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Патент USA US2405305

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Aug, 6, 1946.
J. F. HENNESSY ETAL
OVEN DOOR SEAL
Filqd may 24, 1945
Patented Aug. 6, 1946
' '
2,45,305
UNITED STATES PATENT
FlCE
2,405,305
OVEN DOOR SEAL
John F. Hennessy, Denver, 0010., and John I.
Thulander, Chicago, 111., assignors to Geo. D.
Roper Corporation, Rockford, 111., a corporation
of Illinois
Original application November 12, 1940, Serial No.
365,262. Divided and this application May 24,
1943, Serial No. 488,119
1
11 Claims. (Cl. 211-69)
2
This application is a division of our copending
open positions. At 18 and 19 are indicated clo
application Serial No. 365,262, ?led November 12,
sures for the compartments 2i! and 21 beneath
the ovens 1'3 and 14, respectively. Usually one of
1940, which resulted in Patent No. 2,339,398, is
sued January 18, 1944.
these compartments has a broiler drawer therein,
' This invention relates to the doors of ovens for
in which event the closure 18 or 19, as the case
domestic cooking ranges and is particularly con
may be, forms the hinged front on said drawer.
cerned with improved sealing means therefor.
The burners for the ovens 13 and 1d are provided
The principal object of our invention is to
under the oven bottoms 22 in the upper portions,
provide oven door seals designed to have wiping
of the compartments 2!! and 21. Where there
contact with the outer peripheries of the doors in 10 were no seals for the oven doors 15 and 16, the
operating efficiency of the ovens was not as high
the closing thereof, whereby to give assurance
of more complete sealing than is possible Where
as desired, due to the heat losses around the
the sealing action relies for its effectiveness upon
doors, and, of course, this heat loss became a
more noteworthy objection when the ovens were‘
the compression of sealing means between the in
ner faces of the doors and the stove front, such 15 insulated, as herein illustrated. The seepage
seals obviously necessitating fairly accurate
around the doors also had a tendency to discolor
alignment of all of the parts involved, such as is
the range front, or at any ‘rate necessitate more
frequent cleaning than would otherwise be neces
not usually obtainable in the quantity production
of ranges.
.
sary. In the application of seals to the oven
Still another important object consists in the 20 doors 15 and 16, it also is desirable to provide
provision of door seals for domestic cooking
seals at least around the sides and tops of the
ranges, the application of which to the range in
closures 18, and 19 to cut down heat losses and
accordingly further increase the over-all e?i
volves a minimum of special construction of the
ciency, no seals being necessary along the bot
range, the strips being applicable to certain ex
isting ranges with little or no change in the con
toms of these closures, inasmuch as the bottoms
of the compartments 2i} and 21 are provided with
struction of the doors or front structure.
openings to admit air to support combustion at
The invention is illustrated in the accompany
ing drawing, in which
the burners as well as to mix with the gas deliv
ered to the burners to form combustible mixtures.
Fig. 1 is a front view of a gas range equipped
with door seals provided'in accordance with‘ our 30 We have, therefore, provided three vertically ex
invention;
Fig. 2 is a horizontal section on the line 2—2
of Fig. 1;
Fig. 3 is a vertical section on the line 3—3 of
Fig. l; and
Fig. 4 is a horizontal sectional detail of the
tending sealing strips, 23, 24, and 25, and three
horizontally extending sealing strips 26, 2'1, and
28, to seal all four edges of each of the oven
doors 15 and 16 and only the upper edges and
lateral edges of the doors or closures 18 and 19,
whereby effectively to prevent seepage from the
middle vertical sealing strip taken on the line
ovens 13 and 111 and at the same time greatly
4-4 of Fig. 1.
reduce heat losses from the compartments 211 and
‘
21 without interfering with the adequate supply
The same reference numerals are applied to
corresponding parts throughout the views.
