US2445472A - Support and traction of implements - Google Patents

Description

A. F. BUTCH SUPPORT AND TRACTION OF IMPLEMENTS July 20, 1948.

3 Sheets-Sheet 1 Filed Aug. 24, 1944 ADAM .F. BUTCH A. F. BUTCH SUPPORT AND iRACTION OF IMPLEMENTS July 20, 1948.

3 Sheets-Sheet 2 Filed Aug. 24, 1944 July 20, 1948. A. F. BUTCH 2,445,472

SUPPORT AND TRACTION 0F IMPLEMENTS Filed Aug. 24, 1944 3 Sheets-Sheet 3 WKW ADAM F. BUTCH for example. In accordance with this invention the forward ends of the tubes [9 are detachably coupled with a tiltable member or part of the motor truck or other equipment and in the embodiment specifically illustrated such tiltable part is the load carrying body 20 of a conventional dump truck. As is well understood, such bodies are commonly supported on a separate frame comprising a pair of transversely spaced but longitudinally extending channels 2| and the frame thus provided is pivoted on the principal frame l of the motor truck as at 22 (Figure 3). Means, not shown, is commonly provided to lift the forward end of the body 2!! thereby tilting the body about pivot 22 whereby the load will slide out the back end of the body. In preparing a motor truck of this type for use with the attachment of the invention I weld or otherwise suitably secure an apertured ear 23 to the rear end portion of each of the channels 2| of the body frame and to limit the downward movement of the forward end of the tubes I9 I secure the ends of :a plate 24 to the upper surfaces of the 1owermost of the inwardly directed flanges of the channels '2! as indicated in Figures 1 and 4. The apertures in ears 23 loosely receive the tubes l9 so that these tubes may be readily slid into and out of the sockets thus provided for them. 7 7

It will be observed that when the body 23 is in lowered or horizontal position the tubes ill will be cantilevered outwardly for suspension of the frame II), II as shown in full lines in Figure 1. To hold the tubes IS in proper position a collar 25 is secured to each of them for abutment against the forward face of each of the plates 1 6 and an aperture is provided intermediate the collar and the rear end of each of the tubes to receive a readily retractable pin 26 which, when the parts are assembled, is on the opposite side of'the plates l6. In assembling the parts the pins 26 are removed and the tubes l9 are slid forwardly in their sockets sufficiently to allow their rear ends to clear at plate I 6 after which they are moved rearwardly to project their end portions through the plate 15 whereby the pins 26 may be inserted.

Swivably supported in depending position from the base portion of the triangular frame It], I l is a ring 28 preferably of a length of metal T section as shown in Figures 3 and 7. This ring is held in position below the frame [0, II by the hook portions, l8 of the plates l6, by the hooks 29 which are rigidly secured to and extend downwardly from the angles l0, and by the hooks 38 which are rigidly secured to and extend downwardly from an angle member 3| which spans the members III as shown in Figure 2. Thus the ring 28 is operatively attached to the frame [0, II but is free to rotate with respect to this frame upon its own principal axis. The horizontal flange of the ring 28 is provided with a series of circumferentially spaced apertures 32 to receive the pin 33 extending down through an aperture in the angle 3| whereby the ring 28 may be locked in the selected angular position. Welded or otherwise rigidly secured to the outer surface of the vertical web of the ring 28 and positioned on either side of the ring is a pair of rearwardly and downwardlycurved plates 34 to the lower portion of which is secured a scraper blade 35. In accordance with usual practice, this blade may be provided with a replaceable hardened steel cutting edge member 36. It will be understood that by rotating ring 28 with respect to the frame I0, H the angularity of the blade 35 with respect to the direction of movement of the complete assembly may be varied as desired whereby the materials accumulated in front of the blade when in use may be moved to the right or the left as desired.

