US2779402A - Window ventilator - Google Patents

Description

Jan. 29, 1957 F. N. CANNING 2,779,402

WINDOW VENTILATOR Filed July 2o, 1954 2 shew-sheet 1 J mmf:

Jan. 29, 1957 F. N. cANNlNG 2,779,402

WINDOW VENTILATOR Filed July 20, 1954 2 Shee'ts-Sheet 2 United States Patent O WINDW VENTILATOR Frederick N. Canning, Birmingham, Mich.

Application July Ztl, 1954, Serial No. 444,430

7 Claims. (Cl. 160-102) This invention generally relates to window ventilator lou-vers and more particularly pertains to an integrally complete expandable and collapsible window ventilator unit which only requires attachment to the bottom sash,

Window ventilators have been employed heretorore to facilitate having a window open for air and to prevent wind, rain, snow, etc. from entering the room and so that a View through the opening is blocked to insure privacy. However, the several devices of the prior art have not proven entirely satisfactory inasmuch as they are complicated in design and construction, expensive to manufacture, diiiicult to use, and to mount in that special apertures, guides, and other means must be provided.

With the foregoing in View, the primary object of the invention is to provide an extendable and collapsible window ventilator louver set which is simple in design and construction, simple to install and use, and which does not require special apertures to be formed in the frame, extra guides, or co-operation with the sash guides of the window frame.

An object of the invention is to provide a ventilator unit assembly which requires only two screws to attach the unit to a sash in full operating condition.

An object of the invention is to provide a ventilator unit assembly which does not obstruct or encumber the appearance of the window.

An object of the invention is to provide a ventilator unit which easily changes from a spring-pressed locked storage position to an expanded or extended operative position.

An object of the invention is to provide a ventilator unit which has vertically positionable arms for holding and supporting the louvers in an expanded condition which makes the arms movable to a horizontal locking position for holding the louvers in a collapsed condition.

An object of the invention is to provide staggered steps on the arms in co-operation, relatively enlarged openings in the louver strips for spacing, and inclining, and supporting the louver strips.

An object of the invention is to provide a window ventilator which can be operated and mounted with ease by anyone. l

An object of the invention 'is to provide a window ventilator unit which can be fitted to all sized windows simply by cutting off the eXtra width ends provided such as with tin snips or a heavy pair of household shears.

An object of the invention is to provide a window ventilator unit composed of reversable parts so that tooling and die costs are reduced to a minimum and this benefit passed along to the public at a lower cost per unit.

These and other objects of the invention will become apparent by reference to the following description of a window ventilator louver unit embodying the invention taken in connection with the accompanying drawings in which:

Fig. l is an elevational view of the Iinventive device mounted on a partially shown sash with the louver strips extended.

Fig. 2 is a view similar to Fig. 1 showing the louver 2,779,402 Patented Jan. 29, i957 ice i elements in a raised position with `the supporting and positioning arms in the lower position in solid lines `and 'the raised clamping position in dotted lines.

Fig. 3 is a cr0ss-sectional View of Fig. 4 taken Ion the line 3-3 thereof.

Fig. 4 is a cross-sectional view of Fig. 3 taken on the line 4-4 thereof.

Fig. 5 is a relatively enlarged cross-sectional View of oneend of the unit such as seen in the cutaway portion ot Fig. 2.

Fig. 6 is a cross-sectional view of Fig. 4 'taken on the line 6-6 thereof.

Fig. 7 is a perspective view of the stepped positioning and locking arm or leg; and

Fig. 8 is a perspective View of the arm supporting bracket.

Referring now to the drawing, wherein like numerals refer to like and corresponding parts throughout the several ends, the Window ventilator unit disclosed to illustrate the inventive device comprises an attaching plate lil secured to the bottom. cross piece S of the window sash, suc'h as by the two screws lll at either end thereof with the device being designed to tit between the jam point-s I-l of the window frame and to extend downwardly to the sill portion S as `adjusted by raising and lowering the sash S with the device attaching thereon.

