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Патент USA US3071228

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Jan. 1, 1963
A. D. GOETTL ET AL
3,071,218
EVAPORATIVE COOLER AND PAD FRAME LATCH MEANS THEREFOR
Filed Dec. 28, 1959
2 Sheets-Sheet 1
Mmm.
1470/7/14 0. 605772
B/{f/VD JOHN 6057-72.
W $116521?"
Jan. 1, 1963
A. D. GOETTL ET AL
3,071,218
EVAPORATIVE COOLER AND PAD FRAME LATCH MEANS THEREFOR
Filed Dec. 28, 1959
2 Sheets-Sheet 2
w 68
4W 0.
‘69.11.
mwmymm
AGENT
United States Patent G??ce
Patented Jan. 1, 1963
2
1
elements engageable with a pair of evaporative cooler pad‘
3,0713%
EVAI’GRATEVE COOLER AND PAE) FRAME
LAT€H MEANS THEREFOR
Adam D. Goettl and lohn Goettl, Phoenix, Aria, assign
ors to h/ic’Graw-Edison Company, Elgin, £52., a corpora
tion of Delaware
Filed Dec. 2%, 19595 Ser. No. 862,396
4 Claims. (tCl. 1559-36)
This invention relates to a pad frame latch means for
evaporative coolers and more particularly to a latch
means for evaporative coolers which functions to pro
frames abutted to a corner member of the evaporative
cooler main frame.
Another object of the invention is to provide a pad
frame latch means for evaporative coolers which gen
erally facilitates and improves the installation and re
moval functions of pad frames relative to evaporative
cooler main frames.
A further object of the invention is to provide a pad
frame latch means for evaporative coolers which is very
simple and economical of construction and which is very
durable in operation.
Further objects and advantages of the invention may
vide facility in the removal of pad frames from evap
be apparent from the following speci?cation, appended
orative coolers.
Various devices have been used to retain evaporative 15 claims and accompanying drawings in which:
FIG. 1 is a perspective view of an evaporative cooler
cooler pad frames in position with respect to the main
showing a pad frame latch means thereon and constructed
frame of an evaporative cooler, however, many of these
in accordance with the present invention.
devices are di?icult to operate or require tools for the
FIG. 2 is an enlarged fragmentary sectional view taken
removal or replacement of pad frames with respect to
'
20 from the line 2-2 of FIG. 1 showing the latch means
of the invention supported on a corner frame member
Accordingly, it is an object of the present invention to
of an evaporative cooler and showing one of the latch
provide a pad frame latch means for evaporative coolers
elements in open position and the other in closed posi
which is manually operable without the use of tools and
tion relative to a pad frame.
which provides facility in the removal or replacement of
FIG. 3 is an enlarged vertical fragmentary sectional
an evaporative cooler pad frame relative to the main 25
view taken from the line 3-3 of FIG. 1.
frame of an evaporative cooler.
FIG. 4 is a fragmentary elevational view taken from
Another object of the invention is to provide a pad
the line 4-4 of FIG. 2.
frame latch means for evaporative coolers wherein a
FIG. 5 is a sectional view similar to FIG. 2 but show
spring loaded latch member normally tends to hold a
pad frame securely in position relative to the main frame 30 ing a modi?cation of the present invention.
the main frame of an evaporative cooler.
FIG. 6 is a sectional view taken from the line 6—%
of FIG. 5.
FIG. 7 is a sectional view taken from the line 7-7 of
FIG. 5.
FIG. 8 is a fragmentary sectional view similar to FIG. 2
but showing a further modi?cation of the invention.
located in a corner member of an evaporative cooler
FIG. 9 is a sectional view taken from the line 9—9
main frame so that the latch means may operate in con
of FIG. 8.
junction with a pair of adjacent pad frames at each corner
FIG. 10 is a fragmentary sectional view taken on sub
of the evaporative cooler.
Another object of the invention is to provide a pad 40 stantially the same plane as that shown in FIG. 2 of the
drawings but showing a still further modi?cation of the
frame latch means for evaporative coolers wherein a
invention and showing by broken lines a varying position
single spring disposed in a corner frame member of an
of the latch means; and
evaporative cooler is useful to exert a yieldable force
FIG. 11 is a fragmentary elevational view taken from
upon a pair of latch members disposed to engage adja
cent pad frames abutting a corner frame member of the 45 the line 11—11 of FIG. 10.
As shown in FIG. 1 an evaporative cooler 20 is pro
evaporative cooler main frame.
vided with a top pan 22 and a sump pan 24. These pans
Another object of the invention is to provide a pad
22 and 2-4 are interconnected by corner frame members
frame latch means for evaporative coolers which pro
26 thereby forming a main frame for the evaporative
vides manually moveable cletent action at the upper cor
coler. Removably positioned in the main frame of the
nets of an evaporative cooler pad frame whereby the
evaporative cooler between the corner members 26 and
release of the latch means permits the upper edge of the
of ‘an evaporative cooler whereby the latch may be ac
tuated against its spring loading to remove a pad frame
from the main frame of the evaporative cooler.
