US397291A

US397291A - Road-grading machine

Info

Publication number: US397291A
Authority: US
Publication date: 1889-02-05
Anticipated expiration: 1906-02-05

Description

(No Model.)

J. M. HOLLAND.

4 ROAD GRADING MACHINE. No. 397,291. Patented Feb. 5, 1889..

INVENTOR ATTORNEYS.

WITNE SES:

Pholo-lx'lhognphen Washingion. a c,

1 UNITED STATES ATENT FFlCEi JAMES M. HOLLAND, OF MOUNT PLEASANT, IOlVA.

ROAD-GRADING MACHINE.

SPECIFICATION forming part of Letters Patent No. 397,291, dated February 5, 1889.

Application filed February 3, 1883. Serial No. 262,833. I (No model.)

To {ZZZ whom it 72mg concern.-

Be it known that I, J AMES M. IloLLAND, of 4 proved Road-Grading Machine, of which the f following is a full, clear, and exact description.

end of the other loop engage the notches of the standard in connection with which they arranged; and in order that the catches may be thrown into and out of engagement with the standard-notches I connect the rearwardly-extending end of each loop with an equal 3 'izer, 19, which said equalizer is in turn con- The object of this invention is to provide a simple, cheap, and durable road-grading machine, and one wherein the scraping blade or Reference is to be had to the accompanying drawings, forming a part of this specification, i

in which similar figures of reference imlicaic corresponding parts in all the views.

Figure 1 is a side view of my improved roadgradingmachine. Fig. 2 's a plan view of the same. l ig. E3 isa [rontvicw thereof, and Fig. l is an ei'ilarged detail view of a portion of one of the standards and the lever and locking devices arranged in connection therewith.

In the drawings, represents the main frame of the machine, which is mounted upon wheels 11 and 13. The axle of the forward wheels, 12, supports a heavy bolster, 13, upon which the forward end of the frame 10 rests.

At each side of the frame 10 there are ar-- ranged parallel rods or bars 14-, and upon each pair of bars there is adjusialirly mounted being formed with notches or recesses 2, while through the bodies of the stamlards there are formed vertical slots 23, which provide for the passage of the pintles orbolts :1 by which the catches 18 are connected. These catches l8 consist of flat strips of iron, the ends of which are riveted or secured together to form rectangular loops, the width of one being slightly in excess of that of the other, so that tho narrower loop will lit within the wider one. The

there isv passed a vertical clevis,

nected to a rod, 20, said rods being held to the lovers 1(3 and provided with operating-levers 2], the equalizer, however, being normally held in the position in which it is shown in Fig. l by a spiral s1i)ring, 23.

The scraping blade or shovel is pivotally connected to the rear end of a centrallyslotted bar, 31, the forward end of said bar being formed with an eye, 4, through which 33, which clevis is in the form of an expanded U, the

: U-legs extending forward and being formed with eyes through which the king-bolt of the implement passes.

The central slot, 34, of the bar 31 is formed with a double rack, which rack is engaged by blocks 35, to which blocks diagonal braces 36 are in turn connected, said braces extending to the outer ends of the scraping blade or shovel. To the forward end of the slotted bar 31 there is connected a chain or rope, 37, which extends upward over a sheave, 38, downward and about a sheave, 39, that is carried by a bracket, 40, which extends forward from the bolster 13, this bracket also carrying two horizontal sheaves, lhbetwcen which the cord or chain 37 passes, the end of the cord or chain being connected to the pole or tongue 41. The ends of the blade or shovel 30 are pivotally connected to the lower ends of the standards 1 7.

Such. being the general conslruction of my improved road-grading machine, the operation is as follows: by throwing the levers 21 in the direction of the arrows shown in conneetion therewith in I ig.],the eveners 19 will be drawn backward and the catches 18 will be moved to the position shown in dotted lines in Fig. l, after which the standards at either side may be raised or lowered to impart a proper angle to the blade or shovel, in. which position the blade may be maintained upper end of one of the loops and the lower if the levers 2'] are released and the catches allowed to return to the position shown in full lines in the drawings. Then as the machine is drawn forward, if itis desired to raise or lower either side, all that is necessary is to impart a correspoiuling motion to theleverlil upon that side.

The adjustment heretofore described is that for obtaining the desired angle from a horizontal plane, and to obtain the required angle from a vertical plane the blocks 35 are moved toward or from the forward axle of the machine, these blocks being held in engagemei'it with the rack-teeth of the bar by springs 7, which bear against the outer edges of the bar and hold the catch-teeth 8 formed upon the blocks in engagement with the raekteeth.

If when the machine is in use it is desired to turn a sharp corner, it will be seen that as the tongue or pole is turned in either direction it will draw upon the chain or cord 37, and said chain or cord will act to raise the forward end of the bar 31, and consequently will permit the forward wheels to pass beneath the frame of the vehicle, so that this raising of the bar is automatic.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. In a road-grading machine, the combination, with the main frame, of a double toothed rack connected thereto, a blade adjustably connected to the double-toothed rack, and braces extending forward from the blade to blocks which engage the rack-teeth, substantially as described.

2. 111 a road-scraper, the combination, with the main frame, of abar having its forward end loosely connected to the main frame, a blade pivoted at about its center to the said bar, braces having one end connected to the blade and the other ends adj ustably connected to the said. bar, independent standards adj ustably secured in the frame and having their lower ends pivotally connected to the blade, and catches for loekin the standards in the position to which they have been adjusted, substantially as described.

3. In a road-grading machine, the combination, with the main frame, of lovers adjustably mounted thereon, catches carried by the levers, standards formed with notches that are engaged by the catches, a blade or shovel. connected to the lower ends of the standards, a double-toothed rack connected to the frame of the machine and centrallyconnected to the blade or shovel, blocks engaging the rack-teeth, and diagonal braces extending from the blocks to the ends of the blade or shovel, substantially as described.

4. In a road-scraper, the combination, with the frame 10, of lovers adjustably mounted thereon, catches 18, carried by the levers, equalizers to which the catches are connected, rods connected to the equalizers, handledevers connected to the rods, and spiral sprin s ar ranged in connection with the rods, slotted standards formed with recesses 2, the pintles or pins of the catches passin through the stand ard slots, a double-toothed bar conn ected to the main frame of the machine and to the shovel, blocks carried by said bar, and diagonal braces connected to the blocks and to the ends of the shovel, all substantially as described.

JAMES M. HOLLAND.

Witnesses:

R. W. ALLsUP, JOHN F. LEEoI-I, HUGH OHARE.