Sashes for a closure

A closure with sashes includes a closure body, an inner sash enclosing around the closure body and including a first upper rail, a first lower rail, a first left stile and a first right stile and an outer sash matchable with the inner sash, including a second upper rail, a second lower rail, a second left stile and a second right stile and adapted to be mounted on a wall of a building wherein there exists a characteristic that the first upper rail is identical to the first lower rail in shape.

BACKGROUND OF THE INVENTION 
The present invention relates to a closure, e.g. a door or the like, and 
more particularly to a closure with sashes. 
The known sashes for a closure, e.g. a door(window) shown in FIG. 1, have 
their sectional views as shown in FIGS. 2 & 3. Such sashes can be 
criticized in several aspects set out as follows: 
(1) Different structural rails or stiles must be used for such sashes 
which, in this instance, include an upper rail 101, a lower rail 102 and a 
common stile 103 of the outer sash and upper rail 111, a lower rail 112, a 
side stile 113 and a meeting stile 114 of the inner sash, all of which 
amount to 7 different structures. It would be highly appreciated if one 
could minimize the numbers of different structures. 
(2) Owing to the structural nature of upper rail 101 as shown in FIG. 2, 
the degree that upper rail 111 can be lifted and inclined to enable the 
inner sash to be detached from upper rail 101 is quite limited. Thus, the 
disengagement between the inner and outer sashes is difficult. 
(3) The rooms 105, 106 formed between upper rails 101, 111 are not equally 
divided. Therefore, they cannot be fully packed by the same sealing piece 
for the air(water)-tight purpose which is desired in some circumstances, 
e.g. an air-conditioned chamber. 
(4) For mounting therein a roller 131, lower rail 112 must be provided with 
a receiving room 115. However, roller 131 cannot wholly occupy receiving 
room 115 to admit the wind/rain penetrating therethrough into the room 
intended to be closed by the closure. 
(5) For guiding roller 131, two guiding rails 109 must be formed on lower 
rail 102. Thus, side stile 113 and meeting stile 114 must be notched for 
passing rails 109, which in turn adds to mitigate the air(water)-tight 
capability of such sashes. One may have had the experience of a door or 
window being whistling which was caused by the fact that the sashes 
thereof do not have a good air(water)-tight capability. In addition, two 
water accumulating rooms 132, 133 are formed beside rails 109 for 
discharging the water possibly contained therein. Generally, rails 109 are 
cut down to the upper surface of the bottom plate 108 at predetermined 
positions, which, also, enhances to reduce the air(water)-tight effect of 
such sashes. 
(6) With two L-shaped flanges 115 respectively provided on two meeting 
stiles 114 to engage with each other, the air(water)-tight effect is not 
adequate. Besides, the strength of L-shaped flanges 115 for enduring the 
meeting impact of meeting stiles 114 is often found to fall short. 
(7) The rails and stiles of such sashes when fit up on a wall 150 form a 
shoulder portion 121 upon where it is an inconvenience to be decorated, 
e.g. coated, thereon. 
(8) Such sashes can not mount thereon a grille. 
(9) It is compulsory that the ends of upper rail 101, lower rail 102 be 
provided with plastic stoppers for preventing the collision between common 
stile 103 and side stile 113. 
In view of the above facts, it is attempted by the applicant to deal with 
the above situations. 
SUMMARY OF THE INVENTION 
It is therefore an object of the present invention to provide sashes for a 
closure which include minimized different structural rails and stiles. 
It is therefore another object of the present invention to provide sashes 
for a closure which provide an optimized air(water)-tight effect. 
It is further an object of the present invention to provide sashes for a 
closure which can be fitted easily onto a wall. 
It is still an object of the present invention to provide sashes for a 
closure which can additionally mount thereon a grille with an extending 
structure. 
It is yet an object of the present invention to provide sashes for a 
closure which enable the wall on which it is fitted to be capable of being 
decorated easily. 
It is additionally an object of the present invention to provide sashes for 
a closure which remains silent on a windy day. 
