U.S. patent application number 09/790758 was filed with the patent office on 2002-01-03 for topper and shredder.
Invention is credited to Heard, Martin Perry.
Application Number | 20020000081 09/790758 |
Document ID | / |
Family ID | 26892496 |
Filed Date | 2002-01-03 |
United States Patent
Application |
20020000081 |
Kind Code |
A1 |
Heard, Martin Perry |
January 3, 2002 |
Topper and shredder
Abstract
An agricultural implement attached to a farm tractor by a three
point hitch is used to cut the top of mature cotton stalks, or
shred harvested crops or mow turn rows. Knives are mounted on the
bottom of vertical shafts which are rotated by belt driven pulleys.
The pulleys are driven from a right angle gear box which is driven
from the power take off of the tractor. The knives are staggered
along either side of a beam traverse to the direction of travel, so
that the knives cannot strike other knives as they mow over-lapping
swaths.
Inventors: |
Heard, Martin Perry;
(Lubbock, TX) |
Correspondence
Address: |
WENDELL COFFEE
P.O. BOX 3726
LUBBOCK
TX
794523726
|
Family ID: |
26892496 |
Appl. No.: |
09/790758 |
Filed: |
February 22, 2001 |
Related U.S. Patent Documents
|
|
|
|
|
|
Application
Number |
Filing Date |
Patent Number |
|
|
60197043 |
Apr 14, 2000 |
|
|
|
Current U.S.
Class: |
56/6 ;
56/11.6 |
Current CPC
Class: |
A01D 47/00 20130101;
A01D 34/76 20130101 |
Class at
Publication: |
56/6 ;
56/11.6 |
International
Class: |
A01D 075/30; A01D
069/08 |
Claims
1. The structure of an agricultural topping and shredding device
comprising: a) a horizontal frame having a front and back along a
length of the frame and a side at each end of the frame, b) a
plurality of knife pulleys, each attached to c) a vertical knife
shaft journalled in d) a bearing attached to said frame along the
length thereof, e) a knife attached to the lower portion of each
vertical shaft, f) a right angle gear box attached to the middle of
the frame between two of said knife pulleys, f') at least four
knife pulleys and the associated knife shafts, bearings, and knives
nearest the gear box forming the inside pulleys, shafts, bearings,
and knives, g) a horizontal power shaft extending from the gear
box, h) a vertical power shaft extending from the gear box, i) two
power pulleys attached to the vertical power shaft, and j) two
power belts, one belt trained over one of said power pulleys and
over an adjacent knife pulley which is adjacent the gear box, and
the other belt trained over the other power pulley and over the
other adjacent knife pulley which is adjacent the gear box.
2. The structure as defined in claim 1 further comprising: k) an
agricultural tractor having a three point hitch and a power take
off shaft, l) the three point hitch attached to the horizontal
frame, and m) the power take off shaft connected to the horizontal
power shaft.
3. The structure as defined in claim 1 wherein: k) the distance
from each inside vertical knife shaft to the nearest inside
vertical knife shaft is the same for all inside vertical knife
shafts.
4. The structure as defined in claim 1 wherein: k) the diameter of
each inside knife pulley is the same.
5. The structure as defined in claim 1 further comprising: k) an
end knife pulley adjacent each side of the frame, l) each end knife
pulley attached to an end vertical knife shaft, m) each vertical
knife shaft, except the end vertical knife shafts, attached to two
knife pulleys, and n) a belt from each knife pulley to an adjacent
pulley.
6. The structure as defined in claim 1 wherein: k) each of said
knives are attached at their center to the vertical shaft.
7. The structure as defined in claim 6 wherein the length of each
inside knife is less than the distance between the axis of the
shaft to which it is attached and the axis of an adjacent knife
shaft.
8. The structure as defined in claim 1 further comprising: k) a
main center beam extending lengthwise along the frame, l) said
bearings mounted on the main center beam, on the opposite side of
the main center beam from the closest bearing on each side.
9. The structure as defined in claim 8 wherein: m) each knife is
attached at its center to the vertical shaft.
10. The structure as defined in claim 9 wherein: n) each inside
knife having the same length and o) the length of each inside knife
being greater than half the distance between the axis of the shaft
to which it is attached and the axis of the nearest inside shaft on
the same side of the main center beam.
