US2257637A - Machine for resurfacing oilsurfaced roads - Google Patents

Description

Sept 30, 1941.

H., E. M ooRE MACHINE FOR RESURFACING OIL-SURFACED ROADS Filed July 1, 1939 2 Sheets-Sheet l mh/ n QQ NN NS mm NN MN sept'o, 1941 H. E. MooRE l 2,257,637

MACHINE FOR RESURFACINGvOIL-SURFACED ROADS Filed .July 1, 1939 2 sheets-snede @y 04? gf/@wwf Patented Sept. 30, 1941 UNITED STATES PATENT OFFICE MACHINE Fon RESURFACING oIL- sURFAoEn noAns Herbert E. Moore, Red Oak, Iowa Application July 1, 1939, Serial No. 282,569

(Cl. 9lfl0) 6 Claims.

This invention relates to improvements in machines for resurfacing oiled surfaced roads, and more particularly to the resurfacing of graveled roads that have previously been treated with a hardening substance wherein it is at times necessary to remove the top hardened surface and relay it, due to the fact that the said surface becomes broken and full of holes.

The object of my invention is to provide a machine or device which may be drawn over the road surface by a tractor or other suitable draft device, and to break up and pulverize the hardened surface and deliver the same to a heating chamber or drum so that the oil and other substances used to harden the surface may be softened and dissolved to permit the material to be pulverized and an additional fluid for hardening the substance added if so desired, and to return the substance again to the ground surface as the machine is advanced over the same, so that the roadbed may'berapidly and cheaply resurfaced and wherein most of the old material may be utilized in the resurfacing of the roadbed.

A further object of my invention is to provide in a machine for resurfacing oiled and graveled roads, and employing a rotatably mounted drum i for heating and pulverizing the old material removed from the roadbed, improved means for mounting the drum wherein it may be maintained atan inclined position relative to thehorizontal, regardless of whether or not the device is being moved up or down hill, and to provide in cqnnection therewith improved means for breaking up and gathering the top surface of the old roadbed and delivering the same to the heating drum.

A further object of my invention is to provide in a device of the class above described, improved means for breaking up or disintegrating the top of the roadbed. A further object of my invention is to provide a resurfacing machine o f the type above described wherein the entire operation of breaking up'the topV surface or crust and delivering the same to the heating drum may be mounted on a single truck, the parts being so arranged and constructed that the truck may be of a minimum length to permit the device to be readily handled on the ordinary road, and yet of such size that a comparatively large amount of material may be handled so that the work may be rapidly accomplished.

My invention consists in the construction, arrangement and combination of the various parts of the device, whereby the objects contemplated are attained, as hereinafter more `fully set forth, pointed out in my claims, and illustrated in the accompanying drawings, in which;

Figure 1 is a side elevation of my improved resurfacing machine; i

Figure 2l is a plan view of the same;

Figure 3 is a detail sectional View taken on the line `3 3 of Figure 2;

Figure 4 is a detail sectional View taken on the line 4-4 of Figure `2, a portion of the frame work being removed to illustrate the cutters for breaking up the top surface and also the scraper for delivering said material laterally, together with the means for elevating and lowering both of said devices;

Figure 5 is a detail sectional view taken on the line 5-5 of Figure 3;

Figure 6 is an enlarged detail diagrammatical View of the delivery end of the scraper and receiving end of the first elevating conveyor, taken substantially on the line 6 6 of FigureV l;

Figure 7 is an enlarged detail sectional view taken on the line 'l-l of Figure l.

My improved device comprises a frame member I0 having side rails II and transversely arranged bars I2, the rear end of the frame being supported by wheels I3, while the front end of the frame is supported by wheels I4 and an axle I 5, the wheels I4 being steered by the usual steering mechanism I6 and a tongue or drawbar I 1. Carried by the members II is an upright frame member I8 having supported on its upper end an oil tank I9;

Mounted in the members II near their rear ends are pivot members 20 supporting transversely arranged channel irons 2I, each end of said irons 2I having upwardly and outwardly diverging brace members 22 adapted to support a frame member 23, one of the brace members 22 being supported with a gear sector 24 adapted to be operated by means of a worm gear mechanism 25, wherein the sector will cause the frame member 23 to be rocked on the pivots 2,0, the worm gear mechanism serving as means for locking the frame 23 in any of its adjusted positions.

