Patent Publication Number: US-2022210964-A1

Title: Agricultural implements and means for engaging the same to a tractor

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     The present application is a division of U.S. nonprovisional application Ser. No. 16/273,958, filed Feb. 12, 2019, which claimed the benefit of U.S. provisional application No. 62/629,716, filed Feb. 13, 2018, each of which are incorporated herein by reference in their entirety. 
    
    
     FIELD OF THE INVENTION 
     The present invention concerns a tractor mounting assembly and an agricultural implement carrying tool for carrying and holding implements. In some aspects, the carrying tool features hydraulic cylinders and hydraulic charged accumulators which lift and suspend implements behind a subsoil tool (or other attachment in operation). The improved carrying tool can attach to the toolbar of an improved tractor mounting assembly. The carrying tool reduces the amount of stress on a toolbar and implement(s) attached thereto by distributing weight to the tractor. Advantageously, the carrying tool also provides for better precision and control of both a tool in operation and an implement engaged with the carrying tool. 
     In some aspects, the tractor mounting assembly features a hydraulic cylinder on each side of the assembly for controlling the height of the toolbar portion thereof and therefor any implement which is engaged with the toolbar. The mounting assembly is particularly adapted for simultaneously engaging a subsoil tool and a carrying tool, the heights of which can be controlled by the toolbar cylinders. 
     BACKGROUND OF THE INVENTION 
     In preparing land and soil for cultivation, multiple types of tools and tractor implements may be used in order to achieve one&#39;s desired results. For example, a tractor may be equipped with both surface and subsurface tools, allowing a user to prepare and condition surface soil and subsoil in a single pass. Conventionally, in order to accommodate more than one tool or attachment, a user may utilize both front and rear toolbars of a tractor. Alternatively, or in conjunction with this method, a user may connect multiple tools and/or attachments in series on the rear toolbar of the tractor. 
     In the latter example above, potential issues and limitations may exist. For example, particularly heavy implements and tools, which are indirectly attached to a toolbar by another implement, can cause stress and strain both on the toolbar and on the tool to which it is connected. As a result, damage could occur to components of the tools, toolbar, and tractor. Additionally, the stress of an indirectly connected tool or implement may affect the performance of the tool that is directly connected to the toolbar. Furthermore, a user may find that the directly connected tool is more difficult to control, thus making it harder to fine tune one&#39;s desired results. 
     Another limitation a user may encounter when implements are connected in series is the inability to independently control each implement. If multiple implements are connected to a single toolbar (directly or indirectly), the positions of each implement are not independently controlled relative to the tractor (and thus soil)—that is, when the position of one implement is changed by the drive cylinders of the mounting assembly, the positions of any other attached implements are changed as well. 
     It is therefore desirable for a tool, to which additional implements can be attached, that allows a user to independently control attached implements while reducing the amount of strain on other implements attached to a toolbar. The present invention is particularly well suited when one of the implements is a subsoil tool, such as those illustrated in  FIGS. 15A-C  herein, or are disclosed in U.S. Pat. No. 8,626,401 (the &#39;401 Patent), U.S. Provisional Patent Application No. 62/458,444 (“the &#39;444 application”), or U.S. patent application Ser. No. 15/893,486 (the &#39;486 Application), each to the same inventor as the present invention, and each of which are incorporated herein by reference in their entireties. The invention is also well suited for engagement of one or more additional tools or implements, such as rollers as illustrated in  FIG. 1  of the &#39; 401  patent, to the toolbar via a carrying tool. 
     As shown in  FIG. 1  of the &#39; 401  patent, two shanks may be mounted to a frame of a toolbar, which can be towed by a tractor. Improved subsoil tools which may be suitable for use in the present invention are described in the &#39; 444  Application and the &#39; 486  Application. As shown in  FIGS. 2 and 3  of the &#39; 486  application, an improved subsoil tool may engage a toolbar frame with two hydraulic cylinders. 
     BRIEF SUMMARY OF THE INVENTION 
     The present invention concerns a tool for carrying implements which can be engaged to the toolbar of a tractor, that of which may have an implement equipped for use. Embodiments of the carrying tool may include an assembly frame, one or more side links, one or more hydraulic cylinders, a top frame, a top link, and a linkage frame. The carrying tool can also be engaged to a toolbar of an improved tractor mounting assembly, disclosed herein. 
