FORM 2
THE PATENTS ACT, 1970
(39 of 1970)
&
THE PATENTS RULES, 2003
COMPLETE SPECIFICATION
(See Section 10; rule 13)
“HARVESTER LIFT SYSTEM”
CNH Industrial (India) Pvt. Ltd. of the address: B1-207, Boomerang, Chandivali Farm Road, Near Chandivali Studio, Andheri (East) Mumbai – 400 072, India; Nationality: India.
The following specification particularly describes the invention and the manner in
which it is to be performed:

HARVESTER LIFT SYSTEM
BACKGROUND
[0001] The present disclosure relates generally to a harvester raising and lowering system.
[0002] The agricultural industry uses a variety of tools and machines to harvest different kinds of crops. For example, a combine harvester is a machine that uses a thresher to harvest wheat, barley, etc. Other harvesters include drums that enable harvesting of crops such as cotton. These machines are typically self-propelled and perform a single task. In other words, a farmer may purchase a combine harvester to harvest grains, a cotton harvester to harvest cotton, a corn harvester for corn, a potato harvester for potatoes, etc. Each additional machine may therefore increase a farm’s operating costs while remaining idle for most of the year (i.e., times other than during the harvest).
BRIEF DESCRIPTION
[0003] A harvester is configured to removably couple to a tractor assembly. The harvester includes a lift system that lifts and lowers a harvesting assembly. The lift system includes a linkage system coupled to a harvester chassis and the harvesting assembly. A first actuator couples to the harvester chassis and harvesting assembly. The first actuator lifts and rotates the harvesting assembly into a transportation position as the first actuator expands, as well as lowers and rotates the harvesting assembly into a harvesting position when the first actuator contracts.
DRAWINGS
[0004] These and other features, aspects, and advantages of the present disclosure will become better understood when the following detailed description is read with reference to the accompanying drawings in which like characters represent like parts throughout the drawings, wherein:

[0005] FIG. 1 is a perspective view of a harvester system configured to harvest rows of a crop, in accordance with an embodiment of the present disclosure;
[0006] FIG. 2 is a side view of a harvester and a tractor assembly that may be coupled to one another to form the harvester system of FIG. 1, in accordance with an embodiment of the present disclosure;
[0007] FIG. 3 is a side view of a harvester system with a harvesting assembly in a harvesting position, in accordance with an embodiment of the present disclosure;
[0008] FIG. 4 is a side view of the harvester system of FIG. 3 with the harvesting assembly in a raised/transport position, in accordance with an embodiment of the present disclosure;
[0009] FIG. 5 is a perspective view of a lift system in a harvesting position, in accordance with an embodiment of the present disclosure; and
[0010] FIG. 6 is a perspective view of the lift system of FIG. 5 in a raised/transport position, in accordance with an embodiment of the present disclosure.
DETAILED DESCRIPTION
[0011] One or more specific embodiments of the present disclosure will be described below. In an effort to provide a concise description of these embodiments, all features of an actual implementation may not be described in the specification. It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions must be made to achieve the developers’ specific goals, such as compliance with system-related and business-related constraints, which may vary from one implementation to another. Moreover, it should be appreciated that such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure.

[0012] When introducing elements of various embodiments of the present disclosure, the articles “a,” “an,” “the,” and “said” are intended to mean that there are one or more of the elements. The terms “comprising,” “including,” and “having” are intended to be inclusive and mean that there may be additional elements other than the listed elements.
[0013] A harvester collects agricultural product and separates portions of the agricultural product into harvested goods (e.g., cotton) and other agricultural materials (e.g., chaff, foliage, dirt) as the harvester travels across an agricultural field. The harvested goods and the other agricultural materials are discharged into outlets, such as a harvested goods outlet and a discharge outlet. Typical self-propelled harvesters may be large and/or expensive and may only be used during the harvest. Thus, the disclosed embodiments provide a system that facilitates conversion or modification of another agricultural or work vehicle into a harvester system. For example, a tractor may be used throughout the year to carry out various farming jobs (e.g., non-harvesting jobs). As harvesting season approaches, an operator (e.g., farmer) may modify the tractor by coupling harvester components (e.g., one or more drums, a blower, a bin, a cabin) to certain tractor components (e.g., a tractor chassis supporting wheels, an engine, a transmission, a heating and air ventilation (HVAC) system) to form a harvester system (e.g., a tractor-mounted harvester or a modified tractor). After the harvest, the operator may again separate the harvester components from the tractor components, enabling the tractor to be reconstructed and used for other farming jobs.
[0014] In some embodiments, one or more harvester components (e.g., harvesting assembly) may be raised and/or rotated to increase ground clearance. This enables the harvester components to avoid contact with the ground as the harvester travels along roads, in and out of fields, over ditches, etc. Once the harvester reaches a harvesting location and is ready to harvest, the harvesting components may again be lowered and/or rotated into a harvesting position, enabling the harvester to begin harvesting crops (e.g., cotton).
[0015] In order to control the position of the harvester components, the harvester discussed below includes a lift system. The lift system includes a hydraulic system

