US2663917A - Window structure - Google Patents

Description

Dec. 29, 1953 G. D. PETERSON WINDOW STRUCTURE 3 Sheets-Sheet l Filed Jan. 28, 1948 Dec, 29, 1953 G. D. PETERSON WINDOW STRUCTURE 5 Sheets-Sheet 2 Filed Jan. 28, 1948 f JNVENTOR. rd )gege/tina Dec. 29, 1953 G. D. PETERSON WINDOW STRUCTURE 3 Sheets-Sheet 3 Filed Jan. 28, 1948 VENTOR. 'efzg, Praza/5am Patented Dec. 29, 1953 UNITED STATES ATENT OFFICE WINDOW STRUCTURE Application January 28, 1948,-Serial No. 4,794

10 Claims.

This invention .relates to frames for windows, and particularly to a frame of the al1-metal type which may be joined together by mullions which extend the frames to cover any desired length of opening.

It has been the practice heretofore in the art to employ two or more windows to cover an elongated opening in a building and provide a mullion as a separate element to join the windows together.

The present invention substitutes for the adjacent sides of the frame, strip-s which may be joined together hby an expansion joint so that the window frames become a unit extension of each other when filling the window cost of the plurality of frames when so joined together is less lthan the two complete window frames joined by the separate mullion, Further, the mullion employed for joining 'the present frames is not much larger itself, so that the inullion disposed between the frame is not as noticeable as the cumbersome mullion separating the two complete window frames.

A part of each window frame has a Xed window pane therein, while an adjacent part has a horizontally movable sash containing a window pane which is sealed to the frame when in closed position by suitable weatherstrips. Rollers are provided on the movable sash which engage a track on the sill portion of the frame to eliminate friction during the sliding operation. A space is provided above the sliding window vin the vheader structure which permits the movable sash to be raised and moved inwardly at the bottorn with respect to a building in which installed over the track so that it may be removed from the frame. With this arrangement, .the Windows may be readily washed on the inside and outside from the inside of the building.

The sections oi the frame are s0 formed @S to interlock with each other, ,and screws are provided for joining the frame sections at the corners so that the entire yframe may be .shipped in knocked-down condition, occupying very little space. Sealing i -ements are employed on the window frame and on the sliding sash so as to completely seal the sliding window in closed posi mail be employed for retain.. ing the panes in position in the frame or spring strips may be utilized 4for holding the window pane within .the frame. The vtrarne is so constructed as to support a single thickness of glass, or two thicknesses of glass or a Thermopane type window glass may be mounted .directly into opening. The

than the frame section a description ,taken in conjunction Corporation, Detroit,

Z. the .fra-me. A screen or a storm window may be mounted in the opening closed by the sliding window so that the opening may be closed by a screen in summer or by a storm window in the winter,

Anchors are provided which dovetail into the different sections of the window frame by which the frame is secured in the opening when the anchors are nailed to the building. The adjoining sections of the frame are so formed that `the mullion resulting holds the two frame sections together in movable relation to adjust themselves for expansion and contraction of the frames,

Accordingly, the main objects of the invention are: to provide a window made of sections of ,a metal which are securable together to form the header, `sill and lamb sections which are releasa-bly secured together at the corners by screws; to provide a metal frame for a Window having a vertical bar dividing the area into two portions, in one of Which a window pane is xed in position and in the other of which a horizontally movable sash containing a window pane is mounted; to provide adjacent jamb edges on a window frame which are interconnectable to form a mullion which provides an expansion joint between the separate, adjoining window frames; to provide anchors for a Window frame which are releasably locked thereto for supporting the frame in the openingof a building; to provide spring strips for lretaining `one or a pair of window Panes in the window openings of the frame; to provide 'a sill Ventilating section which may be applied to the opening in the frame, covered Vby the IllGVi-tble Sash, on which ,a storm window may root the wntertime; and, in general, to provide a fraglne for a `window which is simple in construef tion, economical of manufacture and which vmay be mounted in extension of each other to lill any elcsiredoponins,

@thor objects and features oi novelty of the invention will be specifically Apointed outl or will become alii-parent when referring, for a bet-ter understanding of the invention, to the following with the accompanying drawings, wherein;

Figure l iis an elevational view from l.the exte rior of two Window frames in mullion arrangement embodying features of this invention;

