On Tue, 14 Feb 2006 09:13:27 -0400, "jtaylor"
wrote:


"Gunner" wrote in message
.. .
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.


Do that have just one bushing at one end of the worm, or is the bush really
a pair, one each end, connected along the back side of the worm (so they'll
turn together)?

That..I honestly dont know. Ive never had one apart.

Gunner



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