US1657602A - Scraper - Google Patents

Description

Jan. 31, 1928.

5 Sheets-Sheet 1 /N VENTa/Ps 6.5.3,: LL. 5. HJBALL SCRAPER C. E. BALL ET AL Filed Nov. 17. 1924 a Q I? n v.

Jan. 31, 1928. 1,657,602

C. E. BALL ET AL SCRAPER 5 Sheets-Sheet 2 lNvnvraxs CHARLES fu'B SAMUEL h. 3' A 7- rum/ex Jan. 31, 1928.

c. E. BALL ET AL SGRAPER 5 Sheets-Sheet 3 Filed Nov. 17. 1924 uau- 1 Jan. 31, 1928. 1,657,602

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' 1,657,602 c. E. BALL ET AL SCRAPER Filed Nov. 17, 1924 s sheets-sheet "5 CHAR}. rs E, BAA L.

v I SAMUEL QBALL.

yrranlve'r- Patented Jan. 31, 1928.

cHAnLEsn. BALL AND sAMuEL I1. BAL or IRWIN, CALIFORNIA.

SCRAPER.

Application filed November 17, 1924. Serial No. 750,349.

Our invention relates primarily to a scraper such as is used for road construction, land leveling, etc., of the character described and claimed in Patent No. 1,522,937, dated January 13th, 1925, and the object is to provide certain new and useful improvements therein; In the-use of the mechanlsm in the above patent it'was found that by arranging the scrapers so as tube at an angle with the front end uppermost while carrying a load, and providing a" gate for the rear portion of the scrapers to, be released when it was desired to unload the same, that a much superior device was produced which eliminated spillzrge, increased speed of operation and thereby greatly reduced the cost of operation. U

It is the object of our invention to provide a scraper or scrapers iounted on a frame supported at a suitab e distance by wheels and a carrying mechanism whereby the scrapers (one or more) may be lowered and loaded in theusualnmanner and then elevated, and transported to the desired place of deposit, with a suitable gate provided to prevent the accidental spillage of the load at the front end, and with a releasable gate closure at the rear end of the scraper to allow of dumping without the necessity of tipping-the same. Suitable mechamsmos also provided to control the angle at which the bowl is raised, whereby the load may be deposited in one placeor may be spread to level as desired. e

Other objects and advantages will appear hereinafter and, while we have shown and will describe the preferredform of our invention, we wish it specifically understood that we do not limit ourselves to such preferred form but that various changes and adaptations may be made thereinwithout departing from the spirit of our lnventlon.

In the drawings accompanying and forming a part hereof:

Figure 1,is a side elevatlon of our improved device. v V/ Figure 2, is a top plan of Figure ('1).

Figure 3, is a top plan, on an enlarged scale, of the scraper control mechanism.

- Figure ,4, is a side elevat on of F gure (.3). v Figure 5, is an enlarged detail View showing the raising and loweringnmchanism of the scrapers.- v

Figure 6, 1s atop plan of one of our scrapers. I

Figures 7 and 8 are rear elevations of one of our scrapers showing the rear gate locking and releasing mechanism.

Figure 9, is an enlarged side elevation of our rear axle braking mechanism. Figure 10 shows a detail, of construction.

