Bartack machine not completing the back stich

[Cleggy]

On 9/16/2023 at 10:23 AM, gottaknow said:

The 1850’s are workhorses and I’ve never worked on a clone. This issue is often caused by worn or glazed cork surfaces which causes slipping during the final barring stitches which is basically the stitch that secures the entire bartack. The other cause can be the push plate needs to be tightened. This can also cause the underbed thread trimmer to not cut clean. To test, cycle the machine with normal thickness under the clamp. I use the handle end of a large screwdriver to press on the push plate during the entire run cycle. If machine cycles normally and produces a quality tack, there’s your issue. As a side note, don’t over tighten the drive belts which can prevent the drive pulley from moving easily in and out. Have fun!
 

Regards, Eric 

Hi Eric,

thank you for the suggestions, sorry to show my lack of knowledge, but what would the cork surfaces be?

I will tighten the push plate, does it want to be super tight or just snug?

thanks again,

Iain

[Cleggy]

Hi All,

I would like to thank you all for your most helpful comments, such a friendly group on this forum.

The problem turned out to be the needle bar, the upper and lower marks are missing from my particular machine, I reset the height manually and it seems to work.

Have a great week everyone,

Iain 

New Zealand