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Патент USA US2404590

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My 23, 19%.
D. NANTZ I
HEAT CONCENTRATTNG NOZZLE PROTECTOR FOR HEATING
CUTTING, AND WELDING TORCHES, AND THE LIKE
2,404,590 ‘
Filed Aprilr'2o, 1945
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Patented July 23, 1946
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2,404,590
UNITED [STATES PATENT foFFicE
HEAT CONCENTRATING NOZZLE PROTEC-n
TOR FOR HEATING, CUTTING, AND WELD
ING TORCHES, AND THE LIKE
.
Randolph Delbert Nantz, Orange‘, Tex.
Application April 20, 1943, Serial No. 483,722.
2_Claims.
,
(01. 158-214) I _
1
r
This invention relates to heat concentrating '
nozzle protectors useful in connection with weld
ing torches and the like.
_
' ,
The nozzles of welding torches are delicately
formed with multiple minute discharge outlets at 6
'
2
Fig. III, is a cross-section taken as indicated
by the angledxarrows III-III in Fig. II; and
Fig. IV "is a perspective view of the heat con
centrating nozzle protector detached from the
torch.
>
‘
their tips at which a combustible mixture of
acetylene, propane, natural gas, or the like and
oxygen is forcibly projected; and are usually .con
The welding torch illustrated in Fig. I for con
venience of’ exempli?cation herein has a grasp
handle I with separate longitudinal flow ducts or
structed from relatively soft non-corrosive metal
:channels (not shown) for acetylene or other in
such as brass, copper or bronze. Through rough 10 ?ammable gas, and oxygen delivered under pres
handling of the torches in use, the nozzle tips are
sure through supply tubes (not shown) for the
very often dented or otherwise damaged, with re
connection of which nipples 2 and 3 vare provided
sultant distortion of the discharge ori?ces, which
at‘ the rear; end of said handle. Integral with
for correction, ordinarily entails entire replace
they handle I at theforward end thereof is the
ment of the nozzlev parts at considerable cost and 15 .body II of a'valve, the stem of which is operable
delay. Moreover, in heating, cutting and weld
ing, the nozzle ori?ces invariably become. clogged
by ?ying rust, scale and dirt from the metal be
ing burned or welded, so that frequent disas
sembling and cleaning is required for mainte
nance of the torches in e?icient working condi
tion.
'
.by means of an overlying press lever 5 to con-'
currently control the flow of the oxygen incident
:toqthe use ‘of the torch. Leading from’ the front
*end of the valve body .4 are two parallelpipes '
20 6 and 'I by which the acetylene and the oxygen
'are conducted to the nozzlerheadr 8 of the torch,
said pipes communicating by way of passages 9
and I0 with the vertical bore II of said head.
The chiefaim of my invention is, to obviate the
above drawbacks. This desideratum I' attain in
The nozzle- of the torch. is ofmultipartitecon
practice as hereinafter more‘ fully disclosed, 25 struction, ‘i. e.;».consists of an inner core piece or
through provision of a simple and inexpensive ‘ jet ‘component I2, and an outer or enclosing
heat concentrating nozzle protector in the form of
tapering shell component I3. Somewhat below
a tube of steel or other relatively hard metal or
its top the jet component I2 has an integral cir
material, which is securable to the torch and com
cumferential enlargement, or collar I5 whereof
pletely surrounds the nozzle tip, being somewhat 30 the upwardly-tapering end snugly ?ts into a cor
larger in diameter than said tip to form an an
respondingly-tapered seat at the mouth of the
nular interval around the latter, and having
pendant externally threaded neck I 6 of the head.
apertures or ports at intervals of its length‘ so
Extending axially through the jet component I2
that air may enter into and be drawn down to
of the nozzle is a duct I ‘I through which the
ward the burning end of the nozzle through said
oxygen passes downward from the hollow of the
interval under the suction created by the ?ame
head 8 to the nozzle tip. Below the enlargement
blast, to divert ?ying rust, scale and/or dirt from
or' collar I5, the jet component I2 is ?rst
the metal being burned or welded away from the
diametrically reduced as at I8 and then tapered
nozzle tip, and at the same time concentrate the
as at‘ I9, with resultant provision of an annular
heat of the flame at the nozzle tip.
40 gas ?ow passage 20 between it and theshell com
A further aim of my invention is to secure the
ponent I3, the tapered portion being fluted as at
above advantages in a heat concentrating pro
2|. At the top the shell component I3 is formed
tector which acts in the further capacity as a
with an external circumferential ?ange 22 which
means to hold the component parts of the nozzle
abuts the bottom or shoulder of the collar I5 on
assembled with the torch.
