Abstract:
The present invention is a compact fruit-vine harvester and separation system in which the harvested fruit travels along a vertical plane inside the harvester during processing, followed by a single turn for output. The system includes a machine and related methods for harvesting vine-borne crops. The machine is relatively compact, and provides for vine borne crops to be severed, separated, cleaned and machine-sorted along a longitudinal axis before making a single turn prior to exit. Harvested fruit passing through the machine drops by as much as 18 inches less than in other harvesters, thereby reducing the potential for fruit damage. The machine incorporates a combination blower and suction system for efficient removal of unwanted dirt, vegetation and debris, and an optional roller to prevent clogging of the suction system.

Description:
[0001]    This is a divisional of U.S. patent application Ser. No. 10/942,078 filed on Sep. 14, 2004, which is incorporated herein in its entirety by this reference. 
     
    
     BACKGROUND OF THE INVENTION 
       [0002]    1. Field of the Invention 
         [0003]    The present invention relates to machines and methods for harvesting food crops, and more particularly, to an improved small-scale machine and related methods for separating larger volumes of vine-borne crops from their vines while effectively removing unwanted dirt, vegetation and debris, minimizing damage to the fruit itself, and promoting better sorting of fruit. 
         [0004]    2. Description of the Prior Art 
         [0005]    Vine-borne crops have traditionally been harvested and processed by hand. However, such manual harvesting and processing was often tedious, time-consuming and expensive. Various machines, such as the one disclosed in U.S. Pat. No. 6,033,305, have been developed over the years to automate part, or all, of this process. These machines are able to harvest vine-borne crops from the ground at much faster speeds than humans. However, these machines were often inefficient in other aspects of the harvesting process. Early harvesting machines severed entire plants and dropped them upon the ground, with the desired crops remaining affixed to the plants. Then, collection devices would retrieve the mixture of vegetation, dirt and debris for processing. Human sorters would then be required to sort through the mixture to separate the crops from the rest, and extract the former. The human sorters had to quickly process these mixtures to prevent a backlog. As a result, some suitable crops were lost because they were too far entangled within the plants, or simply overlooked by the human sorters. 
         [0006]    Various devices have been developed over the years to improve the mechanized harvesting process, and to minimize the need for human sorters. For example, U.S. Pat. Nos. 4,257,218, 4,335,570, and 6,257,978 all disclose harvesting machines utilizing at least one form of agitating device (such as vibrating shaker heads or conveyor belts) to dislodge tomatoes from the vines. Several harvesting machines, such as those disclosed in U.S. Pat. Nos. 6,257,978 and 6,033,305, also utilize forced air pressure systems to further remove dirt and debris. 
         [0007]    Unfortunately, larger is not always better. While wider and larger machines are generally capable of harvesting and processing a higher volume of vine-borne crops, many road and/or field situations make it impossible or impractical to use or bring these large machines in to perform the desired harvesting. Such machines are also more difficult to maneuver. Such limited maneuverability may require the machine operator to spend additional time repositioning the machines to process each row of crops, or cause the machines to inadvertently trample one or more rows. In addition, larger machines tend to weigh more, and the added weight not only affects maneuverability (e.g. turning), it also makes the larger, heavier machines unusable in moist or muddy fields where they tend to bog down. It is therefore desirable to provide a smaller scale machine that is capable of harvesting larger volumes of vine-borne crops. 
         [0008]    In addition, the design of many existing large and small-scale machines may cause damage to the fruit by imparting numerous drops and/or turns during processing. Many machines require the fruit to drop a distance of several feet over the course of processing through the machine, and to make several turns during the process. Each drop and each turn provides another point where the fruit may be damaged, so it is desirable to minimize the number and/distance that the fruit drops through the machine, and to minimize the number of turns the fruit makes as it travels through the machine. 
         [0009]    Effective separating and sorting of harvested fruit is also important. More efficient removal of dirt, vegetation, trash and debris as well as more accurate sorting of fruit is possible when the harvested materials are widely dispersed, and not bunched together. Another unfortunate side effect of machines in which the fruit makes multiple turns is that the fruit and associated trash and debris tends to bunch together. Rather than the fruits being evenly spaced upon the conveyors (so that they may be easily examined and processed), these corners cause the fruits to become crowded as they are transported onto an intersecting conveyor sometimes forming windrows, making them more difficult to inspect and sort. This bunching makes removal of the trash and debris more difficult, and once removed, the bunching of the harvested fruit makes sorting more difficult as well. Furthermore, each turn involves a drop from one conveyor to another, risking additional damage to the fruit, and requiring more maintenance and cleanup from breakage. Transverse turns also tend to increase the overall width and size of the harvester machine. All of these consequences make it even more desirable to minimize the number of turns the fruit makes as it travels through the machine. 
