of the order of 180 u00b0 the joint includes an annular ring 32 fixed to the elbow 26 and overlapping the confronting end of the elbow 28 and a radial flange 34 extending from the end of the ring 32 into an annular slot 36 in the elbow 28 at the end of the elbow 28 opposite the rotary joint 30 is a shroud 38 that is connected to a sweep housing 40 through the use of two diametrically opposed pivot pins 41 the feed grain through the two elbows 26 and 28 from the sweep screw to the main auger screw 20 there is a flexible auger screw section 42 that connects at one end to the screw 20 and at the opposite end to a sweep screw 44 that extends the length of the sweep housing 40 at the outer end of the housing 40 is a sweep transporting mechanism 46 that engages the floor and causes the sweep to rotate about the rotary joint 30 to facilitate this movement the elbow 28 is supported on a stud 48 coaxial with the rotary joint 30 the configuration of the flexible screw section 42 is illustrated most clearly at fig3 and 4 the screw has a flexible shaft 50 that is composed of a four braid hydraulic high pressure hose 52 surrounding a smaller two braid hydraulic high pressure hose 54 which in turn.