Abstract: An apparatus, system and method for directionally degrading a paved surface. A substantially cylindrical rotary tool may include cutting inserts embedded within its cylindrical surface. The tool may be rotated about a rotational axis extending from a top end of the tool to its cutting head and may contact a paved surface such that the tool degrades the surface in a direction substantially normal thereto. The tool may be mounted to a motorized vehicle and adapted for independent movement to limit degradation to an isolated area, extend degradation beyond the width of the motorized vehicle, and/or avoid obstacles in the pavement.

Abstract: A comminution machine included in an earth working machine which can be moved over a terrestrial area to be worked in a direction of working comprises a rotating roller comminution device. A grader blade is mounted on the comminution machine down stream from the comminution device in the direction of working.

Abstract: A method and apparatus for working asphalt pavement, comprising one or both of a mechanical, hydraulic, electric, or pneumatic means for providing high-speed rotation; a rotary tool comprising a first end comprising a working surface and a second end adapted for connection to the means for providing high-speed rotation; and a screed, cooperatively arranged with the rotary tool, and comprising a working surface adjacent the working surface of the rotary tool, wherein the rotary tool is spun at high speed and applied to the asphalt pavement, frictionally heating the asphalt pavement to a temperature sufficient to work the pavement locally adjacent rotary tool and the screed. The screed and rotary tool comprising abrasion resistant materials selected from the group consisting of high-strength steel, hardened alloys, cemented metal carbide, polycrystalline diamond, and cubic boron nitride. The rotary tool and the screed apparatus may comprise a closed loop control system.

Abstract: A machine for providing hot-in-place recycling and repaving of an existing asphalt-based pavement, in which the pavement is first heated. Using this machine the heated pavement surface is then scarified, and new aggregate is dispensed onto it, to form a recycled, preheated asphalt and aggregate mixture. This mixture is again heated and scarified to premix it, and a new pavement surface is now milled to grade and width by applying this mixture using a plurality of extension mills having a main frame. The pavement surface is then remilled to grade using a main mill. Rejuvenator fluid is introduced in the main mill of the machine, and mixed with the recycled asphalt and aggregate mxiture. Rejuvenator fluid is also introduced into a pug mill of the machine and again mixed with the recycled asphalt and aggregate mixture. The rejuvenator-enriched, recycled asphalt and aggregate windrow thus formed is then laid to grade using one or more screeds.

Abstract: A method for producing a ready-mix soil material includes the steps of: (a) crushing earth material excavated from a work site; (b) sieving the earth material after crushing so as to obtain raw soil material; and (c) mixing metered amounts of the raw soil material and at least one strength-enhancing additive in an automated manner so as to obtain the ready-mix soil material.

Abstract: A drill bit includes a body defining an axis and first and second cylindrical portions, a coupling adapted for connection with a rotary driver, and a depth stop adjustably secured to a first portion by a plurality of adjusting fasteners in a manner to limit penetration of the bit into a target surface. A method of drilling a hole into the surface includes locating a drilling machine fitted with a drill bit over a target location, compensating for wear on the bit by setting a depth stop to limit travel of the bit at the predetermined depth, drilling at the target location until the depth stop contacts a surface, where the primary cutting surface forms a portion of the hole defined by a first diameter and the secondary cutting surface forms a portion of the hole defined by a second diameter in a single step, and removing the drill bit from the hole.

Abstract: A pavement recycling assembly includes a frame defining a grinding chamber and a mixing chamber. The grinding chamber carries a rotatable laterally-extending toothed grinding drum and the mixing chamber houses at least one toothed rotatable mixing wheel. A screed assembly is disposed behind the mixing chamber for extruding said mixture at a desired height so as to form a pavement. Pavement is recycled in-situ using the recycling assembly by grinding existing pavement, adding fluid asphalt to the pavement, optionally adding supplemental pavement, and mixing the fluid asphalt with the existing and/or supplemental pavement. The mixture is then extruded at the proper height by an adjustable screed. The recycling assembly may be suspended under a self-propelled chassis so that it can be shifted laterally to engage a pavement surface selected for repair without moving the entire chassis.

