US1741127A

US1741127A - Highway template construction and maintenance machine

Info

Publication number: US1741127A
Application number: US299366A
Authority: US
Inventors: Hair Charles Edwin
Original assignee: EDGAR A BROWN; FAY ULLEM HAIR
Current assignee: EDGAR A BROWN; FAY ULLEM HAIR
Priority date: 1928-08-13
Filing date: 1928-08-13
Publication date: 1929-12-24
Anticipated expiration: 1946-12-24

Description

C. E. HAiR Dec. 24, 1929.

HIGHWAY TEMPLATE CONSTRUCTION AND MAINTENANCE MACfiIHE F iled Aug. 15. 1.928 4 Sheets-Sheet 1 ATTORNEY 4 SheePs-Sheet 2 Bee. 24, 192 9.

c. E. HAIR HIGHWAY TEMPLATE CONSTRUCTION AND MAINTENANCE MACHINE Filed Aug. 13. 1928 WITNESSES 4 Sheets-Sheet 3 w wbw N c. E. HAIR Dec. 24, 1929.

HIGHWAY TEMPLATE CONSTRUCTION AND MAINTENANCE MACHINE Filed Aug. 13. .1928

C. E. HAIR Dece 2. 1 $2 8.

I HIGHWAY TEMPLATE CONSTRUCTION AND MAINTENANCE MACHINE Filed Aug. 13. 1928 4 Sheets-Sheet 4 INVENTOR CZEJZZai WITN ESSES ATTORNEY same to the limits of the shoulders.

Patented Dec. 24, 1929 UNITED STATES PATENT OFFICE CHARLES Enwm HAIR, or BEAUFORT, sourn CAROLINA, ASSIGNOR or ONE-HALF T EDGAR a BROWN, or BARNWELL, sourn canonnm, AND ONE-HALF TO FAY ULLnm HAIR, on CHARLESTON, sou'rn CAROLINA HIGHWAY TEMPLATE CONSTRUCTION AND MAINTENANCE MACHINE Application filed August 18, 1928. Serial No. 299,366.

This invention relates to highway template construction and maintenance machines.

An object of the invention is the provision of a device which will construct, shape, dress and maintain the shoulders, ditches and slopes adjacent to the surface courses of roadbeds and pavements in such a manner that such -shoulders, ditches and slopes will-conform accurately to the elevations, lines, grades, width, shape and cross section as prescribed in the specifications and disclosed on the plans for a roadbed.

Another object of the invention is the provision of a surfacing and maintenance machine whlch may be retained n perfect alinement with surface courses or pavements and in which flanged wheels will engage with the longitudinal edges of the pavements in connection with flanged crawlers or smooth steel or rub er covered crawlers equipped with means for steering to keep the machine in alinement with the roadbed.

Another object of the invention is the provision of a device for constructing, shaping, dressing and maintaining the shoulders,

ditches and slopes adjacent to surface courses and pavements withmeans to remove foreign material from the pavements or courses and place it within the limits of the shoulders or lines.

A still further object of the invention is the provision of a device for gathering material from the berm or ditches adjacent to the shoulder which will elevate and distribute the A still further object of the invention is the provision of a device for scarifying or breaking up the material upon opposite sides of a roadbed or pavement in order that the same may be properl distributed and shaped by cooperating bla es associated with the scarifying or breaking up device. 0

Another object. of'the invention 1s the provision of a device for constructing, shaping, 0 dressing and maintalmng the shoulders,

ditches and slopes adjacentto surface courses and pavements to conform accurately to the elevation, lines, grades and cross sectional area of such shoulders and ditches in accordance with the specifications and plans out- Another object of the invention is the provision of a device for shaping and for placing those portions of a roadbed upon opposite sides of the edges of a pavement in proper condition while permitting trafiic during such condition to travel over the central portions of the device so that at no time during the reconditioning of the roadbed will the trafiic be delayed. Q

Other objects of the invention include the provision of a device for shaping, dressing and maintaining the shoulders, ditches and slopes adjacent to the surface courses and pavements, the device being adapted tobe moved longitudinally under its own power with means being provided for elevating or lowering the device and placing the traction lwhieels in operative relation with the road- This invention will be best understood from a consideration of the following detailed description, in view of the accompanying drawings forming a partof the specification; nevertheless it is to be understood that the invention is not confined to the disclosure, being susceptible of such changes and modifications which shall define no material departure from the salient features of the invention as expressed in the appended claims.

