US1410585A - Boad-working machine - Google Patents

Description

D. B. McCALL.

ROAD WORKING MACHINE. APPLICATION FILED AUG. 7, 1920.

1,410,585, Patented Mar. 28,1922.

5 SHEETS-SHEET l.

D. B. McCALL.

ROAD WORKING MACHINE.

APPLICATION FILED AUG. 7. 1920.

1,410,585, Patented Mar. 28, 1922 5 SHEETS-SHEET 2- D. B. McCALL.

ROAD WORKING MACHINE.

APPLICATION FILED AUGJ, 1920.

1,410,585. I Patented. Mar. 28, 1922.

5 SHEETSSHEET 3- Q a, /7/// lil D. B. McCALL.

ROAD WORKING MACHINE.

APPLICATION FILED AUG. 7. 1920.

1,410,585, Patented Mar. 28, 1922.

5 SHEETS.SHEET 4.

0. B. McCALL.

ROAD WORKING MACHINE- APPLICATION FILED AUG- 7; 1920- lfilfififi, Patented Mar. 28, 1922.

5 SHEETS-SHEET 5.'

7 surface of the roadway.

t me at Ta azz army lBe. it :lmown that- MCCALL, a citizen of qthelUnitedQ'States re siding at oscow, in the county of Folk and State of Taxas, have invented certain new and useful Improvements in Road- 'Working Machines, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to certain improve-- ments in road working machines, and it is an object of the invention to provide a device of this general character having novel and improved means whereby the same may efiectively scrape and'substantially level the Another object of the invention is to provide a novel and improved device of this general character embodying a spiral work,

ing member supported in a manner whereby the'same may be bodily shifted in a. direction transverse to the direction of travel of the machine and in accordance with the reprovide a novel and improved device of this general character comprising a spirally arranged working member,together with means adapted for coaction with said working member for cleaning the same when re quired,

The invention consists in the details of construction and, in the combination andarrangement of the several parts of my improved road working machine whereby certain important advantages are attained and the device rendered simpler, less expensive and otherwise more convenient and advantageous for use, as will be hereinafter more fully set forth.

The novel features of my invention will hereinafter be definitely claimed.

In order that my invention may be the mea e agent 19M;- are i no. comer,

Patented Mar, 28 192% better understood, I will now proceed to descrlbe the same with reference to the ac= companying drawings, wherein r Figure 1 me view in top dplan ofa roadworking machine constructe in accordance with an embodiment ofmy invention with a portion thereof diametrically disclosed.

Figure 2 is a view in side elevation of the structure as illustrated in Figure l.

F gure 3 is an enlarged. fragmentary view 1n top plan illustrating in detail the yieldable or compensating member comprised in the element for holding the ground working member against movement in a direction transverse to the direction of travel of the machine independently of the supporting structure for said working member.

Figure 4 is an enlarged fragmentary view 1n top plan illustrating in detail the yieldable connection between the alined sections comprised in the driven shaft carried by the supporting structure for the working member.

Figure 5 is an enlarged fragmentary view partly in section and partly in elevation illustrating in detail certain parts of the mechanism for operating the rotating working member and for mounting the forward portion of the supporting structure for said member.

Figure 6 is a fragmentary view partly in top plan and partly in section taken through the structure illustrated in Figure 5.

Figure 7 is a fragmentary view in side elevation of an end portion of the rotary working member and the supporting structure coacting therewith.

Figure 8 is a fragmentary view partly in elevation and partly in longitudinal section of .the structure illustrated in Figure 7.

Figure 9 is an" enlarged fragmentary view in top plan with a portion in section illustrating in detail the means whereby movement may be imparted in either direction to the supporting structure for the rotary working member.

Figure 10 is a view partly in elevation and partly in section illustrating in detail the mounting of the supporting structure for the rotary working member.

Figure 11 is an enlarged fragmentary view partly in elevation and partly in sec- L va;

-tion illustrating additional. details of the.

means for imparting movement to the sup porting structure for the rotary working member.

Figure 12 is an enlarged fragmentary view partly in section and partly in elevation illustrating the means herein embodied ber being fragmentarily shown in elevation,

and

Figure 15 is a fragmentary'view partly in top plan and partly in section illustrating a means for maintaining the structure illustrated in Figure 12 in neutral.

