Hi all.......again,

Thanks for all the answers to my post. I do have the book recommended,
'How to Run a Lathe'. I should have looked in there for nomenclature
first.
The part that is missing is shown on page 8 and is designated Eccentric
shaft, Quill gear, bushing, and a smaller gear that goes on the other end
of the shaft. The Compound Rest Top is the problem I am having trouble
removing. There is the nut for the screw that controls the feed for the
tool post in the base and I don't know how to remove it. I can see the
bottom of it underneath the base and there is no screwdriver slot in it. I
think it is called the cross feed nut??? There is no screw on the top that
holds it.
The lathe is a 9" x 4.5 feet according to the brass plate on the end.
The apron has a wheel for travel and a lever for engaging the lead screw.
There is no 'gear box' or any bells or whistles, this is a pretty basic
machine....good to learn on.
I am really stuck on the removal of the compound rest top. I am
thinking about a bit of heat from a propane torch but am reluctant because
of all the cast iron and the expansion issues therein. It looks like when
everything is clean and bright that the re-assembly would entail simply
pushing the part (cross feed nut) into place with a finger from underneath
while engaging the cross feed screw with your other hand while holding the
nut in place. In this less than perfect world I have to figure how to get
that puppy out first. More suggestions and advise gladly welcomed.
Sid Gammon

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"Sid Gammon" wrote
I am really stuck on the removal of the compound rest top. I am
thinking about a bit of heat from a propane torch but am reluctant
because
of all the cast iron and the expansion issues therein. It looks like
when
everything is clean and bright that the re-assembly would entail
simply
pushing the part (cross feed nut) into place with a finger from
underneath
while engaging the cross feed screw with your other hand while
holding the
nut in place. In this less than perfect world I have to figure how
to get
that puppy out first. More suggestions and advise gladly welcomed.
Sid Gammon

On my 1965 SB the compound feed screw comes out by unscrewing its
bearing assembly, the stationary disk with the dial index pointer.
http://www.cams-club.org/meeting-history/2008-03-25/Tex_R's_Screw&Dial2.jpg

With the feed screw out and the gibs loosened it disassembled easily
to clean up the worn dovetails.
jsw

On 2014-03-06, Sid Gammon wrote:
Hi all.......again,

Thanks for all the answers to my post. I do have the book recommended,
'How to Run a Lathe'. I should have looked in there for nomenclature
first.

O.K. Which edition? I've got two -- the 1950 reprint, and an
original 1966, and they both don't have that information on that page. :-)

The part that is missing is shown on page 8 and is designated Eccentric
shaft, Quill gear, bushing, and a smaller gear that goes on the other end
of the shaft.

O.K. That is is the back gears for sure. The "eccentric shaft"
is what enables the back gear to move into or out of mesh.

The Compound Rest Top is the problem I am having trouble
removing. There is the nut for the screw that controls the feed for the
tool post in the base and I don't know how to remove it. I can see the
bottom of it underneath the base and there is no screwdriver slot in it. I
think it is called the cross feed nut??? There is no screw on the top that
holds it.

Cross feed nut would be a different one from the compound nut.
Since my machine is a Clausing, and a lot of things were done
differently by different manufacturers, to get around patents, I'm not
sure how well they map together.

However -- the cross-slide nut in mine is a T-shaped lump of
bronze made of cylindrical sections. The leadscrew goes through the
length of the top bar of the 'T', and the vertical part is turned to a
diameter which will fit into a hole bored through the cross slide. That
is held into the cross slide by an Allen head set screw put in from the
Headstock side of the cross slide. You first remove two screws which
hold the bearing of the cross-feed leadscrew to the end of the
cross-slide, and unscrew the (left-hand thread) leadscrew. Then you
slide the cross-slide towards the back, and you can loosen the setscrew
and it will drop out into your hand.

As for the compound -- I had to go out and look at it to be
su

1) Unscrew the double crank handle from the end of the leadscrew
using an open end wrench to hold the locknut.

2) Unscrew the locknut.

3) Loosen the set screw in the nut (which looks like a cylinder
with two diameters along its length) and unscrew it. (There is
a lead shot under the setscrew to hold without deforming the
threads.) The movable dial rotates with this held to it by the
locking thumbscrew and a small brass plug under the thumbscrew.

4) Unscrew the bearing with a pin spanner. (There are two holes in
the face for the pin spanner. (First, loosen the set screw on
the side which locks it in place.

5) Unscrew and withdraw the leadscrew (Right-hand thread on this
one, I believe.)

6) Under the leadscrew, in the body you will see a long Allen-
head setscrew. Loosen this, and the nut should simply drop out
the bottom of the compound body.

To see what this looks like on the Clausing, go to my web site:

http://www.d-and-d.com/misc/MANUALS/CLAUSING/index.html

and click on the link for the lathe manual to download and save it.

The breakdown drawing of the cross-slide and compound is on
printed page 19, which is PDF page 39 (there are a lot of pages with
similar numbers.) The part you want is at the top of the page.

Hopefully, you can find a similar set of drawings of your lathe,
to know how to take it apart.

The lathe is a 9" x 4.5 feet according to the brass plate on the end.
The apron has a wheel for travel and a lever for engaging the lead screw.
There is no 'gear box' or any bells or whistles, this is a pretty basic
machine....good to learn on.

Yes -- except that you will have habits to unlearn when you get
a nicer one. In particular -- you will be in the habit of using the
leadscrew and half nuts for "power feed" as well as for threading. This
is bad overall, because it wears the leadscrew and reduces accuracy of
threading over time. The power feed is taken from the longitudinal
groove on the leadscrew instead of the faces of the Acme threads (and
produces a much slower feed, and thus finer finish for a given set of
gears. It is even slower for the power cross-feed.

I am really stuck on the removal of the compound rest top. I am
thinking about a bit of heat from a propane torch but am reluctant because
of all the cast iron and the expansion issues therein. It looks like when
everything is clean and bright that the re-assembly would entail simply
pushing the part (cross feed nut) into place with a finger from underneath
while engaging the cross feed screw with your other hand while holding the
nut in place. In this less than perfect world I have to figure how to get
that puppy out first. More suggestions and advise gladly welcomed.

I suspect that there is a setscrew holding it in -- but where it
hides remains to be seen.

Good Luck,
DoN.

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