Fig. 2 is an enlarged broken sectional view of .the struc-ture illustrated in Fig. 1, taken on the .line -Eefz Athereof z Fig. is an enlarged broken sectional view of the .structure,illustrated `in Fig. l, taken on the line @es thereof:

Fig. e is an enlarged broken sectional. view ci the structure illustrated in Fig. l, taken on the line @we thereof;

Fig. 5 is an enlarged view of the structure illustrated in Fig. 1 within the circle e thereof when the sash is inoved to completely open position;

Fig. is a vertical sectional view of the struc ture illustrated in Fig. 1, as viewed within the circle 'ef thereof;

Fig. *i is an enlarged sectional view of the structure illustrated in Fig. i, taken on the line 'i-l thereof;

Fig. 8 is an enlarged exploded view of the header, nountin, Sill and jamb sections of the window frame illustrated in Fig. 1;

lfiig. 9 is an exploded view of a head `and sill and janio element of the Sash which slides within the window freine, with parts broken away, and

Fig. 1G is a sectional riew of a sill ventilator employed in the traine opening.

Referring to Fig. l, a window assembly of the present invention is illustrated, wherein a pair of frames is disposed in an opening, forming a mullion therebetween. Each traine comprises a header' section le, a sill section i i, jamie sections i2 and a mullion iarnb .sectionv Within each frame, xed window panels it are snpported in oset relation with window sash assemblies i5 which may to the left or right in overlapping relation to the lined panes ifi, thereby naving the window assemblies le move to open position.

It is to he understood that any number ci the individual windows may be secured to each other to illl any length oi opening by utilizing the muln lion jarnh sections i3 along the mating edges of each window frame. The window sections iii, which slide horizontally, are supported on a track projecting upwardly from the window sill eetion il and engaged by rollers on the lower edge of the sections to assure ease of movement of the sections. A weatherstrip of the pile type is supported on the sash i5 about the tracl; so as to seal the window at the bottom, and similar sealing strips are employed at the top of the movable sash section on both the inner and outer sides thereof in contact with the header sections is. The stile sections of the movable sash have similar sealing strips projecting outwardly of the sash in engagement with the window frame sections when in completely open or completely closed position. An additional sealing strip is supported on the frame meeting rail between the movable and xed window pane assemelles to be in lateral abutting relation with the weather-strip on the sash when in closed position. This abutting also obtains when the window sash has been shifted to completely open position.

Referring to Fig. 3, the header section lil embodies a header bar having a web il having a downwardly extending portion iE and an in wardly sloping web portion i9. A dovetailed recess 2! is located at the junction between the web il and portion iB. A downwardly projecting nange 22 is provided on the opposite end of the web from the portion it, and a similar downwardly directed flange 23 entends from the end or the weh i9. A dovetailed recess 2i is provided on the outer surface of the web I'l adjecent to the dovetailed slot 2l. This latter dovetail 2!! is employed to receive and be secured by a head anchor 2e which is nailed or otherwise secured to the building structure 25. A dualpurpose inner header and sill section 2 is joined Gil i $3 outwardly or" the irai/ne.

to the web El ci the header section is through the engagement of the dovetail 2S thereof in the dovetailed slot 2l of the portion i5. The inner header and sill section is o U shape having an outer web 2e and innerwel on the end of which the dovetail 2e mentioned above is provided. The webs 29 and El are joined by a base web t2 having downwardly' presented spaced slots 33 and 3d therein. The web 2S extends downwardly at 35 below the base web 32.

The side jamb sections of the raine l2 (Figure el) embody a channel section 35 having a laterally extending weh 3l which is flanged out wardly on the end at A ridge on the cuter surface oi the weh f5? has an outwardly facing slot fil. The web t? is disposed laterally ci a side web et of the channel element having joined thereto the hase web d3 of channel portion which is provided with a of spaced slots ed and @il which are aligned with the slots and 3d, respectively, of the inner header and sill section 2l. .an outer web t extends from the base web oi the channel portion parallel to the web l2 and is provided with an offset portion il having a slot i3 therein aligned with the slot fl! in the ridge S9 in the outer surface oi the web El. A ange lid extends from the offset portion il of the web ili. n. jamie anchor El has a web portion 52 engaged in the slots Ill and li9 from which a web i3 extends in position to be secured to the frame elements of the huilding. Ey reversing the iarnh section oi the frame element l2 end for end, it may be applied to either the right or lett-hand side of the window frame.

