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_ Oct. 8, 1946.
B, GROSS Em
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2,408,847
SPOTWELD EDGE GAUGE .
Filed Nov. 21; 1945
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Noct- 8. 1946.
B. GROSS ETAL
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2,408,847
SPOTWELD EDGE GAUGE
Filed Nov/21, 1945
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Patented Oct. 8, 1946
2,408,847
UNITED STATES PATENT OFFICE
2,408,847
SPOT-WELD EDGE GAUGE
Bernard Gross and Leo W. Qornwall, San Diego,
Calif" assignors to Rohr Aircraft Gorporation,
Chula Vista,.Calif., a corporation of California,
1
Application November 21, 1945, Serial No. 629,948
6 Claims.v (Cl. 21~9--4)
Our invention relates to spotweld edge gauges,
and its objects are to provide a mechanical means
for guiding the formation of a line of spotwelds at
a uniform distance from one of the edges of the
sheets of material which are being welded to
gether by a conventional spotwelding machine;
to adjust and‘ adapt such guiding means for use
with electrodes long or short of varying lengths,
to furnish means for readily turning out of
the way for the time being such guiding means
when its use is not required. Other objects will
appear from the drawings, and as hereinafter set
forth and described.
In the process of spotwelding as heretofore gen
erally carried on, it has been found dif?cult by
2
trode holder of a conventional spot welding ma
chine, and to be ?rmly secured to said electrode
holder by the thumb screw Ill in threaded en
gagement with ears H integral with said sleeve,
adjacent to and separated by the split therein.
Preferably extending over one side of the middle
and outer portions of the rod are the regularly
disposed teeth or notches t2, the purpose of which
will shortly be disclosed. Included in said car
riage, is the sleeve l4 enclosing the rod 7 and
longitudinally slidable thereon; the elongated key
la affixed to the under side of said rod. and en—
gaging with the keyway IS in the adjacent wall
of said sleeve serving to prevent‘ rotation of said
the workman, particularly at high speeds, to form 15 sleeve is while at the same time permitting the
same to be slid along such rod; and the stop pin
and maintain a line or sequence of spotwelds
.13 affixed to the outer end of said rod preventing
equidistant from the, edge of the welded work as
said sleeve from sliding off the same. Rotatably
is required by many working drawings. This is
mounted upon said sleeve Ill, between the rim 53
because the workman depending entirely upon
thereof and clevis 29 thereon, is the‘ open-ended
the eye to judge such distance and to apply the
box 35, having a barrel shaped bottom I 6: in slid
welds is unable to secure accurate and uniform
ing contact with said sleeve, upright sides I 1' and
results. It is by reason of this situation, and to
i8, and a top it secured to said sides by pins or
meet this problem that we have conceived and
set screws 20; the said'top' having integral there
developed our invention, resulting in the produc
tion of a gauge which is the subject matter of‘
with and extending inwardly therefrom, the
this application, and which fully secures and‘
round rod 21, upon which is pivotally mounted
one end of the bracket 22; a screw 23 in threaded
engagement with an opening in the wall of said
illustrating a preferred form of our invention, in
which similar numerals of designation refer to
similar parts throughout the several. views, and
in which_
bracket and extending therethrough and contact
ing with said rod, serving normally to prevent
said bracket from rotation. Upwardly extend
edge gauge, showing-itattached to the-lower elec
ing from the other end of saidbracket 22 and
?rmly secured thereto is the bolt 52, upon which
is rotatably mounted the roller 24, having the
trode holder of a conventional spotwelding ma
inner metallic sleeve 24a, ?bre insulation layer
Figure l is a side elevation of our spotweld
chine, and the roller of'said, gauge in contact with
the edge of the two sheet welded material;
Fig. 2 isa plan view of the gauge and‘ electrode
holder shown in Fig. 1 with the contact roller
and welded material removed;
Fig. 3 is a section on line 3-301’. Fig. 1, looking
in the direction of the. arrows;
Fig. 4 is a section partly in end elevation on
25.; and steel outer jacket or cover 2.6.
In order to move the roller 24 nearer to or
‘farther away from the electrode 21, I preferably
secure by means of screws 28, inv an annular re
cess provided therefor in. the outer end of the
sleeve 14, the clevis 29, to the walls of which is
pivotally secured by‘ the pin 36 within. opening
thereof the ratchet lever 31:, having the inner
line 4'--4 of ‘Fig. 2, with the roller restored looking 45 face of its head 32 provided with serrations
shaped to engagewith the teeth l2 of the rod 1,
in the direction of the arrows;
and‘ having a stud on its arm 33. engaging with
Fig. 5 is a section on line 5—-5 of Fig. 1, looking
in the direction of the arrows, and
Fig. 6 is a section on line 6——6 of Pig. 4, looking
in the direction of the arrows.
Referring to the drawings, our invention com
prises a rod 1 and an edging roller assembly and
‘carriage 8 therefor, slidably mounted upon said
red, the inner end of said rod having a split sleeve
, shaped to make contact with the lower elec- :
an expansion spring 34 connected by a stud 3'!
with a lip‘ 35 integral with the sleeve l4; said
spring operating normally to keep the serrations
of head 32 in spring yielding engagement‘with
the teeth of said rod.
