US2762644A

US2762644A - Window guard

Info

Publication number: US2762644A
Authority: US
Inventors: Victor P Polos
Original assignee: Individual
Current assignee: Individual
Priority date: 1954-06-10
Filing date: 1954-06-10
Publication date: 1956-09-11
Anticipated expiration: 1973-09-11

Description

Pt- 1956 v. P. POLOS WINDOW GUARD Filed June 10, 1954 Victor I? Po/os INVENTOR.

United States Patent WINDOW GUARD Victor P. Polos, Dallas, Tex.

Application June 10, -1954, Serial No. 435,814

1 Claim. (Cl. 292-288) The present invention relates to a guard attachment for window sashes to positively limit the opening movement of one sash with respect to a second sash.

More particularly, the invention is' directed to a window construction wherein a pair of sashes are mounted in offset, parallel planes with at least one of the sashes being slidable relative to the other for opening and closing movement.

The primary object of the invention is to provide a guard for window constructions of the type set forth above which will positively limit the opening movement of the movable sash to prevent housebreaking, theft or burglary.

A very important object of the invention is in the provision of a sash guard which is quickly and simply removable from the window to permit full opening movement of the sashes with respect to one another if both are movable, or to permit full opening movement of the movable sash if only one is movable.

Another important object of the invention is in the provision of a guard attachment which provides a novel, unyielding structure capable of withstanding great force without buckling and which is exceedingly economical of manufacture and which necessitates a minimum of skill in its application.

These together with other objects and advantages which will become subsequently apparent reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming a part hereof, wherein like numerals refer to like parts throughout, and in which:

Figure 1 is a side elevational view in cross-section of a window construction with the sash guard mounted on the sash in its operative position;

Figure 2 is an enlarged, front elevational detail view of the sash guard setting forth the manner in which it is mounted on the sash;

Figure 3 is an enlarged front elevational detail view of the mounting plate constituting a portion of the sash guard mounted on the sash;

Figure 4 is a cross-sectional view taken substantially along the plane of section line 4-4 of Figure 3;

Figure 5 is a front perspective view of the striker plate constituting a portion of the sash guard; and

Figure 6 is a rear perspective view of the striker plate.

In Figure 1 is shown in cross-section the side elevational view of a window frame construction 10 including a window frame 12 having a window sill 14. Within the frame 12 are vertically slidably mounted, in vertically offset parallel planes, upper and

lower sashes

16 and 18, respectively.

The

sashes

16 and 18 are substantially rectangular in shape, each including top member 20, side members 22 and bottom member 24.

The guard attachment constituting the present invention is secured to one of the side members 22 of the upper sash 16 intermediate the top and bottom thereof, and is designated in its entirety by the numeral 26.

The guard attachment comprises two members, a

"ice

mounting plate 28 secured to the side member 22 of the upper sash 16 and a striker plate 30 removably attached to the mounting plate 28 for striking the top member 20 of the lower sash 18 when the lower sash is raised to opening position of predetermined amount to limit further opening movement thereof.

In mounting the mounting plate 28, the side member 22 of the upper sash 16 upon which this plate is mounted is provided with a recessed portion 32. The mounting plate 28 is mounted on the sash member 22 in covering relation to the recessed portion 32, being provided with a keyhole slot 34 opening into the recessed portion 32. Suitable fastening elements 36 secure the mounting plate in place on the side member 22.

The striker plate 30 consists of an L-shaped member having first and second flat, right angularly

related legs

38 and 40, respectively.

Projecting from the rear face of the first leg 38 intermediate the side edges thereof and adjacent the upper end thereof is a key 41 corresponding to the shape of the keyhole slot 34 in the mounting plate 28.

To mount the striker plate 30, it is placed in the position shown in Figure 2, wherein the key 41 fits within the keyhole slot 34. Then, the plate 30 is swung downwardly to a position wherein the leg 38 lies fiat against the mounting plate 28 and is disposed vertically. When in this position, the second leg 40 of the striker plate extends perpendicularly from the plane of the upper sash l6 and engages the top member 20 of the lower sash when the lower sash is opened, thereby limiting the opening movement of the lower sash.

In order to stiffen and strengthen the striker plate 30 against buckling, the first leg 38 depends below the bottom of the second leg 40, forming a downwardly depending lip 42 below the second leg 40.

Top member 20 of the lower sash 18 is formed with an upwardly opening notch or groove 44 at the rear edge thereof within which the lip 42 seats to prevent buckling of the plate should an attempt be made to raise the lower sash beyond the limit fixed by its abutment with the guard attachment 26.

When it is not desired to use the guard attachment, it is only necessary to twist the striker plate 30 to align the key 41 with the keyhole slot 34, as shown in Figure 2, and remove the striker plate from the mounting plate 28. When the striker plate 30 is so removed, the lower sash 18 may be moved to its full open position.

From the foregoing, the construction and operation of the device will be readily understood and further explanation is believed to be unnecessary. However, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction shown and described, and accordingly, all suitable modifications and equivalents may be resorted to, falling within the scope of the appended claim.

What is claimed as new is as follows:

A device for limiting opening of windows comprising an attaching plate attachable in vertical position to a vertically slidable upper window sash and provided with a horizontal slot therein, a striker plate having right angled legs, an elongated key on one of said legs insertable through said slot to position the same behind said attaching plate, said striker plate being rotatable on said key when inserted about an axis transverse to said attaching plate to position its other leg across a lower vertically slidable window sash and to rotate said key crosswise of said slot to secure said plates together.

References Cited in the file of this patent UNITED STATES PATENTS 1,129,572 Jephsen Feb. 23, 1915