Abstract: Oxygen and acetylene are mixed in a mixing chamber of relatively large cross-sectional area, and are then passed through an elongate passage where they develop stream lines of flow, the mixture then passing through a plurality of elongate nozzle apertures arranged in a circular pattern around a central oxygen aperture in the nozzle, the nozzle apertures converging in a downstream direction such that their projections all intersect the projection of the central oxygen aperture at a single convergence point.

Abstract: An oxy-acetylene torch, having a welding and cutting handpiece wherein a flame nozzle is in communication with a gas mixing chamber and a cutting nozzle is in communication with an oxygen conduit, the cutting nozzle being supported from and displaced from the flame nozzle and so inclined to the central axis of the flame nozzle as to direct the oxygen stream into a flame when issuing from the flame nozzle.