Window sash assembly

Disclosed is a window sash assembly for use on an exterior surface at a window opening. The assembly comprises a rectangular framework formed by an upper horizontal frame member, a lower horizontal frame member and a pair of vertical frame members. The framework includes a window covering portion facing the window opening and at least one window panel housing portion on the exterior wall surface alongside the window opening. The sash assembly includes at least a pairof window panels which are retractable into the window panel housing portion to fully open the window opening.

This invention relates to a window sash assembly and more particularly, to 
a window sash assembly suited for mounting on an exterior wall surface at 
a window opening in such a manner that the window opening may be opened to 
its full width without being obstructed by any glazed window panel, screen 
or shutter. 
A typical window sash assembly of this sort known in the art does not 
permit the window opening to be fully opened. Even when the window is 
opened to its full possible extent, at least one window panel remains in 
front of the window opening and undesirably keeps the window opening 
closed in part. In order to fully open the window opening, it is essential 
to dismount all of the window panels, shutters or the like. It is 
necessary to replace the window panels or the like in order to close the 
window opening. This is a cumbersome and hard work because the window 
panels and the like are heavy in weight. Moreover, it is necessary to move 
the window panels or the like from one side to another in order to change 
the open area of the window opening. 
It is, therefore, a general object of this invention to eliminate the 
aforementioned drawbacks of the window sash assembly known in the art for 
use on an exterior wall surface at a window opening. 
It is an object of this invention to provide a novel and improved window 
sash assembly for use on an exterior wall surface at a window opening, 
which is designed and installed in such a manner as to permit the window 
opening to be opened to its full width. 
It is another object of this invention to provide a novel and improved 
window sash assembly which is easy to manufacture and install at a window 
opening. 
It is a further object of this invention to provide a novel and improved 
window sash assembly which is easy to operate to open the window opening 
to its full width. 
According to this invention, there is provided a window sash assembly for 
use on an exterior wall surface at a window opening, comprising a 
rectangular framework formed by an upper horizontal frame member, a lower 
horizontal frame member and a pair of vertical frame members, the 
framework including a window panel housing portion facing the wall surface 
on at least one side of the window opening, the housing portion being 
capable of receiving therein at least one window panel when the window 
opening is fully opened.

Referring to FIGS. 1 and 2 illustrating a first embodiment of this 
invention, there is shown a window sash assembly S.sub.1 mounted on an 
exterior wall surface at a window opening W. The window sash assembly 
S.sub.1 is of such type that the window opening can be fully opened when a 
or each pair of window panels or screens are moved away from each other, 
while it is closed when they are moved toward each other. FIG. 1 shows a 
vertical cross section of the sash assembly S.sub.1 mounted at the window 
opening W. In FIG. 1, the outdoor side of the window is shown at left and 
the indoor side thereof at right. FIG. 2 shows a horizontal cross section 
of the sash assembly S.sub.1, of which the outdoor side is shown at top, 
while its indoor side appears at bottom. 
The window sash assembly S.sub.1 comprises a window covering portion 1 
positioned on the outdoor side of the window opening W, and a pair of 
window panel housing portions 5 connected to the opposite side edges of 
the window covering portion 1. Each window panel housing portion 5 extends 
along a wall 3 between a post 2 at the perimeter of the window opening W 
and another post 4 remote from the window opening W as shown in FIG. 2. In 
FIG. 1, a lintel or head jamb is shown at 6 and a windowsill at 7. 
The sash assembly S.sub.1 includes an upper frame 8 secured to the outer 
surface of the lintel 6 and extending outwardly therefrom. The upper frame 
8 further extends along the length of the lintel 6 to define a roof for 
the window covering portion 1 and the window panel housing portions 5. The 
upper frame 8 includes a vertically extending base portion 9 placed 
against the outer surface of the lintel 6. The base portion 9 has an upper 
edge 10 bent outwardly and then inwardly, so that the upper edge 10 
contacts the lintel 6 at an angle thereto as clearly shown in FIG. 1. The 
upper edge 10 is secured to the lintel 6 by a nail 11 and the base portion 
9 further includes a lower edge secured to the lintel 6 by a nail 12. 
The upper frame 8 has a head member 13 having an inner end joined to the 
base portion 9. The head member 13 is slightly inclined outwardly and 
downwardly and has an outer end bent downwardly and joining a slide web 
17. A reinforcing partition 14 depends downwardly from the underside of 
the head member 13 and the slide web 17 has an inner edge joined to the 
partition 14. 
