US1439290A

US1439290A - Subgrade drag

Info

Publication number: US1439290A
Application number: US313924A
Authority: US
Inventors: Charles M Butts
Original assignee: Individual
Current assignee: Individual
Priority date: 1919-07-28
Filing date: 1919-07-28
Publication date: 1922-12-19
Anticipated expiration: 1939-12-19

Description

@60 EQ2 SZ@ C. M. BUTTSy SUBGRADE DRAG.

FILED JULY 28. 1919. 3 SHEETS-SHEET 1 A a@ f C15-@TABEL Essig, B922. RABZQ@ Cy M. BUTTS.

SUBGRADE DRAG. FILED JULY 28. 1919, 3 sHEETssHEET 3 mw/Mm E-@l-ILTEEMEM.

Patented Dec. 19, 1922.

CHARLES M. BUTTS, 0F ORVILLE, CALIFORNIA. i

sUBenADE DRAG.

Application filed July 28, 1919. Serial N0.-313,924

To all whom t may concern):

Be it known that I, CHARLES M. BUTTS, a citizen of the United States, residing at Orville, in the county of Butte and Sta-te of California, have invented certain new and useful Improvements in Subgrade-Drags, of which the following is a specification.

This invention relates to highway or road building implements, and an object .of the invention is to provide a device for building a sub-grade for paved highways,`wl1ich will eliminate considerable of the manual. labor ordinarily necessary in the forming of a subgrade.

In theI construction of concrete or analogous highways,it is necessary to build a subgrade, or a foundation upon which the pav-4 ing mateivial is laid, this foundation or subgrade must be uniform to insure an evenv thickness of the concrete, asphalt or analogous highwayv paving substance, and in the majority of sectionsofthe country a curved sub-grade is made substantially four inches below the finished pavement.

lt is an object of this invention to provide a device, which will travel upon the head board orfconcrete form along the sides of the highway, and which will level and properly form the foundation or sub-grade, cutting oit the high places and filling in the low places, and also cutting or `forming this foundation or sub-grade in the proper shape to form a y shed for draining water to the sides ofthe highway, and which drag structure specifically includes a carrying frame having ferrules or cutting teeth at its forward end, for loosening the soil in the high places and having positioned rearwardly thereof a plurality of cutting blades which also act as scrapei's and are set, one slightly below the one next in front thereof, so as to form a gradual cutting away of the down surface to form the sub-grade or foundation for the highway.

A further object of the invention is to provide suitable. Conveyor structures, Awhich are provided for carrying surplus soil to the sides of the highway and for eliminating the necessity of manual shovellingof this surplus soil out of the highway bed and to provide means, engageable with the upper edge of one of the forms or header boards of the road bed construction which will op'- erate the conveyors during the travel of the grader. l

In use, this grader is particularly designed to be drawn over the highway by a roller, of any approved type such as are commonly employed for rolling highway surfaces, and

since it is necessary to roll the foundation or subgrade after it has been properly formed by the grader, it is necessary to provide means to facilitate the lateral movement of the grader to permit the roller, normally eIIi ployed for propelling the drag to pass rearwardly thereof for rolling the surface re' cently formedby the drag, and it is an object of this invention to provide means in a Adrag structure as specified, whereby the drag may be moved laterally. with comparative ease, the said structurecomprising a jack carried by the superstructure which is in turn supported by the frame of the dragand which has a track structure carried therebyupon which a pair of rollers engage,

said rollers being connected to the track structure',so v"that when the drag structure is elevated by means of the jack structure, olf the headerboard, it will roll laterally vor may be easily moved to one side, to `permit the roller to pass rearwardly thereof, after which grade drag showing the same in an elevated position to which it ismoved by means of the jack structure.

Figure 3 is a side elevation of the drag.

Figure 4 is a longitudinal section through the drag.

Figure 5 is a fragmentary cross section through the drag illustrating the jack structure associated therewith.

Figure 6 is a fragmentary section through a part of the drag'structure.

Figure 7 is a detail view illustrating apart of one of the carriers employed for carrying the surplus dirt to the sides of the' highway.

Figure 8 is a fragmentary top plan of the jack structure.