Abstract: In a stripping means for milling rolls (2) of a construction machine, comprising at least one stripping blade (8) arranged behind the milling roll (2) in traveling direction so as to be adjustable in height, which is able to glide over the surface (3) milled or to be milled by the at least one milling roll (2), it is provided that the stripping blade (10) covers the maximum milling width, and that a mounting means (16) adjustable in height relative to the stripping blade (20) is arranged for at least one lower stripper portion (20) adapted to the respectively used milling roll (2) or milling rolls, the lower stripper portion (20) being able to be positioned, by means of the mounting means (16), in a position corresponding to the milling roll (2) within the width of the stripping blade (10).

Abstract: According to the invention, the surface is dressed by synchronous spreading of binder and gravel on the pavement as follows: a) a first layer of hot bitumen (b1) having a temperature greater than 100° C. is spread on the pavement (S): b) a film of hot water (e) is spread on top of said first layer, c) a second layer of hot bitumen (b2) having a temperature greater than 100° C. is spread on top of said film of hot water; d) a layer of gravel c) is spread on top of all of the above. Pavement dressing.

Abstract: A device for treating soils or road surfaces includes a machine frame (1) carrying a working roll (4) in a working roll housing (8) defining a working space (6). The roll housing (8) is provided with a spraying mechanism (10) for binder or water having at least one outlet nozzle (12) opening directly into the working space (6). A controllable closing device (18) has a closing element (22) which, in an open position, unblocks the outlet nozzle (12) and in a first closed position, closes the outlet nozzle (12). The closing device (18) is capable of triggering an additional movement of the closing element (22) beyond the first closing position such that at a second closed position, material accumulations in and/or beyond the outlet nozzle (12) are removed.

Abstract: In a construction machine comprising a machine frame (2) having a milling roller (18) arranged for rotation therein, the milling roller (18) comprising a roller base body (19) driven by a milling roller drive device (11 to 15) via a transmission unit (32), and a milling tube (25) to be coaxially mounted on the roller base body (19) and to be attached in a manner allowing exchange thereof, with the milling tube (25) carrying cutting tools on its outer surface (46), it is provided that the milling tube (25) comprises fastening elements (28), radially projecting from the inner surface (44), by which the milling tube (25) can be mounted in a rotationally fixed manner to the roller base body (19) or to a member connected to the roller base body (19).

Abstract: In a device for treating soils or road surfaces comprising a machine frame (1) at which a working roll (4) is arranged below a roll housing (8) defining the working space (6), with the roll housing (8) being provided with a spraying means (10) for a binder or water having at least one outlet nozzle (12) directed into the working space (6), it is provided that the at least one outlet nozzle (12) comprises a controllable closing means (18) having a closing element (22) which, in an open position, unblocks the outlet nozzle (12) and, in a closed position, closes the outlet nozzle (12), and that the closing means (18) is capable of triggering an additional movement of the closing element (22) beyond the closing position such that material accumulations in and/or before the outlet nozzle (12) can be removed.

Abstract: A work machine having a frame, a work tool and an articulation apparatus so as to pivot at least one support wheel mounted at the frame from a projecting position to a retracted position and vice versa.

Abstract: A method and apparatus are provided for in situ rejuvenation of asphalt pavement. The apparatus and method provide for heating the underlying surface to form a preheated surface, passing a mill over the preheated surface and milling the preheated surface to loosen the preheated surface to a desired depth and discharging the milled material from opposite ends of the respective windrows of known breadth. Windrow height is measured as is rate of advance of the transport structure to determine a volume throughput. Rejuvenating fluid is added to each windrow at a dosage rate based on a desired weight percentage and the volume throughput. A mixer is passed over the windrows and receives the windrows through respective openings at either end thereof. The mixer also blends the rejuvenating fluid with the milled material and forms a blended mixture which is discharged from the mixer. The mixer may be a pug mill operated in an inverted arrangement utilizing the road surface as a bottom thereto.

Abstract: A mobile rock crusher for crushing raw rock material which has been windrowed on a roadway in the translation path of the crusher includes a rigid supporting structure, which includes a frame, and translation means for allowing translation of the frame over the roadway. A selectively actuable scoop is pivotally mounted to the frame for selectively actuable lowering over the roadway into sliding engagement with, so as to collect, the windrowed raw rock material onto the scoop. A first conveyor is mounted to the frame. An upstream loading end of the first conveyor cooperates with the scoop for conveying the raw rock material from the scoop onto a first screen at a downstream depositing end of the first conveyor. The first screen is for screening larger diameter material from smaller diameter material in the raw rock material so that the smaller diameter material falls through the first screen.