The upper frame 8 further includes a bottom member 15 of which the slide 
web 17 forms a part, and which includes a base web 16 located at a lower 
level than the slide web 17 and connected to the slide web 17 by a 
vertical connecting member 18. The base web 16 has an inner edge joined to 
the base portion 9 in the vicinity of the latter's lower edge, and is 
slightly inclined outwardly and downwardly until its outer edge is 
connected to the bottom edge of the connecting member 18. The slide web 17 
extends horizontally and outwardly beyond the outer edge of the head 
member 13 and has a downwardly bent outer edge 19. The upper frame 8 thus 
includes a hollow space 20 of generally square cross section defined by 
the base portion 9, the partition 14, the base web 16 and the connecting 
member 18, and another hollow space 21 of generally rectangular cross 
section defined by the head member 13, the partition 14 and the slide web 
17. 
Three partitions 22, 23 and 24 having an equal width depend down from the 
underside of the slide web 17. The first partition 22 and the connecting 
member 18 define therebetween a first sliding groove 25 for glazed window 
panels. The first and second partitions 22 and 23 define therebetween a 
second sliding groove 26 for screen windows, and the outer edge 19 of the 
slide web 17 and the third partition 24 define therebetween a third 
sliding groove 27 for shutters or storm windows. 
A number of longitudinally extending raised grooves 28 are provided on the 
upper surface of the bottom member 15. 
The sash assembly S.sub.1 further comprises a lower frame 29 secured to the 
outer surface of the windowsill 7 and extending outwardly from the 
windowsill 7. The lower frame 29 extends along the outer surface of the 
windowsill 7 and forms a floor for the window covering portion 1 and the 
window panel housing portions 5. The lower frame 29 includes a base 
portion 30 contacting the outer surface of the windowsill 7. The base 
portion 30 includes an inwardly bent upper edge 31 extending between the 
posts 2 and contacting the upper surface of the windowsill 7. The upper 
edge 31 is secured to the windowsill 7 by screws 33. The base portion 30 
further includes a pair of upper edge extensions 32 which are also 
inwardly bent and extend horizontally. Each upper edge extension 32 
extends along the wall 3 between the posts 2 and 4 and is secured to the 
windowsill 7 by screws 34. The base portion 30 has a lower edge secured to 
the outer surface of the windowsill 7 by nails 35. 
The lower frame 29 comprises a bottom member 36 having an inner edge joined 
to the base portion 30. The bottom member 36 extends horizontally and 
outwardly from the base portion 30 and terminates in an outer edge lying 
in the vertical plane of the outer edge 19 of the upper frame 8 in which 
the bottom member 36 is bent both upwardly and downwardly to form its 
outer edge 37. The lower frame 29 further comprises a head member 38 of 
outwardly and downwardly stepped construction which includes an inner 
portion 39 having an inner edge joined to the base portion 30. The outer 
edge of the inner portion 39 is downwardly bent to define a first slide 
web 40 having an inner edge connected to the inner portion 39 at a level 
below the inner portion 39. The first slide web 40 has an outer edge 
downwardly bent to define a second slide web 41 which in turn has an outer 
edge joined to the bottom member 36. 
The first slide web 40 is located below the first sliding groove 25 and 
includes an upright rail 42 extending longitudinally of the lower frame 
29. Likewise, the second slide web 41 is positioned below the second 
sliding groove 26 and includes an upright rail 43 for screen windows 
extending in parallel to the first rail 42. The bottom member 36 defines a 
lower sliding groove 44 between the outer edge 37 and the second slide web 
41 which receives therein shutters or storm windows in cooperation with 
the upper sliding groove 27. The lower frame 29 includes a reinforcing 
partition 45 which depends in a vertical plane from the junction between 
the inner portion 39 and the first slide web 40 and which has a lower edge 
joined to the bottom member 36. The partition 45 thus defines on its 
indoor side a hollow space 46 of generally rectangular cross section and 
on its outdoor side, it defines another hollow space 47 which is of the 
inverted L shape in cross section. The lower frame 29 further includes a 
pair of longitudinally extending grooves 48 opening downwardly from the 
underside of the head member 38 and adapted to engage screws as will 
hereinafter be described. The bottom member 36 is also provided on its 
underside with a pair of like grooves 48 of like purpose. 
The sash assembly S.sub.1 further includes a pair of opposite side frame 
members 49 each defining the outer extremity for one of the window panel 
housing portions 5. Each side frame member 49 includes an outwardly bent 
inner end flange 50 extending along the outer surface of the post 4 and 
secured thereto by nails 51. The vertical side frame members 49 have a 
width sufficient to embrace the upper and lower frames 8 and 29 and are 
each formed at the outer edge with an inwardly directed flange 52. Each 
side frame member 49 has an upper end secured to the upper frame 8 by 
screws received in the grooves 28 and a lower end secured to the lower 
frame 29 by screws received in the grooves 48, whereby a rectangular outer 
peripheral framework for the sash assembly S.sub.1 is formed. 