Figure 9 is a detail section illustrating the manner of connecting the harrow teeth to their supporting bars.

Figure 10 is` a detail view of one of the jack levers, and

Figure 11 is a detail view partly in section of a part of the drag structure.

Referring more particularly to 4the drawings, `wherein like characters indicate like and corresponding parts throughout the several views, 15 designates the main supporting frame of the drag or grader structure, which comprises side rails 16 and 17 connected by

suitable cross braces

18 and 19, the ends of the side rails 16 being braced by suitable angle braces 20. The

cross braces

18 and 19 have levers 21 pivotally connected thereto, one at each corner of the frame 15, and these levers are held in various adjusted positions through the medium of stop bolts 22 which engage through any one of a series of openings 23 formed in standards 24 which are carried by the side rails 16 and 17 at their ends. The inner end lof the levers 21 are connected through the medium of links 25 with a t'ool carrying frame 26 which frame is adjusted vertically by means of the levers 21. p*

The frame 26 carries a'pair of

cross bars

27 and 28 at4 its forward end, preferably formed of channel iron and these cross bars each have a plurality-of harrow teeth 29 connected thereto in any approved manner,

, preferably by means of U shaped bolts 3() as clearly shown in Figures 4 and 9 of the drawings, so as to permit adjustment of the position of the individual teeth 'with respect to their carrying bar. These teeth are preferably arranged in staggered rows, that is, the teeth carried by the supporting bar 28 are preferably disposed staggeringly with respect to the teeth 29 carried by the forward cross supporting bar 27 thus effecting a thorough breaking up of any soil surface with which they engage.

A cross bar 31 is positioned rearwardly of the cross bar 28 and as shown in Figures 1` and 4 of the drawings it is divided intermediate the side rails4 16 and 17 ,Y to accommodate the frame structure 32. The cross bar 31 has a cutting blade 32a connected to each` section thereof, which cutting blade is preferably positioned at an angle of substantially to the vertical, so as to provide an inclined or angled cutting surface for engagement withv the soil after it has been broken up or loosened by the harrowteeth 29. The lower cutting edge of the blade 32%i is preferably positionedl at approximately two inches above the desired finished level of the foundation or sub-grade.

Cross bars

33 and 34 are positioned rearithe jack structure is in use.

wardly of the cross bar 31 and they carry

cutting blades

35 and 36 respectively, which are also positioned at an angle of approximately 30o to the vertical or parallel with the cuttingblade 32a, to which they are simiwardly from'the forward or foremost blade,

the sub-surface or foundation of the highway will be gradually cut and levelled. These

blades

32, 35 and 36 are shaped, to conform to the desired shape of the foundation or sub-surface, as clearly shown in Figure 2 of the drawings, preferably so as to form a sub-surface or foundation which is liiigh in the center and gradually inclines toward each side to form a proper water shed.

As previously stated in the objects of the invention, it is desirable to move the drag structure laterally at certain times and to facilitate the accomplishing thereof, the jack struct-ure 40 is provided. This jack structure 40 includes the post 41 having the base 42 upon its lower end, which is provided for engagement with the sub-grade surface when This post 41 has ahead 43 upon its upper end, comprising a pair of spaced arms extending' upon opposide sides of the post, as clearly shown in Figure 8 of the dra-wings, from one arm to the other of each pair of which extends a rivet or pin 44 which is engaged by thel dog structure 45 during the use of the jack in either raising or lowering the jack structure. The dogs k45 are connected t-o the

operating levers

46 and 47, one being connected to each lever, and these levers are pivotally connected to the dog 45 intermediate their ends having their lower inner ends slottedas shown at 48, and connected to the post 41 for operating the jack structure. The levers 46 and y47 are pivotally carried'by the truck structure 50 comprising spaced axles 51 and 52.