11. The structure as defined in claim 10 wherein the length of each
knife is less than the distance between the axis of the shaft to
which it is attached the axis of and an adjacent knife shaft.
12. The structure as defined in claim 1 further comprising: k) leg
tubes attached to the frame, l) two legs, m) each leg inserted in a
leg tube, and n) a wheel journalled upon each leg.
13. The structure as defined in claim 12 further comprising: o) two
of the leg tubes are gage tubes attached to the of the frame, p) a
front of each leg is higher than the rear of each leg, and q) the
wheels function as gage wheels when the device is in operation.
14. The structure as defined in claim 12 further comprising: o) one
of the tubes is a trail tube attached to the back of the frame, p)
and one of the tubes is a trail tube attached to the front of the
frame, with q) each of the wheel axles parallel to the sides of the
frame with the legs inserted in the trail tubes so that the wheels
function as trailer wheels when the device is being towed.
15. The structure defined in claim 14 further comprising: r) two of
the tubes are gage tubes attached to the back of the frame, s) the
gage tubes are attached to the frame so that a leg attached the
gage holder have a front higher than a rear, and t) each wheel axle
is parallel to the back of the frame.
16. The structure as defined in claim 1 further comprising: k) each
belt having a taut run and a slack run, and l) an idler pulley
forced against the slack run.
17. The structure defined in claim 5 further comprising: o) each
belt having a taut run and a slack run, and p) an idler pulley
forced against the slack run.
18. The structure of an agricultural topping and shredding device
comprising: a) a horizontal frame having a front and back along a
length of the frame and a side at each end of the frame, b) a
plurality of knife pulleys, each attached to c) a vertical knife
shaft journalled in d) a bearing attached to said frame along the
length thereof, e) a knife attached to the lower portion of each
vertical shaft, f) a right angle gear box attached to the frame in
the middle of the frame between two of said knife pulleys, f') at
least four knife pulleys and the associated knife shafts, bearings,
and knives nearest the gear box being the inside pulleys, shafts,
bearings, and knives, g) a horizontal power shaft extending from
the gear box, h) a vertical power shaft extending from the gear
box, i) two power pulleys attached to the vertical power shaft, j)
two power belts, one belt trained over one of said power pulleys
and over an adjacent knife pulley which is adjacent the gear box,
and the other belt trained over the other power pulley and over the
other adjacent knife pulley which is adjacent the gear box, k) an
agricultural tractor having a three point hitch and a power take
off shaft, l) the three point hitch attached to the horizontal
frame, and m) the power take off shaft connected to the horizontal
power shaft, n) shank holders attached to the frame, o) two shanks,
p) each shank attached to a shank holder, and q) a wheel journalled
upon a shank axle on each shank, r) two of the shank holders are
gage holders attached to the back of the frame, with s) the shank
axles parallel to the back of the frame so that the wheels function
as gage wheels when the device is in operation.
19. The method of towing an agricultural implement having front,
back, and two side identified as front side and back side with the
distance from side to side at least twice the distance from front
to back, and an attachment for connecting the implement to a
tractor located on the front equal distance between the sides,
comprising the steps of: a) attaching a tow tube on the front at a
short distance from the back side, b) attaching a tow tube on the
back at said short distance from the back side, c) attaching a
towing hitch to the front side of the implement, d) placing a leg
of a wheel assembly including wheel with an axle in one of the tow
tubes and placing a leg of a another wheel assembly including a
wheel with an axle in the other of the tow tubes with the axles of
the wheels co-axial, and e) towing the implement to a desired
location by pulling the towing hitch.
20. The method of operating an implement at the location to which
it has been towed by the method as defined in claim 19 comprising:
f) attaching two gage tubes to the back of said implement, g)
removing the legs from the tow tubes h) placing the legs in the
gage tubes, with the axles of the wheels co-axial, and i) operating
the implement by a tractor connected to said attachment.
Description
CROSS REFERENCE TO PROVISIONAL PATENT APPLICATION
[0001] The applicant claims the benefit of his U.S. Provisional
Application No. 60/197,043, filed Apr. 14, 2000.