     In some embodiments, an assembly frame of the carrying tool can be mounted on and secured to a toolbar, which may further be equipped with a tool such as, but not limited to, a soil ripping tool. In certain embodiments, an assembly frame may have one or more joints to which a top frame, one or more side links, and one or more support extensions may be pivotally engaged. To prevent against frictional wear and damage, one or more guards may be provided at, or adjacent to, a joint. In some embodiments, one or more slots may be provided on an upper lateral edge of an assembly frame to allow for the connection and pivotal movement of a hydraulic cylinder or support rod between a lower portion of an assembly frame and a top frame. The size of a slot may be made in accordance with the desired or maximal pivotal range of a cylinder rod or support rod. 
     In certain embodiments of the present invention, a side link may have three attachment points for pivotally engaging an assembly frame, hydraulic cylinder, and linkage frame at proximal, medial, and distal portions, respectively (with respect to a toolbar). A side link may be inwardly bent from near a medial portion to near a distal portion thereof. In some embodiments, a side link may have an additional attachment point for pivotally engaging an additional hydraulic cylinder or support rod. 
     In some embodiments of the present invention, a carrying tool can include one or more hydraulic cylinders. In preferred embodiments, a carrying tool may include a forward set of lift cylinders (i.e., the cylinders closest to a toolbar) and a rear set of suspension cylinders. A lift cylinder may adjust the position of a linkage frame, relative to an assembly frame and toolbar, by the extension and retraction of the lift cylinder rod. A suspension cylinder may be used to maintain the relative positions of a top frame and side link(s). Furthermore, a suspension cylinder may reduce stress on a linkage frame and absorb shock from an attached implement. In a preferred embodiment, one or more suspension cylinders may operate with a hydraulic accumulator. In an alternative embodiment, a support rod (i.e., a solid arm without hydraulic elements) may be substituted for a suspension cylinder. 
     In other embodiments, a carrying tool may include one or more support extensions, which may be pivotally attached to a joint of an assembly frame. A support extension may also be pivotally engaged with a hydraulic cylinder. For example, and without limitation, a carrying tool may have a pair of support extensions which, at one end, are pivotally attached to joints on each side of an assembly frame. At the other end, the pair of support extensions may each be pivotally engaged with a corresponding hydraulic cylinder, each of which may have a cylinder rod pivotally engaged with a side link. It is to be appreciated, however, that a carrying tool can include any number and combination of hydraulic cylinders, support rods, and support extensions. 
     Embodiments of the present invention may include a top frame which may be pivotally engaged with an assembly frame, top link, and one or more hydraulic cylinders. In certain embodiments, hydraulic cylinders may engage a side of a top frame at distal and medial portions thereof. A top frame may also be engaged with an assembly frame at a proximal portion thereof. A top link may engage a top frame near a medial portion of a distal edge thereof. 
     In some embodiments, a top link may be straight and may connect a top frame to a linkage frame at a medial portion thereof. In certain other embodiments, a top link may be integrally formed with a top frame, allowing for a direct connection between a top frame and linkage frame. 
     The position of a carrying tool may be controlled by one or more hydraulic cylinders associated therewith and by one or more hydraulic cylinders of a toolbar. In some embodiments, the height of a carrying tool can be adjusted by one or more toolbar cylinders, relative to the ground. The position of a linkage frame, relative to an assembly frame (and thus a toolbar) can be adjusted by one or more lift cylinders associated with the carrying tool. 
     In accordance with some embodiments of the present invention, a carrying tool may engage an agricultural implement to a tractor. An assembly frame of the carrying tool may be adapted to engage the toolbar of a tractor. A carrying tool may include one or more side links on a lateral side of the carrying tool, where an end of a side link may be pivotally engaged with the assembly frame. In certain embodiments, a carrying tool may also include a top frame pivotally engaged with the assembly frame and a top link engaged with the top frame. In some embodiments, a top link may be integrally formed with the top frame. A linkage frame, which may be adapted to engage an agricultural implement, may be pivotally engaged with the top frame and with a side link. One or more hydraulic lift cylinders may be engaged with the assembly frame and with the top frame. 
