Abstract: A hinge element for toy building sets which is a pair of box-shaped toy building blocks hingedly interconnected by means of a tubular bush in one corner of one of the blocks and a complementary pivot pin in one corner of the other block, the arrangement of the bush and the pivot relatively to the blocks being such that, in the position wherein the pivot is rotatably mounted in the bush, the axis x of the bush and the axis y of the pivot both coincide with a corner edge in each block.The two blocks: bush block 10a and pivot block 10b are provided with primary projections 14 extending outwardly from their bottom faces 13 and secondary projections 15 arranged in the cavity 16 of the blocks providing for detachable engagement with corresponding projections (coupling studs) of adjacent toy building blocks pertaining to the toy building set.

Abstract: A toy figure, adapted to be detachably mounted on a base plate pertaining to a toy building set and provided with coupling studs, is provided with a leg assembly comprising a pair of identical leg elements having substantially plane rear faces (calves). Recesses comprising lengthwise extending channels or pairs of holes are provided in the rear faces of the leg elements, and the width of these recesses is substantially equal to the width of the studs of the base plate. The recesses are symmetrical with respect to the lengthwise extending median plane of the leg elements and, in the position of the leg elements wherein their rear faces coincide, the distance between the axes of symmetry of the recesses is equal to the module m of the building set.