermal conductivity of less than about 0.5 W/mK that substantially covers an upper surface of the screed plate. The low thermal conductance properties of the screed plate obviate the need for auxiliary heating systems to preheat or maintain the screed plate in thermal equilibrium with a paving material.

Abstract: A spreader/grader attachable to a three point hitch of a tractor and including a pair of longitudinally extending, parallel, transversely spaced side pans or frame members oriented in fixed relation to each other and operatively connected to a three point hitch. Extending between the side pans or frame members is a plurality of transverse blades for engaging a soil surface in order to perform various earth working functions.

Abstract: A measuring arm (12) is attached to a frame (5a) supporting a screed (5). Height sensors (13) and (14) are attached to the measuring arm (12), and a height sensor (19) is also attached to the arm (18) of the screed (5). The spacing must remain constant between the rear end of the screed (5) and the height sensor (19), between the height sensor (19) and the height sensor (14), and between the height sensor (14) and the height sensor (13). A distance sensor to calculate the travel distance is provided on the tractor unit (1). The relative height Ho of both height sensors (13) and (14) to the screed (5) must always remain constant, regardless of the tilt of the screed (5) and the measuring arm (12). The sensors (13), and (14), and (17) are connected to the arithmetic unit (30). The height sensor (19) is connected to the arithmetic unit (40). The arithmetic unit (30) receives an output signal from the height sensors (13) and (14) and calculates the thickness of the pavement.

Abstract: A pan drag device is disclosed for attachment to a concrete finishing machine movable longitudinally along an elongated body of poured concrete, with the finishing machine having a finishing unit engageable with the surface of the poured concrete and movable transversely across the body of concrete to grade the concrete. The pan drag device includes support members mounted to and extending rearwardly from the finishing unit and movable with the finishing unit and pan drag apparatus mounted to the support members for engaging the graded concrete surface to finish and seal the concrete surface.

Abstract: A handle attached to a spreader blade housing. The housing supports a spreader blade which spreads the adhesive over a desired surface. The angle of the handle is preferably adjustable relative to the housing. Weights are added to the housing to apply a downward force to the spreader blade, so that a downward force need not be applied through the handle by an operator. The weights are preferably removable, allowing the weight applied to the spreader blade to be adjusted to compensate for different viscosities of adhesive and different application speeds.

Abstract: An improved screed for leveling abrasive paving material on a road surface. The improved screed is attachable to a typical road paving machine using standard mounting assembly and attachment components. The improved screed is highly abrasion-resistant and loses much less heat during shutdown periods than steel screeds because it is formed of a composite that includes a chromium-carbide alloy. The composite is formed of a relatively soft metal that is essentially completely fused to the chromium-carbide alloy. The highly abrasion-resistant alloy, which has a Brinell hardness in the range 550 to 600 and a low coefficient of friction, comes in direct contact with the abrasive paving material and its low thermal conductivity permits it to retain heat during shutdown.

Abstract: An asphalt finishing screed is disclosed which is adapted to achieve essentially complete compaction of the asphalt mix over a range of finished mat thicknesses. The screed comprises a vertically adjustable strike off bar, a rotary compactor positioned immediately behind the bar, and a screed plate positioned immediately behind the rotary compactor. In one preferred embodiment, the rotary compactor comprises a rotor which includes a plurality of freely rotating rollers about the peripheral surface thereof. In operation, the adjustable strike off bar is set at an elevation so as to meter the material to the rotary compactor and to achieve the desired compaction for the particular thickness of the finished mat being laid. The rotary compactor then impacts the mat in an essentially vertical direction and so as to achieve complete compaction of the mix.

Abstract: A paving apparatus has an edger which is journaled on a screed by a hinge. The edger swings out to allow paving material to fill areas beyond the screed which are not part of the primary surface being paved, such as intersecting driveways. The edger is a vertical plate with a horizontal wear plate along its bottom edge. The angle of the wear plate relative to the bottom edge is adjustable to allow for ditches and ramps which are sloped relative to the surface being paved. Movement of the edger and wear plate can be manual or power driven.

Abstract: An improved spreader/grader apparatus having a pair of substantially parallel sidewalls, spaced apart, and supporting at least two spreader/grader blades therebetween. There would be provided a hydraulic or manual adjustment member connected to at least one end of each of the cutting blades, for allowing the one end to be movably adjusted along the length of the sidewalls, so that the blades may be moved from a position substantially perpendicular to the length of the sidewall, to a position angulated therefore, so as to provide a means to prevent material graded to accumulate along the length of the blades, but to slide along the angulated blade and be deposited outside the grader apparatus. The blades are fixed in their relation to the surface itself, and cannot rotate about an axis.

