US2864360A - Road paving machine - Google Patents

Description

Dec. 16, 1958 R. R. LOVE ROAD PAVING MACHINE 2 Sheets-Sheet 1 Filed Feb. 18, 1955 INVENTOR E/cfia/"a E Lara W m, M W

ATTORNEYS Dec. 16, 1958 R. R. LOVE ROAD PAVING MACHINE 2 Sheets-Sheet 2 Filed Feb. 18, 1955 ATTORNEYS United States Patent fiice 2,864,360 Patented Dec. 16, 1958 ROAD PAVING MACHINE Richard R. Love, Buhl, Idaho Application February 18, 1955, Serial No. 489,113

3 Claims. (Cl. 126-2712) This invention relates to improvements in road paving machines, and particularly to a heater for patching roads and streets in cold or wet weather.

This application is a continuation-in-part of applica: tion Serial No. 278,350.

It is an object of this invention to provide a means for repairing holes and breaks in roads which makes it possible to undertake repairing during cold or otherwise inclement weather.

It is a further object of this invention to devise a simple inexpensive device which is of light weight and can be easily moved from place to place.

Another object of this invention is to devise a machine having self-contained heating equipment for heating road surfaces so as to prepare said surfaces for patching and similar repairing.

A still further object of this invention is to provide a machine having means for simultaneously heating road surfaces and material to be deposited in holes, crevices or other faults prior to the placing of said material into said faults, coupled with means for conveniently depositing said material into the faults immediately after heating.

Yet another object of my invention is to provide a readily portable paving machine having a means for conveniently raising and lowering heating means over road areas being repaired.

Another object of the invention is to provide a road patching machine in which the roadway adjacent a hole can be heated indirectly.

According to the invention means are provided for heating roadway surfaces indirectly with a contained heat, that is, heat within a container-like structure. This is especially advantageous in cold windy weather. Further, a flame deflector directs the flame away from the shoulders of the hole or other defect so as not to burn the old or parent oil. No bond can be obtained where the asphalt is burned or scorched. With my invention the shoulders of the hole are heated by radiation.

Another object of the invention is to provide a road patching machine having a shear plate for smoothing a road patch. According to the invention a simple, light device is provided for quickly and efficiently patching roads even under the most adverse weather conditions. Effective, enduring repairs can be made and the patches can be placed quickly and efficiently. The machine provides in a single unit, a road heating means, means for heating patching material, means for depositing patching material in the hole and means for smoothing the surface of the patch.

These and other objects and advantages will become apparent from the following description and the accom- :panying drawings, in which:

Figure 1 is a side elevational view of the road paving machine,

Figure 2 is a plan view,

Figure 3 is a rear elevational view partlyin section and with some parts being removed for clarity of show- 8,

Figure 4 is a side sectional view illustrating the use of the invention,

Figure 5 is a perspective view showing the internal construction,

Figure 6 is a view taken along line 6-6 of Figure 4,

Figure 7 is a side sectional elevational view of a road paving machine constructed in accordance with the invention embodying a heat regulating screen, and

Figure 8 is a sectional view taken along the line 8-8 of Figure 7.

Similar reference characters indicate similar parts in the several figures.

It is particularly difiicult to accomplish repairs on oiled and similarly paved roads and streets during the winter or in wet weather. This is primarily due to th poor bond obtained between a patching mixture and a wet or cold hole. It is common knowledge that patching work done under such conditions does not last. In fact, the usual practice is to defer repairing of such roads until better weather. This, of course, results in holes becoming bigger, more diflicult to fix and more dangerous.

It has long been deemed desirable to have a means of completely and adequately conditioning defects such as holes, and the mixes used in patching them, so that a secure bond will be obtained between the mix and the roadway surrounding such defects. During the winter and during wet weather it is particularly necessary to thoroughly heat the hole and surrounding area of the road to drive out moisture and raise the temperature. If such is not done the patch-work soon crumbles.

It will be apparent from the following description that I have devised paving equipment Which is adapted for use in patching, etc. during inclement weather. The device comprises in general a cart or Wagon which can be readily moved about having a self-contained heating unit for heating simultaneously the roadway and patching materials.

The wagon is adapted to be moved over a hole to be patched so as to heat the bottom of the hole and the roadway in the vicinity of the hole. In addition a tiltable bucket or mix container is provided which is adapted to be heated at the same time the hole is being heated and by the same source of heat. The bucket is further adapted to be tilted upon removal of the wagon from th hole so as to deposit the patching mixture in the hole.

