US2888985A - Heat protective devices for windows - Google Patents

Description

June 1959 G. A. ELLESTAD HEAT PROTECTIVEVDEVICES FOR WINDOWS Filed April 17, 1957 2 Sheets-Sheet 1 FIQI June 2, 1959 G. A. ELLESTAD 2,888,985

HEAT PROTECTIVE DEVICES FOR WINDOWS Filed April 17, 1957 2 Sheets-Sheet 2 W 'l 3T A! I F 6.6

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2,888,985 HEAT PROTECTIVE DEVICES FOR WINDOWS Gerhard A. Ellestad, Rochester, N .Y. Application April 17, 1957, Serial No. 653,439

Claims. (Cl. 160-99) This invention relates to heat protective devices for windows and more particularly it has reference to such a device which is adapted to be positioned outside of a window in order to retard the entrance of heat into a room through the window opening.

Various types of awnings and blinds which are generally used for protecting Windows from heat rays of the sun have several disadvantages. Thus, the use of canvas awnings entails not only the inconvenience and expense of seasonal installation and removal but also the expense of replacing deteriorated canvas. The original or seasonal installation of an awning or blind cannot be easily accomplished by the average householder, especially on windows in the upper stories of a building. Metal awnings are relatively expensive and since they are usually installed permanently some of them cut off from the windows, in all seasons, a great deal of light which is needed on dark and cloudy days. It has also been proposed to provide heat reflecting surfaces on window shades but since shades are installed on the inner side of the window, a great deal of heat passes through the window glass and into the room before it strikes the reflecting surface of the shade.

One of the objects of my invention is to provide a heat protective device of the type described which will overcome many of the disadvantages of the prior art devices.

Another object is to provide a heat protective device of the typedescn'bed which will be relatively simple in structure yet efficient and convenient in operation.

A further object is to provide a device of the type described which embodies a surface which reflects heat rays away from the window and can be installed on or removed from a double hung window sash quickly and easily without the use of tools or special skills.

Another object is to provide a heat protective device of the type described embodying a roll of pliable heat reflecting material and means for detachably mounting the roll substantially in the plane of the upper sash of a double hung window so that the material may be selectively moved outside of the window in operative covering relation thereto.

A further object isto provide a protective device comprising a roll of pliable, heat reflecting material which is so mounted that it may be selectively moved into operative covering relation adjacent the outer side of a window even if an auxiliary unit such as a screen or storm sash is carried by the window frame.

Still another object is to provide means for detachably mounting on a double hung window a supply of pliable heat reflecting material which may be selectively posi- V tioned between the glass in the window and an auxiliary 4 unit such as a screen or storm sash mounted on the outer portion of the window frame so as to retard the entrance l of heat rays through the window.

A further object is to provide a heat protective device 1 for windows which embodies a roll of pliable sheet material having a heat reflecting surface and is detachably filed rates Patent Q Patented June 2, 19.59

2 carried by a double hung window so that the material may be selectively positioned outside of the window to reflect heat rays outwardly and away from the window.

These and other objects and advantages reside in certain novel features of construction, arrangement and combination of parts as will hereinafter be more fully described and pointed out in the appended claims.

Referring to the drawings:

Fig. 1 is a vertical sectional view of a frame and double hung window equipped with a heat. protective device which embodies the invention.

Fig. 2 is a fragmentary face view thereof looking from the right side of Fig. 1 and taken along line 2-2.

Figs. 3 and 4 are fragmentary views of details.

Fig. 5 is a view similar to Fig. 1 showing a modification ofthe invention.

Fig. 6 is a fragmentary face view of the modification shown in Fig. 5, as viewed from the right side of Fig. 5.

Fig. 7 is a view also similar to Fig. 1 and showing a further modification of the invention.

A preferred embodiment of my invention is disclosed in the drawings wherein 15 indicates the frame of a double hung window comprising the upper sash 16 and the lower sash 17. These two sashes, which carry the usual glass panes 18, are mounted for vertical sliding movement in a well known manner, with the lower sash 17 mounted towards the inner side of the frame and the upper sash 16 mounted towards the outer side of the frame.

According to the invention, there is provided a heat protective device comprising a strip of pliable sheet material 19 which is stored by winding it as a roll 20 on roller 20 which is of the spring-actuated type in wide use as a roller for window shades. The roller 20, on which the sheet material 19 is wound, may be made of wood and has at its respective ends the usual round and fiat bearing projections 21 and 22 which coact with the brackets 23 and 24 for rotatably mounting the roller in a well known manner. The two brackets 23 and 24- are respectively secured, as by rivets 25, to the adjacent ends of an elongated plate or base 26 which is a little shorter in length than the upper rail 27 of the upper sash 16 and of substantially the same width so that the base 26 may be rested upon the upper rail of the lowered upper sash 16, as shown in Figs. 1 and 2.

