US906142A

US906142A - Ventilating window-screen.

Info

Publication number: US906142A
Application number: US38740107A
Authority: US
Inventors: George H Knight
Original assignee: Individual
Current assignee: Individual
Priority date: 1907-08-07
Filing date: 1907-08-07
Publication date: 1908-12-08
Anticipated expiration: 1925-12-08

Description

G. H. KNIGHT.

VENTILATING wmnow scum.

APPLICATION FILED AUG. 7, 1907.

906, 142. Patented Dec. s, 1908.

4 SHEET8-BHEBT 1.

G. H. KNIGHT.

VENTILATING WINDOW 301mm.

APPLICATION FILED 5116.7. 1907. 906,142. Patented Dec.8,1908

4 SHEETS-SHEET 2.

'rni ucRRas PETERS m wnsmevcmm P G. H. KNIGHT.

VENTILATING WINDOW SGKEEN.

APPLICATION FILED AUG. '1. 1907.

906,142. Patented Dec. 8, 1908.

4 SHEETS-SHEET 3v G. H. KNIGHT.

VEHTILATING WINDOW SCREEN.

APPLICATION FILED AUG. 1, 1907.

Patented Dec. 8, 1908.

4 SHEETS-SHEET 4.

GEORGE H. KNIGHT, OF EVANSTON, ILLINOIS.

VENTILATING WINDOW-SCREEN.

Specification of Letters Patent.

Patented Dec. 8, 1908.

Application filed. August 7, 1907. Serial No. 387,401.

To all TIIiO'TIL it may concern:

lie it known that I, Gnonon H. KNIGHT, a citizen of the United States, and a resident of Evanston, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Ventilating \Vindow-Screens; and I do hereby declare that the following is a. full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to a ventilating window screen and more especially to a. screen which can be removably placed in position in the frame of a window in the opening left by the raising or lowering of one of the Window sashes and which is provided with means for regulating or controlling the amount of air passing therethrough.

The invention consists in the matters hereinafter more particularly set forth and pointed out in the appended claims.

My invention may be better understood by reference to the accompanying drawings, in which,

Figure l is a perspective view of the inside of a window casing showing the lower window sash raised and my novel ventilating screen in place therebelow. Fig. 2 is a horizontal section through the side members of the screen frame. Fig. 3 is a vertical section, on line 33 of Fig. '7. Fig. 4 is a transverse vertical section through the right hand side member of the screen frame, looking toward the center thereof. Fig. 5 is a horizontal section, on the line 55 of Fig. 7. Fig. 6 is an inside face view of the lower right hand corner portion of the screen frame. Fig. 7 is a view in perspective of the upper right hand corner portion of said frame. Fig. 8 is an outside face view of the lower portion of the screen frame. Fig. 9 is a horizontal section through the right hand side member of the screen frame showing a modified form of construction thereof. Fig. 10 is a horizontal section through the side members of the screen frame showing a modified form of construction thereof. F ig. 11 is a view in perspective showing a modified form of my novel ventilating screen in place in the upper part of a window frame in the space left by the lowering of the upper sash. Fi 12 is a horizontal section through the side members of the frame thereof. Fig. 13 is a view similar to Fig. 12,

showing a slightly modified form of the device shown in Figs. 11 and 12. Figs. 14 and 15 are horizontai sections through the side members of the screen frame showing two other modified forms of construction.

As shown in the drawings, in lfiigs. l to 8, inclusive, l5 designates the sill and 16, 16 the upright side members of a window frame, said latter members being provided each with inner and

outer stops

17 and 18, between which is slidably mounted the lower or inner window sash l9. Said window sash is shown in a raised position to allow the placing thereunder of a screen frame comprising two

