DETAILED DESCRIPTION OF THE INVENTION Referring to the drawings and particularly to FIGS. 1 through 4, there is illustrated a preferred embodiment of a yarn accumulator 10 mounted in a frame structure 11 having a base 12 above which base are sheet metal housings 13 at each frame end 14 with a hinged closure panel 15 for providing access to the counterbalance weight sections 16 at each frame end.