I picked up one of these at a pawn shop some time ago.

http://www.grainger.com/product/WORTHINGTON-Air-Acetylene-Kit-2VU54?functionCode=P2IDP2PCP

It is handy and self contained and can bee hooked up to a large acetylene tank in an emergency. The tip is similar to a tip I bought over 50 years ago with to flow lead with before we had Bondo. Back then we called them a green flame tip.