Nähmaschinentechnik-Forum

Hello everyone (and please excuse that I write in English, I'm in Sweden)

I recently bought this machine to use for small leather projects. It seems very well-maintained, and was in use by an older gentleman until he passed away. I believe it may be a Kochs Adler 'Universal Elastic' but am unsure (at least 'Universal' is visible on the paint).

Unfortunately I'm worried I maybe paid too much as I cannot get it working properly. I thought that the machine was just incorrectly threaded, but now I'm wondering if the bobbin cases are wrong. None of them seem to move close enough on the left side to catch the thread. Included were 3 bobbin cases of 2 slightly different sizes (you can see the measurements written on the containter). The darker one is I think, original, and is slightly shorter than the other two. The smaller, shinier ones do not seem to sit properly in the shuttle. I do not know if they should normally have so much extra space.

Any information or help would be greatly appreciated! I'm hoping I didn't make a mistake... (I don't have a car so I'm limited to what's available locally, I wanted something smaller that doesn't rely on electricity).

Thank you!

-lich im Forum

wir freuen uns auf einen regen Austausch mit dir

für Fragen zu deinen Maschinen bitte immer jeweils ein neues Thema eröffnen,
am besten gleich mit Fotos

Bilder bitte als Anhang hochladen
verlinktes verschwindet meistens nach kurzer Zeit und macht damit das Thema unbrauchbar
_________________________________________________________________________________________

everything is fine

please show us a Foto when the threaded Needle just ist passed by the Hook

Thank you, please see attached :)

MfG

High,
Your machine looks a little bit like mine:
viewtopic.php?f=14&t=7791
I have made you a small film, maybe it will help you:
https://vimeo.com/734793367
Christoph

Christoph hat geschrieben: ↑Freitag 29. Juli 2022, 19:56 High,
Your machine looks a little bit like mine:
viewtopic.php?f=14&t=7791
I have made you a small film, maybe it will help you:
https://vimeo.com/734793367
Christoph

Thank you Christoph! Yes, I think we have the same machine (or at least very similar).

Unfortunately I think that I will have to find another shuttle hook/bobbin case. It looks like everything is correct but the 'hook' part is too worn down from many years of use. It does not sit as close against the side when it turns.

High,
it may be you need a new shuttle, but first I would check to make sure everything else is correct.
Needle position:
If the mark on the needle bar is in line with the head plate, the needle eye should match the needle plate. The needle eye should not be exactly perpendicular, but point slightly in that direction. when the needle is all the way down, with the shuttle pivoted all the way back, the tip of the shuttle should be just behind the needle channel. The needle then lifts a little bit, the thread forms a loop and then the shuttle starts to move forward again, the tip of the shuttle catches the loop, the needle moves down slightly again and the loop is pulled around the shuttle. On my machine, nothing can be adjusted so easily at this timing. With increasing wear, the tip of the shuttle would not go back far enough until behind the needle channel. Since the tip of my shuttle was broken off, I had to rework it and now it fits again.
It's best to check thats all with material under the foot by turning it slowly, as I did in the video.
I hope you can understand my english, because i had only a few years of english in school, i had very bad notes in it and that was a long time ago.
Christoph

Christoph - THANK YOU very much! I'll check the other things, but with your advice and helpful video, I discovered that the previous owner probably had the incorrect needle size.

I lowered the needle by 5mm or so and it seems to work!! Now I feel a bit dumb... As I understand, the machine should take System 88 needles, so I have ordered some to try.

I do have one other question- do you know the purpose of this knob? I don't quite understand what it does...
Your English is quite good, (and I'm the same with writing in Swedish so I understand the feeling).

Thank you to everyone who replied!

Hallo,

das ist der Stichsteller.

Nein, doch nicht. siehe die nächste Antwort von Christoph

Viele Grüße
Paul

High,
System 88 is the same needle I use. The length of the stitch is adjusted with screw 10.
With screw 13 you set how high the foot lifts according to the thickness of the material you have to sew.
Christoph

Danke Christoph,

hier die Google Übersetzung:

Only when you have to sew very thick fabrics that are more than 8-10 millimeters high does the foot have to be raised a little higher, which is caused by turning the screw 13 a little higher.

Viele Grüße
Paul