     In a preferred embodiment, a carrying tool may have a pair of hydraulic lift cylinders, each of which may be on a lateral side of the carrying tool with a first end engaged with an assembly frame and a second end engaged with a top frame. The carrying tool may further comprise one or more hydraulic suspension cylinders. In preferred embodiments, the carrying tool may include a pair of hydraulic suspension cylinders having a first end engaged with the top frame and a second end engaged with a side link. 
     In some embodiments of the present invention, a carrying tool may include one or more support rods having a first end, which may be engaged with a top frame, and a second end, which may be engaged with a side link. The carrying tool may further include one or more support extensions which, at a first end, may be engaged to an assembly frame of the carrying tool and which, at a second end, may be engaged with a first end of a hydraulic extension cylinder. At a second end, a hydraulic extension cylinder may be engaged with a side link. In certain embodiments, the carrying tool may include a first support extension and a second support extension which may be unitarily formed. 
     In certain embodiments, the assembly frame of a carrying tool may include at least one support bracket which may have a shape adapted for engaging with a complementary bracket of a toolbar of a tractor. The linkage frame of a carrying tool may also include at least one bracket having a shape adapted for engaging an agricultural implement. The toolbar of a tractor may also have a shape which may be adapted for engaging an agricultural implement. 
     In preferred embodiments, a carrying tool may be engaged with an improved tractor mounting assembly. A mounting assembly may include a toolbar, one or more hydraulic toolbar cylinders, and a mounting portion. The toolbar may have attachment points on upper and lower portions thereof to which upper and lower arms of the mounting assembly may be engaged. In a preferred embodiment, a toolbar may be equipped with a ripper assembly (e.g., the ripper assembly disclosed in the &#39; 401  Patent or &#39; 486  Application, or the ripper assembly shown, for example, in  FIGS. 15A-C  and  16 A-C) by engaging a top portion of thereof (i.e., the shank) through a central opening in the toolbar. In a preferred embodiment, a set of toolbar cylinders may engage upper and lower arms on each side of a mounting assembly. In some embodiments, upper and lower arms on each side of a tractor mounting assembly may form a shape that is, generally, that of a parallelogram. A mounting portion of a mounting assembly may be engaged and secured to a tractor. 
     In preferred embodiments of the present invention, an improved mounting assembly for a tractor may include a toolbar at a distal end with an opening therein adapted to receive and secure a portion of a subsoil agricultural implement. The mounting assembly may further include a tractor mounting portion at a proximal end for engaging the rear of a tractor. At a lateral top side of the mounting assembly, one or more upper arms may be pivotally engaged at a proximal end with the mounting portion and at a distal end with the toolbar. At a lateral bottom side, one or more lower arms may be pivotally engaged at a proximal end with the mounting portion and at a distal end with the toolbar. One or more hydraulic cylinders may be engaged on a first end to an upper arm and on a second end to a lower arm of the mounting assembly. In certain embodiments, the toolbar, mounting portion, upper arms, and lower arms may be configured to have a general parallelogram shape. 
     In some embodiments, the toolbar of a mounting assembly may have one or more mounting brackets on a lateral side, which may have an upwardly protruding edge on a lower side of the mounting bracket. In certain other embodiments, a first end of a hydraulic cylinder may be engaged at a proximal end of a lower arm of a mounting assembly and a second end of a hydraulic cylinder may be engaged at a distal end of an upper arm. 
     As seen in  FIG. 2  of the &#39; 486  Application, the position of a ripper assembly can be adjusted by two hydraulic cylinders associated with the toolbar. Similarly, the position of the toolbar of the improved mounting assembly, and thus the carrying tool, can be adjusted by one or more toolbar cylinders. The toolbar cylinders of the improved mounting assembly can raise the toolbar, to a height greater than would be allowed by the mounting assembly as shown in the &#39; 486  Application, by extending the toolbar cylinder rod. The toolbar of the improved mounting assembly can be lowered by retracting the toolbar cylinder rod. 
     In accordance with some embodiments of the present invention, a system for ameliorating soil is provided which may include: a tractor; a first agricultural implement, which may comprise a subsoil tool; a second agricultural implement; a mounting assembly which may be engaged to a rear side of the tractor, wherein the mounting assembly may comprise a toolbar which may have an opening therein which may be adapted to receive and secure a portion of the subsoil tool; and a carrying tool which may be engaged to the toolbar of the mounting assembly, wherein the carrying tool may comprise a linkage frame which may have at least one bracket which may have a shape adapted for engaging the second agricultural implement. 
