US1978773A - Asphalt spreader - Google Patents

Description

39,, 1934. J TRANT, JR 1,978,773

ASPHALT SPREADER Filed March 1, 1935 4 Sheets-Sheet l JZZTnanZJzR aftozwj Oct. 30, 1934. J -r JR 1,978,773

ASPHALT SPREADER Filed March 1, 1935 4' Sheets-Sheet 2 Oct. 30, 1934. I H, -r j 1,978,773

' ASPHALT SPREADER Filed March 1, 1933 4 Sheets-Sheet 5 mmm 0st. 30, 1934. J. H. TRANT, JR

ASPHALT SPREADER 4 Sheets-Sheet 4 Filed March 1, 1933 Patented Oct. 30, 1934 UNITED STAT ES revenue ASPHALT SPREADER John H. Trant,

J12, Norfolk, Va.

Application March 1, 1933', Serial No. 659,223

4 Claims.

This invention relates tonew and useful. im-

provements in. road surfacing machines; and particularly to machines for laying and spreading surfacing. materials, such as asphalt.

One: object of the present invention is toprovide a machine of this character by means of which" surfacing material, such as asphalt, may be properly and eificiently comminuted, and then spread: onto the surface of. a road, to the'desired depth; 1

Another object is; to provide means by which the asphalt. may be properly spread to the depth desired, and at the same time smoothed over the surfaceof the roadtoconform with" the crown, or

18$ transverse: curvature thereof.

A further object is to provide a device of this character which includes novel and eflicient means for working. the surfacing material. across the road; and thinning out theedges thereof.

character by means. of which the above-named operations: are carried on automatically, as the truck, which contains the; supply of surfacing material; proceeds along. the road.

Other obj ects: and advantages will be apparent from the following description when taken in con-- nection with the accompanying drawings.

In the drawings:

j Figure: 1. is a sideelevatiorr of the invention, shown. attached to the rear end. of. a truck containing. the surfacing material.

Figure 2. is a top plan. view of. the distributer; Figure 3- is-aside: elevationof the distributer.

Figure 4. is a. vertical sectional view onthe line 3'5; ls-4.0151 Figure 2..

Figure. 5 is a. rear elevation of the distributer. Figure. 6. is a. top. plan view ofthe smoother and levelen .Fi'gure '7 is a side elevation of the. smoother and leveler.

Figure 8 is an enlarged vertical sectional view on the line 8'-8 of Figure 6.

Figure 9 is an enlarged vertical sectional view on the line 9 -9- of Figure 6, showing the means for adjusting the leveling and scraping blades;

Figure 10* isa. transverse sectional detail view on the: line 10-10 of Figure 6.

Figure: 1.1 is a vertical sectional: view on the line 11=-11 of: Figure 10:.

Figure 12 is an enlarged side. elevation of a portion. of the rear end of the smoother and level'er.

Figure 13 is a detail view showing the" means for accomplishing the vertical adjustment ofthe frame of the smoother and leveler.

A. further object is to-provide'a device of. this Figure 14; is an enlarged top plan view of a portion of the rear end of the smoother and leveler, showing the means for reciprocating the smoothing brushes.

Figure 15 is an enlarged rearelevation of a portion of the rear end of the smoother and leveler, also showing the brush reciprocating means.

Figure 16 is an enlarged vertical sectional view on the line 16-16 of Figure 6.

Referring particularly to the accompanying drawings, 10 represents a portion of a truck, which is adapted to contain the surfacing material, such as asphalt. Connected to the. rear of the truck, by means of the links 11, is the spreader and. distributer, represented as a whole by the numeral 12;. i

The distributer 12 consists of the end frames 13, eachcomprising the forwardly and rearwardly diverginglegs 14, each of which legs is supported on a ground wheel 15, carried by an end of the axle 16, supported on the lower end of said legs, and extending transversely of said distributer. Transverse braces 17, connected at their opposite, ends to the end frames, serve to hold the said frames in proper spaced relation. In the upper portion of the distributer is supported a hopper 18, having the upwardly extending mouth 19, into which material is shoveled, from the truck, while the lower portion of said hopper consists of a drum 20, extending transversely of the distributer frame. Mounted within the drum is a cylinder 21', the ends of the shaft 22, of which, are journaled in the end walls of said drum. Secured to the outer face of the cylinder, and radiating therefrom, are the pins 23, which cooperate with the rows of stationary pins 24, mounted within the drum, adjacent the lower discharge opening of the hopper. Mounted beneath the discharge opening of the hopper, and extending transversely of the distributer, is a downwardly and rearwardly inclined mouth 25, which receives the comminuted material from the hopper, and discharges the same onto the road surface.

