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Патент USA US2406942

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Sept0 3, 1946.
H. J. BUTTNER »
2,406,942 `
SEALED DOORS
Filed Oct. 25, 1945
3 Sheets-Sheet l
SePt- 3, 1946.
H. J. BUTTNER
SEALED DOORS
2,406,942
v
Filed oct. 23, 1943 -
5 sheets-sheet' 2
70
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66
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62
Bnventor
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Patented Sept. 3, 1946
UNITE
2,406,942
STATES _ PATNT
2,406,942
OFFICE
SEALED Doons
Horace J. Buttner, Indianapolis, Ind., assignor to
General Motors Corporation, Detroit, Mich., a
corporation 0f Delaware
Application October 23, 1943, Serial No. 507,399
6 Claims.
(Cl. 20-16)
l
2
This invention relates to closures such as doors
to exclude or keep out noises and gases which
are produced in rooms or chambers for testing
5, showing a modiñed form of closure having
hinged doors instead of sliding doors.
Figure 5 is a section on the line 5_5 -of Figure 4.
Figures 6 and 8 are views, similar to Figure 3,
aircraft engines.
The usual testing space or room for aircraft ' '
engines comprises a room in which the engine is ~
of a modiñcation.
Figure 7 is a section on the line 'I-l of Figure 6.
mounted on a block, while adjacent thereto and
separated by a wall having a transparent panel
and a door, there is a second room for the ob
With reference .to the drawings, the numeral 2
indicates the wall between adjacent rooms, and
4 :the floor ofthe rooms. The wall and floor may
be made of any suitable material such as concrete,
are a plurality of instruments and controls to 10 brick, wood and plaster, etc. The wall is -pro~
test and to operate the engine and determine its
vided with a door opening 6, and to each side of
reliability or efficiency.
the Wall at the opening there is applied an angle
In making these tests, it has been found that
sha'ped frame member 8 which extends across the
the door between the engine room and the opera 't top of the opening 6 and down the sides. At the
tor’s room has allowed noxious fumes from the 15 bottom of the opening and depressed iin the iioor
engine to enter the operator’s room, and there
4 a channel-shaped frame member Iii is secured.
also has been transmitted a considerable amount
This frame member I0 has the flange I2 directed
server and tester and in this second room there "
of objectionable noise caused by the operation of
the engine. Both of these are objectionable from
the operator’s standpoint, and in a measure de
v
inwardly of the door. `Secondary frame members
I4, extendingalong the sides and top of the open
20 ing 6, are secured to »the frame members 8 by
tract from his careful observance of the instru
means of the bolts IS. A fabric or rubber strip
ments and the observance of the operation of the
I8 is placed between the main frame members 8
engine.
and the secondary frame members I4 to form a
To eliminate the transmission of noises and
seal. At the bottom of the opening 6 and over
noxious fumes from the engine compartment to 25 the flanges I2 there are secured the secondary
the operator’s compartment, the closure between
frame members 20 which cooperate with the
the two rooms was redesigned so that there will
frame members I4.
be one door on each side of the wall or partition,
At each side of the opening 5 there is mounted
and in closed position these doors will rest against 30 a sliding closure or metal door 22 and, as the
a sealing strip of yieldable material such as rub
structure of both doors and the mounting thereof
ber, and by evacuating part of the air between
are similar, the structure and mounting for but
the two doors, the outside air pressure causes the
one will be described. The door extends down
doors to be tightly pressed against the sealing
wardly into the channel of the lower frame mem
strip to make a closure which is substantially
ber I0, and at its lower part has secured thereto
gastight and substantially soundproof. This clo
a iiexible flap 24 which overlaps and covers the
sure, it was found, removes the disadvantages of
channel II) when the door is in closed position.
The ñap 24 may be secured to the door by means
the noxious fumes and diminishes the noises to a
of the metal strip 26 and the bolts 28.
degree where they are unobjectionable.
The closure of the invention is also applicable 40 At the top of the door there are secured two
brackets 3û each of which has a flange 32 at its
to other uses such as refrigerators where it is
upper end. A bolt 34 extends through the flange
desired to prevent exchange of heat and the
and is retained thereon by a nut 35. The bolt
escape of annoying gases such as ammonia fumes.
passes through a head 38 and suitable nuts 4E!
