Very Old Snow Cone Machine

I just received this Snow Cone Machine don't know much about it. The only marking's on it is on the bottom the letters are SK-7-A if anyone knows anythink about it can you let me know. What company or date. The machine even has a lit in it. It still runs good. What I can understand my uncle had this in the early 1970's. Thanks Rip. P.S. I have a Phillip Haas toilet on here a lady said her great great grandfather invented the toilet. If you see this let me know. My phone number is 931-232-2090 Or e-mail rippy12@hotmail.com Thanks. Just finished it Looks COOL.