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Патент USA US2411485

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Nov. 19, 1946.
2,41 1,485
, J. H. WEBSTER
CLAMPING MEANS FOR WINDSHIELD DE-ICER PANELS
Filed Aug. 21, 1944
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BY
Patented Nov. 19, 1946
UNITED ySTATES PATENT OFFICE
2,411,485
‘ CLAMPING MEANS FOR WINDSHIELD
DEICER PANELS
J ohn Harold Webster, Rocky Hill, Conn., assigner
to The Stanley Works, New Britain, Conn., a
corporation of Connecticut
Application August 21, 1944, Serial No. 550,475
9 Claims.
(Cl. 292-241) I
1
receiving a latch casing I'I. It will be understood
that the transparent panes I I, I5 may be made of
airplane windshield, and more particularly "to,
glass or any suitable molded plastic material.
improved double-acting clamping means for hold
rí‘he' casing El is provided with a pair of offset
ing said panel tightly against said windshield in
order to prevent air leakage from said panel, and Ch end feet I8, I9 adapted to underlie the pane I5,
as clearly shown in Fig. 2. The latch casing I'I
also to prevent vibration and rattling.
has on one side a stop lug 20, and on its other
One object of the present invention is to pro
side a flange 2l to limit the swinging of the latch
vide a de-icer panel clamping means of the above
blade 33, to be described later.
nature including a strike and a latch member
The casing I1 has a central bearing hole 22 in
which will permit the panel to be readily attached
the upper part thereof for tightly iitting about a
to and detached from the windshield.
reduced end 24- of a horizontal sleeve member 23,
A further object of the invention is to provide a
said latch casing also having a rear cover plate
device of the above nature which will be simple
25 which has a bearing hole 26 fitted tightly
in construction, inexpensive to manufacture, easy
about the reduced section 24 of the sleeve 23.
to install and manipulate, compact, ornamental
Provision is also made of a horizontal latch
in appearance, and very eflicient and durable `in
stud 21 having a reduced cylindrical bearing sec
tion 23 which is shaped to ñt within the reduced
With these and other objects in View, there
end 24 of the sleeve 23, said stud 21 also having
has been illustrated on >the accompanying draw->
a still further reduced squared forward end 29
» ing one form in which the invention may con 20
for receiving the latch blade 33 which is adapted
veniently be embodied in practice.
to swing in a vertical plane.
In the drawing,
The rear end of the latch stud 21 has a narrow
Fig. l represents a rear view of the improved
slot 30 which is adapted to fit tightly about a flat
clamping means as it appears when in assembled
position for holding a de-icer panel upon a Wind 25 handle 3I which is secured in said slot by means
of a pin 32. The blade 33 has a square hole 34
shield frame.
.
ñtting over the reduced squared end 29 of the
Fig. 2 is a longitudinal sectional view of the
latch stud, .said blade having a pair of parallel
same,` taken along the line 2-2 of Fig. l, looking
beveled side edges 35, 35 and a curved end edge
in the direction of the arrows, and showing the
30 3l, the latter of which is adapted to engage a
interior construction of the latch member.
U-shaped leaf spring 44 secured to a strike plate
Fig. 3` is a transverse sectional view of "the
463,
as hereinafter described.
same, taken along the line 3-3 of Fig. l, and
The reduced end 24 of the sleeve 23 rests upon
showing the appearance of the latch and strike
a washer 38 preferably formed of fiber, which is
This invention relates to a de-icer panel for an
use.
'
member in locked position.
.
`
Fig. 4 is a detail sectional view of the `same
taken through the latch blade along the line
4-4 of Fig. 1.
Y
`
.
I
Referring now to the drawing in which like
reference numerals denote corresponding. parts
throughout the several views, the numeral Ii!
indicates a rectangular windshield frame having
a transparent pane II which is mounted in an
upper horizontal rail I2, a lower horizontal rail,
and side rails, not shown.
'
In ‘order to prevent the collection and accumu#
lation of sleet, ice, or snow on the‘front ‘of the
windshield which might obstruct the vision of
the airplane pilot, provision is made of a rec
tangular de'-icer panel having an upper hori
zontal rail I3, which for- convenience in assem
bly, has an open semi-circular recess I4 for em
bracing a latch stud 2l of the clamping means
to be hereinafter described.
