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Патент USA US2111557

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‘March 22, 1938.
N A, DRAM
2,111,557
AIRPLANE WING STRUCTURE
Filed April 3, 1936
INVENTOR
BYN/CHOLAS A. DRA/M
QM
ATTORNEY
'
Patented Mar. 22, 1938
2,111,557 .
UNITED STATES PATENT OFFICE
2,111,557
AIRPLANE WING STRUCTURE
Nicholas A. Draim, United States Navy
Application April 3, 1936, Serial No. 72,496
1 Claim. (Cl. 244-432)
(Granted under the act of March 3, 1883, as
amended April 30, 1928; 370 0. G. ‘757)
porting surface of the rib and are enclosed by a
This invention relates to an airplane wing strip
of tape l8 which bridges these members and
structure and it has a particular relation to means is secured to the fabric I8 along its edges by a
for securing the fabric to the frame or rib ele
suitable adhesive so as to present a substantially
ments thereof.
?ush unbroken surface to the airflow of the wing.
The
principal
object
of
the
invention
is
the
0
In Fig. 2 a slightly modi?ed rib constructionds
provision of means for attaching the fabric to the
ribs of an airplane wing so as to present a Sube illustrated wherein a depression I9 is formed di
rectly in the outer edge of a tubular rib 20, and
stantially flush surface to the air?ow.
in which the fabric is secured in a manner similar
Another object of the invention is the pro
10
vision of means whereby the fabric may quickly to that previously described. It will be noted,
however,
that
in
both
of
these
constructions
the
and easily be secured to and removed from the
frame structure of the wing without in any way parts which secure the fabric to the rib are dis
sacri?cing the supporting characteristics of the posed entirely within the plane of the air?ow and
present little or no resistance thereto.
wing, and which will effectively resist any tend
A construction such as that described enables
“ ency to rip or tear at this point due to the friction
the fabric to be quickly and easily attached to or
of the air?ow.
With these and other objects in view, as well removed from the supporting structure with the
as other advantages that may be incident to the simplest of tools and from the outside surface of
use of the improvements, the invention consists the wing. Moreover, the fabric is held in posi
in the parts and combinations thereof hereinafter tion in a continuous line rather than at intervals,
which materially reduces the tendency for the
set forth and claimed, and with the understand
fabric
to rip or tear at its line of attachment,
ing that the several necessary elements consti
tuting the same may be varied in proportion and which tendency has heretofore been principally
arrangement without departing from the nature due to the relative looseness of the fabric between
25
the attaching rivets.
and scope of the invention, as de?ned in the ap
Other modi?cations and changes in the pro
pended claim.
.
portions and arrangement of the parts may be
In order to make the invention more clearly un
derstood, there are shown in the accompanying made by those skilled in the art without depart
drawing, means for carrying the invention into ing from the nature and scope of the invention as
practical use, without limiting the improvements
in their useful application to the particular con
struction, which, for the purpose of explanation,
have been made the subject of illustration.
In the accompanying drawing:
,
de?ned in the appended claim.
34)
' ‘i
The invention described herein may be manufactured and used by or for the Government of
the United States of America for governmental
purposes without the payment of any royalties
Fig. 1 is an enlarged transverse sectional view
through an airplane wing rib and illustrating the
thereon or therefor.
improved means for securing thefabric thereto;
and
’ Airplane wing structure comprising a rib hav
I claim: '
‘
,
ing‘ an inner portion of substantially U-shape in
cross-section formed with outwardly extending
spaced ?anges on the legs thereof and an outer
construction.
Referring to the drawing, and particularly to portion having a longitudinally extending depres
sion disposed within the space between the legs of
Fig. 1 thereof, an airplane wing structure embody
ing the invention is shown as comprising a hollow the U-shaped portion and having oppositely ex
rib member ID of modi?ed U-shape in cross sec
tending fabric supporting ?anges overlying and
tion and formed at its outer edge with outwardly secured to the ?anges of said U- haped portion;
extending ?anges I l. Secured to these ?anges by fabric supported by said rib and ?exed into the
welding, riveting, or in any preferred manner, is depression of the outer portion thereof; a channel
a member l2 having a central depression l3 which 'member disposed within' the depression of said
Fig. 2 is a similar view of another form of rib
closes and seats within the space along the outer " outer portion for maintaining said fabric from 50
displacement from said rib; headed rivets for se
side of the rib l0.
Extending over» the outer surface of the rib l0 curing said channel member in said depression,
and member I2 is the main supporting fabric M said channel member and the heads of said rivets
of the wing which is ?exed inwardly into the de
pression vl3, as indicated at l5, and secured there
in by a channel member or retaining strip l6.
being disposed wholly within the outer fabric sup
porting surfaces of the ?anges of the outer por
Thismember securely clamps the fabric in posi
outer surface of said fabric and extending over
said channel member and rivets and forming a
t-ion and is secured within the depression l3 by
fastening means in the form of tubular rivets H.
The retaining strip l5 and fastening means l6
co
are disposed wholly within the outer fabric sup
tion of said rib; and a strip of tape secured to the '
substantially flush outer surface for said wing.
NICHOLAS ‘A. DRAIM.
60
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