Not really since real heavy metal was already out when Crimson was making it's first albums. However, there are a few Crimson songs that you would think influenced just about everything that came after them. And they (like the Beatles, Zeppelin, Van Der Graff Generator, etc etc) had several songs I would easily define as heavy metal.
Proto metal I would say are things like some of Tull's first album, songs like Tommorow Never Knows, Helter Skelter, Voodoo Chile, Manic Depression, Eight Miles High, I can See for Miles, Tales of Brave Ulysess, etc. Blue Cheer, etc.
Well, I think you get the point. Things that preceeded Black Sabbath and other bands that could loosely be considered heavy metal.