US1764270A - Road-shoulder-finishing machine - Google Patents

Description

June 17, 1930.

H. K. LEHMER ROAD SHOULDER FINISHING MACHINE Filed Oct. 5, 1928 s Sheets-Sheet June 17, 1930. H. K. LEHMER ROAD SHOULDER FINISHING MACHINE Filed Oct. 5, 1928 3 Sheets-Sheet 2 Q 3 wwwhsw Q 3 wwww June 17, 1 930.

H. K. LEHMER ROAD SHOULD ER FINISHING MACHINE Filed Oct. 5, I928 3 Sheets-Sheet '5 Patented dune i7, Edd

sate

HERMAN K. LEHMER, OF ROCKFORD, ILLINQIE BOAD-SHOULDER EINIfiHING MAEHINE Application filed October 5, 1928. Serial Ea, 310,511.

This invention relates to a road shoulder finishing machine, namely, a machine for cutting the earth shoulders flush with the pavement and shaping the side slope,'as well as the ditch, and even the back slope.

The principal object of my invention is to provide a machine for the purpose referred to having an endless chain of ground cutting and scraping buckets operating on a frame carried by a truck or similar vehicle adapted to run on the pavement, the said frame having guides for causing the buckets to out precisely to the desired contour at the shoulder, side slope and ditch, and having means for adjusting the inclination thereof with respect to a horizontal to determine the slope of the shoulder, and also means for adjusting the elevation of the frame as a whole for a purpose presently to appear. An important additional feature lies in the provision of an auxiliary frame swingably mounted on the outer end of the main frame having a smaller endless chain of ground cutting and scraping buckets operating in guides provided on said frame to cut the back slope at the desired angle to the ditch and prevent the dropping back of earth dug out from the ditch by the other buckets.

Other important objects of the invention 3 arer 1. To provide a scraping blade on the main frame as well as on the auxiliary frame so disposed that the buckets operate lengthwise thereof in front of the same, the blade on the main frame being conformed to the desired contour of the shoulder and side slope and the blade on the auxiliary frame being conformed to the desired contour of the ditch and back slope. The function of these blades 40 is to keep the dirt from spilling out in back of the buckets and scrape the surface smooth, to the end that a clean job is done. 2. To provide a chute on the main frame under the return flight of buckets which have \15 just been emptied, the said chute terminating at the end of the scraping blade. The function of this chute is partly that of preventing the messing oi the road with the dirt that clings to the buckets just enough to stay in i when the buckets are unloaded into a truck traveling on the pavement alongside the machine, and still not enough to remain in the buckets the full length of the flight back to the work. I refer to provide on the outer end of said chute a swingable chute which, 56 in one position of manual adjustment, catches the dirt unloaded from the buckets and guides the discharge thereof into the truck disposed to receive it, and, in another position of manual adjustment, is arranged 60 to catch the dirt as it is unloadedfrom the buckets and prevent the discharge thereof into the truck so that the dirt is conveyed through the main chute back to the shoulder, as, for example, where a fill is'ito be as made. It is also contemplated that the swingable chute may be adjusted to intermediate positions where part of the dirt is unloaded into the truck and the remainder conducted to the shoulder through the chute. The swingable chute also is of advantagein that it enables stopping the discharge of--dirt when there is no truck disposed to receive it," as for example where one truck has just been filled and another is being brought up into 7 position.

3. To provide a guide roller suitably mounted on the frame of the truck carrying the machine, which is arranged to run along the edge of the pavement so as to keep the machine operating on a straight line to finishthe shoulder to a uniform'width, the said roller being set at an acute angle to the vertical and having a grooved periphery to enable the same to keep its position despite any as unusual side thrust or kick incident to the buckets runnin into a stone, root, or other obstruction, it being evident that with the buckets operating outwardly from the pavement, the sudden thrust would be suiiicient 590 to throw the entire machine out of line. The guide roller is suitably adjustable for operation at di'herent distances from the side of the truck according to the width of the shoulder to be finished,

The invention is illustrated in the accompanying drawings, in which Figure l is a rear view of my improved machine, the same serving to indicate the method of operation thereof, a portion of Wt the chutes being shown in section and the auxiliary frame with its buckets for cuttin the back slope being removed and the sha t for driving the same bein shown in section; Fi 2 is an enlarged vertical sectional detai taken on the line 22 of Fig. 1, looking in the direction of the arrows, showing the guides provided on the frame for the buckets and the scraping blade serving as a follower or dirt catcher for the buckets;

Fig. 3 is a plan view of Fig. 1;

Fig. 4 is a fragmentary rear view showing the auxiliary frame with the buckets thereon cooperatin with the buckets of the main frame in cleaning outthe ditch and cutting the back slope; and

Fi 5 is a fragmentary view taken on the line 5-5 of Fig. 3.