Figure 1 is a plan view of the device con structed according to the principles of my invention,

Figure 2 is a transverse vertical section taken on the line 2-2 of Figure 1,

Figure 3 is a fragmentary side View of one end of the device,

Figure 4 is a transverse vertical section of a roadbed constructed in accordance with the template and by the device illustrated in Figures 1 to 3 inclusive,

Figure 5 is a section taken along the line 5-5 of Figure 3,

11 and by being Figure 6 is a view perspective of one end taken along the'line 7-7 of Figure 6,

Figure 8 is a transverse vertical section taken along the line 8-8 of Figure 7,

Figure 9 is a transverse vertical section wheel 31, while th foutermost gears 35 are in taken along the line 99 of Figure 1, k

Figure 10 is a vertical section taken along the line 10-10 of Figure 9,

Figure 11 is a vertical section of a modi fied form of the device showing traction wheels with means for elevating or lowering the said wheels, and

Figure 12 .is a horizontal section taken along the line 12-12 of Figure 11.

Referring more particularly to the drawings 10 and. 11 deslgnate a pair of channel beams which are connected together by diagonally disposed reinforcing bars 12. Channel beams 13 are secured to the ends of the beams 10 and 11 by means of corner plates 14. The channel beams 10 and 11 may be split intermediate their ends as indicated at 15 anda second channel-beam 16 is located within each of the channel beams 10 and 11, spanning the adjacent ends of such beams, with the channel beams 16 connected by means of bolts 17 to the channel beams 10 and -11.

A platform 20 is secured in any approved manner to the top flange of the channel beams 10 and 11 and extends longitudinally of the same and over the split portions 15 of said beams. Extensions or auxiliary platforms 21 and22 are lfingdlyconnected as at 2 3 to the opposite side edges of the platform 20 and are held in a substantially horizontal position by means of coil springs 24 embracing curved rods 25 which are secured at 26 to "the bottom face of the extension. The inner lower ends of the curved rods 25 pass'through perforations in the channel beams 10, 16 and 11, 16. .The lower ends of the springs 24 abut an outer face of the channel beams 10, under compression support the extensions 21 and 22 in substantially horizontal position. These extensions may be depressed by the front wheels of an approaching automobile so that the automobile may travel over the platform during repairs or during the maintenance of the shoulders, ditches and slopes, so that train'c will not be arrested at an time. However, when the device is not bemg used during Working hours, the sanie may-be carried to some point along the road where it may be transferred to a safe distance and out of the path of the traflic in a manner which will be presently explained.

The framework and platform just described are supported by means of

wheels

30, 31 and 32, having flanges 33 which are adapted to engage the side edges of the pavements or roadbed for maintaining the device in position when the same is being drawn over the roadbed. To each of the wheels is secured a 50 meshing with a g implements for grading,

gear 34,- or the gear may be cast integrally with the wheels. These wheels are supported by means of axles 35 secured in any approved manner. to the channel beams 13. A lurality of gears 35, 36 and 37 are located etween each pair ofgwheels with the innermost gear 37 in mesh with the gear 34 of the mesh with the gears 34 of the

wheels

30 and 32. The intermediate gears 36 mesh with the gears 35 and 37. Gears 35 and 36 are supported on axles which are connected in any approved manner to the channel beams 13.

A shaft 40 has sliding clutches 41 and 42 at the opposite ends thereof which are res ectively operated by levers 43 and 44.

lutch member 41 is adapted to be moved into engagement with a clutch member 45 which is secured to a shaft 46 and to which the driving gear 37 adjacent the wheel 32 is connected. A shaft 47 has a clutchmember 48 which is adapted to be engaged by the clutch-member 42. An internal combustion engine 49 issupported in any approved manner by the diagonally disposed brace bars 12 and has a gear ear 51 which is rigid with the shaft 40 so that when the engine is in operation, said shaft is being revolved, which will in turn cause rotation of the gears 35 to 36 inclusive upon opposite sides of the platform 20. which in turn causes rotation of the wheels 30 to 32 inclusive.