Carried by the frame i23 are semi-circular frame members 26 each being provided with rollers 21 rotatably supporting a drum 28, said drum having annular tracks 29 receiving said rollers, the central portion of the drum 28 being provided with an annular gear rack 30 designed to Ibe driven by means of a spur gear 3| mounted on the shaft 32 supported by the beams 2|, the gear 3i providing means whereby the drum may be rotated by means of the shaft 32 and a sprocket 33 and a chain 5I, in the manner hereinafter made clear.

Supported within the drum 28 is what I shall term a mixing drum 34, having an annular space 35 between said drums in which a flame 38 from an oil burner 31 may be projected for the purpose of heating said drum 34. Supported longitudinally through the center of the drum 34 is a mixing shaft 38 having mixing blades 39, the ends of the shaft 38 being supported by bearings 48 and 4I carried by the ends of the frame 23. The back end of the shaft 38 has a sprocket wheel 42 by means of which the said shaft may be rotated, and with it the mixing and pulverizing blades 39.

Supported longitudinally beneath the frame I is a shaft 43 having a sprocket wheel 44 on which is mounted a chain 45 (see Figurel), said chain 45 being mounted on a sprocket 45 carried on the rear end of a shaft 41 extending longitudinally above the frame members II and terminating near their forward ends, the front end of the shaft 41 being driven by means of a belt 48 from an engine 49, thus providing means whereby the shafts 41 and 43 are driven. They shaft 43 is provided with a sprocket 59 on which is mounted a chain 5| passing over the sprocket 33 (see Figure 5), thus providing means whereby the' shaft 32 may be driven, and with it the sprocket 33 and the drums 28 'and 34.

' Supported on one side of the frame member 23 is a shaft 52 having near its central portion a spur gear 53 adapted to mesh with the gear 38, thus providing lmeans whereby the shaft 52 may be rotated. The rear end of the shaft 52 is provided with a sprocket 54 having a chain 55 passing over the sprocket, 42 mounted on the rear end of the shaft 38, thus providing means for driving the said pulverizing and mixing shaft 38 and the blades 39.

Pivotally supported to the back side of the axle I5 is a frame member 51 having Ymounted therein a shaft 58 onY which is mounted a series of flat discs 59. For raising and llowering the free end of the frame 51 I haveprovided a worm'gear mechanism 80 having a crank shaft 6I on which are mounted cranks 62, each of the cranks 62 being provided with a downwardly extending link 63 pivotally connected'to one side of the frame member 51, the said worm gear device 60 having a crank shaft 64 by means of which the worm 65 may be rotated and the shaft 8| operated. This provides means whereby the discs 59 Vmay be elevated or lowered, and also provides means whereby downward pressure may be applied to the discs so that substantially the entire weight of the front end of the frame I8 may be carried by said discs, thus providing means whereby the discs maybe caused to enter the very hard top surface of a gravelled road, causing the said top surface to be sliced and otherwise loosened.

. It is sometimes desirable to rotate the discs 59 as they are being advanced through the earth, and torotate the discs in an anti-clockwise direction as viewed in Figures l and 4. To accomplish rotation of the discs I have provided on the shaft 58 a bevel gear |93 which is in mesh with a bevel gear |84 mounted on one end of a shaft |85, the other end of said shaft being provided with a bevel gear |08 meshing with a bevel gear |61 ,mounted on a transversely arranged shaft |88 passing through the pivot center of the frame 51. The shaft |88 is driven by means of a bevelgear |89 mounted on the shaft 41, which is in mesh with a bevel-gear I |8 mounted on the upper end of a shaft I I I having a bevel-gear I I2 on its lower end, said bevel-gear meshing with a gear II3 on the shaft |88, thus providing means whereby the discs 59 may be rotated when so desired, to assist in cutting the hardened surface and also for lifting small stones and similar substances out of the hardened surface rather than tending to force them into the surface as would be the case if the discs were rotated in a clockwise direction or having their peripheries travel with the surface as the discsare advanced. The

rotation of the discs also tends to produce a drawcut effect. Suitable means not shown is provided for causing the discs to become operative or inoperative at the will of the operator.