coupled to a linkage system. The linkage system directs the force of the hydraulic system to lift and rotate the harvester components away from the ground. However, instead of coupling the lift system to the tractor components (e.g., tractor chassis), the lift system couples directly to element(s) of the harvester (e.g., to a harvester chassis). The harvester may therefore facilitate coupling and decoupling of the tractor to and from the harvester.
[0016] Turning now to the drawings, FIG. 1 is a perspective view of an embodiment of a harvester system 6. The harvester system 6 combines two main pieces of equipment, a tractor assembly 8 with a harvester 10 to harvest rows of crops in an agricultural field. To facilitate the discussion, the harvester system 6 and its components may be described with reference to a longitudinal axis or direction 12, a vertical axis or direction 14, and a lateral axis or direction 16.
[0017] As shown, the harvester 10 includes a harvesting assembly 18. The harvesting assembly 18 include multiple drum assemblies 19 (e.g., harvesting heads) and plant lifters 21. In operation, the plant lifters 21 lift the stems, branches, etc. of the plant for harvesting by the drum assemblies 19. The drum assemblies 19 harvest the cotton using one or more rotors to separate the cotton from other agricultural materials (e.g., chaff, foliage, stems, debris). It should be appreciated that although two harvesting assemblies 18 are shown in FIG. 1, the harvester 10 may have any suitable number of harvesting assemblies 18, such as 1, 2, 3, 4, 5, 6, or more harvesting assemblies 18.
[0018] The harvester 10 may include an air system that includes a blower 20 (e.g., fan) that blows air to direct the harvested goods through one or more conduits 22 to a bin 24 (e.g., basket or baler). In some embodiments, the bin 24 may move (e.g., pivot or rotate) to transfer the harvested goods from the bin 24 to another container or onto the agricultural field. In some embodiments, the other agricultural materials may be deposited onto the agricultural field beneath and/or behind the harvester 10. As discussed in more detail below, the harvester 10 includes a lift system 26 that enables the harvester 10 to raise and lower the harvesting assembly 18 between a transport position and a harvesting position. In the transport position, the harvesting assembly 18 may be raised as well as rotated to increase clearance between the harvesting assembly 18 and the

ground. This enables the harvester 10 to avoid contact between the harvesting assembly 18 and the ground as the harvester 10 travels along roads, in and out of fields, over ditches, etc. Once the harvester 10 reaches a harvesting location and is ready to harvest, the lift system 26 lowers the harvesting assembly 18 into a harvesting position, enabling the harvester 10 begin harvesting crops (e.g., cotton).
[0019] In some embodiments, the harvester 10 may include a drive system 30 (e.g., pulley system) that drives the multiple drum assemblies 19, the blower 20, and/or other components of the harvester 10. The harvester 10 may also include a cabin 32 to support or house an operator. It should be understood that the cabin 32 may be an enclosed cabin (e.g., a climate-controlled cabin), as shown, or the cabin 32 may be a platform (e.g., open or non-enclosed platform) on which the operator may sit or stand, for example. In the illustrated embodiment, the cabin 32 includes one or more operator interfaces and/or input devices 34 (e.g., switch, knob, light, display, steering wheel, gear shift lever) that enable the operator to monitor and/or control various functions of the harvester 10, such as ground speed, steering angle, transmission range and/or gear, operation of the HVAC system, operation of the drive system 30, or the like. As shown, the bin 24 and the cabin 32 are supported on a chassis 36 (e.g., harvester chassis or frame). Various other components (e.g., the drum assemblies 19, the blower 20, the one or more conduits 22, platform assembly 23, and the drive system 30) may be supported by and/or coupled to the chassis 36 to form the harvester 10. In the illustrated embodiment, the chassis 36 supports or includes a cover assembly 38 (e.g., cage assembly) that is configured to cover (e.g., surround or protect) various components, such as an engine, a transmission, the HVAC system, and a radiator, which are supported on a frame 40 (e.g., tractor frame or chassis). In operation, the harvester 10 may be driven in a direction of travel 42 through the agricultural field using forward wheels 44 and rear wheels 46.
[0020] As discussed above, the harvester system 6 includes the tractor assembly 8 and the harvester 10. As illustrated, the tractor chassis 40 couples to the forward wheels 44, the rear wheels 46, and supports various components, such as the engine, the transmission, the HVAC system, the radiator, or a combination thereof, to form the tractor assembly 8 (e.g., tractor powertrain assembly). The tractor assembly 8 may be

