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Патент USA US2111623

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March 22, 1938.
Filed Aug. 20, 1937
Patented Mar. 22, 1938
Rolla H. Halstead and Herbert Ferris,
Indianapolis, Ind.
Application August 20, 1937, Serial No. 160,036
1 Claim. (01. 156-37)
This invention is based upon the tendency ofover the upper edge of a wooden strip 10, or, and
flies, mosquitoes, moth millers, and the like to ?y
toward a light and upon meeting with an obstruc
tion to their progress, such as a window glass or
a wire screen, to crawl or move in an upward
direction against the obstruction.
preferably by clamping the hooked edge of the
wire cloth between the legs of a sheet metal
clamping strip ll, bent U-shape in cross section,
as shown in Figs. 1, 2, and 4.
The remaining edges of the wire cloth mem
The object of our invention is to provide a win
dow or door screen with a wire cloth obstruction
to the escape of insects through such openings
10 and to‘ provide a top ori?ce opening to out of
doors to which the wire cloth leads without any
change in surface disconcerting the insect, there
_ by allowing it to escape and speedily ridding the
room of all of them.
A further object is to reduce the entrance of
dust to the apartment using our invention and
more particularly to prevent rain from entering
and rain water from running down the outside
wall of the house and screen frame from enter
ing through the insect-escape opening and run
ning down on the inside of the screen.
We accomplish the above and other objects
which will hereinafter appear, by the means il
lustrated in the accompanying drawing, in
Fig. 1 is an outside front view of a door screen
containing our invention;
Fig. 2 is a vertical section on the line 2—-2 of
Fig. l;
Fig. 3 is an outside front view of a window
screen with'our device; and
Fig. 4 is a detail in cross section on the line 2-2
of Fig. 1 on a larger scale than that of Fig. 2.
Like characters of reference indicate like parts
in the several views of the drawing.
bers are retained against the stiles and rails of
the frame by the usual wooden strips I2 by driv
ing small nails through the strips and cloth into
the frame.
The strips l3 above the discharge opening for
insects extends outwardly beyond the horizontal
strips 10 and H, and therefore beyond the outer
surface of the wire cloth, in order to protect the
opening from rain, and, more effectively, to keep
rain water from entering and running down on
the inner side of the screen. To keep the rain
water from following the under surface of the
strip 13, we form the under side bead 14 along
which the water will collect and fall by gravity 20
instead of following an upwardly rising inner
surface of the bead.
The screen door may have the usual mullion
strip 15 for additional strength.
The wire cloth may be 36 inches in width,‘ more
or less, and the distance between the cloth and
rails for the escape of insects should be not less
than one fourth inch. The holding strips are
approximately one half inch wide and those
binding the top edges of the wire cloth are so
placed with relation to their adjacent rails as to
insure the requisite outlet for the insects and
strength and durability to the cloth edge at the
The operation of this invention has been de- :
scribed in connection with its structure so that
The door and window screens each comprise a further explanation is unnecessary.
rectangular frame, generally divided into areas,
While we have described the preferred form of
which are covered by wire cloth members 5. The
our invention in detail, it is obvious that many
stiles 6, of the frame and those rails 1, which changes are possible without departing from the
occur at the tops of the wire cloth members,
V spirit of our invention and we therefore do not
have the rabbets 8, at their corners next to the
to be restricted to the forms here shown
wire cloth, primarily to provide an unobstructed desire
space between the rails and cloth at the upper or any more than is required by the following
edges of the cloth for the exit of ?ies, mosquitoes claim.
We claim:
' and other insects. This rabbeting is preferably
In an insect removing screen, a frame having
continued on the stiles in order to increase the
openings, wire cloth secured at both sides and
exit to the maximum, the wire cloth being con
bottom to the frame, said frame having a cross
tinued across the rabbets and secured therebe
rail opposite the top edge of the wire cloth rab
yond to the stiles.
The rabbets 8 in the rails 1 preferably have beted next to the wire cloth to provide a space
their top walls 9 obliquely formed and extended top' edge of the cloth in given position opposite
above their adjacent wire cloth edges sufficiently
to provide an opening to the outside for the free
escape of insects trapped inthe house by the
screen and which will crawl up the inside of the
cloth to the opening and from there fly away.
In order not to halt the insects by any change in
the surface up which they are crawling, we prefer
to carry the wire cloth clear to the discharge
opening. This may be by carrying it to a lap
the cross rail, and a strip secured to the frame
above the space having an outer surface in a
plane outside of the plane of the cloth, said strip
having a bead along its bottom edge next to the
outer surface of the strip.
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