US 4,585,409 AGranted

Spring loaded heating torch tip

AssigneeVictor Equipment Company

InventorDavid A. Pryor

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Abstract

An improved heating torch having the usual fuel and oxygen passageways and valves for controlling the flow of the respective components, mixer for mixing fuel and oxygen, and tip for flowing the admixture exteriorly thereof for burning to heat a work piece or the like, the improvement being characterized by a multiple piece tip that is spring loaded such that one or more internals can be spring loaded to be retained within a shell that is affixed to an end piece of the tip. The end piece fastens to the end of an elbow connected with the mixer, and has the shell disposed about the end piece; and one or more tip internals are disposed inside and biased toward their normal assembled position by a spring or the like. Different sized heating tips are readily formed by simply adding internals and larger sized end pieces and shells to form one or more rings of grooves defined by splines that can be easily manufactured and assembled. In addition, the heating torch tip is amenable to underwriter approval, since it alleviates problems with flashback and burning due to striking of a heating tip against a work piece or other objects during handling.

In a heating torch in which a fuel and oxygen admixture is fed to a tip and burned at high temperature exteriorly of the torch tip for heating a work piece or the like and including:

a. a fuel passageway and valve for supplying a controlled flow of fuel;
b. an oxygen passageway and valve for supplying a controlled flow of oxygen;
c. a mixer for mixing said fuel and oxygen;
said mixer being connected in fluid communication with both said fuel and oxygen passageways and valves and having a discharge end;
d. a tip for evenly flowing said fuel and oxygen exteriorly thereof for burning adjacent said workpiece for the heating thereof;
the improvement comprising having said tip in the form of a multiple piece unit comprising:
e. an end piece having at one end a centrally disposed aperture and passageway;
said aperture and passageway having a section adapted to matingly and sealingly engage said discharge end of said mixer;
said end piece having at its other end a shell attaching means for attaching a shell;
f. said shell having an end piece attaching means for sealingly connecting with said shell attaching means of said end piece and having an internal stop means for holding at least one tip internal interiorly thereof;
g. at least one tip internal disposed interiorly of said shell;
said tip internal having an external stop means for keeping said tip internal interiorly of said shell responsive to said internal stop means of said shell and having a receiving means for receiving a biasing means for biasing said tip internal toward said internal stop means of said shell;
h. a stub disposed in said at least one tip internal and
i. said biasing means being disposed so as to bias said tip internal toward said internal stop means of said shell such that said at least one tip internal can be easily and readily assembled interiorly of said shell and said biasing means emplaced and said biasing means will allow hitting said stub against said work piece without flashback burning.

11 more elements

Abstract

Claims10