US2608277A

US2608277A - Metal window construction

Info

Publication number: US2608277A
Application number: US707372A
Authority: US
Inventors: Storms Albert
Original assignee: Individual
Current assignee: Individual
Priority date: 1946-11-02
Filing date: 1946-11-02
Publication date: 1952-08-26
Anticipated expiration: 1969-08-26

Description

4 Sheets-Sheet 1 A. STORMS METAL WINDOW CONSTRUCTION Aug. 26, 1952 Filed Nov. 2, 1946 7.. 5 2 x m w??? & m m 6 i M m w m H N i m 9 z o 8 w M L \l A. W W I w rm MUN mw \2 a 49,4, w A 2 i 4. ,U 2 l 5 2 w. |+l w 6 P 5 H I: 2 4

Aug. 26, 1952 A. STORMS METAL WINDOW CONSTRUCTION 4 Sheets-Sheet 2 INVENTOR ALBERT STORMS Filed IIIOV. 2, 1946 A TTOPNE VS S 5 V 7 5 W w. 7 5 mo m 2 t N T 7 W o mu ES f T 8 h E V 0 S A T A .v 4. m mp m c m L S 3 W A e 4 qu w L M A STORMS METAL WINDOW CONSTRUCTION III I'll Aug. 26, 1952 Flled Nov 2, 1946 A. S TORMS METAL WINDOW CONSTRUCTION Aug. 26, 1952 4 Sheets-Sheet 4 Filed Nov. 2, 1946 INVENTOR.

ALBERT STORMS ATTORNEYS Patented Aug. 26, 1952 UNITED STATES PATENT OFFICE METAL WINDOW CONSTRUCTION Albert Storms, Elmhurst, N. Y.

Application November 2, 1946, Serial No. 707,372

This invention relates to improvements in metal window construction and has for an object the provision of a metal window of novel construction and including weather stripping means which function both as a means for establishing an airtight connection between the frame and the movable sashes, and obviates the necessity for having weights, cords, chains, etc., to counter-balance the weight of the sashes per se.

A further object of the invention is the'provision in a metal window construction of slotted means formed in the vertical edges of the sash members, a weather stripping member supported in said slotted means and having edges cooperating with corresponding vertical V slots formed in the frame of said window and thereby providing two barriers against the passage of air fromthe outside to the inside, or vice versa.

Another object of the invention is the provision of novel means on the sash members of metal windows for sealing against the weather along the meeting rails.

A further object of the invention is the provision in metal windows of horizontal means in the movable sash thereof for contacting the sill of the frame of said window for establishing a seal therewith when the sash is in its closed position.

Another object of the invention is the provision in a metal window construction of means for establishing a seal between the upper horizontal rail of the upper sash and the head of the frame.

Yet another object of the invention is the provision in metal window construction of a novel check block.

Other objects and advantages of the invention will be apparent to those skilled in the art upon a study of the following specification, and the accompanying drawings.

Referring to the drawings which are given by way of example to illustrate the invention:

Figure 1 is an elevation of a window embodying features of the invention; a

Figure 2 is a sectional view in perspective taken along the line 22 of Figure l, and showing my new and improved weather stripping and other details of construction of both the frame and the lower sash;

Figure 2a is an enlarged detail showing the rclation of the ends of the weather strip with the V-shaped grooves in the frame;

Figure 3 is a view of the lower corner of one of the sashes showing the tail of the weather stripping frictionally engaging the frame;

Figure 3a is a detailed view showing the tail piece of the weather strip formed separately and 2 Claims. ,(Cl. 189-42) subsequently spot weldedto the weather strip instead of being made integral with the weather strip;

Figure 4 is a sectional plan view taken along the lines 4-4 of Figure 1;

Figure 5 is a vertical sectional elevation taken along the lines '55 of Figure 1 and showing details of the weather seals with the sill at the meeting rails and at the head of the frame;

Figure 6 tea sectional view showing a modified form of weather seal at the meeting rails of the sashes;

Figure '7 shows afurther modification of the weather seal at the meeting rails;

Figure '8 is a sectional elevation showing a modified form of seal between the bottom rail of the sash and the sill of the window frame;

Figure 9 is a sectional plan view showing my new and improved check block and its relation to the sash frames; and

Figure 10 is a sectional elevation of the check block taken along the linesv 18-40 of Figure 9.