On the drawings:
45 above and below the head hold the bolt in place
Figure 1 is a face view of the partition or wall
in the head. Extending laterally from the head
between two adjacent rooms with the sliding door
are axles on which are mounted wheels 42 which
shown in elevation in closed position.
run on tracks 44 at the bottom of a channel
Figure la is an enlarged detailed View of the
shaped member 46 secured to a bracket 48 which
door mounting.
50 is secured to the frame ymembers 8 by means of
Figures 2 and 3 are sections on an enlarged
bolts. The track extends beyond the width of
scale on the lines 2-2 and 3_3 of Figure l, the
the door as is shown in Figure 1, and by sliding
intermediate part of the doors and the wall being
the door to the left the door opening 6 is exposed
broken away to facilitate the illustration.
to enable passage from one room to the other.
Figure 4 is .a section on the line 4-4 of Figure 55
Each auxiliary frame member I4 at each side
aioaofia
fi
4
of the opening lâ has secured thereto a channel
iron 5l) in which there is secured a soft rubber
strip
This channel 50 and the rubber 52 ex
opening lli and a strip of rubber fabric 9i) or other
resilient material is secured to the frame 88. 'I‘he
tend along the sides of the opening and across
frames S8 at the bottom of the door are mounted
in the channels Se.
the to-p while at the bottom a rubber strip 54 is
secured by means of bolts and nuts 56 to one of
the iianges of the U-shaped frame member l0.
In the closed position oi" the doors, the door edges
In the position oi the parts shown in Figure
6, if air be forced through the inlet pipe 92
into the conduit Ella, the air pressure will press
overlap slightly the rubber strips 52 and 54, and
tight seal.
the doors against the material Si) to form a
When the air pressure is relieved,
if the air between the doors or in the opening 6 10 the doors 22 can be slid into the recess 'i8 to
as shown in Figure 2 can be exhausted, tending
enable access to the testing room.
to create a vacuum in the space between the
In Figure 8 a chamber or cabinet 95 is mounted
doors, the air pressure from the outside will cause
in the wall lll. This chamber is open at its in
the doors to be pressed tightly against the rubber
ner and outer sides and these openings have
strips 52 and 5d and form a tight seal.
15 doors 22a hingedly mounted thereover. The
In order to enable the evacuation of the air,
doors are mounted to swing inwardly of the cab
there is provided a pipe or conduit El] which leads
inet '94.
from the inter-door space to the outside, and by
The door openings have the edge flanges y9S
connecting any pump to the exit 62 of the con
and a rubber or fabric strip 90 is secured to
duit Gli, the air in the space between the doors can 20 the flanges. With the parts in the position
be partially evacuated to reduce the pressure and
shown, air forced through the inlet pipe 92 and
to give what may be called a pneumatic seal be
through the conduit will cause the doors 22a to
tween the chambers. It has been found in prac
be pressed against the rubber SB to form a tight
tice that this seal will prevent the noxious gases
seal. When the pressure is relieved, the doors
from the engine reaching the operating room and 25 may be moved inwardly on their hinges to enable
will also eliminate the objectionable noises caused
passage through the chamber 94.
by the operation of the engine.
I claim:
It desired, suitable expansion joints 54 may be
l. In a wall having an opening therethrough,
provided in the iioor.
a closure for said opening comprising two doors
In Figure e, the structure is shown as applied 30 controlling access into said opening from both
to a closure which has hinged doors 22’ instead
sides of the wall, means secured to the wall and
or" the sliding doors
shown in Figures l-3 in
supporting said doors for movement >to open
clusive. The doors 22’ are hinged at 65 and each
positions enabling access into said opening and
door opening e is provided with the frame mem~
to closed spaced positions closing said opening,
bers ß’ at both edges thereof, These frame mem 35 sealing means adapted to be contacted by said
bers are secured to the walls 2 by means of the
doors when closed, the ñrst-mentioned means
bolts 63. The frame members B’ extend on the
and wall defining with said doors and sealing
i’our sides of the opening and have at their outer
means a closed space when said doors are closed,
edges the soit rubber sealing strips 52', secured
and means communicating with said closed space
by the slats lili, and against these soft rubber
to enable changing the air pressure in said closed
strips the edges of the doorsI 22’ abut when the . _«
space to cause said doors to be pressed against
doors are in closed position, as is best seen in
said sealing means in substantially gastight rela
Figure 4l. rl‘he doors 2?! may be made of any
tion.
