YAY!!!! Your WILD blocks are here! They are awesome!! Great Job!!
That should read THROW everything off . . . and I forgot to make certain (after cleaning) that you oil the machine with a very fine machine oil. Hugs!
I think I mentioned in another post that I am not really familiar with the Singer 15-91, but I can't see that the general clean up and operation would be different than others I have. Try a new needle and make certain everything is whistle clean. BTW even a VERY minute piece of thread in the back of the bobbin case can be enough to through everything off. Let me know how it comes out for you.
If I had Mary I would take the thread and bobbin out, I'd get brave with some cleaner - I like to use ammonia or ammonia-based sprays, lots of paper towels, toothbrushes, canned air, magic eraser, and a citrus-based oil type cleaner to polish after cleaning. I would brush, blow, wipe, and get into all the nooks and crannies. Then I would get a newly wound bobbin, a new needle, and a good spool of thread and start from scratch. Then I'd sit there with a double thickness of muslin or light-weight cotton fabric and sew and sew and sew - making tension adjustments as I go. Remember, too, when you put your bobbin thread in you should be able to grab the tail and hold it out at arms length and the bobbin and case should not move down. You also should be able to gently pull and not feel a great deal of tension from the bobbin.
usually people get rid of them for one of two reasons. 1) the primary user has passed away or had some infirmity that prevents them from sewing - and no one else in the family is interested or even knows what a sewing machine is so they get rid of it; and 2) someone has the machine and they run into some problem with it that they can't solve, so they either sell it or give it away. I know the latter is the case in a few of my machines. For instance, above the bobbin case on one of my vintage machines is a 'finger' that guides the thread. The machine would not move or sew. Inspection showed that there was thread wrapped tightly around this finger probably from a misaligned bobbin case. Once this thread was removed it works just great.
Ah, I'm so sorry Mary is having hiccups. Unfortunately, I can't help much. I've got a machine that just started doing this and I think in my case the needle just needs changed - but I haven't had time to do that. Did you give Mary a thorough cleaning when you got her home? I know on one of my recent acquisitions she had so much 'gunk' built up that once I cleaned all away she started sewing like a dream. It is so strange with these vintage machines -
hello welcome to the forum
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