More particularly, the inventive device comprises a mounting plate lt) which is substantially lm-shaped in cross-section having a rst `side l2 attached to the sash bottom cross piece S as by lthe screws 11 at either end thereof and a second outwardly extending side i3 which projects outwardly from 'the sash S. It is to be noted lthat the Lshaped supports 14 can be mounted at either end of the mounting plate as shown `and spot welded thereto as at l5, if desired, to reinforce the mounting plate lil. However, in the event that heavier gage material is employed in the l..shaped mounting plate l0, then the `brackets ld can be dispensed with; Kin the event that the plate 1t) is dispensed with, the L-shaped supports 14 can be used to mount the device on the sash S.

Looped supports or brackets lo are spot welded to the supports 1.4 or the side i3 of the bracket 10 at either end of the device and it is to be noted that these looped brackets depend downwardly and are equipped with a key-hole slot for receiving the head ot the bolt lil therein. and that the paired stepped arms 2li land 2l are connected `to the looped supports 16 and 16A as by the bolt 13 and nut 22 with the spring 23 disposed between the nut 22 and the top portion of a member 24 attached to the legs or arms 21 so as to urge the top of portion 24 of the arms 2t) and 21 into spring pressed contact with. the bottom portion 18A or the side portion LSB of the looped. brackets or supports 18. The legs Ztl and 2l are equipped with inwardly bent ears 27 and 28 for aligning the legs or arms 20 and 2l in the plane of lthe looped lsupports lo and relative to the supporting plate itil and the sash Due to the fact that the lees or arms 2li and 2l Iare spring pressed against the flat portions lSA or liB of the looped brackets lid, -it can be seen that they are spring biased and held in the positions of Figs. 2, 3, 4, and 5. Due to the spring pressure avainst the flat surfaces the anne 2d and 21 will remain in place in the manually located position.

The `stepped arms 2li and 2l, are substantially l. -shaped in cross-section with each leg being stepped progressively outwardly-downwardly to provide paired staggered spaced supporting steps 3l, 32, 33, 34, and 35 on the outside portion of the U-shaped cross-sectional portion itl of the arms 29 and 21 and 'stepped portions 3M., 32A, 33A, 34A, and 35A on the inside cross-sectional portion 4l of the U-shaped arms 2t) and 2l and it is to be further noted that the outwardly downwardly progressively stepped portions Iare in turn staggered and olset from one another to provide inclined or canted support points such as seen in Figs. 6 and 7 The louver strips 5l, 52, 53, 54, and 55 are equipped with increasingly graduated size apertures respectively from top to bottom such as designated in Fig. l as 51A, 52A, 53A, 54A, and 55A and it is 'to be noted that these apertures are graded in `size from top to bottom on an increasingly large scale and that the larger apertures bypass the smaller steps and slide down the arms Ztl and 21 until they engage their predetermined and designated proper steps or support points on the arms 2d and and due to `the fact that the support points on the arms 2@ and 2l are inclined outwardly, downwardly relative to one another, the louver strips also incline outwardly and downwardly to provide the proper screening and shading characteristics. The L-shaped cover member dit is equipped with a top side 6l which is secured to the second leg i3 of the support or plate l@ by sheet metal screws `so as to be readily removable therefrom and a downwardly depending second leg 62 for covering the storage area of the louver strips, arms and 21, and looped brackets lid.

Considered in the operation of the device, the user moves the arms 2d and 2l from the position as seen in Fig. 5 to the position as seen in Fig. 2 and then allows the louver elements Si and 56 drop down `on the arms 2d and 2li so that they will selfposition themselves on the staggered canted steps as in Fig, l.

Considering that the device is in the position of Fig. l, the user elevates the louver strips 51 through 55 to the position of Fig. and then moves the arms 2@ and 121i `to the position seen in Fig. l and Fig. 5 whereby `they lock the iouver strips in position underneath the cover member 6i? where they are protected from the weather and screened from View.

lt is to Vbe noted that the arm members 29 and 2l can be removed from the looped brackets 16 by moving the head of the bolt 1S up to the aperture of the key-hole slot whereby the 'head of the bolt will move out of the looped bracket so that all the elements can be removed land cleaned, repaired, painted, or replaced. To remount the legs 2@ and 2l on the looped bracket lr6 it is only necessary to place a tool or the users thumb against the bottom of the screw and force the screw through the slot 17 and then slide the head of the Vscrew into the slot por tion of the looped bracset 16.

ln addition to the means shown, it `is obvious that mechanically equivalent means can be employed within the perview of the invention so as to come within the scope of the appended claims.

