referring now to the drawings , fig1 is a rear perspective view of a bale wagon , partially loaded , with a rolling rack 40 near the rear 65 of the load rack 20 , but where the bumper feature cannot be seen . at fig2 , there is a partially loaded load rack 20 wherein the second table 30 of a bale wagon is positioned to deposit a tier of bales 12 onto the third table or load rack 20 . rolling rack 40 , via front portion 42 , slideably engages within channel 45 of the load rack 20 . for proper loading , the rolling rack 40 is at a distance x ( width of a bale ) from the tines 62 of the rolling rack 40 . when a tier of bales 12 is deposited on the load rack 20 , it pushes against tier of bales 11 and forces the rolling rack 40 to move towards the back 65 of the load rack 20 . each subsequent tier of bales ( not shown ) deposited on the load rack 20 , causes the rolling rack 40 to move towards the back 65 of the load rack until a stack of bales is formed . after the stack is dumped , the rolling rack 40 returns to the front end 60 of load rack 20 via release of its spring bias . in fig3 , the rolling rack 40 extends to a front most portion 42 which slideably engages in channel 45 of load rack 20 as described above and as depicted in fig2 . bumpers 50 are fixed against stops 55 at the front most portion 42 of the rolling rack 40 . referring to fig4 , one bumper 50 affixed to stop 55 via shim 70 at front portion 42 of the rolling rack 40 collides with the front 60 of load rack 20 within channel 45 . the use of a shim 70 , positioned between the bumper 50 and the stop 55 , effectively increases the distance from the tines 62 of the rolling rack 40 to the front 60 of the load rack 20 . the use of one or more shims 70 can adjust the rolling rack 40 to the desired forward position at the front 60 of load rack 20 within the channel 45 , thus facilitating more effective loading of the next tier of bales after the bumper 50 collides with the front 60 of the load rack 20 . referring now to fig5 , one alternative embodiment of the bumper 50 and the shim 70 are depicted apart from one another . this embodiment can be attached to the stop 55 on the rolling rack front portion 42 of the rolling rack 40 , or inside the channel 45 at the front 60 of the load rack 20 using any conventional method . when a bolt 80 is used to attach the bumper 50 , as shown in fig6 , a sleeve 82 is provided to prevent deformation of the bumper 50 when the nut 81 is tightened onto the bolt 80 . referring to fig6 , the alternative embodiment design of the bumper 50 and the shim 70 are attached face - to - face by the bolt 80 and the nut 81 inside a recessed opening 84 , which is molded inside the bumper 50 , and which opens into a hole which fittingly receives the bolt 80 . referring to fig7 , yet another embodiment design is bumper 86 attached face - to - face with the shim 70 by the embedded bolt 80 which can only be removed through the end of the bumper 86 which faces shim 70 . as is also found in the alternative embodiment shown in fig5 and 6 , a sleeve 82 is provided to prevent deformation of the bumper 50 when the nut 81 is tightened onto the bolt 80 . it is to be understood that in addition to or as an alternative to the above description , the bumper can be attached to the front wall 60 within the channel 45 of load rack 20 , as opposed to being attached to the stops 55 . additionally , the bumper 50 , can be attached to the load rack stop 55 or the front wall 60 within the channel 45 of the load rack 20 without a shim 70 . in that situation , the size of the bumper 50 can be varied to position the rolling rack 40 in the desired position at the front 60 of the load rack 20 . it will be understood that changes in the details , materials , steps , and arrangements of parts which have been described and illustrated to explain the nature of the invention will occur to and may be made by those skilled in the art upon a reading of this disclosure within the principles and scope of the invention . the foregoing description illustrates the preferred embodiment of the invention ; however , concepts , as based upon the description , may be employed in other embodiments without departing from the scope of the invention . accordingly , the following claims are intended to protect the invention broadly as well as in the specific form shown .
an improved bale wagon having at least one bumper member to position the rolling rack at the proper distance from the end of the front load rack of the bale wagon , and to dampen the impact between the front wall of the load rack and the front end of the rolling rack of the bale wagon when the rolling rack returns to the front of the load rack after release of its spring bias .