The bucket has a cover which is pivotally connected thereto. A handle is provided in the cover which can be grasped for tilting the cover above the bucket and tilting the bucket to dumping position. Thus, after the hole'is heated the wagon is moved back and the bucket is dumped. Then the mix is spread and tamped into the hole. Next, the wagon can be moved over the hole so that a shear plate forming part of the wagon will scrape the surface of the patch to even it up with the surrounding road surface. Thus, a neat compact patch is obtained. Furthermore, smoothing the surface of the patch renders it less likely to deterioration due to collection of moisture or impacts from vehicles. The ordinary patch is rough and not even with the road. As a result it takes a pounding from vehicles and water can collect around the edges or in the patch itself.

According to the invention I provide a novel wheel supporting arrangement. The wheels are adapted to be retained in either of two positions relative to the repair wagon. In one position the wheels are raised with respect to the wagon and the wagon is adapted to be placed directly into engagement with the road surface surrounding a hole, yet the wagon can be pivoted on the wheels for easily moving it from one hole to an adjacent one.

In another position of the wheels the wagon is sus- 'by the operator. wardly on the mix container while the mix container can be towed without danger of damage.

Referring now particularly to the drawings: In Figure 1 the heater comprises a rectangularly-shaped heat container or furnace 10. The latter is openat both its upper and lower ends 12 and 14. The furnace can be formed of sheet metal. A mixcontainer 16 is mounted above the furnace. This container is shaped complementary to the furnace and is supported thereon. The forward end 18 of the mix container is open. Hinge 20 pivotally connects the mix container to the furnace. The upper ends of the furnace can be tapered slightly as indicated at 22, 24, to facilitate introduction and working of the patching mix.

Hood or cover 26 rests on the sides of the mix container. This cover is pivotally connected to the mix container at the rear by hinges 28. The cover has a hand hold 30 adjacent its forward end. This can be grasped The cover is adapted to pivot rearpivot forwardly of the furnace, as indicated in phantom lines in Fig. 4.

A burner is positioned in the furnace to produce a.

flame therein. The burner is coordinated with means for directing the flame so as to protect the roadway surrounding the hole or other defect from burning due to direct contact with the flame. The latter means comprises flame deflectors. Flame deflector 32 is fastened to the bottom of the mix container, and curves downwardly and to the right as viewed in Figs. and 6. The deflector is in the form of an angle iron curved or bent to the shape indicated and is adapted to receive the flame from the burner, as will be hereinafter described. Curved plate 33 is aflixed to the walls of the furnace and also functions as a flame deflector.

Burner 34 can be any convenient kind of a burner, such as a propane or oil burner. The burner is positioned at the left rear of the furnace and shoots flame forwardly against deflector 32 and plate 33. The deflector 32 is positioned on the left side of the furnace, at its upper end, and curves to the middle of the furnace with the open side of the angle facing the burner. The flame therefore splits with part striking the deflector 32 and part striking the left side of plate or deflector 33. That portion which strikes the deflector 32 will be directed downwardly to the center of the hole, away from the road surface, while that part which strikes plate 33 will be directed in a circular motion around the furnace above the roadway. It is preferred to heat the roadway with radiated heat instead of with direct flame, thus preserving the asphalt or oils of the adjacent roadway. The flame deflector 32 thus directs some of the flame directly to the dirt at the base of the hole or other defect, and deflector 33 causes a circular motion above the hole or defect. The major portion of the road material adjacent the defect lies below the rotating flame and gases within the furnace.

The conduit 36 leads to a tank mounted in a truck used for towing the patching device, or mounted on the heater handle. Figure 1 shows the tank mounted on the handle 37. Tank 38 is supported on frame 40. The frame can be formed of bars 42, 46, and cross braces 48, 50. These are connected to handle 37. The latter is in turn rigidly connected to the burner, as indicated at 54, by welding, for example. Conduit 36 is connected to a valve or pump 56 forming a part of the tank or attached thereto.

Straps 58 and 60 are welded to the handle adjacent the burner 10. These straps are in turn welded to bearings 62, 64. Shaft 66 is pivotally mounted in the bearings. At each of its ends the shaft is welded to axle supports 68, 70. The axle supports in turn support axles 72, 74, on which are rotatably mounted wheels, 76, 78.