Abstract: Roadway crack sealing apparatus (20) which includes a mobile vehicle (26) with a forward crack sealing assembly (22) and a following finishing assembly (24). The assembly (22) includes laterally spaced apart fill and sealant hoppers (30, 36) each equipped with selectively openable outlets (32, 34, 38) and an elongated roadway crack sighting passageway (128) therebetween. The fill hopper preferably has a pair of outlets (32, 34), with the sealant hopper (38) between the latter so that a crack is sealed by sequential application of fill, sealant and additional fill. In use, an operator within the vehicle compartment (162) visually locates a crack (28) through the passageway(128), and steers the vehicle (26) accordingly; the operator also manipulates appropriate controls for selectively opening the outlets (32, 34, 38). The finishing assembly (24) includes a series of lateral brushes which sweep and finish the sealed crack and adjacent roadway.

Abstract: A device for working road surfaces comprising an automotive running gear (2) with a working roll (4) enclosed by a cover (8) forming a working chamber (6), and a drive motor for providing the power required for driving the working roll (4) and the travel, it is provided that a plurality of adjacent mixing components with foam outlet nozzles (14) for producing foamed bitumen are arranged in an upper portion of the cover (8), hot bitumen supplied from a bitumen reservoir via supply lines (16, 42) and a bitumen injection nozzle (18) together with water supplied from a water reservoir via a water injection nozzle (22) may be mixed under pressure in an expansion chamber (26) of the mixing components, and that the spray jet of foamed bitumen leaving the foam outlet nozzles (14) is directed into the working chamber (6) and becomes mixed into the construction material mixture granulated by the working roll (4).

Abstract: Main bars and cross bars have mated slots. Deformable arms on one set of bars are crimped into openings in the other set of bars at the bar intersections to hold the bars together and make a strong attractive grating.

Abstract: A concrete breaking apparatus includes a wheeled support assembly having an open end to accommodate the variable positioning of an impact roller therebetween and a closed end opposite the open end. A frame having opposing longitudinal arms connected near one end so as to define open and closed end portions is pivotably supported by the wheeled support assembly on pivot arms which connect the frame to the wheeled support assembly. An impact roller is fixedly interposed for rotation between the opposing longitudinal arms of the frame near the open end portion thereof. The impact roller has opposing ends, an axis of rotation through the opposing ends, and a surface equipped with spaced apart primary and secondary impact members traversing the opposing ends of the roller.

Abstract: A method and apparatus are provided for in situ rejuvenation of asphalt pavement. The apparatus and method provide for heating the underlying surface to form a preheated surface, passing a mill over the preheated surface and milling the preheated surface to loosen the preheated surface to a desired depth and discharging the milled material from opposite ends of the respective windrows of known breadth. Windrow height is measured as is rate of advance of the transport structure to determine a volume throughput. Rejuvenating fluid is added to each windrow at a dosage rate based on a desired weight percentage and the volume throughput. A mixer is passed over the windrows and receives the windrows through respective openings at either end thereof. The mixer also blends the rejuvenating fluid with the milled material and forms a blended mixture which is discharged from the mixer. The mixer may be a pug mill operated in an inverted arrangement utilizing the road surface as a bottom thereto.

Abstract: A method and apparatus for controlling the mixing of asphalt aggregate with rejuvenating materials in an asphalt rejuvenating machine. According to the method, milled aggregate is discharged in a windrow of fixed width, and windrow height is compared to rejuvenating machine speed to determine a volume rate of material being processed. A processor controller calculates a required amount of rejuvenating fluid addition based on the volume rate being processed and a desired proportion of rejuvenating fluid to aggregate. The processor controller controls a sprayer which directs rejuvenating fluid at some point along a zone extending from a milling apparatus to a mixer.

Abstract: A blending apparatus which forms part of an asphalt pavement resurfacing machine has first and second stages. The first stage receives milled material through an inlet and blends the milled material with a rejuvenating fluid. The first stage has a transversely extending shaft from which paddles extend radially to blend the milled material with the rejuvenating fluid and direct it toward a first stage outlet. The second stage receives the blended material from the first stage outlet. The second stage has a respective shaft with mixing paddles extending radially therefrom to further blend the material and direct it toward a second stage outlet.