The sash assembly S.sub.1 further comprises a pair of vertical partition 
pillars 53 of rectangular, hollow construction in cross section. Each 
partition pillar 53 is located at the boundary between the window covering 
portion 1 and one of the window panel housing portions 5. The partition 
pillar 53 extends vertically between the upper and lower frames 8 and 29 
and is secured to the outer surface of the post 2. The partition pillar 53 
has a hollow interior shape 54 of rectangular cross section and includes 
an outer wall 55 facing outdoors. The outer wall 55 is formed with an 
outwardly projecting locking flange 56 approximately in its center along 
the height thereof. The locking flange 56 is approximately T-shaped in 
cross section and receives therein a mating flange projection 78 on a 
glazed window panel 64 as will hereinafter be described in further detail. 
The partition pillar 53 includes an inner side wall 57 shown at left in 
FIG. 2 and extending outwardly beyond the outer wall 55 to define a flange 
58 of the inverted L shape in cross section. A sealing member 59 is 
provided in a groove defined between the flanges 56 and 58. The partition 
pillar 53 further includes an inner wall 60 contacting the outer surface 
of the post 2. The inner wall 60 projects in either direction beyond the 
inner side wall 57 and the outer side wall to form a pair of flanges 61 
secured to the post 2 by nails 62. The partition pillar 53 further 
includes a pair of groove projections 63 which are provided one on the 
inner surface of each side wall and receive screws to secure the partition 
pillar 53 to the upper frame 8. Another pair of like grooves 63 are 
provided to secure the partition pillar 53 to the lower frame 29 by 
screws. 
The sash assembly S.sub.1 is provided with a pair of glazed window panels 
64 each having an upper end received in the first sliding groove 25 of the 
upper frame 8 and a lower end supported on the first rail 42 on the lower 
frame 29. The glazed window panels 64 are movable toward each other to 
close the window opening W and away from each other to open it to its full 
width. Each glazed window panel 64 comprises an upper frame member 65, a 
lower frame member 66 and a pair of vertical side frame members 67 and 68 
which are all of the hollow, box-like construction and are connected to 
one another to form a rectangular framework. A pane of glass 69 is fitted 
to the inner periphery of the framework by sealing material 70. One of the 
glazed window panels 64 has a pair of webs 71 extending from its inner 
side frame member 67 toward the other glazed window panel 64. The other 
glazed window panel 64 includes a pair of grooved flanges 73 each carrying 
a sealing member 72 thereon. The webs 61 are moved into the clearance 
defined between the flanges 73 to rest against the sealing members 72 as 
shown in FIG. 2 when the panels 64 are brought into their closed 
positions. The inner side frame member 67 of each panel 64 includes an 
integrally formed decorative member 74 on its indoor side. The glazed 
window panel 64 shown at right in FIG. 2 is provided with a key member 75 
and the glazed window panel 64 shown at left is provided with a lock 76. 
The outer side frame member 68 includes an inner wall 77 formed with an 
L-shaped locking flange 78 extending inwardly and engaged with the mating 
locking flange 56 on the partition pillar 53. A sealing member 79 is 
carried on the locking flange 78 and abuts against the locking flange 56. 
The frame member 68 further includes an outer side wall 80 which extends 
inwardly beyond the inner wall 77 to form an end flange 81. A sealing 
member 82 is provided between the locking flange 78 and the end flange 81 
and has a free edge in sealing contact with the inner wall 55 of the 
partition pillar 53 as shown in FIG. 2. 
Outwardly of the glazed window panels 64, there are provided a pair of 
screen windows 83 each having an upper end received in the second sliding 
groove 26 and a lower end supported on the second rail 43. The screen 
panels 83 are slidable toward and away from each other to close and open 
the window opening W. Each of the screen windows 83 comprises a 
rectangular framework formed by an upper frame member 84, a lower frame 
member 85, a pair of vertical side frame members 86 and a horizontal 
middle frame member 87 which are all of the hollow, box-like construction. 
A pair of wire nets 88 are fitted to the framework by fastening members 
89. 
Provided outwardly of the screen windows 83 are a pair of shutters or storm 
windows 90 each having an upper end received in the third sliding groove 
27 of the upper frame 8 and a lower end supported within the lower sliding 
groove 44. Each shutter 90 comprises a framework formed by an upper frame 
member 91, a lower frame member 92, a pair of vertical side frame members 
93 and a number of horizontal middle frame members 94. A number of 
corrugated plates 95 of light metal or alloy, such as aluminum, are fitted 
to the framework by fastening members 96. The shutters 90 are operated in 
a manner similar to the glazed window panels 64 or the screen windows 83 
as hereinbefore described. 
