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Патент USA US2412717

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. 17, 1946. '
'_1. E. co'rToN
2,412,717
ELECTRODE HOLDER
Original Filed Oct. l0. 1944
œN,
INVENTOR.
dof-m E. ÜOTTON
_
Patented Dec. 17, M1946
„
2,412,717>
UNITED STATES PATENT OFFICE
`lohn E. Cotton, Batesville, Miss.
Substitute for-abandoned application Serial No.
557,977, ûctober 1I), 1944. This application Sep
tember 12, 1945, Serial No. 615,797
1
4' claims. (ci. 21o-s)
This invention relates to holders for welding
2
It will be noted that the bolt 33 which secures
.the jaw 21 is somewhat closer to the shoulder I9
than is the bolt 3|, effecting an increase in rela
tive longitudinal movement of the jaws and
rods of that type in which the rod serves as an
electrode through which current is passed in es
tablishing a welding arc.
It particularly relates to an electrode holder L'i slower closing as iinal clamping occurs.
through which the rod may be readily clamped
i The jaw 25 is provided with a shoulder 35 which
and held at any desired angle to theholder and
seats against the shoulder I 9 and limits move
may be as readily released, as when it is largely
ment of the jaw about the bolt 3I, this shoulder
used up and it is desired to discard an unused
being so proportioned that the jaw 25 will extend
stub and replace it with an additional rod.
` parallel to the axis of the handle when the jaws
The objects of the invention are:
are clamped.
To provide a holder which is simple in construc
The jaw 21 comprises a resilient member 31,
tion and may be readily manipulated to ñrmly
preferably a hat strip of spring steel to which an
grip the electrode and establish a current lead
underlying block 21A of equal width is secured,v
thereto and therethrough during welding opera- ,
as by rivets 39, the block 21A stiffening the
tions and be as readily released;
clamping portion of the jaw. An eye 31A is
To provide such a holder which will effect
formed at the inner end of the resilient membery
the gripping of the electrode with a minimum of
to cooperate with the pivot pin 33 and form the
effort, and which when it has gripped the elec
hinge for the upper jaw. The member 31 is pref
trode will position it in parallelism with a plane 20 erably bowed downward between the hinge and
through the axis of the handle even though at an
clamp portions of the jaw.
angle, as is usual, in such plane to the axis.
Ears 1li, preferably parts 0f a U member, are
The means by which the foregoing and other
rigidly secured as by welding on opposite sides
objects are accomplished, and the method of their
of the jaw 25 and extend beyond the jaw 21,
accomplishment, will readily be understood from 25 These
jaws carry a pin 43, preferably a bolt,
the following specification upon reference to the
which
journals
a roller 45. The roller 45 con
accompanying drawing, in which:
tacts the member 31 and rolls therealong to ef
Fig. 1 is a side elevation of the holder showing
fect clamping cooperation of the jaw 21 with the
a fragmentary portion of .an electrode secured
jaw 25, or may be shifted reversely to allow their
between the jaws thereof.
release, as the case may be.
Fig. 2 is a plan of the holder; and
Current is fed to the holder from a suitable
Fig. 3 a longitudinal section taken as on the
source (not shown) through the usual feed wire
line III-III of Fig. 1.
41, which is clamped to the jaw 25 as by a clip
Referring now to the drawing in which the vari
49 and screw 5I. It will be noted here that the
ous parts are indicated by numerals:
35 feed wire is directly coupled to the jaw and that
II is a handle around which is an insulating
the handle II need not be of metal since no cur
sleeve I3 which is preferably secured to the han
rent is carried therethrough. It will be under
dle as by a screw I5 which may be covered by an
stood, therefore, that the handle may be of di
electric material, as Bakelite, and be used with
out the insulating sleeve I3 which is necessary
if the handle be metal, and that in either event
the handle is dielectric.
