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Патент USA US2404479

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July 23, 1946.
B. 'EssicK
Filed Aug. 30, 1944
. 2 Sheets-Sheet l
July 23, 1946.
B. EsslcK
' 2,404,479
Filed Aug. 30, 1944
2 Sheets-Sheet 2
Patented July 23, 1946
Bryant Essick, Los Angeles, Calif. '
Application August 30, 1944, Serial No. 551,981
11 Claims. (Cl. 261—97)
This invention has to do, with an evaporative
cooler and has particular reference to the mount
ing of the pad in a cooler of the type wherein
there is a pad of excelsior, or the like, through
which air is circulated. A. general object of the
invention is to provide a simple, inexpensive, and
improved construction for supporting a pad in a
the cooler. Fig. 2 is a side view of the cooler with
parts broken away to show .in section in order to
illustrate the general arrangement and construc
tion of the cooler. ‘Fig. 3 is an enlarged ‘detailed
sectional view taken at the lower end portion of
' the pad, as shown in Fig. 2. Fig. 4 is an enlarged
detailed sectional view taken at the upper end
portion of the pad as shown in Fig. 2. Fig. 5 is
an enlarged plan View taken as indicated by line
It is common to employ evaporative coolers
wherein there is a box-like body containing a fan v10 5-5 on Fig. 4. Fig. 6 is a perspective view of the
pad shown apart from the other ‘portions of the
or blower and a pad ‘of excelsior, or the like, nor
structure; Fig. 7 is’a vertical sectional View of the .
mally wet with water and arranged so air is cir
frame of the pad carrier. Fig. 8 is a face view of
culated through it. In this type of device the pad
cooler of the type referred to.
the retainer of‘the pad carrier shown separate
must be replaced from time to time and, there~
from the other parts. Fig. 9 is a detailed sec
fore must be mounted so it can be readily re
tional view at the upper portion of ‘another con- '
struction provided for'clampingvthe pad in the
A characteristic di?iculty of evaporative coolers
carrieryand Fig. 10 is an enlarged detailed sec
of the general character hereinabove ‘referred to
tionel plan view through the pad carrier at one
is that the pads sag after being in use a short time
and, frequently, lower at the upper edge to leave 20 end thereof showing a pad in place therein and
showing the manner in which the retainer of the
gaps through which air can pass without being
carrier is latched in‘ the frame being a view of the
circulated through the pad. When a pad drops '
pad and carrier only and taken substantitally as
or sags, vleaving an opening through which air
indicated by line l0—-| 0 on Fig. 3.
can by-p'ass, the e?iciency of the cooler is lowered
The present invention is ‘primarily concerned
materially, as no evaporative action is induced by
with the mounting of a pad of excelsior, or the
the mere circulation of air through an open space,
like, in an evaporative cooler. The invention is
but only occurs when the air is circulated through V
the pad.
applicable, generally, to evaporative coolers em
ploying pads that are wetted and through which
It is a genera1 object of this invention to pro
vide a structure or mounting whereby an evap 80. air is circulated and it is in no way‘ concerned
‘with the speci?c details of the general cooler con
orative pad such as a pad of excelsior'is securely
struction. For. purpose of example I have illus
held in proper working position so that it will not
trated a typical or conventional form of evapora
drop or ‘sag in the manner usual to devices of this
tive cooler and have shown speci?c structural de
tails peculiar to that particular cooler. It is to
Another object of this invention is to provide
be understood that the broad principles of the
a structure involving a pad carrier which securely
present invention are not limited to the speci?c
clamps and holds the pad so that it cannot sag
or drop but ‘can be readily removed or replaced - cooler that I am about to describe but that the
invention may be applied, generally, to evapora
when desired. With the construction of the pres
tive coolers wherein a pad is mounted so that
ent invention the pad is held in a carrier so that
water flows through it and air is drawn through
it is'clamped along the upper edge holding that
edge securely and so that it cannot sag. The
The general construction illustrated in the
clamp device provided by the invention is such
drawings involves a boxr-like body It, pads I I ar
that it can be readily released whenever desired
so that the pad can be removed for purpose of re-_ 45 ranged at the two ends of the body, carriers l3
supporting the pads in the body, means M for
moval or replacement.
wetting the pads, means l5 for circulating air
'The'various objects and features of my inven
through the pads, and means I6 ‘clamping the
tion will be fully understood from the following
detailed description of typical preferred forms
pads in the carriers.