connected by connecting bars 53 to which the levers46 and 47 are p'iy'otally connected from which position the levers extend laterally of the frame structure 32. However, if it is desired that the levers 46 and -j47 extend 'longitudinally of the frame 32 they may be mounted upon the axles ,51 and 52. Flange rollers 54 are mounted upon the ends of the axles. 51 and 52and engage on a trackway 55 formed on the frame 32, so that.`

when the jack structure 41 is lowered as travelling in each direction from the center of the drag structure, intermediate the ends thereof, which conveyors are provided for carrying surplus dirt to the sides ofthe highway or road bed. Each of the conveyor structures comprises a shaft- 62 .rotatably supported by suitable bearings 63 upon which is mounted a suitable sprocket about which the chains 64 ofthe conveyor pass. The chain 64 has buckets or fiights 65 attache-d thereto at spaced intervals, and these buckets face during the upper run of the chain towardthe outer sides oredges of the drag structure, while on the downward run they face toward the center of the drag structure so that they' will scoop up the sur- Y plus soil and 'carry it to the side of the drag. The outer; end of the chain 64 of each of the conveyor structures travels about a sprocket 66 which is mounted upon a shaft 67. The shaft 67 'has 'a worm 68 there-on, which meshes with the worm `gear 69. The wormgear 69 is mounted upon a suitable supporting shaft 70 carried by a supporting frame or bracket structure 71. The `worm 69 in turn meshes with a worm gear 72 which projects aslight distance below the lower edge of the side rail 16 or 17 of the frame 15, so that during the travel ofthe dragover the forms or header boards indicated at A in Figure 2 of the drawings, the worms 72 will be rotated for transmitting motion to the operating shaft 67 of its respective conveyor, to operate the said conveyor for cai-ryin surplus soil to the sides of the roadway.

Iumming up, generically the operation of the improved subgrade drag is as follows: The tool carrying frame 26 is first adjusted at the proper or desired elevation to" regulate the depth of the surface of the `foundation or sub-grade,` below the finished surface of the highway, and the drag structure is then -drawn over the header or form boards A by suitable'type of propelling means during which ,movement the harrow teeth 29 will brealetup thel soil at the high places, loosen.

ing it, after whichit will be engaged respectively by

theV blades

32a, 35 and 36, thus levelled to provide the proper shape to the foundation. However, by particular reference to Figures and 4 of the drawings, it

will be noted that the cutting edges of the surfacing or cutting

blades

35 and 36 projects below the lower edges-of the harrow teeth 29, and thus a hard surface for the foundation vwill be formed in the majority of places,the said blades pushing the surplus soil olf the top of the foundation or subgrade. Any surplus soil which is not used in lillin up the -low places will be conveyed to the sldes of the highway or road bed by the

conveyors

60 and 61 after the drag structure is filled, the said conveyor structures being positioned to permit the retaining of a certain amount of soil in the drag structure for filling in the low places during the operation thereof. f

When it is desired to move the drag structure laterally the jack structure 40 is operated, in a manner heretofore specified for raising the drag structure off the forms A and permitting it to be swung laterally and through the medium of the rollers 54 and track structure 55 rolled off of one of the tracks A thus partly removing it.from the roadwayand providing sufficient passage-` for a roller or the like. hanges in details may be made without departing from the spirit of this invention, but;

I claim: 1. In a highway drag or .surfacer, the combination of a-plurality of vflat surfacing 'blades shaped to it transversely a road section each having its cutting edge positioned slightly lower than the cutting edge of the next forward blade."

2. In a highway surfacer, the combination of a supporting frame, a jack structure associated with said supporting frame adapted to elevate said frame for lateral swinging, and 'means permitting relative movement of said frame away from said jack structure whensaid frame is elevated.

. 3. In a highway Vsurfacer, the combination of a supportingframe, a jack structure associated with said supporting frame adapted to elevate Asaid frame `for lateral swinging,

lsaid blade and operating in a. plane transversely of the plane of said `frame, said endless belt having earth engaging members thereon which are disposed upwardly of the scraping edge of said blade and adapted to operate upon the earth gathered forwardly of said blade.

.rie

5. In a highway drag or surfacer, the

combination of a supporting frame, a tool carrying frame carried thereby, a plurality of 'surfacing blades carried by said tool carrying'frame and each having its cutting 'edge positionedv slightly lower than the cutt'ingedge of the next forward blade, and a jack structure associated with said tool whereby the drag carrying frame whereby the drag or surfacer structure may be elevated' out of operative position.

