US2075894A - Window ventilator for double hung sash - Google Patents

Description

- April 6, 1937.

H. M. GEBHARDT WINDOW VENTILATOR FOR DOUBLE HUNG SASH Filed Nov. 4, 1955 Patented Apr. 6, 1937 UNITED STATES PATENT OFFICE Henry M. Gebhardt, Chicago, Ill.

Application November 4, 1935, Serial No. 48,172

6 Claims.

The invention relates to improvements in a window ventilator for double hung sash over various types heretofore in use, some of which are patented, but the patents evidently are for the type of frame used, and the objects of the improvements are: first, to provide a ventilator which can be of service at times when it is most needed, that is during rainy, snowy or sleeting weather. Due to the construction of my venti- 10 lator, the rain or drip of melting snow or sleet is deposited on the same outside window sill on which it is deposited when a window is closed; second, it will not rattle or make a disturbing noise during windy weather.

This invention is accompanied by a drawing on which Figure 1 is a vertical view as one would see it from the outside of the window and shows the vertical portion, the vertical view of the sloping portion, the lower vertical part which when in place in a window frame is between the inner window sill and the sash when the window is.

closed, the two end wings on each of which are shown two notches cut in the outer edges at 15 degrees and bent out at 15 degrees, thus providing two saw teeth, which when the ventilator is placed in a window frame, the extreme ends of the wings fit between the sash and the sash stop. The saw teeth provide an anchor in the sides of the window frame. Figure 2 is a top view of Figure 1 and shows the top stiffener flanges along the top of the vertical portion, and the two brackets, a horizontal view of the sloping portion which is shown to be cut at an angle at each end. This is to provide for tension in the brackets. Figure 3 is a vertical cross section'looking toward the left end and shows the end bracket. The dotted line shown parallel to the sloping bottom is the edge of the sloping bottom bent to stiffen the bottom and to provide for a weather stop.

Part I is the main part which forms the ventilator and is made of one piece of sheet metal. Part 2 is a flat spring to obtain a certain tension on each of the two end brackets. Part 3 is a rivet of sufficient strength to support springs 45 No. 2.

Part I can also be made twopiece by overlapping one another. It can be adjusted in length to fit a certain window and be bolted together,

the holes for the bolts being provided by partly a and not completely punching through the metal at such intervals so that certain of these punchings can be easily pushed out to provide the holes for the bolts.

- This specification is also accompanied by a 00 drawing which shows the ventilator in place in a window frame to show clearly how it is intended to be used, as this may not be easily understood by means of words only. From this drawing it will be noted that the vertical flange at the bottom and the two end wings fit against the outside of the sash stops and the inner sill allowing the sash to slide by and to be completely closed if so desired.

I am aware that prior to my invention window ventilators of various types were made. I therefore do not claim a combination of such but I claim:

1. A window ventilator formed of a sheet of metal blank, folded to form a vertical front wall and side walls inturned therefrom, a bottom wall folded along the lower edge of the front wall with its ends underlying the side walls, the free ends of said side and bottom walls being folded outwardly to form a substantially flat and narrow surface on three edges of the ventilator, the two ends of said bottom wall being upturned and converging toward the front wall forming means for limiting the outward positioning of the side walls while permitting of their inward movement.

2. A-window ventilator formed of a sheet metal blank folded to form a vertical front wall and side walls I inturned therefrom, a bottom wall folded along the lower edge of the front wall with its ends upturned and in juxtaposition with the side walls, the free vertical ends of the side walls and the adjoining end of the bottom wall being formed to provide a flat and narrow continuous surface along one open end of the ventilator, the upturned ends of the bottom wall being outwardly of the side walls for limiting the outward positioning of said side walls while permitting of their free inward movement.

3. The combination of claim 2 hereof in which the upturned ends of the bottom wall are in spaced relation with the side walls permitting of adjustment of said side walls with respect to the bottom and front walls.

4. The combination of claim 2 hereof in which there are spring means coacting with the front and side walls urging said side walls in engagement with the upturned portions of the bottom wall.

5. The combination of claim 2 hereof in which the lower edges of the side walls are inclined to determine the inclination of the bottom wall when folded.

6. The combination of claim 2 hereof in which the top edges of the front and side walls are folded to form a relatively flat top surface on the ventilator.

HENRY M. GEBHARDT.

CERTIFICATE OF CORRECTION.

?atent No. 2,075,894 April 6, 1937.

HENRY M. GEBHARDT.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 1, column 1, beginning with line 1, strike out all to and including line 8, in second column of said page and insert instead:

This invention relates to improvements in window ventilators and is more particularly directed to that type of ventilator which is adapted to be attached to a window to deflect the current of air passing therethrough and to prevent snow, rain and dust from entering the room while permitting of the passage of the current of air.

