US753932A - Fly-exit for screens. - Google Patents

Description

No. 753,932. PATBNTEfi MAR; *8, "1904.

B. B. STOVER. 4

FLY EXIT FOR SUREENS.

arrmonmn FILED snrw. e, 1902.

NO MODEL.

UNTTED STATES ratented March 8, 1904:.

EMORY ELLSWORTH STOVER, OF BIGELOVV, MINNESOTA.

FLY-EXIT FOR SCREENS.

SPECIFICATION forming part of Letters Patent No. 753,932, dated March 8, 1904.

' Application filed September 6, 1902. Serial No. 122,441. (No model.)

To all whom it may concern:

Be it known that I, EMORY ELLSWORTH STovER, a citizen of the United States, and a resident of Bigelow, Minnesota, have invented .a new and useful Fly-Exit for Screens, of

which the following is a specification.

This invention relates to an improved flyexit for screens designed for use on windows, doors, and the like, and has for its object to provide a simple, inexpensive, and eflicient device of this character which will insure the egress of house-flies or other insects on the inner face of the screen and at the same time eflzlectually prevent their ingress from the outsi e.

The invention consists in the construction and novel combination and arrangement of parts hereinafter fully described, illustrated in the accompanying drawings, and pointed out in the claims hereto appended, it being understood that various changes in form, proportion, and minor details of construction may be resorted to without departing from the spirit or sacrificing any of the advantages of this invention.

In the accompanying drawings, Figure 1 is a perspective View of a Window-screen provided with a fly-exit constructed in accordance with my invention. Fig. 2 is a transverse sectional View of the same; Fig. 3, a perspective view of a portion of the screen with the cap and triangular blocks detached, and Fig. 4 is a perspective view of the cap and triangular blocks.

Similar numerals of reference indicate corresponding parts in all the figures of the drawings.

1 designates a rectangular screen-frame comprising the side bars 2 and top and bottom bars 3 and 4:, the upper portion of the side bars 2 being inclined or beveled, as shown at 5. Secured to the frame in any suitable manner is a sheet of screen material, such as-wire-gauze,

the upper portion of the wire-gauze being bent inwardly, as shown at 6, to conform to the inclination of the side bars and fastened to the top bar-3 by means of a plate 7, which forms one of the side walls of a passage 8 for the exit of the flies or other insects. A pair of substantially triangular blocks 9 are secured in any suitable manner to the inclined ends of the side bars 2, and connecting said blocks is a bar 10, having an inclined or beveled face 11. The bar 10 is spaced from the top of the frame, as shown, to form the passage 8, and secured to the inclined face of the bar is a plate 12, which lies substantially parallel with the plate 7 and forms the opposite side wall of said passage. Secured to the bars 3 and 10 at the top of the frame is a substantially triangular cap 13, closed at its ends, as shown, which forms a chamber 14:, into which flies or other insects crawl after passing through the opening or passage 8. The converging side walls 15 and 16 of the cap 13 are spaced apart at the apex of said cap to form a longitudinal slot or opening 16 to permit egress of the flies from the chamber to the outside or exterior of the building, the side wall 15 being somewhat longer and extending a short distance over and beyond the upper edge of the side wall 16, so as to protect the top of the screen from the elements and also to reflect the light downwardly through the passage 8 to attract the flies.

In operation the'flies or other insects on the inner face of the screen are attracted by the light reflected through the passage 8 from the opening 16 in the cap and crawl upwardly through said passage into the chamber 14, and being unable to return by reason of the contracted mouth of said passage will pass out through the longitudinal opening 16 in the cap.

The plate 7 forms one of the side walls of the passage 8 and also serves to secure the upper edge of the screen to the frame, while the triangular cap not only forms a chamber for the flies, but also acts as a casing or'housing to protect the top of the screen from the elements.

From the foregoing description it will be seen that I have'provided an exceedingly simple and inexpensive fly-exit which may be readily applied to screens already in use, as well as those in course of construction, and by means of which insects crawling on the inner face of the screen are directed to the exterior and their return effectually prevented.

Having thus described the invention, what I claim, and desire to secure by Letters Patent, is V 1. In a fiy-exit for Screens, the combination with a frame, of a sheet of screen material secured thereto and having its upper portion bent inwardly at an angle to the general plane of the screen material, a bar secured to the frame and spaced from the screen to form a passage, and a cap having converging side walls secured to the frame and provided with an opening at its apex.

2. In a fly-exit for screens, the combination with a frame, of a sheet of screen material secured thereto and having its upper portion bent inwardly at an angle to the general plane of the screen material, a bar provided with an upwardly extending plate secured to the frame and spaced from the screen to form a passage, a corresponding plate carried by the frame, and a cap having converging side walls secured to the top of the frame and provided with a longitudinal opening at its apex.

3. In a ii y-exit for screens, the combination with a frame, of asheet of screen material secured thereto and having its upper portion bent inwardly at an angle to the general plane of the screen material, a bar provided with an upwardly extending plate secured to the frame and spaced from the screen to form a passage, a corresponding plate carried by the frame, and a triangular-shaped cap, one of the side walls of which extends above and in advance of the other to form an openin 4. In a fly-exit for screens, the combination with a frame, having its upper portion inclined or beveled, a sheet of screen material secured to the frame and bent to conform to the inclined portion thereof, a bar provided with an upwardly-extending plate secured to the frame and spaced from the screen to form a passage, a corresponding plate secured to the top of the frame and forming a continuation of the screen, and a cap having converging side walls secured to the top of the frame, one of said side walls extending above and in advance of the other to form an openin 5. In a fly-exit for screens, the combination with a frame having its upper portion inclined or beveled, a sheet of screen material secured to the frame and bent to conform to the inclined portion thereof, a pair of triangular blocks secured to the frame, a bar having an inclined or beveled face secured to the blocks and spaced from the frame to form a passage, an upwardly-extending plate secured to the inclined face of the bar, a corresponding plate secured to top of the frame, and serving to secure the top edge of the screen material in position and a cap having converging side walls secured to the frame and provided with a longitudinally-disposed opening at its apex.

EMORY ELLSWORTH STOVER. In presence of- G. M. GLIOK, C. H. GLIoK.

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