BACKGROUND OF THE INVENTION
[0002] (1) Field of the Invention
[0003] This invention relates to machines for farming and more
particularly to machines for treatment of annual crops, preparation
of the plants for harvesting, shredding harvested crops, and mowing
uncultivated lands such as turn rows, or turn abouts, or road
sides.
[0004] For example a machine according to this invention is used
for cutting the tops off of cotton plants before harvesting. Also
the machine is adapted to shred the remains of cotton and other
annual crops after harvesting. Farmers have ordinary skill in this
art.
[0005] (2) Description of the Related Art
[0006] Shredder units are known to the prior art. However, normally
these prior art shredders have a rotating shaft extending to each
of three individual units. Each individual unit has a right angle
gear drive upon it. Normally each unit will have an 80 inch blade
with the surrounding cover. This results in a heavy expensive
unit.
[0007] MARQUIS ET AL, U.S. Pat. No. 1,325,406 issued Dec. 16, 1919,
discloses a cutter for topping cotton for boll-weevil control. The
cutting mechanism for MARQUIS was sickle bar cutters.
[0008] SAMPEI ET AL, U.S. Pat. No. 4,962,636 issued Oct. 16, 1990,
discloses a lawn mower having three cutting knives attached to
vertical shafts. The knives as a unit with the individual belt
drive are mounted for raising and lowering with respect to the
frame of the vehicle. The motor drive belt remains at a constant
height on the vehicle.
[0009] KAWASAKI ET AL U.S. Pat. No. 4,291,522 issued Sep. 29, 1981
is similar to SAMPEI ET AL except the cutting unit which is raised
and lowered includes a right angled gear box which is raised and
lowered with the cutting knives. There are three cutting knives one
which is mounted on the same shaft as the right angle gear box and
the other two are driven by a single belt twining about pulleys on
the shaft holding the knives of each unit.
[0010] WALLACE U.S. Pat. No. 1,799,714 issued Apr. 7, 1931
discloses a lawn mower having three vertical shafts with a cutting
knife on each vertical shaft. The center vertical shaft is driven
by the shaft of an electric motor and the other two shafts are
driven by separate belts from the electric motor to the pulley upon
the shaft. The entire cutting assembly of Wallace may be raised or
lowered by raising or lowering the cutting mechanism frame with
respect to the lawn mower frame.
SUMMARY OF THE INVENTION
[0011] (1) Progressive Contribution to the Art
[0012] This invention is for a shredder or topper which is readily
attachable to modern tractors with three point hitches. A wide
swath is made which may cover as much as eight 40 inch rows of
cotton at one pass. To enable the tractor to carry this equipment
requires that the equipment be light weight. Therefore the cutting
knives are driven by belt drives which are lighter as well as less
expensive than gear drives. The knives are mounted upon vertical
shafts. All the shafts are of the same length for uniform cutting
height. To avoid contact of the adjacent knives, the knives are
staggered on either side of a beam. In this way the paths of
adjacent knives may over lap but the adjacent knives are spaced
apart. When mowing, an overlap is desirable so a gap is not
present. Most of the cutting assemblies for each row are identical
thereby reducing the amount of repair parts needed.
[0013] When the implement is used to mow turn rows a swath of about
20 feet (six 40 inch rows) or less is desirable because of
maneuvering necessary. However, when topping an additional two rows
is desirable. Therefore a basic unit with six knife units is built
with two attachable wings to carry another knife unit each is
desired.
[0014] When topping cotton, the top of the plants in the drill are
the only concern; therefore it is not important that the knives
overlap. Therefore on the wings a wing shaft 40" from the permanent
out board shaft with a 25 inch knife is adequate.
[0015] Also provisions are made to have a single set of wheels
which maybe used as gage wheels when the unit is in operation in
the field and which may also be used as trailer wheels when the
unit is being to towed from one field to the other or to storage
area.
[0016] Skids are mounted on each side of the implement to prevent
the knives from contacting the ground. Spring loaded idler pulleys
bear against the slack run of each belt to insure against belt
slippage. Also the idler pulleys lengthen the life of the
belts.