According to the present invention, sashes for a closure comprise an inner 
sash including a first upper rail, a first lower rail, a first left stile 
and a first right stile and adapted to enclose around a closure body and 
an outer sash matchable with the inner sash, including a second upper 
rail, a second lower rail, a second left stile and a second right stile 
and adapted to be mounted on a wall of a building wherein there is a 
characteristic that the first upper rail is indentical to the first lower 
rail in shape. 
Preferably the second left stile is indentical to the second right stile in 
shape. 
The second upper rail can include a central vertical diaphragm plate for 
separating the cross-sectional area of the second upper rail into two 
equal parts. Generally one of the first left stile and first right stile 
is a meeting stile which has a meeting side near the line constituted by 
the middle points of the cross-sections of the second left and right 
stiles and has a cross-section including a first end formed thereon a 
first receiving room for receiving and securing therein a first side of 
the closure body, an L-shaped flange attached to the outer surface of the 
meeting side, near the first receiving room and having vertical portion 
thereof parallel to the outer surface to form therebetween a receiving 
space, a second end formed thereon a second receiving room and a first 
grooved channel formed on the outer surface and near the second receiving 
room. 
The inner sash being rotated 90 degress with the other one of the first 
left stile and first right stile kept vertically spaced from and parallel 
to the meeting stile is still capable of matching with the outer sash. 
Preferably the sashes further include a first sealing piece mounted in the 
first grooved channel and having a width capable of reaching the line and 
a straight flange secured to the end edge of the first grooved channel and 
having a width extending to terminate on the line. 
Preferably the first sealing piece has a length equal to that of the 
meeting stile. 
Preferably the sashes further include a cushioning piece and a second 
sealing piece. The inner side of each of the second left and right stiles 
is provided with a protrusion. The cross-section of the other one of the 
first left and right stiles has a first end formed thereon a first 
receiving room for receiving and securing therein a second side of the 
closure body and a second end formed thereon a second receiving room 
receiving therein the cushioning piece by which the impact force between 
the the other one of the first left and right stiles and either one of the 
second left and right stiles is cushioned when the the other one of the 
first left and right stiles is impacted upon the one of the second left 
and right stiles and the cushioning piece is impacted upon the protrusion. 
The inner side of the second receiving room receiving the cushioning piece 
is provided with a second grooved channel which receives therein the 
second sealing piece which is capable of engaging with the protrusion for 
air-tight purposes when the protrusion engages with the cushioning piece. 
Preferably the second lower rail includes two parallel shallow socket 
channels each of which is adapted to slide thereon a roller which carries 
the closure. 
Preferably the sashes further includes two third receiving rooms each of 
which is formed between the first and second receiving rooms of either one 
of the first left and right stiles, two axial protrusions respectively 
provided on the two sides of the roller and a roller mounting piece 
capable of being received in one of the third receiving rooms, having an 
indentation which has a shape corresponding to that of the roller for 
receiving it therein and has a depth smaller than the diameter of the 
roller so that the rest portion of the roller is not received in the 
indentation but can slide on the arc surface of one of the shallow socket 
channels, and having a grooved channel alongside the outer side, which is 
the side near the outside of the building, of one of the shallow socket 
channels. 
Preferably the cross-section of the first upper rail includes a first end 
formed a first receiving room for receiving and securing therein a third 
side of the closure body and a second end having a third grooved channel 
positioned alongdside the central vertical diaphragm plate and a fourth 
grooved channel near one side of the second upper rail. 
Preferably the sashes further includes a fourth sealing piece capable of 
being received in the fourth grooved channel and having a width capable of 
reaching the inner surface of the one side for air-tight purposes. 
Preferably the cross-section of the first lower rail is identical to that 
of the first upper rail, is disposed upsidedown and includes a 
corresonding first end formed a first receiving room for receiving and 
securing therein a fourth side of the closure body and a corresponding 
second end having a corresponding third grooved channel positioned 
alongside the outer side of one of the shallow socket channels and a 
corresponding fourth grooved channel capable of being positioned above the 
inner side, which is the side near the inside of the building, of one of 
the shallow socket channels. 