         [0010]    It is therefore desirable to provide a small-scale vine-borne crop harvesting machine capable of processing a large volume of crops that is usable in a wide variety of field situations where larger machines cannot be used. It is further desirable that the harvesting machine effectively process vine-borne crops with minimum potential damage to the fruit. It is further desirable that the machine provide a minimum number of drops and turns so that the fruit is less susceptible to damage, so that trash and debris may be more effectively removed, and so that the fruit itself may be more efficiently sorted. 
       SUMMARY OF THE INVENTION 
       [0011]    The present invention provides a compact fruit-vine harvester and separation system in which the harvested fruit makes only one ninety-degree turn (for exit) following processing. The system includes a machine and related methods for harvesting vine-borne crops. The machine is relatively compact, having a frame that is dimensioned such that its width is substantially the same as the wheel or track base so that it may travel on narrow roads, and be used in narrow field conditions. The machine provides for vine borne crops to be severed, separated, cleaned and machine-sorted along a longitudinal axis (straight line) before making a single turn just prior to exit. Harvested fruit passing through the machine drops by as much as 18 inches less than drops called for in existing machines. The machine incorporates a combination blower and suction system for efficient removal of unwanted dirt, vegetation and debris. 
         [0012]    In particular, a severing device is provided at the forward end of the machine for severing fruit-laden vines from the ground. A first conveyor is provided that brings the severed fruit-laden vines to an upper position in the machine. The severed fruit-laden vines cross an adjustable gap and are delivered onto a second conveyor, the gap allowing loose dirt and debris to fall through the machine to a dirt cross conveyor. The material on this conveyor is passed through a vision system which ejects the red fruit back onto the machine as the dirt and debris pass through to the ground. The fruit-laden vines are then introduced into a rotating shaker having tines that engage and loosen the vines, causing the fruit to be dislodged as it shakes. The dislodged fruit drops onto a second conveyor below the shaker, and the vines are deposited onto a third conveyor. While traveling along the third conveyor, which is provided with large slots or as a wider pitch belted chain so that fruit can pass through, additional agitation may be imparted to the vines to dislodge any remaining fruit which falls through and is returned to the second conveyor. All of the conveyors are set up relatively close to each other so as to minimize the dropping distance of the fruit. These conveyors are all lined up along the same longitudinal axis, so that the fruit and related materials are not turned and remain widely dispersed across the width of the conveyors. 
         [0013]    Some dirt, debris, and vegetation may be deposited on the second conveyor along with the dislodged fruit. To remove this remaining trash, the second conveyor delivers the fruit and trash across an adjustable gap in which a strong upward air flow is provided through a nozzle attached to a blower below. The nozzle extends along the width of the second conveyor so that all fruit and trash is affected thereby. The airflow may be adjusted so that it is strong enough to blow away all loose dirt, debris and vegetation without blowing away the fruit itself. The airflow also tends to remove trash and vegetation that may have become adhered to the second conveyor because of moisture or the like. An intake opening for a variable speed suction unit is provided above the gap and blower nozzle to receive and remove all of the trash that is blown free by the lower nozzle. A continuously rotating roller is provided adjacent to the upper intake opening to dislodge any large pieces of vegetation or trash so that the upper opening does not become clogged. The roller itself is preferably smooth so that it does not become entangled with the vegetation or trash, but it may be provided with teeth, lagging, textured covering or tines to engage such materials if so desired. The roller may rotate in either direction, so long as it keeps the vegetation and trash from clogging the intake opening of the upper suction unit. 
         [0014]    The cleaned fruit that passes through the blower/suction gap is then deposited onto a fourth conveyor that is also in line with the three previous conveyors. The fourth conveyor takes the fruit to an automatic sorting unit which kicks out unwanted fruit according to its programmed instructions. Since the fruit has not traveled through any turns up to this point, it remains evenly separated on the fourth conveyor thereby improving the sorting process. Then, finally, the fruit makes its one and only turn where it is deposited onto a transversally oriented conveyor. Here, hand sorting is performed, followed by deposit of the fruit onto a final conveyor which takes it up, out and deposits it into a waiting hopper alongside the machine. In an alternative embodiment, the transversally oriented conveyor and the final conveyor are one and the same, making the fruit available for sorting and then elevating it out of the machine to the hopper waiting alongside. 
