U.S. patent application number 14/058383 was filed with the patent office on 2014-02-13 for grain cart having a discharge conveyor and method of transferring grain with grain cart.
This patent application is currently assigned to J&M MANUFACTURING CO., INC.. The applicant listed for this patent is J&M Manufacturing Co., Inc.. Invention is credited to James E. Wood.
Application Number | 20140044511 14/058383 |
Document ID | / |
Family ID | 44839530 |
Filed Date | 2014-02-13 |
United States Patent
Application |
20140044511 |
Kind Code |
A1 |
Wood; James E. |
February 13, 2014 |
GRAIN CART HAVING A DISCHARGE CONVEYOR AND METHOD OF TRANSFERRING
GRAIN WITH GRAIN CART
Abstract
A grain cart has a wheel supported frame on which is mounted an
open top container having inclined bottom walls and including a
discharge auger conveyor having a lower section extending from a
sump for the container adjacent a front left inclined corner
portion of the container. The auger conveyor has an extended upper
section supported by a hinge assembly having a pivot axis offset
and askewed at an acute angle from the auger axis. The hinge
assembly provides for pivoting the upper conveyor section between
an inclined grain discharge position projecting upwardly, laterally
outwardly and forwardly from the container and a stored position
inclined downwardly at a substantial angle from the hinge assembly
in front of the container. In the stored position, the grain
discharge outlet is located lower than the top surfaces of the
wheels.
Inventors: |
Wood; James E.; (Ft.
Recovery, OH) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
J&M Manufacturing Co., Inc. |
Ft. Recovery |
OH |
US |
|
|
Assignee: |
J&M MANUFACTURING CO.,
INC.
Ft. Recovery
OH
|
Family ID: |
44839530 |
Appl. No.: |
14/058383 |
Filed: |
October 21, 2013 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
13200694 |
Sep 28, 2011 |
8585343 |
|
|
14058383 |
|
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|
12074956 |
Mar 7, 2008 |
8047757 |
|
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13200694 |
|
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Current U.S.
Class: |
414/526 ;
414/809 |
Current CPC
Class: |
B60P 1/42 20130101; A01D
90/10 20130101 |
Class at
Publication: |
414/526 ;
414/809 |
International
Class: |
A01D 90/10 20060101
A01D090/10 |
Claims
1. A method for transferring grain from a grain cart in a field to
a trailer, the grain cart including a container for receiving a
volume of grain and defined by a front wall portion and side wall
portions extending from the front wall portion, a lower auger
conveyor section, and an upper auger conveyor section, the method
comprising: unfolding the upper auger conveyor section relative to
the lower auger conveyor section from a retracted, stored position
in which the upper auger conveyor section is located along the
front wall portion of the container and extends substantially
between the side wall portions to facilitate transporting the grain
cart, to an upwardly inclined grain discharge position in which the
upper and lower auger conveyor sections communicate with one
another and in which the upper conveyor section extends upwardly,
laterally outwardly, and forwardly relative to a junction between
the front wall portion and one of the side wall portions, the
unfolding including a pivotal movement of the upper auger conveyor
section about an oblique pivot axis that is oriented oblique
relative to longitudinal axes of the upper and lower auger conveyor
sections and oriented oblique relative to planes perpendicular to
the longitudinal axes of the upper and lower auger conveyor
sections, transferring the volume of grain from the container
through the upper and lower auger conveyor sections into the
trailer, and folding the upper conveyor section relative to the
lower auger conveyor section by pivoting the upper conveyor section
about the oblique pivot axis from the grain discharge position to
the stored position.
2. The method of claim 1, wherein the unfolding and folding steps
further comprise: moving the upper auger conveyor section relative
to the lower auger conveyor section about the oblique pivot axis
with a power actuator connected to the upper auger conveyor
section.
3. The method of claim 1, wherein the upper auger conveyor section
includes a first end located proximate the oblique pivot axis and a
second end opposite the first end, and the unfolding step further
comprises: moving the first end of the upper auger conveyor section
into abutment with the lower auger conveyor section at the grain
discharge position.
4. The method of claim 3, wherein the container is supported by a
frame including a set of wheels, and the folding step further
comprises: moving the second end of the upper auger conveyor
section below a top surface of the set of wheels at the stored
position.
