Abstract: The invention relates to a mobile device for working and/or moving heaps, preferably stacked in the manner of an embankment, of compostable materials (ricks) or of materials which are suitable for a landfill, comprising travelling gear which can be moved on two tracks, an implement which can be driven in a rotating fashion essentially transversely with respect to the direction of travel within the space between the tracks of the travelling gear, and two clearing apparatuses which are mounted in front of the two tracks of the travelling gear in the direction of travel. Furthermore, the invention relates to a clearing apparatus for clearing material on a track of a mobile device. The invention is based on the object of developing a device and an associated clearing apparatus of the aforesaid generic type in such a way that they can be realized in a particularly compact fashion.

Abstract: An earth excavating apparatus is disclosed as operable to loosen earthen material and expel the loosened earthen material away from the apparatus. One embodiment of the apparatus includes a rotatable drum partially disposed within a housing and having a plurality teeth thereon adapted to loosen earth and direct the loosened earth into the housing as the drum rotates. A discharge fan is further disposed within the housing and is operable to expel the loosened earthen material from within the housing away from the apparatus. The apparatus may be towed by a vehicle and the rotatable drum is adjustable between a vertical transport position and an excavating position of approximately 45 degrees below horizontal. An alternate embodiment of the apparatus includes the drum/fan arrangement of the first embodiment adjustably mounted to a boom arrangement. The drum/fan arrangement may be adjustably positioned on the boom between a transport position and a variety of excavating positions.

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 process for recycling the upper surface of an asphaltic surface. The process includes the steps of: (a) rupturing the upper surface to a depth of at least about 1.5 inches to provide a ruptured upper surface overlying the remaining unruptured portion of the asphaltic surface; (b) heating and mixing the ruptured upper surface on the remaining unruptured portion of the asphalt surface to a temperature in the range of from about 100.degree. to about 350.degree. F. to produce a heated, ruptured upper surface which is substantially free of moisture; and (c) pressing the heated, ruptured upper surface to provide a recycled asphaltic surface. An apparatus adapted for carrying out the process is also described.

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 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: There is disclosed a rock crushing device comprising a frame housing, a rock receiving and crushing chamber having a rotatable rotor, hammers having a generally clavate-shaped profile being releasably engagable with the rotor, mounted to a vehicle such that the crushing device is movable in a plurality of planes to the vehicle.

Abstract: The method for rendering solid waste inert and for its subsequent definitive storage and a plant which allows this to be done, provide an initial stage in which the waste is reduced and/or prepared so that it can be covered then enveloped in substances which can form a coating on it; a second stage involving the mixing of waste prepared in the afore-mentioned manner with a bitumen-based substance; a third stage for the depositing and/or spreading of the amalgam obtained during the mixing stage directly below or above the ground; a fourth stage for compacting the amalgam so that the bitumen-based product solidifies, completely sealing in the waste and increasing its impermeability, thus preventing any contact between the waste and the surrounding environment.

Abstract: A method is shown for recycling asphalt pavement. A high solids lime slurry is prepared by either slaking quicklime or by slurrying dry, hydrated lime. The high solids lime slurry is mixed with crushed aggregate which has been collected by scraping the top surface of an old roadway. The treated aggregate is deposited onto the old roadway and compacted to form a new roadway.

Abstract: The invention relates to the use of a composition which, in a liquid carrier, contains a polymeric hydrogen siloxane (or (H) siloxane) corresponding to the following general formula ##STR1## in which n is a number of from 1 to 70 andR is an alkyl, hydroxyalkyl, aminoalkyl, haloalkyl or aryl radical.The liquid carrier is, for example, water or dichloromethane.

Abstract: A roadworking machine can be converted from front load road planing capability to cold in-place recycling capability by replacing the secondary conveyor on the front end of the machine with a mixer such as a standard pugmill. The machine can be converted in the field simply by detaching the conveyor from a-mounting assembly on the chassis and by attaching the pugmill to the same mounting assembly. The conveyor and pugmill are preferably attachable to the mounting assembly so as to be pivotable with respect to the chassis about both vertical and horizontal axes. The machine as thus constructed permits considerable versatility in both the discharge of milled materials from the secondary conveyor during front load planing and the discharge of recycled materials from the mixer during cold in-place recycling.

Abstract: An automated pavement repair vehicle includes a vehicle and its various computer-controlled subsystems. The various subsystems, including a vacuum system, heating system and spray patch system, for completing pavement repair, are located on the frame and rear of the truck. A robotic cell at the rear of the truck includes an assembly of retractable doors. The doors are lowered around the pothole to allow control of ambient conditions during the pavement repair procedure.

