US1695202A

US1695202A - Asphalt spreader

Info

Publication number: US1695202A
Application number: US280932A
Authority: US
Inventors: Alfred T Newell
Original assignee: Individual
Current assignee: Individual
Priority date: 1928-05-26
Filing date: 1928-05-26
Publication date: 1928-12-11
Anticipated expiration: 1945-12-11

Description

Dern 11, 192s, 1,695,202

' A. T. NEWELL ASPHALT SPREADER Filed May 26, 1928 2 sheets-sheet 1 0- .a Alfred TNewell Dec. 1l, 1928.`

A. T. NEWELL ASPHALT SPREADER 2 Sheets-Sheet 2 Filed 'May 26, 1928 0 0. 0 o 0T 0.o

e l o He n .411 11./ Ef o o .m4 M 7 @5 Wmme M110 au. msvd, 0J- O1. Y au ras, 4 M O0 www o WM gwvwntoz AAlfred TNewell Patented Dec. 11, 1928.

" UNITED STATES PATENT OFFICE.

ASPHALT sPaEADEa, I

Application led May 26,

My invention relates to a machine for use in road building for uniformly distributing, spreading, striking off and smoothing paving material such as for example, hot bitumen or the like; andit is an object of the invention to provide a machine of this character which will eliminate a large amount of manual labor and by means of which such material may be more accuratelyand easily distributed in order to reduce if not eliminate the high and low places or waves and unevenness which ordinarily occur in the building of a roadway; all as will be hereinafter more particularly described and claimed. I

Referring to the accompanying drawings which are made a part hereof and on which similar reference characters indicate similar part-s,

Figure l1 is a top plan view of my invention,

Y Figure 2, a side elevation, l Figure 3, a longitudinal section,

. Figure 4, a fragmentary rear elevation,

and y Figure 5, a fragmentary longitudinal detail section. In the drawings, reference character 10 indicat-es a pair of steel rails disposed one at each side of the roadway and upon which are supported trucks formed of outer and inner channel members 11- and 12 disposed in opposed relation above each rail 10. The channel members are connected by spacersw13 and a longitudinal side plate 14 is secured to the inner channel member. Brackets 15 are connected to the upper edge of the side plates and to the outer channel members for maintainingthe parts in the proper position. Between the channel members 1l and 12 at the 4o front and rear of the trucks are mounted a pair of wheels 16 that roll upon the rails 10.

At the front end of the machine an upright channel member 17 is secured to the side plate 14` at each side of the machine, such uprights being connected by a'scraper blade carrying channel member 18 by means of bolts 19 which slide in slots 2O in the uprights 17. A scraper blade 21 is secured to the lower ortion of the channel member 18 and pro- 5o jects below the same, such blade being shaped to conform to the crown of the roadway. Means is rovided for adjusting the height of the bla e carrying member 18 which com- 1928. Serial No. 280,932.

prises an adjusting screw 22 disposed at each end of the channel `member,su ch' adjusting screw being supported by a bracket 23 carried by the side plate 14 anda pair of lock nuts 24 are employed for locking the parts in proper adjusted position.

Rearwardly of the blade 2 1 is mounted a second cross or channel member 25supported by upright angle members 26 corresponding to the upright 17 and such cross member 1s adjustable by means of a screw .27 carried by bracket 28. The angle member 25 is disposed slightly above the plane of the front cross member in order to permit suicient material to pass thereunder to form the roadway, said member being also provided with depending forwardly extending rake teeth 29 which are adapted to comb the material deposited.

A plurality of spaced parallel rods 30 are supported between the angle members 18 and l25 said rods having their forward ends bent downwardly and resting in apertures in the lower flange 31 of the channel member 18 with the rear ends of such rods bent slightly and. extending through the vertical midportion of the .channel member 25 and held therein by means of a nut 32. Pipes 33 of relatively larger size are placed on the rods 30 to form a grate for reception of the road material which prevents the same from being dumped directly on the foundation of the roadway and therefore eliminate packing of suchmaterial which is a decidedly objectionable feature in applying asphalt or the like. The pipes 33 rotate to discharge material. An apron 18 has its front edge supported directly on the blade vcarrying member 18 and extends rearwardly Vdownward and terminates over the forward portion of the grat-e bars 33, said apron being adapted to receive a portion of the material as it is dumped onto said grate bars.

In order to assist in raking the material deposited and to 'pulverize and evenly distribute the same, I provide a pair of aligned

shafts

34 and 35 adjacent and in parallel relation to the cross member 25, such shafts having their inner ends journalled in a U- shaped bracket 36 and having their outer ends extending through the side plates 14. The

shafts

34 and 35 are provided with o positely extending projections or teeth 37 which l42 and have their inner are located between adjacent pipes' 33. The aligned

shafts

34 and 35 are provide-d on their outer ends `with ypinions 38 which are driven by an intermediate pinion 39 :from a driving gear 40 on the axle 41 of one of the truck wheels.Y The aligned shafts in this manner are rotated independently, however, if desired, a single shaft may be used and the driving mechanism at one side of the machine omitted.