In order to open the window opening W to its full width, one of each of the 
glazed window panels 64, the screen windows 83 and the shutters 90 is 
moved to the right as viewed in FIG. 2 into one of the window panel 
housing portions 5 and the other glazed window panel 64, screen window 83 
and shutter 90 are slid to the left into the other window panel housing 
portion 5. These three kinds of window panels may be operated either all 
together as described, or in any other manner largely variable with the 
requirements of the user to open or close the window opening W to its full 
width or in part or to any other extent as desired. Operation of the 
window sash assembly S.sub.1 as hereinabove briefly explained may be 
apparent to any person skilled in the art without any more detailed 
description. 
The shutters 90 may be replaced by a pair of glazed window panels in order 
to keep the indoor space bright, while shutting off any outdoor noise, 
even when the window opening W is completely closed. The sealing members 
59, 79 and 82 perfectly closes any clearance space between the partition 
pillars 53 and the glazed window panels 64 upon full closure of the window 
to thereby prevent any infiltration of outdoor air and maintain the 
optimum effects of indoor air conditioning, whereby the resident can enjoy 
the maximum comfort especially during the winter months. 
Moreover, as is evident from the foregoing disclosure, the window sash 
assembly S.sub.1 of this invention can be easily mounted to the exterior 
wall surface at the window opening and, therefore, need not be 
manufactured to conform to the dimensions of the perimeter of any 
particular window opening. Thus, the window sash assembly of this 
invention may be quite adavantageously fabricated as an integral unitary 
structure which includes at least a pair of window panels and which is 
ready for mounting on the exterior wall surface. Furthermore, the 
partition pillars 53 provide a strong mounting support for the window sash 
assembly S.sub.1 installed on the exterior wall surface of the window. Any 
localized load bearing on the lower frame 29, especially when all of the 
glazed window panels 64, screens 83 and shutters 90 are in their closed 
positions, is duly supported on the windowsill 7 through the base portion 
30 and its upper flange 31. The upper flange extension 32 of the lower 
frame 29 assists in providing a rigid support for any such load. 
As the upper flange 31 of the lower frame 29 and its extensions 32 are 
placed between the corresponding posts 2 and 4, the window sash assembly 
S.sub.1 can be snugly installed on the exterior wall surface and 
maintained in place for ever without being undesirably displaced relative 
to the width of the window opening W. It will be understood that if there 
is any additional post between the posts 2 and 4, the upper flange 
extension 32 of the lower frame 29 may be interrupted for the width of any 
such additional post and fitted snugly between the posts 2 and 4 and any 
such additional post. 
Each of the partition pillars 53 also serves as a stop for the 
corresponding glazed window panel 64 when the latter is moved into its 
closed position. This will be apparent from the foregoing description 
regarding the engagement of the locking flange 78 of the glazed window 
panel 64 with the mating flange 56 of the partition pillar 53. Thus, no 
overrun of either glazed window panel 64 will occur. 
FIGS. 3, 4 and 5 illustrate modification to the window sash assembly 
S.sub.1. Each vertical side frame 49 of the sash assembly S.sub.1 is 
modified to include a channel-shaped outer extension 100. A vertical frame 
member 101 is provided at the boundary between the window covering portion 
1 and each window panel housing portion 5. The vertical frame member 101 
is secured by screws or otherwise to the outer edges 19 and 37 of the 
upper and lower frames 8 and 19, respectively. Each vertical frame member 
101 has a hollow interior space 102 of rectangular cross section and 
includes a channel-shaped extension 103 facing the channel-shaped 
extension 100 of the side frame 49. A front panel 97 is fitted between the 
channel-shaped extensions 100 and 103 and secured thereto by screws or 
otherwise. 
The structure of FIGS. 3 and 4 includes a hand rail 104 of the grille-like 
construction installed in front of the lower part of the window covering 
portion 1. The hand rail 104 is secured to the vertical frame members 101 
and the outer edge 37 of the lower frame 29 by screws 105 and 106. 
The structure shown in FIG. 5 includes a grille or lattice 107 mounted in 
front of the window covering portion 1. The lattice 107 is formed by a 
plurality of elongate boards 108 and secured to the vertical frame members 
101. 
The front panel 97 installed outwardly of each window panel housing portion 
5 provides improved protection against rain and wind. 