Referring first to- Figure 1, a double metallic window isshown having jambs i5 and It, a head [1, "a sill i8, and amullion [9. Within the frame are upper sashes 2B and 2|, and

lower sashes

22 and 23. i

In Figure 2, which is'a perspective view taken along the lines 2--2 of Figure 1,, the jamb i6 is preferably formed of one piece of material and it has formed integral therewith a channel '24 bounded by sides 25, 2'5, and 21', which cooperate to form a parting strip. The side 26 has a portion 28 which overhangs the side 25' and has an angular face 29 which meets the outer face of the side 25. The side 26 also has an overhanging portion 30 which includes an angular surface 3| which meets the outer surface of the side 21.

Spaced apart-from the side 2'! of the parting strip is a web 32 which has an inner surface 33 which together with the surface 36 of the jamb and the inner surface of the side El, forms a vertical channel the purpose of which will presently be described. The web 32 has a portion 35 which overhangs said channel and has an angular surface 31 which meets the surface 33.

The sash 23 has a stile 45, the cross section of which somewhat resembles an h having

parallel legs

38 and 39, a horizontal portion 40, and a vertical portion 4| which is an extension of the leg 38. The leg 38 has formed integral therewith .a portion 42 which extends toward a like portion G3 formed integral with the leg 39. Formed within the surface of the portion 42 facing the portion 43, is a longitudinal V-shaped groove 44, and formed within the portion 43,

facing the portion d2, is a like V-shaped groove 45.

The stile 36 has a vertical web- 41 generally V- shaped in cross section which forms an extension of the side 39. The portion t! has an overhanging portion 38 which is also of V cross section and extends toward the front of the stile 45. The edge of this portion forms a support for the glass pane 29. Some glazing compound is placed in the channel bounded by the

portions

48, 4!, and 40. The glass is then positioned in the frame and pressed to bring it in contact with the sharp edge of the portion 48 following which glazing compound may be added to fill the remainder of the channel (bounded by the portions 40 and 41), and finished oil to terminate along a line 50.

A rail 5! of the sash 23 will be presently described in connection with Figure 5.

A weather strip, generally designated by the numeral 52, includes a straight web portion 53. Formed integral therewith is a curvilinear portion 54 the inner end of which is curved at 55 and terminates in a straight portion 5-5 which at the point where it joins the web 53 is of V cross section and which forms a sliding fit in the groove 45. The outer extension 51 of the curvilinear portion 54 is in frictional contact with the surface 35 and has its edge spaced apart from the angular surface 3 l. The weather strip also includes a second curvilinear portion 53 which includes a curved portion 59 joining the web 53 to form a V cross section Gil which slidably fits the groove M. The outer extension 6! of the curvilinear portion 58 is in frictional contact with the surface 33 and has its edge spaced apart from the V formed by the surface 33 and the angular surface 3'1.

The lower end of the weather strip 52 has a tail '62 which is formed of an extension of the bottom end of the web 53 which is curved at 63 along a comparatively short curve and which is curved at 64 along a curve the radius of which is substantially longer. The tail 62 frictionally engages the surface 34 of the jamb it between the parting strip and the jamb web 32. The weather strip is pushed into the grooves 44 and 45 and extends substantially the entire length of the stile 46; therefore, when its complete length has been positioned in the grooves 44 and 45 the portion of the sash does not tend to dislocate it.

In Figure 2c the outer extension of the curvilinear portion 54 is shown in enlarged detail to depict its relation to the V formed by the surface 35 and the angular surface 3|. It will be noted that the edge of the extension 54 is rounded and actually has two lines of contact with the legs of the V.

