On Mon, 13 Feb 2006 10:39:02 -0400, "jtaylor"
wrote:

In my head I have a kind of picture how a rotary table might be made.

You have a base, with a central pivot (could be bored for a taper). Around
the pivot is a gear & the table, driven by a worm.

Some of these tables are advertised to have a method by which the table can
be decoupled from the gear, to allow quick rotation without turning the
worm. I have been turning this picture around and around in my head and
cannot figure out how they do this.

Someone tell me or point to a drawing, please...

My several have the worm coming through a bushing a smidge off center,
and when I release the bushing lock and turn it..it actually pulls the
worm away from the gear inside the base. Very quick.

Gunner



"A prudent man foresees the difficulties ahead and prepares for them;
the simpleton goes blindly on and suffers the consequences."
- Proverbs 22:3