     In certain embodiments, a mounting assembly may have (i) a mounting portion for engaging to a tractor, (ii) an upper arm which may pivotally engaged with the mounting portion and the toolbar, (iii) a lower arm which may be pivotally engaged with the mounting portion and the toolbar, and (iv) a hydraulic cylinder which may be engaged with the upper arm and a proximal end of the lower arm. In some embodiments, the carrying tool may include (i) an assembly frame for engaging to a toolbar, (ii) a top frame which may be pivotally engaged with the assembly frame and engaged with the linkage frame, (iii) a side link which may be pivotally engaged with the assembly frame and pivotally engaged with the linkage frame, and (iv) a hydraulic lift cylinder which may be engaged with the assembly frame and the top frame. In some implementations, a hydraulic suspension cylinder may be engaged with the assembly frame and the top frame. In other implementations, (i) a support extension may be engaged with the assembly frame, (ii) a support rod may be engaged with the top frame and the side link, and (iii) a hydraulic extension cylinder may be engaged with the side link and the support extension. In some embodiments, the subsoil tool of the soil amelioration system may include (i) a shank, (ii) a wing rod which may be pivotally engaged with the shank, (iii) a hydraulic cylinder which may be engaged with the toolbar, and (iv) a power link which may be engaged with the toolbar, hydraulic cylinder, and wing rod. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a perspective view illustrating an exemplary carrying tool engaged with an exemplary mounting assembly, each of which are in accordance with some embodiments of the present invention. 
         FIG. 2  is a side view of a carrying tool in accordance with some embodiments of the present invention. 
         FIG. 3  is a rear perspective view of an exemplary assembly frame of a carrying tool in accordance with some embodiments of the present invention. 
         FIG. 4  is a front perspective view of the assembly frame illustrated in  FIG. 3 . 
         FIG. 5  is a side view of an exemplary side link of a carrying tool in accordance with some embodiments of the present invention. 
         FIG. 6  is a top view of the side link illustrated in  FIG. 5 . 
         FIG. 7  is a perspective view of an exemplary top frame of a carrying tool in accordance with some embodiments of the present invention. 
         FIG. 8  is a side view of the top frame illustrated in  FIG. 7 . 
         FIG. 9  is a perspective view of an exemplary linkage frame of a carrying tool in accordance with some embodiments of the present invention. 
         FIG. 10  is a side view of the linkage frame illustrated in  FIG. 9 . 
         FIG. 11  is a partially exploded perspective view diagram illustrating an exemplary improved mounting assembly in accordance with some embodiments of the present invention, with the hydraulic cylinders not illustrated. 
         FIG. 12  is a perspective view diagram illustrating the improved mounting assembly of  FIG. 11 , with the hydraulic cylinders not illustrated. 
         FIG. 13  is a perspective view diagram illustrating an exemplary improved mounting assembly in accordance with some embodiments of the present invention, with the hydraulic cylinders illustrated and also illustrating a ripper assembly inserted into the toolbar. 
         FIG. 14  is a side view of the mounting assembly illustrated in  FIG. 13 . 
         FIGS. 15A through 15C  are side view diagrams illustrating how the toolbar cylinders and hydraulic cylinders orient, relative to the ground, a carrying tool in accordance with some embodiments of the invention. 
         FIGS. 16A through 16C  are side view diagrams illustrating how the toolbar cylinders and hydraulic cylinders orient, relative to the ground, a carrying tool in accordance with some embodiments of the invention. 
         FIG. 17  is a side view diagram of a carrying tool in accordance with some embodiments of the present invention. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     The invention, in its various aspects, will be explained in greater detail below. While the invention will be described in conjunction with several exemplary embodiments, the exemplary embodiments themselves do not limit the scope of the invention. Similarly, the exemplary illustrations in the accompanying drawings, where like elements have like numerals, do not limit the scope of the exemplary embodiments and/or invention, including any length, angles or other measurements provided. Rather the invention, as defined by the claims, may cover alternatives, modifications, and/or equivalents of the exemplary embodiments. 