The body l0 may be a simple box~like structure
involving, generally, a base 20, a top 2|, side walls
which description reference is made to the ac
22 and end walls 23. vIn the particular case illus
companying drawings, in which: '
trated each end wall 23 is provided with a large
Fig. 1 is a view of a typical evaporative cooler
opening or aperture .24 to which a pad II is
in which the present invention may be embodied
with the
removed to Show the structure inside 55 mounted by means of a carrier I3; In the, par
and applications of the invention, throughout
2,404,479 I
ticular cooler illustrated the base 20 of the body
rearwardly from the panel 30 far enough to ac
is a pan-like element forming a ?uid receptacle
commodate the pad II and retainer B as shown
throughout the drawings. In the particular con
struction illustrated an inwardly turned lip 35
is provided at the inner edge of each ?ange to
lend rigidity to the structure and to form parts
to hold the latches of the retainer as will be here
that catches water that may drain from the pads.
In practice the several parts of the body may be
formed of sheet metal and it may be built up of
parts or sections suitably joined together or made
detachable to facilitate assembly or removal for
access to other parts such as will be hereinafter
inafter described.
described. Further, it is to be. understood that
The retainer 13 is a“ rectangular _ frame-like
in practice suitable frame elementsor reinforce
‘structure proportionedf‘to ?t intojiQth'e back of the
ments may be incorporated in the'body structure
frame A and, in'practice, it may be provided with
as circumstances require, or to serve as mountings } _ e, a plurality of spaced braces 40 to bear against the
for the other elements.
‘ ~' “ ‘back of the pad to lend genera1 support to the
As I have pointed out above, the particular
cooler illustrated involves two pads, one at each
end of the body. Since the two pads and their
. pad; ;_In the preferred construction I provide piv
oted latches 4| on the retainer adapted to be
turned behind the lips 35 so that the retainer is
carriers are or may be identical I willldescribe one . ‘_ __
of them, it being understood that such descrip- _'
tion may apply equally to both.
The pad ll may be of the general type or con
struction commonly; found oremployed in evapo
rative coolers of the general type hereinabove re
ferred to. The particular pad illustratedin the
v ‘
drawings is a thin ?at pad as distinguished from
a round bulky pad such as is used in- oil ?lters and
the like, and it involves an envelope 25 of fabric,
or the like, ?lled with excelsior 26 or other suit
held inthe frame-so that it holds the pad in the
frametight against the inner side of the Panel 30.
practice the‘latches can be located to en
gage behind lips 35 at the top and bottom or at
the 'sides of the ‘frame andzthe braces »;40.:which
give general clamping supportyto the pad can,‘ ex
tend either vertically or horizontally.
I have shown an arrangement where the‘ latches
engage side lips While the braces _40>eXtend-:ver-‘
The means..114 provided
." for wetting
.> the pad.“
while it is in place in the carrier and the carrier
is arranged "in the-body, at the aperture 24, may
able thickness packed full of excelsior 26 to have 5 _, vary widely in form and construction: In-the
the shape shown in Fig. 6, and to maintain the
particular case: illustrated "the means . I4 involves
desiredjshape the pad may have ties 21 extending
a pump 50, receiving ;.water'from the» tray or ree
through it from one side of the envelope to the
ceptacleformed bythebase 20-.a‘nddriven ‘by a
other, following generally the construction em
suitable motor 51:, ~‘I‘he water;_deliveredby:_the
ployed in mattresses. The usual pad such as I 35 pump; is: carried by a suitable/‘pipe; 52 *to,-;d.e,
have referred ‘to employs an envelope 25' of coarse .
to the
top maybe
of the pad
to be twetted...
to distribute
cloth such as burlap, or the like, and the padding
the water from the pipe 52 tothe top of the .pad'.
