Abstract: A toy building set comprising a plurality of building elements which each are provided with hinge parts, first and second types of hinge parts being shaped complementarily in such a manner that the hinge parts on two building elements may be interconnected releasably so that they form a hinge link between the building elements. The first type of hinge parts is provided with a toothing arranged at a specific distance from the common hinge axis, and the second type of hinge parts comprises a first group which is provided with a toothing arranged at the specific distance from the common hinge axis and a second group of hinge parts which is not provided with such a toothing, said toothings on the first type of hinge parts and on the first group of the second type of hinge parts being directed oppositely to each other in such a manner that they engage each other when the hinge parts are interconnected.

Abstract: A toy building set comprising a plurality of building elements which each are provided with hinge parts, a first type of hinge parts comprising a substantially cylindrical rod-shaped shaft part of a building element, a second type of hinge parts comprising a claw device consisting of two elastic fingers extending outwards from a building element at a distance from each other, so that the two elastic fingers between them form a track which is narrowed at the distal end of the fingers with respect to the building element, so that the rod-shaped shaft part may be pressed into the track through the narrowed part of the track, said hinge parts additionally comprising a third type of hinge parts being provided with a shaft stud which has an external diameter corresponding to the thickness of the rod-shaped shaft part.

Abstract: A grab for a toy crane is provided with two two-armed levers having a common axis of rotation. Portions of the levers overlap each other at the axis of rotation about which the levers are mutually hinged at at least two places. Each lever has a first arm and a second arm which are mutually contiguous solely on one side of a central plane of the grab perpendicular to the axis of rotation.