The frictional engagement of the rounded edges of the portions 54 and BI with the surfaces of the Vs, effectively form double barriers to the passage of air from the exterior to the interior of a room in which the window is installed. This frictional engagement augmented by the frictional engagement of the tail G2 with the surface 34 of the lamb, eliminates the necessity for supporting the sash b means of springs, weights, ropes, chains, etc. Due to the resilient urge imparted to the

surfaces

33, 3?, and 3|, 35 by the curved'p'ortions 58 and 5:3 respectively, I find that the force necessary to lower or raise the sash is very low and the action is velvety. Also there is no tendency for the sash'to slip-downwardly due to the vibration produced by heavy traffic along streets adjacent to. buildings'containing my new and improved window construction.

Although the tail 62 is shown in Figures 2 and 3 as formed integral with the Weather strip, this tail may be formed separately, for example, see 62a in Figure 3a, where it will be noted that the tail 82a is spot welded or otherwise secured to the Weather strip 52a.

Referring to Figure 4, it will be seen that a web 65 is formed integral with the wall 25 of the parting strip and is preferably in alignment with the web [5. The web 65 extends forwardly to join a web 66 which is similar to the web 32.

The web 86 has an inner surface 68 which, together with the inner surface 61 of the side 25 of the parting strip, forms a vertical channel for the upper sash (not shown). The web 66 has a portion 69 which overhang the channel and has an angular surface it which meets the surface 58. The upper sash is adapted to carry a weather strip like the weather strip 52 and the outer extension thereof, corresponding to the outer extension '51, has its edge beveled and in contact with the angular surface 16. Also the other outer extension of said weather strip, corresponding to the outer extension 6 I, has its edge beveled and in contact with the angular surface 29.

A' web H, as seen in Figure 4, is integralwith the webs It and 32 and is in alignment with the web 32 and this web has an angular end 12 which is spaced apart from and parallel to the web l6.

Formedintegral with the webs 65 and B6 and in alignment with the web 66, is a web 13 the outer end it of which is angular, spaced apart from and parallel to the web 65. The angular portions 12 and M are also preferably in align ment with and extend toward each other.

A web 15 formed integral with the webs I6, 32, and I l, is substantially in alignment with the web H3, and a web l6 is formed integral with the web 68 and is positioned outside the channel between the end carrying the overhanging portion '69 and the point where the webs (i5 and 66 join.

The shape of the integral metallic section above described, and having channels for the upper and lower sash with a parting strip therebetween is designated as shape A. The section or shape in Figure 4 engaged by the stile 36a, of the lower sash 23 is identical with shape A except that in constructing the window frame this section is turned end for end and, therefore, the two side sections are rights and lefts, so the same numerals appear on the left section except that they are followed by the letter a. The left hand section is backed up by a second right hand section designated shape 2A, and they cooperate to form a mullion. Shape 2A is similar to shape A in most respects therefore in Figure 4 all portions of shape 2A, which are identical with the corresponding portions in shape A, are designated by the same numeral followed by the letter b, and these portions of shape 2A which are not on shape A, are designated by higher numerals.

In shape 2A the webs H, 12, 13, and 14, are omitted so that the web 55b may member up with or contact with the web 74a. Formed integral with the web 65b and extending at right angles to the surface thereof, is a web 13 which is closely adjacent to the end of the web I ia, within the mullion. The web 12a. contacts the web I612 and integral with the web 16b and extending at right angles to the surface thereof is a web 19 which is closely adjacent to the web 1211 laterally, and closely adjacent to the web We longitudinally.

