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Патент USA US2412492

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E. BRAzms
`
I
WELDING
2,412,492
ELECTRODE HOLDER
Filed Jan.4 11, 1945
INVENTOR.
» H11/dfi «Z/"Á’ZZZZ'S'
BY
\
„XM
Patented Dec.. l0, i946
2,412,492
UNITED STATES PATENT OFFICE
2,412,492
VÍELDÍNG ELECTRODE HOLDER
Edward Brazi'tis, St. Clair Shores, Mich.
Application January 11, 1945, Serial No. 572,322
12 Claims. (Cl. 219---8)
1
2
This invention relates to welding electrode hold
ers and has particular reference to certain new
and useful improvements in the construction
thereof `by means of which the device is made
more durable and more eiiicient in operation,
Principal objects oi’ the invention are to pron
vide:
the embodiment illustrated in Fig. 6 and taken
along the staggered line 'il-«1 thereof.
Referring now to Figs. l to 5, there is illus
trated a welding electrode holder comprising a
handle lo having a jaw I2 fixed thereto and a
jaw i5 pivoted on and for movement relative to
the jaw i2. The handle l@ may, as illustrated,
A new and improved welding electrode holder;
A welding electrode holder which is constructed
trical non~conducting material open at both ends,
comprise a hollow tubular member l5 of elec
in such a manner so as to be durable and efficient
one end of which provides a socket in which is
in operation;
A welding electrode holder which is constructed
fitted the enlarged end lil of a jaw member 2S.
A screw 2i of electrical insulating material may
be utilized to clamp the end i3 of the jaw mem
ber 2Q in the end of the handle l@ and with the
and arranged so that parts which become defec
tive may be readily replaced;
A welding electrode holder having metal shields
covering the current conducting jaws and which
shields are electrically insulated therefrom;
A welding electrode holder of the pivo-ted jaw
head 22 of the screw countersunlr in an appropri
ate hole in a wall of the tubular member It. The
enlarged end i8 of the jaw member 2€) is pro
vided with a socket ill for receiving the end 2t
of a current conductor which extends through
type embodying the new and efficient pivotal con
nection which is constructed and arranged in 20 the tubular member Iâ for supplying current to
the jaw l2. The end 25 of the current conductor
such a way that current does not iiow through
is appropriately arranged and clamped in the
such pivotal connection.
socket 24.
Other and further objects of the invention will
The jaw member 2li may comprise a metallic
`be apparent from the following description and
casting which projects from the end of the han
.claims and will be understood by reference to the
dle lil and have a jaw element 28 removably se
4acoompanying drawing, of which there is one
cured by means of integral pins 3@ to seat 2S,
sheet, which, by way of illustration, shows pre
the heads of which pins are peened over and
ferred embodiments and the principles thereof
countersunk in the under surface of the jaw mein
,and what I now consider to be the best mode in
ber ‘Eil at the forward end thereof. The jaw ele
‘which I have contemplated applying those prin- i
ment 28 is securely clamped to the jaw member
.ciples Other embodiments of the invention em
2i! and is provided with a plurality of transverse
bodying the same or equivalent principles may
grooves 32 which cooperate with similar grooves
be used and structural changes may be made as
32 in the jaw element S4 of the other jaw lli for
desired by those skilled in the art without de
holding a welding electrode therebetween.
parting from the present invention and the pur
A metal shield 3S of channel shaped cross sec~
-view of the appended claims. I also contempla-te
tion is mounted on the jaw member 2G and in
'ithat of the several diiîerent features of my in
sulated therefrom by means of a strip 33 of in~
vention, certain ones thereof may be advanta
sulating material which is arranged in the bot
geously employed in some applications separate 40 tom of the shield 35 at the forward end thereof
and apart from the remainder of the features.
so as to insulate the forward end of the jaw memn
In the drawing
Fig. 1 is a side elevational View, partially broken
away, of a welding electrode holder embodying
ber from the shield 36. The insulating strip
38, formed of suitable insulating material, func
tions- as a spacer to space the shield 35 from
the invention;
Figs. 2, 3 and 4 are transverse sectional views
taken in planes along the lines 2_2, 3_3, and
4-4 respectively of Fig. l;
` . the jaw member 20 so as to provide an air gap
Fig. 5 is an exploded View on a reduced scale
rair gap between the front of the jaw member 2Q
and the jaw element 28 and the shield
4The
shield 3G further is cut away at its front and along
the sides so as to provide adequate clearance for
the electrode which will project from between
Vthejaw elements 28 and 34.
