US1419642A - Road scraper - Google Patents

Description

Patented June 13, 1922.

3 SHEETS-SHEET I.

F. R. MORTON.

ROAD SCRAPER.

APPLICATION FILED JULY 21,1921.

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Patented June 13, 1922..

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F. R. MORTON.

ROAD SCRAPER.

APPLICATION FILED IIJLY 21.1921.

-F. R. MORTON. ROAD SCRAPER.

APPLICATION FILED JULY ZI, I92I` f l 9, 642 A Patented June 13, 1922.`

3 SHEETS-SHEET 3.

UNITED STATES @inria-mfA omer.

FBEDRICK R. MORTON, OF FRESNO, CALIFORNIA ROAD SCRAPER.

Application iled July 21,

To all whom t may concern:

Be it known that FREDRICK R. MoRToN, a citizen of the United States, residing at 'Fresno, in the countyI of Fresno and State of California, has invented certain new and useful Improvements in Road Scrapers, of which the following is a specilication.

My invention relates to machines for scraping, digging, or leveling earth, roads or the like, and has particular reference to improvements in sera ers shown in my copending application, erial No. 460,274, filed April 11, 1921.

An important object of the invention is to provide simplified means for effecting the forward and upward movement of the supplemental frame, for elevating the scraper.

A further object of the invention is to provide' means whereby the pull for elevating the scraper is transmitted directly to the ends of the scraper, and the scraper is free from the downward pressure, which would `otherwise occur at the front of the main frame, if the cable is drawn over an elevated pulley.

A further object of the invention is to lprovide means for tilting the scraper upon its longitudinal axis, in a rearward direction, whereby the load may be carried thereby, without liability of spilling.

In the accompanying drawings forming a part of this specification, and in which like numerals are employed to designate like parts throughout the same,

Fig. 1 is a plan view of a machine embodylng my invention,

Fig. 2 is a side elevation of the same, parts being shown in section,

Fig. 3 is a side elevation of the elevatmg track and associated elements, l

Fig. 4 is an enlarged detail section taken on line 4 4 of Figure 1,

Fig. 5 is a similar viewv taken on line 5-5 of Figure 1,

Fig. 6 is an end elevation of the machine,

Fig. 7 is a detail section taken on line 7-7 of Figure 1,

Fig. 8 is a similar view taken on line 8-.-8 of Figure 1,

Fig. 9 is a transverse section taken on line 9-9 of Figure 8,

Fig. 10 is a transverse section taken on line 10-10 of Figure 3.

In the drawings, wherein for the purpose of illustration is shown a preferred emspeeincation of Letters Patent. YPatented June 13, 1922.

1921. serial No. 486,497.

bodiment of my invention, the numeral 15 deslgnates a mam frame, as a whole, em-

bodying longitudinal beams 16, having forward converging portions 17. The beams 16 are connected bytransverse beams l18 and 19. .The forward ends of the converging portlons 17 are connected by a guide h ouslng 21, and are rigidly attached to the rearwardly .dlverging arms 22 (Figure 2) of this guide housing. The guide housing 21,. see particularly Figs. 8 and 9, has a pa1r of. upstanding arms 23, and a pair of depending arms 24, preferably rigidly secured thereto.` Arranged between the arms 23 is a roller or wheel 25, carried by a bolt 2 6, adapted to be inserted in selectedvertlcally spacedopenings 27. A roller or wheel 28 is arranged between the arms 24, and is carried by a bolt 29 or the like, for insertion within vertically spaced openings 30. By this means the rollers may be raised and lowered within their arms, and'secured thereto in adjustment. A draw-bar 31 extends through the guide housing 21, the top of which is slotted at 21. This draw-bar 31 has an upper `inclined face 31', extending upwardly towardl its rear end, as shown. The rollers 25 and 28 engage the' opposite faces of the draw-bar. The draw-bar, as will be explained, serves as the supporting means for the forward end of the main frame, and by the angular adjustment of the draw-bar, such 'forward end may be raised or lowered.

The rear end of the main frame 15 is supported by an axle 32, upon which are rotatably mounted 'wheels 33. The ends of the axle project into openings formedV in boxes or castings 35, and are preferably keyed therein, or otherwise secured thereto. These boxes are provided with lower L- shaped flanges 36, which are bolted to the longitudinal beams 16, at 35. These boxes 35 are vertically arranged, and carry pairs of upwardly extending vertical arms 38.