Referring to the drawings our device comprises a substantially rectangular frame 10 supported at its front end by a pivotal axle 11'; which axle is supported at each end by wheels 12 and 13. Extending transversely of frame 10 at a short distance from the rear end is an axle 14; supported near each end bybearings extending downwardly from frame 10, and mounted upon the ends of'said axle are wheels 15 and 16 provided with the usual ratchet mechanism? Revolub'ly mounted at its ends inbearings 17 and 18 to extend transversely of frame 10 is a drive shaft 19 one end of which extends beyond bearing 17. Rigidly mounted upon this promoting-end is a sprocket 20 which is connected by a chain 21' to asprocket' 22 rigidly mounted upon axle 14 whereby rotation of said axle will be imparted toshaft 19. B0 Revolubly mounted at their ends in bearings 23 and 24 extendingupwardly fromframe 10 are the bowl elevating shafts 25 and 26 which extend transversely of the frame 10. Rigidly mountedupon these shafts at a short distance from the inner sides of frame 10 are spur gears 27 and 28. 1 Y L Rigidly mounted upon shaft 25 at the inner side of gear 28 is a sprocket 29 which is connected by, a chain 30 to a sprocket 31 loosely mounted upon shaft 19. 'A clutch 32 of any suitable construction provides means for locking sprocket 31 to shaft 19 whereby rotation of shaft 19 may be imparted to. shaft 25. Rigidly mounted upon shaft 26 at-the inner side of gear 27 is a sprocket 33 which sprocket is connected by a chain 34: L to a sprocket 3,5, loosely mounted upon shaft 19. A clutch 36 of'any desired construction provides means for locking sprocket 35 to shaft 19, whereby rotation of shaft 19 may be imparted to shaft '26.

Extending transverselyaof; frame 10 and securedat its ends thereto immediately in front of shaft 19 is a cross member 37 and upon this cross member are pivotal! mounted bell crank levers 38 and 39 whic r are operatively connected to clutch levers 40. and 41 of clutches 32 and "36 respectively. The free 'end'of bell crank lever 38 is con nected by a rod 42 to the upper end of-an arm 43 which arm is rigidly mounted upon 54 on the inner sides thereof by i the other end of which extends a transverse rocking shaft 44 mounted at its ends in frame-10. The upper end of arm 43 is pivotally connected to one end of a rod forwardly and is pivotally connected to the upper end of an arm 46. This arm is loosely mounted at its lower end upon a transverse shaft 47 turnably mounted at its ends in the sides of frame 10. An operating handle 48 extends forwardly from the front end. of arm 46 about centrally of its length and provides means for controlling the rotation of shaft 25. The free endof bell crank lever 39 is pivotally connected by a rod 49 to the upper end of an arm 50. The other end of arm 50 is rigidly mounted upon shaft 47. Arm 50 is provided with an operating handle 51 by means of which the rotation of shaft 26 is controlled.

Our bowl elevating means comprise vertically extending bars 52 the lower ends of which are pivotally connected to the bowls pivots 55. The upper ends of bars 52 are provided with rack bars 58 the teeth of which are in operative engagement with the teeth of gears 27 and 28. U-shaped brackets 59 loosely mounted upon shafts 25 and 26 serve to hold racks 58 positioned in operative engagement with gears 27 and 28.

Our bowls 54 are substantially U-shaped in end elevation and are composed of the bottom wall 61 and the side walls 62. Pivotally connected at one oftheir ends to the outside sides of the side walls 62 of the bowls upon the pivots of the elevating bars 52. are links 64 the other ends of which are pivotally mounted upon studs 66. Studs 66 are adjustably mounted in apertures 68 provided in downwardly depending brackets 70 and 71 secured to the sides of frame 10. Pivotally connected at their lower ends to i the outer sides of the side walls 62 of the apertures 68 and 76 the bowls 54 at the to of the rear wall are links 72 the other en s of which are pivotally mounted upon studs 74 adjustably mounted in apertures 76. Apertures 76 are provided in vertically extending members 77 secured to the frame. It will be here. specifically noted that by providing a plurality of pivotal ends of links 64 and 65 and 72 may be adjusted to vary the angularity of the cutting edge of the bowls to suit varying types of soil and earth. Connecting the up er extremity of the side walls 62 of the bow s 54 is a rod 78 and upon this rod is pivotally mounted one end of the rear end gate 79 which gate is of a configuration to snugly fit the rear end of. said bowl. Extending rearwardly from the bottom wall 61 bowl 54 is a catch 80 provided with a notch 81 and rigidly secured at its upper end to the outer face of gate 79 is a latch 82. This latch is of resilient material (preferably spring steel) and ofa width to fit within notch 81 and having its lower end turned at a right angle to snugly fit beneath catch 80 to securely hold gate 79 in its closed position. Loosely mounted in the lower end of latch 82 to extend parallel with gate 79 is one end of a stud 83 the other end of which is pivotally mounted in the free end of the short leg 84of a bell-1 crank releasing lever 87. Lever 87 is pivotally mounted upon gate 79 by means of a pivot 86 and projects through a guide strap on the gate. To the free end of the longer leg of the lever is connected one end of an operating cable 88 which passes over grooved wheels 89 suitably mounted in frame 10 and thence to the front end of the machine a termination. near the drivers seat 90. Pivotally' mounted upon rod 78 at the outer ends of gate 79 are.arms 91 and 92 which extend forwardly and support upon their outer ends the front end gate 93.