or material 25 within the envelope is excelsi'or or
able material. ' The envelope as shown in the
drawings may be a rectangular structure of suit;
other material that will carry or handle water
and will form a porous mass through which, air .= H
In Figs. 1 to 7 of the'drawings- I' show .a V;-shaped
channel 53 arranged in the top of the frame Av to
extend across the top of the top edge-portion of
can be drawn sozthat the water is evaporated by
the circulation of ‘air. A pad such as I have de
scribed and which is shown in Fig. 6 will stay in
pipe’ 52 and it has one-edge anotched ~at.;55 at
‘ r the desired shape or form when ?rst put into use,
spaced points along its-length: so that the water
the pad. The ‘trough 5.3, reoeivesavvater ‘from the
but after being used for a short time the packing ;. is effectively distributed along the'top'edge of the
pad. By notching the edge ,or side .of. the trough
or padding 26 softens or deteriorates and is wetted
with water with the result that it has a markedv 1 by means of narrow cuts thewater is uniformly
tendency to sag or settle.
The clamping means [6 provided bymy inven
' tion may be carried out in various manners so (5!)
that it clamps or holds a pad II from its upper
edge and so that the pad occupies‘the aperture
24 in the end of the body. In the preferred form
distributed throughout the length of the"; trough
with-the result that the top edgeof :the pad is
wetted throughout its length.
-~ ’ r
,- s»
In Fig. 9 of the'drawings I show-a distributing
pipe‘ 53am place of a trough, which pipe extends
along the top of the'pad'and-may be- provided
of the invention I include or incorporate the
means It in, or in connection with, a carrier I3
Which is detachable from the body as a unit and
which for-ms a frame or support for the pad.
with small openings at suitable intervals to-dis
tribute water to the pad-i vThe pipe53a-imay- be
connected to’ the" pipe '52 -~throughyany. suitable
The particular carrier [3 illustrated in the
drawings is a shallow rectangular box-like struc
The clamp means l6‘ provided bysmy-invention
engages the‘top edge portion of the padto. clamp
and hold it securely against, sagging or. dropping.
The clamp means of theipresent invention. in
ture and involves 'a main frame A and a retainer
B which together con?ne and hold the pad I l gen
erally at the aperture 24 in the body It). The
frame A of the carrier includes a front panel 35
which may be a' ?at sheet metal part and rear
wardly extending marginal flanges 31 extending
rearwardly from the ‘edges of the panel. Suitable
openings or louvers 33 are provided in the‘ panel
30 to pass air. The panel 30 is shaped and pro
portioned to ?t immediately behind the end Wall
23 of the body in register with the aperture 24 and
the frame A as a unit normally rests on a support
34 in the body and can be bodily lifted from the
support and removed from the body so that it is
detachable as a unit from the body.
connection. -’
volves one or'more 'jaws‘ preferably toothed and
arranged to engage and .bite into the upper edge
portion of the pad |‘|.-'-,Wh'e‘re the construction
involves-a trough 53, at the top ‘portion of the
frame A I provide a jaw Bil ion: the" rear .side- of
the "trough'lto face rearwardly' - and, I ‘provide a
jaw'?l on the upper edge ‘portion of the'retainer
to face'forw'ardly.‘ The‘ two jaws have ‘their pro
jecting edgesrtoothed, as shown in~Fig.i5, and the
general construction and arrangement is prefer
ably such that the jaws overlap-soqthatthe- upper
edge' portion of the-pad‘ is tightly clamped be
tween’ them. In practice-1'spacenthe-jaws 60 .and
The marginal ?anges 3| of the frame A project £75 B l' vapart vertically ‘ so Tthati'za- part o'frathe‘ upper
edge portion of the pad enters or extends between
the jaws and the jaws do not come together in a
manner to cut the pad. By providing toothed
toothed clamp jaw opposed to said part and
clamping the upper edge portion of the pad to
jaws the pad is effectively clamped and gripped
4. In an evaporative cooler, a box-like body, a
pad, and means mounting the pad in the body
including a carrier having a frame with a water
distributing trough at its upper end, a retainer to
be attached to the frame to hold the pad therein,
and a pair of clamp jaws to engage and hold the
so that its upper edge portion is positively held
against sagging,
In a construction such as is shown inFig. 9,
where there is no trough to carry the jaw '60 a
jaw I50a may be provided on the inner side of the
said part.
front panel 30 of the frame. In the case illus 10 upper edge-portion'of the pad, one of the jaws
trated a jaw Bln is provided on the retainer at ' projecting from the trough andthe other being
carried by the retainer.
