Abstract: A self-propelled apparatus and method are disclosed for screeding placed and/or poured, uncured concrete or like loose, spreadable materials without use of prepositioned guides or rails. The apparatus includes a frame supported on hydraulically drive, steerable wheels, a cantilevered boom mounted on the frame, and a hydraulically driven, auger-type, vibratory screed either fixedly mounted or mounted for movement along the boom to spread and smooth the concrete as the screed is moved toward the vehicle. Screed control means are included for automatically adjusting the elevation of the screed relative to a laser beacon reference plane positioned off the apparatus such that the finished height of the concrete or other material is controlled within close tolerances. Preferably, the boom is rotatably mounted on the frame and also may be extended and retracted to properly position the screed and ease movement of the vehicle around fixed obstacles.

Abstract: A portable screed for working concrete and which is mounted on the user. The screed includes a variable length screed plate, a vibrator for the screed plate, a frame attached to the screed plate, a body harness connected intermediate the ends of the frame, and a balancing weight positioned so that the center of gravity of the screed is essentially coextensive with the center of gravity of the operator. The body harness is adjustable along the frame, and the frame may be adjustable as required to ensure that the center of gravity of the frame is positioned coextensively with the center of gravity of the operator so that the operator is not unbalanced by the screed.

Abstract: A method and apparatus for performing rapid repair of a crater-damaged aircraft runway. The surface level area of the crater is first enlarged to a predetermined rectangular area within which a plurality of concrete tiles of a standard area will fit contiguously to cover the area. The crater is filled with material. The contour of the runway leading up to the area is conformed to by a series of end-to-end scraper blades of widths equal to that of the tiles, the blades are lifted en masse and traveled to an edge of the rectangular area where they are lowered thereinto to a depth below the undamaged surface equal to the thickness of a tile. The device is then traveled to the other end of the area while striking off the fill material to provide a smooth, even surface upon which the tiles are laid.

Abstract: A portable screed for working concrete and which is mounted on the user. The screed includes a variable length screed plate, a vibrator for the screed plate, a frame attached to the screed plate, a body harness connected intermediate the ends of the frame, and a balancing weight positioned so that the center of gravity of the screed is essentially coextensive with the center of gravity of the operator. The body harness is adjustable along the frame, and the frame may be adjustable as required to ensure that the center of gravity of the frame is positioned coextensively with the center of gravity of the operator so that the operator is not unbalanced by the screed.

Abstract: An oil-spreading squeegee for roadway maintenance uniformly spreads oil sprayed onto a roadway surface to be maintained or upgraded. The squeegee assures a surprisingly uniform surface, particularly by filling cracks and moderate depressions in the roadway surface not filled by mere levelling of the liquid oil after a spraying operation alone. The squeegee is towed behind the oil spraying truck, extending across the roadway surface and being maintained on rollers a selected height above the existing pavement. The squeegee pools the oil ahead of its blade while forming a uniform coating on the roadway surface over which the blade has passed. The pool of oil fills cracks and moderate depressions in the roadway surface directly, and thus avoids loss of uniformity in the height of the top of the oil coating. Aggregate is then spread over the roadway and tamped or rolled into the oil, which hardens about the aggregate to form a new, smooth roadway surface.

Abstract: A drag-type road grader including a skewable frame and a plurality of blade assemblies extending transversely across the frame. A tongue assembly is mounted on the frame and includes hydraulic cylinders for skewing the frame to alternative parallelogram-shaped configurations whereby the blade assemblies are angled with respect to the direction of travel. Retractable wheel assemblies are provided for transporting the grader in a non-working mode.

Abstract: An apparatus for forming cross country skiing tracks in a snow covered surface. The apparatus is adapted to be towed behind a vehicle and includes a trailer frame connected to the vehicle in a manner permitting the frame to pivot at least in the horizontal plane. A blade and a ski track device are carried by the frame. The blade is adapted to contact and recondition the snow covered surface, and the ski track device is adapted to form skiing tracks in the thus reconditioned snow covered surface. The blade and the ski track device are each fixed against pivotal movement relative to the frame in the horizontal plane. Thus, the trailer frame, the blade and the ski track device pivot in the horizontal plane as a unit relative to the vehicle.

Abstract: A paving arrangement for coating a base with a self-setting synthetic molding material comprises a rigid frame in the form of a shallow box having an open bottom. The frame is supported by a pair of sleigh members mounted on the lower portion of the frame in spaced relationship from each other so that the frame can be slid over the base. One of the sleigh members is shorter than the other and has its rear end terminating forwardly of the rear end of the longer sleigh member. A hopper is mounted on the frame for storing therein the molding material. A transversely elongate outlet opening is formed at the bottom of the hopper at a position rearwardly of the rear end of the shorter sleigh member and extending in the transverse direction between the inner edge of the longer sleigh member and an imaginary extension of the outer edge of the shorter sleigh member.

