I sympathize, being unemployed myself and deciding whether I'd like a sewing machine or to be able to pay another month of rent.
But you know, today may get better and something unexpected and wonderful may happen! And if not today, then know you're doing the right thing by getting things done. That way, when something good does pop up, you'll be all prepared for it.
Have you considered applying for a microloan to buy the longarm? Microloans are much different than regular loans. You might research them on the web. They do exist in the US and not just for third-world countries.
You might also consider contacting your local SBDC (Small Business Development Center) for help on this. They're free, and they can tell you what other kind of help is out there, too.
http://sbdcnet.org/