         [0015]    It is therefore a primary object of the present invention to provide a machine for harvesting vine-borne crops in which the harvested fruit travels along a straight path within the machine as the fruit is separated from the vines, cleaned and sorted, prior to making a single turn followed by exit. 
         [0016]    It is also an important object of the invention to provide a machine for harvesting vine-borne crops in which the harvested fruit travels a minimal distance from the uppermost to the lowermost point during processing, reducing the overall distance the fruit drops through the machine in order to reduce the potential for damage to the fruit. 
         [0017]    It is also an important object of the invention to provide a machine for harvesting vine-borne crops in which the harvested fruit is widely dispersed as it is conveyed through the machine to facilitate better removal of unwanted trash and debris, and to facilitate better sorting of fruit. 
         [0018]    It is also an important object of the invention to provide a machine for harvesting vine-borne crops in which unwanted dirt, vegetation and debris is removed through the dual action of an adjustable lower blower device and an adjustable upper suction device that are provided adjacent to each other along the path of travel through the machine. 
         [0019]    It is also an important object of the invention to provide a small-scale machine for harvesting large volumes of vine-borne crops that may be deployed in vineyards and fields where larger machines cannot be efficiently used. 
         [0020]    It is also an important object of the invention to provide improved methods for harvesting and processing vine-borne crops. 
         [0021]    Additional objects of the invention will be apparent from the detailed descriptions and the claims herein. 
     
    
     
       DESCRIPTION OF THE DRAWINGS 
         [0022]      FIG. 1  is a top view of an embodiment of the present invention. 
           [0023]      FIG. 2  is a side view of an embodiment of the present invention along line  2 - 2  of  FIG. 1 . 
           [0024]      FIG. 3  is a rear view of an embodiment of the present invention along line  3 - 3  of  FIG. 1 . 
           [0025]      FIG. 4  is a cut away side view along line  4 - 4  of  FIG. 1  illustrating major operative elements of flow paths through the invention. 
           [0026]      FIG. 5  is a detailed cut away side view along line  5 - 5  of  FIG. 1  of an exemplary air blower, air suction device and mechanical fruit sorter of an embodiment of the present invention. 
           [0027]      FIG. 6  is a side view of the mechanical fruit sorter of an embodiment of the present invention. 
           [0028]      FIG. 7  is a top view of a suction device of an embodiment of the present invention along line  7 - 7  of  FIG. 2 . 
       
    
    
     DETAILED DESCRIPTION 
       [0029]    Referring to the drawings wherein like reference numerals designate like or corresponding parts throughout the several views, and referring particularly to  FIGS. 1 and 2 , it is seen that the illustrated exemplary embodiment of the invention is an apparatus and method for harvesting above-ground food plants grown in rows upon elongated planting ridges. The exterior components of the apparatus generally comprise a self-propelled vehicle body  10  having a driving compartment  1   l , an adjustable arm  12  with a pickup device  14  and conveyor  15 , a separator  20 , a sorting platform  16 , and a discharging chute  17 . 
         [0030]    As indicated in  FIG. 2 , the adjustable arm  12  is affixed to the front end of the vehicle body  10 . The adjustable arm  12  may be any number of commercially available devices that allow the operator to adjust the position of the arm  12  relative to the ground, said position depending upon the characteristics of the particular crop harvested or its environment. A gage wheel  13  for height adjustment is mounted at the front end of the adjustable arm  12 . The pickup device  14  may be any commercially available device capable of severing tomato vines V at or near ground level, such as a cutting disc or plurality of opposing blades, and a lift for placing the severed vines onto conveyor  15 . The pickup conveyor  15  is an endless longitudinal conveyor belt traveling in a rearward direction into the separator  20 . The sorting platform  16  is affixed to the rear end of the vehicle body  10 . Platform  16  allows one or more humans to examine and hand sort the tomatoes T on conveyor  26  before they are passed along to the discharging chute  17 . Chute  17  is depicted in the rear view of  FIG. 3  in its retracted position, with phantom lines showing its extended position over a receiving hopper in an adjacent row. 