suitable material, and in the drawings they are
2. In a wall having an opening therethrough,
shown as being made oi a panel comprising lami
a
closure for said opening comprising doors
nated wood held together between edge frame . _
secured to the sides of the wall and controlling
members ‘lit
access into said opening, peripheral sealing means
It desired, the walls 2 may be provided with
mounted
near the edges defining said opening
any suitable soundprooiing material l2.
and adapted to be contacted by said doors when
With the doors in the position shown in Figure
closed, the doors when closed being spaced and
4i, a pump is applied to a conduit 6€! (not shown
closing said opening to define with the wall a
in Figures ll and 5, but see Figures 1 and 3) to
closed space, and a conduit communicating with
exhaust the air between the doors 22’ to create
said closed space to enable changing the air pres»
a zone of reduced pressure in the space between
The outside air pressure will cause 55 sure therein to cause the doors to be pressed
against the sealing means in substantially gas
the doors to be pressed tightly against the rubber
tight relation.
strips
to seal the closure and form a sound«
3. In a wall having `an opening therethrough, a
proof and gas proof closure in the wall 2.
closure for said opening comprising a door se
In Figures 6-3 inclusive, two species of sealed
cured to each side of the wall, the doors when
door arerdisclosed which operate with air under 60 open
admitting access to said opening and when
pressure instead of with exhausted air. In Fig
closed overlying said opening, sealing means eX
ure 6 the wall It is provided with a door opening
the doors.
tending 'entirely about and around .said opening,
‘E6 and a recessed wall part 13. A metal frame
the
doors when closed defining with the wall a
member El] is placed on one side of the wall and
metal frame members 82 and S4 are placed at 65 closed space, and a conduit communicating with
said closed space to enable reduction vof air pres
the opposite side of the opening at the ends of
sure therein to cause the doors to be pressed
the narrow wall parts lila and 'hib formed by
against the sealing means in substantially .gas
the recess lil, The bottom of the door opening
tight relation.
`
.
has the channels 33 countersunk therein and
4. In a wall having an opening therethrough, a
which extend into the recessed part 'F8 to the 70
closure for said opening comprising spaced doors
end thereof. At the top of the opening the doors
controlling passage therethrough, means securing
22 are suspended by a structure such as shown
the doors within said opening and having periph
in Figures la and 2.
eral sealing means near the edges delining said
An angle-shaped metal frame 88 is rigidly
mounted at the inner and outer sides of the door 75 opening, said wall having a recess providing with~
2,406,942
5
6
in the wall an extension of said opening adapted
changing the air pressure in said closed space to
cause the doors to be pressed against the sealing
means in substantially gastight relation.
6. A closure for an opening extending through
a wall, said closure comprising two spaced doors
to receive the doors when open, said sealing means
.being in continuous contact with the doors when
closed, and a closed space being provided by the
closed doors with the ñrst-mentioned means and
said extension in the wall, and a conduit com
municating with said closed space to enable in
creasing the air pressure therein above atmos
pheric pressure to cause the doors to be pressed
against the sealing means in substantially gas 10
tight relation.
5. A closure for an opening extending through
a Wall, said closure comprising two doors, means
for securing the doors in substantially gastight
relation to the wall and for supporting the doors
for movement to open positions enabling access
into said opening, and sealing means adapted to
be contacted continuously by said doors near their
peripheries when in their closed positions, the
first-mentioned means and closed doors defining
a closed space, and said closure having means
communicating with said closed space to enable
and means for supporting the doors for move
ment to open positions enabling access into said
opening and to closed positions closing said open
ing, said means being adapted to be mounted in
said opening in substantially gastight relation to
the wall and having sealing means adapted to
be contacted continuously by the doors near their
peripiheries when in their closed positions, the
ñrst-mentioned means being substantially gas
tight and deñning with the closed doors a closed
space, and the first-mentioned means having
means to provide communication with said closed
space to enable changing the air pressure therein
to cause the doors to be pressed against the
20 sealing means in substantially gastight relation.
HORACE J. BUTTNER.
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