Connected to the rear side of the distributor is the smoother and leveler, designated, as a whole, by the numeral 26. The smoother and leveler comprises a frame consisting of the longitudinal parallel beams 27, connected at their front and rear ends by the transversely extending bracing and spacing bars 28 and 29, respectively. Extending transversely of the intermediate portion of the frame 26, and journaled in bearings 30, on the side beams 27, is' an axle 31, on each end of. which, outside of the frame, is mounted a ground Wheel 32. Each of the said bearings is adapted to be raised and lowered by means of the adjusting screw 33, whereby to raise and lower the frame, with respect to the surface of the road.

Extending diagonally between the side beams 27, from a point adjacent one end of the axle 31, to a point adjacent the opposite front corner of the frame, is a scraper blade 34, the intermediate portion of which is connected with a horizontal plate 35.. Extending diagonally from the other front corner of the frame, to said plate 35, is a short bracing strip 36, while a similar bracing strip 37, extends from said plate to a point adjacent the other end of the said axle. It will be noted that the rear end of the scraper blade 36 terminates a short distance from the side beam 2'7, whereby to provide an opening 36, between said blade end and the side beam, to permit the material ped by said blade, to 0 Off a the sprocket wheel 56, is a drive chain 65, by

means of which motion is transmitted from the blade end and move rearwardly therefrom. Rearwardly of the axle 31 is arranged a plate 38, similar to the plate 35, and secured to this plate are the inner ends of the short diagonal braces 39 and 46, extending respectively to a side beam 27, adjacent the outer end of the short brace 3'7, and to theopposite rear corner of the frame.

Extending from the other rear corner of the frame, diagonallyto a point adjacent the other end of the scraper blade 36, is a scraper blade 41,-

the intermediate portion of which is connected with. said. plate 38. Extending transverselyof the frame, and having theirends connected respectively to the plates 35 and 38, and to the side beams 27, are the braces 42 and 43. Inthe side beam 2'7, adjacent the outlet or rear end of the scraper blade 41, is an opening 44, through which the material escapes, after having been scraped by said blade. Each of the scraper blades 36 and 41 is mounted in suitable guides, shown at 45,0n the side beams 2'7, andladjustable vertically by meansof the screws 46, whereby to regulate.

the position of said blades with respect .to the surface of the material on the surface of the road. Secured at their, ends to the forward ends of the side beams 27, and extending transversely of the frame 26, are the bars 47, to each of which are secured the downwardly extending spring raker teeth 48, for raking the surfacing material as the latter. is deposited on the surface of the road.

Mounted on the rear ends of the side beams 27, and extending 'rearwardly therefrom, are the brackets 49. Mountedon each of thesebrackets 49, and extending in parallel relation to each other, in transverse arrangement across the frame, are the depending guides 50. Slidable transversely of the frame, and supported in transverse pairs of said guides, are the heads 51 of elongated brushes 52, said brushes being adapted to engage with, and reciprocate across the surface of the surfacing material, for the purpose'of smoothing and leveling the same, as the machine proceeds along the road. 7

Mounted on one of the side beams 2'7, adjacen the rear end thereof, is a bearing bracket 53,

; which supports a short transverse shaft 54, hav-.

ing'a bevel gear 55, on its inner end, and a sprocket wheel-56, on its outer end. Mounted on the rear transverse member -28, of the frame 26, is a similar bearing bracket 5'7, which supports a transverse shaft 58, arranged at right angles to the shaft54, said shaft 58 having a bevel gear 59, on its inner end, meshing with the bevel gear 55, and on its outer end a crank arm 60. Pivotally connected with the crank arm 60 is one ,end of a link '61, the other end of which ispivotally con-- nected with the intermediate portion of the inner brush head 51. Mounted on the intermediate portion of the member 28 is a rearwardly extending bracket 62, and pivotally connected centrally to this bracket is a rocker 63, one end of said rocker being pivotally connected with one brush head, while the other end is pivotally connected with the other brush head. Thus, as the shaft 58 is rotated by the shaft 54, the crank arm will cause the reciprocation of the inner. brush, and through the connection of the rocker 63, between the two brushes, the other brush will be reciprocated, but in the opposite direction, and simultaneously with the reciprocations of the first brush.