Preferably the sashes further includes a third sealing capable of being 
received in the corresponding third grooved channel and having a width 
capable of reaching the outer surface of the outer side of the one of the 
shallow socket channels for air-tight purposes. 
Preferably the sashes further includes an insert which is capable of 
packing the room formed among the central vertical diaphragm plate, the 
inner portion of the second upper rail and the area above one of the first 
left and right stiles. 
Preferably the sashes further includes a stabilizing piece, which includes 
a first end capable of engaging with the inner side of one of the shallow 
socket channels and a second end capable of engaging with the 
corresponding fourth grooved channel, for ensuriung that the roller will 
not fall out of the shallow socket channel upon which it slides. 
Preferably the outer side of the second upper rail includes a first 
vertical plate and a second vertical plate which is parallel to the first 
vertical plate and cooperates with the first vertical plate to form a 
first guiding room therebetween. 
Preferably the outer side of the second lower rail is mounted thereon a 
curved flange to form thereon a second guiding room. 
Certainly the sashes can further include a netted closure with an inner 
sash which has an upper rail capable of being guided to slide within the 
first guiding room, has a lower rail capable of being guided to slide 
within the second guiding room and includes a rail-stile connector which 
includes a first protrusion capable of engaging with a rail of the inner 
sash of the netted closure, a second protrusion positioned perpendicular 
to the first protrusion and capable of engaging with a stile of the inner 
sash of the netted closure and a C-shaped flange which is attached to the 
outer surface of the outer side of the connector, has the central portion 
thereof capable of being parallel to the outer surface of the connecter 
and has the lower portion thereof being capable of engaging with the 
bottom surface of the curved flange. 
Preferably the sashes further includes a lock body capable of being secured 
in the second receiving room of the meeting stile and capable of being 
adpated to engage with a plate lock hook which is capable of fixedly 
hooking thereon the lock body. 
Preferably the sashes further includes the plate lock hook which includes a 
lower portion which is capable of being inserted into the receiving space 
and has a first side capable of engaging with the outer surface of the 
meeting side and a second side which is the side opposite to the first 
side and capable of cooperating with the vertical portion of the L-shaped 
flange to form therebetween a screwing space by which the plate lock hook 
is secured in the receiving space when the screwed space is adapted to be 
screwed into by a screw. 
Certainly the sashes can further include an intermediate rail which is 
positioned between and parallel to the second upper rail and the second 
lower rail and is constituted by a third lower rail indentical to the 
second lower rail in cross-section and a third upper rail indentical to 
the second upper rail in cross-section with the third upper rail 
positioned right beneath and parallel to the third lower rail. 
Certainly the sashes can further include a grille with a frame which 
includes a fourth upper rail, a fourth lower rail, a fourth left stile and 
a fourth right stile all of which bear the same cross-section which 
includes a first end formed a receiving room for receiving therein a side 
of the grille and a second end having the outer side thereof formed a 
grooved channel adapted to receive therein a side of a netted closure and 
the inner side thereof formed a fifth grooved channel. 
Certainly, the sashes can further include an extending rail which is 
engagable with and capable of being secured outside of and against one of 
the first guiding room and second guiding room. 
Certainly, the sashes can further include a C-shaped piece. The second 
vertical plane has a second protrusion. The inner side of the extending 
rail has a corresponding protrusion capable of engaging with the second 
protrusion. The outer side of the extending rail has a third vertical 
plate positioned at the outside of the third upper rail and a sixth 
grooved channel positioned right above the fifth grooved channel so that 
the C-shpaed piece has two end portions thereof capable of being securely 
engaging with the fifth and sixth grooved channels respectively. 
Certainly, the sashes can further include an extending stile which is 
engagable with and capable of being secured outside of and against one of 
the outer side, the inner surface of which is provided with two third 
protrusions, of the second left stile when viewing from the outside of the 
building and the outer side of the second right stile. 
