If you look closely the cable wire is passing through a hole in the linkage. As the foot feed is pressed the linkage slides up and down the wire without moving it. The clamp on the end Bill referred to is called a wire or cable stop. It simply clamps to the wire to keep it from pulling through the hole in the linkage when you pull the knob. The set up is a bit more obvious on my '38.

Last edited by Tiny; 02/13/2011 10:01 PM.

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Name your dog Naked so you can walk Naked in the park.