Gate 93 is preferably/ formed from sheet metal and has its ends bent to lie parallel with the sides of bowl 54 and these sides are pivoted to the ends of arms 91 and 92. It will be specifically noted that the front portion of gate 93 is positioned to extend angularly forward relative to the bottom of bowl which construction is provided so that said gate when closin will not its way through any earth which may be ovcrhanging the front end of said bowl.

Cables 94 and 95 are secured at one of their ends to gates 93 and at their other ends are loosely mounted upon shafts 44 and 47. These cables are of a length sufficient only to hold the ates a certain distance from the ground. ltigidly mounted upon the. outer ends of shafts 25 and 26 at one side of frame 10 are ratchet wheels 96 and 97 and pivotally mounted'upon frame 10 are awls 98 and 99 adapted for engagement wit 1 said ratchets to prevent the reverse rotation of shafts 25 and 26. They thus serve to hold the bowls elevated when desired. The lower end of pawl 98 is connected by a rod 100 to a crank 101 rockably mounted at the front of the machine, which crank is provided with a foot pedal 102 by means of which said pawl is disengaged from its ratchet. Pawl 99 is connected in a rod 103 to a similar crankshaft 104 provided with a foot pedal 105. Springs 106 act to normally hold said pawls in operative positions.- The u per ends of bars 53 are provided with riglit angled lips or projections 107 and in these projections are slidably mounted rods 108 which extend upwardly and are slidable vertically. The upper ends of rods 108 are threaded and provided with nuts 109 and 110. The lower ends of rods 108 are pivotally connected to one end of links 111, the other ends of which links are rigidly mounted upon rocking shafts 44 and 47 respectively so that as said shafts 44 and 47 are rocked the outer ends of said links will slide rods 108 vertically. When the clutch control handle 48 for instance is raised to cause the corresponding clutch 32 to be thrown in to drive the shaft 25 and cause the rack 58 and bowl 54 to be raised, the projection 107 on said rack will after some movement of the latter engage the nut on the adjacent rodthe clutch 32 out and automatically discontinuing the raising of the bowl. The distance to which thebowl will be thus raised depends on the position at which the nuts 109 and 110 are set on the rod 108. Rigidly mounted upon the ends of shafts 25 and 26 at the outer side of frame '10' and on the side opposite to ratchet wheels96 and 97 are brake drums 112 and 113 and passing around these drums are brake bands 114 and 115 one of the ends of which are mounted upon studs 116 extending from the side of frame 10. The other ends of bands 114 and 115 are secured to slotted members 117 each provided with a longitudinal slot 118. Loosely mounted in slots 118 are studs or pins 119 which project outwardly from the upper end of arms 120. The other ends of arms 120 are rigidly mounted upon shafts 44 and 47 whereby when said shafts are rocked forwardly a sufiicient distance bands 114 and 115 are caused to frictionally engage the respective drums 112 and 113. This arrangement permits the shafts 25 or 26 to be held immovable after the corresponding clutches are disengaged, by a further depression of the handles 48 or 51. This prevents the rack-s and bowls from any undesired raising out of the ground of themselves after they have been lowered to the proper scraping angle and depth. At the same time, owing to the slots in the members 117, the brakes remain released under all ordinary operating conditions.