The chief objects of the present invention are the provision of a ventilator that is strong, durable and inexpensive to manufacture and which is constructed and formed of a single piece of material and being arranged in a flexible manner so as to be adjustable for windows to which it is applied.

A further object is the provision of a window ventilator that extends inwardly of the window and which has a bottom wall forming a drain for sleet, rain, etc., that may be carried therein while the ventilator is in use.

And a further object is the provision of a window ventilator that has its side walls arranged to flex or yield so as to offer a yieldable resistance to the frame of the window to which it is applied for retaining the same in position therein, and whereby the side walls of the ventilator may be readily sprung for removing the same, and, when in position, the window may be raised or lowered without the inconvenience of removing the ventilator.

Referring to the drawing: I

Figure l is a plan sectional view taken through the window frame and lower sash, and illustrating my improved type of window ventilator in position therein.

Figure 2 is a view of the blank of the ventilator illustrating in dotted lines the manner in which it is folded to produce a completed ventilator.

Figure 5 illustrates a perspective view of the completed ventilator formed from the blank shown in Figure 2.

Figure 4 is a partial detail sectional View taken on the line 4-4 of Figure 3.

Figure 5 is a partial detail perspective view of the left hand portion of the ventilator shown in Figure '5, illustrating the ide wall thereof sprung inwardly to assume the position shown in Figure l whenattached to a window; and

Figure 6 is a partial detail sectional view taken on the line 6-6 of Figure 5.

In constructing the ventilator, I prefer to provide a blank (Fig. 2) which is of relatively thin and strong sheet material having notched-out portions ll and 12 on one edge thereof and which is also notched at and 14- at near each end thereof along the same edge. These notches form a guide along which the blank is folded vertically. The lower ends of the blank. are notched at 15 and 16 so that the blank 10 will assume the shape shown in Figure 2, and the side edges of the blank are each provided with a pair of relatively small sheared out portions 17 and 1.8. The blank is then folded. vertically at the notches ll and 12 along the lines 19 and 20 to form a front wall 21 therebetween and side walls 22 and 23. Then the side walls are formed outwardly on the notches l3 and 14 along the lines 24 and 25 to form flanges 26 and 27.

When the device is folded along the lines 24-l9 and 20-25 aligned with the notches 15-11 and l2l l, these folded portions form the side walls 22 and 2-3,. respectively, the extreme portion outwardly of the lines 24 and 25 form outwardly extending flanges 26 and 27.

The por ion extending between the notches l5 and 16 provides the bottom wall 28 and is fOlLGd along the line 29 so as to engage the inclined lower edges 22a and 25a of the side walls 22 and 25, and at near the extreme edge, the bottom wall 28 is formed along the line 30 so as to form a depending edge 31 parallel with the outwardly extending flanges 26 and 2'7 (Fig. 5) The ends of the bottom wall 28 are formed upwardly on the lines 52 and 55 to provide upwardly extending side flanges E4l-55 that converge from the line 50 to the lines 19 and 20, so as to form the bottom wall 28 of the same width as the front wall 21 and the formed portion 51 of the bottom wall that meets the flanges 26 and 27 being relatively wider so as to permit of a yieldable movement of the side walls 22 and 23 to permit them to be moved inwardly when the ventilator is positioned in the window, as indicated in Figure l. The portion between the notches ll and is folded outwardly on the line 56 to provide a top flange 37 along the front wall 2l of the ventilator, and the portions between the notches 11 and 15 and 12 and 14 are formed inwardly along the lines 38 and 59 to provide inwardly directed flanges 40 and 41 on the side walls 22 and 23.

when thus formed, the blank 10 provides a complete ventilator that is then adapted to be readily positioned in a window to be attached thereto without the use of screws, nails or other fastening means. In order to attach the device, it is only necessary to open the window, spring the side walls 22 and 23 of the device inwardly to pass the side frame of the window and to then position the depending edge 31 along and flush with the sill and the front wall of the ventilator directed toward the inside of the room, and to then release the side walls 22 and 23 to permit the outwardly extending flanges 26 and 27 thereof to engage the sides of the Window frame with their notches l7 and 18 forming grips to prevent the movement of the ventilator when so attached.

In order to exert a greater tension to the side walls 22 and 25 and to form stiffening means therefor, a pair of L-shaped members 42-42 are provided which are preferably of spring material and which have one leg 43 thereof secured to the front Wall 21 and their other legs 44 secured to the side walls 22 and 23, respectively.

When the ventilator is in position (Fig. l) the window frame 'A may be raised or lowered at will Without interfering With the ventilator or the ventilator interfering with its movements, as the material is relatively thin and the space required for installing the same is merely the thickness of the outwardly extending flanges 26 and 27.

and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 20th day of July, A. D. 1957.

Henry Van Arsdale (Seal) Acting Commissioner of Patents.

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