' 40 of air to the oven burners. Strips'23 and 24 reach
Referring ?rst mainly to Fig. l, the reference
numeral '1 designates a domestic gas range, al
though, of course, the door seals of our invention
are applicable to the ‘oven doors of domestic
cooking ranges generally. 8 is the cooking top of
the range, and 5 is the panel closing the front
of the burner box compartment it] under the
cooking top. The gas burners for the cooking top
from the bottom of the compartment 21! to the
top of the oven 13, and the strips 24 and 25 bear
the same relation to the compartment 21 and
oven H1 above the same. The strip 26 extends
-. the full width of the two ovens l3 and 14, [whereas
the strips 2'1 and 28 are individual to the two
ovens and the compartments therebeneath, the
strip 27 extending between strips 23 and 24 and
the strip 28 extending between strips 24 and 25.
are not shown, but have the cocks thereof con
trolled by knobs 11, and at 12 are indicated the 50 The general arrangement of the strips 23-28
drip pans provided in the bottom of the burner
forms the subject matter of another copending
box compartment. At 13 and 14 are indicated the
application, Serial No. 488,118, ?led May 24, 1943.
baking ovens, for which the doors 15 and 16 form
All of these strips 23-28, as hereinafter more
closures, these doors being mounted on hinges 1'1
clearly appears, cooperate with the outer periph
to swing downwardly to substantially horizontal
eries of the oven doors, 15 and'lB and doors or
2,405,305
3
4
doors, this provision for drainage of the condensa
closures i8 and is, having wiping contact there
with for sealing purposes.
tion is considered desirable if not absolutely es
rfhe oven doors l5 and i6 each comprise an
sential.
outer porcelain enameled panel 29, the marginal
?ange 39 of which has a telescoping fit over the
marginal flange 3! of an inner porcelain enameled
panel 32, the space between the panels 29 and
32 being ?lled with insulating material, as indi
cated at 33.
The doors or closures l8 and 19 are
similarly constructed. The ?anges 39 de?ne the
outer peripheries of the doors l5, l5, l8, and it‘,
heat losses around the doors, thus protecting the
porcelain enameled front panels against discol
oration and avoiding the necessity for so much
and are ?at and smooth and, therefore, adapted
for good wiping sealing contact With the sealing
strips 23-28. All of these strips have generally
c-shaped sections arranged to be compressed by
1
contact with the edges of the doors as they are
closed, as indicated at 24a, 25a, 25a, and 28a, it
being understood that the portion 23:: of the
strip 23 is like the portion 25a of the strip 25 and
that the portion 21a of the strip 2'! is like the
portion 28a of the strip 28.
The strips 23, 25, and 26 are all substantially
s-shaped in cross-section and are adapted to be
mounted by a half-portion that is substantially
C-jshaped and to be retained by spring clips 38,
as fully, described and claimed in the parent ap
plication.
The strips 24, 2?, and 28 are all adapted to be
secured in place in a similar manner, namely, by
means of sheet metal strips 43 of L-shaped cross- ,
section, each-of the strips 24, 21., and 28 being
of generally P-shaped cross-section, the loop of
~
It should be clear from the foregoing descrip
tion that we have provided simple and inexpen
sive sealing strips, which by wiping contact with
the outer peripheries of the doors and compres
sion in the closing of the doors effectively seal
the ovens against the objectionable seepage and
attention in the way of cleaning to keep the same
presentable. It is also clear that the application
of the sealing strips 23-28 in the manner herein
disclosed requires. little or no change in the con
struction of the range otherwise. The effective
ness of the sealing action is furthermore not de
pendent upon close accuracy in the alignment of
the various parts going to make up the range
front, there being easily enough yield in the re
silient compressible and expansible sealing strips
23-28 to compensate for whatever irregularities
may occur in the spacing of parts involved in the
sealing action.
It is believed the foregoing description conveys
a good understanding of the objects and advan
tages of our invention. The appended claims
have been drawn with a view to covering all
legitimate modi?cations and adaptations.