The stile 46a is identical with the stile 39 except that it is the same section turned end for end. It is provided with longitudinal grooves 44a and 45a which accommodate a weather strip 5211, the portion 51a of which engages the beveled surallel to the axis'of the bottom rail '51 and formed rail '5I. i feathering webs-84 and 85.

face 31a and the portion Glwwhich engages the bevel ila, thereby effecting a doubleseal between the exterior and the interior. The tail 62a of this weather stripfrictionally engages the surface 34a. of the jamb 16a between the parting strip *andthe-web'32o.

Extending upwardly from the. bottom rail .5 I,

and parallel to the

stiles

48 and 46a, is amuntin The muntin H has a web 80 which isparintegral-with the web -80 are shortwebs BI and 82 which extend at right angles to the axis of the bottom rail and which terminate on a plane substantially parallel to the inner face 5Ia of the bottom rail 5|. Joining the web 80 intermediate the ends thereof andextending at right angles therefrom is a web 83 which terminates on aplane'parallel to-the face 5 Ia of the bottom Formed integral with the web 83 are with a layer of glazing compound 86 therebetween is located against the web portion 80 of the muntin and additional glazing compound 81, the

outer surface ofwhich is preferably continuous with the outersurface of the featheringweb 84,

secures the pane 43 to the muntin TI. Likewise a pane of glass 88 is located by the overhanging portion 48a. of the stile 46a. Glazing compound is placed in the channel bounded by portions 48a, M a, and a and finished off to terminate alon a line a. Between the glass 88 and the web 86 of the Inuntin is a layer 86a of glazing compound and this is joined byglazing compound'flla the outer surface of which is preferably continuous with the outer surface of the feathering web 85. Likewise the

panes

49 and 88 are securedto the cooperate with the shape 2A of the mullion.

Referring to Figure 5, which is a vertical sectional elevation taken along the lines 5-5 of Figure 1, the weather stripping at the sill, at the head, and at the meeting rails, is shown.

The jamb is identical with the left jamb shown in Figure 4 and designated as shapeA, and it bearsnumerals indicating the same elements as shown in Figure 4 excepting that they are each followed by the letter 0. The upper end of the jamb I5 is joined to the head I1 and the lower end is joined to the sill I8. Likewise, referring momentarily to Figure l, the jamb I5 is likewise joined to the head and the sill and intermediate thereof the mullion maybe joined to the head and to the sill. The head (Figure 5) has a horizontal web 91 and integral therewith on one end thereof is a web 92 extending upwardly.

The web 92 may have formed integral therewith a web 93 which is parallel toand spaced apart from the web 9 I. The web 9I near the left side thereoflas seen in Figure 5, has a portion 96 deformed upwardly and this deformed portion embraces a longitudinal cavity 94 to accommodate a weather strip 95, to be presently described. Beyond the portion 96 isa web 97 the lower surface of which is. in alignment with the lower sur- The glass pane 49 having. an outwardly extending. portion face of thewebiillrand this web: joinsavertical web 98 which has an offset depending portionflil. -The. top rail I00 of the :uppersash 20 includesan upperhorizontal web IOI which has longitudinal V-shaped-notches"IIl2 and H13 formed therein. The topgrail I Ilfltalso 'includes'webs I04 and I05 which:.accommodate"the body I06 for securing the-pane IIJI therein; .Thegweather strip is somewhat heart-shaped in ".crossasection and the lower edges a. and :95?) engagethe right and the left edges respectively ofthe V.-shaped'notches I02 and I03,;and clear-the bottoms of saidcnotches, providing two barriers against air :passing between the top of the top@ rail I00.and the lower surfacesiof the :webs9'I- and .91. The lower or meeting rail I08 -of-theupper sash2ll consists in the .mainof a rectangular web I09 having formed integral therewith webs Band I I I for-accommodating thexbody I I2'forsecuring the pane I01 thereto. Formeidiintegral withthe bottom web I09 is a web II3 which-extends toward the upper meeting rail H4 of: the .lowersa'sh 22 and terminates along :a'beveledline I5. Formed integral with thevertical :wall IIl'Qa of the rectangular web I09 :is=a'curvilinear web I'IB which has a longitudinal channel 'I I! 'of generally heart-shaped cross section formed therein. Positioned within this cavity lf'lis a weather strip II 8 which may be identical with nthe weather strip 95 describe above.

