US2267699A

US2267699A - Road scraper

Info

Publication number: US2267699A
Application number: US374569A
Authority: US
Inventors: Jr Anton Kern
Original assignee: Individual
Current assignee: Individual
Priority date: 1941-01-15
Filing date: 1941-01-15
Publication date: 1941-12-23
Anticipated expiration: 1958-12-23

Description

A. KERN, JR

ROAD SGRAPER 2 Sheets-Sheet 1 Filed Jan V15, 1941 Inventor Dec. 23, 1941. A. KERN, JR 2,267,699

ROAD 5 CRAPER Filed Jan. 15, 1941 2 Sheets-SheetZ Inventor A frame Patented Dec. 23, 1941 UNITED STAT ES PATENT OFFlCE,

9 Claims.

The present invention relates to new and useful improvements in scraping attachments for road graders and has for its primary object to provide a scraper blade adapted for detachably mounting in advance of the machine and embodying means for raising the blade out of road scraping position from the drivers seat or control cab and also embodying novel means for securing the blade in oppositely inclined positions forselectively throwing the loose material toward either side of the machine.

A still further object is to provide a scraper attachment of this character of simple and practical construction, which is efficient and reliable in performance, relatively inexpensive to manufacture and install in operative position and otherwise well adapted for the purposes for which the same is intended.

Other objects and advantages reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming part hereof, wherein like numerals refer to like parts throughout, and in which Figure l is a side elevational view of the scraper shown in position at the front end of a tractor or other road machine,

Figure 2 is a front elevational view,

Figure 3 is a fragmentary rear elevational view,

Figure 4 is a fragmentary sectional View taken substantially on a line 44 of Figure 2,

Figure 5 is a vertical sectional view through one of the guides for raising and lowering the blade supporting frame, and

Figure 6 is a sectional view through the adjustable locking bar taken substantially on a line 6-6 of Figure 4.

Referring now to the drawings in detail, wherein for the purpose of illustration I have disclosed a preferred embodiment of the invention, the numeral 5 designates the front end of the frame of a conventional form of road scraper or similar road machine which is mounted on the wheels 6. Fixedly secured to the frame 5 and extending downwardly at each side thereof, is an arm I to the upper portion of which is journalled a rock shaft 8 having a pair of forwardly extending arms 9 adjacent each end of the shaft 8. To the outer ends of the arms 9 are pivotally attached rods 10 which extend downwardly and to the lower ends of which is secured a transversely extending beam II, the beam being welded or otherwise fixedly secured to the lower ends of said rods.

Projecting forwardly from the beam H, adjacent each end thereof, is a guide arm l2 on which the scraper blade I3 is slidably mounted through a sleeve I 4 fixed in an opening, l in the blade. The scraper blade is preferably constructed of a plurality of laminated sections connected together by means of bolts 15. Mounted on the guide arm l2 between the beam II and the blade I3 is a coil spring I6 yieldably urging the blade forwardly, the outer end of the guide arm being provided with a nut or head 11. Projecting rearwardly from the blade l3 adjacent each end thereof, is a guide arm l8 which is slidably mounted at its rear end in the beam I I, the rear end of the arm [8 having a nut l9 thereon and a coil spring 20 is mounted on the arm between the blade and the beam.

Transversely extending braces 2| connect the two vertical rods l0 and inclined braces 22 are also provided connecting the transverse braces, and the braces are welded or otherwise fixedly secured to the rods. Rearwardly extending braces 23 are also attached to the rods 10, the rear ends of the braces having a shoe 24 welded or otherwise secured thereto.

The shoes 24 are of wedge-shape form as i1lustrated to advantagein Figure 5 of the drawings, and are slidably mounted in the vertically extending guides 25 secured to the lower portion of the arms I by bolts 26 or the like.

Rising from the rock shaft 8 is an arm 2'! to the upper end of which is pivotally secured a lever 28 leading to the operators cab of the machine, wherebyvit will be apparent that upon a rearward movement of the lever 28 the arms Ill will be. raised upwardly, whereby to bodily raise the blade. l3. The wedge formation of the shoes 24 in the guides 25 compensates for the slight rearward movement necessary for the blades I3 during the upward swinging movement of the arms 9 whereby to prevent binding of the shoes in the guides.