The wec of the iiange is extended at all below the oase web and this web is notched out at the top to receive the web (Figure S) and extending ange 35 of the inner header and sill section 2l. This orms the top corners oi the frame which are held together by a pair of screws extending through apertures and are threaded into a pair of apertures 5? in the web i2 of the channel portion of the jarnb section.

The sill section li comprises a sill bar having a web lis (Figures 2 and 3) having on the end a downwardly extending flange and inwardly therefrom a dange di. portion G2 extends upwardly from the web 5S and has an inwardly extending web 63 which slopes upwardly and which is provided with a track and an upwardly extending lip at the inner end. This lip collects the condensation 'from the windows and permits it to iiow down the slope of the web r'he trac?. ay has a slotted perdon te therein which permit., apertures to be drilled therethrough to permit drainage, and any hurrs that may he lei't in the hole need not be removed because of th Lr location within the slot. The portion 62 of the section is provided with a pair of dovetailed slots Si and Sii and a ridge iorrns a dovetailed slot li. en anchoring element 25 engages the dovetailed slot 'il to anchor the sill in position in the building opening. A similar anchoring element 25 ma;1 also be utilized for engaging in the dovetailed slot 53 for anchoring the sill to the building structure. The inner header and sill section 2'! is applied to the flange of the sill oar through the engagement of the dovetail 2t in the dovetaileol slot 5l'. The bottom portion or" the inner header and sill section El is employed only across the ixed window assembly ifi at the sill and the end of the section mates in a notch where it abuts the jamb section i2. A pair of screws extends through the .apertures 15st 1in the upwardly directed portieri If': of the .section `and threaded into lapertures .El in ythe web :42 lof the iamb of the section I2 .for securing the sill Asection to the :a-mb section at the corner to which the sill section `2 "I extends.

`The opposite vend of the `section '2l at the corner of the sill .abuts against a frame meeting rail i2 (Figures 4 and 79, the lower end of which has a laterally extending iiange "L3 ont away to 4provide a notch for receiving the end of the section 21. As illustrated in Fig. 3, similar screws are utilized for extending through apertures .in the upwardly extending portion 6.2 .on the :sill :section :H and secured inthreaded apertures Yon the inner face of the frame meeting vrail '12. Spaced webs le .of the section 'I2 have outwardly directedspaced slots 'I5 and TIB in .alignment Ywith the . slots 33 and 34 in the .inner header and sill :section 21 and with slots di and 115 in `the jamb section I2. The section 'I2 .abuts against the web :I 7 of the header section lil and is secured Yin position byscrews extending through apertures 4in portion I8 vinto .threaded apertures provided inthe inner web 'FI ofthe section. A'large dovetailed groove 'E8 is provided in :the face of the web 'I7 for receiving a weatherstrip i9 which .is retained in `position thereby. Certain of lthe channel sections A3d ofthe jamb section .I2 may be provided ywith dovetailed grooves 4B 'for receiving -a weatherstrip i9 which is retained vin position thereby to abut-the weatherstripili when the movable sash .is 'in closed position.

The ends of the frame jamb section I2 which engage the sill 'section II vat the point vadje-.cent vto the area of the sliding window when closed, at which the .sill section -27 is not utilized, are secured together by screws extending through apertures 56 in the upwardly extending portion 62 into the threaded apertures c35'! in the web Vdi. of the jamb section. "It will be noted in this arrangement that the notch 55 is omitted vbecause of the absence ofthe sill section 27 at this point.

The sliding window l5 (Figures 4 and f90 has a vsliding sash 8i which embodies two like stiles 32,

a top rail S3 and a bottom rail A34. The stiles are of tubular vforni having outer side faces 185, inner webs 86, a glass supporting web :87 .and an Iouter web 8%. The glass supporting web 81 is provided with inwardly directed slots Bil and Ell which are spaced from each other, while the --web 88 has an extending iiange 92 which projects beyond :the web '8l'. The outer Asurface of the web B8 is provided with .a dovetailed groove 93 for supporting and securely holding :a 'sealin`- strip gli. The top rail B3 of 'the movable sash has a .central web se with upwardly :directed 'flanges 19E at each end, the 4outer surface of 'which `is provided with projections containing zdovetailed grooves Sl :for receiving the weatherstrip 94. A downwardly projecting iiange 93 Eis :provided in alignment with the frange 5S on the front face of the toprail.

