with hook 56 and rod 16a caught bar 52 is swung counterclockwise toward the position shown for it in fig2 it will be noted that with bar 52 hook 56 and pivot connections 54 58 arranged as shown mechanism 44 functions with what is known as 34 toggle 34 or 34 over center 34 action similar operations are of course performed with the other three latching mechanisms as has previously been noted apparatus 10 is now in a condition to function as a storage transport device for a drum set under this circumstance frames 40 42 provide the requisite structural rigidity in its form as a storage carrier for a drum set the apparatus may be rolled over the ground on its supporting castors or it may be lifted through handles such as handles 41 43 to return the apparatus for functioning as a performance platform it is of course an extremely simple matter quickly to release the various latch mechanisms to permit lowering of the side panels turning now to fig5 another embodiment of the invention is shown being viewed from the rear the second proposed embodiment is essentially the same as that previously described with modifications as follow the rear frame is omitted a rear side panel or wing has been added rear handles have been mounted on wheel housings adjacent the.