When it is desired to adjust the roller for use
with a shorter electrode the shank of which does
not reach above the plane of the lower end of
said roller and is a little below such plane, the
2,408,847
screw 23 may be loosened, and the roller 24 in
verted and turned 180 degrees from an upright
to a downwardly depending position, and said
screw 23 again tightened. When in such posi
thereon toward and from said electrode, and
means for detachably clamping said assembly to
said rod in adjusted position thereon.
2. A spotweld edge gauge, comprising a rod,
tion, and when the sheets 38 and 39 to be welded
are in position on top of the lower electrode, the
roller 24 may be moved into the desired contact
means for securing one end of said rod to the
lower electrode holder of a spot welding machine,
an edging roller assembly and carriage therefor
mounted upon said rod to slide toward and from
with the edges of said sheets.
said holder, and means for clamping said assem
For the purpose of temporarily moving the
bly to said rod in adjusted position thereon.
roller 24 out of the way of the operator when it 10
3. A spotweld edge gauge, comprising a rod,
becomes necessary or desirable to weld without
means for securing one end of said rod to a spot
the use of our improved gauge, and without de
welding machine adjacent to one of the electrodes
taching the same, we preferably install in the
thereof, a carriage mounted upon said rod to
space 4|] between the upright sides H and ll! of
slide toward and from said electrode, an edging
the box 36, the body 4| of the lever 42, pivotally 15 roller mounted upon said carriage and positioned
mounted upon the pin 43 extending through the
to be moved to abut against edges of the mate
sides of said box; the protruding outer arm of
rial to be welded when in contact with said elec
said lever acting as a handle 44, and the inclosed
trode, and means for clamping said carriage to
inner arm 45 having a downwardly depending
said rod to secure adjustment of said roller in
20
tongue 46 shaped and positioned normally to
engage with the Opening 41 extending through
the upper walls of the barrel I6 and the sleeve
I4. An expansion spring 48 engaging with a
stud 49 on the ear 5|] integral with the enclosed
end of lever 42 and also engaging with a stud
5| embedded in the underside of top |9, serves to
respect to the edges of said material.
4. A spotweld edge gauge, comprising a rod
having serrations extending along one side there
of, means for securing one end of said rod to the
lower electrode holder of a spotweld machine,
a carriage mounted upon said rod to slide toward
and from said holder, an edging roller mounted
keep the tongue 46 in spring yielding engagement
upon said carriage and positioned to be moved
with the opening 41. Upon the handle 44 being
to abut against the edges of the material to be
manually depressed and the arm 45 caused to
welded and resting upon the electrode of said
move upwardly, the tongue 46 will be lifted out of 30 holder, and ratchet means mounted upon said
engagement with the opening 41, and the entire
carriage for contacting said serrations and
box 36 as a whole carrying the roller 24 and ad
clamping said carriage to said rod to secure ad
jacent parts may be turned downwardly out of
justment of said roller in respect to the edges of
the way, without disturbing the ratchet lever 3|
said material.
and its engagement with the teeth |2 on rod 1,
5. A spotweld edge gauge, comprising a rod,
and without disturbing the longitudinal adjust
means for clamping one end of said rod to the
ment of roller ‘24 in respect to the electrode 21.
lower electrode holder of a spotweld machine,
Later, as is obvious, the box 36 may be quickly
a carriage pivotally mounted .upon said rod to
rotated back its original position and again locked
slide toward and from the electrode of said hold
therein through reengagement of the tongue 46 40 er, an edging roller mounted upon said carriage
with the opening 41.
and positioned to be moved to abut against the
Preferably, the material of all the parts of our
edges of material to be welded and resting upon
improved gauge should be of non-magnetic con
said electrode, means connected with said can»
ducting materials in order that the magnetic
riage for locking the same in upright position
flux or ?eld induced around the electrode during
on said rod and permitting said carriage when
welding will not interfere or affect the move
ment of such parts while serving the purposes of
our invention.
Our invention may be embodied in other
unlocked to be inverted thereon, and means for
clamping said carriageto said rod to secure ad
justment of said roller in respect to the edges of
material.
speci?c forms without departing from the spirit 50 said
6. A spotweld edge gauge, comprising a rod,
or essential characteristics thereof. The pres
ent embodiment, as above set forth, is therefore
to be considered in all respects as illustrative and
not restrictive, the scope of our invention being
indicated by the appended claims rather than by
the above description, and all changes which
come within the meaning and range of equiv
alency of the claims are therefore intended to
be embraced therein.
means for clamping one end of said red to the
lower electrode holder of a spotweld machine, a
carriage mounted upon said rod to slide toward
and from the electrode of said holder, an edging
roller pivotally mounted upon said carriage so
to move from an upright to an inverted position
and to be adjusted while in one of such positions
to abut against the edges of the material to be
welded and resting upon said electrode, and
What we claim and desire to secure Letters 60
means for clamping said carriage to said rod
Patent is:
when in adjusted position in respect to said
1. A spotweld edge gauge, comprising a rod,
means for securing one end of said rod to a spot
welding machine adjacent to one of the elec
trodes thereof, an edging roller assembly and 65
carriage therefor mounted upon said rod to slide
electrode.
_
BERNARD GROSS.
LEO W. CORNWALL,
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