Another object of the invention is to provide a novel
pad frame latch means for evaporative coolers which is
evaporative cooler to be pivoted outwardly about a ful
crum point on the main frame of the evaporative cooler,
forming sides of the evaporative cooler are evaporative
cooler pad frames 23. These pad frames 28 are pro
vided with air inlet louvers 39 and inwardly thereof each
pad frame supports a ?brous evaporative cooler pad
ly facilitating the installation or removal of an evapora
which is generally operated in wet condition whereby air
tive cooler pad frame from the main frame of an evap
passing through the louvers 30 evaporates moisture in
orative cooler.
the ?brous material of the pad and the air is thus cooled
Another object of the invention is to provide a pad
for delivery to a dwelling.
frame latch means for evaporative coolers wherein a
The normally lower edges 32 of the pad frames 28 are
cooler pad frame is provided with a fulcrum bearing near 60
provided with ledge bearing portions 34 as shown best
its lower edge which bears upon a portion of the main
in FIG. 3 of the drawings. These ledge bearing portions
frame of an evaporative cooler thereby permitting the
34 are arcuate in cross section and rest upon a fulcrum
upper edge of the evaporative cooler pad frame to be
edge 35 which is actually the upper edge of the pan 24.
pivotal relative to the main frame and laterally thereof
Thus, the pad frames 28 are pivotally mounted on the
whereby, resiliently loaded latch means engages the upper
upper edge 36 of the pan 24 and may be pivoted out
edge of the pad frame relative to the main frame of the
wardly in the direction of the arrow A when. released by
evaporative cooler when pivoted into ?ush position with
the pad frame latch means of the invention. This pad
the side thereof.
frame latch means of the invention is provided with a
Another object of the invention is to provide a pad
plurality of latch levers 33 two of which are located on
frame latch means for evaporative coolers wherein the
each corner frame member 26 near the upper edge por
latch means is provided with a single lever alternately
tions of the pad frames 28.
movable in opposite directions to actuate release latch
adjacent the lower edge of said pad frame, thereby great
3,071,218
3
As shown in FIG. 2 of the drawings, each corner frame
member 26 is provided with a pair of openings 46 through
which the levers 38 extend. These levers 38 are provided
with outwardly curved manual ?nger engaging portions
42 and internally of the corner frame members 26 these
levers are provided with a T head 44 to prevent them
from sliding outwardly through the openings 40.
Each lever 33 is provided with an inwardly directed
F as shown in FIG. 5 of the drawings, the latch 62 is
released to the broken line position G while the lever 72
may be moved in the opposite direction to release the
latch 62 at the opposite end of the wire 64. It will be
seen that when the lever 72 is in the broken line position
F, the yoke 79 slides over one arcuate loop 68 while
retracting the other one.
In the modi?cation as shown in FIG. 8 of the draw
?ange 46 which is engaged by one end of .a plate spring
ings, the corner frame member 26 is provided with a slot
4-8 secured centrally of the corner frame member 26 by 10 74 through which a lever 76 extends. This lever 76 is
a metal screw 56’. Resilient action of the spring 68
pivoted on a pin 73 carried by .a bracket 80 supported
exerts force on the end 46 of each lever 48 thereby tend
ing to pivot it about a fulcrum formed by the shoulder
52 of each T head 44 adjacent the opening 46. Thus,
force exerted by the spring 43 tends to hold each lever
38 in the direction of the arrow B in FIG. 2 of the draw
ings. In this position the lever 38 ?rmly engages the
outer side 54 of an evaporative cooler pad frame 28
thereby holding it ?rmly against an offset portion 56
on the inner side of the corner frame member 26.
Also supported on the inner side of the corner frame
member 26 is a plate spring 82 having opposite latch
ends 84- and 86 adjacent to the pad frame supporting
portions 56 of the corner frame member 26. Adjacent
to the latch ends 34 and 86 the spring 82 is provided
with loops 88 and 98 into which angular ends 92 and 94
of respective links 26 and 98 are disposed. The link 96
which is recessed from the corner of the frame member 20 is made of wire and is provided with a loop 106 which
‘ 26 to receive the ?ange 58 of the pad frame 28.
fits over the link 98 and is slidable thereon. Likewise
It will be noted that when the ?ange end 46 is pivoted
into the position as shown at C in FIG. 2 of the drawings
this ?ange end 46 passes over center relative to the re
spective opening 40 thereby holding the latch lever 38
the link 98 is provided with a loop 162 whichv is slidably
mounted in surrounding relationship with the link 96.