Preferably the inner side of the extending stile is provided with two 
corresponding protrusions which are capable of engaging with the third 
protrusions respectively to enable the extending stile engagable with and 
capable of being secured outside of and against the outer side of the 
second left stile and the outer side of the extending stile bears a 
cross-section identical to that of the outer side of the extending rail. 
Certainly, the cross-section of the second upper rail can have the central 
portion thereof been lengthened to form a central guiding room which is 
capable of guiding therein the first upper rail. The cross-section of the 
second lower rail can have the central portion thereof lengthened to form 
thereon a third shallow socket channel which is similar to either one of 
the shallow socket channels in structure. The cross-section of the second 
left stile can have the central portion thereof lengthened by a distance 
equal to that lengthened in the cross-section of either one of the second 
upper and lower rails. 
Preferably each of the inner side of the second upper rail, the inner side 
of the intermediate rail, the inner side of the second lower rail, the 
inner side of the second left stile, which is the stile positioned at the 
left side when viewing from the outside of the building, and the inner 
side of the second right stile is provided with a side frame the side 
surface of the inner side of which is incapable of being submerged into 
the plane which is constituted by the surface of the inner side of the 
wall. 
Preferably the side, which is the side opposite to the meeting side, of the 
meeting stile is provided with a side frame which when positioned in the 
inner side of the meeting stile is capable of being coplanar with the side 
frames of said outer sash. 
The structure of the outer sash above described can be incorporated into 
being used for sashes for a revolvable closure which can further include 
an extending structure which is capable of being disposed upon any one of 
the second upper rail, lower rail, left stile and right stile of the outer 
sash, an inner sash capable of, through the extending structure, matching 
with the outer sash and a sliding mechanism which is secured between the 
outer sash and the extending structure for enabling the inner sash to 
swing either inwardly or outwardly with respect to the outer sash. 
Preferably, such sashes for a revolvable closure further includes a sealing 
piece. The extending structure includes a plate protrusion which further 
includes a grooved channel which can receive therein the sealing piece 
which can sealingly engage with the inner sash. 
Certainly, such sashes for a revolvable closure can further include a 
netted closure with an enclosing sash. The plate protrusion includes a 
cylindrical protrusion formed on the side opposite to that forming the 
grooved channel. The enclosing sash includes a third upper rail, a third 
lower rail, a third left stile and a third right stile, between each rail 
and stile of which there is a rail-stile connector having an arc flange 
matchable with the cylindrical protrusion with one of the four arc flanges 
of the four connecters capable of being revolvably and firmly engaging 
with the cylindrical protrusion. 
The present invention may best be understood with reference to the 
accompanying drawings, in which:

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
Referring now to FIGS. 1, 4 & 5, there are shown sashes for a closure 
according to the present invention which includes an inner sash including 
a first upper rail 23, a first lower rail having the same structure as 
that of rail 23, a first left(right) stile 29 and a first right(left) 
stile being a meeting stile 30 and adapted to enclose a closure body 35 
and an outer sash matchable with the inner sash, including a second upper 
rail 21, a second lower rail 22, a second left stile 28 and a second right 
stile having a structural shape identical to that of stile 28 and adapted 
to be mounted on a wall of a building. Second upper rail 21 has a central 
vertical diaphragm plate 212 for seperating the cross-section area thereof 
into two equal parts 213, 214. Meeting stile 30 has a meeting side 301 
near the line constituted by the middle points of the cross-sections of 
second left and right stiles 28 and has cross-section which includes a 
first end formed thereon a first receiving room 308 for receiving and 
securing therein a first side of closure body 35, an L-shaped flange 303 
which is attached to the outer surface of meeting side 301, is near first 
receiving room 308 and has the vertical portion thereof parallel to the 
outer surface to form therebetween a receiving space 306, a second end 
formed thereon a second receiving room 309 and a grooved channel 304 
formed on the outer surface and near second receiving room 309. A sealing 
piece 37 mounted in grooved channel 304 has a width capable of reaching 
the line and has a length equal to that of meeting stile 30. A straight 
flange 302 secured to the end edge of grooved channel 304 has a width 
extending to the above said line and is capable of engaging with the 
L-shaped flange 303 of another meeting stile 30 when the two meeting 
stiles 30 meet together. The inner side of each of second left and right 
stiles 28 is provided with a protrusion 281. The cross-section of first 
left(right) stile 29 has a first end formed thereon a first receiving room 
292 for receiving and securing therein a second side of closure body 35 
and a second end formed thereon a second receiving room receiving therein 
a cushioning piece 31 as shown in FIG. 10 by which the impact force 
between first left(right) stile 29 and second left(right) stile 28 is 
cushioned when first left(right) stile 29 is impacted upon second 
left(right) stile 28 and cushioning piece 31 is impacted upon protrusion 
281. The inner side of second receiving room 291 is provided with a 
grooved channel 293 receiving therein a sealing piece 36 capable of 
engaging with a first surface 283 of protrusion 281 which has a second 
surface 282 engaging with a surface 311 of cushioning piece 31 for 
air-tight purposes when protrusion 281 engages with cushioning piece 31. 