The jaw member 20 is narrower in width than
of the parts which form the lower jaw of the
device as illustrated in Fig. i;
Fig. 6 is a View corresponding with Fig, 3 but
showing a modified form of pivot construction for
the jaws; and
.
7 is a fragmentary side 'elevational View of
49 therebetween, The shield 36 and the insu
lating strip 38 project forwardly a short dis
tance of the jaw member 2Q so as to provide an
2,412,492
3
4
the shield 36 so as to accommodate insulating
In this embodiment, however, the projection 46 is
strips ¿l2 between the side walls of the shield at
the back thereof and the jaw member 20 for elec
omitted and in lieu thereof the shield |36, corre
sponding with the shield 36, is provided with ears
|37 oiîset inwardly and overlapping the sides or
trically insulating one from the other and so as to
the release handle 56. A pivot pin |39 extending
provide an air gap between the sides of the jaw
through aligned holes in the ears |31 and headed
member 2&3 and the shield 36 at the front thereof,
forms the pivotal connection between the jaw
as illustrated in Fig. 2.
members |2 and lil, Jaw member 26 has a hole
The side walls of the shield 36, the insulating
therethrough in which insulating bushing |45 is
strips ¿32, and the jaw member 2|) are provided
with aligned holes, as illustrated in Fig. 3, for l arranged. Screws |47, the heads of which are
countersunk in aligned openings in shield |36,
receiving a pin @irl which functions to retain the
threadedly engage bushing |45 to retain the
shield 35 and insulating strips 38 and ¿l2 assem
shield |36 and insulating strips assembled to the
bled to the jaw member 2t. The hole through
jaw member 2t. Since the shield |36 is insulated
the jaw member 26 is larger than the pin 44 so
from the jaw member 2li, it is apparent that there
as to accommodate an insulatingv bushing d5
is no electrical path through the pivotal connec
through which the pin ¿it extends for insulating '
tion. rI‘he construction of the jaw l2 is, except
the pin ¿il from the member 28. The ends of the
in the foregoing particulars, the same> as that il
pin di may be headed and countersunk so as to
lustrated in the previous embodiment, and for
be flush with the outer surface of the shield 36.
this reason the same reference characters have
In order to take apart this assembly it is only
been used to indicate corresponding parts.
necessary to drill one of the heads of the pin 44,
While I have illustrated and described pre
after which the pin may be knocked out of its
ferred embodiments of my invention, it is under
place and the assembly may then be taken apart.
stood that these are capable cf modification, and
The jaw member 2G is provided with an up
standing boss ¿i6 provided with a transverse hole 25 I therefore do not wish to be limited to the pre
cise details set forth but desire .to avail myself of
¿le which is designed to accommodate hollow
such changes and alterations which fall within
stems 5d of buttons or members 52 formed of in
the purview of the following claims.
sulating material. The buttons 52 form bearings
I claim:
for a pivot pin 5i which extends therethrough
1;. In a Welding electrode holder, a current con
and through aligned holes provided in a release 30
ducting member having a current conducting
handle 56. The ends of the pin 5d are headed
cable directly attached thereto and terminating
and countersunk in the walls of the release han
with a clamping jaw, electrical insulating mate
dle 5t so as to be flush therewith. The buttons
rial at least partially covering said current con
52 form part of the pivotal mounting for the
ducting member, a metallic channel member atA
jaw hl on the jaw |2 and insulate the jaw Iâ,
least partially covering said electrical insulating
including its release handle '56, from the current
material, a bushing of electrical insulating ma
conducting jaw member 26. The buttons 52
terial recessed in said current conducting mem
function as spacers between the projection 46 and
-ber and forming a part of a fastening means for
the side Walls of the release handle 56.