[0017] (2) Objects of this Invention
[0018] An object of this invention is to provide an implement which
may be used (1) to rapidly cut the tops from plants before harvest,
(2) to shred plants left standing after harvest, and (3) to mow
weeds around the fields.
[0019] Another object is to provide such an implement which with
only one set of wheels so that one set of wheels may be used both
to be used as gage wheels and trailer wheels.
[0020] Further objects are to achieve the above with a device that
is sturdy, compact, durable, lightweight, simple, safe, efficient,
versatile, ecologically compatible, low maintance energy
conserving, and reliable, yet inexpensive and easy to manufacture,
attach, operate, and maintain.
[0021] The specific nature of the invention, as well as other
objects, uses, and advantages thereof, will clearly appear from the
following description and from the accompanying drawings, the
different views of which are not necessarily scale drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
[0022] FIG. 1 is a plan view of an implement attached to a tractor
which is an embodiment of the invention.
[0023] FIG. 2 is sectional elevational view taken substantially on
line 2-2 of FIG. 1.
[0024] FIG. 3 is an enlarged plan view of the center portion of the
implement.
[0025] FIG. 4 is an enlarged plan view of one end of the
implement.
[0026] FIG. 5 is a front elevational view of the implement shown in
FIG. 4.
[0027] FIG. 6 is a plan view of one end of the implement with an
added knife unit attached.
[0028] FIG. 7 is a perspective view of an idler pulley unit.
CATALOGUE OF ELEMENTS
[0029] As an aid to correlating the terms of the claims to the
exemplary drawing(s), the following catalog of elements and steps
is provided:
1 10 implement 66 idler shaft 12 3-point hitch 68 idler 14 tractor
70 eye 16 PTO 72 adjustment bolt 17 horizontal shaft 74 clip 18
right gear box 76 winged nut 19 vertical shaft 78 blocking pin 20
blades 80 tubes 24 frame 82 leg 26 main center beam 84 wheel 28
back 86 plate 30 front 88 stands 31 cross brace 90 ends 32 side 91
square tubing 33 side 92 larger square tubing 34 cross bar 94 stand
holder 35 top groove 96 trailer hitch 36 bottom groove 98 swivel
joint 38 bearing (back) 99 square tubing 39 knife shaft (front) 100
additional unit 40 knife shaft (back) 126 added center beam 42
knife, knives 128 added back 50 knife pulley 129 stub 52 power
pulley 130 added front 54 front belt 142 added knife 56 back belt
146 added knife shaft 60 arm 150 added knife pulley 62 shaft 158
added belt 64 spring
DESCRIPTION OF THE PREFERRED EMBODIMENTS(S)
[0030] This machine, an implement, is built to use on farms of
annual crops, such as cotton. The implement is to be used as a
shredder, mower, or topper; however, it is some times referred to
as "shredder" herein.
[0031] Referring to the drawings, FIG. 1 shows a top plan view of
the shredder in a six row mode.
[0032] Implement 10 is adapted to be attached to a farm tractor 14
by a conventional three point hitch 12. The implement 10 will be
driven by a power take off 16 (PTO) which extends from the tractor
14 to right angle gear box 18 mounted upon the implement. The three
point hitch is well known in the agriculture arts and it permits
the implement 10 to be raised to an elevation of about three feet
above the ground where it is used as a topper to sever the terminal
bud from the cotton plant. The topper procedure is for the purposes
of permitting defoliants to be readily applied to the plant, and
harvesting of cotton.
[0033] The implement may be lowered by the three point hitch so
that it is about three inches off the ground. At this height it is
used to shred the stalks after a crop has been harvested or to mow
turnrows of other growths or weeds. By height is meant the height
of blades 20 on knifes 42.
[0034] Frame 24 is formed by elongated square tubes. Main center
beam 26 is a square tube and extends along the middle of the frame
24. A front 30 is formed by a square tube on the forward portion of
the frame. A back 28 is formed by a square tube on the rear of the
frame. Side 32 and side 33 are flat plates connected to front 30,
center beam 26, and back 28.
