Its a Marvel model #8 tilting frame, friction drive, metal cutting saw.
I have had one that vintage, it worked every day after I changed the flat
belt step pulleys to a cog belt with a VFD drive for speed control. The friction
drive consists of two spinning plates, one smooth and one with cork inserts that is driven and pressed against the other one by sliding a weight down a bar on the right side. They still sell this same basic saw ( with lots more sheet metal guarding)
Ron