5. The method of claim 3, wherein the lower auger conveyor section
includes a terminal end located proximate to the oblique pivot axis
and at or behind the front wall portion of the container, and the
unfolding step further comprises: rotating the first end of the
upper auger conveyor section around the junction between the front
wall portion and the side wall portion of the container as the
upper auger conveyor section pivots between the stored position and
the grain discharge position.
6. A grain cart for transferring grain from a combine in a field to
a trailer, said cart comprising a container for receiving a volume
of grain and having a lower interior portion, a front wall portion,
a pair of side wall portions and first and second opposite, upper
corner portions located proximate intersections of said front wall
with said respective side wall portions, a conveyor including a
lower conveyor section that is upwardly and forwardly inclined and
an upper conveyor section, said lower conveyor section having an
inlet positioned proximate said lower interior portion of said
container to receive grain from within said container and transport
the grain to said upper conveyor section, said upper conveyor
section supported by a hinge adjacent one of said upper corner
portions, said hinge operative to allow a folding movement of said
upper conveyor section relative to said lower conveyor section
about a pivot axis and between an upwardly inclined grain discharge
position and a retracted, stored position, wherein said upper
conveyor section is coupled with said lower conveyor section in
said upwardly inclined grain discharge position to receive grain
from said lower conveyor section and said upper conveyor section
extends upwardly, laterally outwardly, and forwardly relative to
one of said upper corner portions in said upwardly inclined grain
discharge position, and wherein in said retracted, stored position,
said upper conveyor section is located along said front wall and
oriented at a downward angle below a horizontal plane at said hinge
such that said upper conveyor section extends from said hinge to an
opposite side of said container from said hinge while remaining
substantially between said side wall portions to facilitate
transporting said grain cart, a power actuator connected to move
said upper conveyor section between said retracted, stored position
and said upwardly inclined grain discharge position, and said pivot
axis being oriented oblique relative to longitudinal axes of said
upper and lower conveyor sections and oriented oblique relative to
planes perpendicular to said longitudinal axes of said upper and
lower conveyor sections.
7. The grain cart of claim 6, wherein said hinge includes a first
hinge member coupled with said lower conveyor section, a second
hinge member coupled with said upper conveyor section, and a hinge
pin pivotally connecting said first hinge member to said second
hinge member.
8. The grain cart of claim 6, further comprising: a frame supported
by a set of wheels including first and second front wheels, said
frame supporting said container.
9. The grain cart of claim 8, wherein said upper conveyor section
includes an outer discharge end and said outer discharge end is
located below upper surfaces of said wheels when said upper
conveyor section is in the retracted, stored position.
10. The grain cart of claim 9, wherein said outer discharge end of
said upper conveyor section is located adjacent a vertical
reference plane contacting one of said side wall portions of said
container when said upper conveyor section is in the retracted,
stored position.
11. A grain cart comprising: a container configured to hold a
quantity of grain, said container having front, rear and laterally
opposed side walls; a folding grain conveyor assembly having upper
and lower conveyor portions connected by a joint assembly, said
lower conveyor portion having a lower conveyor housing with first
and second ends, said upper conveyor portion having an upper
conveyor housing with first and second ends; the first end of said
lower conveyor housing having an intake proximate a bottom of said
container to receive grain and said second end of said lower
conveyor housing being disposed adjacent to a forward upper corner
of said container where said front wall intersects one of said
laterally opposed side walls; the first end of said upper conveyor
housing is disposed adjacent said second end of said lower conveyor
housing and said second end of said upper conveyor housing has a
discharge opening to discharge grain from said container; said
joint assembly includes a pivot axis about which the upper conveyor
portion is pivotable relative to said lower conveyor portion
between a grain discharge position in which said first end of the
upper conveyor portion abuts said second end of said lower conveyor
portion and in which said upper conveyor portion extends upwardly,
laterally outwardly, and forwardly relative to said forward upper
corner to permit grain to be discharged from said container and a
stored position in which said upper conveyor portion extends
downwardly from said second end of said lower conveyor portion
diagonally across said front wall of said container while remaining
substantially between said laterally opposed side walls of said
container to facilitate transporting said grain cart; and said
pivot axis being oriented oblique relative to longitudinal axes of
said upper and lower conveyor portions and oriented oblique
relative to planes perpendicular to said longitudinal axes of said
upper and lower conveyor portions.