'The de-icer panel is provided with a transparent
pane I5, which has a rectangular notch IB for
adapted to serve as an abutment for the latch
blade 33.
Strike member
The strike member, which cooperates with the
latch, comprises the strike plate 4D which is
preferably made rectangular in shape, and has a
pair of slots 4I, 42 in its upper edge which serve
to receive screw bolts 42a, 42h on which nuts 42o,
42d are screwed forV detachably clamping the
strike member to the upper rail I2 of the Wind
shield fram’el Ill in such a manner as to permit
vertical adjustment of said strike` pla-te 49 with
respect to said frame Iii.
The strike piate 4D is provided with a short
upper
rearwardly
extending
central , narrow
iian e 43 to which is secured as by rivets 46, 4l,
the vibration-preventing U-shaped leaf spring
i4, previously mentioned. The spring 44 has a
flat short upper end 45, and an elongated arched
'-1oWer'end48 shaped to fit the curved end edge
2,411,485
4
3l of the latch blade 33. The extremity 43 of the
lower end 48 of the leaf spring dit is upturned to
cam, said panel carrying an initially horizontal
pivoted latch blade, and means to swing said
latch blade to vertical position for causing said
serve as a guide to cause the latch blade 33 to
move into proper engagement with the arched
blade to simultaneously engage the lower` leg of
said spring and said wedge cam.
2. In a device for clamping the edge of a de
lower end @f3 of said spring 4d.
The strike plate 4d is provided on its lower
side with a wide horizontal flange 521 extending
the entire length or“ said plate ¿59, said flange 52
having struck out therefrom anV inclined resilient
.wedge cam 56, leaving a slot 5i between said
wedge cam 5l) and the base of said strike plate
¿iii for receiving the latch blade 33, as most clear
ly shown in Fig. 3.
icerpanel to a windshield frame, saidlwindshield
and said panel both having transparent panes,
a strike plate mounted on the edge of said frame
.and having an upper compression spring and a
lower. flange provided with ‘a resilient wedge cam
' slot, a latch member' for cooperating with said
In order to prevent the escape of hot air, pro'- . .
strike plate comprising a casing secured to the
edge of said panel, .a sleeve fitted into said cas
vision is made of a felt strip 53 located between' 15
ing, av central stud fitted into said sleeve, said
the upper rail i3 of the panel and the windshield
stud having a handle at one end located behind
pane il,
-thepanel and having a clamping blade on its
While only one clamping means is illustrated
other` end, said blade being adapted to be swung
on the drawing, it will be understood that any
to vertical position into simultaneous engage
number of strikes and associated latches may be
located on either or both of the top and bottom 20 ment with said compression spring and said
wedge cam to prevent rattling and leakage re
rails of the windshield frame and de-icer panel
spectively.
.
respectively.
.
The present invention is of especial impor
3. The invention deñned in claim 2, in which
provision is made of a coiled spring housed in
tance where a de-icer panel is used which has an
air inlet slot at the bottom, in which case the 25 said sleeve to press said blade against the edge
of said wedge cam slot.
'
U-shaped leaf spring di not only serves to pre
4. The invention deñned in claim 2,- in which
vent vibration but also forces the lower edge of
said casing has means to limit the swinging of
the panel down against the lower end of the
said blade in both directions.
Y
windshield frame adjacent the air intake mani~
30
5. In a double-action device for clamping the
fold located on the cowl of the airplane.
edge of a panel to a frame, a U-shaped strike
Operation
plate mounted on'the edge of said frame, said
In operation, assuming the strike plate has
plate having rearwardly-extending upper and
lower ñanges, a U-shaped leaf spring having one
first been assembled on the windshield frame IU 35 leg thereof secured to said upper flange, said
in the proper adjusted position, when it is de
lower flange having a horizontal slot provided
siredto lock the .panel to said frame, said panel
with a resilient wedge cam, said panel carrying '
will ñrst be pressed against the windshield pane
an initially horizontal pivoted latch blade, and
il in proper position between the upper and low
means to swing said latch blade to vertical posi
er rails of the windshield frame Iii. The handle
tion for Vcausing said blade to simultaneously en
3| of each latch stud‘ 2l' will then be turned from
gage the lowerA leg ofr said spring and said wedge
vertical to horizontal position, as shown in Figs.
cam.
.
l `and 3, causing the latch blade 33 to move to
6.