As disclosed in the accompanying drawings, T denotes a tractor, preferably of a caterpillar type, and which includes a frame extending forwardly of the traction mechanism and which frame embodies a supple- -mental frame 1 extending to one side of the main frame and at substantially right angles thereto. The end members or beams 2 of the supplemental frame are connected adjacent their inner ends by the beam or track 3 in parallelismwith the outer side beam or track 4 of the. supplemental frame and which beams 3 and 4 comprise a trackway along which is adapted to travel a supporting structure S. Each of the beams or tracks 3 and 4 in its upper and lower faces is provided'with the grooves 5 for a purpose to be hereinafter more particularly referred to.

The supporting structure S comprises two beams 6 arranged in parallelism and extending transversely of the supplemental frame 1 and are tied or connected adjacent their opposite end portions by the cross beams 7 and 8. The forward end portions of the beams 6 are continued by the upwardly inclined and converging extensions 9 of desired length and terminating in the spaced straight portions 10 arranged in parallelism. Interposed between the opposite extremities of the portions 10 are the upstanding bearings 11 having their upper end portions connected by the 'reinforcing or bracing member 12 so that the bearings 11 will be maintained rigid or against displacement.

Rotatably supported between the portions 10 is a disc 14 carried by the upper end portion of a shank 15. The upper peripheral portion of the disc '14 is provided with a' worm rack 16 with which is enga ed a worm 17. The worm 17 is carried by t e shaft 18 wardly of the converging extensions 9. The

shaft 18 is adapted to be rotated in any deinstrumentality of a crank 20 carried by the inner end portion'of said shaft, whereby the shaft 18 may be manually operated as required and in order to swing the shank 15 as the requirements of practice may necessitate.

The lower portion of the shank 15 is provided with a socket 21 in which is engaged the upstanding shank 22 comprised in the fork 23. The fork 23 rotatably carries a supporting wheel 24 which is adapted to travel over the roadway or other surface and whereby a support is provided for the forward end portion of the machine. By swinging the shank 1 5 in either direction beyond the vertical or preferably rearwardly, the forward portion of the machine, and more particularly the supporting structure S, may be lowered and vice versa.

The rear or inner bearing 11 is carried by a block 25, bolted, as at 26, or otherwise rigidly secured between the rear extremities of the portions 10. The block 25 and the bearing 11. carried thereby comprise two separable sections arranged side by side when in assembled relation, and depending from each section of the block 25 is a semispherical body 27. When the sections of the blocks 25 and the members 27 are assembled, a socket 28 is provided, the members 27 being clamped, as at 29, or otherwise held in proper relation.

Extending within the socket 28 through the forward wall thereof is a stub shaft 30 to the outer or exterior end portion of which is fixed a gear 31. The opposite or inner portion of the wall of the socket 28 is provided with a vertically disposed slot 32 arranged slightly to one side of the stub shaft 30, although this is not imperative.

Extending through the slot 32 is a tubular member 33 and the inserted end portion of the member 33 is provided with a head 34 contacting with the inner face or wall of the socket 28. The outer oropposite end portion of the tubular member 33 is provided with a substantially U-shaped head or casting 35, to the side arms 35 of which are secured the forward end portions of the downwardly inclined and rearwardly diverging beams 36.

The lower or rear portions of the beams 36 terminate in the depending portions 37 provided with the feet 38 riveted, as at 39, or otherwise secured to the opposite end portions of the blade 40. The blade 40 is arcuate in cross section and has its lower marginal portion formed into a knife edge sired manner but preferably through the intone 43. The forward end portion of each of.

the arms 42 is connected with the'adjacent beam 36 by a bracing or reinforcing member 44.

Fixed in each of the bearings 43 is anend portion of a stationary or non-rotating shaft 45 arranged at substantially the axial center of the blade 40.. Rotatably mounted on the shaft 45 and snugly fitting between the bearings 43 is a rotatable tubular shaft 46. The shaft 46 rotates about the stationary shaft 45 and, if desired, suitable anti-friction means may be interposed between the shafts 45 and 46 so that the shaft 45'may operate with a minimum of frictional resistance. This, however, is a well known mechanical expedient and a detailed illustration and description thereof is believed unnecessary.