The same reference numerals are applied to corresponding parts throughout the views.

In the construction and finishing of earth shoulders alongside paved roads, it has heretofore been the practice to employ teams with drags, blade graders or slip-wheelers, and men with shovels and rakes to shape and finish the shoulders, all of which meant considerable manual labor and proportionately slowwork and high cost. The primary object of the present invention is toprovide a machine so designed and constructed that the entire 'ob, that is, not only the shoulders I but the si e slopes, ditches and back slopes as well, can be handled by power in a fraction. of the time otherwise taken, as well as at a small fraction of the cost otherwise in- 'volved, while at the same time insuring the soi making of shoulders, side slo es, ditches and back slopes of absolute uni ormity.

The machine, as clearly appears in Figs. 1 .and 3, comprises a frame 6 of obtuse triangular sha having the sides 7 and 8 formed of I- ams braced at 9 and the base 10 formed of channel irons. The, frame is pivotally supported by the frame member 7 substantially centrally, as indicated at 11, on an extension 12 of the frame of a truck or other suitable vehicle 13, only the rearward portion of which appears in the drawn s. The latter is arranged to run on the sla pavement indicated at P and forms a support for an engine 14 and transmission 15 serving as the source of power for the o ration of'the machine of my invention.

e power is transmitted from a sprocket 16 to a sprocket 17 by the chain 18. The sprocket 17 is fixed on one end of shaft 19 received in a bearing on the frame member 8. Another sprocket 20, on the other end of the shaft 19 has a long chain 21 operating thereon to transmit power to the sprocket 22 fixed on shaft 23 mounted in a bearing on the lower extremity of the frame member 8. The shaft 23 has two sprockets 24 and 25 mounted thereon at or near opposite ends thereof. The former serves to drive an endless chain 26 and the latter serves to drive another endless chain 26. I shall hereinafter refer to the endless chain 26 as the main chain of buckets, inasmuch as it operates on the main frame 6, and shall hereinafter refer to the endless chain 26' as the auxiliary chain of buckets since it operates onthe auxiliary frame 6. The main chain 26 operates on an approximately obtuse triangular course, the one turning point being determined b the drive sprocket 24 on the shaft 23 an the other two turning points being determined by idler sprockets 27 and 28. The frame 6 extends away from the truck 13 far enough and to a sufiicient height to permit a truck or other vehicle 13' running on the pavement P'to run alongside the truck 13 beneath the end of the frame to have dirt dumped into the same. The sprocket 27 is supported on the upper extremity of the frame member 8 and the s rocket 28 is supported on an extension of t e frame member 10. The three-sprockets my Patent 1,664,634, issued April 3, 1928,

each being formed of two sprocket gears in fixed spaced relation arranged to receive the projecting ends of cross-pins 29 of the links 30 of the chain 26 between the teeth thereof, the chain being caused to operate between the spaced sprocket gears forming each of said sprockets. The special construction of the sprockets, as fully described in my patent just referred to, prevents the chains from running off when the same are placed under side thrust in the operation of the machine, it beingevident that there will be a certain amount of side thrust due to the fact that the machine advances steadily, or substantially so, in the direction indiios catedby the arrow in Fig. 3, during the .wardly disposed by reason of the inclined portion 33 of the rear wall of the bucket to cause the thrust on the bucket in scraping to be divided more evenly between the forward a d rearward pins of' the link on which the bucket is mounted. The inclination of' the rear wall, shown at 33, is also of advantage in that it forms a pocket in the bucket facilitating the scooping action. The crossins 29 also cooperate with rollers 34 mount on the buckets 31 in the operation of the buckets along guides 35 provided in the frame member 10, as will presently frame desired.

