The clip type hadset allows you to either use a stem without an expander or have the security of two binding systems, one on the upper part of the quill and the other the the usual expander.
Joseph Bender-Zanoni
Great Notch, NJ
> Charles;
> The upper steerer tube clamp goes by the name "Clip Type head
> set" Used until mid 50's especially on track bikes in the U.K. I have
> one of the last used as new fitting on a 1963 Hetchin's Magnum Bonum.
> Keith Hellon Libertyville, Illinois