US728121A - Window-screen. - Google Patents

Description

l PATBNTBD MAY 12, 1903. ELL. LLOYD. WINDOW SCREEN. APPLIoATIoN FILED SEPT. 1o. 1902 2 snBn'Ts-SHBBT 1.

No MODEL.

ma Ncmms PETERS e0. Pnmounm. wAsmncroN, o cv PATBNTBD MAY I2; 1903;;

E. L. LLQYD. WINDOW SCREEN..

' APPLICATION FILED SEPT. 10, 1902.

no MODEL.

Patented I VIay 12, 1903.

PATENT OFFICE.

EDWIN L. LLOYD, OF PHILADELPHIA, PENNSYLVANIA.

WINDOW-SCREEN.

SPECIFIATION forming part of Letters Patent No. 728,121, dated May 12, 1903. Application filed September 10, 1902. Serial No. 122,840. I (No model.)

To all whom it may concern:

Be it known that I, EDWIN L. LLOYD, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in VVindow-Screens, of which the following is a speciicati-on.

My invention relates to that class of window-screens which are applied to the win dowframe alongside of the sash instead of between the bottom of the sash and the sill, the lower bar of the sash bearing against the face of the top bar of the screen when the sash is raised, so as to form a close joint therewith and prevent the passage of insects between the two.

One object of my invention is to construct .a screen of this class which is applicable to window-frames ot' different Widths, other objects being to rmly guide the adjustable eX- pansion-stripsrof the screen, to render said expansionstrips self-expanding, and to produce a screen which will present a-neat appearance, the netting being wholly unob- -structed and the springs which effect the pro`l jection ofthe expansionv bars or strips being vconcealed from sight and protected from ex- ,posure to the weather.

In the accompanying drawings, Figure 1 is' .a face view, partly in section, of a windowscreen constructedin accordance with my invention. Fig. 2 is a top or plan view of the same, illustrating also .the grooved guides vor .retainers on the windowfframe to which the screen is adapted. Fig. k3 .is a section on the .linea o, Fig. 1. Fig. 4 is an enlarged transverse section on the line I? b, Fig. 1. Fig..5

c c, Fig. 1.

Fig. 7 is a transverse section on the line ld d,

- Fig. e.

. Referring first to the screen shown in Figs. .1 to 5, itwill be noted that the fixed frame -of the screen comprises end bars 1 1, top and 'bottom bars 2 2,.and supplementary top and bottom vbars 2-- 2, and each of the adjustable end framesvof the screen-.comprises an eX- fpansion-strip 3 and guiding joint forming -bars 4 4, secured lto and projecting inwardly from said strip 3 at the top and bottom of the screen. The netting 5 is secured to the bars .l and 2 of the fixed frame, the expansionstrips 3 overlapping `the netting at the ends of the frame, so as to slide freely back and forth'over the same.

The supplementary top and bottom bars 2' of the fixed frame havelongitudinal grooves 6 formed therein for the reception ot' ribs 7 on the bars 4, which bars are in contact with the top and bottom bars 2 of the lfixed frame, as shown in Fig. 1. The inwardly-projecting rib-of each bar 4 has formed in it a longitudinal slot 8 for the reception of a vertical pin 9, carried bythe bar 2, this pin-and-slot connection preventing either the lateral or longitudinal removal of the sliding frames of the screen from the fixed frame of the same and also limiting the extent to which the sliding frames can be projected, contact of the y'inner ends of the top and bottom bars 4 of the sliding frames limiting the approach of inner end against'a' blockul2, secured to the bar 2a of the fixed frame of the screen, 'the springs 11 serving to project the bars 4 and the end strips 3 carried thereby to the full extent permitted by the contact of the pins 9 and blocks 12 with the shoulders at vthe inner ends of the slots 8 and 10.

The screen may be held in position in the window-frame by frictional contact of the end strips 3 with the sides of the window-frame; but it is preferable to provide said windowframe with grooved guide-bars 13 for the reception and guidance of the strips 3, as shown in Fig..2, the top and bottom bars 4 of the sliding frames being in this case cut away at their outer ends, as shown in Figs. 1 and 2, in order to permit the guides to properlyoverlap the strips 3.