FIGS. 6, 7 and 8 of the drawings illustrate a window sash assembly S.sub.2 
according to a second embodiment of this invention. FIG. 6 shows a 
horizontal cross section of the window sash assembly S.sub.2 mounted on an 
exterior wall surface at a window opening W defined by a lintel or head 
jamb 201, a windowsill 202 and a pair of vertical posts 203 and 204. In 
FIG. 6, the outdoor side of the window is shown at top and its indoor side 
at bottom. The window sash assembly S.sub.2 comprises an integral 
framework formed by a window covering portion 208 facing the window 
opening W, a window panel housing portion 209 provided alongside the 
window covering portion 208 and adjacent to the exterior wall surface and 
a shutter box portion 210 provided outwardly of the window panel housing 
portion 209. The window panel housing portion 209 is adapted to receive 
therein a pair of glazed window panels 205A and 205B and a pair of screen 
windows 206 installed outwardly of the glazed window panels 205A and 205B 
when these window panels and screens are moved into their open positions. 
The shutter box portion 210 is adapted to receive therein a pair of 
shutters or storm windows 207 when the shutters 207 are slid into their 
open positions. The two glazed window panesl 205A and 205B are installed 
in different vertical planes from each other. Likewise, the two screen 
windows 206 are installed in different vertical planes from each other. 
The shutters 207 are mounted in a common vertical plane. 
Referring to FIG. 7, in which the indoor side of the window is shown at 
right, the window sash assembly S.sub.2 includes an upper frame 211 
secured to the outer surface of the lintel 201 and extending outwardly to 
form a roof for the window covering portion 208 and the window panel 
housing portion 209. The upper frame 211 includes a vertical base portion 
212 contacting the outer surface of the lintel 201. The base portion 212 
has an upper edge 213 contacting the lintel 201 at an angle thereto and 
secured thereto by nails 214. The upper frame 211 includes a head member 
215 which is slightly inclined outwardly and downwardly and which has an 
inner edge joined to the base portion 212. The outer edge of the head 
member 215 is downwardly bent to define a vertically depending outer edge 
joined to a slide web 218. The upper frame 211 further includes a bottom 
member 216 formed by a horizontal base web 217, a horizontal slide web 218 
located at a higher level than the base web 217 and a vertical connecting 
web 219 connecting the base and slide webs 217 and 218. The base web 217 
has an inner edge joined to the base portion 212 adjacent to the lower 
edge 220 of the latter. The lower edge 220 of the base portion 212 is 
secured by nails 222 to a decorative head 221 attached to the underside of 
the lintel 201. The slide web 218 extends outwardly beyond the vertical 
outer edge of the head member 215 and terminates in a downwardly bent, 
vertical depending outer edge 223. 
The upper frame 211 further includes a vertical reinforcing partition 224 
depending from the underside of the head member 215 and having a bottom 
edge joined to the upper surface of the slide web 218. The upper edge of 
the reinforcing partition 224 is joined to the head member 215 
approximately halfway between the inner and outer edges of the head member 
215. The partition 224 defines within the upper frame 211 a hollow space 
225 of inverted L-shaped cross section on the indoor side thereof and 
another hollow space 226 of generally rectangular cross section. Five 
vertical partitions 227 to 231 depend from the underside of the slide web 
218 and have an equal width. The connecting web 219 and the first 
depending partition 227 define therebetween a first sliding groove 232 for 
the inner glazed window panel 205A. The first and second partitions 227 
and 228 define therebetween a second sliding groove 233 for the outer 
glazed window panel 205B. The second and third partitions 228 and 229 
define therebetween a third sliding groove 234 for the inner screen window 
206. The third and fourth partitions 229 and 230 define therebetween a 
fourth sliding groove 235 for the outer screen window 206. The fifth 
partition 231 and the outer edge 223 of the slide web 218 define 
therebetween a fifth sliding groove 236 which is an upper sliding groove 
for the shutters 207. The upper frame 211 further includes a plurality of 
longitudinally extending screw engaging grooves 237 provided on the lower 
surface of the head member 215 and on the upper surface of the bottom 
member 216. The grooves 237 are provided to receive screws for mounting a 
pair of side frames 286 and 305 for the sash assembly S.sub.2 as will 
hereinafter be described in detail. 
The window sash assembly S.sub.2 further includes a lower frame 238 secured 
to the outer surface of the windowsill 202 and forming a floor for the 
window covering portion 208 and the window panel housing portion 209. The 
lower frame 238 includes a vertical base portion 239 contacting the outer 
surface of the windowsill 202. The base portion 239 has an upper edge 
which is bent in an indoor direction to form a horizontally extending 
mounting flange 240 contacting the upper surface of the windowsill 202 and 
secured thereto by nails 241. The base portion 239 has a lower edge 242 
which is bent outwardly and then inwardly to contact the outer surface of 
the windowsill 202 at an angle thereto. The lower edge 242 is nailed to 
the windowsill 202 as at 243. The lower frame 238 further includes a 
bottom member 244 which has an inner edge joined to the base portion 239 
and generally horizontally extends outwardly. The lower frame 238 also 
includes a head member 245 having an inner edge joined to the base portion 
239 and formed by a first slide web 246 extending outwardly generally 
horizontally with a slight downward inclination, and a horizontally 
extending second slide web 247 which is located at a somewhat lower level 
of height than the first slide web 246 and integrally connected thereto by 
a vertical intermediate connecting portion. 
