Advice on a Recently Purchased Claes 8346-30 Patcher Sewing Machine

[Constabulary]

Here are some pictures of my 8346-30.

BTW when you look at the data plate the number below "BAUJAHR" is the year when it was made.

[Constabulary]

some more

Hope the pics help setting up yours. Mine still has thee original clutch motor but your seem to have a modern servo motor alreday. If you need more detailed pictures let me know.

[shoepatcher]

You have lots of parts.  Need a servo motor for it.  Does the engraved line on the front of the base say 8345-6 or 8346-6?   It has an early Claes cast iron stand almost like

the Pfaff Metro Spezial that was a Claes in everything but name.  Claes sold machines to Pfaff that Pfaff out their name on it.   What questions do you have on the machine?

glenn

[ya2daup]

On 7/15/2025 at 1:33 PM, friquant said:

Forgot that you have two hand wheels! Or one giant handwheel and two motor pulleys (one on the motor, one one the patcher). This is going to mess up my terminology notes for sure 🤷‍♂️

From your video, I'm not sure if that lateral motion is a problem, a feature, or neither. Is there anything along the main shaft that looks like it's intended to impede this lateral motion?

 

Ha! Sorry about that, I think you got the picture but I'm referring to the motor pulley on the patcher. I've spent some time looking it over, along with the engineering diagram I have (in German) It appears that everything on that shaft is pinned and has a sew screw so I don't see any opportunity for adjustment. I did pop the pin on the aformentioned pulley and tapped it in further which does take up the slop but without the pin that's not a long term solution. At this point I don't believe there is any solution within the machines available adjustments but the "clunking" is going to get annoying. So I think I'm going to pull off the pulley and insert a couple nylon washers. Not so much that it's tight and binding but enough so that it has minimal travel

On 7/16/2025 at 12:48 AM, Constabulary said:

Here are some pictures of my 8346-30.

BTW when you look at the data plate the number below "BAUJAHR" is the year when it was made.

 

Thank you for all the pictures! It really helped identify some of that parts and what I should be considering when finishing the setup. I went ahead and ordered a servo motor and speed reducer. I'll have to make a couple custom mounts but for the most part I'm happy with the progress and plan.

I looked at the plate again, it was made in '81

On 7/16/2025 at 9:16 AM, shoepatcher said:

You have lots of parts.  Need a servo motor for it.  Does the engraved line on the front of the base say 8345-6 or 8346-6?   It has an early Claes cast iron stand almost like

the Pfaff Metro Spezial that was a Claes in everything but name.  Claes sold machines to Pfaff that Pfaff out their name on it.   What questions do you have on the machine?

glenn

I'm not sure what engraving on the base you're referring to. The serial number plate on the machine says 8346/30. Now that it's sewing well and I have some more background info I went ahead and ordered a servo and a speed reducer. Other than my concern about the main shaft's horizontal movement (and the associated slop in the hand crank's spider gear) I think we're on the right track!

[friquant]

57 minutes ago, ya2daup said:

So I think I'm going to pull off the pulley and insert a couple nylon washers. Not so much that it's tight and binding but enough so that it has minimal travel

That sounds good to me