Cutting torch

Details Cutting torch Cutting torch

1984-05-30

1986-02-25

Stallard, Wayland

Metallurgical apparatus

Means for cutting solid metal with heat, e.g., blowpipes

2394193, 2394245, 2393975, B23K 700

Patent

active

045724830

ABSTRACT:
Disclosed is a cutting torch having a preheat tube in which the mixing structure within the preheat tube includes both a heat absorbing spiral and a blunt-nosed jet in the oxygen passageway upstream of the injection point at which the fuel is mixed with oxygen. The jet is simple to machine during the manufacturing of the torch parts and, when properly positioned, causes sufficient turbulence in oxygen flow to assure complete and consistent mixing of the oxygen with the fuel, even at low fuel pressures. The actual mixing of the fuel with the oxygen is accomplished at a point immediately downstream of the jet where a plurality of transverse passageways leading from a fuel carrying channel intersect the central passageway leading from the jet. These transverse passageways are preferably disposed at an acute angle to the longitudinal axis of the mixer tube such that the transverse passageways are pointed downstream and inwardly toward the center of the mixer tube.

REFERENCES:
patent: 1340690 (1920-05-01), Coberly
patent: 1461873 (1923-07-01), Grote
patent: 2198342 (1940-04-01), Jacobsson et al.
patent: 2335500 (1943-11-01), Errett
patent: 2519939 (1950-08-01), Smith
patent: 3078913 (1963-02-01), Anthes
patent: 4022441 (1977-05-01), Turney
patent: 4248384 (1981-02-01), Zwicker
patent: 4413809 (1983-11-01), Fischer
patent: 4458884 (1984-07-01), Fischer

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