A pair of rails 248 and 249 are provided on the first slide web 246 and 
support thereon the inner and outer glazed window panels 205A and 205B, 
respectively. Another pair of parallel rails 250 and 251 are provided on 
the second slide web 247 and support thereon the inner and outer screen 
windows 206. The rails 248 and 251 extend in parallel to one another 
longitudinally of the lower frame 238. 
The lower frame 238 further includes a vertical outer edge member 252 
having an upper end joined to the outer edge of the second slide web 247 
and a lower end joined to the outer edge of the bottom member 244. The 
outer edge member 252 is formed on its inner surface with a pair of 
vertically spaced increased thickness portions 253 and 254. The upper 
increased thickness portion 253 defines on the opposite surface of the 
outer edge member 252 a horizontally extending groove 258 in which a third 
slide web 255 is received at its inner edge to support the shutters 207 
thereon. The outer edge of the third slide web 255 lies substantially in 
the vertical plane of the outer edge 223 of the upper frame 211 and is 
formed with a pair of vertically projecting flanges 256 and 257. The upper 
flange 256 extends upwardly to define with the outer edge of the second 
slide web 247 a lower sliding groove for the shutters 207. The lower 
flange 257 extends downwardly. The lower frame 238 is further provided 
with a plurality of longitudinally extending screw receiving grooves 259 
formed on the lower surface of the head member 245 and on the upper 
surface of the bottom member 244 for the purpose similar to that for which 
the grooves 237 are provided on the upper frame 211. 
The window panel housing portion 209 is located on the outdoor side of the 
post 203, another post 261 and a wall 260 extending between the posts 203 
and 261. The shutter box portion 210 is located outwardly of the window 
panel housing portion 209. The outer edge 223 of the upper frame 211 is 
interrupted on the outdoor side of the window panel housing portion 209 
for a distance which is long enough to provide clearance space for 
mounting the shutter box portion 210. Likewise, the third slide web 255 is 
interrupted for the corresponding distance, whereby a connecting portion 
262 is formed to connect the shutter box portion 210 and the third slide 
web 255. The upper flange 240 of the base portion 239 of the lower frame 
238 is interrupted in the area between the posts 203 and 261 to form a 
mounting flange extension 240A secured to the windowsill 202 in the area 
between the posts 203 and 261. 
An upper frame extension 263 is provided on the outdoor side of the window 
panel housing portion 209 and connected to the upper frame 211 to form a 
roof for the shutter box portion 210. The upper frame extension 263 
comprises a horizontal base portion 264 secured to the top of the fifth 
sliding groove 236 of the upper frame 211, and a horizontal web 265 
positioned at a slightly lower level than the base portion 264 and lying 
in the horizontal plane of the bottom member 216 of the upper frame 211. 
The web 265 outwardly extends and terminates in an outer edge downwardly 
bent to form a vertical flange 266 having an upper edge projecting above 
the level of the web 265. Inwardly of the flange 266, there is provided a 
partition 267 extending downwardly from the underside of the web 265 to 
define with the flange 266 a downwardly opening groove 268. A plurality of 
screw receiving grooves 265 are provided on the upper surface of the web 
265 for the purpose which will hereinafter become clear. The base portion 
264 is secured to the bottom member 216 of the upper frame 211 by screws 
270. 
A lower frame extension 271 is provided on the outdoor side of the window 
panel housing portion 209 and connected to the lower frame 238 to form a 
floor for the shutter box 210. The lower frame extension 271 has an equal 
width of horizontal outward extension to the upper frame extension 263 and 
terminates in a vertical outer end flange 272 lying in the vertical plane 
of the similar flange 266 on the upper frame extension 263. The lower 
frame extension 271 has an inner edge 273 which is L-shaped in cross 
section. An upright partition 274 is formed on the upper surface of the 
lower frame extension 271 and lies in the vertical plane of the partition 
267 on the upper frame extension 263. The outer flange 272 and the 
partition 274 define an upwardly opening groove 275 therebetween. A 
plurality of screw receiving grooves 276 are formed on the underside of 
the lower frame extension 271 for the purpose which will hereinafter 
become clear. 
