in fig1 the primate education device is illustrated generally at 10 . container means 12 is attachable to a fixture of a primate environment such as to either side of meshed cage wall 14 by means of fasteners 16 . rear panel 18 of the container means rests adjacent cage wall 14 , and directly opposes front panel 20 to which it is connected by means of side connecting strips 22 and 24 and top and bottom 26 and 28 , respectively ( see fig3 ). the interior 30 of the container means is provided with a variable maze structure 32 manually programmable to varying degrees of difficulty as will be described . food morsel 34 or other object such as a &# 34 ; token &# 34 ; to further reward may be manipulated by primate 36 through frontal access ports 38 along continuous pathway 40 . the device incorporates a means for instructing the primate as to the location of pathway 40 by virtue of rear access ports 44 substantially directly opposing frontal access ports 38 . thus , a trainer outside the primate cage may manipulate food 34 along continuous pathway 40 through rear access ports 44 so that primate 36 may observe the location of that pathway . turning now to the remaining figures , movable connecting stops 46 ( horizontal ) and 48 ( vertical ) define continuous pathway 40 . because these stops are movable within the container means , a variety of continuous pathways -- i . e ., &# 34 ; maze &# 34 ; structures -- may be created . as best seen in fig2 each of movable stops 46 and 48 are provided with pegs 50 adapted to fit snugly within recesses 52 in front panel 20 . frontal access ports 38 are smaller than food morsel 34 , so that primate 36 may not remove the food without successfully &# 34 ; completing &# 34 ; the maze , i . e . moving the food through the maze to exit port 54 , which is larger than food morsel 34 . when the device is attached to a meshed wall , care should be taken that bars of the mesh do not block access to exit port 54 . rear access ports 44 are also smaller than food morsel 34 , but are large enough to allow external maneuvering of the food within the maze with a rod or similar structure . fig2 also illustrates drainage port 56 located within bottom 28 . drainage port 56 allows for automatic drainage of any fluid which may accumulate within the device during cleaning . fig3 illustrates the mechanism by which food 34 is placed within container means 12 for manipulation through continuous pathway 40 by primate 36 . upper and lower pivotable shelves 60 and 62 are affixed at one end to pivot pins 64 and 66 , respectively , while free ends 68 and 70 of the shelves rest on upper and lower supports 72 and 74 . when food is to be placed within container means 12 at the start of the maze -- at the top of continuous pathway 40 , either or both of shelves 60 and 62 may be pivoted upwards to allow placement of the food in channels 76 , 78 or 80 . in the embodiment shown , fixed self 58 may not be pivoted upward . in an alternative embodiment , shelves 58 , 60 and 62 may be replaced partially or entirely with additional movable stops 46 and 48 to expand the maze structure . fig4 illustrates how the inventive device is assembled . as may be seen , the device is structured so as to be assembled and disassembled quickly and easily . rear panel 18 of the container means slides into place by means of vertical grooves 82 and 84 on side connecting strips 22 and 24 . similarly , top 26 slides into horizontal grooves 86 and 88 located at the upper ends 90 and 92 of the side strips 22 and 24 . handle 87 facilitates movement of top 26 . because rear panel 18 is actually somewhat shorter than front panel 20 ( see fig3 ), top 26 may be removed without first removing rear panel 18 . thus , food may be placed within channels 76 , 78 or 80 without substantial disassembly of the device . front panel 20 is fastened in place , as noted above , by fasteners 16 , which may be in the nature of bolts , hooks , brackets , and the like . preferred fasteners include j - bolts and cable ties . fasteners 16 fit through openings 94 at each of the four corners of front panel 20 and attach the device to a fixture such as cage wall 14 . openings 98 of front panel 20 are positioned so as to be aligned with elongated apertures 96 within side panels 22 and 24 , thus allowing a through path for secondary fasteners 100 . after placement of food morsel 34 within container means 12 , a trainer outside the primate cage may maneuver the food through the continuous pathway 40 in order to teach primate 36 the location of that pathway . after the primate learns the correct path through a particular maze , i . e . successfully retrieves the food morsel from exit port 54 , the trainer may remove rear panel 18 as described above , and create a different and , if desired , more difficult maze structure by rearranging movable stops 46 and 48 . at least two dozen different maze configurations may be obtained with the instant device . while the invention has been described in conjunction with the preferred specific embodiments thereof , it will be understood that this description is intended to illustrate and not limit the scope of the invention , which is defined by the appended claims .
an educational device for enriching the environment of a contained primate , including a variable and programmable maze as well as a mechanism whereby the primate may be instructed as to the location of the correct pathway through the maze .