The numeral 39 designates an upper supplemental frame, as a whole, embodying longitudinal beams 40, vconnected by a transverse beam 41, and a rear transverse beam 41. The rear portions of the beams 40 extend between the arms 38, and are supported by lower rollers 42, arranged between the arms and pivotally connected therewith, while upper rollers 43 engage the top of the beams 40, and are pivoted to the arms 38.

There is suflicient play between the beams 40 and the guide rollers 42 and 43, to permit of the forward end of the sup lemental frame 39 being vertically adjuste as well as moved longitudinally.

The numeral 44 designates a pair of tracks, which are rigidly mounted upon the beams 16. Each track embodies an elevated horizontal portion 44', and an inclined or elevating portion 45. The horizontal portions 44 serve as supports for the supplemental frame 39, enga ing the beams thereof, when the supp emental support 1s in the lowered position.

The numeral 45 designates a scraping or digging element as a whole, embodymlg a bottom 46 and back 47 and ends 48.y cleat 49, Figs. 1, 2 and 10, is bolted to each end. 48, near the top of this end, and referably nearer the back 47 than the ront of the end. This cleat carries a shaft* or trunnion 50, preferably integral therewith, and the shaft or trunnion is pivotally mounted in an opening 51, in a de ending plate or bracket 52, bolted to the ongitudinal beam 40. Rotatably mounted upon the shafts or trunnions 50 are wheels 53, held against lateral displacement thereon, and these wheels are arranged to travel upon the tracks 44. It is thus seen that the Scrapin elementis pivotally supported by the sha ts 50, and associated elements, and by virtue of the arrangement of these shafts or pivots, when the scraping element contains earth, there is a tendency for the for- Award end of the scraping element to swing downwardly, but when the scraping element is empty, the rear portion including the back 47 is heavier than the forward portion, and hence swings the forward end upwardly.

Means are provided to lock thel scraping element 45 against turning movement upon its shafts or pivots 50, including a reciprocatory bolt55, Fig. 4, operating through an opening in a bracket 56, bolted at 57, to

the transverse beam 41. This bolt is adapted to enter anopening 58 formed 'in a coacting lock element or plate 59, and bolted to the back 47 near its center. The bolt 55 is pivoted at 60, to a vertically swinging lever 61, pivoted'at 62 to a portion ofthe bracket 56, the lower end of this lever being ur ed forwardly by a spring63.

eans are provided to lock the forward end of the supplemental frame 39 against vertical movement with relation to the main frame (Figs. 2 and 4) comprising a latch 68 having a hooked end 69, to engage over a roller 70, pivoted upon the transverse bar 41 of the supplemental frame. The latch 68 is pivoted upon the transverse bar 19 of the main frame, to swing in a vertical plane, and is urged forwardly by a retractile coil spring 71, connected therewith, as more clearly shown in Fig. 5. A rope or cable 72 is attached to the latch 68, near its u per end, and this cable extends rearwar ly for connection, at 73, with the lower end of a vertically swinging lever 74, pivoted upon a bar or support 75, secured to the transverse beam 41. When `the upper end of the lever l74 is swung forwardly, the head 69 of the latch 68 will be moved ofl'l of the roller 70, and the forward end of the supplemental frame released.

The numeral 89 designates a brake lever, Fig. 6, rigidly mounted `upon a rock shaft 90, pivoted within brackets 91, fixed to the transverse bans 18. The rock shaft 90 carries brake shoes 92, arranged to engage with the wheels 33, as shown.

The numeral 93 designates a draft bar, which may be rigidly secured to' a tractor, or upon a wheeled support drawn by horses or the like. The draft bar 93-is securely supported against downward displacement, and this draft bar enters the U-shaped head 94 of the draw-bar 31, and is connected therein by a pin orbolt 95; The numeral 96 designates a lever, which is pivoted centrally thereof upon the pin or bolt 95and is arranged on top of the head 94. Pivotally'connected with the ends'of the lever 96 are longitudinal pull elements 97, which may be rods, cables, chains or the like. These pull elements extend rearwardly in diverging relation, and are'connected with the inner ends of transverse levers 98, as shown at 99. -These levers are pivoted at their opposite ends, to the main frame beams 16, as shown at 100. P ull elements 101' are pivoted to the levers 98 at 102, between the ends thereof, and extend rearwardly, in diverging relation, for pivotal connection with attaching elements or rods 103. The rear ends of these attaching elements or rods are secured to the endsv 48 .by bolts 104. The attaching elements 103 are preferably arranged in alignment with the shafts 50, and extend across them. The pull is transmitted directly. to the ends 48 of the scraping element, and adjacent `to its pivot supports 50.