Extending from substantially one end of the shaft 46 to the other is a spiral scraping blade B, said blade being continuous and encircling the shaft 46. The periphery of the blade B closely approaches the inner face or wall of the blade 40 and as the shaft 46 is rotated, the blade B, when the beams 36 are in proper position, engage the roadway or other surface and serves to efi'ectively scrape the same and at the same time carrying the material loosened thereby to one side of the machine, whereby provision is made to fill any ruts or the like which may be.in the surface being worked. This is facilitated in view of the fact that the blade 40 serves as a barrel to facilitate the travel of the loosened material lengthwise thereof. Said blade 40 also serves as an additional means to scrape the roadway or other surface and to facilitate the leveling of said surface.

One end portion of the shaft 45 has fixed thereto a gear 47 meshing with a gear 48 carried by the lower end portion of a vertically disposed shaft 49. The shaft 49 is rotatably mounted in the bearings 50 carried by the adjacent arm 42 and bearing 43 carried thereby. The upper end portion of the shaft 49 is provided with a gear 51 meshing with a gear 52 carried by the outer end portion of a transversely disposed shaft 53. The outer end portion of the shaft 53 is rotatably supported by an upstanding bearing 54 carried by the adjacent portion of the arm 42 while the inner'end portion of the shaft 53 is rotatably supported by a bearing 55 depending from' the adjacent beam 36.

The inner end portion of the shaft 53 has fixed thereto a gear 56 meshing with a car 57 fixed to the inner end ortion of a s aft 58. The shaft 58 exten s forwardly and substantially in, arallelism with the adscent beam 36 an extends within the sec et 28 through the tubular member 33. The end portion of the shaft 58 within the socket 28 is operatively engaged with the stub shaft 30 through the instrumentality of a universal joint 59, so that the shaft 58 may be driven through the stub shaft 30 to effect the requisite rotation of the tubular shaft 46 and also to permit the desired vertical adjustment of the beams 36 and the parts carried.

thereby without interfering with or hindering the desired rotation of said tubular shaft 46.

The assembled sections 27 of the socket member also provide a depending bearin 60 which rotatably supports the forward end portion of a drive shaft A in operative connection with the gear 31 through the gear 61 fixed to the forward end portion of the shaft A. The shaft A extends rearwardly and has its rear part rotatably supported b the side members 7 and 8 of the structure L and fixed to the rear end portion of the shaft A is a gear 62 meshing with a car 63 carried by the transversely dispose shaft 64 rotatably supported by the supplemental frame 1. The gear 63 is keyed to the shaft 64 for rotation therewith but in a manner whereby said gear 63 may move longitudinally or lengthwise of the shaft 64 as will be hereinafter more particularly referred to and for vghichreason the side beam 8 of the structure S has fixed thereto a bearing 65 through which the shaft 64 is freely disposed.- The gear 63 is interposed between the bearing 65 and the gear 62 so that when the structure S is moved in either direction longitudinally of the shaft 64, the gear 63 will be maintained in mesh with the gear 62.

The shaft 64 is operatively engaged at one end portion. as at 66. with a shaft 67 rotatably supported by the main frame of the tractor and herein disclosed as extending longitudinally thereof. The shaft 67 is adapted to be operatively engaged through the instrumentality of the chain 68 or otherwise as may be preferred with a motor M. The motor M may be of such construction as to also operate to drive the tractor or, if preferred, the motor for rotating the shaft 67 may be independent of the motor for of the forward sections of the shaft A are loosely supported within an elongated sleeve 70 and said adjacent end portions of the forward sections are connected by a spring 71 encircling the sleeve 70 and having its opposite end portion anchored as at 72 to the shaft sections. The tension of the spring 71 is sufficient to normally tie the forward sections of the shaft A for unitary rotation but in the event any undue obstruction or hindrance may be offered to the spiral blade B, the spring 71 will permit slight relative rotation between the forward sections of the shaft A. In the event that such obstructionshould ofier excessive resistance, the spring 71 will break. This, however, is of material advantage as the spring 71 may be readily and conveniently replaced while provision is made to prevent any injury to the other parts of the mechanism. It will be understood, however. under certain conditions when the operator observes that the blade B is not rotating, he can stop the r0- tation of the shaft 64 and take the necessary steps to remove the interference or obstruc tion.

