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Патент USA US2106439

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Jan. 25, 1938.
Filed Nov. 4, 1955
_ W
Patented Jan. 21s, 1938
Julius Schubert, Long Island City, N. vY., assign- - '
or to Steiner Bros. l_nc., Long Island City, N. Y.,
a corporation of New York
Application November 4, 1935, Serial No. 48,253‘ '
1 Claim._ (01. 219-_-2c)
This invention relates to electric soldering irons
in the tip to heat the carbon and transmit heat
and, among other objects, aims‘to provide a rela-
to the tip.
socket or source of alternating current at the
change the effective length of therod. '
tively simple, rugged, reliable and cheap tool of
this type‘ adapted to be heated "almost instan5 taneously, The main idea, is to prgvide an 1mproved simple tool that can be used with a small
transformer and connected to anpordinary lamp.
In this example, the lower em} 0f the conductor
rod It has a split vsocket to receive a small exten
sion 29 which is adaptedto be pushed into contact 5
“11th. the upper end of the catboh electrode Ex
tehslohs of different lengths me)’ be used to
usual voltage or to any source of low voltage alter- > To Insulate the Conductor rod “from the tube
0 nating or direct current.
, ll, there'is shown a porcelain sleeve 2| closely
other aims and advantages of the ‘invention
in the tube. The upper end‘pf
Sleeve is
will appear in the speci?cation, when considered cut away Oh one Side 50 that it Wm Pass the Screw
glhgsg??c?on w‘t,
ccom an -n
the a
P W g
l2 and provide a stop shoulder 22 to limit its
movement into the handle. The lower end of the
Fig. 1 is a central sectional View of a soldering
lain sleeve serves as a stop for the carbon 15
adapted to be used with a Separate trans, electrode l9 so that
when the rod is withdrawn
a former when supplied with. alternating current at > from contact with the electrode, the electrode will
is tool
the usual voltage.
. '
r not
it into rod
the I8
- ~
is adapted to be manipu
odi? d form of
thgitoozl 1:934:11; gatrllrfsaiogrfnzrmmour?zed
in the
F1?‘ 3 {s a‘ Sectional ‘new taken or} the line 3'3
of mg‘ 2’ and
?g- 4. is a fragmentary sectional View showing
how the tool in Fig. 2 maybe employed’ for weld-mg and hTazihg-_
Referring pertlcula?y to the drawing’ the type
of tool shown in Fig' 1 is designed to be used wlth
30 a small step-down transformer when connected to
a switchan
23 ‘having
a Stem
2‘ ban
pro‘ 20 '
slot 25
in the
die. This button may be made of heat insulating
material and is preferably connected to a screw
26 which binds the terminal of conductor 16 to
the upper end of the rod IS. The rod is normally 25
urged upwardly out of engagement with the cap
bon electrode by means of expansion spring 21
between the upper end of the porcelain sleeve and
the stem 24 of the push-button. Contactlmay be
made by Simply pushing- on the button 13 until the 30
a source of alternating current at, Say, 110 Volts, _ extension 24 strikes the electrode and the contact
Or it may be Connected direetly'te an automobile,
storage battery Supplying, Say, 6 to 12 Volts; This
type of tool is well adapted for use in factories.
0 shops, laboratories, households and on farms for
o: 1
is broken when the button is released. The tip
It is shown as having a peep opening 28 through.
which ‘the carbon electrode may be observed.
When the current is turned on by making the con- 35
all kinds of soldering.
tact, the electrode will be heated almost instant
Herein, the tool has a hollow handle l0 conveniently made of wood or other suitable mate-
ly'and will glow through the peephole.
In Fig_ 2, there is shown a t0o11n which a small‘
rial. A metal tube II is removably secured in the ' transformer is mounted in the handle. This type
40 lower end of the handle by means of a screw 12 of tool is adapted to be used by tinners and plumb- 40
shown as projecting through it and to prevent the ers and other artisans who require portable tools
tube from burning, the‘ handle, it is insulated
therefrom by a Short tubule!‘ piece of heat 1115117
l?tlng material '3. Such as asbestos and mica45 The lower end of the tube is screw threaded intemelly ‘60 receive a hollow soldering tip 14. -
ln'this instance, electrical conduits l5 and Hi
‘Shown as leading from the low side 0! a trans-
of this type. .In this example, the conductor rod
I8’ is always held in contact with the carbon elec
trode, l9’ by a compression spring 30 electrically 45
connecting one terminal of ‘the transformer with
the rod, the other terminal or the transformerbe- ‘
ing connected to the tube ll’ bya, conductor 3|.
The transformer is so designed as to form a part '
‘- former‘ ll enter the upper end of the handle it,
oi.’ the tool handle, and the upper end 82 provides
50 one conductor being connected to the upper end
a hand grip through which the conductors ‘I!’
of a slidable metal conductor It in the forr'nofia
small rod projecting into the tube H to a point
and I6’ project to connect to the high side of'the
transf0rmer._' In this case, the current is con
near the lower end; while the other conductor is
trolled by an ordinary switch 33in the handle. ~ .
connected to the tube l l, whereby the circuit may
This arrangement permits the handle, which may :
55 be completed ‘through a carboneiectrode l8 seated
be of any suitable design, and tlfe soldering tool to 5‘
' 2,106,489
be attached to the opposite ends of the trans
former housing. The tool is shown as being se
cured to an annular ?ange 34 on the transformer
housing, a hollow extension II being connected to
said ?ange. The hand grip portion or the handle
may be secured in like manner to the upper end
of the transformer housing.
This type of tool is ready for instant use when
- era. The carbon'electrodes
are easy‘to replace by
removing the soldering tip. The welding rod ex
tension is interchangeable with the short con
may be used for braling.
The tool is always ready
for instant use. and will take the place oi’ practi
cally all other soldering irons and similar weld
connected to alternating
It is not nec- - ing tools.
10 essary for‘ the artisan to circuits.
carry a separate trans~
former. It may be plugged into any conven
ient outlet for immediate use.
In Fig. 4, the tool shown in Fig. 2 is slightly
modi?ed for welding and brazing. In this in
stance, the tip II' and the short extension 20'
are removed and replaced by a screw bushing
4| and a long extension 4|, respectively. The
bushing is made of insulating material and serves
to hold the porcelain sleeve II’ in place.
20 extension 4| has a split ‘socket 42 to receive a
carbon electrode 0. A clip 44 is secured to the
tube H’ and a conductor ll connects it‘ to the
Obviously, the present invention is not restrict
ed to the particular embodiment thereof herein
shown and described. Moreover, it is not in
dispensable that all of the features of the in
vention be used coniointly, since they may be
employed advantageously in various combina 15
tions and sub-combinations.
What is claimed is:
An electric solderingrtool oi the character de
scribed comprising, in combination, a handle; a
step-down transformer associated with the han 20
dle; a switch in the transformer circuit; a metal
tube connected to one terminal on thelow volt
“ 30
Thus, the tool may be used for
soldering, welding or brazing.
From the .‘i'oregoing description, it will be seen
that tools embodying this invention are very
simple in design and can be made oi’ standard
age side of the transformen‘a soldering tip on
the metal tube; a carbon electrode in the solder
ing tip; a conductor mounted in and insulated
from the tube; and a combined compression
spring and conductor connecting the upper end
of the rod to the low voltageside of the trans
ized parts. They are easy to operate and will‘ former to maintain said‘ rod in contact with said
comply with all requirements of the underwrit
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