In order to detachably hold the base 26 on the top edge or upper rail of the sash 16, there are provided on opposite ends of the base 26 suitable means such as the depending, resilient U-shaped members 28 which are secured to the base by rivets 28. The depending sides 29 ofthe members 28 act as resilient clamping fingers and yieldably grip the opposite sides of the upper rail of sash 16 as clearly shown in Figs. 1 and 2. With this construction, the roller 20', carrying the supply of rolled material 20, may be detachably secured to the upper rail of the upper sash 16 (which is slightly lowered) so that the roller 20' and the rolled up material 20 will be positioned substantially in the plane of the sash 16. The outer end of the strip of sheet material 19 is reversely folded and fastened to provide a looped portion 30 for receiving a wooden slat 31 into which is fastened a screw eye 32 for attaching thereto the flexible cable or pull string 33.

In use, the upper sash 16 is lowered to a convenient height so that the base 26 carrying the supply roll of material 20 can be positioned on the upper rail or edge of the sash 16 as shown in Fig. 1, the pull string 33 having first been dropped down along the outer side of the window. The sash 16 may then be raised until the roll 20 is positioned just below the upper part of the window frame as shown in Figs. 1 and 2. The lower sash 17 is then raised sufficiently to permit one to grasp the pull string 33 and the strip of material 19 is then pulled down from the roller 20 so as to substantially cover the entire outer surfaces of the glass panes 18. The sash 17 may then be lowered as shown in Fig.1 or it may be left partially raised if ventilation is desired, If the upper sash 16 slides easily, it may be necessary to hold it in position with one hand while the material 19 is unrolled by pulling the string 33 with the other hand.

While the pliable sheet material 19 may be formed of any suitable material which will reduce the amount of heat rays which will strike the window, 1 preferably use a pliable sheet material which has been treated so that its outer surface will reflect heat rays. Good results have been obtained by using a pliable, laminated sheet material which had been made by depositing a bright reflecting metallic coating, such as aluminum, on a thin, transparent plastic sheeting which is then backed up with a thin cloth fabric. Such pliable sheet material may be easily rolled on the roller 20 and it is, of course, positioned on the roller so that the heat reflecting, metallized surface faces outwardly when the roller 20 is installed on a window sash as shown in Figs. 1 and 2. Various other types of pliable sheet material with heat reflecting properties may be used, such as metallized fabrics or the like. Material such as metallized plastic sheeting is not damaged by rain.

As shown in Fig. l, the heat protective device may be used on a window which is equipped with an auxiliary unit such as a screen 34 which is carried by a frame 35 mounted outwardly of the window sash on the frame 15. Such an auxiliary unit will prevent the unrolled strip of material 19 from whipping about when the wind blows so that the device is protected against damage by windstorm. Similar advantages are attained if the auxiliary unit is in the form of a full length storm window or a unit having one half of glass and the other half of screen. Heat rays from the sun will pass through the expanse of material such as glass or screen of the auxiliary unit so that the heat reflecting material 19 will function to reflect the heat rays outwardly and away from the glass 18 in the window sashes. The auxiliary unit, embodying either the screen 35 or a glass pane (not shown), is usually spaced only a relatively short distance from the upper sash 16, and while there is ample room therebetween to receive the unrolled sheet material 19, there is not suflicient room for the roll 20. This problem has been solved by mounting the roller 20' and roll of material 20 so that they are positioned substantially in the plane of the upper sash 16 and, as shown in Fig. 1, this may be accomplished by mounting the roller 20' on the upper rail 27 of the upper sash 16. When the strip of material 19 is unrolled so as to cover the window glass panes 18, it will also tend to provide a quiescent or dead air space which will have insulating properties and aid in retarding passage of heat through the glass 18.

In the modification shown in Figs. 5 and 6, the roller 20 carrying the rolled pliable sheet material 19 is rotatably mounted on brackets 23 and 24 which are secured to the elongated base 40. An integral projection 41 which extends inwardly and upwardly from the base 40 is secured to the parting bead or stop 42 of the window frame 15 by means of screws 43. By this construction, the roll of material 20 is mounted above and substantially in the plane of the upper rail 27 of the'upper sash 16 so that the pliable sheet material 19 may be unrolled and positioned opposite the outside of the window panes 18, as shown in Figs. 5 and 6. With this arrangement, the roll of protective material 20 may be held in position in a more or less permanent manner by means of the screws 43. Other means, such as hooks or clamps could be used to detachably hold the roll 20 above and in the plane of the upper sash 16.