Abstract: A ground working device is formed from a sub-frame having a first side and a second side, plural discs mounted for rotation on the sub-frame between the first side and the second side about an axis that extends from the first side to the second side; and a set of scoops mounted on each disc in ground contacting position. The scoops efficiently lift the ground surface material, which falls to the ground in a sorted manner with coarser material on top. A motor is operatively connected to the plural discs for rotating the discs about the axis. Each scoop in each set of scoops has a ground working face that extends transversely to the disc on which the respective scoop is mounted. The scoops each have concave ground contacting surfaces. Each scoop is received in a respective slot in the disc in which the respective scoop is mounted. The ground working device is mounted on a main frame, which is provided with ground engaging wheels. The sub-frame is retractably mounted on the main frame.

Abstract: In a device for milling off ground surfaces, especially roadways, having a wheel frame carrying a machine frame, a milling roller supported in the machine frame and extending transversely to the direction of travel, at least one conveyor means arranged in front of the milling roller in the direction of travel for removing the milled material, and having a shield arrangement extending transversely to the direction of travel between the milling roller and the conveyor means having a vertical cover plate with a passage opening for the milled material, it is provided that the end, on the side of the milling roller, of the conveyor means is dismountably supported in a belt shoe fixed to the machine frame in a height-adjustable manner, and that the belt shoe and the conveyor means comprise guiding means and coupling means adapted to one another.

Abstract: In a device for working road surfaces comprising an automotive running gear (2) with a working roll (4) enclosed by a cover (8) forming a working chamber (6), and a drive motor for providing the power required for driving the working roll (4) and the travel, it is provided that the cover (8) has means (10) for producing foamed bitumen provided with a plurality of adjacent mixing means (12) with foam outlet nozzles (14), hot bitumen supplied from a bitumen reservoir via supply lines (16, 42) and a bitumen injection nozzle (18) together with water supplied from a water reservoir via a water injection nozzle (22) may be mixed under pressure in an expansion chamber (26) of the mixing means (12), and that the spray jet of foamed bitumen leaving the foam outlet nozzles (14) is directed into the working chamber (6) and becomes mixed into the construction material mixture granulated by the working roll (4).

Abstract: A rotatable implement depth control apparatus consisting of a mounting plate having an upper end, a lower end, a forward face, a rearward face, a right side, a left side, and a lateral axis extending from the right side to the left side, the mounting plate being rotatable about the lateral axis; a rollable trolley, the rollable trolley having a forward end, a rearward end, a right side, and a left side; a rotatable implement carrying frame having a forward end, a rearward end, a right side, and a left side, the forward end of the rotatable implement carrying frame being pivotally attached to the rollable trolley; a rotatable implement having a right side, a left side, and having an axis of rotation extending from the right side to the left side, the rotatable implement being rotatably mounted within the rotatable implement carrying frame; and, a plurality of arms for transferring rotational motion of the mounting plate about the lateral axis to pivotal motion of the frame about the pivotal attachment to the r

Abstract: A method and apparatus for altering an aggregate gradation mixture of an asphalt concrete mixture. The apparatus includes a heater for heating a layer of existing roadway materials, a milling and mixing auger for milling the heated layer of existing roadway materials and a hopper and conveyor for providing a predetermined amount of treated new usable aggregates to the milling and auger for mixing with the heated layer of existing roadway materials in order to produce a new asphalt concrete mixture. The auger including a plurality of milling bits extending therearound for receiving the predetermined amount of aggregates and mixing them with the milled layer of existing roadway materials, the milling bits are slanted to direct the aggregates received thereby and milled layer to a center line of the apparatus. A second auger is positioned along the center line of the apparatus and behind the auger for further mixing the new asphalt concrete mixture.

Abstract: A scarifying blade for use on earthmoving equipment (e.g. a road grader). The lower working edge of the blade has attached to it several spaced rotatable bits, and attached to at least one of the ends of the blade is an end rotatable bit at an angle of about 30 to 60 degrees relative to the spaced bits on the lower edge of the blade. The end bits prevent loosened material from spilling around the end of the blade and they also provide other additional advantages.

