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Патент USA US2412787

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DWI 17, 1946.
c. M. VERHAGEN
2,412,787
JETTISONING MEANS FOR THE ESCAPE PANELS OF AIRCRAFT
Filed'May 22, 1943
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’ JETTISONING MEANS FOR THE ESCAPE PANELS OF AIRCRAF'i|
Filed May 22, 1943
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Dec. 17, me.
‘ c. M. VERHAGEN
2,412,181
JETTI‘SQNING MEANS FOR THE ESCAPE PANELS OF AIRCRAFT
Filed May 22, 1943
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INVNTOR.
(‘é/"4510x111 Vér/zqgem
BY
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'
MP” WW
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‘ij’atentecl Dec. 17, 1946
2,412,787
UNITED'STATES PATENT OFFICE
JETTISONING MEANS FOR THE ESCAPE
PANELS OF AIRCRAFT
Christian M. Verhagen, Elkhart, Ind., assignor to
The Adlake‘ Company, Chicago, 111., a corpora
tion of Illinois
Application May 22, 1943, Serial No. 487,997 >
5 Claims.
.
1
(Cl. 244-121)
2
.
This invention has to do with aircraft con
mediate rail assemblies of the escape panel, at
the location of the sliding window in thepanel,
struction, and is particularly concerned with
the problem of affording ready means of escape
for the occupants from the pilot’s compartment
taken respectively on the lines 9-9‘ and lit-.10
of Fig.
or other enclosure in the event it becomes neces
sary to get out quickly.
The purpose of the invention is to provide, in
association with an escape panel, means for in»
‘
Other more speci?c objects and advantages of
they invention will be apparent to those skilled in
the art upon a full understanding of the con
struction, arrangement and operation of the new
panel jettisoning means.
‘While the invention is of particularly great
value in connection with airplanes, gliders,
.dirigibles and other aircraft, because of the ever 20
present possibility of the occupants having to
in some measure to enclosures generally.
A preferred embodiment of the invention is
presented herein by way of exempli?cation, but
itwill of course be appreciated that the inven
tion is capable of incorporation in other struc
turally modi?ed forms coming equally within
the scope of the appended claims.
In the accompanying drawings:
Fig. 1 is a side view of a pilot’s compartment,
which compartment is provided at its opposite
sides with two hatch-like openings which are
normally closed by two escape panels equipped
with the jettisoning means of the invention;
Fig. 2 is a top view of the pilot’s compartment,
‘showing both of the escape panels;
Fig. 3 is a ‘verticalsection through the port
side of the compartment, at the location of the
escape panel in that side, taken on the line 3-3
of Fig. 2 ;
Figs. 4, 5 and 6 are fragmentary vertical sec
tions through the escape panel, corresponding re
spectively to the top, bottom and intermediate
rail assembly sections shown in Fig. 3, taken re
,
‘
through the‘intermediate vertical rail assembly
in the panel, at the location of the sliding window,
dependable, and serves normally‘ to hold the
bail out when in the air or having to avoid being
trapped by ?re when on the ground, it will be
understood that the ‘invention is also applicable
l
Fig. 12 is a fragmentary horizontal section
means is simple, easy to operate and absolutely
~
l
line H-_H of Fig. 1;
stantaneously jettisoning such panel, which
panel securely in position.
1;
Fig. 11 is a fragmentary horizontal section
through the front edge of the escape panel, at
the location of the sliding Window, taken on the
taken on the line l2—l2 of Fig. 1;
Fig. 13 is a side view of the port escape panel,
removed from the pilot’s compartment; and
Fig. 14 is a fragmentary perspective view of
the locking strip used in holding the escape panel
in position.
7
.
Referring in more‘ detail to the drawings, it
will be observed that the pilot’s compartment of
an airplane is shown somewhat fragmentarily at
It! in Figs. 1 and 2. This compartment
which is located immediately to the rear of the
windshield H—is glazed to afford good vision
in several directions, and. is‘ closed except for
small sliding windows [2 in the forward portions
of its sides. The sides of the compartment are
curved upwardly and inwardly, and are provided
with escape hatches l3 of generally rectangular
shape. The hatches l3 are normally closed by
30 escape panels I 4 of the same shape. The win
dows l2 are preferably but notn‘eces‘sarily, lo- .
catecl within the borders of the escape panels.
While two escape panels are shown—one on the
port side and the other on the starboard side
. the present invention is not concerned with
‘either the number or the locations of the panels.
It has to, do only with the means employed for
mounting and releasing an escape panel, without
regard to either its location or its shape. As
both sides of the pilot’s compartment are sub
stantally identical, only the construction atthe
port side will be described.