As is particularly illustrated in Figure 1, the shaft 46 and the blade 40, which are substantially in parallelism, are arranged on an incline with respect to the longitudinal diameter or axis of the complete machine and which arrangement materially facilitates the functioning of the blades 40 and B.

During a working operation, it is of utmost importance that the blades 40 and be bodily shifted transversely of the machine and particularly to permit the advance of the blades may be maintained in substan tially a straight line independently of the variations of travel which may oc ur in the advance of the tractor. This bodily shifting of the blades 40 and B is also of material advantage in permitting said blades eitherlto work out from or into the ditch at one side of the roadway, the direction of travel of the material being dependent upon the direction of travel of the tractor when the blades are in working engagement with the roadway. v

Each of the beams 6 has depending therefrom the bifurcated plates 73 straddling the beams or trackways 3 and '4 from above. The arms 73 of each of the plates 73 above and below the coacting beam or track 3 or 4 are connected by the shafts 74 carrying the wheels or rollers 75 riding in the grooves 5 hereinbefore referred to whereby the supporting structure S is permitted to have movement lengthwise of the beams or tracks 3 and 4 with a minimum of frictional resistance.

The end members or beams 2 of the supplemental frame 1 at a point between the beams or tracks 3 and 4 are connected by the bar or beam 76 provided in its upper surface with a worm rack 77 and the intermediate portion of the bar or beam 76 is further supported by a bracket 78 depending from each of the beams 6. The bar or beam 76 is freely disposed through each of the brackets 78 so that no obstruction is offered thereby to the desired movement of the supporting structure S along the beams or tracks 3 and 4.

The beams 7 and 8 of the supporting structure S to one side of the shaft A are connected by the spaced beams 79. The beams 79 are substantially in parallelism and coplanar with the inner section of the shaft A. Rotatably supported by the beams 79 above the bar or beam 76 is a worm 80 in mesh with the worm rack 77, the opposite end portions of the worm being provided at the axial center thereof with the trunnions 81 disposed through and rotatably engaged with the beams 79. 81 adjacent the shaft A has fixed thereto a conical beveled frictionwheel 82 positioned between the beveled friction wheels 83 carried by a sleeve or barrel 84. The

sleeve or barrel 84 surrounds the adjacent portion or section of the shaft A and is provided in one end with an open slot 85 extending longitudinally thereof and through which is disposed a pin 86 carried by the shaft A. By this means the sleeve or barrel 184 is mounted upon said shaft for rotation therewith but capable of movement lengthwise of the shaft so that the sleeve 84 may be adjusted to position the wheels 83 in neutral or in a direction to cause either of the Wheels 83 to frictionally engage the wheel 82 in accordance with the direction in which it is desired to rotate the worm 80 and depending upon the direction in which it is desired to move the supporting structure S. The sleeve 84 may be moved longitudinally of the shaft A in any manner desired but, as herein disclosed, one end portion of the sleeve 84 is provided with the circumferentially disposed annular groove or channel 87 with which coacts in a conventional manner the operating lever 88. As is particularly illustrated in Figure 12, the lower end portion of the lever 88 is pivotally engaged with an arm or lug 89 positioned below the shaft A and suitably anchored to a bearing bracket 90 coacting .with the shaft A.

The lever 88, as particularly illustrated in Figure 15, is provided with an outstanding tooth 91 adapted to engage within a notch 92- carried by a rearwardly directed arcuate arm 93 also supported by the bracket 90 but positioned above the shaft A. When the tooth 91 is seated within the notch 92, the wheels 83 are ositively maintained in neutral yet but SlIght manual exertion is required to disengage the tooth 91 when it The trunnion is required to adjust the sleeve 84 to brin either of the wheels 83 into contact wit the wheel 82.

In practice, it is of utmost importance and advantage to provide means for maintaining clean the working edge of the blade B as otherwise there would be a tendency of the spaces between the convolutions of said blades becoming choked due to the material which would possibly adhere thereto.