6. I'n a highway drag or surfacer, the combination of a supportingframe, a tool carrying frame carried thereby, a plurality of surfacing blades carried by said tool carrying frame and each having its cutting edge positioned slightly lower than the cutting edge of the next forward blade, a jack structure associated with said tool carrying frame or surfacer structure may be elevated out o structure carried by said tool carrying frame, land a truck structure carried by said jack structure and engaging said -track structure to facilitate 'lateral movement of the drag or surfacer.

7. In a highway drag or surfacer, the

combinationof a supporting frame, a plu-- rality of surfacing blades carried thereby, a track. structure carried by the supporting frame, a jack structure, a truck structure carried by said jack structure and engaging said track'structure, said jack structure adapted tobe operated to elevate' the supporting structure out ofA an operative posi-` tion.

8. In a highway drag or surfacer, the combination of a supporting frame, a plurality of surfacing blades carried thereby, ya track structure carried by the supporting frame, a jack structure, a track 'structure carried by saidjack structure and engaging said track structure, said jack structure adapted to be operated to elevate the supporting structure out of an operative position, and a conveyor structure carried by said supporting frame.

9. In a highway drag or surfacer, the combination of a vsupporting frame', a plurality of surfacing bladescarriedthereby, a track structure carried by the Supporting frame, a jack structure, a track structure carried by said jack structure and engaging said track structure, said jack structure adapted to be operated to elevate thevsup-v porting structure out ofan operative position, a conveyor structure carried b said supporting frame, and means opera le by the travel of the drag structure for operating said conveyor structure.

10.In a highway surfacer, the combination of a trackway, a supporting frame slidably mounted on said trackway, a tool carrying frame, road scraping tools carrled thereon, means permitting adjustment 'of said tool carrying frame with respect to said supporting frame, al jack structure carried by said tool carrying frame and movable longitudinally thereon, said jack` structure provided to elevate the entire surfacer for removing it from the hi hway. s 11. In a highwaysur acer, the comblnation of a trackway, a supporting frame slidably mounted on said traokway, a tool vcaroperative position, a track rying frame, road scraping tools carried thereon, means permittlng adjustment of said tool carrying frame with respect to said lsupporting frame, a jack structure carried ing the same upon the jack as a pivot and then moving the entire surfacer laterally ofI' of the track way. A

l2. In a highway drag or surfacer, the combination of a supporting frame, a plurality of surfacin blades each having its cutting edge positloned slightly lowelI than the cutting edge of the next forward blade, means carried by the supporting frame for elevating the drag or surfacer structure out of an operative position, and a conveyor structure carried by said drag structure, forconveying' soil laterally of the drag structure.

I 13. In a highway drag or surfacer, the combination of a supporting frame, a con- Aveyor structure carried thereby, an operat- 111g shaft for sald conveyor structure, a

gear carried by the supporting frame and projecting below the lower edge thereof for frictional. contact with the roadway for 'ro' tation during the travel of the drag structure, and means operatively connecting said' gear and conveyor operating shaft.

14. In a highway drag or surfacer, the

combination of a supporting frame, a conelevation to engage and scrape the surface of a road, of an endless belt having a lower side movably disposed longitudinally along the front side of said blade, said belt having earth engaging members adapted to break lumps .of earth gathered in front of said blade, and means for driving said. belt to break said earth.

16. A. grader, comprising in combination a frame, a scraping element mountejlonsaid frame, a pair of conveyors 'mo nted forwardly. of said scraping element,y and longitudinally thereof, and means for driving said conveyors in opposite directionsv to gather material collected by said scraper, and to deposit the same laterally of said grader.

is@ l 17. A grader` comprising in combination a frame, a scraping element mounted on said frame, a pair of conveyors mounted forwardly of said scraping element and longitudinally thereof, each of said conveyors operating for substantially one-half of the length of said scraping element, and means for driving said conveyors in opposite direc tions upon movement of said grader, to collect material from forwardly of said scraping element, and to deposit the salne laterally of said grader.

CHARLES M. BUTTS.