         [0031]      FIG. 4  depicts the internal operation of the separator  20  viewed from the right side. An endless motor-driven longitudinal receiving conveyor  19  is adapted to receive the tomato vines V from the exterior pickup conveyor  15 . Said receiving conveyor  19  travels toward the rear end of the vehicle body  10 . An adjustable gap  18  is provided between the pickup conveyor  15  and receiving conveyor  19 , said gap  18  allowing loose tomatoes T, dirt clods and other debris to drop from the vines V while said vines travel between the two conveyors  15  and  19 . It is to be appreciated that the width of gap  18  may be varied to account for different sizes of vines V, tomatoes T, dirt clods and debris. For example, gap  18  may be set at a sufficiently small size that only the smaller dirt clods and debris fall through, or at a sufficiently large size that larger objects including small loose tomatoes T may also fall through. 
         [0032]    An endless transversely oriented motor-driven debris conveyor  21 , having one end underneath gap  18  and the opposite end extending outside the vehicle body  10 , is positioned to receive the loose tomatoes T, dirt clods and debris falling through gap  18 . A commercially available sorting mechanism (not depicted) may be mounted in close proximity to the debris conveyor  21  to recognize loose tomatoes T thereon, and place them onto the endless motor-driven longitudinal first processing conveyor  22 , while the remaining dirt clods and debris are transported outside the vehicle body  10 . Alternatively, if gap  18  is set at a sufficient size to allow only dirt clods and debris to fall through, the debris conveyor  21  may transport all objects falling through the gap  18  to the outside of the vehicle body  10 . Processing conveyor  22  is made up of segments which provide a plurality of openings or slots that are of sufficient size to support tomatoes T, but allow small pieces of dirt, vegetation and debris to fall through. Larger pieces are removed by blower  40  and suction device  60  described below. 
         [0033]    A shaker brush  30  is positioned for receiving tomatoes and vines from first processing conveyor  19 . Said shaker brush  30  may be any commercially available brush comprising a plurality of tines  31  and an agitating mechanism (not depicted) for concurrently rotating and vibrating the shaker brush  30 , such as an eccentric weight assembly or vibrating motor. It is rotatable along a central axis in a downward direction, causing the vines V to be pulled underneath the shaker brush  30  toward the rear end of the vehicle body  10 . The vibratory force of the shaker brush  30  is sufficient to dislodge the majority of the tomatoes T from their vines V, along with most remaining dirt clods and debris, without excessively damaging the tomatoes T. The dislodged tomatoes T, dirt clods and debris are dropped onto the first processing conveyor  22 , while the vines V (along with any tomatoes T still lodged therein) are deposited upon the recovery conveyor  23 . 
         [0034]    The recovery conveyor  23  is an endless motor-driven longitudinal conveyor traveling toward the rear end of vehicle body  10 . Conveyor  23  is made up of segments which provide a plurality of openings or slots that are of sufficient size to allow tomatoes to fall through. An agitating mechanism (not depicted) may be provided in communication with the recovery conveyor  23 . Said agitating mechanism may be any commercially available device for agitating the tomatoes and vines on the recovery conveyor  23 . The agitator should be capable of providing loosening vibratory motions to further separate the tomatoes T that remain entangled with the vines V at this stage. A recovery shelf track  24  is positioned underneath the return segment of the recovery conveyor  23  to capture the tomatoes T falling through the slots of the recovery conveyor  23 , and, in conjunction with the return movement of the recovery conveyor  23 , transport the tomatoes T to the first processing conveyor  22 . 
         [0035]    The second processing conveyor  25  is an endless motor-driven longitudinal conveyor belt traveling toward the rear end of vehicle body  10 . Conveyor  25  is positioned near the rear end of first processing conveyor  22 . There is an adjustable gap  28  between the first processing conveyor  22  and the second processing conveyor  25 . An air blower  40  is mounted below the front end of the second processing conveyor  25 , with the nozzle directed toward the gap  28  between the two conveyors, so that the forced air pressure emitted from the nozzle  42  contacts the tomatoes T, vegetation, dirt and debris falling from the first processing conveyor  22  onto the second processing conveyor  25 . Such forced air pressure may be varied so that it is of sufficient strength to separate vegetation, dirt and debris from the tomatoes T, and force said materials upward without blowing the tomatoes themselves away. An air suction device  60 , such as a fan or vacuum, is positioned above the gap  28 , so that its opening is opposite the nozzle of the air blower  40 . The size and shape of this opening may be varied, as discussed below, to assure that equal air suction (vacuum) is provided across the entire path (width) of conveyor  25  and gap  28 . The vacuum imparted by this suction device  60  may be varied so that it is of sufficient strength to capture the dirt, vegetation and debris forced upward by the air pressure emitted from the blower  40 . 