12. The grain cart of claim 11 wherein said joint assembly
comprises a hinge including a first hinge member coupled with said
lower conveyor portion, a second hinge member coupled with said
upper conveyor portion, and a hinge pin pivotally connecting said
first hinge member to said second hinge member.
13. The grain cart of claim 11 further including a power actuator
connected to move said upper conveyor portion between said grain
discharge position and said stored position.
14. The grain cart of claim 11 further including a wheeled frame
upon which said container is mounted.
15. The grain cart of claim 11 wherein the discharge opening is
located adjacent to a vertical reference plane contacting one of
the lateral side walls when said upper conveyor portion is in the
stored position.
16. The grain cart of claim 11 wherein said upper conveyor portion
extends downwardly forward of said front wall at an angle greater
than thirty-five degrees relative to a horizontal reference plane
in the stored position.
17. The grain cart of claim 11 wherein said second end of said
lower conveyor housing is located at or behind said front wall of
said container adjacent said forward upper corner, such that
rotation of said upper conveyor portion about said pivot axis moves
said upper conveyor portion around said forward upper corner during
movement from the grain discharge position and the storage
position, thereby moving said first end of said upper conveyor
housing from one said of said forward upper corner to another side
of said forward upper corner.
18. A grain cart comprising: a wheeled frame; a container mounted
on said frame having a bottom and front, rear and laterally opposed
side walls; a lower auger assembly having an inlet located
proximate said container bottom to receive grain from said
container, said lower auger assembly extending upwardly at an
inclined angle from proximate said container bottom and terminating
near a forward upper corner formed by the intersection of said
front and one of said side walls; an upper auger assembly pivotally
connected to said lower auger assembly proximate said forward upper
corner and including a grain discharge end, said upper auger
assembly being pivotable relative to said lower auger assembly on a
pivot axis between a grain discharge position wherein said upper
auger assembly portion extends upwardly, forwardly, and laterally
outward with respect to said forward upper corner and a stored
position wherein said upper auger assembly is disposed diagonally
downwardly along said front wall of said container with said
discharge end being disposed substantially between said laterally
opposed side walls to facilitate transporting said grain cart; and
said pivot axis being oriented oblique relative to longitudinal
axes of said lower and said upper auger assemblies and oriented
oblique relative to planes perpendicular to said longitudinal axes
of said upper and lower auger assemblies.
19. The grain cart of claim 18 wherein said upper auger assembly is
disposed at an angle greater than twenty-five degrees relative to a
horizontal reference plane in the stored position.
20. The grain cart of claim 18 wherein said upper auger assembly is
disposed at an angle greater than thirty-five degrees relative to a
horizontal reference plane in the stored position.
21. The grain cart of claim 18 wherein a terminal end of said lower
auger assembly is located at or behind said front wall of said
container adjacent said forward upper corner, such that rotation of
said upper auger assembly portion about said pivot axis moves said
upper auger assembly portion around said forward upper corner
during movement from the grain discharge position and the storage
position, thereby moving said first end of said upper auger housing
from one said of said forward upper corner to another side of said
forward upper corner.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a continuation of application Ser. No.
13/200,694, filed Sep. 28, 2011 (pending), which was a continuation
of application Ser. No. 12/074,956, filed Mar. 7, 2008 (now U.S.
Pat. No. 8,047,757), the disclosures of which are incorporated
herein by reference in their entireties.
BACKGROUND
[0002] The present invention relates to a grain wagon or cart of
the type disclosed in U.S. Pat. No. 5,340,265, U.S. Pat. No.
6,296,435 and U.S. Pat. No. 7,134,830 which issued to the assignee
of the present invention and which are commonly pulled by a tow
tractor for transporting grain from a harvesting combine in a field
to an open top semi-trailer which transports the grain over the
road to a grain elevator for storage. In such a grain cart, the
power driven single auger grain unloading conveyor includes an
inclined lower auger conveyor section which extends adjacent an
inclined front left corner portion of the container and an upper
auger conveyor section which projects upwardly, laterally outwardly
and forwardly from the container in a grain discharge position so
that the discharging of the grain can be conveniently viewed by the
operator or driver of the tow tractor. The upper auger conveyor
section is pivoted by a fluid cylinder to a stored position
adjacent the front wall of the container, as shown in the
above-mentioned '281 Patent and also in U.S. Pat. No. 5,655,872.
