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Патент USA US2106251

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Jan. 25, 1938.
‘A F. G. LUDWIG _'
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WINDOW STRUCTURE
Filed Feb.' 25, 1937 Ü ~
2,106,251
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‘2,106,251
'Patented .1m25.193s '
1UNITED- STATES PATENT oFFlc-'E
2,106,251 '
vwnmow STRUGrUBE
G. Ludwig, rmkpon, nl.V _
a Application February z3, 19er, seriaim.- 126,966
5 Claims.
. A This invention relates to window structures
and more especially to such structures as_apply
to windows of 4motor vehicles.
A
AAs is >well known, by> the present type of win
5 dow construction for motor 'vehicles frosting oc
curs on the inner` side of thevglass during cold
_ weather, and it is verydifilcult to prevent this
(c1.
zii-56.5)
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paneA I5, separated by an .evacuated space I6.
The inner pane I I comprises a sheet of glass I1
having a- layer of celluloid I8 suitably adhered
thereto and preferably on the side presented t0
the evacuated space I6. The celluloid I8 is 5
adapted to maintain the'glass I1 shatter-resist
ing or shatterproof in case of injury or accidental
formation because of the unavoidable humidity fracturing of the glass. Simi1ar1y,~the outer pane
in. the passenger compartment which condensès `I5 comprises a glass sheet I9, the inner surface
10 on the inner side of the glass when the outer side "of‘ which has similarly secured to yit a celluloid 10
of the'glass is cold.
sheetuZli. Theedges of the panes ‘I4 and I5 are
It is to overcome this that my present invention separated by a suitable spacing strip 2i, and if
has been conceived and developed and consists es `desired the glass may be fused together forming
sentially in the formation of the window panes
15 into a unit having an inner pane and an outer
paneseparated by an levacuated space so that
the fused edge 22.
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f
_ i
It may be found desirable in practice to provide 15
panes I4 and I5 each with two layers of glass, 4„I1
the transfer of heat- or temperature from the in
and I'Ia and I 9 and |9a, and provide the celluloid
vwith both its surfaces 'cemented ~to the glass.' By
of the inner pane will be prevented.
_- ~
this arrangement greater strength is provided
20- It is therefore Aan object of my invention to and there is reduced tendency of the celluloid to 20
provide a simple practical and inexpensive article become waved or wrinkled or spotted due to ex- - >
of the character described.
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treme changes of temperature. The double> pane
Another object is to provide a window glass . construction of Fig. 7 may be provided with the
construction adapted to prevent frosting of' win
fused edge of Fig. 2 as illustrated in Figs. 4 and
25 dows in cold weather.
- _5, wherein windows V23 are suitably set in 25
Another object is to provide a window glass Aframes 24.
'
having improved heat and cold resisting charac
.From the foregoing description it will be ap
teristics.
parent that the evacuated space I6 provided be
Other objects and advantages will appear and tweenthe panes Il and I5 will permit the outer
ner to the' outer side will’not occur and frosti
Y
30 be brought >out more fully in the following speci- - pane I5 to be kept at a temperature very mate-` $0
- fication, reference being had to the accompanying rially lower than that of the inner pane I4, such
drawing, wherein:
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Fig. 1 is a partial view of a motor vehicle body
having windows constructed according to my in
35 vention;
.
that the moisture of the air in the passenger
compartment of the motor vehicle will not con
dense upon the inner pane, whichunder these
. circumstances will not ordinarily become cold' 35'
_
Fig. 2 is an enlarged fragmentary section taken
enough to condense this moisture into frost for
along the line 2-2 of Fig.- 1;
'
mation.
¿
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Fig. 3 is a perspective view of a portion of the ì
While I have illustrated and described the pre
pane of Figs. 1 and 2;
ferred form of construction for carrying my in- -
40
Fig. 4 is a fragmentary view of a building- wall
showing the windows constructed according to
my invention;
Fig. 5 is an enlarged section taken along the
line 5-5 of Fig. 4;
45.
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Fig. 6 is a cross-section of a Window construc
tion employing a modiñcation of my invention;
and
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Fig. 'I is a ‘similar view illustrating a further
modification.
vention into effect, this is capable of variation 40'
and modification- without departing from .the
spirit ofthe invention. I, therefore, do not wish
to be limited to the precise’details of construc
on set forth, but desire to avail myself -of such
variations and modifications as come within the 45
l scope of the appended claims.
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Having thus described my> invention, what I `
claim as new and desire'to secure by LettersiPat
ent is:
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5o
Referring more particularly _to the drawing.
1. A window structure as described, comprising 50
and especially Figs. 1-3, I show a fragmentary spaced panes fused together at the edges, said
portion of a motor vehicle body I0 having a front space being evacuated, and said panes having in
windshield frame .Il provided with a windshield ner surfaces thereof provided with shatterproof
glass I2 and having a'side> window I3. 'I'he win
55 dowv I2 comprises an inner pane I4,_and an outer
.2. A window structure as> described, comprising. u
material.
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2
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2,106,251
thereof, said space being evacuated, and said
spaced panes fused together at the edges, said
space being evacuated, and said panes having
' shatterproof material secured on the inner sur
faces thereof.
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3. _A window structure as described, comprising
spaced panes fused together at the edge portions
thereof, said space being evacuated, and said
panes each comprising a pair of panes having a
layer of shatterproof material therebetween.
4. A window structure as described, comprising
10
spaced panes fused together at the edge portions
panes each ‘comprising a pair of panes secured y
to the opposite sides of a sheet of shatterproof
material.
’
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5. A window structure as described, comprising
spaced- panes fused together at the edge portions
thereof, said space being evacuated, and said
panes each comprising a unit having a layer of
shatterproof material embedded in the central
portion thereof.
,
10
.
FRANK G. LUDWIG.
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