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Патент USA US2412744

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Dec. 17, 1946.
Filed July 24, ‘1944
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Patented Dec. 17, 1946
Ted Nelson, San Leandro, Calif.
Application July 24, 1944, Serial No. 546,415
5 Claims. (01. 72-16)
My invention relates to welding studs; and par
ticularly to welding studs useful in a wall con
struction in which metal lath is utilized to re
tain an insulating layer against a steel wall and
to be concealed in a relatively thin plaster sur
face coating.
One of the objects of the invention is the pro
vision of a stud having means embodied there
with for securing to the stud a separate broad
slipped over the shank to lie snugly against the
broad head; and the shank is bent over with a
hammer to secure all together. A ?nishing plas
ter coat of any desired composition may then be
applied over the metal lath, the thickness being
such as to completely bury and hide the bent
over shank. The point on the stud permits the
stud to be pushed through the insulating layer
at any desired point and scratch a metal-to
head, and also securing against the head a sheet 10 metal contact with the wall for welding thereto;
of metal lath or other foraminated material.
and the shank provides a simple and effective
Another object of the invention is the provision
means for holding the metal lath against the stud
of a rapid method of applying a sheet of metal
head while also providing an end by which the
lath and concealing plaster on the outer surface
stud is conveniently held in the welding machine.
of a layer of insulation lying against a steel wall,
In greater detail, my invention comprises a
the whole being tied securely together.
stud body 2, having a pointed end 3 at one end
The over all object of the invention is the pro
and an annular shoulder 4 at the other end. Ex
vision of an effective and at the same time thor
tending beyond the shoulder is a shank which
oughly practical means for fastening a plaster
for convenience of description may be divided in
or composition layer to a steel plate usually, con 20' to three parts. The base of the shank is cylindri
stituting a wall; the element of practicality in
cal and forms a head 6 the same diameter as
cluding consideration of cost of manufacture
the body. Rising from the bead 6 is the flat
and time required for application.
neck 1 of strap-like cross section, formed by
My invention possesses other objects and fea
pressure of a die which widens the shank in the
tures of value which with the foregoing will be
view seen in Figure l, and narrows it in the view
explained in the following description. It is to
shown in Figure 2. Beyond the neck, the original
be imderstood that I do not limit myself to the
cylindrical stock extends in a tip 8.
showing made by the said description and the
Each of the three shank parts play an impor
drawing as I may adopt variant forms of the
tant role in the application and function of the
invention within the scope of the appended 30 stud. The bead 5 centers the ?at broad disk
forming the thin head 9, which seats against the
Referring to the drawing:
shoulder. The head is formed with the slotted
Figures 1 and 2 are elevations showing the stud.
aperture l l as shown in the center, so that after
The planes of projection are at right angles to
the stud has been welded to the wall l2,‘ the head
each other.
35 may be pushed over the shank.
Figure 3 is an elevation similar to that of Figure
The tip 8 provides a secure means by which
2, but including the broad attachable head.
the stud is gripped in the chuck of the welding
Figure 4 is a plan view of the head separated
machine; and the ?attened neck permits the
from the body of the stud.
shank to be bent over easily to position the tip
Figure 5 is a horizontal sectional view through 40 against the metal lath l3, which previously has
a wall in which my stud is used to secure the wall
been laid against the heads, with the shanks
elements together. A portion of the ?gure is
projecting through.
omitted to shorten the view.
My invention has an important application in
In terms of broad inclusion, my invention com
ship building, and for illustration it can be as
prises a pointed stud adapted to be thrust through 45 sumed that the metal wall l2 separates a hot
an insulating layer of glass wool lying against a
furnace room ‘or stoke hold from crew quarters
steel wall or backing plate, and then to be welded
or other space from which it is desired to ex
to the backing plate. The stud is provided with
clude conducted heat. Layers N5 of glass wool
a shoulder and a shank extending from the body
or other comparable thermal insulation are ?rst
‘of the stud beyond the shoulder. A separate broad 50 laid against the wall, and held manually while a
head which is conveniently made as a disk, may
few studs held in the chuck of a welding ma
be passed over the shank to seat against the
chine are thrust through the layer and welded
shoulder, in which position it presses into the
to the wall. The length of the stud is of course
surface of the insulation layer to retain it in place.
determined by the thickness of the insulating
A sheet of expanded metal or metal lath is then 55 layer; and proportions are such that the shoulder
down against the‘ lath to hold it against the
, 4 of the stud buries itself in the material with
head and the head against the shoulder. .
’ the ?at race or the shoulder slightly below the
3. A metal lath stud comprising a body, a shoul
der disposed on the body, a shank of strap-like
After the ?rst few holding studs are put in,
cross section extending from the shoulder and
others for the permanent holding of the insu
. having at its juncture therewith a bead, and a
lation are applied. Then a head 9 is pushed down
separate head apertured with a slot to pass over
over each shank to seat against the shoulder
the shank and an enlargement or the slot ' to
around the bead 6 of the shank, and a sheet of
seat around the bead and against the shoulder.
metal lath i3 is laid against the heads. The
4. A metal lath stud comprising a body, a shoul
shanks are next bent over/with hammer blows to 10
der disposed on the body, a shank extending from
hold the metal lath in place. Finally a layer ll
the shoulder ?rst in a cylindrical bead and then
01' plaster is applied as a ?nish, burying and
in a wide thin portion, and a separate head hav
concealing the bent-over shanks and tips and
ing a slotted aperture to pass over the shank
interlocking in the metal lath so that a wall sur
face l8 desirable for living quarters is provided 15 and lock against the shoulder around the bead
and under the wide portion of the shank.
to receive paint or other treatment.
5. The method of applying imperforate insu
I claim:
lating sheets to a metal wall which comprises
1. A metal lath stud comprising a body, a shoul-~
placing a sheet of the material against the wall,
der disposed on the body, a bendable shank ex
tending from the shoulder, and a separate head 20 pushing a metal stud through the sheet to en
to seat on the shoulder and having an aperture
through which the shank passes to provide a tip
over which the metal lath may be passed to lie
against the head.
gage the wall and then welding the stud to the
wall while embedded in the sheet, applying a
head to the stud to lie against the sheet with the
end of the stud projecting beyond the head, lay
2. A metal lath stud comprising a body, a shoul 25 ing a sheet of metal lath on the head with the
projecting end of the stud extending through the
der disposed on the body, a shank extending from
lath, bending over the projecting stud end to hold
the shoulder, a tip on the free end of the shank,
the lath on the stud against the head, and apply
and a separate thin disk forming a head and aper
ing a plaster layer over the metal lath to conceal
tured to pass entirely over the tip and to seat on
the shoulder to support the metal lath, said shank 30 the stud ends.
being bendable whereby the tip may be bent
TED unison.
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