A burner II4 is provided for heating the tank I9, if so desired, and an additional fuel tank II5 is provided for supplying fuel to the burner II4.

Supported in the frame members II, back of the discs 59, I have provided a shaft 6B on which is'pivotally mounted beams 81, said beams being adapted to support a scraper blade 88 which is designed to -be moved back of the discs 59, and to cut loose and gather the material loosened by said discs, and to convey it transversely to the inner end 89 of the blade 68, the outer end of the bladel 58 being provided with a forwardly extending partition or plate 18 for the purpose of preventing material gathered by the blade 68 from passing around the outer end of the said blade.

A worm gear 1I and a worm 12 provide means for oscillating a rock shaft 13, having links 14 connected with the beams 81. A shaft 15 provides means for actuating the worm 12 by means of a crank 18. Thus means is provided for raising and lowering the blade 68, also for applying pressure to said blade if so desired.

Supported adjacent to the delivery end 69 of the plate 68 I have provided an elevating conveyor 11 operated from a shaft 18 at its upper end, said shaft being driven by means of a sprocket wheel 19, a chain 88, which in turn is driven from a sprocket 8|, and mitre-gears 82, one'of said mitre-gears being mounted on the shaft 41. A link 83 is provided having one end connected to the inner one of the beams 61 and the other connected to the inner side of the conveyor 11, the upper end of said conveyor 11 being pivotally mounted about the shaft 18 so that as the beams 61 are elevated and lowered, the lower end of the conveyor 11 will also be elevated and lowered, the lower end of the conveyor 11 being so located as to gather up material from the inner end of the blade 68.

The inner end of the frame 23 is provided with upwardly and forwardly extending brackets 84 having pivotally mounted in their upper ends a conveyor 85, the lower end of said conveyor 85 being pivotally connected to links 86 carried by the frame members II. A trough 81-is provided for conveying material from the upper end of the conveyor 11 to the lower end of the conveyor 85, a trough 88 being provided for conveying inaterial from the upper end of the conveyor 85 to the interior of the drum 34. The conveyor 85 is driven from a shaft 89 rotatably mounted in the upper end of the brackets 84. One end of the shaft 89 is provided with a bevel-gear 98 designed to mesh with a bevel-gear 9| carried by one end of a shaft 92, the other end of the shaft 92 hav-A ing a sprocket 83 carrying a chain 94 driven from a sprocket 95 supported on the forward end of the shaft 52. Thus, means is provided for driving the elevating conveyor 85.

Since the lower end of the conveyor 85 is pivotally supported on the links 83 it will readily be seen that the frame 23 may be tilted, and when so tilted a slight longitudinal movement will be imparted to the said conveyor 85, at the same time permitting the conveyor to always be in operative relation with the drum 34 when `in any `of its inclined positions of `rnoveinent.