Referring to Figure 1 which shows the apparatus attached to the rear of a conventional motor truck of the load dumping type in the manner explained above, it will be observed that if the body 28 of the truck is in lowermost or horizontal position the cantilevered tubes l9 hold the frame In, H and ring '28 in elevated position whereby the blade 35 including the edge 36 is held above the surface of the ground or roadway on which the truck is supported. In this position the complete apparatus may be readily transported from one location to another. When it is desired to employ the attachment apparatus as an earth scraper or road grader it is only necessary tooperate the body lifting or load dumping apparatus of the motor truck for a short time to effect a one or two foot rise in the front end of the load bearing body. Such dumping apparatus is in common use and whether of the mechanical or of the hydraulic type is provided with a locking arrangement to hold the body in any desired angular position. Upon-thebody 20 being tilted the plate 24 rises to engage the undersides of the forward ends of the tubes I 9; Thereafter these tubes act as levers of the third class with downward thrusts being appliedthrough the ears 23 and upward thrustsbeing applied through the plate 24. This action forces the rear ends of the tubes l9 downwardly and applies a. heavy downward force to: theblade 35 causing the same to dig into the surface of theground a distance determined by thehardness of ground and the extent to which the body 20 is tilted. This pressure loading, however, is resilient due to the action of the main suspension springs of the motor truck which, of course, are relieved to the extent of the downward thrust impartedto the blade 35. Thus breakage of parts due t0v an inadvertent tilting of the body 2!] beyond a predetermined or desired extent is avoided. In practice, I have found that better results can be attained if the body 20 is partially filledwith heavy material. In a conventional dump truck of average capacity this load may consist of 1- /2 or 2 tons of stone or other heavy road building materials. This load is advantageous in providing sufficient downward thrusts for the blade ;35 while providing a sufiicient load to insure adequate tractionv at the driving wheels "of the "vehicle whereby the blade 35 may be drawn through the earth or other materials to accomplish itsintended function.

To assist the tubes I79 in preventingsidewise movement of the attachment about the 'draw pin [3 I provide a length of chain 31 on'either 'side of the apparatus eachhaving one of its ends securely fastened to one of the frame members l0 and the other of its ends secured ina'keyhole slot formed in the member 38'which is'welded or otherwise securely fastened to the frame of the motor truck. In this manner the attachment is kept longitudinally aligned with the direction of travel of the truck and the maintenance of this alignment is important particularly when the blade 35 is fixed in angular relation with respect to such line of travel; An important feature of the invention is the ease and'facility with which the attachment of the invention maybe. adjusted and connected to or disconnected from. the motor truck. When in suspended position as shown in full lines in Figure 1, only the weight cf-the ring 28, arms 34 and blade; on, thSshOOkS I8, 29 and 30 so that upon the withdrawal of the pin 33 the ring 28 may be readily rotated to desired position by a single operator. To detach the equipment.- from the truck the body' 201s slightly tilted by operation of the dumping mechanism to an extent just sufficient to-flbat theforward' ends of thextubes' 1-9;" Now upon withdrawal of the pins 2'6 the tubes I'Q'may'be readilyslid for;- wardly to clear the plate Hi. Upon detachment of the chains 31' and withdrawal" of pinJ-H the motor truck can be moved aheadand away-from the equipment after" which the tubes I 9" may" be withdrawn. The reverse procedure is followed in connecting the. equipment to'the truck.

It is normally desirable to employ a scarifier ahead of the blade 35 and for this purpose l5 employ a transverselyextending angle'm'ember 4|] which is carried by the lower ends of a pair of spaced parallel struts 4| which are pivotally connected at their forward ends to the frame members l0 as at 42. Referring more particularly to Figures 5 and 6 the horizontal leg of the angle 40 is notched at spaced intervals as at 43 to receive the teeth 44. These latter are preferably square and are sharpened at their lower ends. To hold the teeth in position blocks 45 are welded to the inner face of the vertical web of the channel 49 to engage the opposite side surfaces of the teeth 44 and to clamp the teeth against this face I provide the bar 46 which is substantially coextensive with the angle 40 which is provided with a continuous rib 41 for engaging within transverse slots formed in one side of each of the teeth. Spaced bolts 48 clamp angle '40 and bar 46 together thus securely retaining the teeth 44. The depth of cut of the scarifier thus described is determined and maintained by the bar of screws 49 which are pivotally connected at their lower ends to the struts 4! as at '50. Screws 49 have screw-threaded connection with rotatable locks 5| secured in struts 52 extending longitudinally between the frame members H and 3| and carried thereby. To the upper end of each of the screws 49 is keyed a hand wheel 53. It should be apparent that upon rotation of the wheels 53 in one direction the teeth 44 of the scarifier will be moved downwardly with respect to the blade 35 while upon rotation in the opposite direction the teeth will be raised with respect to the blade. In this manner the depth of penetration of the scarifier teeth may be readily maintained and adjusted.