upright side members

22 and 23, an upper horizontal member 2% and a iower horizontal member 25. On the said screen frame is stretched a piece or layer 26 of porous or foraminous sheet material, which may consist of muslin, cheesecloth, closely woven wire cloth, or other sheet material having such minute perforations as to permit the passage through it of air for ventilation, but which will act as a barrier to the passage of wind or strong drafts, and also serve to exclude from a room particles of dust. As illustrated in said Figs. 1 to 8, the sheet material is secured at its edges to the outside faces of the upper, lower and side members of the screen frame. 27 and 28 (Fig. 8) indicate strips of wood or other material which may be applied to cover the edges of the sheet material 26 and which are shown as secured to the members of the screen frame by means of screws. On the inner face of said screen frame is located a movable curtain 29 which is made of flexible sheet material which is impervious to air and is adapted to cover to any desired extent the opening through said screen frame, in order to regulate or control the size of the area for the passage of air therethrough. Said curtain may consist of any suitable flexible sheet material, as a closely woven fabric or sized or painted cloth. Moreover, said curtain may be made of more than one thickness, and if desired of waterproof material, or have a coating or layer of waterproof material on its outer face. The said curtain 29 as illustrated is secured at its upper edge to and is rolled upon a spring actuated curtain roller 30 of common form. Said roller 30 is arranged horizontally at the upper part of the screen frame, being mounted in brackets 31 which are fixed to the upper ends of the

side members

22 and 23 of the screen frame. The lower free margin of said curtain is stiffened by an attached rod or stick 33. The ends of said stick. and the side margins of the curtain are confined beneath a pair of guide strips 34. and 35 which are secured to the inner faces of the side members of the screen frame and are extended toward each other past the inner faces of said side members. By this means the lower free margin of the curtain, as well as the side margins thereof, are prevented from flapping or fluttering in currents of air. Near their upper ends said strips are laterally notched or recessed, as indicated in Fig. T by the reference numeral 36 for the passage of the side margins of the curtain. Said strips are also horizontally slitted near their upper ends to form prongs which are bent outwardly to form the two roller-sn :)porting brackets 31.

Referring now to the means illustrated for securing the screen frame removably in place in the window frame, said means comprises features of construction as follows: The side member 23 is provided with a vertically extending guide bar 37 which is arranged in tcicscopic relation therewith and adapted to he moved inward and outward in order to decrease the width of the screen frame and allow for its being inserted between the stops 1? and 18; and also to widen the frame in order that it may fill the space between the upright members it). 16 of the window frame when the screen is in position. Said guide bar member 37 consists of a piece of sheet metal bent into U-form and arranged with its parallel side flanges in overlapping relation to the inner and outer faces of the frame member 23. Said bar 37 has sliding engagement with the faces of said frame member 23 and is pressed outwardly or toward the vertical member 16 of the window casing by means of coiled springs 33 interposed between the outer face of the frame member 2 and the inner face of the said bar 37. Said springs 38 encircle and are held in place by pins or rods 39 which are fixed to the inner face of the bar 37 and extend through horizontal openings in the side member 23. Said pins are provided at their inner ends with heads by means of which the outward movement of the movable bar 37 is limited. The inner flange of the said bar 37 is provided at its margin with an integral laterally extending ear or tab it), which forms a. handle by means of which said bar may be pressed or drawn inwardly.

The outer flange of the bar 37 is extended atits lower end below the bottom edge of the screen frame and is sharpened to form a spike or spur 42, and at its opposite side the lower member of the screen frame is provided on its outer face with a short downwardly extending strip of metal 43 which is 'on both sides of the window casing.

likewise sharpened at its lower end to form a spike or spur 44. Said spikes or spurs are adapted to be forced into the wood of the sill, in order to hold the screen from being pushed outward and in contact with the inner stops 1?, 17. The top of the screen frame is kept in position by means of a strip of sheet metal which is secured to the inner face of the top member of said screen frame and projects above the same to form a vertical flange 4-6 which is adapted to bear outwardly against the lower horizontal member of the window sash.

47, at? indicate packing strips interposed between the stops 1'? and the side faces of the screen frame.

49 indicates a like. packing strip of felt or other suitable material which is interposed between the top surface of the upper member 24 of the screen frame and the bottom surface of the lower member of the window sash. Said packing strip is extended outwardly at its ends over the nppcr end of the movable frame member 31'', as indicated by the dotted lines in l ig. 5 and said extended portion rests upon a short strip of sheet. metal 52 tl igs. i and T) which is formed integral with and extends horizontally from the upper end of said movabie frame member 37.