     Improved Carrying Tool 
     Referring to the exemplary illustrations of  FIGS. 1 and 2 , a carrying tool  100  can include an assembly frame  130 , one or more side links  140 , top frame  170 , top link  180 , and linkage frame  190 . In some embodiments, carrying tool  100  can be mounted on and attached to a toolbar of a conventional or improved mounting assembly (see, e.g.,  FIGS. 15A-C  and  16 A-C). An improved mounting assembly is discussed more fully herein. 
     As best viewed in  FIGS. 3 and 4 , assembly frame  130  may have one or more upper joints  132  at which top frame  170  may be pivotally engaged. Additionally, one or more lower joints  134  may be located at a lower proximal corner of assembly frame  130 , to which one or more side links  140  may be pivotally engaged. In certain embodiments, guard  135  may be provided on a portion of assembly frame  130  near, or adjacent to, a lower joint  134 . Guard  135  may shaped in accordance with the pivotal range of side link  140 , so that as side link  140  moves through its range of positions during operation, frictional damage is minimized on assembly frame  130  and side link  140 . 
     In some embodiments, assembly frame  130  may include a pair of support brackets  136  which may engage the toolbar of a tractor. In preferred embodiments, support brackets  136  may engage a complementary pair of mounting brackets  218  on toolbar  205  of mounting assembly  200  (as shown in  FIG. 11 ). Mounting brackets  218  of toolbar  205  may include upwardly protruding edges located near the lower side edges thereof for retaining lower protrusions of support brackets  136  of assembly frame  130 . In some embodiments, assembly frame  130  may be secured to toolbar  205  by one or more bolts through holes in support brackets  136 . In some embodiments, assembly frame  130  may include attachment openings  137 , through which bolts may be inserted to secure assembly frame  130  to tractor mounting assembly  200  (or toolbar  205  thereof). 
     In certain embodiments of the present invention, assembly frame  130  may have one or more slots  138  on an upper lateral edge thereof. Slots  138  may be provided to allow a portion of a hydraulic cylinder connecting top frame  170  and assembly frame  130 . As discussed more fully below, assembly frame  130  may have cylinder recesses  139  for insertion of one or more hydraulic cylinders. Slots  138  may also allow for a range of movement by the hydraulic cylinders as it pivots during operation of a carrying tool and may be shaped in accordance with the maximal range of motion of a hydraulic cylinder. It is to be appreciated, however, that a slot  138  may be any shape and may extend along any portion of a lateral edge of assembly frame  130 . 
     As best viewed in  FIGS. 5 and 6 , side link  140  may have three attachment points  141 ,  142 , and  143  by which side link  140  may engage assembly frame  130  at joint  134 , a hydraulic cylinder rod, and linkage frame  190 , respectively, and secured by one or more bolts or conventional fasteners. In some implementations, side link  140  may be inwardly bent from a point near a medial portion thereof to a point near a distal portion thereof. 
     As seen in  FIGS. 7 and 8 , top frame  170  may have one or more attachment points  171 ,  172 ,  173 , and  174  for pivotally engaging assembly frame  130  at upper joint  132 , cylinder rod  152  of hydraulic cylinder  150 , hydraulic cylinder  160 , and top link  180 , respectively, and secured by one or more bolts or conventional fasteners. In some implementations, top frame  170  may have parallel aligned protrusions extending from a distal edge at attachment point  173 . In some embodiments the top frame and the top link are pivotally engaged, however in some other embodiments, the top frame and the top link may be fixedly engaged or integrally formed. 
     Referring now to  FIGS. 9 and 10 , linkage frame  190  may have one or more brackets for the attachment of one or more implements. In a preferred embodiment, linkage frame  190  may have a first bracket  193  at a top portion thereof and one or more second brackets  194  at a lower portion of one or more legs  192 . In some embodiments, each leg  192  of linkage frame  190  may have a bracket  194  which may abut and support a complementary portion of an attached implement. Advantageously, in some embodiments, second bracket  194  may have a shape that is similar to similar to mounting bracket  218  of toolbar  205 , including upward protrusions  196 . In such embodiments, it is to be appreciated that the carrying tool of the present invention can easily be inserted between a conventional implement and a conventional or improved mounting assembly for added functionality. 