While I have specifically described my invention in connection with an earth scarifyin and grading apparatus it should be understood that the broader principles of the invention are equally applicable to other specific uses-for example, to the support and operation of a plow and to the support and operation of a road marking unit, these various instrumentalities being carried by a frame supported by and attached to a motor truck in the manner described and illustrated herein in connection with the frame H), II. Likewise, it will be readily apparent that the grading attachment illustrated herein may be employed in distributing or moving earth or other materials by pushing as would be accomplished by operating the truck in a reverse direction. Further, it should be understood that the specific structures illustrated and described herein are exemplary only as obviously many changes may be made therein without departing from the spirit or scope of the invention. Reference should thereforabe liaid to the appended claims in: detamining the. scope of the-invention.

attachment; for a conventibnal motor tru'ck of the loaddumping type having: a readcarrying body plvotally' supported atits rear and comprising a frame. iatdapt'ed to have itsifbrward end. connectedito the; name of said truck; an earth working implement carried?- by said? frame: and meanstoisupportithe rear end of said frame al'ldltbl force said: rear end downwardly whereby implement may be forced: into' engagementwith earth comprising a; third-class lever" arms carried and; mouablb with: said in rotating 'about pivotalxsupport saiiii arm pno Jectings renal-weirdly of said truelii and having its' nearierrdipurtion secured ta the rean portion or saiili lirml'el. a

Am attachmentinn a conventional motor tmrclc oft the lnadi dumping typeliaving as load carrying body pivotally supported at its rear endi comprising ai frame adapted to have its forward end connected to the frame of said truck, an earth working implement carried by said frame, a socket carried by said body and adapted to slideably receive a third-class lever arm, said arm extending longitudinally rearward of said truck and body and being adapted to rotate with said body about said pivotal supp rt, and means to connect the rear end portion of said arm with a rear portion of said frame, the arrangement being such that when said body is in lowered or horizontal position said implement is suspended above the surface of the ground while upon the lifting of the forward end of said body a predetermined distance said implement ls forced down into the surface of the ground.

3. An attachment for a conventional motor truck of the load dumping type having a load carrying body pivotally supported at its rear end comprising a frame adapted to have its forward end connected to the frame of said truck, an earth working implement carried by said frame, longitudinally extending sockets provided in said body and positioned immediately inward of the spaced parallel body frame members located immediately below the floor of the body, an elongated arm sli-deably received in each of said sockets and projecting rearwardly of said truck and body whereby upon pivotal movement of said body about said pivotal support the rear or free ends of said arms move upwardly or downwardly, and means to attach the rear end portions of said arms to a rear portion of said frame.

4. Apparatus according to claim 3 further characterized in that said attaching means comprises a pair of transversely spaced members secured to and projecting upwardly from said rear portion of said frame, each of said members having an aperture to slideably receive said arms, and removable means on said arms to secure said arms against sliding movement in said apertures.

5. Apparatus of the character described comprising a frame adapted to be detachably connected at its forward end to the rear end of a conventional motor truck of the load dumping type having a load carrying body pivotally supported at its rear end on the rear end portion of said truck, an earth working implement secured to and depending downwardly from said frame, a pair of longitudinally extending but transversely spaced tubular steel booms, said booms adapted to be slideably received in sockets provided in said body, and means at transversely spaced rear-portions of said vframe tosecure said frame to the rear end portions of said booms.

6. An attachment for a conventional motor truck 01 the load dumping type having a. loadcarrying body pivotally supported at its rear end comprising a boom-like support adapted to be rigidly but detachably coupled with said body inrearwardly projecting relation .therewith whereby upon upward tilting movement of said body the outer'or rear end of said support will be moved downwardly, an earth working implement carried by said outer or-rear end of said support in depending relation therewith, and means for tractively connecting said truck to said implement the arrangement being such that upon upward tilting, of, said body said implement may be forced into the surface of the earth while upon said body being lowered to horizontal position said implement is supported in a position above said surface to facilitate its transportation.

- ADAM F. BUTCH.

8 REFERENCES orrEn UNITED STATES PATENTS Number Name Date 1,432,377 Adams et al Oct. 17, 1922 1,546,019 Myers July 14, 1925 1,775,314 Mahoney et al. Sept. 9, 1930 1,883,403 Running et a]. Oct. 18, 1932 1,885,468 Nevin Nov. 1, 1932 1,918,169 Arndt July 11, 1933 2,214,559 Lawton June 3, 1941 FOREIGN PATENTS Number Country Date 102,263 Sweden Aug. 12,1941

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