In
a
double-action
device
for clamping the
the vertical position, as shown, into engagement
edge of a panel to a frame, a U-'shaped strike
with the lower arched section ¿i8 of the U-shaped j " plate mounted horizontally on the edge of said
spring lili. This will cause each spring ¿i4 to exert
frame, said plate having rearwardly-extending
a compressive force against'the panel to prevent
upper and lower ñanges, a U-shaped leaf spring
rattling and vibration. At the same time each
having one leg thereof secured to said-upper
latch blade k33 will be pressed outwardly by means
ñange,
said lower ñange having a horizontal slot
of the coiled spring '38 against the 'resilient
provided with aresilient wedge cam, said panel
wedge cani 5t on the strike plate iii?, this action
carrying an initially horizontal pivoted `latch
causing the panel to be pressed tightly against
blade,
means to swing said latch> blade to vertical
the windshield for preventing vleakage of air
around the edge of the felt strip .53. `
'While’there has been disclosed in’this speciñf
cation one form in which the invention may >be
embodied, it will he understood that this form is
shown for the purpose of illustration only, and
that the invention is not to be limited to the spe-Y
position for causing said blade to simultaneously
engage the lower leg ci’ said spring and said
wedge cam, and means for detachably and ad
¿iustably securing said strike plate to the edge
of the windshield frame.
' '
V'7. In a double-action device for clamping the
edge
a panel to a frame, a U-shaped strike
ciñc disclosure, lout may be modified and embod 60 plate of
mounted on the edge of »said frame, said
ied in various other forms without departing
plate having rearwardly-extending upper and
from its spirit. In short the invention includes
lower flanges, a U-shaped leaf spring having one
all the «modifications and embodiments coming
leg `thereof secured to said `upper flange, >said
withinthe scope of the following claims.
lower flange having a slotV provided with a resil
>I-Iaving thus fully described the invention, f ient‘wedge
cam, said panel carrying a pivoted
what is claimed as new, and for which it is de
latch'blade, and means to swing said latch blade
sired to secure Letters Patent is:
to locking position for causing said blade to
l.. In a doublaaction device for clamping the
simultaneously engage the lower leg of said
edge'of a de-icer panel to a windshield frame, a
lU-shaped strike plate mounted horizontally on 70 spring and said wedge cam, said strike plate be
ing provided with aplurality of open slots in the
the’edgc of said frame, said plate'having rear
edge of its base to receive screwrbolts having
wardly extending upper and lower flanges, aU
nuts threaded thereon for attachingsaid strike
shaped lea-f spring having one leg thereof secured
plate to said frame and permitgsaidstrike plate
to said upper ñange, said lower ñange having a
horizontal slot provided with a resilient wedge 75 to be >removed therefrom by merely >loosening '
saidnuts without removing said bolts,ysaid strike
2,411,485
6
plate being removable from said frame by mov#
ing it inwardly from the edge of said frame.
8. In a double-action device for clamping the
edge of a panel to a frame, a strike plate for
mounting on lthe edge of said frame and having
a compression spring located adjacent the outer
edge oßsaid strike plate, the inner edge of said
strike plate being provided with a resilient Wedge
cam slot, a latch member for cooperating with
said strike plate comprising a casing having a
pair of opposed offset feet for engagement With
said panel, a sleeve ñtted into said casing, and
a central stud ñtted into said sleeve, said stud
having a handle on one end projecting therefrom
and spaced from said panel, said stud also hav
ing a clamping blade on its opposite end for
simultaneously engaging said compression spring
and Wedge cam to prevent rattling and leakage
respectively.
9. In a double-action device for clamping the
edge of a panel to a frame, a strike plate for
mounting on the edge of said frame and having
a compression spring located adjacent the outer
edge of said strike plate, the inner edge of said
strike plate being provided with a resilient Wedge
cam slot, a latch member for cooperating with
said strike plate comprising a casing for engage
ment With said strike plate, a sleeve fitted into
said easing, and a central stud fitted into said
sleeve, said stud having a handle on one end pro
jecting therefrom and spaced from said panel,
said stud also having a clamping blade on lts op
posite end for simultaneously engaging said com
pression spring and Wedge cam to prevent rat
tling and leakage, respectively, said handle being
located at right angles to the position of said
latch blade.
-JOHN HAROLD WEBSTER.
l
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