We claim:
7
i
1. The combination of a frame, closures there
on having the edge portions thereof in closely
spaced substantially parallel relation, and a
and 28a in Figs. 2, 3, and 4, to receive the one
leg 43a of, the strips 48, while the leg of the letter .,..i spring metal sealing strip comprising an attach
ing portion secured to the frame behind said
P, indicated at 2417 and 28b, is engaged by the
closures, a longitudinally extending compressible
other leg 48b of the L-shaped strips £13 for anchor
sealing portion in substantially right angle rela
age of the strips 25, 2?, and 28 to the front of the
range. Thus the L-shaped strip 48 cooperating
tion to the attaching portion and of generally
O-shaped section, one longitudinal edge portion
with the sealing strip 24 is fastened by screws 49
of which is rigid with the attaching portion and
to the vertical parting‘ rail 5% formin° a portion
of the front frame of the range, a front corner
the other edge portion of which is freely movable
rail 5!‘ of ‘which also appears in Fig. 2. The strip
toward and away from the ?rst edge portion,
48 is slotted, as indicated at 52, to facilitate entry
whereby the C-shaped section opens rearwardly
under the‘. heads of thescrews' 49. The strip 25 15» toward the frame, said sealing portion being dis
is held against lateral displacement with respect
posed between the edge portions of the closures
to the strip 48 by means fof the beaded edge 53
and compressed by engagement of'said edge por
which engages the edge of the leg 43?) of the
tions with the opposite sides thereof‘, and a rela
strip 63.. The leg 48b is widened only at the
tivel'y'rigid supporting strip of‘generall'y L-shaped
points where itis anchored by the screws 158, and
section having one leg of the L overlying the
at, those points the bead 53 is cut away to permit
attaching portion of said sealing strip and se
extension of said‘ portions beyond the bead. How
cured with it to the frame and the other leg of
ever, the strips 35 provided in connection with
the L projecting forwardly from the frame into
the sealing strips ‘127V and 28 can be of uniform
the C-shaped sealing portion to support the latter
width throughout the length thereof, there being : for compression of either side portion more or
no need for the provision of any bead 43 on the
less independently of the other side portion by
sealing strips 21 and 2B. Screws 54 are shown
engagement therewith of either of‘ the closures.
fastening the strips 48 to the horizontal parting
2. The combination of a frame, a closure and
rails 55 that also form parts of the front frame
a panel thereon having the edge portions thereof
of the range along with the rail 56 and corner
in closely spaced substantially parallel relation to
posts‘ 5|. The strips 21 and 28 and their fasten
one another, and a spring metal sealing strip
ingv strips 435 preferably have registering open
comprising an attaching portion secured to the
ings 55 provided therein, as indicated in Fig. 3, ' frame, havingv a longitudinally extending com
in register with the lower portions of the hori
pressible sealing portion in substantially right
zontal channels 5": provided in the parting rails
angle relation to the attaching portion. and of
the letter P being C-shaped, as indicated at 24c
55', whereby to permit drainage of condensation
generally C-shaped section, one longitudinal edge
that is apt to collect behind the strips 2'! and 25,
especially inthe preheating of the ovens. ‘Where
no provision is made for the drainage of condensa
tion, there is likelihood of the parts rusting.
portion. of which is rigid‘ with the attaching por
tion and the other edge portion of which is freely
movable toward and away from the ?rst edge
portion’, gwhereby, the C-shaped section opens
rearwardly toward the frame, said sealing por
tion. being disposed between the edge portions of
the panel and closure and compressed by engage‘
Where the oven doors were not provided with
seals, the condensation collecting on the inner
side of the doors trickled down and collected along
the bottom of the doors, but where the sealing
strips have contact with the bottom edges of the
mentof said edge portions with'the opposite-sides
‘ thereof, and a relatively rigid supporting strip of
2,405,305'2
5
6
generally L-shaped section having one leg of the
attaching portion of said sealing strip relative to
L overlying the attaching portion of said sealing
the supporting strip.
strip and secured with it to the frame and the
other leg of the L projecting forwardly from the
frame into engagement with the inner side of
the bend at the vjuncture of the longitudinal edge
portions of the C-shaped sealing portion to sup
port the latter ‘for compression of either longi-,
tudinal edge portion more or less independently
of the other longitudinal edge portion by engage
ment thereof between said panel and closure.