The upper ormeetingrail I I4 of thelowersash 22rincludes a web IIIlof'rectangular cross-section ifl'HdLltha-S integral therewith depending webs I20: sand-I21 which are adapted to accommodate a "body I22 for securing the pane I23 thereto. Formedvi-ntegral'with :the rectangular W'eb IIS and preferablyformed integral with and in alignment with the lowerportion I Isa thereof is a web l-24-the .end "of-which isv beveled and the beveled surface-contacts the beveledrsurface II5 of the "web I I3 when-the upper sash is all ofrt'he way up eandithe lowersash' is allof the way down.

-.Preferably formed integral with and in alignment ".withrthezupper web H9!) is a web I25, the right zend I26 of which has parallel spaced .Veshaped grooves I2? and [28 formed therein. LThefree edges :ofthe weather strip I I8 engage :oppositeangular surfaces of the grooves I21 and I2 8xwhen the upperand lower sashes are closed thus the weather strip I I8 establishes two lines of'contact against air passing between the lower meeting rail of the upper sash and the upper meeting rail of" the lower sash. 1

The. sill l8 has a web I29 which is inclined to the horizontal so that water falling thereon will 'draintoward the outside. Preferably formed integral with the web I29 is a vertical web ,I3Il the upperfaceof which carries a horizontal-web I 3I which may be shaped as shown or which may have any other desired shape. Formed integral with the webs I29 and I30, and preferably in .alignmentwith-and forminga continuation of the web Iiiil, isqa dependingweb I32. Formed integral-with the. other end of the web I23 is a vertical-[portion l33 which joins anL-shaped web I34 and a :depending portion 13.5. i

:"fhe' loweru'ail of the lower "saslr22 includes a :igenera'lly rectangular web I36 having vertical portions 436a. and I35b, an upper horizontal portionl3tc and a horizontal lower portion I36d. Preferably-continuous with the Webs I36b' and. a "respectively are webs I31 and I38 which 'accommodatea body I39 for securing the pane I23' thereto. I.

Formed integral with the web I31 is a horizontal'web I40 the extreme end I4I of which may be shaped as shown or may be of any other desired shape. Preferably formed integral with and'depending from the portions I362) and I3'6a are webs I42 and I43, and between the webs I42 and I43 is formed a cavity: I44 having angular end surfaces I45 and I46 which are adapted to support the weather stripv I41; therein. The

channel I44 also has an angular surface I46 which cooperates with the lower portion of the weather strip I41. When the lower sash is closed by bringing the lower surface of the bottom rail 22 in contact with the sill I8, the lower leg of the weather strip I41 is deformed upwardly by contact with the sill and since the tail of this lower portion is in engagement with the angular surface I48 the surface I48 acts as a cam and causes the tail of the lower portion of the weather strip I41 to cam against the tail on the upper portion of the weather strip I41 and thereby a tight seal is effected by the weather strip I41 between the sill I8 and the lower rail 22 of the lower sash.

' Since the weather strip I41 is in the form of a channel the cavity I44'is not open to receive dirt, dust, spiders, insects, etc

' In the modification of the meeting rail weather strip shown in Figure 6, the lower rail I68 of the upper sash is substantially identical and is, therefore,: given the same numerals as those shown thereon in Figure 5. The cavity H1 in Figure 6 contains a weather strip I49 which has curved sides I59'and II andformed integral with these .curved sides are angular portions I52 and I53 respectively, the free edges of these angular portions terminating adjacent to one another.

The shape of the upper or meeting rail of the lower sash is substantially identical with the upper or meeting rail of the lower sash shown in Figure 5 except the means engaging the weather strip; consequently the webs which are'alike are given the same numerals as shown in Figure 5; and. their description need not here be repeated. Coextensive with the Web I I91) is a web I54 the left end I54ct' of which is thickened vertically.