-
Other objects and attendant advantages will
appear from the following detailed description of
the attached drawing, wherein Fig. I is a view in
45 the jet component I2, said shell component being
cylindric except toward its bottom where it is
tapered to conform more or less to the shape of
the lower end of said jet component. After entry
side elevation of a well known and widely used
into the nozzle head 8, the acetylene gas passes
type of oxy-acetylene cutting torch embodying 50 down through a series of small circumferentially
the heat concentrating nozzle protector of my in
arranged substantially vertical ducts 23 in the
vention.
collar I5 of the jet component I2 into the annular
Fig. II is a fragmentary view in longitudinal
space 20, and ?nally through the small restricted
section of the burner tip end of the torch with
ori?ces 25 at the tip end of the nozzle jointly
the heat concentrating nozzle protector in place. 55 formed by the ?uting 20 of said Jet component
2,404,590
3
ori?ces of said nozzle, but as a screen around the
flame to concentrate the heat‘ at the nozzle tip.
and the contiguous wall of an axial opening 26.
at the bottom of the shell component l3, to meet
with the oxygen issuing from the discharge end of
The protector 21 moreover serves as a means to
hold the nozzle parts in position on the torch by
‘Y the duct [1.
virtue of taking the place of a nut (not shown) I
Having now briefly set forth the construction
of the torch, I will describe the heat concentrat
which ordinarily serves in that capacity.
From the foregoing it will be seen that the heat
retaining nozzleprotector of my invention is not
ing nozzle protector with which my invention is,
more especially concerned, the same being com
prehensively designated by the numeral 21, in the
drawing.
..
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4 .
only simple and inexpensive to produce in quan
,.tity, but applicable to standard types of welding.
- torches without necessitating any structural
As shown, this protector is in the form of a tube
with a cylindric bore, which, in practice, is fashe' " changes-in them or requiring any modi?cation in
their normal mode of operation.
ioned from a relatively hard material or metal.
preferably steel, and shaped to approximate the. J
outside con?guration of the shell component l3,
of the torch nozzle, that is to say, made with its
upper portion 28 cylindric, andwithitslloWBnpnri
tion 29 slightly tapered.
It is to be noted that . . .
the protector 21 extends to a substantial distance
beyond the nozzle tip, and that its internal di
mension is slightly larger than the outer dimenf
sions of the shell component I3 of the'nozzle so
that a coextensive narrow outwardly-?aring an
nular inter-space 30 is provided between said tube
Having thus described my invention, I claim:
1. A tubular heat concentrating protector for a
welding torch or the like having a nozzle head
with a threaded neck, and a nozzle with a circum
ferential ?ange at one end, said protector being
vsubstantially co-extensive with and completely
surrounding the nozzle with attendant formation
of_an intervening annular air space, having air
inlet ports at longitudinal intervals, an internal
circumferential shoulder adjacentits top to bear
against the .?ange of the nozzle component, and
and sleeve component. At its upper end the pro 25 being there internally threaded for screw engage
ment with the threads of the nozzle head.
tector 21 has a polygonal enlargement St for
2. A tubular heat concentrating protector for
wrench application, with a circumferential in
use with a welding torch or the like having a noz~
ternal shoulder 32, which, see Fig. II, bears up
zle head with a threaded neck,'and a nozzlein
ward against the flange 22 of the shell component
l3 thereby ‘to hold the latter and the jet com 30 cluding a jet component with a circumferential
" - 1 ponent l2 assembled with the torch.
As shown
enlargement at one end'thereof ?tting into-the
neck, and a surrounding tapering shell compo
in Figs. II and III the enlarged upper end'of the
nent with’a ?ange at one end to bear against the
protector 21 is internally threaded at 33 for the
circumferential enlargement of the jet compo:
purpose of screw engagement with the pendent
threaded neck l6 of the nozzle head'8. At suit 35 nent, said protector being substantially co-exten
sive with and. completely surrounding the nozzle
able intervals longitudinally and circumferential
with attendant formation of anoutwardly-?aring
7 ly, the body portion of the protector 21 is pro
intervening annular air space, having vair inlet
vided with apertures 35 through which-air is
apertures at longitudinal intervals, an internal
drawn by-the suction created by'the ?ame blast at
shoulder adjacent its top to bear
the nozzle from the exterior into the interval 30 40 circumferential
against the ?ange of the sleeve component of the
for discharge eventually at the burningend of
the nozzle. This discharge .rush'of air annular'ly » nozzle, and being there internally threaded'for
screw engagement of 'the'neck of the nozzle head
of the nozzle operates not only'to blow rust or
scale and dirt'f'rom the metal being burned or
welded to prevent entering and clogging the jet
' to holdythe nozzle parts assembled with the torch.
RANDOLPH .‘DELBERT NAN'TZ.
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