3. The combination of a frame, closures there
on having the edge portions thereof in closely
spaced substantially parallel relation, and a spring
metal sealing strip comprising'an attaching por
tion secured to the frame behind‘said closures, a
longitudinally extending compressible sealing
portion in substantially right angle relation to
the attaching portion and of generally C-shaped
section, one longitudinal edge portion of which is
rigid with the attaching portion and the other
edge portion of which is freely movable toward
and away from the ?rst edge portion, whereby
the C-shaped section opens rearwardly toward
the frame, said sealing portion being disposed
between the edge portions of the closures and
compressed by engagement of said edge portions
with the opposite sides thereof, and a relatively
rigid supporting strip of generally L-shaped sec
’
5. ‘The combination of a frame, closures there- '
on having the horizontal edge portions thereof in
closely spaced substantially parallel relation, and
a generally" horizontally disposed spring metal
sealing strip comprising an attaching portion se
cured to the frame behind said closures, a longi
tudinally extending compressible sealing portion
in substantially right angle relation to the longi
tudinal ‘upper edge of said attaching portion and
of generally C-shaped section, one longitudinal
edge of which is rigid with the attaching portion
and the other edge of which is freely movable
toward and away from the ?rst edge portion,
whereby the C-shaped section opens rearwardly,
toward the frame, said sealing portion being dis
iposed between the edge portions of the closures
and compressed by engagement of said edge por
20 tions with the opposite sides thereof, and a rela
tively rigid supporting strip of generally L-shaped.
section having one leg of the L overlying the
attaching portion of said sealing strip and se
cured with it to the frame and the other leg of
the L projecting forwardly from the frame into
the C-shaped sealing portion for lateral support
thereof.
6. The combination of a frame, closures there
on having the horizontal edge portions thereof in
taching portion of said sealing strip and secured
closely spaced substantially parallel relation, and
a generally horizontally dis-posed spring metal
with it to the frame and the other leg of the L _
sealing strip comprising an attaching portion
tion having one leg of the L overlying the at
projecting forwardly from the frame into the
C-shaped sealing portion to support the latter for
compression of either side portion more or less
independently of the other side portion by en
gagement therewith of either of the closures, the
free edge portion of the attaching portion of said
sealing strip having a bead formed thereon pI‘O
jecting outwardly relative to the frame alongside
secured to the frame behind said closures, and a,
longitudinally extending compressible sealing
portion in substantially right angle relation to
the longitudinal upper edge of said attaching
' portion and of generally C-shaped section, one
longitudinal edge of which is rigid with the at
taching portion and the other edge of which is
freely movable toward and away from the ?rst ‘
the longitudinal edge portion of the ?rst, men
edge portion, whereby the C-shaped section
7 tioned leg of the L-shaped supporting strip,
opens rearwardlytoward the frame, said sealing
whereby to prevent lateral displacement of the
portion being disposed between the edge portions
of the closuresiand compressed by engagement‘of
said edge portions with the opposite sides thereof,
that portion of the frame supporting said sealing
attaching portion of said sealing strip relative
to the supporting strip.
4. The combination of a frame, a closure and
strip de?ning therewith a ‘channel behind the at
a panel thereon having the edge portions thereof
taching portion of the strip and below the upper
in closely spaced substantially parallel relation
one of said closures arrangedto catch moisture
to one another, and a spring metal sealing strip
comprising an attaching portion secured to the 50 draining from the inner side of said upper clo
sure, the attaching portion of said sealing strip
frame, having a longitudinally extending com
pressible sealing portion in substantially right
angle relation to the attaching portion and of
having one Or more drain openings provided
therein communicating with the bottom of said
moisture collecting channel.