Abstract: A planer assembly is mounted upon a main frame. The planer assembly has a set of blades installed upon a rotable drum. The blades have tips containing deposits of material which abrades hardened pavement. The planer assembly is mounted upon the main frame in a manner that allows the weight of the frame and other components to bear down upon the blade assembly. As the drum rotates, the blades grind paving material from the paved surface. The depth of grinding, or planing, is controlled by the distance between the blade assembly and the surface to be planed. The distance between the blade assembly and the surface to be planed is determined by the distance that is maintained between the frame and the surface to be planed. The distance between the frame and the surface to be planed is adjusted by turning a stationary threaded rod which engages a threaded block mounted upon the axle frame of wheels of the main frame. The axle frame is pivotally mounted to the main frame.

Abstract: A movable asphalt mixing plant which is towed behind a milling machine. The mixing plant includes an input conveyor which receives the crushed aggregate from the milling machine. The aggregate is then introduced into a pug mill carried by the mobile plant. A heated storage tank and appropriate pumps and conduits for asphaltic cement located on the mobile plant allow the asphaltic cement to be mixed with the aggregate in the pug mill. The amount of asphaltic cement added to the aggregate may be controlled by a microprocessor which receives input regarding the production rate and input weight of aggregate. Asphaltic paving material produced by the pug mill is dispensed from the rear of the plant. A heating system employing hot circulating oil is also provided to ensure that the pumps and conduits for the asphaltic cement flow freely. A steering mechanism is provided for the plant to ensure centering for proper reception of aggregate and dispensing of paving material.

Abstract: A multi-purpose apparatus to prepare a road surface is disclosed. The apparatus includes a scoop which cuts, profiles and collects material. A conveyor connected to the scoop transports the material from the scoop to a rock crusher. The rock crusher reduces the size of the rock and deposits the crushed rock back on the road bed. An articulated bucket assembly is mounted on the apparatus to excavate overburden and to deposit the overburden into the scoop.

Abstract: An integrated paver comprising a self-propelled chassis having a paving apparatus, such as a screed, supported on its rear end and a lifting conveyor supported on its front end. The conveyor is capable of picking-up loose paving material laid in the windrow on the road surface. It is pivotally supported on a mounting which is in-turn pivotally supported on the chassis such that the conveyor can be adjusted in two dimensions relative to the chassis. Grade controls on the conveyor control hydraulic cylinders to adjust the tilt and grade of the conveyor relative to the road surface. Alternatively, the conveyor can rest, by force of gravity on runners which slide along the ground and hold the conveyor head a predetermined height (possibly zero) above the ground. Additionally, the runners can be linked to floating break-away scrapers which are maintained at a set position relative to the runners.

Abstract: Apparatus for varying the height of a cutter head on a motor mower vehicle, whereby the cutter head has ground contact wheels and is attached to the motor mower vehicle. The apparatus includes a flexible linkage member which is also able to be extended, thereby enabling the cutter head to follow the contours of the ground being traversed. The cutter head is also able to be pivoted to the vertical position about a pivotal joint between the cutter head and the motor mower vehicle.

Abstract: An asphalt road resurfacing machine includes a heater to soften asphalt pavement by heat, a plurality of scraper assemblies to excavate asphalt pavement, knock excavated asphalt pavement to pieces and mix the pieces evenly, a shaving device to shave the mixed pieces on the road, and a roller to crush and smooth the excavated asphalt pavement to a renovated condition.

Abstract: A road surface conditioning machine having an adjustable height shearing blade, side delivery blades, and an adjustable height striker blade to spread the material cut by the shearing blade and side delivery blades, the leading end of the shearing blade being adjustable in height with respect to the trailing end.

Abstract: A multi-purpose apparatus to prepare a road surface is disclosed. The apparatus includes a scoop which cuts, profiles and collects material. A conveyor connected to the scoop transports the material from the scoop to a rock crusher. The rock crusher reduces the size of the rock and deposits the crushed rock back on the road bed. An articulated bucket assembly is mounted on the apparatus to excavate overburden and to deposit the overburden into the scoop.