The shaft 66 can be rotated to move the wheels from the solid line position shown in Figs. 1 and 4, to the 4 dotted line position shown in Fig. 4. When in the solid line position the burner is adapted to be positioned directly on the roadway surrounding a hole or other defeet. When the wheels are in the dotted line position the burner is raised in position for towing. Stop plates 80, 82, engage handle 37 to limit pivoting movement of the shaft 66.

At its lower rear the burner is provided with a scraping plate or shear plate 84. Bolts and nuts 88 mounted in slots 90 serve to fasten the plate to the burner. The height of the plate can be adjusted by sliding the nuts and bolts 88 in slots 90.

In the form of the invention illustrated in Figures 7 and 8, the deflector plate 32 is not used. Instead a deflector screen 92 is positioned adjacent the bottom of the heater and below the burner. The screen effectively prevents the flame from contacting the roadway, but permits the heat to go through and warm the hole.

In use the heater is towed or otherwise transported to the location where the patch is to be made. The heater can be wheeled adjacent the hole, then the shaft 66 can be rotated to move the wheels to the solid line position shown in Figs. 1 and 4. In this position the heater can be tilted by depressing the handle 37 and the heater moved directly over the defect and lowered. When in the lowered position the furnace surrounds the hole and heat is supplied. At the same time the patching mix is placed in the container 16. The mix can be worked through the open end of the mix container during the heating. When the road and the mixture are sufficiently heated the heater is again pivoted on the wheel axles 72, 74, and moved to the rear of the defect. At this time the handhold 30 is grasped and the heated mixture is dumped into the defeet or hole. It is then tamped into position. Thereafter the heater is again pivoted on the axles 72, 74, and the shear plate 84 is scraped across the ,patch to smooth the upper surface.

The heater can now be moved to an adjacent patch or the shaft 66 can be pivoted to place the wheels beneath the heater. The heater is now adapted to be towed to another location.

While I have shown and described a preferred form of my invention, it will be understood that variations in details of form may be made withoutdeparture from the invention as defined in the appended claims.

I claim:

1. A road paving machine comprising a furnace, means for introducing heat into said furnace, said furnace having an open portion adapted to be placed in close proximity with a road surface and over a depression therein for heating said surface and the depression formed in said roadway, said furnace being formed in part by a container movable with respect to a part of said furnace, said container closing the top of said furnace and functioning as a part of said furnace and being heated during heating of said road surface, said container being movable to a position to dump the materials contained therein into said depression, and a deflector positioned in said furnace in a position to be above said surface during heating of the latter, a burner mounted on said furnace, and positioned to shoot a flame into said furnace, said deflector being positioned to receive the flame from said burner and deflect the flame from said burner away from said surface of the roadway, said deflector constituting a screen extending laterally across said furnace below said burner.

2. A road paving machine adapted for use in repaving defective portions of a roadway, comprising a furnace, means for introducing heat into said furnace, said furnace having an open portion adapted to be placed in close proximity with a road surface for heating said surface, a mix container, said container closing the top of said furnace and functioning as a part of said furnace and adapted to be heated during heating of said road surface, said container being movable with respect to other portions of said furnace into a position to dump materials contained therein adjacent said furnace, and a deflector positioned in said furnace in a position to be above said surface during heating of the latter, a burner mounted on said furnace and positioned to shoot a flame into said furnace, said deflector being positioned to receive the flame from said burner and direct the flame away from a road surface surrounding a'deflected portion of a roadway to be paved, said deflector comprising a screen positioned below said burner, said screen being connected 10 to said furnace adjacent the open portion thereof and extending across said open portion.

3. The apparatus of claim 2 including said container being pivotally connected to said furnace adjacent one end of said container, a cover for said container adapted to rest on said container while the latter is being heated, said cover being pivotally connected to said container adjacent the opposite end of said furnace from said one end of said furnace, said cover extending from said opposite end toward said one end, said cover providing a handle means for grasping by an operator standing adjacent said one end of said container, said cover being pivotal with respect to said container as the latter is pivoted with respect to said furnace for dumping of the contents of the latter.

References Cited in the file of this patent UNITED STATES FATENTS 485,399 Ventzki Nov. 1, 1892 625,711 Stevens May 23, 1899 1,157,297 Cowell Oct. 19, 1915 2,273,254 Davis Feb. 17, 1942 15 2,705,906 Fizzell Apr. 12, 1955 FOREIGN PATENTS 129,998 Australia July 15, 1948 Great Britain of 1912

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