fig1 is a perspective view of a feed support , generally indicated at 10 , according to one embodiment of the invention , and fig2 and 3 are top plan and side elevational views , respectively , of the feed support 10 . the feed support 10 includes a generally vertical support member 12 , mounted at the top center of which is an attachment plate 14 . the support member 12 of the illustrated embodiment is a cylindrical member that may , for example , be comprised of a section of heavy metal pipe , although the support member may have any outer or cross - sectional shape in other embodiments of the invention . in a typical installation , the lower end 16 of the support member 12 would be driven into the ground or permanently fixed to a stable , immobile base structure so as to provide support and stability for the feed support 12 . if hollow , the interior of the support member 12 may be configured to accept an adapter to allow it to be attached to a base . the support member 12 may have , for example , a length of about 1 foot . the attachment plate 14 is generally circular , although it may have essentially any shape , and may be comprised of , for example , an aluminum or steel plate . as shown , the plate 14 is fixedly attached to the upper end of the support member 12 . in one embodiment , the attachment plate 14 may have a diameter of about 1 . 5 feet . as will be described below in more detail , in some embodiments , particularly if the support member 12 is hollow , the attachment plate 14 may have a hole at its center , thus providing a continuous , open channel through the support member 12 and attachment plate 14 . arrayed around the perimeter of the attachment plate 14 are a number of extending arm assemblies 18 . each of the arm assemblies 18 is attached to the attachment plate 14 such that it can pivot between an extended position depicted in fig1 - 3 and a retracted , stowed position that will be described in more detail below . more particularly , a plurality of u - shaped brackets 20 are fixed to the attachment plate 14 . the upwardly - extending portions of each bracket 20 have a pair of aligned holes , and a bolt 22 passes through both the bracket 20 and the corresponding arm assembly 18 , acting as a generally horizontal axis of rotation and mounting the arm assembly 18 for rotation on the attachment plate 14 . as those of skill in the art will appreciate , positioned as they are on the upper surface of the attachment plate 14 , the brackets 20 provide an angular range of motion of approximately 90 ° to the extending arm assemblies 18 . in other embodiments , rather than being attached to the upper surface of the attachment plate 14 , the brackets 20 may be welded or otherwise fixed to the circumferential side edge of the attachment plate 14 , which would provide an angular range of motion of 180 ° or greater for the extending arm assemblies 18 . fixing the arm assemblies 18 to the side edge of the attachment plate 14 may also allow a reduction in the diameter of the attachment plate 14 , for example , from about 18 inches to about 16 inches . in the illustrated embodiment , there are twelve arm assemblies 18 mounted on the attachment plate 14 , although there may be more or fewer arm assemblies 18 in other embodiments . as will be described below in more detail , each of the arm assemblies 18 is a telescoping structure that can take essentially any length within a defined range . in the illustrated embodiment , the fully extended length of an arm assembly 18 may be slightly less than four feet , although any lengths , and particularly any lengths that work with a bale ring , may be used . the minimum length of an arm assembly 18 in the illustrated embodiment may be slightly more than two feet . the arm assemblies 18 telescope , and each may be adjusted to its own arbitrary length , irrespective of the lengths of the other arm assemblies 18 . fig4 is a cross - sectional view of the feed support 10 taken through line 4 - 4 of fig2 , illustrating , among other features , the internal arrangement of two of the arm assemblies 18 . as shown in fig4 , each arm assembly 18 includes a primary arm section 24 and a secondary arm section 26 . both the primary and secondary arm sections 24 , 26 are comprised of square tubing , and the two sections 24 , 26 are dimensioned such that the secondary arm sections 26 fit and slide within the primary arm sections 24 , giving the arm assemblies 18 as a whole the ability to telescope . while the secondary arm sections 26 can slide , the primary arm sections 24 , for their part , are mounted for rotation on the attachment plate 14 by the brackets 20 and bolts 22 , as was described above . although the arm assemblies 24 , 26 are comprised of square tubing , those components may be comprised of round tubing , rectangular tubing , or tubing of other shapes in other embodiments . additionally , although the secondary arm sections 26 rest within the primary arm sections 24 in the illustrated embodiment , that need not be the case in all embodiments . instead , the primary arm sections 24 may rest within the secondary arm sections 26 . in other words , it is not critical which of the two arm sections 24 , 26 is male and which is female . fig5 is a perspective view of the feed support 10 with its arm assemblies 18 in a folded , stored configuration . in the folded , stored configuration illustrated in fig5 , each of the arm assemblies is folded upward 90 ° with respect to the position illustrated in fig4 , such that the arm assemblies 18 extend perpendicular to the attachment plate 14 . additionally , the secondary arm sections 26 are fully retracted within the primary arm sections 24 . the folded , stored configuration of the feed support 10 allows the feed support to be easily shipped and easily handled prior to installation and use . it also allows the feed support 10 to be easily removed from one bale ring , if necessary , and placed in another . in some embodiments , the feed support 10 may include structure to retain the arm assemblies 18 in the folded , stored configuration or the extended configuration shown in fig4 . for example , the arm assemblies 18 may include additional sets of holes through which pins can be inserted to retain the primary and secondary arm sections 24 , 26 in the extended and retracted positions . fig6 is a perspective view of a feed support 10 as installed within a bale ring 50 . the feed support 10 is situated within the bale ring 50 such that its support member 12 is at approximately the center of the bale ring 50 . the height of the support member 12 gives the attachment plate 14 and arm assemblies 18 a height off the ground of approximately 6 - 12 inches when the feed support 10 is installed . as shown in fig6 , the arm assemblies 18 are extended such that the ends 28 of the secondary arms 26 are connected to upright members 52 of the bale ring 50 . because of the telescoping