A pulley 104 (Fig. 2') is pivoted within a bracket 105, secured to the transverse beam 19, and this pulley is engaged by a cable 106, passed therebe'neath and upwardly and at. tached to a bracket 107, secured to the beam 41. The'pulley 106 serves to draw the for.- ward end of the supplemental frame rearwardly and downwardly. The cable 106 extends forwardly and is connected with a lever 108, at 109, and this lever is pivoted upon a bracket 110, secured to the beam 102. A spring 111 swings the lever 108v forwardly.

A cable 112 is secured to the upper end of the lever 74, and this cable extends to a suitable point upon the tractor or the like. A cable v4113 is attached to the cable 112,

' frame.

at 114` and the cable 113 extends rearwardly for attachment to the upper end of the lever 61. There is considerable slack in the cable .113` and the pull upon the cable 112 will move the lever 74, without and before moving the lever 61.

The operation of the machine is as follows: The entire draft in a forwardly direction is transmitted to the bar 93, and the pull is transmitted to the lever 96. The draft bar 31 being free to move longitudinally the pull is transmitted to the elements 97, lever/s 98, elements 101, and finally to the ends of the scraping-element. This pull is then transmitted tol the shafts 50, to the supplemental frame, which is now held in the owered position, and hence to the main The entire machine is accordingly drawn over the ground, the rear end being supported by the wheels 33, while its forward end is supported by the draft bar 93. The bottom 46 of the scraping element is now in a position to contact with the ground, and scra e the earth, which is accumulated therein. lVhen it is desired to stop this scraping motion, the operator pulls upon the line or cable 112, suiiiciently to operate the lever 74 without operating the lever 61. The lever 74 thus has its lower end swung rearwardly, and the head 69 of the latch 68 is moved from above the roller 70. The pull upon the elements 97, is' now forwardly, as the drawbar 31 is capable of moving forwardly in a longitudinal direction. This forward pull swings the levers 98 forwardly, and the pull elements 101 are shifted forwardly, moving the scraping and supplemental frame forwardly. The rollers 53 now travel forwardly up the inclined portions 45 of the tracks 44, whereby the forward portion of the supplemental frame is elevated, and the bottom of the scraping element moved upwardly out' of engagement with the ground, and the scraping action stopped. The forward movement of the supplemental frame 39 is limitedy by the bolts or stops 87, adapted to be mounted in selected openings 89 in the beams 40, contacting with the sides or plates 38 of the castings 35. When the draw-bar 31 is moved forwardly, as above described, the wheel 25 traveling upon the inclined face 31 (the draw-bar being held stationary) tilts the main frame of the machine rearwardly, upon the axle 32, which in turn will tilt the scraper rearwardly, to some extent, making it easy to carry the load a longdistance, to the desired point, without liability of spilling the same. The invention is not restricted to the use of the tapered draw-bar with the inclined face, as the inclined face may bedispensed with, if desired. -I also contemplate .using the inclined face of the draw-bar and associated elements, as the sole means for moving the forward end of the scraper out of contact with the ground, prior 'to transporting the load. The machine may now be conveyed to the desired point to dump the earth, and the cable 112 is now pulled sufficiently to operate the lever 61, the lower end of which is shifted rearwardly, and the bolt 55 is drawn from the opening 58. The weight of the dirt upon the bottom 4G swings the bottom downwardly and the dirt is discharged from the scraping element. The scraping element now automatically returns to its horizontal position and the bolt 55 againl enters the opening 58, locking the scraping element against turning movement upon its pivot. The supplemental frame is returned to its lowered rear position by pulling upon the lever 108, the returning movement being aided by the weight of the suppllemental frame. It is thus seen that the lling and dumping of the scraping element is effected entirely through the pull transmitted to and from the draw-bar, and no clutches, gears, or the like are employed.