On each end of the centrally disposed frame is a frame which supports the various shaping, dressing and maintaining the shoulders, slopes adjacent the surface courses and pavements. Each frame consists of a pair of longitudinally disposed beams 52 and 53 which have inturned portions 54 which are curved downwardly as shown at 55, and below the plane of the beams 52 and 53, said beamsbeing secured in any approved manner by means of extensions 56 to the outer walls of the channel beams 10 and 11. An end beam 57 is secured to the outer ends of the beams 52 and 53. A reinforcing or intermediate beam 58 is secured by means of plates 59 to the beams 52 and 53 and located in parallel relation with the end beam 57. Corner plates 60 are provided for connecting the outer ends of the beams 52 and 53 to the ends of the beam 57 A pair of standards 61 and 62 are connected by means of corner plates 63 to the transverse .beams 13. Diagonally disposed brace bars 64 are connected between a beam 65 and the beams 52 and 53. Brace bars 66 crosseach other and are connected between the corner plates 63 and the brace bars 64. Brace bars 67 extend from the standards 61 and 62 respectively, to the beams 10 and 11. An angle iron beam 68 extends from the top of the standard 61 diagonally across an end frame and is connected at 69 to the corner scraper blade 81 on its outer face. The blade is adapted to engage over the surface of the roadbed and remove foreign material, from the pavement and force the same to the shoulder or slope adjacent to the surface course or pavement. A pair of racks 82 and 83 are rigidly connected with the opposite ends of the moldboard 80 and have secured thereto a guide 84 which is U-shaped in cross section and provided with internal flanges 85 for maintaining a bar 86 in position within the guide 84. The bar 86 is carried by a bracket 87 secured to the channel beam 53. A gear 88 meshes with the rack 82 and is operated by means of a shaft 89 and a handwheel 190. The shaft 89 is carried by bearings 91 at the top of brackets 92, secured to the beam .53. Rack 83 is secured to a guide 93 which is similar in cons ruction to the guide 84 and receives a bar 94 carried by a bracket 95 secured to the transverse beam 58. This rack is operated by means of a gear 96 and a shaft 97 which is revolved by a handwheel 98.

A second moldboard 100 has racks 101 and 102 secured to the opposite ends, which are respectively in mesh with

gears

103 and 104. Gear 103 is operated through a shaft 105 and a handwheel 106. A bracket 107 is secured to the end beam 57 and is provided with a bar 108 received within a guide 109 which in turn is secured to the rack 101.

Gear 104 is operated by a shaft 110 which in turn is revolved by a wheel lll. Back 102 is secured toa guide'112 which is U-shaped in cross section and receives a guide bar 113 carried by a bracket 114 which is secured to the transverse beam 58. By this means the opposite ends of the moldboard 100 are adapted to be adjusted vertically and independently of each other.

A moldboard 120 has an extension 120 provided with a rack portion 121 in mesh with a worm 122 rigid with or formed integrally with a shaft 123 mounted in bearings 124 and operated by a handwheel 125.

j The extension 120 is slidable in a guide 126.

One end of the guide is pivotally mounted at 127 on a bracket 128. The opposite end of the guide is provided with a bolt 129 which is adapted to be engaged with any one of a pluralit of perforations 130 formed on a curved TEL! 131. By this construction the guide 126, moldboard 120, and likewise ascraper blade 132, may be tilted at any angle It will be seen by this construction that the scraper blade 132 is not only adapted to be moved through an angle to the horizontal,

but may be projected outwardly from an end frame or retracted with said frame.

A fourth blade 140 is secured to a moldboard 141 which is adjustable in a vertical plane with the one end of the moldboard adjustable independently of the other end. This adjustment is provided for by means of a pair of brackets 145 and 146 res ectively connected to the beam 58 and the cam 52. These brackets carry guide bars 147 slidably mounted in channel frame 148. To each of the channel frames is secured a rack 149 meshing with a gear 150 which is operated through a shaft 151 and a handwheel 152.

.As shown more particularly in Figures 7 and 8, a bearing 160 which supports the shaft 1 105 is split and is provided with flanges 161 and 162 which are perforated to receive a bolt 163. This bolt is threaded into the lower flange 162, but passes through the perforations in the other flange 161. This bolt is provided with a handle 164 for rotating said bolt whereby the flanges 161 and 162 are either drawn together for locking the shaft 105 against rotation, or for moving the flanges away from each other to permit rotation of said other shaft by the handwheel 106 when desired.