The lower frame extension 271 has an inner lateral edge engaged with the 
connecting portion 262 adjacent to the third slide web 255 of the lower 
frame 238. The L-shaped inner edge 273 of the lower frame extension 271 is 
received in the groove 258 in the lower frame 238. The upper surfaces of 
the third slide web 255 and the lower frame extension 271 reside in a 
common horizontal plane in which the upper surface of the connecting 
portion 262 also lies. The connecting portion 262 includes a connecting 
member 277 of the upwardly open channel-shaped construction abutting on 
the lower surfaces of the third slide web 255 and the lower frame 
extension 271 and fastened thereby by screws 278. The connecting member 
277 has an outer wall contacting the inner surface of the outer flange 257 
of the third slide web 255, and an inner wall contacting the inner flange 
273 of the lower frame extension 271 as shown in FIG. 8. 
A pair of brackets 279 are provided to connect the lower frame extension 
271 to the lower frame 238 to thereby support the shutter box 210. Each 
bracket 279 comprises a generally triangular body plate 280 and an 
inverted L-shaped connecting flange 281. The connecting flange 281 
includes a horizontal portion 282 contacting the underside of the lower 
frame extension 271 and fastened thereto by a screw 283, and a vertical 
portion 284 contacting the outer flange 252 of the lower frame 238 and 
fastened to the lower increased thickness portion 254 of the outer flange 
252 by screws 285. 
The window sash assembly S.sub.2 further includes a vertical side frame 286 
fastened to the outer surface of the post 261 and extending outwardly to 
form a lateral edge for the window panel housing portion 209 and the 
shutter box 210. The side frame 286 includes a vertical hollow support 288 
of rectangular cross section having a rectangular hollow space 287 
therein. The hollow support 288 has a width of outward extension equal to 
the width of the upper and lower frames 211 and 238 and forms a side wall 
for the window panel housing portion 209. The hollow support 288 includes 
a vertical partition 289 dividing the hollow space 287 into two halves. 
The hollow support 288 has an outer side wall 290 extending outwardly 
beyond the window panel housing portion 209 to form a side wall 291 for 
the shutter box 210. The side wall 291 has an outer edge bent inwardly (to 
the right as viewed in FIG. 6) to define an outer flange 292. A partition 
293 is provided inwardly of the outer flange 292 in parallel thereto to 
define a laterally inwardly open groove 294. The outer side wall 290 is 
formed along its inner edge with a laterally outwardly projecting mounting 
flange 296 contacting the outer surface of the post 261 at an angle 
thereto. The hollow support 288 further includes an inner side wall 295 
having an inner edge formed with a laterally inwardly projecting mounting 
flange 297 contacting the outer surface of the post 261 at an angle 
thereto. The mounting flanges 296 and 297 are fastened to the post 261 by 
nails 299. The side frame 286 has an upper end fastened to the upper frame 
211 and the upper frame extension 263 by screws 298 received in the screw 
engaging grooves 237 and 269. Likewise, the side frame 286 has a lower end 
fastened to the lower frame 238 and the lower frame extension 271 by 
screws 298 received in the screw engaging grooves 259 and 276. 
The shutter box 210 has an inner side wall 300 having an inner edge engaged 
with the outer edges of the upper and lower frames 211 and 238 in the area 
of the connecting portion 262. The inner side wall 300 extends slightly 
beyond the outer side wall 291 and has an outer edge bent outwardly (to 
the left as viewed in FIG. 6) to form an outer flange 301. A partition 302 
is formed inwardly of the outer flange 301 to define a laterally outwardly 
open groove 303 facing the groove 294 of the outer side wall 291. The 
inner side wall 300 has an upper end fastened to the upper frame extension 
263 by screws 304 received in the screw engaging grooves 269, and a lower 
end secured to the lower frame extension 271 by screws 304 received in the 
screw engaging grooves 276. 
The window sash assembly S.sub.2 further includes another vertical side 
frame 305 forming a side wall for the window covering portion 208. The 
side frame 305 includes a vertical hollow support 307 of rectangular cross 
section having a rectangular hollow space 306 and secured to the post 204 
at the window opening W. The hollow support 307 has an outer end wall 
having on its outer surface a dovetail groove 309 receiving a 
dovetail-shaped sealing member 308. The hollow support 307 has an outer 
side wall 310 extending outwardly beyond the outer end wall to define a 
side wall 311 for the window covering portion 208. The side wall 311 has 
an outer extremity which is bent inwardly or to the left as viewed in FIG. 
6. The hollow support 307 has an inner side wall 312 formed with a 
slightly inclined mounting flange 313. Likewise, the outer side wall 310 
is formed with a slight inclined mounting flange 314. The mounting flanges 
313 and 314 are fastened to the post 204 by nails 316. The side frame 305 
has an upper end secured to the upper frame 211 by screws 315 received in 
the screw engaging grooves 237, and a lower end fastened to the lower 
frame 238 by screws 315 received in the screw engaging grooves 259. 
