Scraper and drag attachment

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.

This invention relates to earth working equipment, more particularly, the 
invention relates to earth working scraper and drag equipment. 
It is an object of the invention to provide a novel scraper and drag earth 
working attachment which will provide a dual function of first scraping 
and then applying drag upon the earth which combination attachment may be 
towed behind a vehicle such as a tractor. 
It is another object of the invention to provide a novel combination 
scraper and drag attachment to a tractor having a scraper and drag mounted 
on adjustable wheels, with the height the wheels relative to one another 
being adjustable, and with the height of the drag being adjustable 
relative to the wheels and scraper. 
It is a further object of the invention to provide a novel device for 
attachment to the back of towing vehicle having a scraper and drag mounted 
wheels, with the wheels and drag being adjustable in height relative to 
the scraper. 
Further objects and advantages of the invention will become apparent as the 
description proceeds and when taken in conjunction with the accompanying 
drawings wherein:

BRIEF DESCRIPTION OF THE PREFERRED EMBODIMENT 
Briefly stated, the invention comprises a combination earthworking scraper 
and drag attachment for towing behind a tractor. The attachment has a main 
frame with adjustable wheels adjustable relative to the main frame and to 
one another. A scraper is fixed to the main frame, and first and second 
frames are each individually pivotally mounted to the main frame and 
scraper. The first frame has a pair of arms extending rearward with one 
arm extending over one of the adjustable wheels and the other arm 
extending over the other of the adjustable wheels. A hydraulic piston and 
cylinder is connected between the one arm and the one adjustable wheel and 
a link plate pivotally connects the other arm to the other adjustable 
wheel whereby actuation of the hydraulic piston and cylinder can raise or 
lower the one wheel relative to the other. A drag is mounted to the rear 
of the second frame behind the scraper and an adjustable linkage is 
connected between the first frame and second frame whereby the second 
frame and drag may be raised or lowered relative to the first frame by 
adjusting the linkage. A second hydraulic piston and cylinder is connected 
between the first frame and the main frame whereby the first frame may 
raise or lower the second frame and the adjusted wheels and adjusted drag 
relative to the main frame. 
Referring more particularly to the drawings, in FIGS. 1-4, inclusive, the 
combination scraper and drag attachment invention 20 is illustrated having 
a frame 21 and a scraper 22 fixed to the main frame 21 and a drag member 
23 attached at the rear of the invention. A first frame 24 has a rod 24', 
which rod is pivotally mounted in sleeves 21', which sleeves are fixed to 
the rear of the scraper. A hydraulic piston and cylinder 25 has its 
cylinder pivotally mounted to the main frame 21 and its piston pivotally 
mounted to the first frame 24. The first frame 24 has a pair of lever arms 
26 and 27 fixed to the outer ends of the rod 24' and extend rearward. A 
pair of wheels 28 and 29 are rotatably mounted on wheel frames 30 and 30', 
and the wheel frames 30 and 30' are pivotally mounted to the main frame 
and back of the scraper at pivots 30" to enable each wheel frame to 
individually pivot on the back of the scraper and main frame. The one 
wheel frame 30 has a pivot rod 31 with its outer ends-pivotally connected 
between the one wheel frame 30 and the one lever arm 26. The other wheel 
frame 30' has a second piston and cylinder 32 with the piston 32' 
pivotally connected to the other lever arm 27 and its cylinder 32" 
pivotally connected to the other wheel frame 30'. 
A second V frame 33 has a separate second pivotal mounting to the scraper 
and main frame at pivots 34 and 34'. A pair of diagonal arms 36 and 37 
have their lower ends fixed to the back of the scraper and fixed in 
relation to the main frame. A pair of chains 35 and 35' have the one ends 
fixed to the second V frame 33 and their other ends adjustably mounted in 
slots 36' and 37' at the outer ends of the arms 36 and 37. The second V 
frame 33 has a pivot 33' at its rearward end and the drag member 23 is 
pivotally mounted to the second V frame at a location intermediate the 
ends of the elongated drag member 23 at pivot 33'. 
The second, hydraulic piston and cylinder 32, connected between the second 
wheel frame 30 and the lever arm 27 of the first frame 24, can be 
hydraulically actuated to raise or lower the second wheel frame 30 and its 
wheel relative to the first wheel frame 30 and its wheel 28 and its rod 
connection to the other lever arm 26 of the first frame 24 to place the 
wheels at a lateral angle to one another. The first hydraulic piston and 
cylinder 25 being pivotally connected between the main frame 21 and the 
first frame 24 and its lever arms 25 and 26 can be hydraulically actuated 
to either raise or lower the lever arms 25 and 26 simultaneously and 
thereby raise or lower the second V frame and the drag member about its 
second pivotal connections 34 and 34' to the main frame to thereby raise 
and lower the drag member 23 mounted at the end of the V frame, and by 
raising and lowering the lever arms to raise and lower the wheel frames 
and wheels at their selected angle to one another selected by the 
adjustment of the second hydraulic piston and cylinder 32. 
A hitch member 38 is mounted to the front of the main frame 21 in front of 
the scraper 22 for towing the scraper and drag member on the wheels 28 and 
29. 
OPERATION 
The combination scraper and drag attachment operates as follows: 
The hitch 38 will be attached behind a tractor and the attachment may be 
used to scrape fairways-of golf courses and the like level with the 
scraper and then follow with the drag member to smooth the ground further. 
The wheels 28 and 29 will be raised and lowered relative to the main frame 
21 by actuation of the hydraulic piston and cylinder 25 to telescope or 
retract the piston relative to the cylinder to pivot both wheels about 
their pivotal mountings 29' and 30' to the main frame and scraper along 
the back of the scraper, with the raising or lowering of the wheels acting 
to change the depth of the cut of the blade like front edge 42 of the 
scraper into the ground as the attachment is towed along the ground, by 
the action of piston and cylinder raising and lowering the first frame to 
thereby raise and lower the wheels. This action through of raising and 
lowering the scraper and its blade also raises and lowers the second frame 
thereby raising and lowering them drag. The drag may be raised and lowered 
relative to the first frame scraper and main frame, and relative to the 
ground by adjusting its height of the rear end of the second V frame 
relative to the first frame and scraper. This is done by adjusting the 
links of the chains 35 and 35' in the slots 36' and 37' of the ends of the 
arms extending from the main frame and scraper. The drag may be lowered to 
place it into operation, together with the scraper operations to provide 
both operations simultaneously. Alternatively, it may be raised upward 
entirely above the ground and put out of operation and the scraper 
operated alone. 
The wheels 28 and 29 may be adjusted relative to one another when it is 
desired to angle the scraper and or drag along the angular hills and 
angular terrain and it is found it is necessary to cut at a difference 
angle with respect to the grounds to create angular terrain for a golf 
course, for example, when one doesn't want the course flat. Also, it can 
be used with one corner of the scraper blade lowered to create a slope in 
the course. 
Thus, it will be seen that a novel combination scraper and drag attachment 
has been provided which can be towed behind a tractor and which can be 
operated in a variety of different ways to perform different earthworking 
functions. 
It will be obvious that various changes and departures may be made to the 
invention without departing from the spirit and scope thereof; and 
accordingly, it is not intended that the invention be limited to that 
specifically described in the specification or as illustrated in the 
drawings, but only as set forth in the appended claims wherein: