Abstract:
A baler with a pickup and a baling chamber with an inlet, the bale forming chamber having a first and second side panel, a plurality rollers rotatably disposed respectively about parallel axes. A bale edge engaging member is rotatably attached to the frame about an axis of rotation substantially parallel to said axes of the rollers, the bale edge engaging member being disposed adjacent an inside portion of one of the side panels in overlapping arrangement with a bale being formed in the baling chamber at least at times when a bale is being formed. The bale edge engaging member is spaced from the inlet to the bale forming chamber so as to not impede material entering the bale forming chamber from a pickup. Alternate embodiments have the rotatable bale edge engaging member/disc on a fixed axis adjacent the baling chamber when the bale is almost completed.

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
       [0001]    This application claims the benefit of U.S. Provisional Patent Application Ser. No. 61/407,648 filed Oct. 28, 2010 entitled “Rotary Hay Wedge for Round Balers” which is incorporated by reference herein in its entirety. 
     
    
     PRIOR ART 
     Known Potential Prior Art 
       [0002]    U.S. Pat. No. 7,395,756 is cited to show a basic round baler of the type used in this art. 
         [0003]    Patent Application Publication U.S. 2001/0047640 to Schaefer shows discs 26 located where the pickup feeds the hay into the baling chamber, the restrictor discs 26 and profiling members 31 in FIGS. 1 and 5 produce the resultant bale shape shown in Schaefer&#39;s FIG. 6. 
         [0004]    U.S. Pat. No. 4,910,949 shows a hay wedge 35 that is located in a fixed position in that part of the bale chamber adjacent the inlet receiving hay from the pickup, a similar position as that of the discs 26 of Patent Application Publication U.S. 2001/0047640 to Schaefer. 
         [0005]    U.S. Pat. No. 6,006,504 shows an inner surface 214 in FIG. 8, to contact a radially outer section of the end of a bale to create a small space or void for the net wrap material to enter the baling chamber. This device is in a fixed location within the bale chamber. 
         [0006]    U.S. Pat. No. 6,477,824 shows a deflector 70 located in the inlet area of the baler to deflect material away from the sides of the baler to reduce material build-up. 
         [0007]    EP 1516525 shows rollers 20 and 21 that have an axis of rotation transverse to the axes of rotation of the rollers that support the belts of the baler. 
         [0008]    Vermeer Mfg. Co. has manufactured and sold what is referred to as a restrictorplate that bolts to the side panel, in a fixed location, near the bale material inlet, to force the material towards the middle, reducing the pressure on the sides. 
       BACKGROUND OF THE INVENTION 
       [0009]    All of the patents and patent publications identified in this document are hereby incorporated herein in their entirety. 
       FIELD OF THE INVENTION 
       [0010]    As a round bale is being created in a baler, some of the hay is usually coming out between the belts and the sides of the baler. This is a problem because the extra strands of hay need to be removed before the hay can get to an area that it causes problems, or because the presence of these loose strands of hay produces a bale of an undesirable appearance, or the extra strands of hay can interfere with the application of net wrap around the bale when the bale is completed. 
         [0011]    Accordingly there is a need for an improvement that will reduce the amount of these extra strands of hay that are generated while a bale is being formed so that the completed bales do not have these extra strands of hay on the edges. This improvement has been found to reduce operational problems associated with build-up of loose strands of hay. The improvement has also been found to improve the appearance of the finished bale. It has further been found that when net wrap is being applied, this invention will cause the outside edges of the bale to have a shape that allows the net wrap to go over the edges more easily. This would give an improved aesthetic appearance to the bale as well. 
       SUMMARY OF THE INVENTION 
       [0012]    A baler with a baling chamber for receiving a material to be baled, the bale forming chamber comprising a left and right side panel, a plurality of members such has rollers rotatably disposed respectively about parallel axes, more than one of the parallel axes being fixed with respect to the side panels. A bale edge engaging member is rotatably attached to the frame about an axis of rotation substantially parallel to said axes of the rollers, the bale edge engaging member being disposed adjacent an inside portion of one of the side panels in overlapping arrangement with a bale being formed in the baling chamber at least at times when a bale is being formed. The baler has a material to be baled pickup to deliver material to be baled to an inlet of the bale forming chamber, and the bale edge engaging member is spaced from the inlet to the bale forming chamber so as to not impede material entering the bale forming chamber from the material to be baled pickup. 
         [0013]    In one embodiment a support arm is pivotally attached to the frame about an axis parallel to the axis of rotation of the bale edge engaging member and the bale edge engaging member is rotatably attached to the support arm. As a bale is being created, some of the hay is coming out between the belts and the sides of the baler. The rotary hay wedge has a disc that is forced into the gap between the outside belt and the side wall of the baler and is allowed to rotate with the bale. It pushes into the bale throughout formation, either tucking the edges in or knocking the strands of hay off before the hay can get to an area that it causes problems. It starts just above the lower drive roller and rotates up as the bale grows larger and larger. 
         [0014]    When the bale is completed and net wrap is being applied, the outside edges of the bale will have a shape that allows the net wrap to go over the edges more easily. The rotary hay wedge is also pushing against the net on the edges trying to tuck it around the corners better. This gives an improved aesthetic appearance. 
         [0015]    This type of device could be used on any round baler both current production and even possibly retro-fittable. The advantage that this provides is that it would eliminate potential down time from the problems that are caused by hay buildup. 
         [0016]    The rotary disc could also serve as a guide for the outside belts to keep them from tracking outward as well. The rotary wedge is a larger diameter than the other rollers which helps prevent it from wrapping as easily with material. The idea behind it is that as the hay comes around from the lower tailgate area there is nothing preventing the hay from poking out between the outside belts and the side wall. This allows hay to stick out and then the next place it contacts is a through the wall drive roller on Vermeer balers. When this contact occurs the hay can get knocked off and then end up as buildup in the front of the baler. Certain conditions are worse for this and can cause major issues. Having the rotating bale edge engaging member closer to the lower drive roller seems to be the best location for it. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0017]      FIG. 1  shows a side view of a round baler with parts on one side omitted in order to show the rollers, belts and other parts of a round baler and to show a preferred embodiment of a rotatable bale edge engaging member/disc that is biased towards the outer edge of one side of a bale being formed in the baling chamber,  FIG. 1  being before any material to be baled is in the baling chamber; 
           [0018]      FIG. 2  is a side elevational view like  FIG. 1 , but showing a windrow of material to be baled being picked up by a pickup and delivered into the inlet of the baling chamber and showing how the rotatable bale edge engaging member/disc moves radially outwardly as the bale becomes bigger; 
           [0019]      FIG. 3  is a side elevational view like  FIGS. 1 and 2 , but showing the bale being almost fully formed and how the rotatable bale edge engaging member/disc is still biased against the outer edge of one side of the bale; 
           [0020]      FIG. 4  is an enlarged side elevational view of just that part of the preferred embodiment showing an arm pivotally attached to one side wall of the baler with a tension spring biasing the outward end of the arm that has the rotatable bale edge engaging member/disc on it towards the baling chamber; 
           [0021]      FIG. 5  is a top view of the baling chamber showing a pair of the devices shown in  FIG. 4  attached to the side walls of the baler; 
           [0022]      FIG. 6  is an enlarged view of what is in the circle in  FIG. 5 , showing how the rotating bale edge engaging member tucks in the outside edges of the bale adjacent the sidewall of the bale; 
           [0023]      FIG. 7  is an enlarged exploded view of the rotatable bale edge engaging member/disc and how the mounting arm is biasing the bale edge engaging member/disc towards the baling chamber; 
           [0024]      FIG. 8  is an enlarged exploded view of the rotatable bale edge engaging member/disc much like  FIG. 7 , but with more parts exploded to show more details; and 
           [0025]      FIG. 9  is an alternate embodiment showing the rotatable bale edge engaging member/disc in solid lines having a fixed axis of rotation that is parallel to the axes of rotation of the other rollers that the belts are trained around so that instead of following the bale from its infancy to its finished size, the rotatable bale edge engaging member/disc in solid lines only tucks in the outer edges of the bale during the final stages of the bale&#39;s formation; 
           [0026]      FIG. 9  also shows another an alternate embodiment showing the rotatable bale edge engaging member/disc in dashed lines having a fixed axis of rotation that is parallel to the axes of rotation of the other rollers that the belts are trained around so that instead of following the bale from its infancy to its finished size, the rotatable bale edge engaging member/disc in dashed lines only tucks in the outer edges of the bale during the final stages of the bale&#39;s formation, the difference between the embodiment shown in solid and dashed lines being that the axis of rotation of the one in solid lines has the axis of rotation outside the baling chamber at all times and the embodiment shown in dashed lines being that the axis of rotation of the one in dashed lines has the axis of rotation inside the baling chamber only during the final stages of formation of the bale; 
           [0027]      FIG. 10  is a top view of the baling chamber similar to  FIG. 5 , but showing bale edge engaging members arranged on a tube and projecting through the side walls of the baler; 
           [0028]      FIG. 11  is a cross sectional view taken along lines  11 - 11  of  FIG. 9  showing the baler belts trained over a roller that has bale edge engaging members attached through the sidewalls of the baling chamber; 
           [0029]      FIG. 12A  is a side elevational schematic view showing the preferred embodiment of  FIGS. 1-8  with a bale edge engaging member shown in dashed lines in the position it would be in  FIG. 2  and in a dark circle in the position it would be in  FIG. 3  and furthermore showing netwrap entry point  70 ; 
           [0030]      FIG. 12B  is a side elevational schematic view showing the preferred embodiment of  FIG. 9  with a bale edge engaging member and furthermore showing netwrap entry point  70 ; 
           [0031]      FIG. 12C  is a side elevational schematic view showing another preferred embodiment showing only two of several fixed position belt rollers with a bale edge engaging member disposed between them and furthermore showing netwrap entry point  170 ; 
           [0032]      FIG. 12D  is a side elevational schematic view showing still another preferred embodiment showing only two of several fixed position belt rollers with a bale edge engaging member disposed before them and furthermore showing netwrap entry point  270 ; and 
           [0033]      FIG. 12E  is a side elevational schematic view showing still another preferred embodiment of a baler rotating in the opposite direction of all of the other embodiments shown and with a bale edge engaging member disposed before any of the rollers (not shown) and furthermore showing netwrap entry point  370 . 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0034]    Referring now to the drawings wherein like reference numbers designate identical or corresponding parts throughout the several views,  FIG. 1  shows a baler  10  having a tongue  11  attached to a frame  12 . A pickup  13  picks up hay or other material to be baled from the ground and delivers it to an inlet  14  of a baling chamber  15  of the baler  10 . A plurality of rotatable members/rollers  20 - 28  are operatively rotatably attached to the frame  12  about fixed parallel substantially horizontal axes. Belts  30  are trained around the fixed rollers  20 - 28  and around moveable rollers  29 ,  31  and  32  which are disposed about moveable parallel axes which are also parallel to the axes of the fixed axis rollers  20 - 28 . The operation of this baler is explained in detail in U.S. Pat. No. 7,395,756 which has been incorporated herein by reference. It is to be understood, however, that the present invention is not limited to a belt type round baler but could be used with any round baler, for example including but not limited to round balers that use rotatable sprockets, slats and belts or chains like that shown in EP1 595 441 (which is hereby incorporated herein by reference) or just rollers and no belts or chains 
         [0035]    Attached to each sidewall is a rotatable disc/bale edge engaging member assembly  40  for tucking the edges of a bale in the baling chamber in or knocking the strands of hay off before the hay can get to an area that it causes problems. 
         [0036]    The rotatable disc/bale edge engaging member assembly  40  is shown in more detail in  FIGS. 4-8 . The basic parts of this rotatable disc/bale edge engaging member assembly  40  include a bale edge engaging member  41  bolted to the sidewall  50  as can be seen in  FIG. 5 . The bale edge engaging member  41  has an arm  42  pivotally attached about a pin  43 / 43   a , the arm  42  being biased to the  FIG. 1  position by a tension spring  44 , best seen in  FIG. 4 . The spring is attached to the bale edge engaging member  41  at flange  45  at one end and to the arm  42  by attaching the other end of the spring  44  in one of three holes  46   a ,  46   b  or  46   c  in the arm  42  ( FIG. 4 ), it being understood that the biasing force on the arm  42  can be changed by choosing the hole corresponding to the lever arm length desired, hole  46  a providing the greatest pivoting force and hole  46   c  providing the least pivoting force from the spring. This invention is not, of course, limited to this specific way of adjusting the pivoting force on arm  44 . 
         [0037]    A rotatable bale edge engaging member/disc  47  is rotatably attached to the arm  42  about pin  48  as best seen in  FIG. 4 . A desired shape of the bale edge engaging member/disc  47  can be seen in  FIG. 7  with a beveled portion  47   b . A bearing  47   c  is disposed in sleeve portion  47   a  for example. 
         [0038]    In operation, as a bale is being created as shown in  FIGS. 2 ,  5  and  6  for example, some of the hay can come out between the belts and the sides  50  of the baler. The rotary hay wedge disc  47  is forced into the gap  60   g  between the outside belt  30  and the side wall  50  of the baler  10  by the force of the spring  44  and is allowed to rotate with the bale  60 . It pushes into the bale throughout formation, either tucking the edges in or knocking the strands of hay off before the hay can get to an area that it causes problems. It starts just above the lower drive roller and rotates up as the bale grows larger and larger, for example as shown sequentially from  FIG. 1  to  FIG. 3 . 
         [0039]    When the bale  60  is completed and net wrap is being applied, the outside edges of the bale will have a shape that allows the net wrap to go over the edges more easily. The rotary hay wedge is also pushing against the net on the edges trying to tuck it around the corners better. This gives an improved aesthetic appearance. 
         [0040]    This type of device could be used on any round baler both current production and even possibly retrofittable. The advantage that this provides is that it would eliminate potential down time from the problems that are caused by hay buildup. 
         [0041]    The rotary disc could also serve as a guide for the outside belts to keep them from tracking outward as well. The rotary wedge is a larger diameter than the other rollers which helps prevent it from wrapping as easily with material. The idea behind it is that as the hay comes around from the lower tailgate area there is nothing preventing the hay from poking out between the outside belts and the side wall. This allows hay to stick out and then the next place it contacts is a “through the wall” drive roller on balers. In other words, when unwanted hay strands extend out between the belts and the side wall it becomes a problem because the unwanted hay strands rotate with the bale until that unwanted hay strand contacts one of the rollers that extends through the sidewall and those strands of hay can extend through those same openings in the side walls. 
         [0042]    When this contact occurs the hay can get knocked off and then end up as buildup in the front of the baler. Certain conditions are worse for this and can cause major issues. 
         [0043]    The device  40  could also be mounted off of the belt tightener or in the tailgate if desired. The preferred embodiment illustrated in  FIGS. 1-3  have the device  40  located close to the lower drive roller. This is a vast improvement over the arrangement shown in Patent Application Publication U.S. 2001/0047640 to Schaefer which shows discs 26 located where the pickup feeds the hay into the baling chamber. 
