US2266625A - Terracer and grader - Google Patents

Description

c. w. CUNDIFF TERRACER AND GRADER Dec. 16, 1941.

2 Sheets-Sheet 1 Filed Nov. 4, 1940 Dec. 16, 1941. c, w -UND|F F' 2,266,625

TERRAGER' AND GRADER Filed Nov. 4, 1940 2 Sheets-Sheet 2 Patented Dec. 16, 1941 UNITED, STATES PATENT Y OFFICE TERRACER AND GRADER Charles W. Cundifi, Owensborb, Ky. 7

Application November 4, 1940, Serial No. 364,277

4 Claims.

My invention relates to an improvement in terracers and graders, and is really an improvement on the invention set forth in Letters Patent No. 2,062,210, granted to me November 24, 1936.

My present invention consists in a cross-bar and fifth-wheel in combination with two pullbeams, one at each end of the blade of the machine, and all pivotally connected together to a centrallylocated draw-bar, thus forming a solid unit which keeps the machine from skidding sidewise and enables the entire machine to be pulled in a definite predetermined direction. Included with these features are means for reversing the machine and changing the angular direction of the blade so that it will out either to the right or left or straight across the body of earth to be moved and terraced or graded.

In the accompanying drawings:

Fig. 1 is a view in perspective;

Fig. 2 is a plan view;

Fig. 3 is a longitudinal sectional view through the center of the draw-bar; and

Figs. 4 and 5 are sectional details.

The pull-beam I, the cross-bar 2 pivoted thereto, the scraping blade 3, and the two gooseneck bars 4 pivotally connected with the blade and extending to the cross-bar 2, and all five parts pivotally connected together, constitute the framework of the machine.

The pull-beam I is preferably constructed of channel-iron to give it lightness and strength; the cross-bar 2 of angle-iron, and the cross-bar, blade, and the gooseneck bars 4, form a parallelogram.

The rear nds of the gooseneck bars 4 are pivotally connected with the back of the blade by pins 5, and their forward ends are ivotally connected to the extreme outer ends of the crossbar 2 by the pins 6. A sliding lever-operated latch-pin 1 locks the cross-bar 2 at the required angle with respect to the pull-beam I, and a lever 8 is pivoted at 9 to the pull-beam and is adapted to raise the lever-operated latch-pin 'I which has sliding connection with the pull-beam out of the hole ID in the fifth-wheel II on the cross-bar 2.

At the forward end of the pull-beam I, the machine is supported from a caster-wheel I2 to which it is pivotally connected, and means is provided through the holes I3 and bolts I4 for raising or lowering the draft attachment at this end of the machine.

The rear end of the machine is supported on flange wheels I5, and each wheel I5 is journaled on the rearwardly projecting end I5 of a handlever I1, and the hand-levers are pivotally connected by pins I8 to the brackets I9, which in turn are pivotally connected with the back of the blade 3, The hand levers are provided with a latch 20 adapted to engage teeth of the toothed segments 2I carried by the brackets IS. A platform 22 is provided for the operator to stand on when his weight is required, and this is connected by a bar 25 which is pivoted at its outer ends to the brackets I9, and at its center by a bolt 26 to a bar 21, the forward end of which is secured by bolts 28 to the rear end of the pullbeam I, as shown in Fig. 3.

Thus it will be seen that the blade 3 is capable of a wide range of adjustment from. a position perpendicular to the pull-beam to various angles thereto, either to the right or left, accordingly as the dirt is to be thrown to the right or left. With this adjustment, by raising the lever operated latch-pin I, not only the blade 3 but also the cross-bar 2, the bar 25, the bars 4, brackets I9, and the wheels I5 are all adjusted in unison according to the requirement of the work to be done, and in order to get the required tilt to the blade the levers H are operated to raise and lower the wheels I5 to adjust the tilt of the blade from end to end. And by raising the pin I, it is possible to reverse the machine easily and quickly, and by its release to lock the various parts in a predetermined adjusted position and to hold the blade and other parts rigidly so that the blade will cut smoothly and evenly.

I claim:

1. In a machine of the character described, the combination of a pull-beam, two cross-bars pivotally connected therewith, a scraping blade pivotally connected with th pull-beam and located between said cross-bars, gooseneck bars pivotally connected with the scraping blade at their rear ends and pivotally connected with the forward cross-bar at their forward ends, brackets pivotally connected with the scraping blade and rear cross-bar, toothed segments carried by the brackets, latch levers pivoted to the brackets, and wheels rotatably connected with the latch lever.

2. In a machine of the character described, the combination of a pull-beam, two cross-bars pivotally connected therewith, a scraping blade pivotally connected with the pull-beam and to one of the cross-bars, brackets pivotally connected with the scraping blade and with the other of the cross-bars, wheels supporting the outer ends of the brackets, and operating levers adjustably pivoted to the brackets and having axles for the wheels.

3. In a machine of the character described, the combination of a pull-beam, two cross-bars pivotally connected therewith, a scraping blade pivotally connected with the pullbeam and to one of the cross-bars, brackets pivotally connected with the scraping blade and with the other of the cross-bars, wheels supporting the outer ends of the brackets, and operating levers adjustably pivoted to the brackets and having axes for the wheels, a platform supported on the cross-bar which connects the two brackets, and a means for securing the pull-beam, cross-bars, and blade in any predetermined adjusted position.

4. In a machine of the character described, the

combination of a pull-beam, a scraper blade, and a cross-bar at the forward end of the machine, the scraper blade and cross-bar pivotally connected to the pull-beam, goosenecks extending from the scraper blade to the said cross-bar and pivotally connected to the scraper-blade and cross-bar, brackets pivotally connected with the scraper-blade, a cross-bar pivoted to the brackets and to the pull-beam, latch levers adjustably pivoted to the brackets, wheels in which the rear ends of the levers are supported, and means for locking the scraper blade, cross-bars and brackets to the pull-beam at any predetermined angle to the latter.

CHARLES W. CUNDIFF.

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