Abstract: The asphalt laying machine comprises a rear body divided into sections with smoothing and compacting units suspended through vibration dampers in the frame. Each unit comprises an intermediate part and a smoothing part interconnected by means of a rear shaft bearing and a front connecting rod connected to an eccentric. By virtue of this interconnection an elliptical movement is transferred to the smoothing part during operation of the machine, and this movement produces a heavy tamping at the front edge, a smoothing and vibrating effect at the intermediate area of the ironing plate, and a succeeding tamping and polishing effect at the rear edge area. The tamping foot of a scraper plate suspended on the intermediate part tamps laid asphalt synchronously in opposition to the tamping plate of the ironing plate by virtue of reaction forces transferred through the intermediate part.

Abstract: A self-propelled paving machine has a pivotable steering assembly, a gravity-fed hopper, and is relatively small, thereby specifically adapting it to applications in which high degrees of maneuverability are required, such as for paving sidewalks, golf cartways, and the like. The hopper is designed to permit loading from either side using a wheelbarrow, thus contributing to the suitability of the machine for small paving jobs, and the screed assembly is readily and conveniently adjusted to vary the thickness, width, and configuration of the deposited mat.

Abstract: The invention relates to a travelling finisher apparatus for laying down a road surfacing layer of a bituminous compound material, comprising a first precompacting and levelling screed carried by a frame, and optionally a second levelling screed connected to a vibratory drive arrangement, whereby a particularly high degree of compaction is achieved so that subsequent roller compaction is not required. This is accomplished by providing a vertically guided compactor bar extending transversely of the direction of travel at the rear of the first screed and being of substantially narrower width than said first levelling plank, said compactor bar being continually in contact with the surface of the precompacted surfacing layer and adapted to be acted on by linear pulsating forces acting between the frame and the compactor bar, and generated by a drive source the reaction forces of which are absorbed by the frame.

Abstract: The invention comprises a device which automatically spreads road repair material over a pothole or crack in a road. The device has a spreader which is attached to the rear of a moving vehicle, such as a dump truck, which optionally has a quantity of road repair material stored therein. The repair material is deposited on the road surface either in the crack or pothole or immediately behind it. The spreader then passes over the hole and either smoothes the repair or fills the hold by carrying the repair material into the hole and simultaneously smoothes it over. The device has adjustment means whereby the spreader can conform to the contour or grade of the road to aid in the smoothing process. Use of the device eliminates the manual labor involved in making a road repair, and also accomplishes the repair quicker than has heretofore been possible.

Abstract: An apparatus for screeding and leveling coverings and coatings compounded with a binding agent, more specially a synthetic resin binding agent, is made up of a front straight edge for leveling and a back straight edge for screeding, the two straight edges being joined together as a parallelogram having a driving system for moving them backwards and forwards lengthways. As part of the apparatus there is a track-laying vehicle and a system for vertical adjustment of the straight edges.

Abstract: Screed board apparatus includes a harness to secure the apparatus to a user and handles to allow the user to move the screed board.

Abstract: This invention relates to a device for driving and positioning, by vibration, dowels into concrete slabs during the construction of roads, on both sides of points between said slabs and perpendicularly to said joints, comprising a horizontal beam which is provided with vibrators and with maintaining elements suitable for gripping the dowels and which is carried by an independent frame, so as to be vertically movable by displacement means above a joint, in order to drive said dowels into a lower position in the still unhardened concrete of the slabs.

Abstract: For filling tracks worn in roadways, roadmaking material, preferably asphalt, is simultaneously laid in two adjacent tracks and in the intermediate strip of roadway, for which purpose the old material of the marginal regions of the tracks is replasticized as well as that of the intermediate strip; should the old surface of the intermediate strip be higher than the outer marginal regions of the two tracks, the replasticized material of the intermediate strip is removed to approximately the same level as the outer marginal regions of the two tracks, the removed material is laid in the tracks and, finally, the exposed surface of the intermediate strip is roughened before the new material is laid. Two stripping-laying apparatuses which are arranged at a distance from one another laterally of the working direction serve to fill the tracks and are connected together by a stripping element whose lower stripping edge is level with the front ends of the lower stripping edges of the stripping-layer apparatuses.