coupled to other tractor components (e.g., tractor hood, tractor cabin, or the like) to form a tractor (e.g., an unmodified tractor). In some embodiments, the tractor assembly 8 may include tracks in place of front wheels 44 and/or rear wheels 46.
[0021] In contrast, the drums 19, the blower 20, the one or more conduits 22, the bin 24, the drive system 30, the cabin 32, the input devices 34, the chassis 36, and the cover assembly 38 may be part of a harvester 10 (e.g., harvester kit or conversion kit) that may be coupled to the tractor assembly 8 to create or to build the harvester system 6. Thus, at certain times of the year, the operator may utilize the tractor assembly 8 as part of a tractor to carry out various agricultural operations. However, during a harvesting season, the operator may separate the tractor assembly 8 from other tractor components of the tractor, and then the operator may combine the tractor assembly 8 with the harvester 10 to build the harvester system 6 to carry out harvesting operations. At the conclusion of the harvesting season, the operator may separate the tractor assembly 8 from the harvester 10, and then reassembly the tractor components of the tractor assembly 8 to form the tractor to do other farm jobs.
[0022] FIG. 2 is a side view of the tractor assembly 8 and the harvester 10 that may be coupled to one another to form the harvester system 6. The tractor assembly 8 may include the forward wheels 44, the rear wheels 46, the frame 40, various other components supported on the frame 40, or a combination thereof. For example, the tractor assembly 8 may include powertrain components, such as an engine 70, a transmission 72, and other components that transmit power from the engine 70 to axle(s) to drive the forward wheels 44 and/or the rear wheels 46. In some embodiments, the tractor assembly 8 may include various other components, such as an HVAC system 74 (e.g., compressor and condenser) and/or a radiator 76. When the tractor assembly 8 is not coupled to the harvester 10, the tractor assembly 8 may be coupled to various other tractor components 80, such as a tractor hood, tractor cabin, tractor input devices, or the like, to form a tractor (e.g., an unmodified tractor) and to enable the tractor to travel in a forward direction of travel 84 to carry out other agricultural operations (e.g., non-harvesting operations).

[0023] As shown, the harvester 10 includes the harvester assemblies 18, the blower 20, the one or more conduits 22, the bin 24, the drive system 30, the cabin 32, the input devices 34, the chassis 36, and the cover assembly 38, among other components. The harvester 10 may be coupled to the tractor assembly 8 (e.g., via fasteners) to form the harvester system 6 which then travels in the forward direction 42 through an agricultural field. In some embodiments, the forward direction of travel 84 of the tractor is opposite the forward direction of travel 42 of the harvester 10 (i.e., the forward wheels 44 of the harvester 10 may be the rear wheels of the tractor). The harvester 10 may be coupled to the tractor assembly 8 via any of a variety of processes or steps. For example, in some embodiments, the harvester 10 is partially assembled or fully assembled (e.g., as shown), and then subsequently coupled or mounted onto the tractor assembly 8 to form the harvester system 6. In some embodiments, the components of the harvester 10 may be coupled individually and/or sequentially to the tractor assembly 8. The drive system 30 may be utilized to drive the drum assemblies 19, the blower 20, other components (e.g., the water pump) of the harvester 10, or a combination thereof.
[0024] FIGS. 3 and 4 are side views of the harvester 10 with the harvesting assembly 18 in the respective harvesting/lowered and transport/raised positions. As discussed above, the harvester 10 includes a lift system 26 that enables the harvester 10 to raise and lower the harvesting assembly 18 to facilitate harvesting as well as movement of the harvester 10. For example, after harvesting a crop field (e.g., cotton), the operator may raise the harvesting assembly 18 with the lift system 26 to provide additional ground clearance between the harvesting assembly 18 and the ground 98 (see FIG. 4). This enables the harvester 10 to move to another field, storage location, etc., while substantially reducing the possibility of contact between the harvesting assembly 18 and the ground. For example, as the harvester 10 may travel along roads, in and out of fields, over ditches, etc. Once the harvester 10 reaches a harvesting location and is ready to harvest, the lift system 26 lowers the harvesting assembly 18 into the harvesting position (see FIG. 3), enabling the harvester 10 begin harvesting crops (e.g., cotton).
[0025] In order to transition the harvesting assembly 18 between the harvesting/lowered and transport/raised positions the lift system 26 includes a hydraulic