The escape hatch l3 in the port side of the
compartment is framed by an upwardly and rear
45 wardly inclined top frame member l5 (Fig. 4),
a horizontal bottom frame member l6 (Figs. 5 ‘
and 9), a vertical front frame member t‘! (Fig.
spectively on the lines 4-4, 5-5 and 6-5 of
11) and a vertical rear frame member I8 (Figs.
Fig. 1;
7 and‘ 8). The front and rear frame members
Figs. 7 and 8 are fragmentary horizontal sec 50 I1 and I 8 are curved upwardly and inwardly
tions through the rear edge of the escape panel,
in conformity with the curvature of the side of
taken respectively on the lines 7-? and 8—-—8
compartmnt at those stations. The four frame
of Fig. 1;
,‘Figs. 9 and IQ are fragmentary vertical sec
tions through-respectively the lower and inter
members I5, [6, H and IS, in addition to rein
forcing. the side of the compartment at the loca
tion of the hatch, provide locking formations for
2,412,787
A locking strip 4| is positioned in the channels
38, with portions of the strip protruding from the
channels into laterally compressed engagement
cooperation with the corresponding marginal
portions of the panel It.
The escape panel I4 includes an upwardly and
with the inner faces 40 of the adjacent frame
members of the hatch. This locking strip is pref-7
erably formed of rubber or other stiff ?exible ma
terial.‘ The strip 14 I. which is made slightly over
rearwardly inclined top rail member l9 (Fig. 4),
a horizontal bottom rail member 2%) (Figs. 5 and
9), a vertical frontrail member 2| (Fig. 11) and
a vertical rear rail'member 22 (Figs. .7 ‘and 8).
size,"is inserted progressively under pressure into
the channels 38, starting at either end of the strip.
curved upwardly and inwardly in conformity with
the curvature of the side of the compartment at 10 "The compression of the material of the strip, with
its tendency to expand against the jaw-like pro
those stations. The panel ‘I4 also includes a
The front and rear rail members 2i and 22 are
jecti'ons39 in the channels, serves to prevent ac
horizontal muntin 23 (Figs. 6 and 10) ‘interme
cidental displacement of the strip from the chan
diate the top and bottom rail members l9 and 20,
"nels,
and the ‘resiliently compressed condition of
and a vertical muntin 24 (Fig. "12) ‘intermediate
the front and rear rail members 26 and 22. The .15 'the‘projectingportions of the strip serves to
further ‘insure against such displacement. The
upper portion of the panel 14, above the horizon
strip 4 I, when in its locking position in the chan
tal muntin 23, and the rear half of the ‘lower
nels 38 in the panel in laterally compressed en'
portion of the panel, are glazed respectively with
gagement‘ with the inner faces 40 of the frame
transparent panes 25 and 26. The panes '25 and
26 are held in place. by removable glazing strips 20 members of the hatch, is subjected only to direct
shearing stress at‘th'e' junction between the ‘panel
21 which ?t into grooves 28 in the surrounding
and the hatch. ‘The strip possesses ample
members.
strength ‘and rigidity to withstand the peak shear-r
ing stress to which subjected in service. The strip
The sliding window l2-which occupies the
front half of the lower portion of the panel |-4_
is provided at one‘of its ends—preferably its rear
end-with a pull handle~42 (Figs. 1 and 8). By
pulling ‘hard on this handle any person within the
compartment can quickly remove the strip 4'!
‘from about the panel. As soon as *‘the strip has
beenv removed the panel will no longer have-any
thing to hold it in‘ place and will sail off into
consists of a sash 29,‘ which'sash is glazed with a
transparent pane 3|]. The sash 29 is slidably
mounted in vertically spaced guide channels 3|
and 32 which are formed respectively on the hor
izontal muntin 23' (Fig. 10) of the panel and the
bottom rail member 20 (Fig. 9) of the panel. '
The window 12 is adapted to be slid rearwardly
from its normally close'd'position in the front half
space, leaving the hatchropen.
of the lower portion of the panel into an inwardly
I claim:
'
a
'
1. An ‘enclosure containing an escape-opening,
offset out-of-the-way position ‘behind the pane
26 in the rear half of'the lower portion of the
a panel normally closing the-openingsaidpanel
being provided exteriorly of the enclosure with
marginal ?anges whichoverlie the edges of the
rearwardly extending continuations 3|’ and 32'
opening in the enclosure,andlbeing provided-in
of the guide channels~3|> and ‘32. The-construc
teriorly of the enclosure with marginal grooves,
tion and mounting of the window i2 have ‘noth
‘ing to do with the'jettisoning means-which con 40 and a locking strip of rubber-like materiah-re
movably positioned in the grooves, said strip
vst'itutes this invention, the provision of a window
protruding from the grooves into compresse'dllat
of any kind in the escape panel being entirely
eraleng'agement with the inner facesof theen
optional so far as the invention is concerned.’
closure adjacent the‘opening, and being man
The panel 14 ?ts snugly within the hatch i3 in
the side of the compartment, with the outer sur- a ually removable from the inside of ‘the panel,
progressively along said edges, and said panel
face of the panel flush with ‘the outer surface of
being free to move outwardly ‘away from the~en
the compartment. The‘ bottom rail member 2|]
closure upcnthe strip being removed, to provide
of the panel rests‘upon the bottom frame member
panel, in which latter position it is supported in
a free and ‘clear escape opening.
