US2092673A - Window ventilator - Google Patents

Description

Sept. 7, 1937. s. s. KEMPF I WINDOW VENTILATOR Filed June 26, 1935 Patented seps- ,1, x 1937 OFFICE wnvnow VENTILATOR- Steven S. Kempf, Chicago, Ill, Application June 26, 1935, Serial No. 28,542

2 Claims.

My invention relates to window screens, and my main object is to provide a screen which combines the features of a ventilator, fly screen and protector against rain and wind.

A further object of the invention is to build the novel screen in a self-contained unit of a compact nature, whereby to be easy to handle.

A still further object of the invention is to utilize the transparent property of glass or similar material for the ventilating feature of the screen, so that a maximum amount oflight is admitted. v Another feature. of the invention is to construct the same along lines of utmost simplicity, and ready adaptability to conventional window installations.

With the above objectsin view, and any others which may suggest themselves from the description to follow, a better understanding ofthe invention may be gained by reference to the accompanying drawing, in whichi Figure 1 is an external elevation of the novel screen;

Figure 2 is an internal elevation thereof;

Figure 3 is an enlarged fragmentalsection on 6-6 of Fig. 5.

the back or inner side of the frame instead of.

to the outer side thereof as is the usual practice.

The ventilator feature of the novel screen is disposed frontally of the netting H in the form of'a series of oblique visor-type vanes 113 of glass or other transparent material. These vanes occur in vertically spaced order, and are of an angle approximately as shown in Fig. 3, so that they overlap, whereby to permit air to enter but check cross-drafts.

The vanes iii are of the same angle and so mounted as to maintain their positions permanently and be held against sliding out of the frame. Thus, the side rails of the frame Ill are grooved as indicated at lfla to seat the terminal ."portions of the vanes". As noted in Fi 4, the ends of the vanes converge in an outward direction, and the grooves lfla are formed to' suit, so that when the vanes have been inserted into the frame from the rear, they cannot advance beyond their proper position as indicated in Fig. 4. The vanes are thus supported and locked in position without the use of a special fastening means. Fig. 4 shows that the netting l2 and molding frame ll form a check for the recession of the vanes.

While my main embodiment employs a series of fixed ventilator vanes. it is conceivable that a modification can be designed to make the vanes foldable or adjustable, as in Venetian blinds. Thus, a specimen of such a modification is suggested in Figs. 5 .and 6, it being noted that the vanes are mounted between pairs of disks II, the latter having trunnions Ha journaled in the screen frame. A wire rod IS in back of the screen makes connections l5a with each of the disks, so that when the rod is lowered, the vanes swing up, and vice-versa. As mentioned, the illustration is but for purposes of example, since other methods may be devised to put the principle in practise.

It will be seen from the above description that I have provided a self-contained screen which has several advantages. First, it utilizes the conventional full sized fly-netting for complete pro-v tection against insects. Second, it has a set of visor-like ventilator vanes to permit ventilation without drafts and imparting an attractive appearance tothe screen. Third, the ventilator vanes are transparent, and therefore permit complete passage of light and ventilation, while ofi'ering full protection against the entry of rain, snow, hail or dust. Fourth, the article is simply built, easily handled and capable of being applied to the conventional window installation by any of the methods now in use. When the novel screen is of greater than ordinary width, I propose to relieve the strain at the center of the ventilator vanes by inserting a vertical support or brace may also extend in shorter form as a window in- 1. A window ventilator comprising an open frame, and a set of visor-type vanes'mounted therein in vertically-spaced order, the vanes and frame having cooperative formations to wedge the vanes in the sides of the frame'whenthe vanes are inserted therein 2. A window ventilator comprising an open frame formed with a vertically-spaced series of .1 grooves on the inner side of eeeh nae piece, botu series of grooves oonvemingfmm one face of the frame to. the other, end a set ofvisor-type mes arranged to seat endwise in pairs of the grooves, the ends of the vanes being convergent to become wedged in the women.

STEVEN S. KEMP!

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