The cross-spring pivot as a constructional element

  • J. A. Haringx


This paper deals with the behaviour of the so-called cross-spring pivot, a flexible element connecting two members of a construction and consisting of two flat springs that cross each other at an angle of, for instance, 90 degrees. To a first approximation the pivot point coincides with the point of “intersection” of the two springs. By an elementary calculation we find the rigidity of the cross-spring pivot to depend to a large extent upon the size and the direction of the force to be transmitted. A second calculation gives us the shift of the pivot point occurring for large angles of deflection, though for a pure bending moment only. A survey of the results is given at the end of the paper.


Deflection Angle Large Deflection Pivot Point Intersection Angle Spring Length 
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  1. 1).
    Young, W. E., An investigation of the cross-spring pivot, J. appl. Mech.11 (1944) A 113.Google Scholar
  2. 2).
    For the more general considerations seeA. van Wijngaarden, Large distortions of circular rings and straight rods I and II, Proc. roy. Acad., Amsterdam,49 (1946) 648. The author of the present article has adapted his method of calculation as far as possible to that of Van Wijngaarden.Google Scholar

Copyright information

© The Hague Martinus Nijhoff 1949

Authors and Affiliations

  • J. A. Haringx
    • 1
  1. 1.Philips Research LaboratoriesEindhovenNetherlands

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