merely involve changes in the inclination of the frame. I, therefore, provide means for adjusting the frame of the machine as a whole about the point Has a pivot to suit requirements. While any suitable means might be provided for adjusting the frame 6 about its pivot 11, I prefer to employ chains or other flexible elements 43 secured at one end to the frame member 8, as at 44, and secured at the other end to a drum 45 onto which the same are arranged to be wound according to the inclination of the This form of means is suitable for the purpose described because of the fact that the pivot 11 is so located that the ri ht hand portion of the frame 6, as viewe in Fig. l, overbalances the left hand portion. Thus, the chains 43 are under tension since they serve to hold the frame against its tendency to turn in a clockwise direction about the pivot 11 as a center. The drum 45 has a ratchet 46 and pawl .47 cooperating therewith normally to hold the same against turning in a clockwise direction as viewed in Fig. 1. The cross bar 48 provided on the end of the drum serves as a part onto which a pipe of the proper length for the amount of leverage required may be applied to permit of the turning of the drum by hand in either direction to elevate or lower the lower end of the frame. The slope of the shoulder S can, therefore, be predetermined very accurately.

Variations in the inclination of the frame (3 for different slopage of the shoulders in volves the necessity for adjusting the elevation of the frame 6 as a whole in order to have the buckets 31 and scraping blade clear the edge of the pavement P designated by the reference numeral 50. In other words, if the pivot point llvwere left unchanged as to elevation and the drum were adjusted to give greater inclination to the lowerend of the frame. 6, the scraping blade IO-would gouge into; the edge of the pavement P at the point 50. For this reason I'have provided means for adjusting the elevation of the extension 12 and maintaining the same at any desired adjusted elevation. A trailer wheel 51 is mounted in a fork 52 pivoted at 53 to the extension 12 of the frame of the truck 13 and is arranged to run on the pavement P. Any suitable form of turnbuckle means may be employed for holding the fork 52 in different positions of angularit with respect to the rame extension 12. n the present case I have shown yokes 54 and 55 connected, respectively, to the extension 12 and fork .52 and having a turnbuckle rod 56 connecting the same. The turning of the latter is arranged to' adjust-the'spaced relation of the yokes 54and 55 in a manner requiring no explanation so as to raise orlower the extension 12 and accordingly raise or lower the pivot 11 to secure the desired clearance between the buckets 31 and blade 40 at the point 50 on the pavement. A truss rod 57 having an adjustable turnbuckle thereon is suitably provided extending between the fork 52 and the frame 6 to prevent any possible side play of the fork in the operation ,of the machine, it being evident that the wheel 51 assumes a considerable part of the load of the machine.

In the operation of the machine I have found that there is often a tendency for some of the dirt to cling to the buckets when the same are unloaded into the truck 13 and that a certain amount of such dirt is apt to be jarred loose and dropped onto the pavement in the flight of the buckets from the sprocket 27 to the sprocket 28. Inasmuch as this would mean the messing of the pavement and perhaps the necessity for additional work in cleaning the same, I prefer to provide a chute 60 beneath the buckets between the points referred to, the said ,chute being suitably supported from the frame by hangers. 61. The chute terminates at :its upper end-fslightly short of the sprocket 27 so as to give the buckets 31 suflicient opportunity -to unload into the truck 13' under normal conditions. The

,ohute terminates at itslower end adjacent the-end of thejblade40. Thus, any dirt jarred loose from the buckets in traveling from the sprocket 27', to the sprocket 28 is caught in the -.chuteand conducted to the shoulder S. The pavement is, therefore, lefttolerably clean, at least clean enough for all practical purposes.

