(under the class definition) Apparatus wherein a tube or hood distinct from the burner is provided to distribute fuel between a first burner and (1) a second burner, or (2) an externally accessible region; the fuel mixing with air within the tube or hood to form a combustible charge, which upon being ignited by the second burner or at said region, burns in the form of a flash passing through the tube to ignite the first burner.