In operation of the device shown in Figs. 5 and 6, it is merely necessary to raise the lower sash 17 and pull the material down from the roll 20 by means of the cord 33.

In this modification, the unrolled material 19 is also positioned between the window sash and the auxiliary unit such as a screen 34 carried by frame 35 at the outer part of the frame 15. Hence, the unrolled material 19 is protected against whipping about because of a strong wind.

In the modification shown in Fig. 7, the roll 20 of pliable sheet material 19 is carried by a spring-actuated roller on brackets mounted within an elongated casing 50 which is mounted on the sill 51 of the window frame 15 so as to lie substantially in the plane of the upper sash 16. The casing 50 has the hinged cover 52 which is provided with an upturned edge 53 located adjacent the outer wall of the casing so as to provide the slot 54 for the passage of the pliable sheet material. When the material is rolled down and housed in the casing 50, the slat 31 will fit into the slot 54 so that the casing will thereby be substantially closed. The pliable sheet material 19 is withdrawn from the casing 50 by means of the pull string 33 which is attached to slat 31 and passes over a pulley 55, mounted at the upper part of window frame 15, and over the upper rail 27 of the lowered upper sash 16. The casing 51) is secured to the sill 51 or sides of the frame 15 by screws, not shown.

In this modification, the roll of pliable material 20 is mounted on the sill 51 so as to be substantially in the plane of the upper sash 16 and thereby permit the material 19 to be drawn upwardly so as to cover the window panes 18. As in the other forms of the invention, shown in Figs. l-6, the pliable sheet material may be positioned between the sash and an outer auxiliary unit such as the screen 34 carried on frame 35.

From the foregoing, it will be apparent that I am able to attain the objects of my invention and provide a simple yet effective heat protective device which can be readily secured to or removed from a window so as to retard the passage of heat rays into a room through the window. The pliable sheet material 19 may be formed of any suitable material which will retard the passage of heat rays. Pliable plastic sheet material which has been coated with aluminum to provide an efficient heat reflecting surface has proven very satisfactory. Such material is usually opaque but if it is desired to have the material such that it will transmit some light while still reflecting heat, a material such as described in US. Patent No. 2,774,421 may be used.

In the forms of the invention shown in Figs. 1-6, the roll 20 of material is mounted atthe upper end of the window frame 15 while in the form shown in Fig. 7 the roll 20 is mounted at the lower end of the frame. In all forms, however, the roll 20 lies substantially in the plane of upper sash 16 so that the sheet material 19 may be selectively unrolled from the roll 20 and brought into operative position adjacent the outer surfaces of the window panes 18. This location of the roll 20' makes it possible to use the heat protective device on a window even if an auxiliary unit, such as a screen or storm sash, is mounted on the window frame. The presence of an auxiliary unit, such as a screen or storm sash, will be advantageous since it would prevent violent whipping about of the sheet material 19 if it were left accidentally in an operative or unrolled condition during a violent storm. 7

The form of the invention shown in Figs. 14 may, of course, be readily mounted on or removed from the upper sash without the use of tools since it is merely necessary to place the base 26 on the rail 27 so that the fingers 29 yieldably grip the sides of the rail 27. The modifications shown in Figs. 5-7 may be installed in a semi-permanent, position by the use of screws or quick acting clamps (not shown) could be used instead of screws. In all forms of the invention, the entire areas of the window sash may be protected against heat rays and the sashes may be in substantially closed position so that heated air from outdoors will be pretty well excluded. All forms of my invention may be used advantageously on a double hung window equipped with an auxiliary unit such as a screen or an outer window or storm sash or combinations thereof.

Various modifications may be made without departing from the spirit of my invention as pointed out in the appended claims.

I claim:

I. In combination, a window frame, a double hung window having upper and lower sashes mounted for vertical sliding movement in the frame, an auxiliary unit mounted in the frame outside the Window, said unit including an expanse of heat ray transmitting material which covers at least a part of the area of the window, said unit being mounted in the frame to provide a free space between it and the sashes, a strip of pliable sheet material having a heat reflecting surface, a roller on which the strip of material is wound and means for detachably supporting the roller and material at one end of the frame in the plane of the upper sash and so constructed and arranged that the strip of material may be selectively moved into said free space in covering relation to the window and with its heat reflecting surface facing outwardly to thereby reflect away from the window heat rays which pass through the material of the unit.