The machine is manifestly designed to make a cut of uniform depth. At certain places, however, low spotsare encountered which necessitate filling. While this may be done by hand shoveling, or otherwise, and a certain amount of filling will be done b the buckets scraping ground from a higi spot on the shoulder to a low spot, and likewise to a certain extent by the scraping blade 40, I; prefer to make provision whereby the discharge from the machine may be cut off wholly or partially whenever desired so that the dirt dug by the buckets, instead of being dumped into the truck 13, may be returned to the shoulder through the chute 60 to make such'fills as may be required. For this purpose I provide a chute 62 pivoted, as'at 63, on the upper end of the chute 60 and arranged to be placed in a position where it is co-extensive with the chute 60, as !indicated-ih' dotted lines in Fig. 1, so as to cut off the discharge of dirt into the truck, or to be'placed in a position, such as that indicated in full lines, in which position the discharge of dirt into the truck is substantially unobstructed. In the latter position the chute 62, as a matter of fact, acts as a guide ch'ute to minimize the danger of spillin adjusted position. It will be evident that' whenever a low spot is encountered the operator on the truck 13 may cut oh the discharge of the dirt by adjusting the chute 62, the chute 62 being brought closer to or farther from the dotted line position accordingly as more or less dirt is needed to make a fill. That is to say the chute 62 may, in certain instances, be placed in an intermediate position where part of the dirt is unloaded into the truck 13 and the remainder is conducted to the shoulder through the chute 60. The chute 2 may also be used to cut on the discharge of dirt when one truck which has just been loaded is being run away and another truck is being brought up into position. In that way there is no necessity for dumping any dirt onto the pavement or possibiy onto the operator of the truclr=13, nor, on the other hand, is there any. necessity for bringing the truck 13 to a halt when one truck has been loaded and another one is heing brought up into position.

1 have found that there is a tendency to throw the machine out of line whenever the buckets encounter a stone, root or other obstruction unless some means is provided to assume the sudden thrusts or kicks communicated to the truck. For that reason I- prefer to provide a guide roller 70, see Fig. 3. This roller has a grooved periphery and is disposed at an acute angle to the vertical and arranged to run along the edge 50 of the pavement 1 A shaft 71, suitably square in section, is slidably received in one or more bearings 72 carried on the frame of the truck 13 and has a downwardly bent end formed to provide an axle for the roller 70. The shaft '7? may be secured in any position of adjustment with respect to the truck frame by means of one or more set screws 73 serving to hold the shaft in the one or more bearings 72. Thus, the roller may be set for operation at diiierent distances with respect to the truck, it being understood that the present machine is intended for operation on shoulders of different widths and that the truck accordingly has to operate closer to or farther. from the edge of the pavement according to the width of shoulder desired.

In order to insure smooth operation of the roller 70 along the edge of the pavement I prefer to provlde a small plow blade 74 suitably supported with the bearing 72 in front of the roller 70 arranged to cut a furrow immediately alongside the edgeof the pavement and throw aside any stones, sticks or other obstructions, to the end that the roller 70 will not be prevented from operation on the edgeot the pavement. The ground thrown up by the plow blade 74 is preferably thrown back into the furrow by a scraper blade 74 supported behind the roller 70 with the bearing 72.

It is believed the foregoing description conveys a suficiently clear understanding of my invention without additional explanations. While reference has been made to various specific details of construction and arrangement it should be understood that the invention is not limited in these respects but that various changes might be made without seriously departing from the general spirit of the invention or without sacrificing many of its important advantages. For these reasons the appended claims have been drawn with a view to covering all legitimate modifications and adaptations.

1 claim:

1. A machine of the character described comprising, in combination, a portable carrier arranged to travel on a pavement, a frame mounted on said carrier in transverse relation thereto with one extremity overlying the side of the road and the other extremity overhanging the pavement alongside the carrier, and an endless chain belt having ground cutting and conveying means thereon carried by and operating on said frame, the portion of the frame overlying the side of the road having guideways provided thereon for determining the conformation of the road shoulder, the ground removed in the cutting of the shoulder being arranged to be dumped at the opposite end of the frame into a vehicle arranged to be run therebeneath.

2. A machine of the character described comprising, in combination, a portable carrier arranged to travel on a pavement, a frame mounted on said carrier in transverse relation thereto with one extremity overlying the side of the road and the other extremity overhanging the pavement alongside the carrier, an endless chain belt having ground cutting and conveying means thereon.

carried by and operating on said frame, the portion of the frame overlying 'the side of the road having guideways provided thereon for determining the conformation of the road shoulder, the ground removed in the cutting of the shoulder being arranged to be dum ed at the opposite end of the frame into 9. ve icle arran ed to be run therebeneath, the said frame being pivoted on a substantially horizontal" axis on said carrier and.

means for adjusting and holdingsaid 'rame in different positions of angulanty relative to the carrier to determine'the slopage of the road shoulder produced in the operation of said machine.