While I have particularly shown and described the loc'king mechanism for the shaft 105, it will be appreciated that such locking mechanism is employed in connection with all of the shafts and gears for raising and lowering any of the ends of the scraper blades or road working tools. I

Referring more particularly to Figure 4, it will be seen that a transverse vertical section of the roadbed is disclosed, which is illustrative of the type of work that is to be done by the machine, and, in accordance with the template prepared by the road engineers of certain jurisdictions. The central portion indicated at 166 designates the pavement or concrete road, while the opposite portionsffl supported by an axle 182. The wheels are provided with some form of means for operatively connecting the same to the power plant 49 so that the device will be propelled or conveyed along a roadbed with its longitudinal axis;i in line with the longitudinal arms of the roa A bearing or nut 183 is secured in any approved manner to each beam 10 or 11 and is rovided with a bracket 184 carrying a bearmg 185 for a shaft 186 to which are connected at the opposite ends, gears 187. Each gear meshes with a horizontall disposed gear 188 which is slidably mounte on a screw 189 secured in any approved manner by means of flanged members 190 and 190 which embrace the axle 182 and are rigidly clamped thereto by means of bolts 191. Each screw is provided with a longitudinal slot 192 in which is received a key 193 carried by the gear '188 and a hub 194 formed integrally with the gear 188. The hub 194 has a flange 195 received within the bearing or nut 183 for maintaining the gear 188 against longitudinal movement of the screw 189. The bearing 183 is provided with a slot 196 which opens into the recess in the bearing where the flange195 is seated, so that the hub 194 and gear 188 may be removed from the bearing when desired. The upper end of each screw has a rounded head 189 seated within a socket in the member 190.

A portion 200 of the shaft 186 is squared and receives a ratchet wrench 201 having a handle 202 which is adapted to be rocked for causing rotation of the shaft and likewise the gears 187 and 188.

At the opposite ends of the main frame and on opposite sides of the main platform 20 are provided pairs of nuts 205 in which are threaded screws 206 having an operating member 207 at the upper end thereof and a fork 208 at the lower end supporting a wheel 209. An object of this construction is for the purpose of elevatin the frame slightly above the roadbed and likewise the

wheels

30, 31 and 32 at times when the apparatus has been conveyed to a cross road. The wheels 209 may at that time be revolved in order to provide for the proper turning of the machine at the cross roads or for facilitating the movement of the apparatus transversel of the cross road and due to the fact that t e shoulders of the cross road would act as an obstruction to the wheels '30, 31, and 32.

The operation of my device is as follows:

The apparatus as shown in Figure 1 may be conveyed to the work over a roadbed by means of a tractor or the same may be driven under its own power through the power plant 49 which is connected in any approved manner with the traction wheels 180 and 181. This connection may be made by a chain drive orthe usual shafts and gears. The wheels 180 and 181 at that time have been sufliciently lowered to support apparatus on the roadbed. The wheels 30 to 32'inclusive will have been elevated sufliciently above the roadbed to be out of contact therewith. In a case of this kind the platform 20 is usually removed and the axles 182 are located-transversely of the main frame so that the apparatus will extend longitudinally along the longitudinal axis of the roadbed with one of the opposite ends of the ag aratus moving forwardly alon the bed. er the apparatus has reache the pont where the work is adapted to be carried out, the same is lowered and the'wheels 180 and 181 may be removed and the platform 20 together with its hinged extensions 21 and 22 will be applied so that during the o eration of the "machine trafiic may be moved along the road u on opposite sides of the apparatus by travel ing over the platform 20 and the hinged extensions 21 and 22..

When the machine is in operation the blades 81 will move dirt or other foreign matter from the concrete roadbed and force the same out over the shoulders. The blade 100 acts as a surface treating device which carries the dirt inwardly towards the roadbed while the blade 140 acts as a finishing device for spreading out and leveling the material which has been brought inwardly by the blade 100. It will be seen by this construction that three blades 81, 100 and 140 all cooperate for leveling, planing and for fin ishing the shoulders on opposite sides of the roadbed, as indicated at 167.

Theplow blade 132 may be tilted at any angle to the horizontal for cutting the berm 168 since this blade is not only tilted at an angle to the horizontal, but is located at an acute angle to a vertical plane passing through the longitudinal axis of the apparatus. It will move the dirt upwardly towards the shoulder 167 so that all hollows maybe filled up while any uneven or hilly portion will be removed. This blade acts to build up and maintain the shoulder 167 while providing for the proper slope of the berm in accordance with the specification-0f the engineers of the jurisdiction.