Abstract: A combination bull float, hand trowel, groover for use in conjunction therewith, and an elongated handle for attachment with the groover, or the bull float, is provided, with the groover being connectable with either of the bull float or the hand trowel for use in perfecting the finishing of freshly poured concrete. The bull float includes a plate portion having upstanding front and back walls extending upwardly therefrom, with the groover being only slightly longer than the width of the plate portion and incorporating connecting means for fastening it to the bull float, and for providing both a finishing and grooving of the concrete during its working. An elongated handle connects to a bracket upon the bull float, while the groover, if independently used, is also secured through a connector with the elongated handle for facilitating its independent usage for the grooving of finished concrete.

Abstract: A particulate material spreader suitable for spreading asphalt on roadways and other paved surfaces is formed by a bucket which has a back and side walls but no bottom, and arms by which it may be carried at the rear of a vehicle and lifted or lowered by a hydraulic mechanism. Height adjusters at the sides of the bucket hold the lower edge of the back of the bucket at selected height above the roadway whereby a layer of asphalt is metered from the bottom of the bucket as the remainder of a pile of asphalt is raked away by the bucket.

Abstract: A lightweight and portable screen mounts a gasoline engine which drives a vibrating shaft and is adapted with handles for being used in "wet" or "mud" screeding without requiring forms as guide supports.

Abstract: The disclosure relates to a floating screed type asphalt paver provided with extendable, retractable auxiliary screed units which, in their retracted positions, are mounted in front of the main screed and carry edger plates. By mounting the screed extensions in front of the main screed units, it is possible to retract the extension units without interrupting paving operations. A strike-off plate may be positioned in front of the extension units to limit the presence of paving material between them and/or the extension units may be provided with bevelled inner edges for displacing such material during retraction. Novel arrangements are provided for mounting and adjusting the screed extensions.

Abstract: An adjustable screed bar for leveling wet fluid concrete mixtures such as layers of lightweight thermal-insulating concretes cast on rooftops of buildings and the like is described. The device is in the form of a shaft having a screed bar bracket means slidably mounted on one end thereof and a sled runner at the other end. At least two of these devices are attached to a screed bar at spaced apart locations and permit the bar to be pulled or pushed through the wet mixtures at any desired height.

Abstract: A smoothing screed is used with a road finishing machine for setting roadmaking material when the surface of a road pavement, which has been damaged by tracks or depressions worn therein, is renewed. The smoothing screed is of adjustable width and profile and has a central main screed from which adjusting screeds may be drawn out laterally. There is further provided a central ridge profile adjustment device, which allows the central portion of the main screed to be adjusted so as to be lower than the ends of the main screed, and two further adjustment devices at the ends of the main screed, which allow the outer ends of the adjusting screeds to be adjusted so as to be lower than the ends of the main screed.

Abstract: A leveling device for an asphalt finisher or the like including a pair of screeds disposed at front and rear portions of the device on auxiliary frames which are slidably coupled to a main frame. The main frame is pivotably mounted to a pair of supporting arms extending from the vehicle body. The screeds are both movable laterally and tiltable sidewards so that a predetermined depth of asphalt coating can be attained and a crown portion provided if desired.

Abstract: A light-weight, portable and sturdy vibratory concrete screed which may be fabricated in modular fashion from a plurality of interconnected, separable frame units. A framework is provided, having a series of spaced, parallel unitary frame members of triangular configuration, the corners of the base of each frame member being attached to a pair of screed plates and maintaining the screed plates in spaced-apart relationship. Side braces and base braces extend between adjacent frame members for framework rigidity. An eccentric shaft is supported for rotation in bearings mounted in the frame members. The shaft may be symmetrically located in order to impart uniform vibrations to the two screed plates, or may be offset in order to self-propel the concrete screed.

Abstract: A spreader/grader is attachable to a three-point hitch associated with a tractor and includes a pair of curved cutting blades which are adjustable so as to control cutting depth. The cutting blades are mounted between a pair of side runners and include curved cutting edges to facilitate spreading or grading operations. The positioning of the blades is variable both with respect to cutting depth and to angular orientation with the surface being graded through the use of hydraulic ram adjustment mechanisms provided at respective ends of the blades. Both blades may be attached to the spreader/grader so as to present cutting edges directed in the same direction and their respective cutting depths may be varied from each other through the use of the hydraulic ram adjustment mechanisms, or alternatively, one or both of the blades may be positioned with their cutting edges reversely directed from the direction of forward movement of the pulling tractor so as to provide a grading or feathering operation.

