detail as previously mentioned bracket 84 is roughly box shaped and configured to contain reel assembly 60 as seen in fig3 5 on one side of bracket 84 corner pieces 85 and 86 are coupled to slide members 110 and 111 respectively likewise corner members 87 and 88 are coupled to slide members 112 and 113 respectively opposing side members 140 and 142 have deep u shaped troughs 144 and 146 cut therein to enable engagement with adjacent pool cover assembly components a plurality of guide members 148 are mounted within bracket 84 to guide the movement of reel assembly 60 bracket 84 may be sized to stand on the floor of the pool cover box not shown or may be supported by conventional support members not shown disposed on the floor and or the walls of the pool cover box bracket 90 is essentially identical to bracket 84 except that bracket 90 may be formed without guide members 148 bracket 90 supports motor 56 which is mounted thereon by suitable means looking now at fig8 the distal end 160 of the wind up tube 163 is shown rail mounting structures 164 and 166 are attached to opposing sides 167 and 168 of pool cover box 54 rail mounting structures 164 and 166 have an inverted l shape which includes support members 170 and 180 mounted to opposing sides 167 and 168 of the box 54 channel members 172 and 182 extend at right angles to support members 170 and 180 toward the wind up tube 163 a bracket member 190 supports the yoke 192 of circular end 194 in a trough 196 bracket member 190 has corner members 197 and 198 that are coupled by slide members not shown.