US1800804A - Ventilating guard for windows - Google Patents

Description

April 14, 1931. T. J. NELSON 1,300,804

VENTILATING GUARD FOR WINDQWS Filed June 24, 1929 //v VEN TOE 7745000122] NELSON.

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Patented Apr. 14, 1931 UNITED STATES Lsoasru THEODORE J". NELSON, OF CHICAGO, ILLINOIS, ASSIG-NOR ILLINOIS VENTILA'IING GUARD FOR :WINIDOWS Application filed. June 24,

My invention relates to an improved construction of ventilating guard for windows, for example of the kind using sliding sash, so that the guard when in use will permit the opening 01? the sash to a limited extent, and prevent opening the sash beyond that amount, to the end that ventilation may be secured without permitting the window to be opened far enough to permit a person to enter the building through the window.

My invention consists of a construction which is simple in nature, easy to operate, inexpensive to manufacture, and yet at the same time eiiective in use. 1

My invention will best be understood by reference to the accompanying drawings showing a preferred embodiment thereof, in which Fig. 1 illustrates a part of a pair of sliding sash in perspective view with my ventilating guard in the position it occupies to limit the opening of the sash, and

Fig. 2 shows in a view similar to Fig. 1, my guard in the position it assumes when it is desired to permit the sash to be opened to their full extent.

Similar numerals refer to similar, parts throughout the several views.

As shown in the drawings, I illustrate a part of a window frame at and show cooperating with the window frame, parts of upper and lower sash at 11 and 12.v My ventilating guard consists of a metal mounting plate 13, preferably of sheet metal, secured to one of the sash, for example the sash 11,

which is the upper sash, by screws lei as indicated.

The inwardly extending end of the plate 13, is rolled or wrapped into an eye or bearing 13a through which one member 15a oi the stopping device, extends. The member 15a is preferably cylindrical and of suitable metal, for example a round iron or steel rod, and is bent at substantially a right angle to 3 form a stop in member 15?) extendin horizontally to project into the pathof the lower sash when in its stopping position shown in Fig. 1, or to lie in the space adjacent the glass 16 of the upper sash when it is not desired to use the guard. The upper end of the verti- 1929. Serial N0. 373,179.

cal portion 15a has rigidly secured to it, a disk "or head 17 between which and the upperedge of the eye 13a, a spring. 18 is disposed, whichtends to raise the member 15a as far as the plate 13 and its eye13a-will permit. The plate 13 has formed in its notch 19 which is in line with the eye 13a, so that when the member15b is in its stopping position indicated in Fig. 1, it will rest in said notch, being moved into said notch by the actionof the spring 18; For thisrelation oftheparts, the stopping member 1512 not only prevents raising the lower sash 12 beyond the predetermined amount permitted by the location of the plate 13 on the upper sash 11, but in addition, rotation of the stopping member 156 from itsstopping position is prevented by its engagement with the notch 19 This permits opening the window, either by raising the lower sash, or lowering the upper sash, sulliciently for purposes of ventilation, and yet permits restricting the amount ofthis opening so that intrusion through the open window is impossible.

To move the stopping member 156 to its releasing position, the head 17 is'depressed against the action of the spring 18, to release the stopping member from the notch 19, and

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said member is then turned to its position indicated in Fig. 2, in which position the tension of the spring 18 serves to retain it against accidental turning movement due to jarring or rattling of the sash to which it is secured.

It will be observed that the construction described is of extreme simplicity, consisting as it does of but three parts, namely the supporting plate, the bent stopping member and the spring. It will further be observed that the plate and stopping member may be easily formed by simple tools, that the amount of material required in constructing the ventilating guard is small and that therefore the manufacturing cost is low. This is a marked advantage particularly where many windows require protection of the kind afforded by my device.

While I have shown my invention in the particular embodiment above described, it will be understood that I do not limit myself to this exact construction as I may employ equivalents known to the art at the time of the filing of this application without departing from the scope of the appended claims.

What I claim is:

1. In a ventilating guard for windows, the combination of a mounting plate of metal having an eye, a bent metal rod having a first portion movable angularly and longitudinally in said eye and a second portion pro- 7 I jecting to constitute a stopping member, the Wall of said eye having a notch through it to receive said rod in its stopping position to restrain said rod from angular movement in said eye, and a spring tending to hold said rod in said notch.

2-. A ventilating guard comprising a metal mounting plate having a bearing, a bent metal rod having; a first portion in said bearing for movement therein and a second portion extending at substantially a right angle to said first portion, and'a spring around said first portion holding said second portion against said plate; V

In Witness whereof, I hereunto subscribe my name this 10th day of June, A. D. 1929.

THEODORE J. NELSON.

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