system 100 and a linkage system 102. As will be explained below, the lift system 26 uses the linkage system 102 to direct the force of the hydraulic system 100 when lifting the harvesting assembly 18 into the transport position, as well as to control movement of the harvesting assembly 18 from the transport position to the harvesting position after removal/reduction in force by the hydraulic system 100. In some embodiments, lift system 26 may use other actuators instead of hydraulic ones. For example, the lift system may use one or more pneumatic actuators, electro-mechanical actuators, mechanical actuators (e.g., pulley), hydraulic actuators, or combinations thereof.
[0026] The hydraulic system 100 includes one or more hydraulic cylinders 104 (e.g., actuators) that couple to the harvesting assembly 18 at a first end and to a harvester chassis 36 at a second end. For example, the hydraulic system 100 may be include 1, 2, 3, 4, 5, or more hydraulic cylinders 104 that provide the force to lift and/or rotate the harvesting assembly 18 away from the ground. By coupling the hydraulic cylinders 104 to harvesting assembly 18 at a first end and to the harvester chassis 36 at a second end, the lift system 26 facilitates separation of the harvester 10 from the tractor assembly 8. More specifically, the tractor assembly 8 may separate from the harvester 10 without decoupling the hydraulic cylinders 104 from the tractor assembly 8. Similarly, the next time the harvester 10 is used, the tractor assembly 8 is able to reconnect to the harvester 10 without attachment of the hydraulic cylinders 104 to the tractor assembly 8. In this way the lift system 26 enables the harvester 10 to operate as a standalone tool that may reduce the steps and effort involved in coupling and decoupling the tractor assembly 8 from the harvester 10.
[0027] FIG. 5 is a perspective view of the lift system 26 in a harvesting position. To more clearly describe and illustrate the lift system 26, various harvester components have been removed, including the drum assemblies 19. As illustrated, the lift system 26 includes the hydraulic system 100 which includes one or more hydraulic cylinders 104. The hydraulic cylinders 104 couple to the harvester chassis 36 and to a toolbar 122 of the harvesting assembly 18. This enables the lift system 26 to lift and/or rotate as well as lower and/or rotate the harvesting assembly 18 between harvesting and transportation positions.

[0028] In some embodiments, the hydraulic cylinders 104 may couple to opposite lateral sides of the chassis 36 with mounting brackets 124. The connection between each hydraulic cylinder 104 and the respective mounting bracket 124 may be in the form of a first pivot joint 126 (e.g., first pivot joint). Each first pivot joint 126 is formed using a first pin 128 coupled to a first end 130 of the respective cylinder 104. The first pin 128 in turn couples to the bracket 124 by extending through one or more apertures 132 in the bracket 124. For example, in some embodiments the bracket 124 may define a slot 134 between opposing walls 136, 138. Each of these walls 136, 138 may include a respective aperture 132 that enables opposing ends of the first pin 128 to extend therethrough. In this way, the first ends 130 of the hydraulic cylinders 104 may couple to the chassis 36 while simultaneously enabling the hydraulic cylinders 104 to rotate in directions 140 and 142 about the first pivot joint 126.
[0029] In some embodiments, the lift system 26 includes two hydraulic cylinders 104 that couple to respective side bars 144, 146 of the chassis 36 via respective mounting brackets 124. It should be understood that instead of coupling to the side bars 144, 146, the brackets 124 may couple to a crossbeam that extends between the side bars 144, 146. In still other embodiments, the lift system 26 may include brackets 124 on the side bars 144, 146 as well as on a crossbeam between the side bars 144, 146 to enable attachment of additional hydraulic cylinders 104 (e.g., 1, 2, 3, or more hydraulic cylinders 104). In some embodiments, a crossbeam may enable the lift system 26 to operate with a single hydraulic cylinder 104 positioned at or near the center of the crossbeam (e.g., within 1, 2, 3, 4, 5, 10 percent of the crossbeam center).
[0030] In some embodiments, the brackets 124 may angle down and away from the chassis 36 in order to position the first ends 130 of the hydraulic cylinders 104 below as well as in front of the chassis 36. In this way, the brackets 124 may enable use of shorter hydraulic cylinders 104 as well as position an end of each hydraulic cylinder 104 below the toolbar 122 so that the hydraulic cylinders 104 may lift the harvesting assembly 18. It should be understood that the brackets 124 may couple to the chassis 36 through welds, threaded fasteners, or they may be integral with the chassis 36 (e.g., one-piece).