securing together said metallic channel .mem
The release handle 56 is formed of metal and
ber, said electrical insulating material and said
integrally with a shield 58 which houses and sup
current conducting member, said fastening
ports an insulating block or strip 6B. A pin 62
means being constructed and arranged so as not
extending through aligned holes in the shield 58
to form an electrical path from said current con
and the block 66 holds the same in operative
ducting member to said metallic channel mem
relationship.
ber.
The metal jaw element 34 is removably secured
2. In a Welding electrode holder, a current
to the insulating strip 56 by means of integral
conducting member terminating with a clamping
pins such as 30. The jaw ld, which includes the
jaw, electrical insulating material covering at
jaw element 35 and the release handle 55 and
the shield 53, is normally retained in the posi 50 least part of said current conducting member, a
metallic channel lmember covering at least part
tion as illustrated in Fig. 1 by means of a coil
spring 613 which is confined between a boss 66
on the handle 56 and a cup-shaped seat ‘63 of
of said electrical insulating material and insu
lated-thereby from said curr mt conducting mem
ber, said electrical insulating material being con
electrical nonconducting material which is seated
on the jaw member 2€! and the insulating strips 42 55 structed and arranged to form an air gap be
tween a portion of said current conducting mem
and located relative thereto by a locating pin 10
which cooperates with a locating socket '|2
_ber and a portion of the legs of said metallicA
channel member, said legs extending beyond the
formed integrally with and in the bottom Wall
surface of saidv electrical insulating material, said
of the cup-shaped seat 63. By pressing the re
lease handle 56 toward the handle Ill, the jaw 60 air gap providing a means of improved ventila
tion,'and fastening means securing said channel
elements 28 and 3d may be separated for insert
member and insulating material to said current
ing an electrode between the jaw elements 34
and 28, or removing one therefrom.
The reac
conducting member in such a manner so as not
tion of the spring 6d on the insulating strips 42
to form an electrical path between said current
also functions to hold the shield 36 in the posi 65 conducting member and said channel member.
3. In a welding electrode holder, a current
tion as illustrated relative to the jaw member 2i).
conducting member provided with 1a clamping
In the embodiment of the invention illustrated
in Figs. 6 and 7, the construction is the same ex
jaw, electrical insulating` material’covering at
cept for the pivotal connection between the jaw
least part of said current conducting member, a
member 2@ and the release handle 56 and shield 70 metallic channel-shaped shield covering at least
'58 and the means for assembling the lower jaw
part of said electrical insulating material and in
sulated thereby from said current conducting
and shield. The release handle 56 and shield 58,
as well as the other parts of the jaw I4, in this
member, said electrical insulating material being
embodiment are exactly of the same construction
constructed and arranged relative’A to said‘cur
as those'illustrated in the previous embodiment. 75 rent conducting member to form an air gap
2,412,492
5
6
between said current conducting member and a
ing material, an electrical connection from a
source of current secured to said current con
portion of the web of said shield, said air gap
providing a mean-s of improved ventilation.
4. In a welding electrode holder, a current
ducting member, said electrical connection being
enclosed within said tubular handle of insulat~
ing material, a metallic channel member se
conducting member terminating with a clamping
cured to and insulated from said current con
jaw, electrical insulating material covering at
ducting member, a movable lever terminating
least part of said current conducting member, a
with a clamping jaw, said movable lever being
metallic channel member covering at least part
pivotally fastened to said metallic channel mem
of said-electrical insulating material-- said elec
trical insulating material being shaped to extend l() ber thereby providing for actuating the jaws of
the holder, said movable lever not having an
beyond the sides of said current conducting mem
electrical path from said current conducting
ber to thereby create an air gap between a por
member or the jaws of the holder.