2. The combination with a double hung window having upper and lower movable sashes of a heat reflecting device comprising a strip of pliable sheet material having a heat reflecting surface, a roller on which the material is wound, and means for detachably holding the roller and material above the top rail of the upper sash and with said roller positioned substantially in the plane of the upper sash, said heat reflecting surface facing outwardly of the window whereby the strip of material may be selectively unwound from the roller and brought outwardly of the sashes and into covering relation to the glass in the sashes so as to reflect away fro-m the window heat rays which are incident upon said surface.

3. In combination, a window frame, upper and lower sashes mounted for relative movement on the frame, a strip of pliable sheet material having a heat reflecting surface, a roller on which the strip of material is wound, and means carried by the frame for detachably mounting the roller and material along the top edge of the lowered upper sash with the roller lying substantially in the plane of the upper sash whereby the strip of material may be selectively moved down over the outside of the sashes, said heat reflecting surface of the material facing outwardly to thereby reflect heat rays away from the window.

4. A heat reflecting device for a double hung window having upper and lower relatively movable sashes, said device comprising a strip of pliable sheet material having heat reflecting properties on at least one surface thereof, a roller on which said strip of material is wound, and means for detachably supporting the roller and material on the upper rail of the upper sash with the heat reflecting surface facing outwardly whereby the sheet material may be selectively unwound from the roller and positioned outside of the window to thereby reflect outwardly heat rays which are incident thereupon.

5. In combination, a window frame, a double hung window having upper and lower relatively movable sashes mounted on the frame, heat reflecting means comprising a strip of pliable sheet material having a heat reflecting surface, said strip of material having an area large enough to cover substantially the entire area of the glass in both sashes, a roller on which the strip of material is wound and means supported by the frame for detachably holding the roller and material along and substantially in the plane of the top edge of the upper sash and so constructed and arranged that the strip of material may be selectively unwound from the roller and positioned outside of the window with its heat reflecting surface remote from the glass to thereby reflect heat rays away from the window.

6. A heat protective device for a double hung window having upper and lower relatively movable sashes, said device comprising a strip of pliable sheet material having at least one heat reflecting surface, said strip having an area to substantially cover the glass in both the sashes, a spring actuated roller on which the strip of material is wound, an elongated base, a pair of spaced brackets carried by the base for rotatably supporting the roller, and clamping means carried by the base whereby the device may be detachably secured to the upper rail of the upper sash with the base and roller extending along the top edge of the upper sash so that the strip of material may be selectively positioned outside of the window with the heat reflecting surface remote from the glass to thereby reflect heat rays away from the window.

7. The combination with a double hung window having upper and lower relatively movable sashes of heat reflecting means comprising a strip of pliable sheet material having a heat reflecting surface, said strip of material having an area large enough to cover substantially the entire area of glass in both sashes, a roller on which the strip of material is wound, an elongated base, spaced brackets carried by the base, said roller being rotatably supported by the brackets, and projecting clamping fingers carried by the base for gripping opposite sides of the sash whereby the base and roller may be detachably supported on the top rail of the lowered upper sash with the base extend ing along the upper edge thereof so that the sheet ma terial may be selectively moved across the outside of the sashes with its heat reflecting surface faced outwardly to thereby reflect heat rays away from the window.

8. The combination with a window frame having double hung window sashes mounted thereon and an auxiliary unit having heat transmitting material mounted on the frame outwardly of and in spaced relation to the sashes of a heat protective device comprising a roll of pliable sheet material having a heat reflecting surface, said roll of material being carried by the frame in the plane of the upper sash and constructed and arranged so that the material may be selectively moved from the roll into the space between the sashes and the auxiliary unit with the heat reflecting surface facing outwardly whereby heat rays passing through the material of the auxiliary unit are reflected outwardly and away from the sashes.

9. In combination, a window frame, a double hung window having upper and lower sashes mounted for relative movement in the frame, one of the sashes being mounted outwardly of the other, a strip of pliable sheet material having a heat reflecting surface facing outwardly, said material having an area large enough to cover both sashes, a roller on which said material is wound, means carried by the frame for detachably holding the roller and wound material at one end of the frame and with the roller and wound material lying substantially in the plane of the outermost sash, and means for selectively moving the material in covering relation to and outside of both sashes to operatively position the heat reflecting surface for reflecting heat rays away from the window.

10. The structure recited in claim 9 wherein said roller is mounted on the sill of the window frame.

References Cited in the file of this patent UNITED STATES PATENTS 1,780,461 Byars Nov. 4, 1930 2,325,992 Wirthman Aug. 3, 1943 2,624,403 Zelenko Jan. 6, 1953

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