US2507171A

US2507171A - Automatic ventilator screen

Info

Publication number: US2507171A
Application number: US652897A
Authority: US
Inventors: Charles A Morten
Original assignee: Individual
Current assignee: Individual
Priority date: 1946-03-06
Filing date: 1946-03-06
Publication date: 1950-05-09
Anticipated expiration: 1967-05-09

Description

patente& May 9, 195

UNITED STATES i &507.171 A AUTOMATIC VENTILATOR seaman Cha les A: Mar termi; ;Selin Substituted for ap lication Serial No. 318,-535?, February 12, 1940. This prisnim-Menus, 1946, Serial No. 652,897 i Llai n. (c. 160490 This application is a substitute for abandoned application Serial Number 318,537, filed February 12, 1940.

My invention relates to a ventilator screen.

An object of my invention is to provide an automatic ventilator screen which normally is in fixed position when a window is raised.

A further object of my invention is to provide a ventilator screen which can be released from position as desired.

A further object of my invention is to provide a ventilator screen which automatically rolls up within a suitable container.

A further object of my invention is to provide an automatic ventilator screen which automatically engages in closed position when the window to which it is attached is lowered.

A further object of my invention is to provide a ventilator screen which is automatically controlled for desired positions and which can be manufactured at a simple cost. i

With these and other objects in View, my invention consists in the Construction, arrangement and combination of the various parts of my device, whereby the objects contemplated are attained, as hereinafter more fully set forth pointed out in my claims, and illustrated in the accompanying drawings, in which:

Figure 1 is a front elevation of a window using my type of screen,

Figure 2 is a sectional View taken along the medial line thereof,

Figure 3 is an enlarged sectional detail, and

Figure 4 is a further detail.

I have used the character IE! to designate the side members of a standard window having the top member Il and the bottom member l2. The windows l3 and 14 are attached in the usual manner to the top members |5 and !6, the side members I'I and the bottom members a and !9. Attached to the lower member [8 of the window l3 is the casing 19 which is formed with an upwardly extending flange 20 to provide attachment by means of the screws 2| to such member.

A roller 22 is suitably journaled within the side members 23 of the casing and the roller 22 includes a suitable torsional spring therein which spring has the tendeney of maintaining a constant tension against the roller. Wound about the roller 22 is a fabric screen 24 which is of a comparatively fine mesh.

The sash sides are guided between the

vertical side strips

25, 26 and 21. Attached at the lower end of the medial strip 26 are the spring clips 28 which are attached at 29 thereto,

' ly bent portions 29a of the clips 28 are formed The outward- 66 with the bevelled portion 30 which terminates in a lip 31. A pair of metal retaining members 32 are attached to the lower ends of the fabric screen 24 at 33 and include outwardly extending portions 54 which merge into bent lips 35 which lips are adapted to be received under the bevelled portion 30 and adjacent the lip 3l (see Figures 3 and 4). Depending from the lower edge 36 (see Figure 4) of the fabric screen 24 is a further folded fabric member 31 which includes a suitable bar 38 therein to provide a comparatively tight closure when the screen 24 is in the closed position.

A further stiffening member such as 39 is provided adjacent the lower edge 36 to provide rigidity across the screen. The member 39 is inserted within the fabric which is folded over the same and then stitched. The device operates as follows:

Normally the lips 35 are engaged beneath the portions 30 of the members 28. When the inner window !3 is raised the fabric screen 24 will be unrolled from the roller 22 under spring tension which will maintain the screen in stretched condition. The window can be raised to any desired height and in this manner a draft-proof screen is provided which prevents entrance of strong drafts and the like and yet allows for suflicient circulation of air through the window opening.

If it is desired to raise the fabric screen 24 after the window has been elevated all that is necessary is to pull down slightly on the lower edge 36 or the portion 31 which releases the lips 35 from under the bevelled portions 30 and the screen is allowed to fly upwardly within the casing IS. The members 34, however, will always be in vertical position within the casing and if the window is then lowered, the lips 35 will snap beneath the portions 30 of the spring members, 28 so that by merely closing the window l3, the fabric screen will be retained at the bottom end thereof and the window can then be raised again leaving the fabric screen in place as shown in Figure 3.

This action occurs principally because the lips 35 will be wedged between the outwardly bent portions 29a of the members 28 thereby springing the portions 29a apart and then allowing the lips 35 to snap under the bevelled portion as explained. This arrangement thereby provides for an automatic control of the draft screen without the necessity of pulling the same down and attaching and as explained all that is necessary is to lower the window and then to raise the same again. A strip such as 40 can be attached to the portion I 6 of ,the window to provide a filler and other types of filling mediums can be employed if such is desired.

It will now be seen that I have provided a ventilator screen which is placed in fixed position automatically through one operation of a window, which can be rolled up within a suitable container, which automatically engages in closed position, which provides a convenient ventilator screen, which can' be used either in raised or closed position for any season, and which can be manufactured at a reasonable cost.

Some changes may be made in the construction and arrangement of the parts of myinventon without departing from the real -spirit and purpose of my invention, and it is my intention to cover by my claim any modifiedorms of structure or use of mechanical equivalents, which may be reasonably included within its scope.

I claim as my invention:

In a window frame provided with a sliding sash,

the combination of a screen roll attached to said sash. a pair of clips having resilient outwardly bent portions secured at opposite sides of the frame, said clips being provided with beveled lower edges, and the lower edge of the screen having a pair of lips with bent extremities attached thereto at opposite sides of the screen for automatic engagement with the clips when the sash is lowered.

CHARLES A. MORTEN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 611324 Monroe Oct. 4, 1898 917.562 Dowd Apr. 6, 1909