Numeral 317 denotes a vertical decorative member attached to the inner 
lateral surface of the post 204. 
The window sash assembly S.sub.2 further comprises a vertical partition 
pillar 318 of rectangular hollow construction mounted between the upper 
and lower framrs 211 and 238 at the boundary between the window covering 
portion 208 and the window panel housing portion 209, and supported on the 
outer surface of the post 203 at the window opening W. The partition 
pillar 318 has a hollow inner space 319 of rectangular cross section. The 
partition pillar 318 has an outer end wall 320 formed on its outer surface 
with a pair of dovetail grooves 322 in each of which a dovetail-shaped 
sealing member 321 is received. The partition pillar 318 includes a side 
wall 323 formed with a laterally outwardly projecting mounting flange 324 
contacting the outer surface of the post 203 at an angle thereto. The 
partition pillar 318 has an inner end wall 326 facing the post 203 and an 
adjustable connecting member 325 is attached to the inner end wall 326. 
The connecting member 325 has an inverted L-shaped configuration in cross 
section as shown in FIG. 6. The connecting member 325 has an outer portion 
327 contacting the inner end wall 326 of the partition pillar 318 and an 
inner portion 329 contacting the inner lateral surface of the post 203. As 
shown in FIG. 9, the outer portion 327 is provided with three elongate 
holes 328. The inner portion 329 is provided with three circular holes 330 
as shown in FIG. 10. Each of the holes 330 is positioned in the horizontal 
plane of one of the holes 328 as is obvious from FIGS. 9 and 10. The outer 
surface of the inner portion 329 provides a reference vertical plane 331 
for mounting the sash assembly S.sub.2 relative to the window opening W. 
The outer portion 327 is secured to the inner end wall 326 of the 
partition pillar 318 by screws 332 extending through the holes 328. The 
inner portion 329 is fastened to the post 203 by screws 333 extending 
through the holes 330. The mounting flange 324 is secured to the post 203 
by nails 334. A lock 335 is provided on the inner side wall of the 
partition pillar 318. Numeral 336 indicates a vertical decorative member 
attached to the inner surface of the post 203. 
The inner glazed window panel 205A comprises a rectangular framework formed 
by an upper frame member 337, a lower frame member 338 and a pair of 
vertical frame members 339 and 340. A pane of glass 341 is fitted to the 
framework by sealing material 342. The inner vertical frame member 340 is 
provided on its outdoor side with an inverted L-shaped locking member 343 
in which a sealing member 344 is received. A lock 345 is provided on the 
inner vertical frame 340. The outer vertical frame 339 is provided with a 
lock hook 346 engageable by the lock 335 provided on the partition pillar 
318. 
The outer glazed window panel 205B comprises a rectangular framework formed 
by an upper frame member 337, a lower frame member 338 and a pair of 
vertical frame members 339 and 347. A pane of glass 341 is fitted to the 
framework by sealing material 342. The inner vertical frame 347 is 
provided on its indoor side with an L-shaped locking member 348 in which a 
sealing member 349 is provided and which is engageable with the locking 
member 343 on the inner panel 205A as shown in FIG. 6. The inner vertical 
frame 347 is also provided with a lock hook 350 engageable by the lock 345 
on the inner panel 205A. 
Each of the screen windows 206 comprises a rectangular framework formed by 
an upper frame member 351, a lower frame member 352, a pair of vertical 
frame members 353 and a horizontal middle frame member 354. A pair of wire 
nets 355 are fastened to the framework by fastening members 356. Each 
shutter 207 comprises a rectangular framework formed by an upper frame 
member 357, a lower frame member 358, a pair of vertical frame members 359 
and 360 and a horizontal middle frame member 361. A pair of corrugated 
plates 362 of light metal or alloy, such as aluminum, are fitted to the 
framework. 
The outer end of the shutter box 210 is closed by a front plate 363 formed 
by channel-shaped frame members 364 to which a corrugated plate 365 of 
light metal or alloy, such as aluminum, is riveted as at 366. The 
peripheral edges of the front plate 363 are held within the grooves 268, 
275, 294 and 303 of the upper frame extension 263, the lower frame 
extension 271, and the side walls 286 and 300 of the shutter box 210, 
respectively. 
It will be understood that the elongate holes 328 of the connecting member 
325 will advantageously provide the necessary longitudinal (horizontal) 
positional adjustment for the window sash assembly S.sub.2 to position it 
correctly relative to the window opening W. 
The various components of the window sash assembly according to this 
invention may advantageously be formed from extruded aluminum or any other 
appropriate metal or alloy.