3. A machine of the character described comprising, in combination, a portable carrier arranged to travel on a pavement, a frame mounted on said carrier in transverse relation thereto with one extremity overlying the side of the road and the other extremity overhanging the pavement alongside the carrier, and an endless chain belt having ground cuttin and conveying means thereon carried byan operating on said frame, the portion of the frame overlying the s1de of the road having guideways provided thereon for determining the conformation of the road shoulder, the ground removed in the cutting of the shoulder being arranged to be dumped at the opposite end of the frame into a vehicle arranged to be run therebeneath, the said frame having a pivotal sup port on the carrier substantially centrally thereof permitting tilting adjustment in a substantially vertical plane, the pivot point being so located that the portion overlying the side of the road overbalances the other portion of the frame, and means acting between the carrier and the last mentioned portion of the frame for lowering the latter to various degrees accordin to the slope of the road shoulder to be produced.

1-. A machine of the character described comprising; in combination, a portable car-- rier arranged to travel on a pavement, a frame mdunted on said carrier in transverse relation thereto with one extremity overlying the side ofthe road and the other extremity overhanging the pavement along side the carrier, and an endless chain belt having ground cutting and conveying means thereon carried by and operating on said frame, the portion of the frame overlying the side of the road having guideways provided thereon for determinin the conformation of the road should-er, the ground removed in the cutting of the shoulder beingarranged to be dumped at the opposite end of the frame into a vehicle arranged to be run therebeneath, the said frame being pivoted relative to said carrier at an intermediate point for tilting adjustment in a substantially vertical plane to vary the slope of the shoulder produced in the operation of said machine, means for'holdlng said frame in different positions of angularity, and means on the frame whereby the elevation of the pivot relative to the pavement may be ad'usted whereby to adjust the elevation of t e frame as a whole for the purpose described.

5. A machine of the character described comprising a portable carrier arranged to travel on a pavement, a frame of generally obtuse triangular form mounted on said carrier in transverse relation thereto, the base portion of said frame overlying the side of the road and the apex portion overhanging the pavement alongside the carrier, and an endless chain belt having ground cutting and conveying means thereon carried by and operating on said frame, the base portion of said frame having guides for said belt whereby to determine. the conformation of the road shoulder, and the ground removed in the cutting of the shoulder being arranged to be dumped at the apex end of the frame beneath which aveliicle for receiving the same is arranged to be run.

61 A machine as set forthin claim 5 including a scraping blade mounted on the base portion of said frame behind the guides and consequently behind the belt operating therein, the lower edge of said blade being conformed to the desired contour of the road shoulder to be produced.

'2. In a machine as set forth in claim 5 wherein the guides in the base portion of said frame serve to determine the course of the belt to determine the contour of not only the road shoulder but also the side slope, a scraping blade mounted on the base portion of said frame behind said guides and consequently behind the belt operating therein, the lower edge of said blade being conformed to the desired contour of the road shoulder and side slope to be produced, i

8. A machine of the character described comprising a portable carrier arranged to travel on a pavement, a frame carried thereby disposed transversely in relation there to so as to have one end portion overlying vthe side of the road and the other end portion overhanging the'pavement alongside the carrier, an endless chain belt carried by and operating on said framehaving ground cutting and conveying means thereon, said frame being mounted for pivotal movement in a substantially vertical plane to determine the slope of the road shoulder produced in the operation of said belt, means for adjusting and holding said-frame in different positions of angularity relative to the carrier, and means on the frame for correspondingly adjusting the elevation of said frame as a whole relative to the pavement to afford operating clearance for the belt at the edge of the pavement.

9. A machine of the character described comprising in combination with a truck or other portable carrier arran ed to travel on a pavement, a frame ivotall supported on an extension of'the rame of said truck in transverse relation to the latter so that one end portion overlies the sideof the road and the other end portion overhangs the pavement alongside the truck, an endless chain belt carried by and operating on said frame having ground cutting and conveying means thereon, said frame having the portion overlying the side of the road prdvidedwith guides for the belt whereby to determine the conformation of the road shoulder produced, the pivot for said frame permitting tilting adjustmentin a substantially vertical plane, means for adjusting and holding said frame in different positions of angularity relative to the frame of the truck, and means for supporting the outer end of said truck frame extension arranged topermitadiusts ment ofthe elevation thereof relative to thepavement so as correspondingly to adjust the elevation of the frame as a whole relative to the pavement for the purpose described.

