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Патент USA US2133025

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O'ct. 11, 1938.
J. F.' HAMM.
2,133,025
DE-ICER FOR AEROPLANES AND THE LIKE
Filed May s, 1938
2 sheetsfsneet 2
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Inventor
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A ítorneys
2,133,025
Patented Oct. 11, 1938
PATENT
OFFICE
2,133,025
_UNITED STATES
DE-ICER FOR AEROPLANES AND THE
,
LIKE
Julian F. Hamll, Temple, Tex.'
Application May 3, 1938, Serial No. 205,821
s claims. (Cl. 244-134)
This invention relates to devices for preventing
portion as at I8 to a portion of the frame I9 of
accumulation of ice upon aeroplanes or the like,
and especially to prevent the accumulation of
ice on the leading edges of the'aeroplane wings
5 as well as upon the tail group of the aeroplane
the aeroplane, the cables I4 and I5 being re
spectively connected to the lever at points above-
which includes the stabilizers and the vertical
and below the pivot I8 in a manner as will be
apparent from an inspection of Figure 5 of the «'
drawings.
'I'hrough the manipulation of the lever I1 in a
back and forth movement, the tape I3 likewise
will be caused to lbe moved backwardly and for
wardly longitudinally of the leading edge of the
wing, which in turn will cause alternate stretch
ing and ’contraction of the sheet 5 to the end
member may be agitated in a manner to positive- , that, thus being agitated, the sheet will tend
ly prevent the accumulation of ice as it‘tends to to keep the ice broken as fast as it tends to form
on the wings.`
_
__15 form on the wing.
It will be apparent that in lieu of the lever I1
The invention, with its objects and advan
tages will be best understood from a study of any suitable agitating means may be provided,
the following description taken, in connection such as for instance, an electric motor.
with theaccompanying drawings, wherein
Likewise, as indicated in Figure 1 of the draw
20
Figure 1 is a plan view of an aeroplane wing ings, the outer surface of the rubber plate 5 is
transversely corrugated as at 20, the corruga
having the invention applied thereto.
Figure 2 is an enlarged sectional view taken tions, when the plate is applied to the wings of
the aeroplane, extending vertically. or at right
' substantially on the line 2-2 of Figure l.
,
Figure 3 is a fragmentary plan view of a metal angles to the direction of movement of the agi
tape forming part of the invention.
tator tape I3.
Figure 4 is a detail of the agitator strip, and
It will also be apparent that the .invention is
Figure 5 is a detail showing the means for equally well adapted for use upon the leading
rudders and ñns.
-
In accordance with the present invention, a
member is provided which may be readily and
10 easily attached to an aeroplane wing for dis
position over the leading edge of the wing and
further, whereby means are provided that such
agitating the de-icer.
`
In accordance with the present invention the
30 de-icer, in the preferred embodiment thereof,
comprises an elongated sheet of rubber 5 or analo
gous elastic material which is of a length and
width as to fit over the leading edge 5 of the
aeroplane wing 1 as best shown in Figures 1
35 and 2.
,
At its longitudinal edges the sheet 5 has em
il
edges of a tail group, such as stabilizers and ver
tical ñns or rudders.
It is believed the details of construction and - ‘
manner of operation of the device will be read
ily understood from the foregoing without fur
ther detailed explanation.
Having
described the
invention. , what
is
claimed is-
l
l. In an aeroplane, a wing having a leadingr
bedded therein expanded metal reinforcing and vedge, a strip of elastic sheet material snugly
attaching plates 8 that have relatively wide sub- enveloping said leading edge, and means em
stantially solid marginal edge portions l aper
bedded In the sheet for moving the same longi
40 tured as at I0 so that through the medium- of
screws or the like Il said exposed edges of the
plate are secured to the top and bottom» surfaces
of the wing.
Intermediate its longitudinal edge portion the
plate 5 has a longitudinally extending portion
I2 in which is embedded a perforated metallic
' tape I3 which extends substantially throughout
` the length of the plate 5 and to the end of the
tape adjacent the butt of the wing is secured one
end of a cable or rod Il and to the end of the
tape adjacent the tip of the wing is secured a
cable I5 trained over a pulley I6, >both of said
cables being connected to a manipulating device,
which in the present instance is shown as com
prising a lever Il pivoted at .an intermediateI
tudinally of the wing for causing the sheet to l
alternately stretch and contract, to’ break loose
ice formation.
2. In an aeroplane, a wing structure tapering
rearwardly from a leading edge, a fixed elastic
covering f_or said wing structure mounted on the -,
outside of said wing structure and enclosing the
leading edge thereof, said sheet having a metal
tape longitudinally embedded therein interme
diate the longitudinal edges of the sheet, and said
tape having an end adapted to extend into the 50
fuselage of an aeroplane to be alternately pulled
and released for alternately stretching and con
tracting said' elastic sheet for breaking loose
ice tending to form on said sheet.
3. In an aeroplane; a wing having a leading i
2
2,133,025
edge, a lever pivotally mounted on the aeroplane,
an elastic sheet snugly enveloping said leading
edge and secured to the wing at the top and
bottom of the latter, and a flexible metallic tape
secured at one end' to said sheet at aboutv the
longitudinal median of the latter, and at a, rela
tively opposite end to said lever for causing the
' sheet to stretch and contract in a direction lon
tape for stretching and contracting the sheet in
a direction longitudinally> of the wing to loosen
ice crustations from the sheet.
5. A covering for the leading edge of an aero
plane wing, said covering consisting of a single
sheet of rubber, expanded metal plates embedded
in the rubber of the sheet adjacent opposite lon
gitudinal edges of said sheet, said metal plates‘ '
gitudinally of rthe wing to loosen ice crustations
10 from the sheet.
having exposed end edges for attachment directly
4. A covering for the leading edge of an aero
plane wing, said covering consisting of a single
longitudinally extending thickened portion at the
sheet of rubber, expanded metal plates embedded
in the rubber of the sheet adjacent opposite lon
15' gitudinal edges of said sheet, andv said metal
plates having exposed end edges for attachment
directly to an aeroplane wing, a. ñexible ,metallic
tape embedded longitudinally in thel sheet and
having an end extending from one end of the
20 sheet and means connected to said end of the
to an aeroplane wing, said sheet also having a 10
longitudinal medial thereof, and a metallic tape
having an end portion embedded within the’`
thickened longitudinal median part of said sheet
and having its opposite end extending from one 15
end of the sheet and means connected to said
end of the tape for stretching and contracting
the sheet in a direction longitudinally of the
wing to loosen ice crustations from the sheet.
JULIAN F. HAMIL.
20
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