[0035] The right angle gear box 18 is attached on cross bars 34
which extend beneath the front 30, back 28, and center beam 24. The
cross bars, also square tubes, are attached to the front, back, and
center beam. The gear box has horizontal power shaft 17, connected
to the PTO 16. Vertical power shaft 19, with attached power pulley
52 having top groove 35 and bottom groove 36, extends from the gear
box 18.
[0036] Front knife bearing (not shown) with vertical front knife
shaft 39 is attached to the front of center beam 26. Back knife
bearing 38 with knife shaft 40 is attached to the back of center
beam 26 on the opposite side of gear box 18 from the front knife
bearing (See FIG. 3). Projected to the center of the center beam
26, the axis of back knife shaft 40 is 20 inches from the axis of
vertical shaft 19. Also projected to the center of the center beam
26, the axis of knife shaft 39 is 20 inches from the axis of the
vertical shaft 19 on the opposite side from shaft 40. The distance
from the axis of shaft 39 to the axis of shaft 40 is about 42
inches.
[0037] Each knife shaft 39 and 40 has a knife 42 about 401/2 inch
in length. Therefore it may be seen that as the knives are attached
at their center to the bottom of the knife shafts that the tips
will be over an inch from each other as they rotate. However, as
the knives mow, each will cut a swath of 401/2 inch wide on 40 inch
centers. Stated otherwise, there will not be a gap between swaths.
It is noted that each knife is shorter than the distance between
adjacent knife shafts.
[0038] Each of the knives 42 are sharpened at each end to form the
blades 20, which are the cutting edges.
[0039] Each of the knives 42 have a hole through the center for
attachment to the bottom of the knife shafts. Each knife shaft is
attached to a knife bearing, either knife bearing 39 or an
additional knife bearing. The knife bearings alternate being on the
forward side of the main beam 26 and on the rear of the main beam
26. The knife bearings spaced 40 inches on center measured along
the center tube 26. Stated otherwise, the knife bearings on the
front of the main beam are spaced at 80" on center and the bearing
on the back of the main beam are also 80" on center. Therefore any
vegetation along the entire strip of 20 feet (on the six row
models) will be mowed by the blades without gaps. Each of the
bearings will have a knife shaft journalled therein, either shaft
39 or 40 or additional knife shaft 46.
[0040] Each of the knife shafts will have a knife pulley 50
attached to the top. Each pulley will have two grooves thereby
accommodating two V-belts. It may be seen in the drawings on one of
the two V-belts grooves 35 and 36 on the power pulley 52 has front
belt 54 which extends to the pulley 50, which is on the front shaft
39. Likewise a back belt 56 extends from the other groove in gear
box pulley 52 to the pulley on the back shaft 40. Likewise an
additional belt 58 on each of the pulleys 50 extends to each pulley
on a shaft adjacent it.
[0041] Tension idlers 68 are attached to the frame 24 to be
adjusted to keep the proper tension upon the belts 54 and 56.
[0042] Each of the idlers 68 is mounted upon arm 60 which is
pivoted about a shaft 62 in the form of a threaded bolt. The idler
68 is pulled toward the belt 56 by spring 64. The spring is
attached to an extension of idler shaft 66 upon which the idler 68
is mounted. The other end of the spring 64 is attached to the eye
70 of adjustment bolt 72. The adjustment bolt 72 extends through to
clip 74. The clip 74 might be connected to either the center beam
26 or cross brace 31 which extends from the front 30 to the back
28. Increase of tension on the belt, whether caused by speed or
power, causes the belt to stretch. The adjustable spring tension
maintains the belt tension, thus keeping the belt tightness
constant on the pulleys at all times.
[0043] The adjustable spring tension idler has the advantage
of:
[0044] 1. The belt tightener must be sensitive at all times. It
must slip when the blade hits an unmovable object, but must hold to
cut tough vegetation.
[0045] 2. The spring stretches, not the belt. the stretch of the
spring makes the longevity of the belt greatly increased preventing
the stretching of the belt makes the longevity of the belt much
greater.
[0046] The spring loaded idler eliminates the adjustments needed
when a fixed idler is used. The adjustable spring tension idler has
a wing nut 76 with a locking pin 78 making it easy to adjust the
tightness of the belt and keeping it that way.