Abstract: A method and apparatus for repairing a utility cut in a section of pavement is provided. The method includes the steps of transferring broken pavement and underlying base material from the utility cut, mixing the transferred material with predetermined quantities of water and binder material to form a fluid, unshrinkable, settable filler mixture which is then reapplied to the utility cut. The filler mixture hardens to a set state in a short period of time. All of the operative elements of the apparatus for performing the method are arranged for use directly at the utility cut site. An optional crusher for reducing larger excavated particles to a smaller size and a heater for heating the filler material reapplied to the utility cut may also be employed. Further, the removed material may be separated according to size to exclude particles above a predetermined size.

Abstract: A mobile pavement replacement system (MPRS) is provided for forcibly drawing a flexibly-supported, acute-angled wedge under an existing stretch of a predetermined width of reinforced pavement to initiate removal thereof from the ground below. Gravity-assisted impact hammers apply downward blows of a controlled magnitude and at a predetermined rate onto an upper surface of the reinforced pavement, to crack the same across the entire width thereof over the wedge being driven therebelow. The wedge is flexibly supported, with a predetermined amount of elasticity in the up-and-down direction, so that it essentially "floats" and facilitates absorption of the impact forces by the reinforced pavement to be cracked thereby. Cracked reinforced pavement is subjected to further blows by a hammer coacting with a set of bars transverse thereto, to forcibly render a bulk component of the reinforced pavement into small pieces separated from reinforcement material contained therein.

Abstract: A system for removing and relaying asphaltic concrete pavement using a planer pulling a laydown machine and pushing equipment for (a) screening the cuttings produced by the planer, and (b) mixing the screened cutting, with a suitable binder, wherein the mix is conveyed back to the laydown machine.

Abstract: A road reconditioning plant for excavating an existing roadway and using excavated roadway material for forming a renewed roadway, the road reconditioning plant includes; an excavator capable of releasing existing roadway material to a depth of at least about 25 cm while subdividing released material to form aggregate and a chassis for carrying the excavator for advancing movement along the roadway; a drive for advancing the chassis along the existing roadway; an adjustable leveling jack on the chassis remote from the excavator for positioning the excavator to excavate roadway material to a depth of at least about 25 cm; a housing including a blade member spaced from the excavator for forming a segregating chamber wherein released roadway material can pass in a downstream direction beyond the excavator; a blender for receiving aggregate discharge for the excavator, the blender receives cement and water for forming a binder to be blended with aggregate while advanced rearwardly along the chassis in relation to

Abstract: An apparatus is disclosed for the cold, in-place recycling of asphalt paving of an asphalt roadway. The apparatus is self-propelled, and it includes a cylindrical milling drum mounted at a medial location along its longitudinal length and which serves to remove a thickness of the asphalt paving and break the same into particles as the apparatus moves forwardly along the roadway. The particles are lifted to a separating screen which is positioned forwardly of the drum, and the particles are thereby separated into a first portion of relatively small particles suitable for recycling and a second portion of oversized particles. The first portion is delivered to the rear end of the apparatus where it is mixed with a suitable liquid additive, and then discharged onto the roadway. A following paver then forms the discharged material into new paving. The second portion of oversized particles is discharged onto the roadway at a location in front of the milling drum.

Abstract: A machine is provided for constructing, in particular, redeveloping, the constructional layers of roads, preferably by re-using the old material removed from the road; wherein a receiving silo for the old material, which is mounted on a chassis of a motor-driven running gear, is feedable, preferably in regulatable quantities, to a horizontal stream crusher; said crusher being in connection, via a dosaging conveying device, with a mixer, also mounted on said chassis, whereto additional material components from at least one additional tank or silo, supported on said chassis, may be fed and wherefrom the prepared material ready for distribution is fed, by way of a conveyor worm, to a screed drawn along behind said chassis. Such a machine permits, in addition to the cold recycling of asphalt, also the construction of cold-mix foundation layers as well as a stabilization and a direct distribution of practically any supporting-layer materials.

Abstract: A grinding apparatus for application upon pavement surfaces or the like includes a self-powered, riding machine having one or more grinding heads. The operator is situated immediately above the grinding heads and manipulates the operation of the heads as well as the advancement of the machine, through appropriate controls. The machine includes a bottom frame assembly upon which the majority of the apparatus is mounted. The grinding heads are normally stationary with respect to the bottom frame assembly and are raised and lowered relative the pavement, upon the pivotal displacement of an upper frame assembly which is provided with a forwardmost control arm. This displacement translates as a vertical adjustment of the grinding heads as the bottom frame assembly is raised or lowered. The forward distal portion of the control arm joins with a steerable wheel assembly. Preferably, independent control of the wheel assembly is accomplished by a second, mobile operator.