A plow 130' is provided with a shank which is connected to the outer end of the blade 140. This plow cuts the dirt at the ditch 170 and pulls the same forwardly for edging and worm 122 lade 132 laterally om an end of the apparatus so that any width of, the berm may be cut as desired. The angle of inclination to the horizontal of the blade 132 is controlled by the pivotal connections of the moldboard and also by the arcuately shaped mem her 131 and perforations 130 which receive the bolt 129 so that by varying the horizontal position of the inner end of the moldboard, the angle of inclination of the blade 132 is varied accordingly.

The sliding clutches 41 and 42 on the shaft .40 are of the standard paragon motor boat type of clutch and are so constructed that by pulling the levers 43 and 44 in one direction,

the machine will be driven forwardly while the reverse movement of the levers will cause a reverse operation of the machine. On the other hand, one clutch may be held neutral while the other clutch is placed in operative position so that the machine may be driven through the power plant at one side when necessary.

Crawlers may be employed in connection with the traction wheels when desired. While the machine is particularly adapted for use on hard surface coursesand where the flanged wheels and crawlers are utilized to retain the machine in alinement in the roadbed, such crawlers or flanges 33 maybe readily removed as seen from Fig. 10, so that the machine may be propelled over gravel, clay-gravel or sandclay roads by the proper manipulation of the power drive through the medium of the reverse clutches.

Certain of the blades may beprovided with teeth for scarifying the surface of a road and where a strai ht edge blade or plow would not be servicea le.

It will be seen from an inspection of the drawings that with a main frame disposed transversely of the roadbed and with the auxiliary frames extending beyond the side edges of the roadbed that when corresponding shoulder-trimming elements are engaged with theshoulders that the engagement of the shoulder-trimming elements with the material forming the shoulder will operate to maintain the frame at substantially a right angle to the side edges of the hard roadbed.

In other words, pressure exerted by the shoulder-trimming blades in one auxiliary frame will be compensated by a similar pressure exerted by corresponding shoulder trimming blades in the auxiliary frame at the other .end of the main frame.

What is claimed is 1. In an apparatus of the character described, a main frame, an auxiliary frame projecting from each end of the main frame, surface treating blades carried by the. auxiliary frames, means for supporting the main frame for transportation over the roadbed, and means carried by the main frame to permit the passage of trafiic when the apparatus is in an operative position on the roadbed.

2. In an apparatus of the character described, a main frame, an auxiliary.frame projecting from each end of the main frame, surface treating blades carried by the auxiliary frames, means for supporting the main frame for transportation over the roadbed, and platforms carried by the main frame to permit the passage of traific when the apparatus is in an operative position on the roadbed, the platforms being hingedly connected together whereby certain of the platforms may be moved to an operative position.

3 In an apparatus of the characterv described, a main frame, an auxiliary frame projecting from each end of the main frame, surface treating blades carried by the auxiliary frames, means for supporting the main frame for transportation over the roadbed, a main platform removably secured to the main frame, auxiliary platforms forming extensions of the mam platform and being hingedly connected to the main platform to permit the passage of traffic when the appagatius is in an operative position on the road- 4 In an apparatus of the character descrlbed, a main frame, an auxiliary frame pro ecting from each end of the main frame, surface treating blades carried by the auxiliary frames, means for supporting the main frame for transportation over the roadbed, acmain platform secured to the main frame, an extension platform hingedly connected along each longitudinal edge of the main platform and adapted to be moved to an operatlve position to permit the passage of traffic when the apparatus is in an operative position on the roadbed.

5 In an apparatus of the character descrlbed, a main frame, an auxiliary frame projecting from each end of the main frame, surface treating blades carried by the auxiliary frames, transporting means for supporting the main frame above the roadbed, and supporting means for elevating the wheels at oneend of the main frame and including means for transporting said end when the apparatus is moved transversely of a cross road.

6. In an apparatus of the character described, a main frame, an auxiliary frame projecting from each end of the main frame, surface treating blades carried by the auxiliary frames, transporting means for supporting the main frame above the roadbed, means for slidably mounting one of the blades in an auxiliary frame, and means for adjusting vertically the opposite ends of some of the blades with one end being adjustable independently of the other end.