         [0036]      FIG. 5  provides a detailed side view of the air blower  40  and air suction device  60  of the present invention. As shown therein, the nozzle  42  of the air blower  40  is positioned in close proximity to and across the width of gap  28  between the first processing conveyor  22  and second processing conveyer  25 , so that the forced air pressure emitted through nozzle  42  contacts the tomatoes T, dirt clods and debris falling from the first conveyor  22  to the second  25 . The suction device  60  is positioned above the gap  28  with its opening  63  directly across from the nozzle  42 , so that the forced air pressure emitted from the nozzle  42  (and the dirt, vegetation and debris carried by such pressure) is directly received by the opening  63  of the suction device  60 . Blower  40  also provides the additional function of dislodging vegetation or debris that may have become adhered to conveyor  22  through moisture or the like, thereby improving the efficiency and operational functionality of conveyor  22 . 
         [0037]    A roller  45  is provided adjacent to and below the opening  63  of suction device  60 , and extends across the width of said opening  63 . Roller  45  may have a smooth surface, or it may be provided with teeth, lagging or tines of appropriate length to engage the vegetation and other debris traveling into opening  63 . The purpose of roller  45  is to rotate while the suction device  60  is operating so as to make contact with and dislodge any excessive vegetation or other debris in order to prevent opening  63  from being clogged. As shown in  FIG. 5 , roller  45  may be rotated in a clockwise direction so as to continuously be causing vegetation and debris to be pushed out and away from opening  63 . However, this may cause such vegetation and debris to be deposited with the relatively clean tomatoes T on conveyor  25 . Thus, in many circumstances, it may be more beneficial for roller  45  to rotate counter-clockwise so as to force the vegetation and debris into opening  63  so that it may be carried away. Among other things, the size and moisture content of the vegetation and debris may dictate whether roller  45  operates in a clockwise or counter-clockwise direction. 
         [0038]    A side view of suction device  60  is shown in  FIG. 5 , and a top view is shown in  FIG. 7 . Suction device  60  includes a variable speed fan or blower unit  61  attached to a channel  62  that is attached, in turn, to a duct  64  leading to opening  63 . Because of the change in direction of airflow through channel  62  and duct  64 , the size and shape of opening  63  may be varied so as to provide a uniform level of suction across the entire path of conveyor  25  and gap  28 . By way of example and without limitation, opening  63  may not be provided in a rectangular form, but the left side of opening  63  may be more narrow than the right side so as to assure level airflow across its length. 
         [0039]    It is to be appreciated that all of conveyors  15 ,  19 ,  22 ,  23  and  25  are provided along the same longitudinal axis, and are operatively positioned above and/or below each other. In this way, the tomatoes T removed from the vines travel along a straight path, moving from the front toward the rear of the machine, being directed only by the conveyors and by gravity. This configuration avoids any left or right turns in the path that the tomatoes T travel through the machine, resulting in better distribution of the tomatoes across conveyor  25  when they reach the sorting stage. Left and right turns in the paths of other machine cause the tomatoes to roll together into windrows that are more difficult to separate and sort. 
         [0040]    An endless motor-driven transversely oriented output conveyor  26  is positioned near the rear end of the second processing conveyor  25 . A small gap is provided between the second processing conveyor  25  and the output conveyor  26 . An optical/mechanical fruit sorter  50  is mounted in close proximity to this gap. The optical/mechanical fruit sorter  50  may be any commercially device capable of selecting or rejecting tomatoes T based upon certain predetermined criteria, such as color. It should also comprise means of sorting tomatoes T based upon their satisfaction of the predetermined criteria, such as a mechanical arm or pivoting gates. It is to be understood that the mechanical fruit sorter  50  may be replaced by, or supplemented with, human sorters who can manually examine the tomatoes on conveyor  26  as they stand on platform  16 . 
         [0041]    Regardless of the particular examination method utilized, tomatoes T satisfying the predetermined criteria are transported to output conveyor  26 , while rejected tomatoes are removed therefrom, either by the mechanical sorter  50  or human sorters. The output conveyor  26  is in communication with the discharging chute  17 , which transports the satisfactory tomatoes from the present invention onto any number of commercially available hoppers, such as a trailer or truck bed  70 . 