This front folding upper auger conveyor section also enables the
driver of the tow tractor to view all movements of the upper
conveyor section between its stored position and its grain
discharge position.
[0003] It has been found desirable to construct a grain cart with a
single discharge auger conveyor and a bin or container having a
larger grain capacity, for example, a capacity of over thirteen
hundred bushels. It is also desirable to have the larger capacity
container without using a dual auger system, such as disclosed in
U.S. Pat. No. 4,846,621 and U.S. Pat. No. 6,776,569 and used in a
grain cart manufactured and sold under the trademark "Brent". The
dual auger system involves significantly more construction,
assembly and manufacturing costs and significantly more maintenance
costs. Above-mentioned U.S. Pat. No. 7,134,830 discloses a larger
capacity grain cart with a single discharge auger conveyor and
wherein the grain container has the optimum width of approximately
twelve feet so that the grain cart may be transported or delivered
over the road on the bed of a truck or trailer without requiring an
escort permit.
[0004] It is further desirable for the upper section of the single
auger conveyor to project upwardly, laterally outwardly and
forwardly of the container in the grain discharge position by an
extended distance for the reasons mentioned above and in order for
the grain cart to unload into a semi-trailer which may be
positioned further away from the grain cart, for example, on a road
bed or on the other side of a ditch or fence. One method of
extending the upper portion of the auger conveyor is to provide the
tubular auger housing with a telescopic outer housing extension
operated by a fluid cylinder, for example, as disclosed in U.S.
Pat. No. 6,497,546 which issued to the assignee of the present
invention. However, such a housing extension adds to the cost of
manufacturing and maintenance of the auger conveyor, and it is
desirable to avoid the loss of grain from between the telescopic
housing sections.
SUMMARY OF THE INVENTION
[0005] The present invention is directed to a grain wagon or cart
of the type disclosed in the above-mentioned patents issued to the
assignee of the present invention and which provides all of the
desirable features and advantages mentioned above. In accordance
with the illustrated embodiment of the invention, a grain cart
includes an open top container having inclined bottom walls and
secured to a frame supported by a set of wheels, and with the frame
having a front hitch adapted to be pivotally connected to a tow
tractor. An elongated single auger conveyor includes an inclined
lower conveyor section mounted on the container adjacent an
inclined front bottom wall of the container and an extended upper
auger conveyor section. Each of the conveyor sections includes a
power driven auger having a helical flight and rotatable on an axis
within a tubular housing.
[0006] The extended upper auger conveyor section has a grain
discharge outlet portion and is supported by a hinge assembly
adjacent a front corner portion of the container. The hinge
assembly provides for pivoting the upper conveyor section on an
axis extending offset and askewed at an acute angle relative to the
axis of the auger in each conveyor section. The hinge assembly
enables the extended upper conveyor section to pivot between a
grain discharge position projecting upwardly, laterally outwardly
and forwardly from the container and a retracted stored position
projecting downwardly from the hinge assembly in front of the front
wall of the container at a substantial angle relative to a
horizontal plane. In the stored position, the discharge outlet
portion of the upper conveyor section does not project beyond a
vertical plane extending adjacent the right side wall of the
container and is preferably located below the top surfaces of the
wheels supporting the cart.
[0007] Other features and advantages of the invention will be
apparent from the following description, the accompanying drawings
and the appended claims.
BRIEF DESCRIPTION OF THE DRAWINGS
[0008] FIG. 1 is a perspective view of a grain cart constructed in
accordance with the invention and showing the extended upper auger
conveyor section in its stored position;
[0009] FIG. 2 is a top plan view of the grain cart shown in FIG.
1;
[0010] FIG. 3 is a front end view of the grain cart shown in FIGS.
1 and 2;
[0011] FIG. 4 is a front end view similar to FIG. 3 and showing the
upper auger conveyor section in its grain discharge position
relative to a grain receiving semi-trailer;
[0012] FIG. 5 is a fragmentary plan view of the front portion of
the grain cart shown in FIG. 4;
[0013] FIG. 6 is a fragmentary perspective view of the upper auger
conveyor section in its grain discharge position;
[0014] FIG. 7 is a fragmentary perspective view similar to FIG. 6
and showing the hinge assembly or structure in the position with
the upper auger conveyor section in its stored position; and
[0015] FIG. 8 is a fragmentary plan view of the grain cart shown in
FIGS. 4 and 5 and its position relative to a tow tractor and grain
receiving semi-trailer.
