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Jan. 7, '1947.l
' Filed NOV. 24, 194.4
Patented Jan. 7, 1.947
2,413'311 ’
lliarryk G. Coordes, Detroit, Mich., assignor to
Briggs Manufacturing Company, Detroit, Mich.,
a corporation of Michigan
Application ~November 24, 1944, Serial No. 564,963
1 Claim. (Cl. 4-166)
the exterior appearance of the lavatory by elimi
nating the use of unsightly pipes, has notI only
sins, sinks, tubs or the like and particularly to an
had the disadvantage of increasing considerably
article of this kind formed from sheet metal.
the weight of the lavatory and the cost of» manu
An object of the present invention is to provide
an article of the above kind formed from sheet 5 facture due to diflicult and expensive coring op
erations but also has been objectionable owing
metal and having an overflow channel or conduit
to the formation and accumulation of rust on
of improved construction pressed or otherwise
the inside surfaces of the cast iron overflow which
formed from sheet metal and attached to the
cannot be prevented since these surfaces are not
back wall of the basin or sump to provide an
overflow connection between the upper back wall 10 capable of being porcelain enameled. Moreover,
drain opening and the drain pipe communicating
' in the case of pressed metal lavatories, where it
This invention relates to lavatories, wash ba
with the bottom drain outlet of the basin or sump.
A further object of this invention is to provide
a pressed metal article having a basin, bowl or
sump provided with a channel shaped overño-w
has been suggested to press or draw the overflow
conduit integrally out of the metal of the basin,
this has either proved impossible from a practical
standpoint or has necessitated resort to a weld
conduit connecting the upper back wall drain
seam along the back and bottom of the basin re- f
opening with the drain pipe and formed with con
quiring expensive finishing operations.
tinuous laterally extending marginal ?langing
In accordance with the present invention an
overflow conduit is first separately formed from
sheet metal so as to provide a channel of adequate
conforming to the contour of the back and bottom
walls of the basin and secured thereto as by spot
welding the ñanging to said walls.
Another object of the invention is to provide a
pressed metal article of the kind mentioned above
having a basin, bowl or sump provided with a sep
arately formed overflow conduit formed of pressed
metal which is porcelain enameled o_n the inside
structural strength having continuous outturned
ilanging shaped longitudinally to lit the contour
of the basin, and thereafter this member is ap
plied to the back and bottom of the basin and
f spot-welded thereto at preferably closely spaced
points entirely around the `ñanging thus produc
ing a strong, rigid, light and exceedingly inex
pensive construction. All surfaces of the overñow
conduit including the portion thereof formed by
the following description and appended claim,
reference being had to the accompanying draw 30 the back and botto-m of the basin are porcelain
enameled thus preventing the formation of rust.
ing forming a part of this speciñcation, wherein
Referring to they drawing illustrating, by way
like reference characters designate corresponding
'of example, one embodiment of the present inven
parts in the several views.
as well as the outside surfaces thereof.
Other objects of this invention will appear in
Fig. 1 is a plan View of a lavatory or wash basin
tion as applied to a lavatory or wash basin formed
embodying the present invention.
35 from a single blank or sheet of metal, such as
sheet steel, the plumbing article, which may also
Fig. 2 is a section taken substantially through
be a sink, laundry tub or bathtub, comprises a
drawn basin or bowl lil having an upright back
wall I I merging on a curve I la of relatively small
Fig. 3 is a section taken substantially through
lines 3-3 of Fig. 2 locking in the direction of the 40 radius into a bottom wall I2 which in turn merges
into an- upwardly sloping curved front Wall I3.
The basin or sump is also provided with upright
Before explaining in detail the present~ inven
side walls lila which merge seamlessly into the
tion it is to be understood that the invention is
back and front walls. The front and side walls
not limited in its application to the details of
construction and arrangement of parts illustrated 45 of the basin terminate at their upper edges around
the three sides of the basin in a laterally extend
in the accompanying drawing, since the inven
ing ledge I4 of suitable width to support articles
tion is capable of other embodiments and of being
and this continuous ledge terminates in a depend
practiced or carried out in various ways. Also it
ing apron I5 also extending continuously around
is to be understood that the phraseology or termi
nology employed herein is for the purpose of de 50 the basin. The lower edge of the apron I5 ter
minates along the lower edge thereof in a con
scription and not of limitation.
lines 2-2 of Fig. 1 looking in the direction of the
Heretofore, in the production of lavatories of
some cast iron types overiiow conduits have been
cast integrally with the back and bottom walls of
tinuous inturned ñange I 6.
The ledge I4 around the front and sides of the
basin merges into a rearwardly extending hori
the basin. This construction, although improving 55 zontal ledge I'I extending the full width of the
basin rearwardly of the upright back wall II
wardly extending splashback or panel i8 formed
with a top horizontally extending ledge I9 of
tension 2‘2b beneath the bottom of the basin.