A V-shaped groove I55 formed in the thickened portion divides the latter into two V-shaped tongues I56 and I51. As may be seen in Figure 6 when the two sashes are closed, the tongues. I56

and I51 respectively engage, contact, and deform ,downwardly the portions I52 and I53 of the weather strip and thereby form two barriers against air passing therethrough.

In the modification shown in Figure '1, the web I09ahas a boss portion I58 the surface I59 of which is angular. Formed integral with the web "39a is a horizontal web I69 which is substantially parallel to and spaced apart from the web II3. Formed integral with the web I66 is a web I6I which extends upwardly along an angle which converges toward the angle of the surface I59. Thus the inner surfaces of the webs I58, I69, and

I6I form a cavity I62 which is generally rhombic. The weather strip I63 therein conforms to the three sides mentioned and has formed integral "therewith angular portions I64 and I65. The

angular portion I64 is longer than the portion I65 and underhangs the latter. The portion I65 contacts the portion I64 along a line spaced apart from the inner edge thereof.

Coextensive with the web II9 of the meeting rail II 4 is a web I66, and formed integral with .the web I66 is a web I61 whichv extends downwardly and the lower surface I68 of which is doubly beveled to match the angularities of the surfaces of the portions I64 and I65. When the sashes are closed the end I68 engages the surfaces I 64 and I 65, moves them downwardly under tension and forms double lines of contact therewith whichprevent air from passing therethrough.

. In Figure 6 is shown a modification of 3' the weather strip arrangement in the bottom of the lower rail I36 of the lower sash. The shapes shown in Figure 8 are substantially identical with the shapes shown in Figure 5, the only difierence being in the weather strip per se. Consequently, the same like elements in Figure 8 are given the same numerals as those in Figure 5. The weather strip in Figure 8 includes a horizontal portion I69 which at one end thereof has a portion I16 which -surface I29,at the point-designated by the numeral I15. This form of weather strip, as may be seen in Figure 8, contacts the, sill along two parallel lines of contact and thus forms a double barrier against air passing therethrough.

In Figures 9 and 10 are shown my new and. improved check block or rubbing strip arrangement. The parting strip 26 of the jamb I6 has formed therein a rectangular, horizontal slot I 16 and spaced apart therefrom in this parting strip is a second rectangular slot I11. A channel-like member I18 has side portions I19 and I86 formed integral therewith. An angular extension I 8| of the portion I19 embraces the web 28 and engages the surface 29 of the parting strip 26. An angular extension I82 of the portion I89 embraces the webtil and engages the angular surface 3|.

The upper end of the middle web of the channel member I18 has formed integral therewith an extension I83 which is angular with respect to the main web I 18. The lower end of the middle portion of the web I18 also has formed integral therewith an extension I84 which is angular with respect to the web I18. The channel member I18 and its extensions described are preferably made of springy material, for example, Phosphor bronze; and the extensions I83 and I84 which normally contact the parting strip 26 tend to urge the channel member I18 to the left, as seen in Figure 10 and, consequently, the rectangular portions I8I and I62 are urged against the angular surfaces I29 and I 3 I. A web I85 contacts the back face of the channel member I18 and is spotwelded thereto as shown at I66 and I81 in Figure 10. Continuous with the web I85 isan upper angular portion I88 and a lower angular portion I89. The portion I88 extends horizontally through the slot I11 formed in the parting strip I26 and is bent downwardly so that a portion I90 thereof contacts the inner face of the web 26. Likewise an extension of the portion I89 extends through the slot I16 and has a straight portion I6I which contacts the inner face of the web 26.

It will be noted from Figure 9 that the sides I19 and I86 of the channel member I18 are contacted by the surfaces of the webs 39 of the stile 46 of the lower sash 23, and by the surface of the web I92 of the stile I83 of the upper sash 2|. The check-block above described is'contacted by the is offset from and parallel to the web 95.

extensions on the meeting rails and thereby forms end seals therewith.