Abstract: A variable-width milling drum assembly includes a milling drum having an outer surface. The assembly also includes a plurality of cutting segments removably secured to the outer surface of the milling drum along a first substantially helical axis. Each of the plurality of cutting segments includes a segment flight member. Each segment flight member is positioned in helical alignment with respect to an adjacent segment flight member. The assembly also includes a kicker plate which is secured to the substantially cylindrical outer surface along a second helical axis. The kicker plate is utilized to move cut material in a direction away from the cutting segments during rotation of the milling drum. A method of varying the cutting width of a variable-width milling drum assembly is also disclosed.

Abstract: A method and an apparatus are disclosed for cutting rumble strips in the surface of a roadway. The apparatus is a self-propelled machine which includes a frame and a drive mechanism mounted to the frame and adapted for advancing the machine across the surface of the roadway. The machine also includes a generally cylindrical cutting drum that is mounted on the frame for rotation about an axis that is disposed generally parallel to the surface of the roadway. A plurality of cutting teeth are mounted on the outer surface of the drum in a predetermined pattern, and a mechanism is provided for rotating the cutting drum about its axis. The drum is maintained at a predetermined position with respect to the surface of the roadway so that the cutting teeth will cut into said surface a relatively constant, predetermined depth as the drum is rotated about its axis while the machine is advanced along the surface of the roadway.

Abstract: A vehicular automotive soil treating machine having a main frame structure provided on an automotive drive means to support thereon a soil feeding stage including at least a soil hopper and an additive hopper for feeding soil and an additive soil improving material, a soil processing stage including a soil processing trough which is internally provided with a mixing device for mixing soil and additive material while being transferred from one to the other end of the soil processing trough, and a processed soil discharging stage including a soil discharging conveyer for transferring processed soil of improved quality in a predetermined direction. The soil processing trough is provided with an inlet opening on the upper side of its fore end portion to receive soil and additive material therethrough, and an outlet opening on the bottom side of its rear end portion to discharge processed soil of improved quality toward the discharging conveyer.

Abstract: A device and a method for moving an object are based on the fact that the object (8) is pivotable in relation to a base portion (7) about an axis. There is an arrangement (18) for displacing, during pivoting motion of the object, the object substantially parallel to its pivoting plane for the purpose of causing a point of the object to describe a motion in substantially one and the same plane as a consequence of the combined pivoting/displacing.

Abstract: A compact, easily transportable, surface preparation apparatus which includes a surface treatment unit having a cutter drum powered by its own power source. The apparatus includes transport/support wheels and a tow bar preferably interconnected at each end, of the surface treatment unit the rearward connection being a pivotal connection. The surface treatment unit has a longitudinal axis and a transverse axis, with the longitudinal axis perpendicular to the towing direction and the transverse axis coincident with the towing direction. The cutter drum has a rotational axis and is contained within the surface treatment unit and arranged such that the rotational axis is parallel to the longitudinal axis of the surface treatment unit. The cutter drum is off-set relative to the transverse axis of the surface treatment unit such that the cutter drum operates at one end of the surface treatment unit.

Abstract: A scarifying machine for soil removal having a frame supported by a couple of front wheels and a couple of back wheels, a milling drum is in contact with the soil to be removed and supported by a rotating shaft connected to the frame. A motor is supported by the frame and causes the milling drum and at least one of the wheels to rotate. Each back wheel is supported by an articulation unit that is mechanically connected to the frame and cooperates with a first hydraulic cylinder that is capable of shifting the articulation unit in order to arrange the wheel from a position projecting laterally from the frame to a position re-entering with respect to the frame and vise-versa.

Abstract: A bi-directional surface leveling system comprises a chassis attachable to a motion source and having a hitch, a grader frame pivotably connected to the hitch and supporting a box grader, and a forward frame pivotably attached to the grader frame and having a caster wheel for supporting the chassis. The box grader holds a bi-directional earth grading tool. Also included is a damping assembly attached to the hitch to dampen upward movement of the grader frame. A powered assembly is pivotably connected at one end to the forward frame and at the opposing end to the grader frame, and a control unit connected to the power assembly selectively extends and retracts the power assembly.

Abstract: An anti-clogging or anti-bridging mechanism is disclosed which is structurally arranged to engage the nozzle ports in a cutting housing to seal the ports from pulverized road bed material. The mechanism further includes cable members which facilitate movement of the pulverized material through the cutting housing.