' 10. A machine of the character described comprising in combination with a truck or other portable carrier arranged to travel on a pavement, a frame supported by the latter in transverse relation thereto with one end portion overlying the side of the road and the other end portion overhanging the pavement alongside the truck, a main chain belt carried by and operating on said frame having ground cutting and conveying means thereon, the end portion of the frame overlying the side of the road having guides for the belt causing the operation of the latter on a predetermined course to form the road shoulder and side slope, an auxiliary frame mounted on the extremity of the main frame, and an endless chain belt operating thereon and driven with the main belt having ground cutting and conveying means thereon arranged to finish the ditch flush with the side slope and the back slope flush with the ditch.

11. In a machine as set forth in claim wherein the auxiliary frame is of elongated form pivoted at one end with reference to the extremity of the main frame, the endless chain belt thereon being operated from one end to the other thereof so as to form r the ditch and the back slope, means for adjusting said auxiliary frame to diderent positions of angularity relative to the main frame whereby to determine the angle of the back slope. I

12. A machine as set forth in claim 10 including a scraping blade on the end portion of the main frame which overlies the side of the road, said blade extending lengthwise of the guides on said portion. in back of the belt operating thereon, the edge of said blade being conformed to the desired contour of the road shoulder and side slope.-

13. A machine as set forth in claim 10 including a pair of scraping blades one of which is mounted on the end portion of the main frame overlying the side of the road and having the lower edge thereof conformed to the desired contour of the road shoulder and side slope, the said blade be ing disposed behind the chain operating on said main frame, and the other blade being mounted on the auxiliary frame behind the belt op rating thereon and-having the lower edge thereof conformed to the desired conerating thereon carryin ground cutting and conveying devices on tie outer side of the links thereof, and guides on said frame cooperating with the links of said belt for predetermining the course of the belt to cause the ground cutting devices to form a certain contour, said frame being arranged Ell to have movement'transversely with relation to the direction of travel of the belt, of a scraping blade mounted on said frame extending lengthwise of said guides and disposed behind the latter and consequently behind the belt with regard to the direction of movement of the frame, the scraping edge of the blade being conformed like the guides to the contour to be produced.

15, A. machine of the character described comprising, in combination, a truck or other suitable portable carrier, a frame of enerally obtuse triangular shape mounte on said truck in transverse relation thereto with the base portion overlying the side of the road and the apex portion overhangin the pavement alongside the truck, an en less chain belt operating on said frame having ground cutting and conveying buckets thereon, said belt being arranged to operate in such a manner that the buckets travel outwardly on the base portion with relation to the pavement to cut the shoulder to a predetermined contour and travel inwardly on one side of the frame to the apex end of the frame to dump the dirt, and a dirt catching chute carried by said frame on the other side thereof beneath the belt between the apex point and one end of the base substantially as and for the purpose described.

16rd machine as set forth in claim 15 including a scraping blade mounted on and extending lengthwise of the base portion of the frame so arranged that the belt operates in front of the same, the said scraping blade having the inner end thereof adjoining the lower or discharge end of said. chute,

17. A machine as set forth in claim 15 including a scraping blade mounted on and extending lengthwise of the base portion of the frame so arranged that the belt operates in front of the same, the said scraping blade having the inner end thereof adjoining the lower or discharge end of said chute, and a supplementary chute movable from an out of the way position to an operative position in which the same is adapted to catch dirt dumped from the buckets and conduct the same to the first mentioned chute to be con-. 'veyed back to the road shoulder.

18. A machine as set forth in claim 15 including a supplementary chute at the intake 5 end of the main chute movable from an out of the way position in which the same per-' mits substantially unobstructed dumping of the dirt from the buckets to an operative position in which the same is adapted to catch the dirt and conduct the same to the main chute for passage through the latter back to the road shoulder.