It is to be understood that the form of my invention herewith shown and described is to be taken as a preferred example of the same, and that various changes in the shape, size, and arrangements of parts may be resorted to without departing from the spirit of my invention or the scope of the subjoined claims.

Having thus described my invention, I claim:

1. In a machine of the character described, a main frame, wheels supporting the same, a supplemental frame, means whereby the supplemental frame has a portion thereof supported by the main frame and is adapted tomove longitudinally and upwardly with relation to the main frame, a scraping element supported by the supplemental frame, tracks secured to the main frame and having inclined portions, elements carried by the supplemental frame/and arranged to enga e the inclined portions of the track, a draft device connected with the main frame and adapted to move longitudinally with relation thereto, connecting means between the draft device and the supplemental frame, and means to prevent the upward movement of the supplemental frame with relation to the main frame.

2. In a machine of the character described, a main frame, wheels supporting the same, a supplemental frame` extending longitudinally of the main frame, supporting means carried by the main frame and engaging the rear portion of the supplemental frame, tracks secured to the main frame and having inclined portions, a scraping element provided at its Aends with pivot shafts, brackets secured to the supplemental frame and pivotally receiving the. pivot shafts, wheels carried by the pivot shafts and engaging with the inclined yportions of' said tracks, a draft device-secured to the main carried by the main frameand engaglng the rear portion of the supplemental frame, tracks secured to the main frame and having inclined ortions, a. scraping element pro'- vided at its ends with pivot shafts, brackets secured to the supplemental frame and pivotally receiving the pivot shafts, wheels carf ried by the pivot shafts and engaging with the inclined portions of said tracks, a draft device secured to the main frame and movable longitudinally with relation thereto, pull elements connected with the ends of the scraping element, and means connecting the pull elements with the draft device.

4:. In a machine of the character described, a main frame, wheels supporting the same, a supplemental frame extending longitudinally of the main frame, supporting means connecting the supplemental frame and main frame, tracks secured to the main frame and. having inclined portions, wheels connected with the supplemental frame and engaging said inclined portions, a scraping element pivotally connected with the supplementalv frame, levers having their outer ends pivotally connected with the main frame, vpull elements connected with said levers between their ends and connected with the ends of the scraping element, a draft device connected with the main frame and movable longitudinally thereof, and pull elements connected with the draft device and with the inner ends of said levers.

5. In a machine of the character described, a main frame, wheels supporting the same, a supplemental frame extending longitudinally of the main frame, supporting means connecting the supplemental frame and main frame, tracks secured to the main frame and having inclined portions, wheels connected with the supplemental frame and enga-ging said inclined portions, a scraping element pivotally connected with the supporting miam frame, levers having their outer ends pivotally connected with the main frame, pull elements connected with said levers between their ends and connected with the ends of the scraping element, a draft device connected with the main frame and movable longitudinally thereof, a lever pivoted between its ends upon the draft device, pull elements connected with the ends of the last named lever and with the inner ends ofthe first named levers, and means to prevent upward movement of the supplemental frame.'

6. In a machine of the character described, a main frame, wheels supporting the same, a supplemental frame extending longitudinally of the main frame, supporting means connecting the supplemental frame and the main frame, ltracks secured to the main frame and having inclined' portions, wheels connected with the supplemental frame and engaging the inclined portions of the tracks, a. scraping element carried by the supporting frame, a draw-bar connected with the forward end of the main frame and adapted to move longitudinally with 4relation thereto and havin an inclined face, wheels carried by the main frame and engaging the drawbar, one wheel engaging the inclined face soil whereby the main frame is adapted to betilted upon its transverse axis when the drawbar moves longitudinally with relation to the main frame, connecting means-'between the draw-bar and the supplemental frame, and means to hold the supplemental frame against upward movement with relation to the main frame.

7. In a machine-of the character described, a main frame, wheels supporting the same, a scraper carried by the main frame and extending transversely thereof, a draw-bar arranged at the forward end of the main frame and extending longitudinally thereof and havin an upper inclined face, wheels connecte with the main frame and engaging the longitudinal faces of the draw-bar, a supporting element to which the draw-bar is connected, and means to control the lon tudinal movement of the draw-bar 'wit-hr lationl to the main frame.

In testimony whereof I aflix my signai ture.

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