[0031] In order to move the harvesting assembly 18, the hydraulic cylinders 104 couple to a toolbar 122 with second pivot joints 150. Each second pivot joint 150 is formed with a pin 152 that couples to a second end 157 of a respsective hydraulic cylinder 104. The pins 152 couple to flanges 154, 156 on the toolbar 122. These flanges 154, 156 define respective apertures that receive the pins 152. In this way, the second ends 157 of the hydraulic cylinders 104 may couple to the toolbar 122 while simultaneously enabling the second ends 157 of the hydraulic cylinders 104 to rotate in directions 140 and 142 about the second pivot joints 150. The flanges 154, 156 may couple to the toolbar 122 with fasteners and/or welds or may be integral to the toolbar 122 (e.g., one-piece). In some embodiments, the flanges 154, 156 may be positioned between lateral ends 158, 160 of the toolbar 122 enabling the chassis 36 to be narrower than the harvesting assembly 18.
[0032] In operation, hydraulic fluid is pumped into the hydraulic cylinders 104 through one or more hydraulic lines 162. As fluid enters, the hydraulic cylinders 104 extend in directions 164 and 166 (e.g., single-acting hydraulic cylinders). The lift system 26 uses this expansion of the hydraulic cylinders 104 to lift and rotate the harvesting assembly 18 using the linkage system 102. In other words, the linkage system 102 directs the force provided by the hydraulic cylinders 104 to lift and/or rotate the harvesting assembly 18 as well as to control the lowering of the harvesting assembly 18 after removal of the hydraulic force. In some embodiments, the hydraulic cylinders 104 may be double-acting hydraulic cylinders.
[0033] In the illustrated embodiment, the linkage system 102 includes rods 168 (e.g., tie-rods) and bars 170. For example, the linkage system 102 may include two rods 168 and two bars 170 that couple the toolbar 122 of the harvesting assembly 18 to the chassis 36. While two rods 168 and two bars 170 are illustrated, some embodiments may include more or fewer rods 168 and/or bars 170 (e.g., 1, 2, 3, 4, 5, 10, or more) that couple the toolbar 122 to the chassis 36.
[0034] The rods 168 couple to the chassis 36 with third pivot joints 172 and to the toolbar 122 with fourth pivot joints 174. As illustrated, the fourth pivot joints 174 couple