     Referring back to the illustrations of  FIGS. 1 and 2 , in some embodiments of the present invention, carrying tool  100  may include two sets of hydraulic cylinders (see, e.g.,  FIGS. 1 and 2 ). A forward set (nearest a tractor or mounting assembly) may comprise lift cylinders  150  and a rear set may comprise suspension cylinders  160 . When implements are attached to linkage frame  190  of carrying tool  100 , suspension cylinders  160  may work to absorb shock and maintain the positions of top frame  170  and side links  140 , relative to each other. Lift cylinders  150  may work to adjust the position of top frame  170 , relative to assembly frame  130 , by extending or retracting lift cylinder rod  152 . In certain embodiments, suspension cylinders  160  may operate with one or more hydraulic accumulators. Use of hydraulic accumulators can reduce and minimize shock, providing for smoother operation of the carrying tool. Accumulators may also help with maintaining a constant pressure within the suspension cylinders, even if the power supply to a suspension cylinder were to be temporarily cut off Therefore, in certain circumstances, it may be advantageous to use hydraulic accumulators to increase performance of and reduce stress on the tool, while minimizing the risk of damage in the case of a malfunction. 
     In some embodiments of the present invention, a carrying tool may have different configurations. In some implementations, instead of a suspension cylinder, a carrying tool can include a support extension engaged with the mounting assembly, a support extension cylinder between the support extension and the side link, and a support rod between the top frame and the side link. Referring now to the illustration of  FIG. 17 , and particularly pointing out variations in some embodiments with respect to the carrying tool of the present invention described above, carrying tool  300  may include support extensions  323 , support extension cylinders  326 , top frame  370 , support rods  329 , and side links  340 . Support extensions  323  may be engaged to an assembly frame of carrying tool  300  at upper joints and lower joints (analogous to upper joints  132  and lower joints  134  of mounting assembly  130  as shown in  FIG. 3 ). In contrast to side link 140 illustrated in  FIG. 5  with medial attachment point  142  for engagement with suspension cylinder  160 , side link  340  illustrated in  FIG. 17  may have medial attachment points for engaging support extension cylinder  326  and support rod  329 . Support extension cylinder  326  can be engaged with and between support extension  323  and side link  340 . Support rod  329  can be engaged with and between top link  370  and side link  340 . It is to be appreciated that a carrying tool may include any number, type, and combination of hydraulic cylinders, support rods, and support extensions, and configurations thereof, in accordance with embodiments of the present invention. 
     Improved Toolbar Mounting Assembly 
     In preferred embodiments, and as illustrated in  FIGS. 11-14 , an improved tractor mounting assembly  200  may include a toolbar  205 , a tractor mounting portion  206 , and one or more hydraulic toolbar cylinders  203 . Mounting portion  206  may be fixedly engaged with a rear portion of a tractor. A pair of lateral upper arms  209  at a top side and a pair of lateral lower arms  208  at a bottom side may be (i) pivotally engaged on first ends with mounting portion  206  at a proximal end of mounting assembly  200  and (ii) pivotally engaged on second ends with toolbar  205  at a distal end of mounting assembly  200  (for purposes of this discussion, “proximal end” refers to the portion of the mounting assembly closest to the tractor to which the mounting assembly is engaged, “distal end” refers to the portion of the mounting assembly furthest from the tractor, “top side” refers to the portion of the mounting assembly furthest from the ground upon which the tractor sits, and “bottom side” refers to the portion of the mounting assembly closest to the ground). In some embodiments, and as illustrated in  FIG. 11 , mounting portion  206  may comprise separate subparts on lateral sides thereof. In some other embodiments, the mounting portion may be unitarily formed. Toolbar cylinders  203  may be pivotally engaged with lower arms  208  and upper arms  209  on either side of mounting assembly  200  at proximal and distal portions (with respect to a tractor) thereof, respectively. Toolbar  205  may be pivotally engaged with arms  208  and  209  at lower attachment openings  214  and upper attachment openings  216  on either side of mounting assembly  200 , and may be secured by one or more bolts or other conventional fastening means. Toolbar  205  may include a central opening  212 . In some implementations, central opening  212  can receive and engage a portion of a ripper assembly  400 . When a carrying tool as described herein is engaged with toolbar  205 , upper attachment openings  216  thereof may be aligned with toolbar attachment openings of the assembly frame (for example, and without limitation, attachment openings  137  of assembly frame  130  as illustrated in  FIG. 3 ). Advantageously, the assembly frame of an improved carrying tool and the toolbar of the improved mounting assembly may each be secured to the upper arms of the improved mounting assembly. In some embodiments, mounting assembly  200  may include mounting brackets  218  on toolbar  205  with upwardly protruding edges located near the lower side edges thereof for engaging an agricultural implement. As discussed above, mounting brackets  218  may also be well suited for retaining lower protrusions of support brackets  136  of assembly frame  130  of carrying tool  100 . 