In Fig. 9 shown a modified form of construction of the device above described, wherein the screen-frame is made of such thickness as to entirely till the space between he inner and outer window strips 1? and 1 hen said modiiicd form of construction is ei'nploycd. the spikes 4:3 and 4-1 at the lower edge of the screen frame and the vertical flange 46 at the upper edge thereof may be omitted. Said modified form of con strnction is in all other respects similar to the devic above described.

in Fig. 10 is shown another modified form of construction wherein the telescopic feature of one of the side members is omitted and. the screen frame is made of such width as to permit its being inserted between the inner and outer window stops 1? and 13. respectively, and then placed in a central position with its side members overlapping and engaging with the inner window stops Said screen frame is provided at its lower edge with spikes similar to the spikes 4% above described, by means of which the screen frame is maintained in a central position in engagement with the stops at both sides of the window casing.

.111 Figs. 11 and 12 is shown a modified form of my novel ventilating screen which is designed to be placed in a window casin in either the upper or the lower part thereo Said modified form of construction shown in i igs. 11 and 1'2, comprises a screen frame similar in all respects to the screen frame above described except that the side members thereof are each provided with a vcr- 5 frame in order 3 made of such width as to permit its being intically extending recess or groove, to allow them to engage with the side members 60 and (31 of the window casing without interfering with the proper action of a pair of sash pulleys and sash cords (3-2, 63, by means of which the window sash is counterbalanced; and the vertical flange 46 which is secured to the inner edge of one of the horixontal members of the frame is replaced by a llange (35 which extends outwardly from the said frame member and thence vertically upwardly. It is intended that said modified form of ventilating seieeu shall be inverted or turned with the said flange and the curtain roller at the bottom thereof and shall be placed centrally within the window casing between the inner and outer stops and with the said vertical flange (to engaging with the. top frame member of the upper window sash, said sash being lowered to allow the screen to be placed in position. As shown in Fig. 12, one of the fixed side members of the screen frame (36 is provided with a vertically extended recess 68 and at the opposite side of said screen frame the movable side member 9 is shown as ha ing its end face bent inward to form a recess T1; into which recesses the pulleys G2, 62 extend and in which the sash-cords G3 op crate.

The device shown in Fig. 13 is similar to that shown in Figs. 11 and 12 with the following exceptions. In this instance, the vertically extending recessed movable and stationary side members 72 and 73. respectively, are made thick enough to till the spaces or grooves between the inner and outer window stops 17 and 18 whereby the screen frame is held firmly in place by its contact with said stops, and no other securing means is required to hold the frame from either inward or outward movement, and the screen-frame is provided with an external covering H of open mesh wire cloth. intended to protect the air-excluding sheet 26 from injury when said sheet is made of muslin or other textile fabric not itself strong enough to withstand rough usage. The protecting sheet Tl also serves as a guard to prevent accident through the giving away of the air-excluding sheet 26 when the latter is made of material of little strength, such as muslin or cheese-cloth. In the case of a car window, and in other cases, the supplemental sheet of Woven wire fabric will prevent contact with the inner sheet 26 of hot. cinders which might injure the same by burning. In this instance, moreover, packing stri )

S

76, 76 of felt or the like, are interposed between the adjacent faces of the screen frame and the inner window stops 17.

In Fig. 14 is shown another modified form of construction wherein the telescopic feature of one of the side members of the screen is omitted and the screen frame is sorted between the inner and outer window stops 1? and 18. respectively, and then being placed in a central position with its side members overlapping and engaging with the inner window st ops on both sides of the window casing. Said screen frame is hold in place in engagement with the inner window stops by means of locking pins or bolts 80,

80. which have sliding engagement with horizontal openings through the ship :nenr

hers and are yicldingly pressed outwardly and into engagement. with ODCHIRQ'S in the side members of the window casing by means of springs bl. Said springs St are arranged within enlarged portions of the openings through the side members and engage at their ends with the bottom surfaces of said enlarged openings, and with collars 82 which are fixed to the pins 80. Said pins ex tend beyond the inner edges of the side members T9 to forn'i handles 83 by means of which the pins may be drawn toward each other to facilitate the placing of the screen frame in position; and by means of which the pins may be withdrawn from engagement with the openings in the window casing when it is desired to remove the screen. As a further modification, I have shown in said Fig. 14 the packing strips between the inner win dow stops and the inner face of the screen frame omitted and replaced by weather strips 8% of any ordinary, or preferred form.