The invention with the above described features constitutes a compact, durable, neat appearing mechanism easy to install, repair', and use while at the same time constituting an inexpensively manufactured item and an 4attractive home addition which is extremely useful.

Although but a single embodiment of the invention has been shown and described in detail, it is obvious that many changes may be made in the size, shape, detail, and arrangements and the various elements in the invention within the scope of the appended claims. For example various parts shown separate in the drawings and description can be combined such as the plates 10 and 60 as by using a U-shapcd channel member. It is also obvious that `a spring pressed detent mechanism can be employed lt0 locate the arms in the vertical and horizontal positions.

I claim:

1. A window ventilator unit for mounting on the bottom cross piece of a window sash comprising a mounting plate substantially inverted L-shaped in cross section adapted to have the rst side thereof attached to the sash bott-om cross piece such as by a screw adjacent either end thereof and the second side thereof to extend outwardly of the Sash over the rst side; looped brackets depending from said plate second side adjacent either end thereof, paired stepped arms swingably connected to said looped brackets movable thereon from a vertical to a horizontal position 'and vice versa, springs disposed between said brackets and said arms displaceably biasing said brackets in both the vertical and horizontal positions; said arms being substantially U-shaped in. cross section with each thereof being stepped supports; said paired supports bezug ott-se" rom one another to provide inclined support points; louver strips on said arms having increasingly graduated size apertures from top to bottom so as to selectively engage said arm strip inclined support points so to equally space said strips from top to bottom and said arms at an outwardly declining angle, and a substantialiy L-shape cover member having its iirst side overlying `and attached to said support second side and its second side opening ldepending downwardly over said looped brackets; said strips being upwardly manually movable under said cover second side and said arms manuali'y swingably movable to their horizontal `spring pressed position to lock said strips and themselves behind said cover second side.

2. A Window ventilator unit for mounting on the cross piece of a Window sash comprising paired mounting brackets attached to a sash Iadjacent either end thereof having a portion extending outwardly therefrom, paired looped brackets 'having key-hole slots depending from said mounting brackets, outwardly stepped supporting arms swingably att-ached to said looped brackets from a vertical position to a horizontal position and vvice versa,

louver strips having apertures for receiving said looped brackets `and said arms; said strip apertures being graduated in size to izo-operate with seid arm steps so as to be self-positioning when said arms are in the vertical position; said strips being loca't-able in the area of said looped brackets so that said arms iock said strips in that area when said arms are moved to the horizontal position.

3. A window ventilator comprising `support brackets for securing the device to a window sash, extending portions on said brackets, depending portions on said extending portions, arms pivotally mounted on said depending por tions ladapted to pivot between vertical and horizontal positions, step portions on said arms, and louver strips disposed on said depending portions and said arms via apertures in said louvers; said louver apertures being of progressively increased size to `co-operate with said arm strip step portion to properly locate said louver strips when said arms are disposed vertically; said louver strips being secured in the area of said depending portions by pivoting said arms to their horizontal position.

4. In a device as set forth in claim 3, springs biasing said arms into their horizontal position.

5. In a device as set forth in claim 3, springs 'biasing said arms in both their vertical and horizontal positions.

6. In a device as set forth in claim 3, an attaching plate interconnecting with said support brackets.

7. In a ydevice as set forth in claim 3, a cover member extending over the top area of said brackets over the outside area of said lbracket depending portions so as to conceal and protect said brackets, arms, and louver strips when said arms are in `their horizontal position.

References Cited in the le of this patent UNITED STATES PATENTS 993,654 Conant May 30, 1911 1,552,612 Kelley Sept. 8, 1925 2,470,433 Davis May 17, 1949

Images