Second lower rail 22 includes two parallel shallow socket channels 222, 
223 each of which is to slide thereon a roller 33 as shown in FIG. 8 which 
carries the load of a closure with the present sashes. Between first and 
second receiving rooms 292, 291 of the first left(right) stile 29 there is 
formed a third receiving room 294. Two axial protrusions 331 acting as an 
axis of rotation of roller 33 are respectively provided on the two sides 
of roller 33. A roller mounting piece 32, as shown in FIG. 7, is capable 
of being received in third receiving room 294 or a third receiving room 
305 formed between first and second receiving rooms 308, 309, has an 
indentation 324 which has a shape corresponding to that of roller 33 for 
receiving it therein and has a depth smaller than the diameter of roller 
33 so that the rest portion of roller 33 not received in indentation 324 
can slide along the arc surface of one of shallow socket channels 222, 223 
and has a protrusion 322 having a grooved channel 321 which, when roller 
mounting piece 32 is received in third receiving room 294, is to be 
disposed alongside the outer side, which is the side near the outside of 
the building, of one of shallow socket channels 222, 223. The 
cross-section of first upper rail 23 includes a first end formed thereon a 
first receiving room 231 for receiving and securing therein a third side 
of closure body 35 and a second end having a grooved channel 233 
positioned alongside central diaphragm plate 212 and a grooved channel 235 
near one side of second upper rail 21 for receiving therein a sealing 
piece 26 which has a width capable of reaching the inner surface of the 
one side for air-tight purpose. The cross-section of the first lower rail 
is identical to that of first upper rail 23, is disposed upsidedown and 
includes a corresponding first end formed thereon a first receiving room 
231' for receiving and securing therein a fourth side of closure body 35 
and a corresponding second end having a corresponding grooved channel 233' 
positioned alongside the outer side of one of shallow socket channels 222, 
223 for receiving therein a sealing piece 271 which has a width capable of 
reaching the outer surface of the outer side of the one of shallow socket 
channels 222, 223 for air-tight purposes and a corresponding grooved 
channel 235' capable of being positioned above the inner side, which is 
the side near the inside of the building, of one of shallow socket 
channels 222, 223. An insert 25, as shown in FIG. 9, is capable of packing 
the room 232(234) formed among central vertical diaphragm plate 212, the 
inner portion of second upper rail 21 and the area above first left(right) 
stile 29 as shown in FIG. 6. A stabilizing piece 57 includes a first end 
capable of engaging with the inner side 228 of shallow socket channel 222 
and a second end capable of engaging with corresponding grooved channel 
235' for ensuring that roller 33 will not fall out of the shallow socket 
channel 222(223) upon which it slides. FIG. 12 shows how roller 33, roller 
mounting piece 32 and second lower rail 22 are in cooperation. The outer 
side of second upper rail 21 includes a first vertical plate 215 and a 
second vertical plate 216 which is parallel to and cooperates with first 
vertical plate 215 to form a first guiding room 217 therebetween. The 
outer side of second lower rail 22 is mounted thereon a curved flange 227 
to form thereon a second guiding room. A netted closure 350 has an inner 
sash 24 which as an upper rail capable of being guided to slide within 
first guiding room 217, has a lower rail capable of being guided to slide 
within the second guiding room and includes a rail-stile connector 38, as 
shown in FIG. 25, which includes a first protrusion 382 capable of 
engaging with a rail of inner sash 24, a second protrusion 383 positioned 
perpendicular to first protrusion 382 and capable of engaging with a stile 
of inner sash 24 and a C-shaped flange 381 which is attached to the outer 
surface of the outer side of connector 38, has the central portion thereof 
capable of being parallel to the outer surface of connecter and has the 
