metal rod 22 the front edge 46 of slot 40 is so positioned that it forms an angle of 25 u00b0 with the radius r similarly the edges 44 and 46 of the slot 42 form the same 40 u00b0 and 25 u00b0 angles with the radius r of circular socket 36 the slot edges 44 and 46 thus serve as stops to limit pivotal movement of the slats 20 relative to the rods 22 in both directions to the angular extents described above fig3 shows in phantom at 20 39 the angular position of the uppermost slat 20 when the rolling gate 10 is rolled up to its elevated position the slat is in engagement with the rear edge 44 of the upper slot 40 and has turned through an angle of approximately 40 u00b0 from its original position in which it was axially aligned with the longitudinal axis of the attached rod 22 the position of the rear edges 44 of the slots 40 and 42 therefore provide a sufficient degree of flexibility to the rolling gate 10 to enable the latter to bend into rolled up form when raised to its elevated position the front edge 46 of the slots 40 and 42 which permits a smaller degree of forward pivotal movement of.