The arms 42 at a point in advance of the bearings 4:3 are connected by a rod 94 preferably circular in cross section and which is non-rotatable. Surrounding the rod 94 but of a length less than the length of said rod is a sleeve'95 which is normally maintained 'at the limit of its movement in one direction, as occasioned by contact of the arm 42, through the medium of the expansible spring 96 interposed between the second arm 42 and the adjacentend of the sleeve 95. One end portion of the spring 96 is secured to the rod 94 while the opposite end portion thereof is secured to the adjacent end of the sleeve 95 so that the spring 96 also serves to constantly rotate .the sleeve 95 upwardly. The inner end portion of the sleeve 95 is also provided with a longitudinally disposed extension 97 and which forms part of a head 98 suitably secured to the end portion of the sleeve 95 extending entirely therealong.-

Extending rearwardly from the head 98 and the portion thereof constituting-the extension 97 are the cleaning fin ers 99, said fingers being spaced apart a istance substantially equal to the maximum space between adjacent convolutions of the blade B and areof a number one less than the number of said convolutions of the blade.

The spring 96 operates to normally maintain the cleaning fingers 99 out of contact with the blade B but when it is desired to effect a cleaning operation of said blade B,

4 the sleeve 95 is rocked in a direction to move said fingers 99 downwardly into the requisite contact with the blade B. In the present embodiment of my invention, this rocking movement of the sleeve 95 is accomplished through the medium of a forwardly directed rock arm 100 carried by the sleeve 95 and which has engaged with its outer or free end portion a flexible member 101 extending upwardly over a suitable guide 102 comprised in the frame 19. By pulling upon the flexible member 101, the operator may cause the fingers 99 to be brought into contact with the blade B. With the fingers 99 in contact with the blade B and as the shaft 46 rotates, the sleeve 95 will be caused to move along the rod 99, placing the spring 97 under compression. The rod 94 is provided with an outstanding pin 103 extending through a slot 104 produced in the wall of the sleeve 95 and extending longitudinally thereof, the inner end portion of the slot vigil osition, the operator releases the flexible member 101,-whereupon-the spring 97 automatically returns or moves the sleeve 95 to ts normal position. When the sleeve 95 is in its normal position, the sleeve 1'03; carried by the rod 94 is in contact with"; the lower longitudlnaledge ofthe slot 10% which is of alength greater than the opposedilongitudlnal slot. The slot 104: is of suchwidth that when the sleeve 95 is rocked downwardly to bring the fingers 99, into contact with the blade B, the pin 103 will substantially contact wlth the upper or shorterlongitudinal edge of the slot 104: so that said pin 103 will have the desired coaction with the inner cam edge 105.

It has also been found of particular advantage to provide means to brace the beams 36 against the lateral strain which. it's-imposed thereon when the bladejB' is in workmg contact with the road surface or the like and as herein embodied such means comprises a flexible element E connected at-one end to the rear end ortion of a beam ,36 and at its opposite end portion to thebeam 6 of the supporting structure remotefrom the a beam 36 to which the element E is seciired. The element E, as herein set forth, comprises two sections having their adjacent The beams 36 are connected by a trans-' versely directed member 107 and operatively engaged with each end portion of the member 107 is the lower extremity of a vertically disposed rod 108. The upper end portion of each of the rods 108 is operatively engaged with a crank 109 carried by a horizontally disposed shaft 110 rotatably supported by the frame 19. Each of the shafts 110 has fixed thereto a worm wheel 111 meshing with a worm 112 carried by a transversely d posed sha t 113 re tatebly s pported by the frame 19. The shaft 113 has' fixed thereto a hand wheel 114. The cranks 109 are reve'rsely directed so that the blades B and 40 may be virtually adjusted in accordance with the incline desired or can be substantially horizontally disposed. This requisite vertical adjustment of the blades B and 40 is readily obtained by rotating the hand wheel 114 in the necessary or required direction.

From the foregoing description it is thought to be obvious that a road working machine constructed in accordance with my invention is particularly well adapted for use by reason of the convenience and-facility with which it may be assembled and operated, and it will also be obvious that my invention is susceptible of some change and modification without departing from the principles and spirit thereof and for this reason I do not wish to be understood as limiting myself to the precise arrangement and formation of the several parts hereln shown in carrying out my invention in practice except as hereinafter claimed.