Abstract: An apparatus and method for delivering asphalt-aggregate material from a plurality of supply trucks to a finishing machine. In a preferred form of the invention the hopper of the finishing machine is modified to have a capacity substantially equal to the capacity of one of the supply trucks. The apparatus is a self-propelled storage vehicle including a hopper having a capacity substantially equal to the capacity of one of the supply trucks, a high capacity loading conveyor, and a high capacity unloading conveyor system. A transversely disposed screw auger is provided for remixing the asphalt-aggregate material in the hopper prior to its discharge to the finishing machine. In the first method of operation the storage vehicle shuttles between the finishing machine and a remote location of the supply trucks and in the second method of operation the storage vehicle travels in tandem with the finishing machine as the paving operation is performed.

Abstract: A method and apparatus for renewing the surface of asphaltic paving at low cost and for immediate reuse. The asphalt surface is heated to about 300.degree.-500.degree. F. The surface is broken to a depth of about two inches and the lower material thoroughly mixed in situ with the broken surface material. After mixing, the material is further heated to fuse the heated mixture into a homogeneous surface. The surface is screeded for leveling and compacted by a road roller. A road machine is disclosed having a steam manifold for heating the asphalt, transversely reciprocating breaker bars having teeth adjusted to the depth desired, toothed mixing cylinders for mixing the broken material, and a second steam manifold for reheating the mixed material. Reciprocating screed bars on the road machine level the mixed and heated material. Final compacting may be done with a conventional road roller.

Abstract: The invention here disclosed comprises a method and apparatus for rejuvenating an asphalt roadway surface resulting in up to approximately three inches of new repaved roadway surface produced at speeds of up to approximately twenty-two feet per minute. The method includes the steps of heating a top layer of roadway, scarifying that heated layer, adding a recycling agent and thoroughly mixing and screeding the road surface to form a recycled material, adding new asphalt mix to the recycled material and milling the combination to form a mixed material and leaving a sub-layer plane in the roadbed. The mixed material is next conveyed away to a paving station located at the end of the process. During this conveying, the sub-layer left by the milling cut is heated, scarified, treated and worked in a manner similar to the treatment performed on the top layer of road surface.

Abstract: The invention provides road planing equipment. A beam which lies substantially horizontally in relation to the ground carries a cutting unit for movement thereon. As the cutting unit moves along the beam, it planes the road surface to a controlled depth. The beam is supported at one end by a bracket which can move a frame transversely of the beam to move the beam laterally. The frame is supported on spaced, extensible and contractible legs. At the other end the beam is supported on a single expansible and contractible leg. Thus, the height of the beam above the ground and the angle of the beam in relation to the ground can be adjusted. The beam can be pivoted to an upwardly directed out of use position.

Abstract: A method and apparatus is disclosed for the removal of layers of concrete, particularly from roadways and motorways. This apparatus includes one or more nozzles located at one end of respective hollow shafts each of which is supported by an articulated joint which is mounted on a movable support. The nozzles are supplied with water by means of a high pressure pump upstream of which there is positioned a preliminary treatment system for treating the water itself. The nozzles are mounted on a movable slide or frame which is controlled by an electronic circuit operable to maintain them at a predetermined height with respect to the surface to be treated. Apparatus is also provided for the elimination of possible hindrances to the free downflow of the water jets against the surface to be treated.

Abstract: In a mining machine (1) designed for underground operation, for example for cutting coal seams, and being equipped with a removal conveyor means taking up the heap of debris in front of the mine face and transferring this heap of debris to a removal conveyor plant (18) arranged behind the mining machine (1), there is interpositioned, separately from the mining machine, between the mining machine (1) and the removal conveyor plant (18) a crushing aggregate (2) comprising its own travel drive and being movable on a chassis in particular being equipped it caterpillars (27). The crushing aggregate (2) comprises a receiving chute (11) provided on a frame (25), a conveyor (12) starting from this receiving chute and extending with its discharge end beyond said frame and at least one crusher roll (13) within the area between the receiving chute (11) and the discharge end (15) of the conveyor (12).

Abstract: A road surface layer reproducing machine is characterized by its rotor unit which is provided with a mixing chamber housing the rotors for scarifying and mixing the asphalt pavement in an atmosphere of a high temperature higher than the temperature of open air to facilitate such a scarifying and mixing operation of the asphalt pavement, which mixing chamber is kept at such a high temperature by the operation of heating means such as a heater and a hot air blower, and is vertically driven through power cylinders.