Rigidly mounted upon axle 14 at the inner side of wheel'lG is a brake drum 121 and engaging the outer periphery of said drum is a brake band 122. One end of band 122 is provided with an adjustable clevis 123 which clevis is pivotally mounted upon an operating bar 125 intermediate its ends. Bar 125 is pivotally mounted at its lower ends between the lower ends of links 126 by means of stud 127. The upper ends of links .126 are pivotally mounted in frame 10. The other end of band 122 is pivotally mounted upon stud 127. The upper end of bar 125 is pivotally connected to one end of a pull rod 128 which extends forwardly therefrom and terminates in a clevis 129. Clevis 129 is pivotally connected to the upper end of an arm 130 rigidly secured upon one end of a rod 131 rockably mounted in a bearing 132. Rod

131 is provided at its inner standing foot pedal 133 by the brake is applied.

Having described our invention what we claim is:

l. A scraper including a frame supported from the means for raising the bowl, such means including a vertical rack connected to the bowl, a shaft, a pinion on the shaft engaging the rack and a driven shaft operative ly connected with the pinion shaft; a clutch for controlling the driving of the pinion shaft, hand means for releasing the clutch, and means actuated by the vertical moweend with an up means of wlnch ground, a scraper bowl, drive ment of the rack a predetern'iined distance for also releasing the clutch, said means including a shaft connected to the hand means and rotatedthereby, a vertical rod, a lateral projection on the rack through which the 5 rod ELISSES, an adjustable member on the rod a ove the projection to be engaged there by, and a link between the lower end of the rod and the shaft and fixed to the latter, said rod when raised by engagement of the rack projection with the adjustable member thereon causing the shaft to be rotated in a clutch releasing direction.

2. A scraper including a frame supported from the ground, a .bowl normally disposed below the frame, the sides of the bowl converging upwardly from both ends to form a substantially'central apex, means applied to the bowl for raising the same, further means between the bowl and frame whereby with such upward movement thebowl will tilt rearwardly, a normally closed but releasable gate hinged onto the bowl at the apex thereof and extending downwardly to the rear lower end of the bowl, a front gate pivoted onto the bowl and projecting thence forwardly, and upwardly yieldable means holding said front gate in diverging relationship to the forward edges of the sides of the bowl when the latter is in its normal position adjacent the ground.

3; 'A scraper including a frame supported from the ground, a bowl normally disposed therebelow, a single rigid and forwardly extending link pivoted onto the bowl toward its forward end and onto the frame ahead of the bowl, a verticalunember pivoted onto the bowl in common with the link and projecting upwardly therefrom, means applied to said member for moving the same onto the bowl adjacent its rear end and extending-thence upwardly to an immovable of the bowl, a vertical member pivoted onto vertically, and another rigid link pivoted 7 1y, a front the bowl in common with the link and projecting upwardly therefrom, means applied to said member for movingthe same Vertically, and another rigid-link pivoted onto the bowl at its rear end and a predetermined distance from the bottom of the bowl, and extending thence upwardly and forwardly to an immovable pivotal connection with the frame.

5. A scraper including a frame supported from the ground, a bowl normally disposed below the bowl for raising the same, further means between the bowl and the frame whereby with such movement the bowl will tilt rearwardendgate for thebowl, means whereby said gate will automatically cooperate with the front of the bowl to close the same only when the bowl is thus tilted, a rear endgate mounted on the bowl tending to automatically swing open when the same, means applied to the tween the sides from the bottom of the bowl to adjacent the top of said sloping portion ind beingpivoted at its upper end onto the owh In witness that we claim the foregoing we have hereunto set our hands this 6th day of August, 1924.

CHARLES E. BALL. SAMUEL BALL.

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