초록 ▼

The invention comprises a scraper and drag attachment for a tractor. The attachment has a main frame with a hitch at it forward end for attachment to a tractor. A scraper is fixed to the main frame behind the hitch and a first pivotal frame is pivotally mounted to the main frame behind the scraper.

The invention comprises a scraper and drag attachment for a tractor. The attachment has a main frame with a hitch at it forward end for attachment to a tractor. A scraper is fixed to the main frame behind the hitch and a first pivotal frame is pivotally mounted to the main frame behind the scraper. A pair of wheel frames each having a wheel rotatably mounted thereon are individually pivotally mounted to the main frame behind the scraper and laterally adjacent one another. A piston and cylinder is pivotally connected between the first frame and one of the wheel frames and a rod has its end pivotaly connected between the other wheel frame and the first frame; and a second piston and cylinder is pivotally connected between the main frame and the first frame, whereby the first piston and cylinder may be actuated to telescope or retract to pivot the one wheel frame and its wheel at an up or down, relative to the second wheel frame and its wheel, to an adjusted angle, and the second piston and cylinder may be actuated to raise or lower the first frame and wheel frames with the wheel frames and wheels remaining at their adjusted angular position relative to one another. A drag is pivotally mounted on a second frame which second frame is pivotally mounted to the main frame and a pair of chains are adjustably connected between the second frame and first frame whereby raising and lowering the first frame will raise and lower the drag with drag at a height relative to the device depending upon, the chain adjustment between the first frame and second frame.

대표청구항 ▼

[ What is claimed is:] [1.] A scraper and drag implement attachment for a tractor comprising a main frame, a scraper fixed to said main frame, a first pivotal frame and a second frame, said first pivotal frame being pivotally mounted adjacent said scraper, said second frame having a pair of legs ext

[ What is claimed is:] [1.] A scraper and drag implement attachment for a tractor comprising a main frame, a scraper fixed to said main frame, a first pivotal frame and a second frame, said first pivotal frame being pivotally mounted adjacent said scraper, said second frame having a pair of legs extending forward with their forward ends pivotally mounted adjacent the rear of the scraper, an elongated drag member pivotally mounted intermediate its length to the rearward end of the second frame, arm means fixed adjacent the rear of the scraper and extending over the second frame, said arm means having adjustable connection means at its rearward ends, elongated connection means extending from the rearward portion of the second frame upward to the arm means and adjustably connected to said adjustable connection means to adjustably support the rear of the second frame at a selected height relative to the scraper, a pair of wheel frames each pivotally mounted at their one ends adjacent the scraper, each of said wheel frames having a wheel rotatably mounted thereon adjacent the other end of the wheel frames, a pair of wheel frame arms mounted to said first pivotal frame and extending rearward with hydraulic means to pivot said first frame to pivot said flame arms upward and downward, link means pivotally connected at its one end to one of said wheel frames with its other end pivotally mounted to one of the wheel frame arms to raise and lower the one wheel frame, a fluid piston and cylinder means connected between the other wheel frame and the other wheel frame arm to adjustably raise and lower the other wheel frame and other wheel relative to the one wheel frame, whereby said hydraulic means act to raise and lower the frame arms simultaneously to raise and lower the wheels simultaneously, with said fluid piston and cylinder means adjusting the height of the one wheel frame relative to the other while raising and lowering the wheel frames simultaneously.