Sidney Model 32 lathe apron cross feed handle

neilert · Nov 24, 2019

I have a 1952 Sidney model 32 lathe, and the cross feed handle that engages the hirth clutch will not stay engaged. Does anyone have a photo of their handle that works properly?

The problem could be the hirth serrated clutch, bearing clearances, handle adjustment, or wear on the handle itself that is causing the problem. The manual shows a sharp corner for a cam action when pulled, but mine has a radius.

The handle in question is part number LW-189.

Thank you!

Neil

johnoder · Nov 25, 2019

The manual shows

Needs sharing. Did you know there is zero Sidney Lathe info on Vintage Machinery?

Right now it appears you are the only one able to see that info.

neilert · Nov 25, 2019

johnoder said:
Needs sharing. Did you know there is zero Sidney Lathe info on Vintage Machinery?

Right now it appears you are the only one able to see that info.

I would be happy to scan and upload it. The manual is in great shape and has drawings of nearly every assembly.

johnoder · Nov 25, 2019

Be a great addition. Here is VM's web page as to contributing pubs

Scroll down to the 4th section

VintageMachinery.org | Welcome

neilert · Nov 25, 2019

Here are some diagrams of the lever handle.

neilert · Nov 25, 2019

I'm wondering if this is enough wear on the handle to make it so it doesn't stay engaged. I may go ahead and add some material to create a sharp edge to see if that is the problem.

johnoder · Nov 25, 2019

I wonder if the pins are sheared one side or the other?

Before making it more "pointy", how about a .020" feeler each side to see if that does anything?

neilert · Nov 25, 2019

I have the assembly on the workbench, and there isn't anything sheared. Really appreciate your help! I will try the feeler idea to see if it locks the cam in the engaged position. This is a newly acquired lathe and a unique clutch design, so I'm not quite sure how it is supposed to work.

I'll try a few things and report back.

Thank you!

Mike Hill · Nov 25, 2019

I have a model 32, I had to adjust my handles, it’s been awhile but it seems if I remember right there is a exposed Allen screw that you adjust externally to get firmer engagement.

neilert · Nov 25, 2019

Mike Hill said:
I have a model 32, I had to adjust my handles, it’s been awhile but it seems if I remember right there is a exposed Allen screw that you adjust externally to get firmer engagement.

Yes, mine has the allen set screw as well. I tried every adjustment, but still no luck.
Thank you- Neil

neilert · Nov 25, 2019

Fixed.
I ended up doing a CAD drawing to virtually rotate the lever on it’s pin. The drawing showed that the slight radius was enough to make it so the cam action couldn’t lock into place because there was no edge off of the axis of the pin. In the end I should have just trusted the drawing in the manual. Removing about 1/32” from the faces to create a sharp angled corner worked. Now the lever snaps into place and holds tightly. Hope this helps others with Sidney lathes.

svs · Nov 25, 2019

Glad it worked. I figured you had deeper issues.

I wonder how many cycles were required to round that cam off?

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