(6 of the hatch and is provided on its'under side
' 2. An enclosure'containing-an escape opening,
with a shallow groove 33 (Figs. 5 and 9) which 50
a
panel normally ‘closing the-opening, and having
?ts over a low rib 34 on the upper side of the
laterally extending ‘portions engaging theoutside
frame member 16. The groove‘ 33 and rib 34 are
'of'the enclosure, a-strip of ?exiblematerial on
‘the‘inside of the enclosure for locking the panel
in position in the opening, said strip frictionally
engagingtportions of‘ both‘the enclosure and the
panel in interlocked association-with‘the same
both curved in ‘cross’ section, and the ‘rib ‘34 is
undercutiat 35 on its outer face whereby to per
mit the upper edge of the panel to be ‘swung into
and out ‘of position with the lower edge of ‘the
panel pivoting on the loweredge of the hatch.
The upper rail member I9‘ and ‘the front‘and
rear rail members 2| ‘and 22' of the panel [4 are
provided with ?anges 36 (Figs.34,'7, 8 and 11)
which are disposed substantially flush with‘the
outer face of the panel ‘in overlapping engage
ment'with the outer faces 3'! of‘the- correspond
(30
ing‘frame members 15,11 and l8.'of the hatch [3.
The rail members l9, “and 22 are'provided, in
wardly of the ?anges 36, with ‘seteback ‘channels
provide'a ‘free and clear ‘escape ‘opening.
'
v3. An enclosure containing an escape, opening,
138'which open toward the ‘corresponding frame
members. The'channels '38 are provided'on their
a panel removably mounted in said-opening,
?anges on said panel engagingthe outside‘ faces
of the‘enclosureadjacent the opening, a read
outer sides with sharp jaw-like‘ projectionsBS
which terminate ‘substantially in line with the
inner faces 40 of theframe members‘ [5, l1 and
118. The channels 38 are ‘connected together and
ily ' removable compressible strip frictionally ‘se
cured to the inside of the panel-'and1in'"c0m
pressed engagement with the inner faces 'of'the
extend about the front, top ‘and reari'mar'g'ins
jof} the i panel i 4 ‘ in‘ ‘ the‘ general. ‘form'fof an‘ ‘in- ’
‘verted U.
'
'
and extending up "one of’the side" edges ‘of the
panel, across the top‘ edge, and down- the other
side edge, anda handle attached-'to'the strip ad
jacent'one of the ends-of the latter for use'in
disengaging the strip progressively from its’ fric
tional engagement with the enclosure and-the
panel, whereby’ to unlock‘ the panel and-free it"for
outward movement away ‘from the‘ enclosure‘ to
'>
‘enclosure- adiacent-fthe'opening, said 'compres
sible "strip being“ manually" detachable ‘from both
2,412,787
the panel and the enclosure whereupon the panel
is free to move outwardly away from the en
closure to provide a free and clear opening.
4. An enclosure containing an escape opening,
a panel normally closing the opening, means on
one edge of said panel forming a separable hinged
connection with one edge of said enclosure, means
6
5. An enclosure comprising a wall having an
escape opening, a panel assembly for normally
closing said opening removably mounted in said
opening, said panel assembly having an inner
side facing toward the inside of said enclosure,
cooperating means on said panel assembly and
said enclosure which permits removal of said
on the remaining edges of said panel engaging
panel assembly from said opening in a direction ,
the outside of the remaining edges of said en
outwardly from said enclosure and prevents re
closure which prevent the panel from moving in 10 moval of the same in a, direction inwardly into
wardly of the enclosure, a marginal groove on
said enclosure, readily removable resilient means
the inside of said panel along said last men
mounted on said inner side of said panel assembly
tioned edges, a ?exible locking strip frictionally
and engaging adjacent portions of said. enclosure
engaged in said groove and extending laterally
for removably securing said panel assembly in
into engagement with the inside edges of said 15 said opening, said resilient means being manually
enclosure to normally prevent the panel from
detachable from the inside of said enclosure to
moving outwardly of the enclosure, said ?exible
free the panel assembly for movement in the op
locking strip being manually removable from the
posite direction outwardly from said enclosure to
inside of said enclosure whereby the panel will
provide a free and clear escape opening.
be free to pivot about one edge of the enclosure 20
and fall outwardly from said opening.
CHRISTIAN M. VERHAGEN.
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