a point opposite the jaw 60a and the toothed edges
5. A carrier for a thin ?at porous pad including
of the jaws I50a and tila approach each other to
' two parts one a shallow frame to receive the pad,
clamp the upper edge portion of the pad between
the other a retainer to engage the pad and hold
it in the frame, and a toothed jaw on one part
The means I5 for circulating air through the
to engage the pad and clamp its upper‘ edge por
pad ll may be a fan or blower as circumstances
tion tight against the other part.
require. In the case illustrated I show a blower
6. A carrier for a thin ?at porous pad including
‘H mounted in the body ID to be driven by a motor
12. Air is drawn into the blower through an inlet 20 a shallow frame having a transversely disposed
opening 13 and is discharged through an outlet > toothed jaw at its upper end, and a retainer to
engage the pad and hold it in the frame, the
duct 10 which extends from one side 22 of the
retainer having a transversely disposed toothed
jaw at its upper end, the jaws opposing each other
In practice the desired pad II is ?rst installed
in the carrier I3 by being arranged in the frame 25 to clamp and hold the upper edge portion of the
pad tight between them,
A and secured therein by the retainer B. The
7. A carrier for a pad including a frame, a re
carrier is then inserted in the body l0 in register
tainer to engage the pad and hold it in the frame,
with the aperture 24. As the apparatus operates
a trough in the frame, a jaw on the trough to
the blower draws air through the pad and dis
charges it through the discharge duct 10 while 30 clamp the upper edge portion of the pad, and a
jaw on the retainer to clamp the upper edge
the means l4 circulates water by drawing it from
portion of the pad.
the base 20 and distributing it across the top of
8. A unit of the character described including,
the pad so that it percolates down through the
pad. The pad being clamped through the means
l6, as above described, is effectively and Securely
held against sagging and will remain in effective
operating position until the packing material 26
two parts, one a carrier frame the other a re
is no longer effective or until it is desired to in
stall a new pad, whereupon the carrier can be
ranged clamp jaw carried by the other of said
parts and engaging the upper edge portion of the
removed and a new pad installed.
Having described only typical preferred forms
tainer, a pad arranged between said parts, a
rigid transversely arranged member at the upper
end of one of said parts, and a transversely ar
40 pad to clamp the pad to said member.
9. A unit of the character described including, a
frame, a trough at the upper end of the frame,
a retainer opposed to the frame, a pad, between
the frame and retainer, and a clamp jaw on the
and applications of my invention I do not wish to
be limited or restricted to the speci?c details
herein set forth, but wish to reserve to myself any
variations or modi?cations that may appear to 45 trough engaging the pad and cooperating with
the retainer to clamp the upper edge portion of
those skilled in the art and fall within the scope
the pad.
of the following claims.
10. A ?lter unit including, two parts, one a
Having described my invention, I claim:
1. A unit for an evaporative cooler including, a
carrier frame the other a retainer, a pad ar
vertically disposed shallow box-like body having 50 ranged between said parts, an elongate clamp
a transverse part at its upper end, a thin flat por_
ous pad, and means mounting the pad in the
body including a toothed jaw member movable
relative to said part and clamping the upper edge
portion of the pad tight against said part.
2. In an evaporative cooler,_a box-like body, a
pad, and means mounting the pad in the body
jaw carried by one of said parts and engaging
the upper edge portion of the pad and extending
' substantially parallel therewith to hold the pad
by clamping it to the other part, and braces car
65 ried by the retainer engaging the pad to support
it against sagging.
11. A ?lter unit including, two parts, one a
carrier frame the other a retainer, a pad arranged
between said parts, an elongate clamp jaw car
edge portion of the pad to hold it so the pad is
60 ried by one of said parts and engaging the upper
suspended therefrom.
edge portion of the pad and extending substan
3. In an evaporative cooler, a box-like body,
tially parallel therewith to hold the pad by clamp
a thin rectangular porous pad, and means mount
including cooperating jaws clamping the upper
ing it to the other part, and means carried by
ing the pad in the body including a carrier hav
one of the parts to engage other portions of the
ing a rectangular frame with a transverse part at
its upper end and a retainer to be attached to 65 pad to clamp it.
the frame to hold the pad therein and having a
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