Metallurgical apparatus – Means for cutting solid metal with heat – e.g. – blowpipes
Patent
1983-10-27
1984-07-10
Stallard, W.
Metallurgical apparatus
Means for cutting solid metal with heat, e.g., blowpipes
B23K 700
Patent
active
044588844
ABSTRACT:
In a two tube cutting torch having a torch head and a body with a first cutting oxygen tube supplying oxygen from the body to the head and a second preheat tube supplying oxygen and fuel from the body to the head in which the body has a fuel inlet and an oxygen inlet and control means connected to the body for controlling the flow of fuel and oxygen, the improvement of a head mixer and thermal conductor. A member is connected between the preheat tube and the head and the member includes a straight through bore interconnecting the preheat tube and the head and the bore at the tube end is in communication with oxygen in the preheat tube. The member also includes one or more passageways extending from the tube end and is in communication with fuel in the preheat tube. The member includes one or more holes adjacent the head end extending from the bore to the passageways for aspirating fuel from the passageways into the bore and mixing in the head as oxygen flows through the bore to the head. A plurality of thermal ribs are provided about the exterior of the body for dissipating heat from the member. Preferably the thermal ribs contact the cutting oxygen tube and abut the head for more quickly dissipating heat. Preferably the member extends into the head thereby positioning the holes in the interior of the head for mixing the fuel and oxygen in the head.
REFERENCES:
patent: 3463601 (1969-08-01), Childree
patent: 4022441 (1977-05-01), Turney
patent: 4030710 (1977-06-01), Turney
patent: 4248384 (1981-02-01), Swicker
patent: 4413809 (1983-11-01), Fischer
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