`The bottom rail ad .comprises a central web .Se

having downwardly .projecting wall portions lill containing slots 'm2 'for reducing `the weight of the section. ken :upwardly ,extending .harige les is provided atv the front of the'bottom rail'aligned with the nan-ge 98 of the top :rail B3 and 92 of 4the stiles 82. The nange 192 is cut .away on the sash stiles 82 vto provide .notches 2.55 for receiving the ends of the tcp rail ,and-bottom rail to which they are secured by screws LM extending through apertures lee in the web S5 ofthe stile and threaded into apertures It@ in 'the webs :9.5

land `99 :of the rails 83 and Se, respectively. In this manner the sash is securely held together .at vthe four corners.

Rollers L01 have their .stub vshafts ies extending through .apertures in the webs .85 and ,Se so as to be in alignment with the :track 6s of the sill section l I. 'The screws .IM are disposed on eachside 4ottico roller to assist in maintaining the roller in .alignment with the track. The shafts let are peenedin the aperture and the roller freely turns Ion the shaft. A roller is vmounted in the lower end :of l.each of .the stiles t2 ,of the sash so that both ends ride upon the track Se.

A window .pane lil is mounted .against :the flange i3 of the frame meeting rail i2, ie flange 35 :on :the inner header and sill section il' and the .iiallge ,on the jamb section l2. The anges abovexnamed are coplanar and directly receive the glass. lThe .glass is forced against putty .or other :sealing lmaterial placed on the anges. Four glazing strips I I2 form a coplanar retaining flange around the opening when `inserted in the aligned :slots in the inner header and sill section, in the frame ymeeting rail lli and in the jarnb section I2. Thereafter, four spring elements H3 are slipped in between the glass iii and the strips VH2 to urge the glass outwardly against the coplanar flanges. .Spring tension in the strips retains the strips and glass in position. r`ihe window glass IIi is applied in the saine manner to the window sash l5, the pane first being placed against the 'flange s2 of the stiles and anges 88 and AI'Il3 .on the top and bottom rails et and tid. Thereafter, glazing strips H2 are placed in one set of slots to be lcoplanar with the flanges above mentioned against which the glass is placed, after .which four of the spring lstrips Iii-i :are added Lbetween the flanges I lf2 land the window glass IM to .hold the glass in position.

Whenfit isdesired to join two windows together, they are assembled `in the saine Ina-nner, with the :exception that a frame mullio'n jarnb H5 {Figure 4l) `'replaces the standard frame jarnb I2 in lone of theswindows. This Vrnullion jarnb has a channel `section Ils having an outer web `I i7 and an inner web H8 joined by a 'base web i9 containing spaced slots lil. The web lll at the end has an inwardly extending flange 22 and also l'an offset projecting flange |23. The web II8 has a web l2@ extending from the end inwardly `at right angles therefrom, which has on its inner end an enlarged portion 25 provided with a slot '26 'for `receiving -a strip it which overlaps the web '31 of the irarne jarn'b section I2, The flanges I2 2 and 23 mate with the flange 14S-and web 4:6 ofthe frarne jarnb section I2 and `prevent the section f! te gfroni moving inwardly, while ithe :engagement of `the portion i2? or" the Aenlarged portion IE5 of the mullion section I3 prevents :the section from moving outwardly. n leaf `spring 'H8 'is disposed between the web Il and the flange V33 on the section iii to urge the webs 124 and t1 away from each other but permitting vthem to move toward each other in oase the "metal of the frames expands. When the metal contracts, the spring maintains the engagejrnent of the web 3l with the strip I i2.

`v5/'hilt it is within fthe purview of this invention .to use window panes which extend from the top to the bottom of the frame and sash, muntins .can Ybe employed therebetween for using .glass 4panes of `shorter .li-eight. A section of vthe 'muntin is illustrated in e wherein muntin .is the shape-oi an H hav-ing a central web `Isc and 2 two parallel webs |3| disposed at right angles thereto and in T relation therewith. This provides an upwardly and downwardly presented channel on either side of the web |30 for the reception of the bottom of the top pane of glass and the top of the bottom pane of glass. It will be noted that on the outside of the window the iange |3| is out away at the end at |32 for overlapping the projecting flange 92 on the sash stile S5. The muntin is secured in position by a screw projecting through the flanges 92 into the web |39, the heads of the screws being visible on the outside of the frame, as illustrated in Fig. 1. Similarly, the muntin is secured to the jamb l2 and the frame meeting rail l2 by having the cutaway end portions |32 overlap the flange 54 on the jamb i2 and the Iiange 'i3 on the frame meeting rail l2. Screws extend through the fianges S and 13 into the Web i3@ for securing the muntin to the window frame for supporting e the xed window panes.

