Not to divert (at least too far), you can find out about your machine here http://www.ismacs.net/home.html
You can look up the serial number to find out exactly what model and date it. They also have manuals.
I have two old Singers from the 1950s. They are fabulous machines. They will do pretty much all of your DIY needs.
When you get into deep winter, a hammock sock is the way to go and forego the tarp altogether. Do a search for hammock socks and you find out all about them. Medicine Man did a video of the Roan High Knob hang back in February this year. None of the tarps handled the wind very well, but his sock did great.