nature of the arm assemblies 18 , the feed support 10 may be used with bale rings 50 having a variety of different diameters . as shown in fig6 , the upright members 52 of the bale ring 50 carry engaging structure to engage the ends 28 of the secondary arm section 26 . in the illustrated embodiment , the engaging structure comprises a u - shaped engaging bracket 54 mounted on each upright member 52 . a bolt 56 passes through aligned holes in the brackets and in the secondary arm sections to secure the arm assemblies 18 to the bale ring 50 . the attachment of the arm assemblies 18 to the bale ring 50 distributes the load of any feed , such as a bale of hay , that may be supported by the arm assemblies 18 , and may help to prevent the arm assemblies 18 from bending under what would otherwise be a cantilevered load . however , it should be understood that in some embodiments , attachment of the arm assemblies 18 to the bale ring 50 may be optional . whether the arm assemblies 18 are attached to the bale ring 50 or not will generally depend on the weight of feed that is to be supported by the arm assemblies 18 , the mechanical properties and load carrying capacity of the arm assemblies 18 , the structural integrity and load carrying capacity of the bale ring 50 , and other conventional factors . moreover , when the arm assemblies 18 are attached to the bale ring 50 , that attachment may be made in any way ; the engaging structures 54 , 56 illustrated in fig6 are but one example . in some embodiments , for example , the secondary arm sections 26 may have forked ends similar to the brackets 54 , such that the arm assemblies 18 may be attached to the bale ring 50 simply by drilling appropriately located holes in the upright members 52 and inserting a bolt or pin through the aligned forked ends and the corresponding upright members . more generally , when cooperating engaging structures are used to attach the arm assemblies 18 to the bale ring 50 , either piece 18 , 50 may carry the male engaging structure and either piece 18 , 50 may carry the female engaging structure . which piece 18 , 50 carries which structure may depend , in part , on whether it is possible or convenient to modify the bale ring 50 ; if it is not possible or convenient to modify the bale ring 50 to any great extent , then the more complex engaging structure may be carried by , or form a part of , the ends 28 of the secondary arm structures 26 . of course , where attachment of the arm assemblies 18 and the bale ring 50 is desired , that attachment may be by any means known in the art ; the structures illustrated in fig6 and described above are but a few examples . in other embodiments , the arm assemblies 18 may be attached to the bale ring 50 by clamping , welding , or any other means . additionally , the feed support 10 and its arm assemblies 18 may be attached to any part of the bale ring 50 ; for example , the arm assemblies may be attached to one of the circumferential rings of the bale ring 50 , instead of the upright members 52 . once installed as shown in fig6 , structures may be laid over the extended arm assemblies 18 so as to provide a more contiguous support surface for feed . for example , sheet metal , plastic panels , or chain mesh may be laid over the installed feed support 10 and its arm assemblies 18 to ensure that feed can be supported between the arm assemblies 18 . any material laid over the arm assemblies 18 may be secured to the arm assemblies , to the attachment plate , or to both structures by clamping , bolting , tying , or any other conventional technique . fig7 is a top plan view of a feed support 10 installed in a bale ring 100 , illustrating an advantage of the feed support 10 . specifically , the bale ring 100 is dented out - of - round on one side . however , the feed support 10 can still fit within and be used inside of the bale ring 100 . in order to do so , one simply retracts the secondary arm sections 26 to accommodate the new position of the sidewall of the bale ring 100 , as shown in fig6 . thus , the three arm assemblies 18 that extend into the dented portion of the bale ring 100 are simply shorter than the other arm assemblies 18 . in fig1 - 7 the feed support 10 was used in a fixed position within a bale ring . however , in other embodiments of the invention , feed supports may be used as bale ring movers . fig8 is a side elevational view of a bale ring mover - feed support , generally indicated at 200 , according to another embodiment . as compared with the feed support 10 , the bale ring mover - feed support 200 has a hollow support member 202 and an attachment plate 204 with an opening 206 . the hollow support member 202 and attachment plate 204 with an opening 206 allow a tractor 208 with a hay spear 210 to pick up the bale ring mover - feed support 200 . as shown in the view of fig8 , the bale ring mover - feed support 200 is mounted within a bale ring 212 , and the tractor 208 has used its spear 210 to pick up the assembly 200 , 212 . in practice , the assembly 200 , 212 may be picked up on its side , oriented vertically as in fig1 - 7 , or in any other position that can be accessed by the tractor 208 and its hay spear 210 . any hay or other animal feed that may be present within the bale ring 212 may also be picked up and moved with the assembly 200 , 212 . in some embodiments , an entire bale of hay could be positioned within the assembly 200 , 212 and picked up by the tractor 208 along with the assembly 200 , 212 , although in most embodiments , operators will pick up only the empty or substantially empty assembly 200 , 212 as a means of relocating the bale ring 212 . fig9 is a top plan view of another embodiment of a feed support , generally indicated at 300 . in the feed support 300 , a plurality of arm assemblies 302 are attached to the circumferential side edge 304 of the attachment plate 306 by u - brackets 308 , as was described briefly above . additionally , the attachment plate 306 has a central opening 310 . in the above description , certain dimensions and exemplary materials for the components have been given . the height , width , diameter , thickness , materials , and mechanical properties of the various components may differ from embodiment to embodiment and installation to installation . generally , the materials of which a component is made and its dimensions will depend on factors such as the weight of the feed that is to be supported , the type of animals that are to feed , the strength , rigidity , and other properties of the bale ring with which the feed support 10 or bale ring mover - feed support 200 is to be used , and any other conventional factors . while the invention has been described with respect to certain embodiments , the description is intended to be exemplary , rather than limiting . modifications and changes may be made within the scope of the invention , which is defined by the appended claims .