7. In an apparatus of the character described, a main frame, an auxiliary frame projecting from each end of the main frame, a support elevated above each auxiliary frame, a plow blade slidabl mounted in the.

support, and means provi ing for an ular adjustment of saidblade relative to the orizontal whereby the angle of the cut made by the blade may be varied, a plow blade in one projecting from each end of the main frame,

a plow blade slidably mounted in each auxiliary frame, means providing for angular adjustment of said blade relative to the horizontal whereby the angle of the cut made by the blade mav be varied, a plurality of blades co-operating with the plow blades for trimming and sloping the shoulders built up by the plow blade at opposite edges of the road, and means for vertically adjusting the opposite ends of the last mentioned blades.

' 9. In an apparatus of the character described, a main frame, an auxiliary frame projecting from each end of the main frame, a plow blade slidably mounted in each auxiliary frame, means providing for angular adjustment of said blade relative to the horizontal whereby the angle of the cut made by the blade ma be varied, and a plurality of blades for trlmming and sloping the shoulders built up by the plow blade at opposite edges of the road, certain of the blades being located in planes which are approximately at right angles to the planes passing through the, other blades.

10. In an apparatus of the character described, 11. low hun main frame, an auxiliary frame projecting from eachend of the main frame, a plow blade slidably mounted in each auxiliary frame, and means providing for angular adjustment of said blade relative to the horizontal whereby the angle of the cut made by the blade may be varied, a second blade cooperativewith the plow blade for dressing the surface of the shoulder built up by the plow blade.

11. In an apparatus of'the character described, a main frame, an auxiliary frame "projecting from each end of the main frame,

a plow blade slidably mounted in each auxiliary frame, means providing for angular adjustment of said blade relative to the horizontal whereby the angle of the cut made by the blade is made, a second blade cooperative with the plow blade for dressing the surface of the ground acted on by the plow blade,

and a short plow blade secured to the end of the second blade for raising and spreading the material evenlyover the surface of the ground.

12. In an apparatus of the character described, a mam frame, an auxiliary frame projecting from each end of the main frame. a mold board having an extensionprovided moldboard, a guide secured to each auxiliary.

frame and slidably receiving the extension, a shaft carried by the moldboard, a worm -rigid with the shaft and meshing with the rack whereby rotation of the worm will cause reciprocation of the blade, and means for pivotally mounting one end of the guide and means for adjustably positioning the opposite end of the guide. Q

14. In an apparatus of the character described, a main frame, an auxiliary frame projecting from each end of the main frame, a support elevated above each auxiliary frame, a moldboard having an extension provided with a rack, a plow blade secured to the moldboard, a guide secured to the support and slidably receiving the extension and means for causing reciprocation of the extension of the moldboard in the guide.

15. In an apparatus of the character described, a main frame, an auxiliary frame projecting from each end of the main frame, a support elevated above each auxiliary frame, a moldboard having an extension provided with a rack, a plow blade secured to the moldboard, a guide secured to the support frame and slidably receiving the extension,

means for causing reciprocation of the extension of the moldboard in the guide, an arcuately shaped bar having a plurality of perforations, one end of the guide provided with a bolt to be received by any one of the perforations in the bar for varying the-horizontal position of said end of the guide, and means for pivotally mounting the opposite end of the guide.

17. In an apparatus of the character described, a main frame, an auxiliary frame projecting from each end of the main frame,

a plow blade slidably mounted in each auxiliary frame, means providing for angular ada plurality of blades adjustably mounted on the end frames, a plurality of traction wheels 5 carried by the main frame and normally out of engagement with the roadbed, means normall supporting the main frame and the trac wheels above a roadbed for transortation alon the roadbed, and means for owering the rst mentioned wheels while causing elevating'of the main frame and second mentioned wheels.

19. In an apparatus of the character described, a main frame, an auxiliary frame projecting from each end of the main frame,

a plurality of blades adjustably mounted on the end frames, a plurality of traction wheels carried by the mam frame and normally out of engagement with the roadbed, means norso mally supporting the main frame and the track wheels above a roadbed for transportation along the roadbed, nuts secured to the main frame, screws supporting the first mentioned wheels and threaded into the nuts, and

means for manually rotating the screws.

20. A low slung main frame adapted to be disposed lengthwise across a roadbed, auxiliary frames projecting from each end of the main frame and co-operating shoulder treating elements carried by the auxiliary frames and projecting outwardly from the ends of the main frame, and means supporting the main frame for transportation over the roadbed.