The channel is rigidly and permanently secured
to the basin in suitable manner, such as by spot
welding or seam-welding the flanging to the back
thereof and this back ledge terminates in an up
suitable depth which extends the full width of
and bottom Walls of the >basin entirely around the
the basin. This ledge I8 is flanged along its
rear edgeto provide a wall flange 20. The de~
pending apron I5 extends continuously around
the front and sides of the lavatory and termi
edges of the ñanging. Spot-welding is in the
present instance indicated at points 26 which are
The back wall II near its upper end is pierced
tion 22h is pierced to provide an opening in line
with the drain opening I2b, and a tubular fit-
preferably close together continuously around
the flanging to provide a tight joint between the
nates at the back in line with the Wall flange 10 juxtaposed surface of the flanging and basin.
The bottom wall of the overflow conduit por~
2li, as shown in Fig. 2.
to provide a number of overflow drain openings
2l, three being shown by way of example, and>
ting 21 extends downwardly through these open
each of these openings is formed with a contin 15 ings. The upper flanged edge of the ñtting lies
within the embossment I2a and is drawn down
nous outwardly flanged edge 2m. The bottom
tightly to provide a seal by means of a coupling
I2 of the basin is embossed at I2@ and the bot
nut 28 which connects the drain pipe 30 to the
torn of this embossment is pierced to provide a
drain opening I2b. The overflow openings 2l
fitting 2'I, the latter being provided with suit
and the bottom drain opening I2b are c-onnected 20 able openings 29 through which the water over
flowing into the conduit 22 passes into the 'ñt
by means of an overflow conduit 22 which is
ting 2l and thence into the drain pipe 30. It
pressed or otherwise formed from a single blank
will be seen that since the overflow conduit is
or strip of sheet metal. This conduit is formed
yformed as a structural channel having a flat
into a channel in cross-section as shown in Fig.
3, so as to have adequate structural strength 25 bottom wall the coupling nut 28 may be drawn
up tightly against the bottom of the channel
and rigidity and is shaped longitudinally so as
to provide a seal through the medium of an
to conform generally to the contour of the an
interposed gasket while at the same time obviat
gularly related back and bottom walls l I and I2.
ing any danger of distorting or collapsing the
The channel or conduit 22, therefore, has a ver
tical portion extending substantially parallel to 30. conduit at the locality of the union between the
fitting 2‘5 and the drain pipe 30.
the back wall Il, a curved portion 22a formed
It will be understood that the term lavatory,
on a greater radius than the radius of the curve
wash basin or the like used in the claim is to
Ila of the basin so as to position the bottom
be constructed as comprehending plumbing ar
22h of the channel or conduit at an increased dis
ticles of the .kind hereinbefore mentioned in*
tance from the bottom I2 of the basin` The
cluding sinks, bathtubs, laundry tray units and
bottom 22h of the channel or conduit extends
laundry tubs in addition to the article shown in
somewhat beyond the drain opening I2b and
the drawing.
thence ,is bent upwardly to provide an inclined
portion 22o terminating in a ’flange portion 23
engaging and conforming to the shape of the 40 A lavatory or wash basin comprising a pressed
metal bowl including a `bottom and an upright
adjacent bottom Wallof the basin. The op
back wall having drain and overilow openings
posite end of the overflow channel or conduit
respectively, an overflow conduit connectingv
is provided with a flange 24 engaging the back
said openings and comprising a channel formed
wall of the basin immediately above the outlet
openings 2l. Also, the sides of the channel or 45 from a separate blank of metal and having a
flat base and outwardly extending wallsl ter
conduit 22 are formed with outturned flanges 25
minating in side and end flanging extending
which are shaped and bent to engage smoothly
entirely around the channel, said conduit being
the back and bottom walls of the basin. The
bent to conform said flanging to the contour of
flanged portions 23, 24 and 25 form a continuous
flanging extending entirely around the sides and . said walls and said flanging being welded to said
walls to provide a uniform ‘ght contact of the
ends of the channel or conduit 22 and are con
juxtaposed surfaces of the ilangingand walls,
structed so as to fit smoothly and uniformlyV
said base of the channel having a portion sub
against the adjacent surfaces ofthe back and
stantially parallel to the bottom of the bowl pro
bottom walls 22 of the basin, it being noted that
vided with an opening aligned with said drain
the side flange portions 25 are bent intermediate
their ends on a curve corresponding to the curva
opening and said base beyond the opening there
in sloping upwardly and forwardly to engage the
ture I Ia of the basin.
adjacent end ilanging with the bottom of the
The foregoing construction provides a conduit
in which the channel is relatively narrow along
its vertical extension at the back of the basin 60
and is relatively deep along its horizontal ex
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