This arrangement is shown in detail in FIG. 9 of the
drawings.
in outwardly extended open position relative to the recess
The lever 76 projects between the links 96 and 98 and
portion 56 thereby permitting removal of the evaporative
is also located between the loops 160 and 162 so that
cooler pad frame by pivoting it away from the main
when the lever is pivoted, one of the loops 160 or 102
cooler frame in the direction of the arrow A shown in
is actuated to create tension in one of the respective links
FIG. 3 of the drawings. Thus, the pad frame may be 30 96 and 98 which thereby retracts one of the latch ends
readily raised upwardly and outwardly of the main frame
84- and 86 of the spring 82 from a detent recess 104 in
of the cooler until the lower edge of the pad frame clears
a side 1636 of a cooler pad frame 28.
the upper edge 36 of the sump pan 24.
In operation the pad frame 28 is installed by forcing
During installation of the spring 48, its opposite ends
it inwardly against the incline of the spring 82 adjacent
are extended through openings 58 in the corner frame
member 26 thereby holding the spring in a broken line,
its latch end 84 which causes de?ection of the spring
position E until the screw 50 is inserted therein and
the drawings, thus the spring is automatically moved to
accommodate the pad frame 2-3 when the frame is forced
into the main frame of the evaporative cooler. When
tightened down to pull the spring into the solid line
toward the broken line position H shown in FIG. 8 of
position as shown in FIG. 2 of the drawings.
As shown in FIG. 4 of the drawings it will be seen 40 the pad frame 28 is in the position as shown in FIG. 8
that the portion 42 of the latch lever 33 overlaps the
of the drawings, the latch end 84 of the spring snaps into
outer side of the pad frame 28 thereby securely retain
the detent recess 1% and thereby prevents retraction of
ing it in place with respect to the main frame of the
the pad frame 28 from the main frame of the evaporative
evaporative cooler.
cooler until the lever 76 is moved to the broken line
In the modi?cation as shown in FIG. 5 of the drawings
position K whereupon the link 96 is forced by engagement
the corner frame member 26 is provided with openings
of the loop 10%} into the broken line position wherein it
60, one of which is near each vertical edge of the corner
retracts the spring to the broken position H, all as shown
member and through which latch arm portions 62 of a
best in FIGS. 8 and 9 of the drawing.
resilient latch wire 64 project. The portions 62 are
In the modi?cation as shown in FIGS. 10‘ and 11 of the
engageable with the outer sides of evaporative cooler 50 drawings the pad frame 28 is provided with a slot 108
pad frames 26 adjacent to the corner frame member 26
in its front side 54, and movably mounted in this slot
and these portions 62 are integrally connected by means
is
a latch lever 116‘ provided with an angularly offset
of a spring coil portion 66 of the wire 64.
portion 112 which engages an inwardly directed edge
This wire 64 is arranged in a substantially V-shaped
114 of the corner frame member 26 similar to that here
con?guration and is provided with a pair of opposed
inbefore described. An angular surface 116 of the angu
curve portions 68 engaged by a loop yoke 70 which is
larly offset portion 112 is so arranged that it provides
?xed to an actuating lever 72 having a loop handle 74
a camming action at the edge 114 when normal resilience
disposed on the outer side of the corner frame member
of the latch lever tends to force it in a direction of the
26. The handle 72 projects through a slot 76 in the
arrow L shown in FIG. 10 of the drawings. This latch
corner frame 26 so that the handle 74 is operable to 60
lever at its angular portion 112 projects through an open
retract either of the latch portions 62 of the wire 64.
ing 118 in a side wall of the pad frame 28. Referring to FIG. 6 of the drawings, it will be seen
The latch lever extends backwardly to the rear of the
that the yoke 70 surrounds both of the arcuate portions
frame 28 and is integral with a torsion bar portion 120
68 and that an angularly and downwardly directed end
78 of the handle member 72‘ is pivoted inside the wire 65 which extends downwardly therefrom along the back of
the frame and is provided with an inwardly extending
coil 66 to form a fulcrum between the lever 72 and the
portion 122- which is anchored at its end 124 in a slat 126
wire 64.
in the side wall of the cooler pad frame 28.
The yoke 76 being made of wire is spot ‘welded to the
The latch lever 110‘ at its outer end is provided with a
wire actuating lever 72 and is freely movable over the
arcuate portions 68 of the wire 64 so that it may be used 70 ioop 128 which serves as a handle for actuation thereof.
for reciprocal operation of the latch portion 62 relative
to‘ the pad frames 28 for locking them into the main
In operation the latch lever 128 is manually shifted
from the solid line position to a broken line position M
which moves the angular latch portion 112 out of inter
ference with the edge portion 114 of the corner frame
frame of the cooler or releasing them therefrom as
desired.