lower portion thereof being capable of extending into a bottom space 226 
of second lower rail 22 and engaging with the bottom surface of curved 
flange 227. A lock body 307, secured in second receiving room 309 of a 
meeting stile 30, engages with a plate lock hook 34, as shown in FIG. 11, 
which is capable of fixedly hooking thereon lock body 307 and includes a 
lower portion 341 which is capable of being inserted into receiving space 
306 and has a first side capable of engaging with the outer surface of 
meeting side 301 and a second side which is the side opposite to the first 
side and capable of cooperating with the vertical portion of L-shaped 
flange 303 to form therebetween a screwing space by which plate lock hook 
34 is secured in receiving space 306 when a screw 39 is screwed into the 
screwing space. In addition, it can be noticed from FIG. 4 that second 
lower rail 22 only contains a water accumulating room 224 and the water 
possibly contained therein can be drained away by drilling holes (not 
shown) beneath shallow socket channel 222. 
FIGS. 13-16 show further a closure of the sliding type. The sashes for such 
a closure further includes an intermediate rail 41 which is positioned 
between and parallel to second upper rail 21 and second lower rail 22 and 
is constituted by a third lower rail 414 identical to second lower rail 22 
in cross-section and a third upper rail 415 identical to second upper rail 
21 in cross-section with third upper rail 415 positioned right beneath and 
parallel to third lower rail 414. A grille 43 has a homogenized frame 
which includes a fourth upper rail, a fourth lower rail, a fourth left 
stile and a fourth right stile all of which bear the same cross-section 42 
which includes a first end formed a receiving room 421 for receiving 
therein a side of grille 43 and a second end having the outer side thereof 
formed with a grooved channel 422 receiving therein a side 441 of a netted 
closure 44 and inner side thereof formed with a fifth grooved channel 424. 
There is further provided with an extending rail 45 which is engagable 
with and capable of being secured outside of and against first guiding 
room 217 or the second guiding room 218 formed by curved flange 227. 
Second vertical plate 216 has a protrusion 2171 engagable with a 
corresponding protrusion 2172 formed on the inner side of extending rail 
45 (Such engagement also occurs to third upper rail 415). The outer side 
of extending rail 45 has a vertical plate 452 positioned on the outside of 
third upper rail 415 and a grooved channel 454 positioned right above 
grooved channel 424 so that two bent end portions 461, 462 of a C-shaped 
piece 46, as shown in FIG. 16, are capable of being securely engaging with 
grooved channels 424, 454 respectively. C-shaped piece 46 has a central 
groove 464 so that C-shaped piece 46 can securely engage with grooved 
channels 424, 454 by initially engaging a screwdriver with central groove 
464 in a horizontal direction and then, turning C-shaped piece 46 to an 
upright position. There is further provided an extending stile 47 which is 
engagable with and capable of being secured outside of and against the 
outer side of second left stile 28 when viewing from the outside of the 
building and the outer side of the second right rail 28. The inner surface 
of the outer side of second left stile 28 is provided with two protrusions 
285, 287 and the inner side of extending stile 47 is provided with two 
corresponding protrusions 472, 476 respectively engagable with protrusions 
285, 287. It can be noticed that the outer side of extending stile 47 
bears a cross-section identical to that of the outer side of extending 
rail 45. FIGS. 17-21 show a revolvable closure incorporated thereon the 
outer sash of the present invention. Such a closure is provided with an 
extending structure 48 which is capable of being disposed upon any one of 
second upper rail 21, lower rail 22, left and right stiles 28. The inner 
sash for such a closure can be any of the conventional types and is 
capable of, through extending structure 48, matching with the outer sash. 
