On a Facebook group I'm in someone just posted that they saved a machine that was going to be dumped because the spool pin had broken off. Sure these can be replaced, but whether you do or not, I thought about it and would probably not bother.
What has changedUntil the 1970s, domestic machines had only vertical thread spools because domestic thread was wound on from the side in a neat stack and was expected to be placed onto a vertical spool pin where it spins as the thread unwinds.
|Top is from the 1960s, only straight-wound here.|
What to doYou can easily overcome the disadvantage of hard to find straight wound thread.
Before buying a thread stand, I simply stuck a pin in the wooden window frame above my treadle cabinet and placed a cone of thread under it. The thread was brought straight up and around the pin then down to the machine.
I would (in fact I did) replace this with an industrial thread cone stand and now have the thread go directly onto the first guide. I happen to have a lot of industrial thread cones I paid nothing or almost nothing for, from op (thrift) shops, hard rubbish and garage sales, and it would be ridiculous to waste this. It works for modern thread too so I can use any thread now.
A More Technical Explanation on YouTube
Someone far more experienced than I has made a video about this and made it available on YouTube. I urge everyone to watch it if you have a vintage machine.
So buy or make one and you can feel happier that your stitches won't be twisted, your thread won't break as easily and you can save money by buying in bulk.