I claim:

1. A road working machine comprislng a portable body, a supporting structure mounted thereon for movement in a direction transversely to the direction of travel of the portable body, a scraping element carried by the supporting structure, said supporting structure extending in advance of the portable body, and supporting means for the forward portion of said supporting structure riding over the surface'upon which the portable body traverses, said supporting means having swinging movement about a substantially horizontally disposed axis to vary the position of the scraping element relative to the surface over which the machine traverses.

2. A road working machine comprising a portable body, a supporting structure mounted thereon for movement in a direction transversely to the direction of travel to the surface over which the machine traverses.

3. A road working machine comprising a portable bod a spiral working member carried there y, means for bodily shifting the spiral working member in a direction transverse to the direction of the portable body and maintain the same angle of the workmg member with respect to the direction of travel of the machine, means for :0

tating the spiral working member, and a scraplng blade positioned rearwardly of the spiral working member and movable therewith when the spiral working member 1s shifted transversely.

f4. A road working machine comprising a portable body, a spiral working member carried thereby, means for bodily shifting the spiral working member in a direction transverse to the direction of the portable body and maintain the same angle of the working member with respect to the direction of travel of the machine, means for rotating the s iral working member, and a scraping blad spiral Working member and movable therewith when the spiral working member is shifted transversely, said blade being arouate in cross section and operating as a barrel to facilitate the functioning of the spiral working member.

5. A road working machine comprising a portable body, a supporting structure mounted thereon and movable in a direction transverse to the direction of travel of the portable body, means for shifting the supporting structure in either direction, and scraping means carried by the supporting structure, said scraping means at all times having the said angular relation to the direction of travel of the machine.

6. A road working machine comprising e positioned rearwardly of the a portable body, a rotary scraping element carried thereby, the axis of said element be ing dlsposed in a direction transverse to the direction of travel of the portable body,

means for rotating said scraping element, and mechanism operated from said last named means for bodily shifting the scraping element in a direction transverse to the direction of travel of the portable body and maintain the same angle of the axis of the.

element with respect to the direction of travel of the machine.

7. A road working machine comprising a portable body, a supporting structure mounted thereon, a pair of beams, a coupling connecting similar ends of the beams and the supporting structure and permitting the beams to have vertical movement, a rotary scraping element sup orted by the beams, a shaft supported y one of the beams and in driving connection with the rotary scraping element, a shaft carried by the supporting structure and in drivin connection with the shaft carried by the am, and means for rotating said second shaft.

8. A road working machine comprising a portable body, a supporting structure mounted thereon, a pair of beams, a coupling connecting simllar ends of the beams and the supporting structure and permit! ting the beams to have vertical movement, a rotary scraping element supported b the beams, a shaft supported by one o. the

beams and in driving connection With the rotary scraping element, a shaft carried by the supporting structure and in driving conncction with the shaft carried by the beam, means for rotating said second shaft, said supporting structure being movable with respect to the portable body, and coacting means carried by the supporting structure and the second named shaft operating at will to move said supporting structure in different directions.

9. A road working machine comprising a portable body, a supporting structure mounted thereon, a pair of beams, a coupling connecting similar ends of the beams and the supporting structure and permitting the beams to have vertical movement, a rotary scraping element supported by the beams, a shaft supported by one of the beams and in driving connection With the rotary scraping element, a shaft carried by the supporting structure and in driving conncction with the shaft carried by the beam, means for rotating said second shaft, said second named shaft comprising separable sections, and yieldable means for connecting said sections and normally causing the same to have unitary rotation.

10. A road Working machine comprising a port-able body, a supporting structure mounted thereon, a pair of beams, a coupling connecting similar ends of the beams and the supporting structure and permitting the beams to have vertical movement, a rotary scraping element supported by the beams, a shaft supported by one of the beams and in driving connection With the rotary scraping element, a shaft carried by the supporting structure and in driving con nection with the shaft carried by the beam, means for rotating said second shaft, and means connecting one of the beams and the supporting structure for holding the beams and the rotary scraping element carried thereby against undue independent move ment in a direction axially of the rotary scraping element.

In testimony whereof I hereunto affix my signature.

DANIEL B. MQCALL.

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