electricity questions?

Hi guys, I have a quick question should be easy hopefully, MY shop is wired for 110 and 220, The only thing that runs on the 220 is my compressor, and its a 30 amp breaker, the whole rest of the garage runs off a 20 amp breaker, Everytime i try to weld, i pop the 20 amp breaker, Is there any way... that i can Tee off the 220 and seperate the one leg and make a 110 outlet off of that and either use the compressor or the welder? thanks guys!