21. A low slungmain frame adapted to be disposed lengthwise across a roadbed, aux iliary frames projecting from each end of the main frame and co-operating shoulder treating elements carried by the auxiliary frames and projecting outwardly from the ends of the mainframe, means supporting the main frame for transportation over the roadbed, and means co-acting with the opposite edges of the hard roadbed for maintaining the frame at substantially a right angle to the edges of the roadbed to provide for a uniformity of contour of the shoulders.

22. A low slung and relatively narrow frame adapted to be disposed lengthwise across a roadbed, means for transporting the main frame along the roadbed, shoulder treatdisposed lengthwise across a roadbed, auxiliary frames carried at the opposite ends of the main frame and projecting over the shoulders of the road which are adapted to be treated, co-operating shoulder trimming elements supported in the auxiliary frames in operative relation for treating the shoulders, and means adjacent the end of each end of the main frame co-operating with the edges of a hard roadbed for aiding in maintaining the main frame at substantially a right angle to the line of travel of the main frame to pro- :iide for a uniformity of contour of the shoulers.

25. A low slung main frame adapted to be disposed lengthwise across a roadbed, auxiliary frames projecting from each end of the main frame and above the plane passing through the top of the main frame, co-opcrating shoulder trimming elements carried by the auxiliary frames, means for adjustably positioning the trimming elements in the auxiliary frames toprovide for a predetermined shape of each shoulder at each side of the roadbed, and means for supporting the main frame for transportation over the roadbed.

26. A low slung main frame adapted to be disposed lengthwise and transversely across a hard roadbed, an auxiliary frame projecting ing from each end of the main frame, a plow blade projecting from each auxiliary frame for building up the shoulders contiguous to the roadbed, a blade in each auxiliary frame and co-operating with a plow blade for moving excess earth towards an edge of the roadbed, a blade in each auxiliary frame, co-operating with the last-mentioned blades for trimming the shoulders which have been built up by the first-mentioned blades, and means for supporting the main frame for transportation over the hard roadbed.

27. A low slung main frame adapted to bedisposed lengthwise and transversely across a hard roadbed, an aux-iliary frame projecting from each end of the main frame, a plow blade projecting from each auxiliary frame for building up the shoulders contiguous to the roadbed, a blade in each auxiliary frame and co-operating with a plow blade for moving excess earth towards an edge of the roadbed, a trimming blade in each auxiliary frame co-operating with the last-mentioned blades for trimming the shoulders which have been built up by the first-mentioned blades, a plu- I rality of means for adjusting the blades in order to provide a predetermined contour of each shoulder, and means for supportin the main frame for transportation over the ard roadbed.

28. A low slung main frame adapted to b disposed lengthwise and transverse across a hard roadbed, an auxiliary frame project.- ing from each end of the main frame, a plow blade projecting from each auxiliary frame for building up the shoulders contiguous to the roadbed, a blade in each auxiliary frame .and co-operating with a plow blade for removing excess earth towards an ed e of the roadbed, a blade in each auxiliary rame cooperating with the last-mentioned blades for trimming the shoulders which have been built u by the first-mentioned blades, a plurality of means for adjusting the blades in order to provide a predetermined contour of each shoulder, and means at the opposite ends of the main frame and engageable with the edges of the hard roadbed for aiding in maintaining the frame at substantially right angles to the line of travel of said frame to provide for a uniformity of the contour of the shoulders, said last-named means supporting the Imain frame for transportation over the road- 29. A low slung main frame adapted to be I disposed lengthwise and transversely across a hard roadbed, an' auxiliary frame projecting from each end of the main frame, a plow blade projecting from each auxiliary frame for building u the shoulders contiguous to the roadbed, a lade in each auxiliary frame and co-operating with a plow blade for movin excess earth towards an edge of the roadbe l, a blade in each auxiliary frame co-operatin with the last-mentioned blade for trimming the shoulder which has been built up by the first-mentioned blades, and means for su porting the main frame for transportatlon over the hard roadbed, the inner ends of the blades bein normally disposed above the plane passing t lrough the top of the main frame.

30. A low slung main frame ada ted to be disposed lengthwise across a road ed, auxiliary frames projecting from each end of the main frame and co-o crating shoulder treating elements carried y the auxiliary frames and projecting outwardly from the ends of the main frame, and means carried by the main frame for causin the main frame to be moved over the road ed.

CHARLES EDWIN HAIR.