DETAILED DESCRIPTION OF THE ILLUSTRATIVE EMBODIMENTS
[0016] FIG. 1 illustrates a grain wagon or cart 20 which has a
general construction similar to the grain cart disclosed in
above-mentioned U.S. Pat. No. 7,134,830, the disclosure of which is
herein incorporated by reference. The grain cart 20 has a
fabricated steel frame 22 formed by longitudinally extending
tubular steel frame members 24 rigidly connected by cross tubular
steel frame members and which converge at the front of the cart to
form a tongue 26 having a hitch 32. The hitch is pivotally
connected to a tow vehicle such as the farm tractor 35 shown in
FIG. 8. A fabricated sheet metal grain hopper or container 40
includes an inclined front wall 42 and an inclined rear wall 44
which are rigidly connected by inclined opposite side walls 46.
[0017] Vertical top extension panels or walls 47, 48 and 49 project
upwardly from the inclined side, front and rear walls and form a
rectangular top opening for a grain receiving chamber 50 defined by
the container 40. A set of opposing fabricated sheet metal wheel
well covers 52 project inwardly from the side walls 46, and
generally triangular or trapezoid-shaped grain diverter walls 56
connect the wheel well covers 52 to the side walls 46 and the rear
wall 44. The rectangular container 40 is constructed similar to the
rectangular container disclosed in above-mentioned U.S. Pat. No.
7,134,830.
[0018] As shown in FIGS. 3 and 4, an axle 62 is rigidly secured to
the frame 22 and receives a set of extra wide rubber tire wheels 65
which project into the wheel wells define by the covers 52.
Preferably, the container 40 has an overall width defined by the
vertical side panels or walls 47 and 48 slightly under twelve feet
or about 142 inches. As shown in FIG. 4, the wheels 65 project
somewhat outwardly from corresponding vertical planes 67 defined by
or adjacent the vertical side walls 47 and 48. However, when it is
desired to ship or transport the grain cart 20 over the road on the
bed of a trailer or truck, the wheels 65 may be removed so that the
overall width of the grain cart 20 does not exceed twelve feet.
[0019] The grain cart 20 includes an inclined single auger-type
grain unloading or discharge conveyor 70 which includes a lower
conveyor section 72 formed by a tubular or cylindrical sheet metal
housing 74 and enclosing an auger 76 having a helical flight 77
welded to a shaft 78. The lower end portion of the auger 76
projects from the housing 74 into a sump 81 which receives grain
from the chamber 50 and forms an inlet for the conveyor 70. As
shown in FIG. 2, the inclined lower section 72 of the conveyor 70
extends along or adjacent an inclined front left corner portion of
the container 40. The auger conveyor 70 also includes an upper
auger conveyor section 82 also formed by a tubular or cylindrical
sheet metal housing 84 enclosing an auger 86 formed by a helical
flight 87 welded to a shaft 88. The housing 84 has an outer end
portion with a grain discharge outlet formed by a discharge spout
93 secured to the housing 84 and supporting a pivotal grain
discharge spout 95 controlled from the tow vehicle, as disclosed in
U.S. Pat. No. 6,296,435, the disclosure of which is herein
incorporated by reference.
[0020] In accordance with the present invention, the lower conveyor
section 72 and the upper conveyor section 82 are pivotally
connected by a hinge structure or assembly 100 (FIG. 7) which
includes a trapezoid-shaped hinge plate 102 welded at an obtuse
angle to an end plate 104 secured to the end of the housing 74 and
perpendicular to the axis A1 of the rotatable auger 76. The hinge
assembly 100 also includes a second trapezoid-shaped hinge plate
106 which is welded at an obtuse angle to an end plate 108 welded
to the end of the housing 84 and perpendicular or normal to the
axis A2 of the auger 86 within the housing 84. The hinge plates 102
and 106 are pivotally connected by a hinge pin 110 which has a
pivot axis A3 offset and askewed at an acute angle relative to
reference planes perpendicular to each of the axes A1 and A2 or
extending at an acute angle of about fourteen degrees relative to
each of the end plates 104 and 108.