Projecting rearwardly from the blades l3, adjacent each end thereof, is a pair of spaced cars 29 on which a pin 30 is mounted, the pin providing a pivotal mounting for the front end of a link 3| which extends rearwardly and has its rear end pivoted as at 32 to the lower end of a lever 33 which is pivoted intermediate its ends as at 34 adjacent the lower end of the rods III.

A transversely extending tubular rod 35 is welded or otherwise secured behind the rods l0 and also supported on the braces 23, the rod 35 having a bolt 36 slidably mounted thereon, the bolt being adapted for projecting outwardly of either end of the tube 35 for engaging behind the upper end of the lever 33 to retain the lever with its lower end moved rearwardly whereby to pull the adjacent end of the blade l3 in a rearward direction and thus incline the blade toward one side of the machine. The locking bolt 36 is manipulated by means of a lever 31 which projects upwardly through a slot 33 formed in the tubular member 35. The slot 34 includes a longitudinally extending portion 39 along which the lever 31 is movable for projecting the bolt 36 outwardly of either end of the tubular member, and the slot further includes laterally extending portions 40 at'each end of the longitudinally extending portion and within which the lever 31 may be moved for securing the bolt in the desired position.

The bolt 33 corresponds in length to the tubular member 3550 that only one end of the bolt may be projected from said member for locking vantages and manner of use of the device will be readily understood from the foregoing without further detailed explanation.

What I claim is- 1. A road scraper comprising a scraper blade, spring means projecting the blade forwardly, means for supporting the blade in advance of a vehicle and means for adjusting either end of the blade into a transversely inclined position against the tension of said spring means.

2. A road scraper comprising a scraper blade, means for supporting the blade in advance of a vehicle and including yieldable means for each end of the blade for projecting the blade forwardly and means for regulating the pressure of the blade at either end against the yieldable means to incline the position of the blade.

3. A road scraper comprising a scraper blade, means for slidably sup-porting the blade for movement in a forward or rearward direction on the front end of a vehicle, spring means yieldably urging the blade forwardly and means for securing either end of the blade rearwardly against the tension of the springs to maintain the blade in a transversely inclined position.

4. A road scraper comprising a scraper blade, spring means projecting the blade forwardly, means for supporting the blade in advance of a vehicle, means for moving the blade into oppositely inclined transverse positions against the tension of said spring means and means for retaining the blade in its inclined position.

5. A road scraper comprising a scraper blade, spring means projecting the blade forwardly, means for supporting the blade in advance of a vehicle and including guide rods longitudinally of the vehicle on which the blade is slidably mounted, means for movin either end of the blade on said rods to incline the blade against the tension of said spring means and means for retaining the blade in said inclined position.

6. A road scraper comprising a scraper blade,

I spring means projecting the blade forwardly,

means for supporting the blade in advance of a vehicle and including guide rods longitudinally of the vehicle on which the blade is slidably mounted, means at each end of the blade for moving the blade into a transversely inclined position against the tension of said spring means and means selectively engaging either of said last named means for retaining the blade in said inclined position.

'7. A road scraper comprising a scraper blade, spring means projecting the blade forwardly, means for supporting the blade in advance of a vehicle and including guide rods longitudinally of the vehicle on which the blade is slidably mounted, means at each end of the blade for moving the blade into a transversely inclined position against the tension of said spring means and a locking bar selectively engaging either of said last named means for retaining the blade in its inclined position.

8. A road scraper comprising a scraper blade, spring means projecting the blade forwardly, means for supporting the blade in advance of a vehicle and including guide rods longitudinally of the vehicle on which the blade is slidably mounted, an upwardly extending lever at each end of the blade for moving the same into a transversely inclined position against the tension of said spring means and a transversely disposed slidable locking bar engageable with the levers for retaining the blade in its inclined position.

9. A road scraper comprising a rock shaft journalled transversely of a road vehicle, arms projecting forwardly from the shaft, a scraper blade suspended from said arms, means extending rearwardly from the shaft for raising the blade, a channelled guide carried by the vehicle, a brace extending rearwardly from the blade and a wedge-shaped shoe carried by the brace and slidably mounted in said guide, said shoe being tiltable upon upward movement of the blade to prevent binding of the shoe in the guide.

ANTON KERN, JR.