[0047] Instead of attaching the idler to a cross brace 31 it will
be understood the idler could also be attached to the main center
beam 26.
[0048] For normal topping operation the frame 24 is elevated to the
desired elevation by the three point hitch 12. Often during use it
will be desired to regularly change the height depending upon the
height of the crop being topped at that time.
[0049] When the implement is being used as a mower or shredder it
is desired to have the implement close to the ground; for example
within three inches of the ground. It is also important that the
knives not strike the earth, which puts undue strain upon the
implement Therefore it is desired to have gage wheels mounted upon
implement.
[0050] Tubes 80 are attached to the back 28 of the implement. As
seen in FIG. 2 it will be noted that they are angled downward to
the rear. Leg 82 in the form of square tubing is telescoped or
spaced within the square tubing of the tube 80. The leg 82 is
locked in position by a clamp (not shown). Wheel 84 with a
pneumatic tire attached to the leg 82 engages the ground. The wheel
84 may be moved closer to the back 28 of the implement, 10, thus
positioning the implement closer to the ground. Also extending the
wheel 84 rearwardly will elevate the implement.
[0051] In certain operations it is desired to pull some object
behind the implement. For this reason a plate 86 is attached to the
back 28 at the center thereof. A hole through the plate forms the
hitch by which the object may be attached to follow the
implement.
[0052] Ends 90 include a plate with square tubing 91 extending from
it. The tubing 91 may slip into the square tubing forming the front
30 and the back 28 of the implement. Also a larger square tubing 92
is placed in the center to slip into the main center beam 26. With
these locked into position, a stand holder 94 is attached to the
ends 90. Therefore a smaller square tubing stands 88 may be slipped
within this so that it can be raised or lowered to keep the
implement and particularly the knives above ground.
[0053] Thus on the sides 32 and 33 have stands 88 to support the
implement with the knives above the ground. It will be understood
if the knives 42 are resting upon the ground that they will tend to
rust, thus dulling the blades 20. When the stands or supports are
not being used for that purpose the stands 94 can be raised out of
position.
[0054] Also a trailer hitch 96 maybe attached to the end 90 as an
extension of the larger square tubing 92. A jack 97 is attached to
the end 90 by a swivel joint 98. By the swivel joint the jack 97
may be swung into a vertical position as seen in FIG. 5 whereby the
end of the implement may be raised and lowered making it easier to
attach the hitch 96 onto a towing vehicle. Square tubing 99
attached to the front 30 and the back 28. The legs 82 are
disengaged from the tubes 80 and inserted into the square tubing
99. With the axles of the wheels 84 parallel to the sides 32 and 33
the implement may be towed by the hitch 96.
[0055] In the topping operation, the implement 10 may be changed
from six row operation to eight row operation. An additional knife
unit 100 is added to each side of the implement. FIG. 6 illustrates
the added additional units 100. Each unit 100 has an added front
square tubing 130 as well as on added back square tubing 128 and
the main center beam 126. Each of these elements would have a stub
129 attached to it to slide into the square tubing 26, 28, and 30.
With this in place, an added bearing (not shown) with a added knife
pulley 150 on added knife shaft 146 is added on the center beam
126. It is desired that an added knife 142 be shorter than knives
42. When the implement has the added knives it would be used only
as a topping implement, therefore a shorter knife would be
sufficient. The topping operation has no need to have the over lap
of the knives as is required when using the implement for mowing or
shredding.
[0056] Although the basic implement has been described as a six row
topper it will be understood that a four row basic implement might
be built and used. The basic unit having the knife pulleys, shafts,
bearings, and knifes of the same length are called inside knife
pulleys, shafts, bearings, and knives to distinguish them from the
added knives.
[0057] The embodiment shown and described above is only exemplary.
I do not claim to have invented all the parts, elements or steps
described. Various modifications can be made in the construction,
material, arrangement, and operation, and still be within the scope
of my invention.
[0058] The restrictive description and drawings of the specific
examples above do not point out what an infringement of this patent
would be, but are to point out the advantages and the progressive
contribution to the agricultural arts and to enable one skilled in
the art to make and use the invention. The limits of the invention
and the bounds of the patent protection are measured by and defined
in the following claims.
* * * * *