     As illustrated in  FIGS. 15A-C  and  16 A-C, and discussed more fully below, toolbar cylinders  203  of the improved mounting assembly may controllably adjust the height and rotation of toolbar  205  and a carrying tool (for example, and without limitation, carrying tool  100  or carrying tool  300 ). In some embodiments, a first end of toolbar cylinder  203  may be engaged to lower arm  208  at a point which is proximate to the point of engagement of lower arm  208  to mounting portion  206 . In some embodiments, a second end of toolbar cylinder  203  may be engaged to upper arm  209  at a medial point thereon. In other embodiments, the second end of toolbar cylinder  203  may be engaged to upper arm  209  at a point which is distal to the point of engagement of upper arm  209  to mounting portion  206 . It is to be appreciated that the engagement points of the toolbar cylinders to the upper and lower arms, as well as the relative lengths and spacing thereof, affect the range of motion of the toolbar relative to the point of attachment of the mounting portion to the tractor. In some embodiments, and as illustrated in  FIG. 14 , the upper arms and/or lower arms may have ridges or protrusions at the point of attachment of the toolbar cylinders. 
     Operation of a First Embodiment of a Carrying Tool 
     Operation of an improved carrying tool as illustrated in  FIG. 2  mounted to an improved tractor mounting assembly is illustrated in  FIGS. 15A-C . Carrying tool  100 , having lift cylinders  150  and suspension cylinders  160  is engaged with mounting assembly  200  having toolbar cylinders  203 . Ripper assembly  400  is engaged with the toolbar of mounting assembly  200 . As illustrated in  FIG. 15A , carrying tool  100  is in a lowered position and ripper assembly  400  is in a non-engaged position (i.e., not engaged with the soil). Toolbar cylinders  203  are in an extended position and lift cylinders  150  are in a retracted position. In this state, the lowermost point of ripper assembly  400  is above a reference level (e.g., ground surface) by distance B 1 . The legs of the linkage frame are oriented at angle α 1  and the protrusions of the second (lower) brackets are at distance A 1 , relative to the reference level. 
     As illustrated in  FIG. 15B , the carrying tool is in a partially raised position and the ripper assembly is in an engaged position (i.e., engaged in the soil). The toolbar cylinders are in a retracted position and the lift cylinders are in a partially extended position. In this state, the lowermost point of the ripper assembly is below the reference level by distance B 2 . The legs of linkage frame are oriented at angle α 2  and the protrusions of the second brackets are at distance A 2 , relative to the reference level. In comparison to  FIG. 15A , the linkage frame is at about the same height above the reference level (i.e., distance A 2  is approximately equal to the distance A 1 ), even though the toolbar and assembly frame have been lowered into the engaged position (e.g., distance B 1  is above the reference level whereas distance B 2  is below the reference level). 
     As illustrated in  FIG. 15C , the carrying tool is in a maximally raised position and the ripper assembly is in an engaged position. The toolbar cylinders are in a retracted position and the lift cylinders are in a maximally extended position. In this state, the lowermost point of the ripper assembly is below the reference level by distance B 3 . The legs of linkage frame are oriented at angle α 3  and with the protrusions of the second brackets at distance A 3 , relative to the reference level. In comparison to  FIG. 15B , the linkage frame is higher above the reference level (i.e., distance A 3  is greater than the distance A 2 ), even though the toolbar and assembly frame remain in the engaged position (e.g., distance B 3  is approximately equal to distance B 2 ). Furthermore, it is to be appreciated that angle α 2  and angle α 3  are about the same, i.e., while the linkage frame is raised ( FIG. 15C  relative to  FIG. 15B ), the linkage frame maintains a near constant orientation relative to the reference level. 