Abstract: The floor of a poultry rearing area is conditioned for reuse for raising a new batch of chicks, by revitalizing the litter and droppings on the floor of the area. This a accomplished by scraping the litter from the floor with an elongated blade, so that the litter is lifted upwardly into the path of a power driven rotatary pulverizer, which pulverizes the litter and droppings, and permits the so conditioned litter to fall back onto the floor for immediate reuse. The scraper blade is maintained at or slightly above the level of the floor, as the litter is scraped, to avoid damage to the floor.

Abstract: The paved road surface reproducing apparatus consists of first and second self-propelled, steerable working trucks. The first truck is equipped with: a road surface heater; a pair of gas cylinder tables mounted on both sides of the truck which can be raised or lowered by lifts; a hopper for receiving a bituminous mixture from outside; and a conveyor for transporting the mixture form the hopper to the rear part of the truck. The second truck is equipped with: a hopper for receiving the bituminous mixture transferred from the first truck; a conveyor for transporting the mixture received from the hopper to the rear part of the truck; a powdery oil-absorber scattering device to minimize rutting; a small size road surface heater; a scarifier; a softening agent scattering device; and a rotor; and also equipped with a first screw spreader; a first screed; a second screw spreader; and a second screed in tandem at the rear part of the truck.

Abstract: A mobile apparatus which, at a front portion, removes the asphalt top surface and the underlayer of a road and crushes the removed materials to reutilize the crushed materials for redistribution of the crushed material along the road surface at the rear of the mobile apparatus. The apparatus includes a frame equipped with a self-propelled drive assembly. The frame is further equipped with an adjustable shovel, a lift conveyor and a crusher station. The apparatus continuously recovers and processes both an asphalt layer and an underlayer of a road for use as an underlayer in the reconstruction of the road surface.

Abstract: Apparatus for the removal of layers of concrete, particularly from roadways and motorways. This apparatus includes nozzles positioned at one end of respective hollow shafts supported by a ball joint and mounted on movable supports. The said nozzles are supplied with water by means of a high pressure pump upstream of which there are positioned preliminary treatment systems for treating the water itself. The nozzles, moreover, are mounted on a slide controlled by electronic apparatus operable to maintain them at a predetermined height with respect to the surface to be scarified. Means are also provided for the elimination of possible hindrances to the free downflow of the water jets against the surface to be scarified.

Abstract: A tractor-drawn machine reduces a hardened layer of litter on the floor of a poultry house to a pulverized state so that it may be reused on the floor or easily removed therefrom. A leading scraper blade of the machine slightly elevates the hardened litter layer and as the hardened layer traverses grid plates immediately behind the scraper blade, it is acted upon by rotating flail hammers having chopping heads. The pulverized material is discharged at the rear of the traveling machine and is deposited back onto the floor of the poultry house.

Abstract: Fragmented old asphaltic concrete or the like is recycled into new hot-mix by temporarily separating larger pieces from the smaller fragments, generating heat internally within the large pieces with penetrating microwave energy, separately heating the smaller fragments by exposure to hot gas, and then recombining and remixing the separately heated components. The old concrete can be heated very rapidly, highly uniformly and economically while avoiding asphalt degradation and pollution problems that can be caused by exposure to extreme high temperature and while avoiding the relatively high costs of heating the entire volume with microwave energy.

Abstract: An apparatus, to be incorporated into but not limited to a road planer, that would sweep, vacuum material not put onto the existing conveyor by the milling operation, as it now exists. This apparatus would route this material onto the existing conveyors in planing and milling machines. This apparatus may also be added to force feed loaders converting them to street sweepers.

Abstract: A method and apparatus are disclosed for resurfacing the paved area in a continuous operation. The apparatus includes means for planing a surface layer of the paved area to provide crushed particle material of a suitable size. An aggregate dispensing system is included for continuously depositing a predetermined quantity of aggregate onto the area to be resurfaced. A binary dispensing system adds binder to the crushed particle material and the aggregate which is then mixed by mixing system to form a new surfacing mixture at the site. The surfacing mixture is then spread and compacted by a surfacing mixture distribution system in order to form a usable surface layer.