tion of said current conducting member and a
9. In a welding electrode holder, a current con
portion of said metallic channel member, said
ducting member provided with a clamping jaw,
air gap providing a means of improved ventila
a tubular handle of insulating material to which
tion.
said current conducting member is removably se
5. In an arc Welding electrode holder, a single
cured, and through which an electrical connec
current conducting member having a current con
tion from a source of current extends to said
ducting cable directly attached thereto and ter
current conducting member, a metallic shield se
minating with a clamping jaw, a tubular handle
cured to and insulated and spaced from said cur
of insulating material to which said current con
rent conducting member to provide an air gap
ducting member' is removably secured, a metallic
therebetween, a movable lever terminating with
channel member secured to and insulated from
said current conducting member, a movable le
ver terminating with a clamping jaw, a pivot for
a clamping jaw and pivotally fastened to said
shield thereby providing for actuating the jaws
movably fastening said movable lever to said
current conducting member to provide for sepm
arating the jaws of the holder, and electrical in
sulating material associated with said pivot for
breaking the electrical path from said current
of the holder, said movable lever not having an
electrical path from said current conducting
member or the jaws of the holder.
conducting member to said movable level` so that
the current does no-t flow through said pivot.
ducting cable directly attached thereto and pro
vided with a clamping jaw, electrical insulating
material covering at least part of said current
conducting member, a metallic shield covering at
least part of said electrical insulating material, a
bushing of electrical insulating material recessed
in said current conducting member and forming
6. In an arc welding electrode holder, a current
conducting member having a current conducting
cable directly attached thereto and provided with
a clamping jaw, a tubular handle of insulating
material to vwhich said current conducting mem
ber is removably secured, a movable lever termi
10. In an arc welding electrode holder, a cur
rent conducting member having a current con
a part of fastening means to secure together said
nating with a clamping jaw, each of said clamp
metallic channel member, said electrical insu
ing jaws having secured thereto and insulated »
lating material and said current conducting mem»
ber, said fastening means not providing an elec
therefrom a metallic shield, said movable lever
and said current conducting member being pro
vided with a pivotal connection therebetween
trical path from said current conducting member
to said shield and including pin means passing
through said shield and insulating material and
providing for separating the jaws of the holder,
and electrical insulating material associated with 45 engaging said bushing.
ll. In a welding electrode holder. a current
said pivotal connection for breaking the electrical
conducting member provided with a clamping
path from said current conducting member
jaw, strips of electrical insulating material cov
through said pivotal connection so that current
ering part of said current conducting member, a
does not flow through said pivotal connection.
7. In an arc welding electrode holder, a current 50 metallic channel member receiving said electri~
cal insulating material and said current con
conducting member having a current conducting
ducting member, said electrical insulating mate
cable directly attached thereto and terminating
rial extending beyond the sides of said current
with a clamping jaw, said current conducting
conducting member to create an air gap between
member being removably secured to a tubular
handle of insulating material, a metallic shield 55 said current conducting member and a portion
of the legs of said metallic channel member,
secured to and insulated from said current con
said legs extending beyond the surface of said
ducting member, a movable lever terminating
electrical insulating material, said air gap pro
with a clamping jaw, said movable lever having
viding a means of improved ventilation, a sec
a pivotal connection with said currentu conduct
ing member thereby providing for separating the 60 ond clamping jaw pivotally associated and coop
erable with the aforesaid clamping jaw for hold
jaws of the holder, and electrical insulating ma
ing an electrode, and spring means between said
terial associated with said pivot for breaking the
second jaw and said insulating material for bi
electrical path from said current conducting
asing said jaws together.
,
member through said pivotal connection to said
12. A welding electrode holder according to th
movable lever so that current does not lhow 65
construction deñned in claim l wherein said fas
through said pivotal connection.
tening means further includes pin means having
8. In a Welding electrode holder, a current con
stems within said bushing and heads clamping
ducting member terminating with a clamping
against the sides of said channel members.
jaw, said current conducting member being re
EDWARD BRAZITIS.
movably secured to a tubular handle of insulat 70
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