Abstract: A road construction machine for the treatment of roadways, comprising an automotive wheel frame consisting of a steerable frontal wheel frame axle (6) and two rear support wheels (14, 16) independent from each other, comprising a driver's platform (4), for a driver of the vehicle, arranged in the area of the rear support wheels (14, 16) and on a machine frame (8) supported by the wheel frame, comprising a working means (20) arranged in or on the machine frame (8) and roughly flush with the machine frame (8) on one side, namely the so-called zero extension side (24), comprising a driving motor for the driving power required for driving the driving means (20) and for moving the vehicle, the rear support wheel (16) arranged on the zero extension side being pivotable from an exterior end position (26) projecting beyond the zero extension side (24) to a retracted interior end position (28) where the support wheel (16) does not project beyond the zero extension side, provides that the pivotable support wheel (16) i

Abstract: A spreader for spreading treatment products on soil to improve the quality thereof is disclosed. The spreader consists of a vehicle including a frame (103) slidably housing an assembly (105, 106) of a hopper and a metering device. The frame also supports soil shearing means (114) located ahead of the hopper, and mixing means (112) located behind the hopper for mixing together the spread product and the loosened soil. As a result, soil treatment may be enhanced and the nuisance caused by spreading may be diminished.

Abstract: A portable device is shown for transporting asphalt repair materials for use in repairing potholes in asphalt pavements. The device has a body with a hopper compartment for transporting and dispensing asphalt mix materials. A dry, radiant heat source is located below the hopper compartment and heats the asphalt mix. Tack oils are held and dispensed from a separate tack oil tank.

Abstract: The present invention provides a crawler type soil improving machine for efficiently crushing and mixing soft soil and a soil improving agent in order to regenerate such soil, and features excellent mobility and operability. The soil improving machine comprises: a crusher (4), disposed substantially at the center of a vehicle body (3), for crushing and mixing soil and a soil improving agent; a first hopper (40), disposed at one part of the vehicle body (3), for receiving soil; a second hopper (20), positioned between the crusher (4) and the first hopper (40), for receiving soil improving agent; a crawling member (2), arranged under the second hopper (20) and the vehicle body (3); a drive unit (5), arranged at the other part of the vehicle body (3) and including an engine (6) and hydraulic units (9, 10); and a conveyor (50), positioned below the first and second hoppers (40 and 20).

Abstract: A vehicle for repairing a damaged road surface by filling depressions within the road surface with a filling material has, in a direction of travel, a heating and scraping unit for removing excess road surface material from the road surface. It further has a depositing device for a filling material. A first dynamic compacting device is arranged downstream of depositing device for compacting the filling material to a level higher than a level of an adjacent undamaged area of the road surface. A doctor blade unit is connected to the depositing device so as to act downstream of the first dynamic compacting device onto the filling material for removing excess filling material. The doctor blade unit pivots horizontally in a direction perpendicular to the direction of travel. The doctor blade unit is vertically adjustable relative to the first dynamic compacting device and the depositing device. A second dynamic compacting device is arranged downstream of the doctor blade unit.

Abstract: Apparatus and methods for recycling concrete pavement in a coordinated procession include a breaker which turns the concrete into rubble first backhoe which rips up and cuts the concrete to rubble chunks, then another backhoe loads the chunks into a self-propelled crusher. If the concrete is reinforced with metallic structures, the first backhoe cuts those along with the concrete. The crusher separates the concrete from any steel and fines in the rubble. The crusher discharges the steels in collection bins mounted thereon. Various bins and ways of dumping them are disclosed. The crushed concrete is discharged to the roadway as multi-gradated aggregate. The crusher can also be made self-leveling by a slope control, slope sensors, and hydraulic cylinders arranged thereon in a closed loop feedback circuit.

Abstract: In a machine used to refurbish roads, having a driver's cab for one operator, an automotive running gear with two axles (4) and a working roller (8) that is mounted to pivot relative to the machine frame and that is enclosed in a hood (7) which defines a working chamber, and having a drive motor (9) with the necessary output to drive the working roller (8) and to power the vehicle's travel, the invention provides that a drive unit containing the working motor (9) is mounted in a pivoting frame (13) and forms a unit (2) that can be pivoted relative to the machine frame (1), that the working roller (8) is also mounted in the pivotable unit (2) and, together with the latter (2), can be pivoted relative to the hood (7), which has a fixed mounting to the machine frame (1), and that the working roller (8) is directly weighted by the unit (2), virtually the entire machine weight being concentrated between the running gear axles (4) and transferred to the pivotable unit (2).