         [0044]    Alternate embodiments are shown in  FIG. 9 , which have a baler  100  with a bale edge engaging member/disc  147  in solid lines having a fixed axis of rotation that is parallel to the axes of rotation of the other rollers that the belts are trained around so that instead of following the bale from its infancy to its finished size, the rotatable bale edge engaging member/disc  147  in solid lines only tucks in the outer edges of the bale  160  during the final stages of the bale&#39;s formation. 
         [0045]      FIG. 9  also shows another an alternate embodiment showing the rotatable bale edge engaging member/disc  147   a  in dashed lines having a fixed axis of rotation that is parallel to the axes of rotation of the other rollers that the belts  30  are trained around so that instead of following the bale  160  from its infancy to its finished size, the rotatable bale edge engaging member/disc  147   a  in dashed lines only tucks in the outer edges of the bale  160  during the final stages of the bale&#39;s formation, the difference between the embodiment shown in solid  147  and dashed lines  147   a  being that the axis of rotation of the one in solid lines  147  has the axis of rotation outside the baling chamber at all times and the embodiment shown in dashed lines  147   a  being that the axis of rotation of the one in dashed lines has the axis of rotation inside the baling chamber only during the final stages of formation of the bale  160 . 
         [0046]    Looking now to  FIG. 10 , a top view of the baling chamber similar to  FIG. 5  is shown, but showing bale edge engaging members  247  are arranged on a belt supporting roller  28 , the bale edge engaging members  247  projecting through openings in the side walls  50  of the baler. 
         [0047]    Referring to  FIG. 11 , a cross sectional view is shown taken along lines  11 - 11  of  FIG. 9  showing the baler belts  30  trained over a roller  28  that has bale edge engaging members  247  attached through the sidewalls  50  of the baling chamber. 
         [0048]      FIG. 12A  is a side elevational schematic view showing the preferred embodiment of  FIGS. 1-8  with a bale edge engaging member  47  shown in dashed lines in the position it would be in  FIG. 2  and in a dark circle in the position it would be in  FIG. 3  and furthermore showing netwrap entry point  70 . While it is not essential for the invention in its broadest application, it can be important that the bale edge engaging members  47  be positioned as close as possible, seen in the direction of rotation of the bale, before the gap  70  or entry point of netwrap that would be placed around a completed bale  60 . 
         [0049]    Looking now to  FIG. 12B , a side elevational schematic view like the preferred embodiment of  FIG. 9  with a bale edge engaging member  147  and showing netwrap entry point  70  positioned as close as possible, seen in the diection of rotation of the bale, before the gap  70  or entry point of netwrap that would be placed around a completed bale  60 . 
         [0050]      FIG. 12C  is a side elevational schematic view showing another preferred embodiment showing only two of several fixed position belt rollers  27  and  28  with a bale edge engaging member  247  disposed between them and furthermore showing netwrap entry point  170  so that netwrap entry point  170  is positioned as close as possible, seen in the direction of rotation of the bale, before the gap  170  or entry point of netwrap that would be placed around a completed bale  60 . 
         [0051]    Referring now to  FIG. 12D , a side elevational schematic view shows still another preferred embodiment illustrated with only two of several fixed position belt rollers  21  and  23  with a bale edge engaging member  347  disposed before them and furthermore showing netwrap entry point  270 . 
         [0052]    Finally,  FIG. 12E  is a side elevational schematic view showing still another preferred embodiment of a baler rotating the crop in the baling chamber in the opposite direction of all of the other embodiments shown and with a bale edge engaging member  447  disposed before any of the rollers (not shown) and furthermore showing netwrap entry point  370  so that netwrap entry point  370  is positioned as close as possible, seen in the direction of rotation of the bale, before the gap  370  or entry point of netwrap that would be placed around a completed bale  60 . 
         [0053]    Obviously many modifications and variations of the present invention are possible in light of the above teachings. It is, therefore, to be understood that within the scope of the appended claims, the invention may be practiced otherwise than as specifically described.