     Operation of a Second Embodiment of a Carrying Tool 
     Operation of an improved carrying tool as illustrated in  FIG. 17  mounted to an improved tractor mounting assembly is illustrated in  FIGS. 16A-16C . Carrying tool  300 , having lift cylinders  350 , support extensions  323 , support extension cylinders  326 , top frame  370 , and side links  340  is engaged with mounting assembly  200  having toolbar cylinders  203 . Ripper assembly  400  is engaged with the toolbar of mounting assembly  200 . As illustrated in  FIG. 16A , carrying tool  300  is in a lowered position and ripper assembly  400  is in a non-engaged position (i.e., not engaged with the soil). Toolbar cylinders  203  are in an extended position, support extension cylinders  326  are in a maximally extended position, and lift cylinders  350  are in retracted position. In this state, the lowermost point of ripper assembly  400  is above a reference level (e.g., ground surface) by distance B 4 . The legs of the linkage frame are oriented at angle α 4  and the protrusions of the second (lower) brackets are at a distance A 4 , relative to the reference level. 
     As illustrated in  FIG. 16B , the carrying tool is in a raised position and the ripper assembly is in a non-engaged position. The toolbar cylinders are in an extended position, the support extension cylinders are in an extended position, and the lift cylinders are in an extended position. In this state, the lowermost point of the ripper assembly is above the reference level by distance B 5 . The legs of the linkage frame are oriented at angle α 5  and the protrusions of the second brackets are at a distance A 5 , relative to the reference level. In comparison to  FIG. 16A , the linkage frame is higher relative to the reference level (i.e., distance A 5  is greater than distance A 4 ), even though the angle relative to the reference level is the about the same (e.g., angle α 5  and angle α 4  are about the same) and the ripper assembly is about the same distance from the reference level (i.e., distance B 5  and distance B 4  are about the same). 
     As illustrated in  FIG. 16C , the carrying tool is in a maximally raised position and the ripper assembly is in a non-engaged position. The toolbar cylinders are in an extended position, the support extension cylinders are in a retracted position, and the lift cylinders are in a maximally extended position. In this state, the lowermost point of the ripper assembly is above the reference level by distance B 6 . The legs of the linkage frame are oriented at angle α 6  and the protrusions of the second brackets are at a distance A 6 , relative to the reference level. In comparison to  FIG. 16B , the linkage frame is higher relative to the reference level (i.e., distance A 6  is greater than distance A 5 ), even though the angle relative to the reference level is the about the same (e.g., angle α 6  and angle α 5  are about the same) and the ripper assembly is about the same distance from the reference level (i.e., distance B 6  and distance B 5  are about the same). 
     It is to be appreciated that compared with carrying tool  200  illustrated in  FIGS. 15A-15C , carrying tool  300  illustrated in  FIGS. 16A-16C  can significantly extend the height above a common reference (e.g. ground surface) thus enabling a greater range of height adjustments of an implement engaged to the carrying tool relative to the ground. 
     In some aspects, the present invention provides improvements to a tractor mounting assembly having a toolbar for engaging one or more tools to a tractor, such as the ripper assembly disclosed in the &#39; 444  Application or the &#39; 486  Application. In some aspects, the present invention provides a carrying tool for engaging one or more tools or implements, such as the rollers illustrated  FIG. 1  of the &#39; 401  Patent, to a toolbar of a tractor mounting assembly. It is to be appreciated, however, that while some embodiments of the present invention include an improved tractor mounting assembly and a carrying tool, the invention is not limited to embodiments containing both the improved tractor mounting assembly and a carrying tool. For example, a system in accordance with some embodiments of the present invention may include the improved tractor mounting assembly and no carrying tool. In other examples, a system in accordance with some embodiments of the present invention may include a carrying tool with the tractor mounting assembly as illustrated in the &#39; 401  Patent, the &#39; 444  Application or the &#39; 486  Application. 
     It is to be understood that variations, modifications, and permutations of embodiments of the present invention may be made without departing from the scope thereof. It is also to be understood that the present invention is not limited by the specific embodiments, descriptions, or illustrations or combinations of either components or steps disclosed herein. Thus, although reference has been made to the accompanying figures, it is to be appreciated that these figures are exemplary and are not meant to limit the scope of the invention.