It will be noted when examining the window frame structure and the movable sash structure that the adjacent faces which support the window panes and lli?. have an additional set of slots 89, 1S, ete. parallel to but spaced from the slots in which the glazing strips l2 are employed for securing the panes in the frame, as illustrated. If Thermopane glass is to be employed embodying a pair of spaced window panes, these are mounted in the window opening and cover the slots now employed for holding a single pane. The supporting glazing strips are applied to the innermost set of slots and putty alone is employed for holding the Thermopane glass in position.

It is also within the purview of the present invention to apply a pane of glass against the strips |2 and employ another set of glazing strips H2 in the innermost slots and utilize additional glazing springsl l 3 for retaining the second glass against the glazing strips |52 to provide double thicknesses of glass in the openings. The window glass could be of the removable type having a frame (Figure 4l) which can be set in the .7,

opening against the strips l I2 and retained in position through the application of another set of strips l i2 in the innermost slots. ln the summer months these latter strips and window may be removed and stored.

It will be noted that the storm or frame window may be applied directly to the outside anges 54 and 'J3 of the frame in the window opening as the distance between the flange 'i3 and slot 'i5 of the frame meeting rail 12 is exactly the same as the distance between the face of the strip ||2 and the slot t9 of the window sash stile. This is also true of the distance between the face of the strip |12 and the slot 45 of the frame jamb section I2. The same treatment may be applied to the lined window, to the movable sash, and also to the window opening through the frame.

Various means may be employed for locking the window sash in open and closed positions. For the purpose of illustration, a pin |34 is shown having a handle |35 on one end and provided with a tubular sleeve therearound containing a spring which permits the handle to withdraw the plunger end |35 from an aperture in the frame meeting rail la when the window is in closed position.

When a storm window is placed in the frame, a sill ventilator is preferably employed, as illustrated in Fig. l0, having an outer ange 38. A step |39 is provided at the top for receiving the upwardly presenting track, Jaz-:cb scc bottom of the storm window, the storm window being held in position at the sides and top. An inwardly extending flange from the step has a downwardly projecting web lili terminating in an inwardly directed flange |1272 and a vertical web |53 which extends on each side of the flange M2. Similarly, a downwardly extending flange N4 is provided coplanar with the flange |43. Suitable apertures are provided in the outer flange |38 and web illI, the latter being covered by a slide |45 which may be shifted laterally by the handle |48 to uncover one or a plurality of the apertures as may be desired. By the use of this ventilator, the window pane employed in the fixed window openings may also be employed in the opening of the movable sash since the step |35 is aligned with the base web 32 of the inner sill section 21. It is to be understood that in place of the storm window a screen may be mounted in the same manner within the opening of the movable sash.

It will be noted from Fig. 2 that a space |47 is provided above the movable sash between the header section which permits the movable sash to be lifted upwardly and to have the bottom of the sash clear the track 64, as illustrated in Fig. 3, so that the sash may be pulled inwardly from the bottom and thereby removed. Similarly, the sash may be first inserted in the top, lifted upwardly and pushed in at the bottom to again apply the sash to the track Sli. A sealing strip M8 is provided in a slot |49 which encompasses the track S4 for sealing the sash bottom rail thereabout.

Referring to Fig. 4, it will be noted that the jarnb anchor 5| is reversible so that the web 53 thereof may be disposed inwardly of the frame, as viewed in the figure, or outwardly thereof, as illustrated in dot and dash line. in the position illustrated in unbroken line, the anchor is emploved with a brick veneer type of construction, while in frame types of buildings the web 53 of the anchor is usually in the position illustrated in broken line. Similarly, the head or sill anchors 25 may be employed at any point along the frame and in various spacedA positions relative to each other as the need may require,

Referring again to Fig. l, it will be noted that the left-hand and right-hand windows which go to make up the pair of windows joined by the mullion have the movable sash reversed, that is to say, the sash is on the left-hand side of the left-hand window and on the right-hand side of the right-hand window of the pair as viewed in the gure from the outside of the building. It should be understood that the movable sash |5 may be disposed on the left-hand or right-hand side of both of the windows, or both of the sashes could be placed adjacent to each other, the construction of the present window readily lending itself to such adaptation.