A sliding mechanism 248 can also be any one of the conventional types and 
is secured between the outer sash and extending structure 48 to enable the 
inner sash to rotate in a relative rotation with respect to the outer 
sash. Extending structure 48 includes a plate protrusion 483 which further 
includes a grooved channel 485 receiving therein a sealing piece which can 
sealingly engage with the inner sash. Plate protrusion 483 further 
includes a cylindrical protrusion 484 formed on the side opposite to that 
formed grooved channel 485. A netted closure has an enclosing sash which 
includes an upper rail, a lower rail, a left stile and a right stile, 
between each rail and stile of which there is a rail-stile connector 49, 
as shown in FIG. 21, having an arc flange 491 matchable with cylindrical 
protrusion 484 with one of the four arc flanges 491 of the four rail-stile 
connecters 49 capable of being revolvably and firmly engaging with one of 
the four cylindrical protrusions 484 of the four extending structures 48. 
FIGS. 22-24 show further a sliding type closure incorporated with the 
sashes of the present invention. The cross-section of the second upper 
rail 210 is obtained by having the central portion of second upper rail 21 
lengthened to form a central guiding room 2101 which is capable of guiding 
therein first upper rail 23. The cross-section of the second lower rail 
220 is obtained by having the central portion of second lower rail 22 
lengthened to form thereon a third shallow socket channel 2201 which is 
similar to either one of shallow socket channels 222, 223 in structure. 
The cross-section of the intermediate rail 410 can be obtained in a 
similar manner. The cross-section of the second left stile 280 is obtained 
by having the central portion of second left stile 28 lengthened by a 
length equal to that of the lengthened cross-section of either one of 
second upper and lower rails 21, 22. 
Each of the inner side of second upper rail 21, the inner side of 
intermediate rail 41, the inner side of second lower rail 22, the inner 
side of second left stile 28, which is the stile positioned at the left 
side when viewong from the outside of the building, and the inner side of 
second right stile 28' is respectively provided with one of the side 
frames 2100, 4100, 2200, 2800 and 2800' the side surface of the inner side 
of which is incapable of being submerged into the plane which is 
constituted by the surface of the inner side of the wall as shown in FIGS. 
26A-26F wherein FIG. 26F shows that the side, which is the side opposite 
to meeting side 301, of meeting stile 30 is provided with a side frame 
3000 which when positioned at the inner side of meeting stile 30 is 
capable of being coplanar with side frames 2100, 4100, 2200, 2800 & 2800' 
of the outer sash. Thus, the wall can be more easily decorated than that 
which mounts thereon an outer sash to form a shoulder portion like that 
121 shown in the prior art figures. 
FIGS. 27-29 show an additional closure of the sliding type which can 
incorporate into use the sashes of the present invention. The inner sash 
is rotated 90 degrees with first left(right) stile 29 kept vertically 
spaced from and parallel to meeting stile 30 to match with the outer sash. 
Such sashes further include an extending stile 61 which includes two 
protrusions 612, 614 respectively engagable with protrusions 285, 287 of 
second left stile 28 for being secured thereon and is formed a receiving 
room 615 capable of receiving therein inner sash 24 of a netted closure. 
For further securing extending stile 61 on second left stile 28, a screw 
may be provided with to fasten along the dotted line as shown. It should 
be noted that for assembling such sashes, the inner sash must be put in 
the outer sash before extending stile 61 is engaged with second left stile 
28. 
While the invention has been described in connection with what is presently 
considered to be the most practical and preferred embodiments, it is to be 
understood that the the invention is not limited to the disclosed 
embodiments but on the contrary, is intended to cover various 
modifications and equivalent arrangements included within the spirit and 
scope of the appended claims which scope is to be accorded the broadest 
interpretation so as to encompass all such modifications and equivalent 
structures.