[0021] The hinge assembly 100 provides for pivoting the upper
conveyor section 82 between a grain discharge position (FIGS. 4, 5,
6 and 8) where the upper conveyor section 82 projects upwardly,
forwardly and laterally outwardly from the container 40 and a
stored position (FIGS. 1, 2, 3 and 7) where the upper conveyor
section 82 extends downwardly from the hinge assembly at a
substantial angle A (FIG. 3) from a horizontal plane P. The angle A
is greater than 25 degrees, and preferably at least 35 degrees. The
upper conveyor section 82 is moved between the grain discharge
position and the stored position by a fluid or hydraulic cylinder
115 (FIGS. 3 and 4) pivotally connected to a bracket 116 secured to
the frame 22 and having a piston rod 118 pivotally connected to the
housing 84 of the upper conveyor section 82. The operation or
actuation of the cylinder 115 is controlled by the driver of the
tow tractor 35, as described in above-mentioned U.S. Pat. No.
5,340,265.
[0022] As shown in FIGS. 4 and 8, when the upper conveyor section
82 of the grain unloading conveyor 70 is in the grain discharge
position, the extended upper conveyor section 82 is able to
discharge grain into a semi-trailer 120 which may be located on a
road bed 122 and spaced a substantial distance from the grain cart
20. Sometimes the road bed 122 is elevated from the ground G of a
field and may be on the opposite side of a ditch 124 (FIG. 4) or a
fence 128 (FIG. 8). As shown in FIGS. 3 & 4, when the upper
conveyor section 82 is in its downwardly extending stored position,
the housing 84 seats on a cradle or support 130 which is connected
to the frame 22 by a bracket 132. In the stored position, the
outlet of the discharge spout 93 is located below the top surfaces
of the wheels 65 and does not extend horizontally beyond the
vertical plane 67 contacting the right side wall 47 of the
container 40.
[0023] The pivotal discharge spout 95 may be removed from the
housing 84 when the wheels are removed from the axle 62 for
shipping or transporting the grain cart 20 on the bed of a trailer
or truck. As shown in FIG. 2, when the upper conveyor section 82 is
in its stored position, the section 82 extends slightly rearwardly
under the front vertical wall 49 and the upper portion of the
inclined front wall 42. When the upper conveyor section 82 is
pivoted by the cylinder 115 to its grain discharge position (FIGS.
5 & 6), the hinge assembly 100 provides for the axis A2 to be
substantially aligned with the axis A1 so that shaft coupling
components 135 (FIG. 7) connect the shaft 88 of the auger 86 to the
shaft 78 of the auger 76. Thus the gear box (not shown) under the
sump 81 and driven by a hydraulic motor or power take off for
rotating the shaft 78 also rotates the shaft 88 of the auger 86 in
the upper conveyor section 82.
[0024] From the drawings and the above description, it is apparent
that a grain wagon or cart constructed in accordance with the
present invention, provides desirable features and advantages to
the user of the grain cart. For example, by constructing the hinge
assembly 100 as described above, the upper auger conveyor section
82 may be extended axially by over two feet, and this extension
provides a significant and desirable increase in the length of the
upper conveyor section in order to accommodate a higher
semi-trailer 120 and/or a semi-trailer required to be spaced
further from the grain cart. The hinge assembly 100 further
provides the desirable feature of locating the upper conveyor
section 82 in a stored position extending downwardly at a
substantial angle, as shown in FIG. 3, whereby the outer end of the
cylindrical housing 84 of the upper conveyor section does not
project laterally outwardly beyond the vertical plane 67 defined by
the right side wall 47. In addition, the hinge assembly 100
maintains the upper conveyor section 82 in front of the container
40 at all times during pivoting of the conveyor section between its
stored position and its grain discharge position. This permits the
driver of the tow tractor to observe all movements of the upper
conveyor section 82 and insures that it does not interfere during
folding with telephone lines or other obstacles close to the grain
cart.
[0025] While the form of grain cart herein described constitutes a
preferred embodiment of the invention, it is to be understood that
the invention is not limited to this precise form of grain cart,
and that changes made therein without departing from the scope and
spirit of the invention as defined in the appended claims.
* * * * *