US2219743A - Insect destroyer - Google Patents

Description

Oct. 29, 1940. D. s. KARR INSECT DESTROYER Filed oct. 12, 1957 2 Shoots-Sheet 1 Oct. 29, 19.40. D s KARR f l 2,219,743

INSECT DESTROYER Filed 001'.. l2, 1957 I 2 Sheets-Sheet 2 @l l INVENTR.-

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AT EY Patented Oct. 29, 1940 veATrlSsur.V oFF-ica INsEoT DESTROYER Darwin s. Karr, Les Angeles, Calif. Application oeteber 12, 1937, Serial N; 168,648 1 claim. (o1. 43112 This invention relates to novel and improved constructions in electric fly Iand-insect destroy-v ers and it consists in the constructions, arrangements and combinations` herein described and claimed.

It is the-cardinal purpose of the invention to provide a novel construction of grid, having an arcuate surface, facilitating and enticing flies and insects to alight thereon.

Is is also an object of the invention to provide an insect destroyer of economical manufacture and highly sanitary in the provision of a removable tray for disposing of the destroyed insects.

Additional objects, advantages and features of invention will be apparent from the following description considered in conjunction with the accompanying drawings, wherein:

Figure 1 is a perspective view of a destroyer, constructed in accordance with my invention.

Figure 2 is an enlarged top plan view, parts being broken away.

Figure 3 1s a sectional View, partly in section.

Figure 4 is a perspective View of a guard employed with the cage.

Figure 5 is an end elevation illustrating the guard installed.

In carrying out my invention, I provide a frame structure indicated at l0, which may be of any desired shape and size, although in the present instance, this is shown as'rectangular, and includes a lower horizontal ange II providing an open bo-ttom and an upper flange I2, defining an opening in a cover which has a convex curvature, as may be seen from Figure 3.

The frame II! is suitably supported by legs I3 at the longitudinal sides and as shown, the legs are formed from strap metal interconnected by a medial portion I4. The portion I4 may be raised from the supporting surface as shown, or may extend in a plane flush with the lower end of the legs, as desired.

An insect collection tray I5 is provided, oom-V prising lateral anges I5 cooperable with the respective flanges Il of the frame for support thereof. The frame II! is suitably apertured to admit the tray for seating engagement with the anges and to permit ready withdrawal for emptying of the tray, as required.

An insulator bracket IIS is mounted upon an upright wall adjacent one end of the frame II] and similar brackets I 6 are secured to the frame adjacent the three remaining corners of the frame, the brackets Iii-I5 affording support for a grid II. The grid in the present instance comprises a series of transverse support rods I8 upon the upper surface of which and'extended thereacross there are secured a plurality of close# ly spacedfbars l I9. Any suitablemeans may be 4 employed vfor 'slipportirigv thefgrid upon the brackets Ibut in the present instance, I `have 5 shown a binding ,screw 20.. .neor'm're of the adjacent ba'rs I9`inay be bent downwardly', as at a and positioned behind the screw 20. Tightl ening of the screw will obviously secure the grid to the bracket. Two or more of the brackets m I6 may be thus constructed, as found necessary. The grid I'I forms `one electrode of a circuit whereby electrocution of insects may be accomplished, as will be apparent as the description proceeds. w

The bracket I6 includes a suitable binding post or connection 20 for a lead 2| from a. transformer 22, one side of which is grounded to the cover 23 forthe frame. One or two of the bars I 9 are electrically connected with the connec- 20 tion 20". The cover 23 is suitably spaced from the grid Il and uponthe underside of the flange I2 there lis secured by means of clamp screws 24 a grid 25, constructed similar to the grid I'I,

although the bars I9 will be in staggered rela- 25 tion with respect to the bars I 9 of the grid I1.

The ange I2 and the cover 23 are convex, and the grids l1 and 25 will be similarly shaped, as may be seen in Figure 3, presenting` a surface inducing ilies and other insects to alight thereon but the grids are spaced suniciently close to permit the insects to complete the circuit when the insects crawl into engagement therebetween and' both grids are contacted. The electrocuted insects will fall through the grids into the tray I5, and the eluvia of previously killed flies and other insects is an irresistible attraction to other insects, obviating the necessity rfor baiting the destroyer.

When the tray has accumulated sufficient nies 4D and other insects, it may be readily withdrawn for'cleaning.

In order that the trap may be harmless to persons who may come into contact therewith,

I have provided a guard 26 illustrated in Figures 45 4 and 5.

The guard in the present instance, is formed from rod wire of any suitable gauge, and consists of a plurality of substantially U-shaped brace members 21, the downwardly extended legs 28 of which are connected to longitudinally extended parallel rods 29. The distance between i the longitudinal rods is such as to readily span the sides of the frame I0, and at suitable points the frame lo win be providedA with tapped aper-v I tures for reception of stove bolts which are also engaged through apertured clips carried by the rods 29.

The U-shaped brace members 21 are substantially arcuate-shaped, conforming to the upper wall of the frame l0, being positioned a distance thereabove, and upon their upper edges a plurality of wire strands 3l are secured, the strands extending lengthwise thereacross and being spaced suiciently close to prevent a persons hand, fingers, or other portions of the body from encountering either of the grids I1 or 25. The strands 3l may be arranged in multiples of three or otherwise, but in any event they should be arranged so as to not interfere with entrance of insects to the grids, and by arranging vthe guard as an open frame, ample entrance space is provided by which insects may gain access to the electried grids.

It should be noted that the guard may be readily nested over the trap for shipping purposes. l

It will bel readily apparent that my destroyer is of such nature that it may bereadily handled bya person without liability of shock Afrom the electric current since it will be impossible for a person to encounter both grids simultaneously,

as will be required, and while I have shown and described a specific embodiment of the invention, this is by way of illustration only, and I consider as my own all such modifications in structure as fairly fall within the scope of the appended claim.

I claim:

An electrical insect destroyer comprising a box-like frame having an open bottom and a convex upper surface, the convex surface having an opening formed therein, a grid secured and electrically grounded to the under side of the convex surface and positioned within the opening, the grid having a curvature corresponding to that of the convex surface of the frame, insulator brackets secured on opposed vertical walls of the frame below the grid, one of said brackets having a binding post for connection with an electro-motive source, a second grid having a curvature corresponding to that of the rst named grid and spaced therebelow, said second named grid being positioned on the insulator brackets and electricaly connected to the binding post, and certain of said brackets having a binding screw for clamping said second named 25 grid thereto. Y DAR KARR.

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