Abstract: A self-propelled pavement lane apparatus comprising a radial-frequency microwave generator extending across one lane of the roadway having an antenna with a slotted waveguide directed toward the roadway for heating a lane-wide stretch of the roadway. A ripping device is provided behind the microwave generator to rip up pavement which was heated by the microwave generator. A screw conveyor conveys the heated and ripped pavement inwardly toward a central axis of the apparatus where it is fed by a chute to a mixing chamber containing counter-rotating mixing blades. Fresh bituminous binder and/or filler may be added to the mixing chamber to be mixed with the ripped pavement which is then discharged from the mixing chamber by a second screw conveyor, to be distributed across the lane. Following the second screw conveyor is a finished plate for initially compacting the refinished surface.

Abstract: The invention relates to a machine for providing milled or peeled road surfaces with a coating, comprising a chassis including a drive motor and having in the front portion thereof a supply or storage container for the material to be applied and in the rear portion thereof a plank-shaped finisher wherein between said supply container and said finisher a mixing device is disposed, which is provided with a first conveyor device feeding the material from said supply container and a second conveyor device feeding the milled-off or peeled material from the ground.

Abstract: The invention relates to a method and apparatus for abrading and recoating road pavements by peeling or milling the road pavement surface which is to be renewed and coating it again, wherein the milled-off material is collected, heated, if desired, and mixed with aggregates, and is then applied as a new pavement. The apparatus for performing this method comprises a peeling or milling unit provided on a chassis, which is preferably automotive, a collector device for the peeled-off or milled-off material and, if desired, an additional road paver for the application of the new road pavement material, wherein in addition to said collector device a mixer is provided, in which the peeled-off or milled-off material may be mixed with the ingredients which are to be used for the renewed application.

Abstract: A process for rejuvenating and recycling used asphalt and a machine including a pugmill mixing chamber for mixing crushed asphalt supplied thereto and for mixing water, calcium oxide and asphalt oil therewith is disclosed. The water and calcium oxide mixture react and chemically combine to form a calcium hydroxide filler material to thus fill the voids and gaps in the rejuvenated asphalt that would otherwise exist. The reaction, being exothermic, increases the temperature of the resultant asphalt based mixture to a level suitable for spreading of the rejuvenated material on a prepared surface. The asphalt oil is preferably preheated using a heat exchanger coil connected to a diesel engine radiator, which coil is immersed in an asphalt oil storage tank carried on the machine so that the viscosity of the oil may be reduced to a reasonable value suitable for pumping to the mixing chamber and spraying on the materials contained therein.

Abstract: A series of treatments are performed on old asphaltic pavement to make it suitable for being satisfactorily applied as a new mat. The old asphaltic pavement is heated and scarified to form a loose aggregate-asphaltic mixture while remaining on the ground surface. The mixture is removed from the ground surface and heated in an elongated rotary housing having heated conductors without direct flame contact with the mixture, and the mixture is then thoroughly mixed with a conditioner for old asphaltic pavement, and finally is reapplied to the ground surface as a new mat. The treatments are carried out by independently operable, portable apparatus during the movement of all of the apparatus in a coordinated train that moves over the ground surface.

Abstract: An apparatus for crushing fragments of asphalt removed from a roadway by a paved roadway planing apparatus includes a grid upon which the fragments are deposited and a crushing tool having a plurality of cutting bits mounted on a rotating drum for movement along circular paths intersecting the grid. The crushing apparatus can be towed behind the paved roadway planing apparatus to receive the asphalt removed from the roadway from the paved roadway planing apparatus and to redeposit the crushed fragments on the roadway.

Abstract: A plurality of rotary cutters for pulverizing soil for a subgrade, a conveyor for moving soil from the subgrade, and a leveling blade are connected successively on a slowly moving machine to prepare in a single pass a subgrade for concrete. Blades on the rotary cutter are revolved horizontally and are set at different levels to slice the soil evenly from the bottom of the subgrade and to pulverize the soil. The conveyor may be either a screw or a chain type, and a portion of the conveyor extends across the subgrade behind the rotary cutters. The leveling blade leaves a desired amount of leveled, pulverized soil, and when a screw conveyor is used, pushes the soil into the conveyor.

Abstract: The placer includes a frame and powered ground traction means at each side. A belt conveyor has a discharge end supported by a swinging arm carried by the frame. The conveyor frame members also translate over flanged wheels such that the conveyor has an extended position where the loading end of the conveyor is on the shoulder or relatively near the ground and the discharge end is above the placer for discharge between the placer frame members to the subgrade. In the retracted position the conveyor is disposed over the placer frame and allows the delivery trucks on the shoulder to pass the placer.