the handle I I and is held in place against the
In use, the jaw portions 25, 21 of the device
shoulder I9 by the insulation I3. Extending from
are
broken relatively to the handle portion II,
-.the enlarged por-tion I9 of the handle are side 45
about
the hinge centers 3| and 33, as to the
iianges 23, spaced apart vto snugly receive there
dotted positions 25X, 21X, the roller shifting to
between jaws 25 and 21 which are adapted when
ward the center 33 to the position 45X and al
closed to clamp against the electrode 29 and hold
lowing separation of the jaws to receive the elec
the electrode ñrmly therebetween.
trode. With the electrode 29 between the jaws
The jaws 25 and 21 are hingedly secured to the
they are forcibly returned to the position shown
flanges 23, as by pivot pins 3i, 33, respectively,
in Figs. 2 and 3, the roller moving along the
these preferably being bolts which may be readily
member 31 and effecting the clamping. In this
removed should it be desired to change the jaws
clamping action the jaws approach more and
for any reason and as readily replaced when the
more slowly as clamping is effected, gripping
additional insulating ring i1, usually of soft
rubber. Adjacent one end of -the handle is formed
a shoulder I9.
2| is a hand guard or shield which slips over
jaws are replaced or new ones substituted.
55 force being limited by the bending strength of
2,412,717
3
the resilient member 37. Closing movement also
effects a relative longitudinal movement of the
jaws which effects a rolling movement of the elec
trode if it be transverse to the jaws, or a draw
ing action therealong if it be alined with the
jaws, in either case insuring electrical contact
of the jaws with the electrode.
This application is a substitute for application
Serial No. 557,977, ñled October l0, 1944, by the
same inventor, and now abandoned.
I claim:
l. An electrode holder including an insulating
handle, metal jaws spaced apart at, and inde
pendently hinged to, one end of said handle and
extending longitudinally therefrom, and means
establishing a circuit lead to one of said jaws,
a first said jaw having rigidly secured thereto
intermediate its length a member embracing the
second said jaw, said member including a roller
contacting the remote side of said second jaw,
said second jaw including a resilient section and
a continuing rigid jaw portion and converging
from its hinge end toward said ñrst jaw and
curving into parallelism-therewith at said mem
ber, whereby separation of said jaws and release
of said electrode may be accomplished by deñec
tion of said jaws.
2. An electrode holder` including an insulating
4
curving toward parallelism therewith at said
member, whereby separation of said jaws and re
lease of said electrode may be accomplished by
deflection of said jaws.
3. An electrode holder including an insulat
ing handle, flat metal jaws spaced apart at, and
independently hinged to, one end of said handle
and extending longitudinally therefrom-` and
means establishing a circuit lead to one of said
jaws, a first said jaw having rigidly secured in
termediate its length a member embracing, and
contacting the remote side of said second jaw;
said second jaw including a resilient section and
a continuing rigid portion, converging from its
hinge end toward said first jaw and curving to
ward parallelism therewith at said member,
whereby separation of said jaws may be accom
plished by deflection of said jaws, said iirst jaw
having at its hinge end a shoulder cooperating
with an end portion of said handle to limit re
turn movement about its said hinge.
4. An electrode holder, which comprises an in
sulating handle having a pair of spaced ñanges
extending from one end thereof, pins carried by
said ñanges and laterally spaced apart, a pair
0f substantially flat, metal jaws, each having an
end portion disposed between said flanges and
respectively hinged on said pins, a first of said
jaws having rigidly secured thereto a member
independently hinged to, one end of said handle 30 embracing and contacting the remote side of said
ñrst jaw, the other of said jaws converging from
and extending longitudinally therefrom, and
said hinge pin toward said ñrst jaw and curv
means establishing a circuit lead to one of said
ing into parallelism therewith at said member,
jaws, a ñrst said jaw having rigidly secured there
whereby separation of said jaws may be accom
to intermediate its length a member embracing,
and. contacting the remote side of said second 35 plished by deflection thereof and shift of said
member, and a circuit lead secured in electrical
jaw, said second jaw including a resilient section
contact with said jaws.
and a continuing rigid portion, and converging
JOHN E. COTTON.
from its hinge end toward said iirst jaw and
handle, flat, metal jaws spaced apart at, and
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