What is claimed is:

l. The combination with a window *frame having a head section cont ,ining a downward- .ly presenting channel, a sill section l'savi c "n joining said sill and head sections to complete the frame, a meeting rail joining said head sill sections of the frame intermediate the iemb sections thereof a horizontally slidable se said frame having a top -rail projectable w hin said channel of the head section of the frame, a bottom rail for the sash having a channel in the bottom thereof for receiving said 1 track. Stiles joining said top and bottom rails to complete the sash structure, vertical sealing. strips on the inner face of one oi the jamb sections and the meeting rail of said'. frame, and vertical sealing strips on the outer faces 01" the Stiles of the sash so located as to be in abutting cia tion with the vertical sealing strips oi the traine' when the sash is in closed position.

2. The combination with a window franse having a head section containing a` downwardly presenting channel, a sill section having an npwardly presenting track,- and jamb sections joining said sill and head sections to complete the frame, a meeting rail joining saidhead and sill sections oi the frame intermedi .te the lamb sections thereof a horizontally7 slidable sash for said frame having a top rail projectable within said channel ofthe head section' of the trarne.. a bottom rail for the sash having a channel. in the bottom thereof for receiving said track, stil'es joining said top and bottom rails to completeV the sash structure, vertical sealing strips on one' of the jarnb sections and on the meeting rail' of said frame and verticalsealingV strips on` each. of the stiles of the sash, said vertical sealing strips being so located with respect to the vertical sealing strips on said frame to be in weathersealing relationship therewith when said sash is in its closed position.

3. The combination with a window frame having a head section containing a downwardly presenting channel, a, sill section having an npwardly presenting track, and jamb sections joining said sill and head sections to complete the frame, a meeting rail joining' said head and sill sections of the frame intermediate the jamb sections thereof a horizontally slide-ble sash: for' said frame having a top rail pro'jectable within said channel or" the head section of the frame, a bottom rail for the sash having a channel in the bottom thereof for receiving said track, sti-les joining said top and bottom rails to complete the sash structure, said head and sill sections of said frame being spaced apart a distance sufficiently greater than the spacing of the top and bottom rails of the sash that said sash can move upwardly into channel a distance suincient to permit it to be lifted ofi said track; vertical sealing strips on one of the jamb sections and on the meeting rail of said frame and vertical sealing strips on the Stiles of the sash, said vertical sealing strips being so located with respect to the vertical sealing strips on said frame as to be in weather sealing relationship therewith when said sash is in its closed position.

4. The combination described in claim 3 including also a projection extending downwardly from the web of said downwardly presenting channel for preventing upward movement of said sash when said sash is in at least a partially closed position.

5. A structure dened in claim 3 including also a xed sash within said frame positioned out of the path of travel of said sliding sash and mounted between said frame head section and said frame sill section and between said meeting rail and one oi said ira-me jamb sections.

6. The combination defined in claim 2 wherein a stile of said slidable sash at least partially overlays, and is closedly engageable with said meeting rail when said slidable sash is in closed position.

7. The combination with a window frame having a head section containing a downward- 1y presenting channel near one edge thereof, a sill section having an upwardly presenting said downwardly presenting 10 track near one edge thereof; and threel jamb sectionsv joining said. sill and hea-d section. to complete the frame and denne two adjacent openings. offset from said; track and channel, said. frame head, sill and jainb sections being adapted to retain a xed: window panel in one of said openings and to, removably retain a hired screenr panel. fio-planar with said window panel in. the other of' said. openings; a window panel in. said one ci slidable sash for said frame having Aa top rail projectible within said channel oi" theA head section` of the frame, a bottom rail for the sash having a channel in the bottom thereof for reoeiving said. track, Stiles joining said' top and bottom rails to complete the sash structure said; hcrizontaliy slidable sashv being froml a position in substantial register with said one of said openings to a position in substantial register with said other of said openings; verti-v call weather sealing means' en an adjacent two of said jarnb` sectionsand. vertical sealing means on the stiles of said sash, said last-named vertical sealing means beingv so located with respectto the verticalfsealing means on said frame as to be in. weather sealing. relationship therewith when said sash is in its closed position..