When the lever 72 is moved to a broken line position 75 member 26 thereby permitting pivotal removal of the pad
3,071,218
5
6
frame 23 outwardly in the direction of the arrow A as
engaging portion of said latch member engaging said pad
shown in FIG. 3 of the drawings.
The torsion bar spring portion 120 of the latch lever
frame and tending to hold it in a position adjacent to said
$.10 always tends to maintain the latch lever 12% in the
ing therein; and a lever disposed to de?ect said latch
solid line position wherein the angular latch portion 112
member; said lever projecting through said opening from
at its angular cam surface ‘ti-=3 engages the edge 114 of
the corner frame member 26.
It will be obvious to those skilled in the art that vari
ous modi?cations of the present invention may be resorted
to in a manner limited only by a just interpretation of the 10
following claims.
We claim:
1. in an evaporative cooler and pad frame latch means
therefor the combination of: an evaporative cooler main
frame having corner members; evaporative cooler pad
frames adjacent thereto; a lever pivotally mounted rela
tive to said corner frame member; a pair of latch mem
corner member, said one corner member having an open—
the inner side of said corner member to the outside there
of; a handle portion of said lever at the outer side of said
corner member, whereby force applied to said handle
portion in one direction causes it to de?ect said pad
frame engaging portion of said resilient latch out of inter
ference with said pad frame so that the pad frame may
be moved out of a position adjacent to said corner
members.
4. In an evaporative cooler and pad frame latch means
therefor the combination of: an evaporative ‘cooler main
frame comprising upright corner members; evaporative
cooler pad frames between said corner members; a re
bers extending outwardly of said corner frame members
silient latch means supported on one of said corner mem
and engageable with the edge portions of said cooler pad
frames adjacent thereto for holding them in position rela
bers and at the inner side thereof; opposed portions of
tive to said corner frame member; resilient means exerting
force on said latch members to hold them in engagement
with said pad frames; means on said lever alternately
said resilient latch means directed laterally of the respec
tive corner member and engageable with adjacent cooler
pad frames, said cooler pad frames having portions in
which said opposed portions of said latch means is en
gaged and disposed to prevent removal of said pad frames
engageable with said latch members for selectively and
alternately de?ecting them out of engagement with said 25 relative to said corner members; and lever means pro
jecting through said one corner member from the inside
evaporative cooler pad frames adjacent said corner frame
to the outside thereof, said lever means inwardly of said
member.
2. in an evaporative cooler and pad frame latch means
corner member operably connected to said resilient latch
therefor the combination of: an evaporative cooler having
means; a handle means of said lever means at the outer
a main frame provided with corner frame members;
side of said corner member whereby force applied to said
evaporative cooler pad frames adjacent thereto; a plate
handle means of said lever means, in one direction, causes
deflection of said latch means to relieve one of said op
spring secured on the inner side of one of said corner
frame members; opposite ends of said plate spring form
ing latch portions projecting inwardly at an incline; link
age coupled to said plate spring for deflecting the latch
ends thereof inwardly; a lever pivotally mounted on said
corner frame member and coupled to said linkage for
actuating the same to move the latch ends of said spring
alternately in opposite directions; said pad frames having
etent recesses in the sides thereof each engageable by 4.O
one end of said plate spring at one of its latch portions
whereby said pad frame when moved into the main frame
of said evaporative cooler de?ects said plate spring out
wardly until said detent recess portions move beyond the
latch ends of said spring whereupon they snap thereinto. 45
3. In an evaporative cooler and pad frame latch means
therefor the combination of: an evaporative cooler main
frame comprising upright corner members; an evaporative
cooler pad frame adjacent one of said corner members;
means removably and pivotally supporting the normally 50
lower portion of said pad frame between adjacent corner
members; a resilient latch member supported on said one
corner member and at the inner side thereof; a pad frame
posite ends thereof relative to an adjacent pad frame to
thereby release said pad frame and permit it to be moved
relative to said corner member.
’
References Cited in the ?le of this patent
UNITED STATES PATENTS
139,197
641,471
2,214,750
2,279,165
2,289,214
2,319,403
2,513,716
2,560,506
2,575,499
2,610,893
2,630,362
2,714,546
2,856,166
2,895,760
Schneider ____________ __ May 20,
Scheel _______________ __ Ian. 16,
Myers ______________ __ Sept. 17,
Grace ________________ __ Apr. 7,
Schultz _______________ -_ July 7,
Hill _________________ __ May 18,
Farr _________________ __ July 4,
Despard _____________ __ July 10,
Manow ______________ __ Nov. 20,
Collins et al ___________ _._ Sept. 16,
Bass _________________ __ Mar. 3,
Lesniak ______________ __ Aug. 2,
Goettl ______________ __ Oct. 14,
Dorsal; et a1 ___________ __ July 21,
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