On one end of the axle 31 is a sprocket wheel 64, and trained around this sprocket wheel, and

ground wheels 32, to the shaft 54, for the purpose of causing the reciprocation of the brushes 52.

Mounted on the intermediate portion of the.

front member 28, of the frame 26, is a small truck 66, which has a tongue 67, for attachment to the frame of hopper support. On the sides-of the front ends of the beams 27 arethe hooks 68,'to

which are connected the links 69, for connection Mounted on one side of the frame of the hop-' per'supportingmeans is a motor 71, the shaft of which is connected with the shaft 22, of the cylinder 21, through the medium of the clutch '72, and the gear set '73.

In the operation of the invention, the parts being connected together, as shown in Figure 1, the truck 10 is driven along the portion of road to be surfaced. As the mechanism proceeds, operatives, located in the truck '10 shovel the surfacing material into the mouth of the hopper, and the motor '71 being set in motion, the cylinder 21 will be rotated, whereby to properly com-minute the material, as itpasses between said cylinder and concave, or stationary pins or teeth 24, to be discharged through the outlet. 25, of the hopper, and deposited on the road. The material will thus be deposited in a layer which may have a face, by spreading the material, as will be readily understood. The surface of the loose material is then engaged and scraped by the forward scrap ing blade 36, and due to the fact that said blade is arranged diagonally across the frame portions of the material .Will travel along the blade and fall rearwardly from the open end thereof, to be reengaged by the rear scraping blade 41, and

caused to travel to the opposite side of the frame,

where the excess of the material is discharged to the side of the road, through the outlet open-' ing 44, in the side of the frame. As the machine proceeds further, the reciprocating brushes -52 engage the surface of the new material, producingv the smooth and level finish to the surfacing.

The guides 50 are vertically adjustable by means of the screws 50, carried by the, brackets 49, so as to regulate the contact of the brushes 52, with the surfacing material.

What is claimed is:

1. A distributing and smoothing device for road surfacing material including a frame, oblique bars carried by the frame and extending in opposite directions with respect to their obliquity, a scraper blade supported on each of said bars, one of the blades having an end spaced from a side of the frame and in proximity to one end of the other scraper blade, means for raising and lowering said blades on said bars, and the frame having a discharge opening at one end of said second blade.

2. A road surfacing machine including a frame, means carried by the frame for distributing material rearwardly and transversely thereof, brushes carried by the frame and mounted for reciprocal movement transversely thereof, means for reciprocating one of said brushes, and means connecting the brushes for transmitting an opposite reciprocating motion from said reciprocated brush to another of said brushes.

3. A road surfacing machine including a frame,

means carried by the frame for distributing material rearwardly and transversely thereof, a ground engaging wheel connected to the frame, a

brush carried by the frame and mounted for reciprocal movement transversely thereof, means connected with the ground-engaging wheel and the brush for reciprocating the latter, a second brush mounted adjacent the first-mentioned brush for reciprocal movement, and a rocker carried by the frame and connected to the brushes for transmitting motion from the first mentioned brush to the second mentioned brush.

4. A road surfacing machine including a frame having an exit, oblique scrapers carried by the frame and extending in opposite directions with respect to their obliquity, one of said scrapers being adapted to guide scrapings to the other of said scrapers, and said other of said scrapers being adapted to guide scrapings to said exit, brushes carried by the frame and mounted for reciprocal movement, a ground-engaging wheel on the frame, a shaft on the frame, driving means connecting the shaft and wheel, a crank on the shaft, a pitman connecting the crank and a brush for reciprocating the latter, and a rocker carried by the frame and connecting the brushes whereby to transmit reciprocal motion from one brush to another brush.

JOHN H. 'I'RAN'I', JR.

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