8.. The combination. with a Window frame having a head. section containing a downwardl-y presenting channel. near. one edge. there of, a sill"` section. having an. upwardly presenty ingv track near one edgethereoi", and three jamb sections joining said sill and head section. to complete the traine and denne two adjacent openings offset from said. track and channel, said frame head, sill and jan-ib sections being adapted to removably retain a window panel in one oi said openings and. to removably retain` a nxed screen co-planar with said window panel in the other of said openings; window panel in said one of said openings; a horizontal'- ly slidable sash for said frame having a top rali projectible within said channel oi the head section of the frame, a bottom rail for the sash having a channel in the bottom thereof for receiving said track, stiles joining said topr and bottom rails tocomplete the sash structure, said horizontally slidable sash being movable from a position in substantial register with said window panel to a position in substantial register' with the said other of said openings, vertical weather sealing means on an adjacent two or said jamb sections and vertical sealing means on the stiles or said sash, said lastunamed vertical sealing means being so located with respect to the vertical sealing means on said frame as to be in weather sealing relationship therewith when said sash is in its closed position, said sash being also in weather sealing relationship with said channel and with said track whereby when said sash is in substantial register with the portion of the frame surrounding said screen panel,

it Will be in weather sealing relationship with said frame around its entire periphery.

9. The combination with a window frame havmg a head section containing a downwardly presenting channel near one edge thereof, a sill having an upwardly presenting track near one edge thereof, and three jamb sections joining said sill and head section to complete the frame and denne two adjacent openings oiiset from said track and channel, said frame head, sill and jamb a xed window panel in one of said openings and to removably retain a fixed screen panel said openings; a horizontally' movable 11 coeplanar with said window `panel in the other' of said openings; a Window panel in said one of said openings; a horizontally slidable sash for said frame having a top rail projectible within said channel of the head section of the frame, a bottom rail for the sash having a channel in the bottom thereof for receiving said track, stiles joining said top and bottom rails to complete the sash structure, said horizontally slidable sash being movable from a position in substantial register with said one of said openings to a position in substantial register with said other of said openings, vertical sealing strips on one of the jamb sections and on the meeting rail of said frame and vertical sealing strips on the stiles of the sash, said vertical sealing strips being so located with respect to the vertical sealing strips on said frame as to be in Weather sealing relationship therewith when said sash is in register with said one of said openings.

10. A combination with a window frame having a head section containing a downwardly presenting channel near one edge thereof, a sill section having an upwardli7 presenting track near one edge thereof and three janib sections joining said sill section and head section to cornplete the frame and define two 'adjacent coplanar openings offset from said track and channel, said frame head, sill and jainb sections being adapted to retain a iixed window panel in one of said openings and to retain a xed screen panel in the other or" said openings; a horizontally slidable sash for said frame having a top rail projectible Within said channel of the head section of the frame, a bottom rail for the sash having a channel in the bottom thereof for receiving said track, Stiles joining said top and bottom rails to complete the sash structure, said horizontally slidable sash being movable from a position in substantial register 12 with said one of said openings to a position in substantial register with said other of said openings, vertical Weather sealing means on an adjacent two of said jamb sections and vertical sealing means on the stiles of said sash, said last-named vertical sealing means being so located with respect to the vertical sealing means on said frame as to be in weather sealing relationship therewith when said sash is in its closed position.

GERALD D. PETERSON.

References Cited in the rile of this patent UNITED STATES PATENTS Number Name Date 981,486 Shaner` Jan. l0, 1911 1,040,572 Otterson Oct. 8, 1912 1,519,087 Polachek Dec. 9, 1924 1,569,602 Anderson Jan. 12, 1926 1,596,450 Rappaport Aug. 17, 1926 1,763,489 Turner June l0, 1930 1,789,970 Dreher Jan. 27, 1931 1,805,538 Anderberg May 19, 1931 1,854,633 Stephens Apr. 19, 1932 1,869,274 Phillips July 26, 1932 1,922,286 Gronbech Aug. 15, 1933 1,955,124 Hamm Apr. 17, 1934 1,999,208 Peremi et al. Apr. 30, 1935 2,060,525 Perenii et al Nov. 10, 1933 2,107,773 Axe Feb. 8, 1938 2,181,099 Edwards Sept. 27, 1938 2,135,680 Sharp Nov. 8, 1938 2,144,782 Swanson Jan. 24, 1939 2,153,218 Verhagen Apr. 4, 1939 2,270,348 Rurnney Jan. 20, 1942 2,283,009 Levan May 12, 1942 FOREGN PATENTS Number Country Date 391,633 Great Britain May 4, 1933

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