consisting of links in rhomb-form

Man-operated mechanisms for operating wings, including those which also operate the fastening > for wings in general, e.g. fanlights > with longitudinally-moving bars guided, e.g. by pivoted links, in or on the frame > Mechanisms by which the bar shifts the wing > shifting the wing by pivotally-connected members moving in a plane parallel to the pivot axis of the wing > consisting of links in rhomb form

Man-operated mechanisms for operating wings, including those which also operate the fastening (connecting mechanisms for a plurality of wings E05F17/00) > for wings in general, e.g. fanlights (E05F11/36 takes precedence; for windows to be lowered vertically E05F11/38; for doors E05F11/54) > with longitudinally-moving bars guided, e.g. by pivoted links, in or on the frame > Mechanisms by which the bar shifts the wing > shifting the wing by pivotally-connected members > consisting of links in rhomb-form