Abstract: A texturing broom apparatus for surface grooving freshly laid uncured concrete pavement comprising a traveling horizontal endless conveyor belt having a texturing broom, provided with a row of straight spring steel tines projecting from a base board in spaced apart side-by-side parallel relation, pivotally mounted on the conveyor belt for pivotal movement thereon in a vertical plane parallel to the direction of belt travel with the row of tines extending transversely across and outwardly from the belt and the tines disposed parallel to the longitudinal vertical plane of the belt. Spring means biases the pivoted broom forwardly of the direction of belt travel to a limiting idle position and the broom is supported on the belt in a position with its tines in a trailing working position disposed above and at a shallow working angle of less than about 20.degree.

Abstract: An implement for use with a prime mover, such as a tractor, for applying a uniform coating of a liquid sealant to pavement comprising a plurality of spray tubes for spraying a coating of the liquid sealant onto the pavement and a rotary brush for brushing the sealant onto the pavement and for ensuring that a uniform coating of the sealant is applied to the pavement.

Abstract: A mechanized trowel including a center body of an elongated configuration supported for rotational displacement about its longitudinal axis and having a helical troweling blade extending along the surface thereof adapted to engage, spread and trowel a body of cement in its plastic state, a supporting rail extended in parallelism with the center body supporting the center body for linear displacement therealong, and a truck supporting the end of the rail for translational displacement about a further axis perpendicularly related to the longitudinal axis of the center body and passing through the end thereof opposite the truck, and reversible, electrically energizable motors connected in driving relation with the center body for imparting thereto rotational, linear and translational displacement.

Abstract: This invention relates to road paving machines. Such machines are known in which there is a screed extending across the rear end of the machine and comprising two parts lying one behind the other. One part, the first, is fixed (except that it may be tilted and vibrated) relatively to the rest of the machine and the other part lies behind the first and is slidable along the first to enable the overall width of the screed to be varied. The second part is conventionally one of two similar parts that can be slid in opposite directions outwardly from retracted positions to project beyond the ends of the first part so that when the overall width of the screed is a maximum, the second parts project one from each end of the first.In one form proposed for such apparatus, each second part is carried from the first by two telescopic supports extending in the direction of the width of the screed.

Abstract: The present spreading apparatus for road construction mixtures, such as bituminous cold mixtures, has at least two V- or U-shaped screeding structures or screeds one leading and the other trailing with respect to the working direction. The leading screed extends tandemly, partially into the angle formed by the trailing screed. The leading screed structure has a worm type conveyor connected parallel to each wall of the V- or U-shaped screed. The worm type conveyor assures the homogenity of the road construction mixture and reduces the inherent pressure of the mixture against the leveling elements. Both the leading and the trailing screed are adjustably inclined away from the working direction. The adjustment of the screed position may be made, for example, by a spindle with a hand wheel.

Abstract: A vibrating concrete screed having a motor driven vibrating shaft in an elongated frame mounts at each end of a single or interconnected plural frames a detachable winching unit driven by the shaft through a fluid motor. The screed may be winched automatically, at varying angles, at different speeds at each end and with the winching units performing a screeding function.

Abstract: A snow grooming device for leveling a snowmobile trail comprising a frame having retractable wheels for transporting the snow grooming device and a set of angled blades which direct the snow back and forth across the trail to a leveler bar that directs the snow to a compacter attachment.

Abstract: An upstanding plate adapted for supporting one end of an elongated screed member has a flat bottom edge for sliding movement along a generally horizontal surface at the base of a foundation wall. The upstanding plate is connected to one end of the screed members so as to extend below the screed member and support the screed member above the horizontal surface. The screed member may be received within an open bottomed channel secured to the upstanding plate and the plate may be provided with a leading edge which tapers forwardly and downwardly toward the bottom edge. A second elongated screed member may be supported on the upstanding plate and extended through an opening therein for engagement against the foundation wall. A spacer bar maintains the upstanding plate in spaced relation from the foundation wall.

Abstract: Method and equipment employed on a conventional paver makes a tapered joint between adjacent paved sections. Joint has two wedge shaped, highly compacted, overlying layers.

Abstract: A mounting bar for a road making machine having adjuster bars which are pushable out laterally to adjust the working width and which are arranged behind a main bar. Guide tubes for guiding the adjuster bars for telescopic extension are movably supported on the main bar by connection means for movement in the direction of extension of the adjuster bars. The conection means is arranged between the main bar and an end of each guide tube remote from the adjuster bar.

