Abstract: The topological analysis of chiral molecular models led to the development of a general procedure for specifying chirality. The application of this procedure to organic chemical configurations, as described earlier (1956 and before), is retained in this paper, but modified and redefined with regard to certain structure types. These changes are largely based on experience gained at the Beilstein Institute and elsewhere since 1956. The procedure is now extended to allow the treatment of both organic chemical conformations and inorganic chemical configurations up to six ligand atoms. The paper discusses the issues that arise when transferring the symbols obtained from the model's chirality specification to the nomenclature, paying particular attention to the combination of chirality symbols obtained from the general procedure with those obtained from special procedures and with trivial nomenclature systems.

Abstract: A steering column clamping mechanism has bolt links interconnecting substantially parallel spaced-apart plates which basically form a rectangle and are so linked one to another that the rectangle can assume an orientation defining a non-rectangular parallelogram or lozenge. One of the connecting bolts is mounted in a bracket fixed to a chassis of a vehicle, the bracket having a depending reaction plate against which an actuating member can be urged to push the plate member away from the reaction member. Through the linkage, this causes the other plate member to compress onto a steering column tube member to clamp it between that plate and the opposite side of the reaction plate.