`of the drum 34 to convey it transversely to one side of the machine if so desired,th`e conveyor being operated by means of a belt from the shaft 43, the conveyor 99 being carried by brackets lll! which are detachably connected with the frame members Il by bolts H12 in such a manner that the conveyor 99 may be removed if so desired, and when removed, material from the drum 34 will be delivered directly to the ground surface beneath the rear end of the drums 34 and 2'8. K

By this arrangement it will be seen that I have provided means whereby the hardened top surface of an oiled or otherwise treated gravelled road may be sliced or cut by means of the discs v59, then scraped and gathered and moved inwardly to thelower end of the conveyor 11 where it will then be elevated upwardly and forwardly, and thence delivered transversely by the trough 81 to the lower end of the conveyor 85, and further elevated upwardlyand rearwardly and delivered to the trough 88, and from there to the interior of tfhe drum 34, this'drum being eontinuously rotated in one direction, either with or -witl'iout heat applied into the space 35k., The blades 39 are also continuously rotated to break` up and pulverize chunks of material delivered to the drum, the application of heat greatly assisting in the disintegration of the lumps so that the material delivered at the rear end ofthe drum 34 will be mixed and jhe'ated inthe proper condition to be again appliedto the road surface. This material may be delivered directly to the ground below the discharge end of the cylinder, or it may be conveyed to one side of a road, if so desired, at which timeadditional ni'shing material may be added if it is deemed necessary, after which the material may then be spread in the usual manner. y

The worm gear mechanism 25 provides means whereby the inclination of the drum may be varied so as to control the rate of flow from the forward end of the drum to its rearward end at the will of the operator, and regardless of `whether or not the machine is being advanced un or down hill, thus providing means whereby the speed of the advance of the material through the drum may be accurately controlled so that the material will receive the desired amount of mixing and pulverization before being delivered to the ground surface.

By providing a forwardly and upwardly inclined conveyor and a rearwardly and upwardly inclined conveyor I have provided means whereby the length of the entire machine may be considerably decreased over what would be necessary if the entire conveyor extended in one direction, and provides means whereby the cutter 5.9 may be operated near the front end of the conveyor and the gathering and scraping near the central porframe, means for locking said frame tion of the frame, whichV I nd to be a very desirable arrangement.

I claim as my invention: g

1. In a device of the class described, the combination of a portable frame, an auxiliary frame pivotally connected to the portable frame and extending rearwardly of its pivot member, a. transversely arranged shaft carried by therear end of said auxiliary frame, a series of flat discs carried by said shaft, means for elevating and `lowering the rear vend of said auxiliary frame, said elevating and lowering means including means for applying pressure to said discs, a scraping blade supported back of `said disc adapted to gather material sliced by said disc and to 4convey it transversely to one end of said blade, means for raising and lowering said blade, a` mixing chamber, means for pulverizing material withinV said mixing chamber, means for applying heat thereto, and means for delivering material from the delivery end of said scraper to the inner end of said mixing chamber. l

2. In a device Vof the class described, a portable frame, a drum-supporting frame pivoted to swing about a transverse axis in either direction past a normal inclined position, a pulverizing and heating drum open at each end, the upper end being adapted to receive scariiied Vmaterial from the road bed 'over which the, frame is advanced, to be reconditioned thenein, means supporting Said drum on said drum-supporting lframe to` rotate about a longitudinal axis, a mixer within said drum, manually operated means carried by said portable frame for tilting the drum-supporting e to one of a number of adjusted positions whereby the longitudinal angle of the drum may be tilted in opposite directions relative to a normally rearwardly and downwardly inclined position to regulate the flow of material longitudinally through said drum by gravity as it is rotated, regardless of the inclination of the road bed over which the machine is advanced, means for rotating said drum, and means for actuating said pulverizing means.

l3. In a road resurfacing machine, a portable frame, a tiltable Vdrum-supporting frame carried thereby, a longitudinally arranged pulverizing and heating drum Open at each end to provide receiving and delivery ends carried by said tiltab-le `frame to permit material to be passed continucusly therethrough as the drum is rotated about its longitudinal axis, manually controlled means for tilting the angle of the longitudinal axis of said drum in opposite directions from a normal inclined position relative to the horizontal, to regulate the rate of flow of material through said drum by gravity, regardless of the inclination of the road bed over which the machine is advanced, scarifying means adjustably mounted on the front-end of said frame for loosening the top portion of the road bed over which the machine is advanced, an inclined scraper blade supported at the rear end of said scarifying means, an upwardly and rearwardly inclined conveyor having its outer end pivoted to and carried by said portable frame and its upper end supported to deliver material into the receiving end of said drum, conveying means operatively connecting the upper end of said inclined conveyor with the drum supporting frame to cause the delivery end of the conveyor to be maintained in operative relation with the drum at all times when the drum is at any one'of its tilted positions of movement, a second conveyor carried by said frame `extending downwardly and rearwardly from a t position near the road bed to receive scariiied l material from the delivery end of said earth inclined scraper blade conveying means for delivering material from the second conveyor to the rst conveyor, means for driving said conveyors as the machine is advanced, whereby the loosened material may be delivered to and through said `pulverizing and heating drum and again to the road bed, in a continuous manner.