generally G-shaped section, one longitudinal edge
portion of which is rigid with the attaching por 55 7. A structure as set forth in claim 6, including
a relatively rigid, supporting strip of generally
tion and the other edge portion of which is freely
movable toward and away from the ?rst edge
portion, whereby the C-shaped section opens
rearwardly toward the frame, said sealing por
tion being disposed between the edge portions of
the panel and closure and compressed by engage
L-shaped section having one leg of the L over
lying the attaching portion of said sealing strip
and secured with it to the frame and the other
leg of the L projecting forwardly from the frame
into the C-shaped sealing portion, the ?rst men
tioned leg of said L-shaped supporting strip
ment of said edge portions with the opposite sides
having one or more openings provided therein in
thereof, and a relatively rigid supporting strip of
' register with the openings in the attaching por
generally L-shaped section having one leg of the 65 tion of said sealing strip. I
L overlying the attaching portion of said sealing
8. The combination of a frame, a closure and
strip and secured with itto the frame and the
a panel thereon having the horizontal edge por
other leg of the L projecting forwardly from the
tions thereof in closely spaced substantially par
frame into the C-shaped sealing portion, the free
allel relation to one another, and a generally
edge portion of the attaching portion of said 70 horizontally disposed spring metal sealing strip
sealing strip having a bead formed thereon pro
comprising an attaching portion secured to the
jecting outwardly relative to the frame alongside
frame, and a longitudinally extending compres
the longitudinal edge portion of the ?rst men
sible sealing portion in substantially right angle
tioned leg of the L-shaped supporting strip,
relation to the longitudinal upper edge of said
whereby to prevent lateral displacement of the 75 attaching portion and of generally C-shaped
2,405,305
7
section, one longitudinal edge of which is rigid
with the attaching portion and the'other edge
of. which is freely movable toward and away from
the first edge portion, whereby the C-shaped. sec
tion opens rearwardly toward the frame, said
sealing portion being disposed between the edge
portions of the closure and panel and compressed
by engagement of said edge portions‘ with the op‘
posite sides thereof, that portion of the frame
supporting said sealing.strip de?ning therewith a
channel behind the attaching portion of the strip
and below the upper one of said closure and panel
arranged to catch moisture draining from the
inner side thereof, the attaching portion of said
8
rigid. supporting strip of generally 'L-shaped
section having one leg of the L overlying the
attaching portion of said sealing strip and se
cured with it to the frame and the other leg of
the L projecting forwardly from the frame mem
ber into engagement with the inner side of the
bend at the juncture of the longitudinal edge
portions of the C—shaped sealing portion to pro
vide lateral support for said longitudinal edge
portions in‘ the compression thereof by the clo
sure member.
11. A sealing strip adapted for use between a
closure member and a frame member comprising
a sealing strip having an attaching portion
sealing strip having one or more drain openings
adapted to be secured to the frame member, and
a longitudinally extending compressible sealing
portion in substantially right angle relation to the
attaching portion and of generally C-shaped sec
9. A structure as set forth in claim 8, including
a- relatively rigid supporting strip of generally
tion, one longitudinal edge portion of which is
L-shaped section having one leg of the L over-v 20 rigid with the attaching portion and the other
lying the attaching portion of said sealing strip
edge portion of which is freely movable ‘toward
and away from the ?rst edge portion, whereby
and secured with it to the frame and the other
leg of the L projecting forwardly from the frame
the C-shaped section opens rearwardly toward
provided therein communicating‘ with the bottom
of said moisture collecting channel.
into the C-shaped sealing portion, the ?rst men
tioned leg of said L -shapedsupporting strip hav
ing one or more openings provided therein in
register with the openings in the attaching ‘por
tion of said sealing strip.
10. A sealing strip adapted for use between a
closure member and a frame member comprising
a sealing strip having an attaching portion
adapted to be secured to the frame member, and
having a longitudinally extending compressible
sealing portion in substantially right angle rela
tion to the attaching portion and of generally
‘C-shaped section, one longitudinal edge portion
of which is rigid with the attaching portion and
the other edge portion of which is freely movable
\ the frame member, said sealing portion being
disposed for wiping engagement with and com
pression by the edge portion of the closure mem
ber, and a relatively rigid supporting strip of
generally L-shaped section having one leg of the
L overlying the attaching portion of said sealing
strip and. secured with it to the frame and the
other leg of the L projecting forwardly from the
frame member into the C-shaped sealing por
tion to provide lateral support for the latter in
the compression thereof by the closure member,
., the free edge portion of the attaching portion
of said sealing strip having a bead formed there
on projecting outwardly relative to the frame
member alongside the longitudinal edge portion
of the ?rst mentioned leg of the L-shaped sup
whereby the C-shaped section opens‘ rearwardly 40 porting strip whereby to prevent lateral displace
ment of the attaching portion of said sealing
toward the frame member, said sealing iportion ,
being disposed for wiping engagement with and
strip relative to the supporting strip.
compression by one of said longitudinal‘ edge pore
JOHN F. HENNESSY.
toward and away from the ?rst edge portion,
tions of the closure member, and a relatively
JOHN I. THULANDER.
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