US1445375A

US1445375A - Expansible window screen

Info

Publication number: US1445375A
Application number: US269770A
Authority: US
Inventors: Duff H Wertz
Original assignee: VIOLA M WERTZ
Current assignee: VIOLA M WERTZ
Priority date: 1919-01-06
Filing date: 1919-01-06
Publication date: 1923-02-13
Anticipated expiration: 1940-02-13

Description

Feb. 13., 1923.

D. H. WERTZ.

- EXPANSIBLE wmnow SCREEN.

FILED JAN-6,1919.

Patented Feb. 13, i923.

- entree DUFF BI. WERTZ, OF ST. LOUIS, MISSOURI, ASSIGNOR TO VIOLA. ld.

"Lao has n 'WEH'I'Z, OF ST.

LOUIS, MISSOURI.

EXPANSIBLE iFJIN'DO VJ' SCREEN.

Application filed January 6. 1919.

Z 0 ((2! 7.0713077} it may concern Be it known that l. DUFF H. V/nnrz, a citizen of the United States. and residing at St. Louis, Missouri, and useful Window 9 a specification.

. This invention relates to window screens of the type contemplating the use of a metal frame having screen fabric secured therein.

1m provement in i lx iansible and more particularly to window screens of the expansible type.

In metal screens of the expansible type as heretofore constructed, diilicultv has been experienced in securing a firm and close joint between the screen sections and more particularly the fabric of the cooperating sections. Difficulty has also been experi enced in securing a firm and rigid structure unless the frames were made heavy and therefore costly.

Some of the objects of this invention, therefore, are to provide an expansible window screen in which the screen fabric is so secured in the metal frames, in which. the metal frames are so constructed, and in which the sections are so joined as to secure close joints, so as to secure a rigid structure with minimum weight of material, so as to secure efficient sliding engagement between the frames and so as to produce a structure which is simple in construction, effective in its action and cheap to manufacture.

Further objects will appear from the detail description taken in connection with the accompanying drawing, in which:

Figure l is an elevation of a screen embodying this invention. showing the same applied for use;

Figure 2 is an enlarged section on the line 22, Figure 1';

Figure 3 is an enlarged section on the line 3, Figure l;

Figure 4 is an enlarged detail, showing the means and method employed. for securing the screen fabric in the frame;

Figures 5 and 6 are details of one of the screen frame corners, showing-the joint connecting a stile and a rail, the views being om opposite sides and Figure 6 showing the screen clamping element removed; and

Figure 7 is a detail of another corner of the screen, showing the metal binding applied to the inside edge.

Referring to the accompanying drawing,

have, invented the new creens. of which the following is Serial No. 269,770.

fl. designates window frame adapted to receiye a screen embodying this invention. This frame may he provided with screen {'ll.2(lfrf i of metal or any other suitable material.

The screen comprises a pair of frames in each. of which secured the screen fabric. Each frame comprises a stile 3 and a pair of rails l The stile and rails consist of a bodv 5 of sheet metal in channel form, having concave flanges presenting inside convert surfaces as shown in Figure l. The stile and rails are miter-ed to form joints and arranged inside of and. connecting the stile and rails at the corner is an angular plate 7 which issecured to both pieces by riveting. soldering or welding; so to make a firm and. rigid connection. Cooperating with the stile and rails are clamping elements 8 also of sheet metal, which have concave flanges 9 and which clampingelement'is arranged to be inserted in the channel formed by the body and flanges of the stile or rails. The screen fabric 10 adapted to be secured in the frame thus formed by being clan'iped between the inner flanges 6 and 9 of the body and clamping elements 5 and. 8, substantially shown and described in Patent No. 1,279,625, granted September 1918.

It will be noted that there no stile at the inner end of the frame. There is, however, provided for the screen fabric a binding ll. which may he formed of sheet metal bent over the inner edge of the screen fabric as shown in Figure 7, and this binding may have a short lug 12 extending between the body and the clamping element, as the flange of the clamping element may be cut awl'v at that point. This provides a firm binding and also to some extent a support coni'iectinu the inner ends of the. rails. h

In order to secure close cooperation between. the screen frames and more particularly'the fabric therein. the fabric should be secured in the screen frames at the adjoin ing faces of the 'fl'ttlHGS. in order to secure sliding engagement between the screen frames. the rails have sliding connections. In order to provide such sliding connections, the clamping elements 8 for the rails are formed to provide a rib on the element of one rail cooperating with a groove in the element of the opposite rail. For this purpose. the clamping element 8 of one rail is formed to provide a depression 13 in which permit rees pe et en f th cr e th le have s ired thereto finger pieces 15.

It will, therefore, be seen that the invention accomphshes its ob ects. The frames are secured together for sliding movement by connections made thiongh the ClitIIlPlIlQ elements, thereby bringing the ad o n ng faces of the screen fabric secured by the clamping elements into close engagement. Furthermore, the construction of each frame is such as to present a rigid, lint light structure. 7

It is obvious that various changes may be made in the details construction without departing fromtbe spirit of this invention. it is, therefore, to be understood that this invention is not to be limited to the specific details shown and described.

H vin t us d scri th n enti n, w et is claimed is:

3 a pensibl Win w e n, c mp is ng, Pair f met iteme Of h nne sect on hav ng screen fabric secured therein at the inside edges thereof, in order to present the fabric at the adjoining faces of said frames, and sliding connections between said frames at and along said d'iein e a a pte t P m expensidn thereof and maintain the fabric in the frames in surface contact.

A11 nm Windo r en cemr i ing, a pair of metal frames having clamping elements adapted to secure the screen fabric to the frames at their adjoining faces, and a rib on one of said elements engaging a groove in the other,adapted to permit expansion thereof and to maintain the fabric .in the frames in surface contact.

3. An expansible window screen, comprising, a pair of metal frames, means for securing screen fabric in said frames adapted to present said fabric t the adjoining faces of said frames, and sliding connections be tween said securing means adapted to maintain the fabric in said frames in sliding surface contact as the screen is expanded and contracted.

d. in espansible window screen, coi'n ing, a pair-of metal. frames, means for sec-ormg screen fabric in said frames adapted to present said fabric at the "adjoining faces of said frames, and sliding connections between said securing H meaiis and arranged w thin said frames ada I )ted to maintain the fabric in said frames in sliding snrface contaL-t as the screen is expanded and contract d.

1 in enpansib le window screen, comprising; a pairof metal frames, means for securing screen fabric in said frames adapted to present said fabric at the acjoi'ning faces of said frames, and sliding connections between said securing means" adapted to maintain fabric iii said frames in slidinn s n-fa e contact as the screen is er ipanded ad contracted, the outer faces of said fr mes being formed to provide gi ides.

In testimony whereof I affix my signature this 7th day of December, 1-918.-

DUFF n. WERTZ.