conveyor 33 34 the same is true for 34 stopping the outward movement of clamps 34 the outwardly moving clamps m 1 and m 2 are stopped automatically by disabling block 224 in fig2 and enabling blocks 239 and 401 via nor gates 238 and 400 respectively to apply the brakes for the m 1 and m 2 cables 115 and 111 in fig5 when the flatwork has been blown onto the conveyor there is a short adjustable pause in time delay 264 before line 268m goes high the signal path is line 266 or gate 267 line 268m fig2 line 268 fig2 or gate 269 line 290 and flip flop 220 resetting it flip flop 220 actuates the 34 in left 34 block 272 and the 34 in right 34 block 230 through nor gates 271 and 246 in the same manner as described in detail for the left channel the 34 in left 34 block 272 and the 34 in right 34 block 230 in fig2 represent schematically the reverse clutches for the cables 111 and 115 in fig5 consequently the direction of these cables is reversed and both clamps m 1 and m 2 are moved back toward.