Abstract: Disclosed is a method and apparatus for recycling asphalt concrete roadways. The apparatus includes means for heating the roadway and applying emulsified asphalt thereto prior to scarifying the heated surface. The surface is then scarified so as to loosen the heated asphalt. The scarified material is then treated with asphalt and, if desired, a rejuvenating agent. They are mixed thoroughly to form a hot mix of asphalt concrete from the old road material. New material is added, and mixed with the old material by a pug mill rotor. The combined rejuvenated hot mix is further mixed and leveled by means of screws and then compacted substantially by a vibrating screed. The screed has a continuous bottom plate and a plurality of relatively movable upper sections which are connected by turnbuckles adapted to be adjusted for bending the bottom plate of the screed to conform to the contour of the road crown. Final compaction of the road surface is obtained by rollers.

Abstract: A device is disclosed herein for simultaneously tamping and leveling concrete and similar materials. The device includes an elongated, rectangular enclosure having a substantially flat bottom for acting upon the concrete or other material. A shaft extends within and is rotatably mounted to the enclosure, and is connected at one end to a motor which is operable to drive the shaft in rotation. Several weights are eccentrically mounted upon the shaft at evenly spaced locations. Preferably several bearing houses are mounted within the enclosure and the shaft is rotatably received therein, each of the several weights being positioned adjacent one of the bearing houses. A handle extends outwardly from one end of the enclosure and the motor which drives the shaft is preferably mounted upon the handle at a location spaced outwardly of the enclosure. The other end of the enclosure may include a handle or may rest upon a stake received within a downwardly open aperture in the enclosure.

Abstract: This invention relates generally to power screed boards or apparatus for leveling, settling and/or compacting material such as concrete. More particularly, it relates to a method and apparatus which can be easily and quickly removably secured to a length of board such as a 2.times.4 or the like to thereby adapt or convert the length of board to a power screed board.

Abstract: An attachment for one side of an asphalt paving machine to permit laying of a gutter adjacent to and integral with a roadway surface at the same time as the roadway surface is being paved. The device comprises an extension plate to be vertically oriented in alignment with the screed of the asphalt paving machine and means associated with the extension plate to secure it in this position. The extension plate has a rearwardly curved, L-shaped base extending from side to side along the bottom of the plate for smoothing the asphalt. An end gate is provided at the outer end of the attachment to control the spread of asphalt to the required width. The attachment is intended to be bolted to an automatic screed extension or to the side of the screed of the asphalt paving machine, to replace the screed end gate.

Abstract: A device for adjusting the working width of a road finisher, comprises a main support beam which is adapted to be carried by the road finisher behind the device for finishing the road surface. The main support beam includes a central plate portion having a pair of tubes secured to each side thereof which extend laterally of the road finisher. An adjustment beam for carrying a ground support for the finisher includes a rod portion extending into each tube and a respective interior and exterior side wall at the respective ends of the adjustment beam. The rod portions are movable in each tube and they are secured on the portion extending exteriorly of the tube to the exterior side wall. The rods are guided within the tube by guide means which bear between the rod and the tube. In addition, the exterior of the adjustment member is guided by second guide means which support the adjustment beam on the exterior of the tubes.

Abstract: A machine is disclosed for finishing the surface of a cast concrete unit supported in a mold frame. Opposed vertical supports on opposite sides of the mold frame are movable on longitudinal tracks, and they support transverse support means which are vertically adjustable. Concrete finishing belts and vibratory means are supported on each transverse support means. The belts on different transverse support means are driven in opposite directions and the vibratory means are separately driven.

Abstract: It is known to utilize a screed extension apparatus along the front surface of a mold board in a machine for spreading pulverulent material such as a paving machine. Such a screed extension apparatus normally includes a strike-off plate and means for mounting and moving this plate between a retracted position generally in front of the mold board and an extended position in which the strike-off plate extends from an end of the mold board so as to serve as an extension of the mold board. Such a structure can be improved by utilizing two housings, the second of which fits around the first in such a manner that the second housing may be moved linearly with respect to the first but is restrained from any other type of relative movement with respect to the first housing. The first housing is secured in front of the front surface of the mold board well above the bottom of the mold board and adjacent to the end of the mold board. The second housing carries the strike-off plate.

Abstract: The method for texturing concrete comprises pouring uncured concrete into a form or upon a supporting surface troweling the concrete to a relatively smooth surface, and moving a texturing pad across the surface. The texturing pad comprises a backing material and a plurality of tufted clusters arranged in a matrix of rows. The clusters each comprise a base attached to the downwardly presented surface of the backing material and a plurality of blades extending downwardly therefrom to engage the concrete while moving there across. Each of the tufts is formed from a plastic material and is of unitary construction.