Abstract: A torsionally stabilized automatic grade control system for finishing plastic concrete is capable of controlling a variety of different elongated, multi-section concrete finishing tools such as a vibratory screed or the like, with or without forms. Skis that support the device facilitate sliding, winch driven movement over and through plastic concrete. Spaced apart, vertically upwardly extending towers support the device; they are disposed periodically along the length of the finishing tool. Each tower comprises a pair of extensible, spaced apart stanchions hinged to the skis and disposed on opposite sides of the tool. An upper strut extends between the stanchions. A sleeve coaxially fitted to each stanchion is synchronized with the opposite sleeve by a rigid transverse bridge. The bridge is adjustably coupled to the strut. The upper portion of the stanchions comprises a hydraulic cylinder. Each cylinder is controlled by an adjacent sensor secured to the strut to maintain the attached tool level.

Abstract: The invention is a Concrete Screed Handle assembly which provides a comfortable and stable grasping mechanism for an individual who wishes to put a screed board into a side-to-side motion while advancing it over a wet concrete surface. It is of tubular construction, inverted U-shaped while being used, and has two clamping points roughly shoulder width apart which mount onto the top of the screed board. The clamps on the handle assembly are hand-tightened through threaded bolt/stop assembly which, through a pivoting lever action, clamps the screed board to the handle assembly.

Abstract: Heat exchange tubes are mounted on the upper face of the sole plates of the main screed and screed extenders on an asphalt paving machine. Hot oil is circulated through the heat exchange tubes to preheat the sole plates. The heating system for the oil includes a heat exchanger in the exhaust system of the internal combustion engine for driving the tractor of the paving machine. The heating oil is pressurized by a pump driven by a hydraulic motor supplied with pressurized oil in a second hydraulic circuit from a pump driven by the engine. This second circuit is also used to operated the vibratory mechanisms on the screeds.

Abstract: An applicator for applying seamless flooring material is disclosed. The preferred embodiment includes a chassis steerably mounted on wheels. A hydraulic pump pumps fluid in series through hydraulic motors on the wheels to provide propulsion. A dispensing hopper is supported at the rear end of the chassis with the height of the hopper adjustable on each side. The applicator is part of a seamless flooring material application system, which additionally includes a forklift liftable dumpster, top-fillable with flooring material from mixing apparatus and positionable above the dispensing hopper of the applicator, and bottom-openable to dump the flooring material into the applicator hopper.

Abstract: A screw conveyor in which mixing and flow-directing paddles are selectively adjustable for use on a wide variety of materials having dissimilar flow characteristics. The adjustable paddles are advantageously applied to a screw, or auger, conveyor of an asphalt paving machine to convey a sufficient amount of unsegregated paving material beneath a center drive case or other problem distribution area.

Abstract: A trench paving device releasably secured to the lower lip of an earth moving bucket on a front end loader. The paving device has a pair of opposing vertically disposed and rearwardly converging side plates and a vertically adjustable screed supported between the rear end portions of the side plates. Skids carried by and projecting outwardly from the side plates support the paving device in straddling relation to a trench to be paved. The paving device moves with the bucket and relative to the front end loader in response to operation of a manually operable control system on the front end loader.

Abstract: Heat exchange tubes are mounted on the upper face of the sole plates of the main screed and screed extenders on an asphalt paving machine. Hot oil is circulated through the heat exchange tubes to preheat the sole plates. The heating system for the oil includes a pressure drop across a flow restrictor. The heating oil is pressurized by a pump driven by a hydraulic motor supplied with pressurized oil in a second hydraulic circuit from the tractor of the paver. This second circuit is also used to operated the vibratory mechanisms on the screeds after the screeds are preheated.

Abstract: In accordance with one aspect of the present invention, a modular screed assembly attachment for an asphalt paving machine having a main screed unit, includes a support assembly that is detachably connectable to the main screed unit, a movable carriage slidably mounted on the support assembly, and a platform assembly movably connected to the movable carriage. The modular screed assembly attachment also includes means for moving the carriage between a position adjacent the main screed unit and a position spaced from the main screed unit, and means for selectively positioning the platform assembly elevationally with respect to the carriage.