         [0042]      FIG. 6  depicts the mechanical fruit sorter  50  of the present invention. It is seen that the mechanical fruit sorter  50  comprises a sensor  51  and pivoting gate  52 . The sensor  51  may be any commercially available device capable of determining whether the tomato T satisfies the predetermined criteria inputted by the operator. Tomatoes T satisfying such criteria are permitted to fall toward output conveyor  26 . As to tomatoes T 1  failing such criteria, the fruit sorter  50  causes the gate  52  to pivot outward, causing the failing tomatoes T 1  to miss the output conveyor  26  and fall outside the vehicle body  10 . 
         [0043]    The use of a particular embodiment of the present invention will now be described. The operator inputs a series of predetermined criteria into the mechanical fruit sorter  50 , which defines the parameters for the ‘acceptable’ tomatoes harvested. The size of gap  18  is selected and set. The initial airflow for blower  40  and suction  60  is also selected, although these may be changed during processing to provide appropriate removal of debris. The present invention is then positioned before a row of tomato vines V. The adjustable arm  12  is placed in such a manner that the cutting device  14  will sever the tomato vines V at or near ground level. As the present invention proceeds along the row of tomato vines V, cutting device  14  severs the tomato vines V. The pickup mechanism receives the severed tomato vines V (along with loose tomatoes T, dirt clods and debris), and places them onto the pickup conveyor  15 . The pickup conveyor  15  then transports the vines V rearward into separator  20 . 
         [0044]    Inside the separator  20 , the tomato vines V are transported over the gap  18  between the pickup conveyor  15  and receiving conveyor  19 . As they cross the gap, loose tomatoes T, dirt clods and debris smaller than the width of the gap fall through, and onto the debris conveyor  21 . The debris conveyor  21  passes the mixture through a sorting mechanism. Tomatoes T within the mixture are diverted to the first processing conveyor  22 , while the dirt clods and debris continue along the debris conveyor  21  to be discarded outside the vehicle body  10 . 
         [0045]    The tomato vines V upon the receiving conveyor  19  contact the shaker brush  30 . As the downward rotation of the shaker brush  30  pulls the tomato vines V underneath the brush, the vibration of the brush tines  31  dislodges the majority of the tomatoes T from the vines V, along with the remaining dirt clods and debris. The dislodged tomatoes T, dirt clods and debris fall onto the first processing conveyor  22 , while the vines V (along with any tomatoes T still lodged therein) are deposited by the shaker brush  30  upon the recovery conveyor  23 . 
         [0046]    As the recovery conveyor  23  transports the vines V toward the rear of the vehicle body  10 , it is vibrated by an agitating mechanism. The vibrating motion of said mechanism is sufficient to dislodge the remaining tomatoes T from the vines V. These tomatoes T fall through the slots of the recovery conveyor  23  onto the recovery shelf track  24 . The vines continue rearward until they are ejected from the rear end of the vehicle body  10 . The return direction of the recovery conveyor  23  receives the tomatoes T and deposits them upon the first processing conveyor  22 , along with the tomatoes T dislodged by the shaker brush  30 . 
         [0047]    The first processing conveyor  22  continues to transport the tomatoes T (and remaining dirt clods and debris) toward the rear end of the vehicle body  10 . When the mixture reaches the rear end of the first processing conveyor  22 , it falls to the second processing conveyor  25 . During the fall, the mixture is struck by air pressure from the air blower  40  mounted underneath the second processing conveyor  25 . The air should be of sufficient volume to cause the tomatoes to “dance,” that is, to be moved slightly so that the debris and vegetation around them is removed, while the tomatoes themselves are not. Such air pressure causes the dirt and debris to separate from the tomatoes T and fly upward, where they are captured by suction pressure from the air suction device  60 . The suction device  60  ejects the dirt clods and debris from the rear end of the vehicle body  10 , while the tomatoes T continue along the second processing conveyor  25 . 
         [0048]    As the tomatoes T reach the rear end of the second processing conveyor  25 , they are analyzed by a mechanical fruit sorter  50 . Tomatoes T satisfying the particular criteria previously inputted by the operator are transported onto output conveyor  26 , while unacceptable tomatoes are discarded out the bottom of the vehicle body  10 . The output conveyor  26  transports the acceptable tomatoes T past manual sorters standing on platform  16 , and then to the discharging chute  17 , where the tomatoes T are placed into storage hoppers  70 . 
         [0049]    It is to be understood that variations and modifications 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 to be limited by the specific embodiments disclosed herein, but only in accordance with the appended claims when read in light of the foregoing specification.