Referring again to Figure 4, the web 76 is pref erably in alignment with the webs B8 and I3. The web I93 is preferably in alignment with the webs 66 and I3, and it is provided with a thickened portion I 94 which forms a pad with which a screen or a storm window may member up.

Extending at right angles from the juncture of the portion 69 and the Web I6 is a web I95 which The corner where the web I95 joins the portion 69 may be reinforced with a square section I99. Formed integral with the web I95 and extending at right angles thereto is a web I91 which is substantially parallel to the web I6 and the space between these webs forms a channel for a screen or a storm window. The webs described above also appear on the left section, and like the other numerals on the left section theyare followed by the letter a.

Referring now to Figure 5, the offset depending portion 99 is joined to the web 91 by a web I98 and the Web I98 slants downwardly so that water fallin thereon will fall beyond a screen or storm window positioned within the channel formed between the web I6 and the web I9'I.

In the form shown in Figure 5, the frame is shown as applied to a building which has its exterior shingled or weather boarded and at the top a shingle is designated by the numeral I 99 and at the bottom by the numeral 209. Between the shingle r siding, caulking compound, such as is shown at 20I, may be employed. Likewise caulking compound may be applied between the lower edges of the shingles I99 and the web I98 at the top and between the shingles or siding and the sections I96 along each side of the window frame.

Obviously with other types of construction the frame of the window may also be sealed and caulked.

Although I have herein shown and described, by way of example, my new and improved weather stripping for effecting seals between 1) the upper and lower sash and the jambs; (2) between the upper rails of the upper sash and the head of the frame; (3) between the lower sash and the sill; (4) between the meeting rails of the sash; and, (5) between the ends of the meeting rails and the jambs, it is obvious that many changes may be made in the arrangements shown and described without departing from the spirit of the invention as set forth in the following claims.

What is claimed is:

1. In metal window construction, a window 5 frame having a head which includes a longitudinal cavity the interior of which communicates with the lower surface of said head, weather strip means positioned within said cavity and having free edges extending downwardly therefrom beyond said lower surface, a sash sliding in said window frame, said sash having a pair of spaced longitudinal grooves therein, which are spaced apart from each other a distance substantially equal to the space between said free edges, so that when said sash is slid upwardly to bring said top rail into abutting relation with said lower surface, contact is established between said free edges and the corresponding grooves. V

2. In metal window construction, a frame having jambs with at least one vertical channel in each jamb, each vertical channel having opposed vertical sides, each of said channels havin extensions on its edges, which project toward each other and slightly overhang the space within the channel, a sash having stiles with a set of oppositely disposed vertical channels formed therein, said sash being slidably supported in said first vertical channels, and weather strip means supported in said second mentioned vertical channels and having spaced free portions in contact with the surfaces of said first vertical channels, said portions in contact being overhung by said extensions, the extensions on said first mentioned vertical channels having V-shaped grooves formed therein which are spaced apart from and which overhang the edges of said free portions of said weather strip means.

ALBERT STORMS.

REFERENCES CITED The following references are of record in the Number Name Date 1,609,631 Rappaport Dec. 7, 1926 1,676,193 Lee July 3, 1928 1,748,986 Lane Mar. 4, 1930 1,789,970 Dreher Jan, 27, 1931 2,077,056 Plym Apr. 13, 1937 2,084,776 Peremi et al June .22, 1937 2,189,960 Montgomery et al. Feb. 13, 1940 2,200,548 Grady et a1 May 14, 1940 2,219,593 Lang Oct. 29, 1940 2,250,723 I Peremi et al. July 29, 1941 2,299,651 Peremi et al Oct. 20, 1942 2,304,063 Peremi et al. Dec. 8, 1942 2,418,014 Daab Mar. 25, 1947 FOREIGN PATENTS Number Country Date 502,286 Great Britain 1939