US1699402A - Fly-exit screen - Google Patents

Description

Jan. 15, 1929. 1,699,402

J. MARsDEN FLY EXI T S GREEN Filed Jan. 16, 1928 JNVENTOR. Jrem za/z Mans-den LIZ disclosed in Patent No. 1,441,104

Patented Jans E5, 1929.

UNITED STATES FLY-EXIT SCREEN.

Application filed January 16, 1928. Serial h'o. Mill? This invention pertains to a window or door screen attachment, particularly to fly exit devices for window or door screens, and constitutes an improvement on the device issued to applicant on January 2, 1923.

An object of this invention is the provision of a device of this character, whereby the same, when properly secured on a window or door screen, will attract flies thereinto and provide means for enabling said flies to pass to the opposite side of the screen 'with slight probability of returning therethrough.

Another object of the invention is the provision of a device of this character wherein the structure is novel in form, portable, and easily attached or detached to a door or window screen in any desirable position.

A further object. of theinvention is the provision of a device of this character which embodies means for encouraging the egress and discouraging the ingress of flies, which is simple in construction, eflicient in operation and which may be manufactured at low cost.

These and other objects of the inventio will be apparent from a study of the following detailed description taken in connection with the accompanying drawings where- Figure 1 is a perspective View of the invention.

Fi ure 2 is a vertical longitudinal sec-o tiona View takenrentrally through the de-- vice.

Figure 3 is a detail elevation of the exit spout of the device showing a portion of the supporting frame therefor in dotted lines.

- Figure 4 is a fra entar horizontal section showing one o the si es of the device provided with an opening and a closure plug therein. 7

The improved device comprises an inverted substantially V-shaped frame 1 of suitable material such as metal orwood and 1 which the exit spout is mounted, .with a composed of upwardly converging side strips 2 and 3, said side strips'being secured together at their upper ends in any suitable manner such as by use of brads 4, Figure 2. Positioned between and secured to strips 2 and 3 at a point near the lower ends thereof is a cross slat 5 of less width than said side stri s, said cross slat 5 being provided with a c annel 6 for the urpose of receiving a suitable lure such as bait *Z. The cross slat 5 is also provided with abeveled outer ed e as at 6.

ecured to the edges of strips .93 and 3 of the frame 1 are inner and outerreticulated wire mesh fabric sections 8 and 9, the outer section 9 extending from a pointnear the apex of frame 1 to a point remote from the lower end thereof so that the lower edge of section 9 is'in a plane with the horizontal upper face of slat '5. The inner section of fabric 8 extends from the apex of frame 1 to a point flush with the lower end thereof, These wire mesh sections 8 and 9, when secured to frame 1 together with cross slat 5 constitute an ericlosure 10 into which fiies,

lured by bait 7, enter through an opening near the lower end thereof formed by narrow cross slat 5 and the lower edgeof fabric section 9. r

The side strip 2 is provided, at a point above the channel 6 in slat 5, with an opening 11, normally closed by a plug 12. Upon removal of plug 12 access may be had to the interior of enclosure 10, thus permitting the introduction of bait into the channel 6 of cross slat 5. Closure plug 12 prevents the escape/throughopening 11, of any flies that may have entered enclosure 10.

Mounted on one side of frame 1 at a point near the apex thereof is an exit tube or spout 13, preferably of metal, said exit tube consisting of a tapering body portion extending outwardly and upwardly from the frame,

being secured theretoby means of integral ears or flanges l i formed on one end of said tube. The tube 13 opens into enclosure 10 a? ittgsdlower end for a purpose to be presently s a Secured tothe other side of frame 1 and extending from the apex thereof to a point remote from the upper face of cross slat 5 is a shade member 15 of suitable opaque material, the function of which is to render dark that side of the; enclosure opposite the entrance to the exit-spout 13.

The frame lis provided, onthe side upon plurality of outwardly and downwardly extending supporting prongs 16, adapted to engage with the wire mesh of a window or door screen. I

lows

The operation, the invention is as fol- An opening of sufiicient size is formed in v the window or door screen to which the (16- I vice is to be attached and the spout 13 is projected therethrough. The supporting prongs are passed through the mesh of the screen, thus securing the device to said screen. When in this position, flies, alighting on the screen, will be attracted by bait 7 and enter enclosure 10 through the opening formed. in the lower end of the device. Upon entering the enclosure 10 the flies, will be directed toward exit spout 13 -by reason of the converging walls 2 and 3 of frame 1. Shade element 15 will cause the flies to be attracted to said exit spout by reason of the light entering therethrough. The urge being constantly to move upwardly toward the light, the fiiesare thus guided to the opposite or outside of the screen.

Having thus described my invention, What I claim is ,.1. A device of the character described comprising an inverted substantially V- shaped frame including a pair of converging strips forming the sides thereof, wire mesh fabric sections secured to the edges of the frame, a cross slat of less width than the frame and having an inwardly beveled edge secured in said frame at a point near the lower end thereof and in connection. with the wire mesh fabric sections, forming an enclosure having an opening in the lower portion thereof, said cross slat being provided with a channel forming a bait receptacle, an exit spout for said enclosure and means provided on one of the sides of the frame, in proximity to one end of said bait receptacle and above the channel therein whereby access may be had to the latter.

2. A device of the character described comprising an inverted substantially V- shaped enclosure having a foraminous front and rear wall, an exit spout extending through said rear wall near the apex thereof and further rojecting outwardly and upwardly therefrom, a pair of oppositely disposed perforated leg members carried by the spout and positioned against the inner face of said rear wall and secured to the side portions of the enclosure, and an upwardly extending perforated ear carried by the spout andadapted to be secured to the apex of the enclosure.

3. A'device for the purpose set forth comprising an enclosure forming body includirig a pair of converging side walls, a foraminous front wall and a foraminous rear Wall, an opaque triangular shaped shade element secured against the outer face of the hereto. I

JEREMIAH MARSDEN

Images