In Fig. 15 is shown a form of construction similar in all respects to that. shown in Fig. 14 except that the locking pins are placed closely adjacent to the inside faces of the side members of the screen frame, and said side members are rovided with vertical grooves or recesses similar to those shown in Fig. 13. whereby the screen frame may be laced in the upper part of a window casing, in the space left by the lowering of the upper window sash, as well as in the lower part; thereof.

A main feature of my invention consists in a ventilating screen provided with a porous or foraminous ventilating sheet and with an in'iperforate sheet or curtain which forms in effect a movable valve or closure by which the passage of air through the screen may be regulated or controlled as desired, and means by which the said curtain is at all times held in position adjacent to and parallel with the ventilating sheet. \Vhilc the curtain referred to is shown as mounted on a spring curtain roller, yet, so far as the general features of my invention are concerned, said curtain may be wound or rolled in any desired manner in order to prevent the same from extending beyond the margins of the screen frame when moved into position. to wholly or partially un cover the screen and any suitable or desired means may be employed for shifting or moving said curtain.

Another important feature of my invention is embraced in the construction by which the screen is provided in addition to the sheet of porous or foramlnous sheet material adapted to afford ventilation without the admission of drafts, With an additional protecting,sheet or layer of woven Wire cloth, and when said additional protecting sheet or layer is employed may be arranged outside of and at a distance from the ventilating sheet or layer as illustrated or other wise as may be desired or preferred.

I claim as my invention 2- 1. A ventilating screen constructed for removable insertion in a window casing, comprising a frame consisting of side, bottom and top members, a porous or foraminous sheet stretched on and secured at its margins to said frame, a movable imperforate curtain mounted on said frame closely adjacent to and parallel with said sheet, and means carried by the frame for maintaining said curtain parallel with said sheet.

2. A ventilating screen constructed for removable insertion in a Window, comprising a frame consisting of side, top and bottom members, a porous or foraminous sheet stretched on and secured at its margins to said frame, a flexible imperforate curtain, a roller for said curtain mounted on said frame inside said sheet, and uides carried by the side members of the frame for engagement with the side margins of the curtain.

3. A ventilating screen constructed for removable insertion in a Window casin comprising a frame consisting of top, ottom and side members, a orous or foraminous, sheet stretched on an secured at its margins to the outer side of said frame, a fiexible imperforate curtain, a roller for said curtain mounted on said frame in a plane inside of said sheet, and guide strips fixed to the inner sides of the side members of the frame adapted for engagement with the side margins of said curtain.

4. A ventilating screen constructed for removable insertion in a window casing comprising a frame consisting of side, bottom and top members, a porous or foraminous sheet stretched on and secured at its margins to said frame, a movable imperforate curtain mounted on said frame closely adjacent to and parallel with said sheet, means carried by the frame for maintaining said curtain parallel with said sheet, and a yielding device carried by the side member of the frame ada ted for engagement with the side member of the window casing to hold the frame in place.

5. A ventilating screen constructed for removable insertion in a Window casing, comprising a frame consisting of side, bottom and top members, a porous or foraminous sheet stretched on and secured at its margins to said frame, a movable imperforate curtain mounted on said frame closely adjacent to and parallel with said sheet, means carried by the frame for maintaining said curtain parallel with said sheet, a longitudinal guide bar mounted on one of the side members of the frame, and yieldi means for pressing said bar outwardl into engage ment with the vertical mem er of the window casing.

In testimony, that I claim the foregoing as my invention I afiix my signature in the )resence of two witnesses, this 16th day of duly A. D. 1907.

GEORGE H. KNIGHT.

Witnesses:

A. M. BUNN, SAMUEL D. HIRSGHL.