Abstract: A self-propelled stone crusher includes systems designed to operate the various machine functions by remote control (30), for operating on open ground or inside trenches, collecting and crushing rocks and stones which are then unloaded and levelled behind the machine. The chassis (3) of the machine is hinged to a shaft (11) integral with a crawler support structure (5) so that the machine can be tilted to a greater or lesser extent, depending on the lie of the land, and the crusher has a hammer mill (10) at the front, the perimeter of which is formed by a grid consisting of a number of bars (25), the distance between which varies, depending on the required particle size of the crushed material.

Abstract: A road resurfacing device has a frame on which is mounted a ripper bar for ripping the road surface, to a controlled depth, and behind it a separator for separating coarse and fine material in the road surface such the coarse material is deposited on fine material. The frame is supported by rollers extending across the frame. The ripper bar has depending teeth in rows on both sides of the ripper bar and is rotatable so that either sets of teeth, which may be at different heights, rip the road surface. The separator is formed of ground turning discs mounted on angled shafts to direct material first to one side and then to the other. The ground turning discs rotate counter to the direction of movement of the frame. A method of resurfacing a gravel road includes ripping the surface of the gravel road to break up fine and coarse material near the surface of the gravel road; and separating coarse material from fine material such that coarse material is deposited on top of the fine material.

Abstract: A pavement cutter is provided for attachment to the boom assembly of a conventional backhoe or excavator including an elongated cutting blade having a scoring edge disposed in substantially parallel relation to the surface of the pavement and a cutting edge disposed substantially perpendicular to the scoring edge and wherein a pair of outwardly extending pressure flanges are attached to the blade one on each thereof at a point above the scoring and cutting edges of the blade. The pavement is first scored along a straight line using the scoring edge and then cut along the scored line using the cutting edge of the blade. The pressure flanges on each side of the cutting blade slide along the top surface of the pavement applying a vertical or downward force which prevents the asphalt from lifting and breaking up during the cutting operation.

Abstract: In a process and an apparatus for the stabilization or repair of damaged roads, the road surface is milled off and the material is crushed on the site. The surface material so obtained is added with binders of cement, cement sludge, water and/or bitumen emulsion and/or pre-mixed addition material and/or mineral components of the required grain size and amount, and the material so prepared is again built into the road surface.

Abstract: A modification of a cold milling machine used to remove concrete and asphalt from an existing highway is disclosed, including a milling drum segmented into two or more sections with the drive train for the milling drums passing through the core of the milling drum and supported via a journal or bearing to the outside of the machine. The width of the milling drum can be varied by replacing one section of drum with a segmented drum that is either wider or narrower. The sections of the milling drum can be added by bolting segments of the drum onto a driven sleeve which telescopes over the drive shaft of the machine. The segments of the milling drum can be readily removed by loosening a few bolts and removing the segments without having to slide a milling drum segment off of either end of a drive shaft.

Abstract: A self-propelled pavement remover removes and pulverizes concrete reinforced with steel rod. The machine drives a wedge under the pavement to lift it up and feed it into a hammer mill. The hammer mill pulverizes both the concrete and steel rod into a compact aggregate which is then windrowed along the roadway for enhanced base course or conveyed to dump trucks. The aggregate is then readily hauled away more efficiently than if it were left as large, irregular slabs of concrete.

Abstract: A hammer for demolishing sidewalks and the like comprises a hammer coupled to a backhoe or skid steer loader for actuation thereby. The hammer head is mounted to a main spring which is clamped at one end to a backhoe or the bucket of a skid steer loader. Leaf springs of descending lengths are positioned adjacent the upper and lower surfaces of the main spring and affixed to the bucket or backhoe with a clamp. The springs on the upper surface of the main spring force the main spring downwardly during a hammer stroke initiated by the backhoe or bucket while the return springs force the hammer head upwardly after the stroke. The leaf spring arrangement adds a considerable whipping action to the hammer impact. The bucket is protected from excessive force generated by the whipping hammer head by the damping action of the leaf springs.