to respective lateral ends 158 and 160 of the toolbar 122 to resist torsion/twisting of the harvesting assembly 18. However, in other embodiments the fourth pivot joints 174 may be positioned at different positions between the lateral ends 158 and 160 of the toolbar 122. In order to accommodate coupling of the fourth pivot joints 174 at the lateral ends 158 and 160 of the toolbar 122, the chassis 36 includes arms 176 that extend laterally outward beyond the side bars 144 and 146. This enables the chassis 36 to be narrow while still enabling the rods 168 to couple to the ends 158 and 160 of the toolbar 122.
[0035] The bars 170 similarly couple to the chassis 36 and the toolbar 122. As illustrated, the bars 170 couple to the toolbar 122 with fifth pivot joints 178. The fifth pivot joints 178 may be formed by coupling first ends 180 of the bars 170 to respective flanges 182 on the toolbar 122. However, in some embodiments, the bars 170 may be coupled in other ways including with brackets. The second end 184 of each bar couples to the chassis 36 through a central arm assembly 186. The central arm assembly 186 includes a cylindrical arm 188 that extends between the bars 170 and couples to the chassis 36 with brackets 190. As illustrated, the brackets 190 enable the cylindrical arm 188 to rotate with the bars 170 and/or enable the bars 170 to rotate about the cylindrical arm 188. Furthermore, the cylindrical arm 188 may fix the lateral distance between the bars 170 while also providing torsional resistance during operation of the lift system 26 (e.g., lifting and lowering the harvesting assembly 18). As illustrated, the brackets 190 couple to the side bars 144 and 146 of the chassis 36 to support the cylindrical arm 188. It should be understood though that the brackets 190 may couple at different points on the harvester chassis 36. As explained above, by coupling the rods 168, bars 170, and hydraulic cylinders 104 to the harvester chassis 36 and not the tractor assembly 8, the lift system 26 facilitates coupling and decoupling of the tractor assembly 8 from the harvester 10.
[0036] FIG. 6 is a perspective view of a lift system 26 in a raised/transport position. The lift system 26 raises the harvesting assembly 18 by flowing hydraulic fluid into the hydraulic cylinders 104 through one or more hydraulic lines 162. As fluid enters, the hydraulic cylinders 104 expand in direction 166 and away from the chassis 36. The lift system 26 uses the linkage system 102 to direct the force from the hydraulic cylinders

104 to lift and/or rotate the harvesting assembly 18. Specifically, as the hydraulic cylinders 104 extend, the rods 168 and bars 170 rotate in direction 140 about the pivot joints 126, 150, 172, 174, and 178. The rotation about the pivot joints 126, 150, 172, 174, and 178 lifts the harvesting assembly 18 upward in direction 200. As explained above, in the raised position the harvester 10 is able to travel along roads, in and out of fields, over ditches, etc. with less potential contact between the harvesting assembly 18 and the ground. Once the harvester 10 reaches a harvesting location and is ready to harvest, the harvesting assembly 18 may again be lowered and/or rotated into a harvesting position with the lift system 26, enabling the harvester 10 to begin harvesting crops (e.g., cotton).
[0037] The lift system 26 lowers the harvesting assembly 18 by releasing hydraulic fluid from the hydraulic cylinders 104. In response the hydraulic cylinders 104 contract in direction 164 enabling the linkage system 102 to rotate in direction 142. As the linkage system 102 rotates in direction 142 the harvesting assembly 18 lowers in direction 202 in preparation for harvesting.
[0038] While only certain features have been illustrated and described herein, many modifications and changes will occur to those skilled in the art. It is, therefore, to be understood that the appended claims are intended to cover all such modifications and changes as fall within the true spirit of the disclosure.

CLAIMS:
1. A harvester configured to removably couple to a tractor assembly, the
harvester, comprising:
a lift system configured to lift and lower a harvesting assembly, the lift system comprising:
a linkage system coupled to a harvester chassis and the harvesting assembly; and
a first actuator coupled to the harvester chassis and harvesting assembly, wherein the first actuator is configured to lift and rotate the harvesting assembly into a transportation position in response to extension of the first actuator and to lower and rotate the harvesting assembly into a harvesting position in response to retraction of the first actuator.
2. The harvester of claim 1, comprising a bracket configured to couple the first actuator to the harvester chassis.
3. The harvester of claim 1, wherein the linkage system comprises two rods that couple to the harvester chassis to the harvesting assembly, wherein the two rods direct a force of the first actuator to lift the harvesting assembly.
4. The harvester of claim 3, wherein the two rods couple to the harvesting assembly and to the harvester chassis with respective pivot joints.
5. The harvester of claim 3, wherein the two rods couple to opposing ends of a toolbar on the harvesting assembly.
6. The harvester of claim 1, wherein the linkage system comprises first and second bars that couple to the harvester chassis and to the harvesting assembly, wherein the first and second bars direct a force of the first actuator to lift the harvesting assembly.

7. The harvester of claim 6, wherein the first and second bars couple to a central arm, and wherein the central arm couples to the harvester chassis.
8. The harvester of claim 6, wherein the first and second bars couple to the harvesting assembly and to the harvester chassis with respective pivot joints.
9. The harvester of claim 1, comprising a second actuator coupled to the harvester chassis and to the harvesting assembly.
10. The harvester of claim 9, wherein the first and second actuator are vertically offset from the harvester chassis.