Rearwardly of the member 25 is mounted a second similar member 42 provided with rake teeth 43 which extend downwardly and forwardly and such member is supported by brackets 28 in a manner similar to the previously described

cross members

18 and 25. Rearwardly of the rack 42 are mounted a pair of oppositely arranged

diagonal rakes

44 and 45 which form substantially the letter X. These diagonal rakes are supported at their outer ends similar to the ra es 25 and ortions connected and adjustably supported y means of a rear strut or cross brace 46. Behind the rear set of rakes is mounted a curved ironing-tool vwhich extends across the inner roadway and is adapted to smooth oif and seal the material ready for the roller which is to follow.

The short sections of sheet metal have their forward portions curved at an angle of about 45 deerees and are attached to a support 48 whicth is supported at each end in a manner similar to the

rakes

25 and 42 and is connected by means of straps 49 to the strut 46.

In theI operation of my machine, road surfacing material such as hot bitumen asphalt or a mixture of concrete or other material is discharged from trucks or the like onto the apron 18 and grate bars 33 while the machine is idle whereupon the machine is pulled along and the material is combed or harrowed to a smooth surface of a thickness corresponding to the difference between the depth of the cutting edge of the scraper blade 24 and the l adjustable rake 25. The ironing and edging tool at the rear of the machine on account of pressure caused by the weight of machine forms the same to the proper radius and seals the same, thereby eliminating the necessity of hand tamping, The material is uniformly spread to a uniform density and desired comf pactness and is ready for rolling.

Material used from a central mixing plant and deposited in the spreader by means of trucks, laid, spread and rolled will eliminate all visible waves of the character which can be so plainly seen when riding 4in an automobile at night over asphalt roads not constructed by my machine.

It will be obvious to those skilled in the art that various changes may be made in my device without departing from the spirit of my invention, and I, therefore, do not limit myself to what is shown in the drawings and described inthe specification, but only as set forth'in the appended claims.

Having thus fully described my said invention, what 'I claim as new and desire to secure by -Letters Patent, is: j

1. A road building machine comprising an adjustable scraper for preparing the roadway for the reception of surfacing material, a cross member supported in spaced relation to said scraper, a plurality of rods having their ends supported by said scraper and cross member, and pipes loosely mounted on said rods, substantially as set forth.

2. A road building machine comprising a scraper forpreparing the roadway for the reception of surfacing material, means for vertically adjusting each end of the scraper, a cross member supported in fixed spaced relation to the scraper, pipes mounted on said rods and forming grate bars, and a plurality of rakes mounted rearwardly of said pipes, substantially as set forth.

3. rA road building machine 'comprising av scraper for preparing the roadway for the reception of surfacing material, means for vertically adjusting each end of the scraper, a cross member supported in fixed spaced relation to the scraper, pipes mounted on said rods and forming grate bars, a plurality of rakes mounted rearwardly of said pipes and means for ironing out the material after it is operated upon by said rakes, substantially as set forth.

4. A road building machine comprising a scraper for preparing the roadway for the reception of surfacing material, means for vertically adjusting each end of the scraper, a cross member supported in fixed spaced relation to the scraper, pipes mounted on said rods and forming grate bars, a plurality of rakes mounted rearwardly of said pipes, and a rotatable rake having teeth disposed in alternation between said pipes, substantially as set forth. s

5. A road building machine comprising a subgradev scraper blade adjustably supported across thel front end of the machine, a pair of spaced cross members adjustably supported llO adjacent the scraper, relatively short rods y connecting the spaced cross members, relatively large pipes rotatably mounted onsaid rods in vertically inclined position, an apron projecting rearwardly over the pipes and forming'a shed for receiving road material for preventing the same from being dumped directly on the roadway against the scraper blade, substantially, as set forth. y

6. A road building machine comprising a subgrade scraper blade adjustably supported across the front end of the machine, a pair of spaced cross membersy adjustably sup- -V ported adjacent the scraper, relatively short rods connecting the spaced cross members,

relatively large pipes rotatably mounted on rear end of the machine, substantially as set said rods in vertically inclined position, an forth. apron projecting rearwardly over the pipes In witness whereof, I' have hereunto set my 10 and forming a shed for receiving road mahand at Birmingham, Alabama, this 22d day 5 terial for preventing the same from being of May, A. D., 1928.

dumped directly on the roadway against the 4 scraper blade, and a smoothing iron at the ALFRED T. NEWELL.