of motion 23 which improves its ability to retain the materials in the debris pocket 29 in fig7 a diagrammatic illustration of a section of a modified endless sieve belt is depicted the crescent shaped sieving panels 2 2 u2032 2 u2033 are each connected by a rectilinear connecting section 38 between the convex 26 and concave 27 sections in such a way that the circles whose sections form both the convex 26 and concave 27 outer contours do not intersect the connecting elements 3 are linked together and are also connected on the one hand to a sieving panel 2 at the midpoint of the first circle which forms the convex section 26 of the outer contour of a sieving panel 2 on the other hand they may be displaced along the convex section 26 u2032 of the outer contour of the adjacent sieving panel 2 u2032 and are connected to the adjacent sieving panel 2 u2032 at the midpoint of its first circle which forms the convex section 26 u2032 of its outer contour this makes it possible for the sieving panels 2 2 u2032 2 u2033 to be deflected without opening a gap between them in fig7 the sectional frame and the sieving meshwork are only shown in sieving panel 21 u2032 and any guide rollers 7 a 7 b or support rollers 11 that may be present are not depicted fig8 shows a diagrammatic side view of an endless sieve belt 1 according to fig7 in which the connectors.