19. A machine as set forth in claim including a supplementary chute swingably 15 mountedon the intake end of the main chute and arranged to be adjusted from one extreme position in which the same permits substantially unobstructed dumping of dirt from the buckets to another extreme position in which the same catches the dirt and conducts the same to the main 'chute, the said supplementary chute being also arranged to occupy intermediate positions in which only part of the dirt is caught there- '25 by and conducted to the main chute, and manually operable means for adjusting said supplementary chute. I

20. A machine of the character described comprising the combination with a truck or other portable carrier arranged to travel on a pavement, a frame mounted transversely on said truck and overl ing the side of the road, and an endless belt operating on said frame havin ground workin devices therea5, on, of a e roller mounts on the side of said true and arranged to run along the edge of the pavement, said roller serving to assume the side thrust on the truck incident to the operation of said ground working devices.

'21. A machine as set forth in claim 20 including adjustable means in the mounting of said guide roller on the truck permitting variation in the spaced relation between the 5 roller and the truck whereby to determine the amount of overhang of the frame at the side of the road.

22. A machineas set forth in. claim 20 in-' eluding means in front of-the guide roller for cutting a furrow immediately alongside the edge of the pavement whereby to insure smooth operation of the roller on the edge of the pavement.

23. A machine as set forth in claim 20 ineluding means in front of the guide roller for cutting a furrow immediately alongside the edge of the pavement whereby to insure smooth operation of the roller on the edge of the pavement, and means behind the guide roller for returning the ground to the furrow.

24. In a machine as set forth in claim 5 wherein the guides in the base portion of .said frame serve to determine the contour ll of the side slope, a scraping blade mounted thereon working outwardly relative to the pavement, of a guide roller mounted on the side of said truck :and arranged to run along the edge of the pavement, said roller, serving to assume the side thrust inwardly on the truck incident to the operation of said ground working devices.

26. A machine of the character described comprising, in combination, a portable carrier arranged to travel on a pavement, a

frame mounted on said carrier in transverse relatlon thereto with one extremity overlying theside of the road and the other extremity overhanging the pavement alongside the carrier, and an endless chain belt having ground cutting and conveying means thereon carried by and operating on said frame, the endless chain belt in that portion of the frame overlying the side of the road being adapted to cut the road shoulder, the round removed in the cutting of the shoulder being arranged to be dumped at the .opposite end of the frame into a vehicle arranged to be run therebeneath.

27. A'machine of the character described comprising, in-combination, a portable carrier arrangedto travel on a pavement, a frame mounted on said carrier in transversev relation thereto with one extremity overlying the side of the road and the other extremity overhanging the pavement alongside the carrier, and an endless chain belt having ground cutting and conveying means thereon carried by and operating on said frame, the endless chain belt in that portion ofthe frame overlying the side of the road being. adapted to cut the road shoulder, the ground removed in the'cutting of the shoulder being arranged to be dumped at the oppositeend of the frame into a vehicle arranged to be run therebeneath, the said frame bein pivoted on the carrier on a substantial y horizontal axis for movement in a vertical plane, and means for adjusting and holding said frame n different positions of angularity dependmg on the slope of the road shoulder deslred.

28. machine of the character described comprising in combination, a portable carrier arranged to travel on a pavement, a

frame mounted on saidcarrier in transverse relatlon thereto with one extremity overlying the side of the road, and the other extremity overhanging the pavement alongside the carrier, an endless chain belt having ground cutting and conveying means 5 thereon carried by and operating on said frame, the endless chain belt in that portion of the frame overlying the side of the road moving outwardly relative to the pavement to cut the road shoulder, the ound 1 removed in the cutting of the should 2r being conveyed on the chain belt and dumped at the opposite end of the frame into a vehicle arranged to run therebeneath on the pavement, and means for restraining the 45' carrier and frame from movement on the pavement away from the shoulder.

29. A machine as set forth in claim 27 including means for adjusting the frame as a whole in elevation relative to the pave- 0 ment and support the same in adjusted position. 30. A machine as set forth in claim 27 wherein the said frame is supported on an extension of the carrier frame, the latter 25 being suitably supported on sprin s permitting a change in the elevation 0 said extension relative to the pavement, said ma= chine including means beneath the extension and operating betweensaid extension 30 and the pavement and arranged when adjusted to change the elevation of the frame and support the frame in adjusted position.

In witness of the foregoing I afiix my 35 signature.

- HERMAN K. LEHMER.

Images