4. In a road resurfacing machine, a portable frame, a tiltable drum-supporting frame carried thereby, a longitudinally arranged pulverizing and heating drum open at each en-d to provide receiving and delivery ends carried by said tiltable frame to permit material to be passed continuously therethrough as Ithe drum is rotated about its longitudinal axis, manually controlled means for tilting the anglev of the longitudinal axis of said drum in opposite direction's from a normal inclined position relative to the horizontal, to regulate the rate of flow of material through said drum by gravity, regardless of the inclination of the road bed over which the machine is advanced, soarifying means for loosening the top portion of the road bed over which the machine is advanced, an inclined scraper blade supported by said frame for gathering said scariiied material; an upwardly and rearwardly inclined conveyor having its outer end pivoted to and carried by said portable frame and its upper end supported to deliver material into the receiving end of said drum, conveying means operatively connecting the upper end of said inclined conveyor with the drum-supporting frame to cause the delivery end of the conveyor to be maintained in operative relation with the drum at all times when the drum is at any one or" its tilted positions of movement, a second conveyor carried by said frame extending vdownwardly and rearwardly from a point near the pivoted end of the first conveyor to position near the road bed to receive material from the delivery end of said scraper blade, conveying means for delivering material from the second conveyor to the Iirst conveyor, means for driving said conveyors as drum by gravity may be regulated at the will of the operator. Y

5,. In a device of the class described, the combination of a portable frame, an auxiliary frame pivotally connected to the portable frame and extending rearwardly of its pivot member, a transversely arranged shaft carried by the rear end of said auxiliary frame, a series of iiat discs carried by said shaft, means for elevating and lowering the rear end of said auxiliary vframe, said elevating and lowering means including means for applying pressure to said discs, a scraping blade supported back of said disc adapted to gather material sliced by said disc and to convey it transversely to one end of said blade, means for raising and lowering said blade, a mixing chamber, means for pulverizing material within said mixing chamber, means for applying heat thereto, and means for delivering material from the delivery end of said scraper to the inner end of said mixing chamber, and a conveyor carried by the delivery end of the supporting frame for conveying material delivered from said drum to one side of a road bed as the machine as advanced.

6. In a device of the class described, a portabler frame, a drum-supporting frame pivoted to swing about a transverse axis, a pulverizing and heating drum open at each end to receive material at one end and deliver it to the other end, means supporting said drum within said drum-supporting frame to rotate about a longitudinal axis, a pulverizer within said drum,` manually operated means carried by said portable frame for tilting the drum-supporting frame and the drum carried thereby, means for locking said frame to one of a number of tilted positions whereby the-longitudinal angle of the drum may be varied to regulatethe flow of material through said drum by gravity as it is rotated, scarifying means adjustably supported by the front end of said frame, an inclined blade supported at the rear of said scarifying means, and an elevating and conveying means carried by the portable frame for delivering the scariied material from-the scraper blade to the inlet end of the drum, whereby Inaterial may be loosened from a road bed and delivered continuously to said-mixing drum at any of its adjusted inclined positions of movement, and whereby'the rate of flow of material through said drum by gravity may be regulated at the will of the operator, regardless of the inclination of the road bed over which the machine is advanced. v c

l HERBERT E. MOORE.

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