,In assembling the parts of the screen the netting is ,first applied tothebars I and 2 of the fixed frame, and the top and bottom'bars 2a are then secured to the bars 2. The springs 11 and blocks 12 are then inserted in the slots 10 of the ribs 47, and said ribsare slidlongitudinally into-the Agrooves .,fof 'the@fears 2a until the inner ends of the bars 4 meet at the center of the screen, the strips 3 being then fully retracted. The blocks 12 are then Secured to the bars 2a, preferably by nails or pins 14, and the pins 9 are inserted in proper position for restricting the expansion of the sliding frames of the screen by contact with the shoulders at the inner ends of the slot 8. The assembling of the parts ofthe screen can thus be quickly effected without the employment of skilled labor, thereby reducing the cost of this element of manufacture.

It' the ribs 7 of the bars 4: are beveled or undercut, the use of the pins 9 and slots 8 can be dispensed with, the projection of the end strips 3 being limited by contaetpf the shoulders at the inner ends of the slots 10 with the blocks 12 or with the pins 14c when said block is not used. In some cases the screen can be made with an expansion-strip at one end only; but the construction shown is preferred.

The screen presents a very neat appearance, the netting is unobstructed throughout the entire area of the screen, and the various springs which effect the expansion of the movable elements ofthe screen-frame and the stops for limiting such expansion are hidden from View and protected from access, so that they cannot be tampered with by ignorant or mischievous persons or injured by exposure to the weather. The screen, moreover, is strong and durable, the long top and bottom bars 4 of the movable members of the screenframe providing an efficient support for said movable members ofthe frame upon the xed frame, whereby the expansion-strips 3 at the ends of the screen are firmly guided in their movements and cannot be warped or twisted out of their proper position. Hence the free sliding movement of these expansion-bars is never interfered with.

When the screen is applied to the windowframe, the bars 2 and 4: at the top of the frame bear against the lower rail of the sash, as shown in Fig. 4, the bars 2 bridging the gap between the separated inner ends ot' the bars i and said bars 4 lling the space between the rail of the sash and the expansion-strips 3, Where the latter are projected beyond the bars l of the fixed frame at the ends of the screen, a close joint being thus produced and the passage of insects between the sash-frame and the bars of the screen etectually prevented.

In that embodiment of my invention shown in Figs. 6 and 7 a wire 4:3 is used in place of the bar 4*, this wire 4E being secured to the end strip 3 and adapted to a groove 6, formed in the bar 2 of the fixed frame. A spring ll, contained in the groove, acts upon a lug l5, projecting from the wire, and thus serves to project the end strip 3.

Having thus described my invention, I

claim and desire to secure by Letters Pat- 1. The combination of the fixed frame of the screen having a bar with a groove in one of its side faces and an expansion end strip having aguiding and jointformingbaradapted to said groove and fiush with that face of the screen-frame bar in which the groove is formed, substantially as specified.

2. The combination of the fixed frame of the screen having a bar with a groove in one of its side faces, an expansion end strip having a guiding and joint-forming bar adapted to said groove and fiush with that face of the screen-frame bar in which tbegroove is formed, and a spring acting upon said guidebar so as to project the end strip, substantially as specified.

3. The combination of the iiXed frame of the screen having a bar with a groove in one of its side faces, an expansion end strip having a guiding and joint-forming bar adapted to said groove and flush with that face of the screen-frame bar in which the groove is formed, and a pin-andslot connection between said guide-bar and the bar of the fixed frame whereby the two are laterally confined tgether, substantially as specified.

4. The combination of the fixed frame of the screen having a bar with groove in one of its side faces, the expansion end strip having a guiding and joint-forming bar adapted to said groove and flush with the face of the screen-frame bar in which the groove is formed, said bar having aslot therein, a spring contained in said slot and a bearing for said spring carried by the bar of the fixed frame, substantially as specified.

5. The combination of the fixed frame of the screen having a bar composed of two parts confining the netting between them, one part being less in height than the other and the other part having in its projecting portion a face-groove,an expansion-strip provided with a bar bearing against the face of said projecting bar, and having a projecting rib adapted to the groove therein, said guide-bar being also flush with the face of the other bar of the frame, and means for laterally confining said expansion-strip bar to the bar of the screen-frame, substantially as specified.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

EDWIN L. LLOYD.

Witnesses:

MURRAY C. BOYER, Jos. I-I. KLEIN.

lCO

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