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Nov. 11, 1947._
w. F. WESLEY
DIAPHRAGM PUMP
Filed June 18, 1945
2,430,545
Patented Nov. 11, 1947
ere/res‘ e»
v,_,z,430,5¢.1_5
PEQERAGIYILEQW
--.-Walter.r.F. MesleyHMinneapolisnll?nn.
ee?aewnee, Isa-Seal}new
' ‘
veolaiins.
(ohms-151)
2
_lVIy present invention" relatestohigh capacity,
diaphragm 'punips" ‘and is "an‘ijnprovem'eiitiupon
provided with circular" out-turned attachment
?anges-5a. aiiidiicil'réspectively, vvhich'a're secured
the strue-tuieniscmsed "in "Ii1y”‘U.'_‘ s1 "Letters Pat'
together with sealed effect, in between which'is
'ai'iéhored'and 's'e‘aled'the outer, peripheral’edge
‘ent ‘No'."2j314,74'5,""asEwell as the pump structure
disclosed in my co-pending application,
479,667, entitled “Diaphragm force pump.”
“or 'ahpl‘eefofinedj?exible diaphragm 1; Casing
sectioned and 6 may conveniently be in the form
In general, it is ,an__obiect ‘of ‘my presentin
ventio'njtp provide. an improved diaphrae
oi'hiet'al castings and thelov'ver sectionr-?‘is‘pre'f
at its‘low’er end‘havingg a?uid-intake passage-Eb
Tformedtherein and as shown, being'externa-lly
th'r‘eade'dinltWo ‘zones of di?er‘entdiamete'r, in
‘adaptor‘fa'shi'on for-threaded connection with'a
soéke't‘of‘topbfa container such as a-tank or
‘ “i5L 1D,
era'bly‘provide'd with an axially aligned boss_6a
eqaniedfer quite .11
5.
‘f?e‘s the structureand inoreasesth'ee?i iencya _
(durability of 'my earlier
a
.
-
‘ ‘ More ‘speci?cally, it isf'ari ObJiBQ?itopl‘QVidB?
diaphragm assembly of ilnprove‘d‘ief?cie' {and
’
he
'awe-termed,centrallyane Medellin-“sinned; dL
faphragmtconstructed.oflltein orced‘,’?ex“ible and "
elastic‘ ‘material, lprrepferabl‘yj th Zrubbjer,
,
,
,
i
,
_
,l.5
which is vso related *évithlitsrne?ns ,fohattdqjhrh?ht
is the pump. housing . and in the humping’ d,
'asft'o haveawr‘olllin'?g action when the‘__di ‘h an
i'sieversedrrom uptle'rm‘
‘
barrel.‘ Internally, the medial and somewhat re
stricted portion of‘ the passage 6b may be threaded
ante/“for ‘anattachment to an extension intake
pipe, not “shown, ~The body‘ of_ casing section 6,
internally-forms an intake chamber-I‘at thelower
‘end of whichand as shown, insertedin the'uppier
end'ofintake‘passage-iib, is mounted an annular
Valve seat-'8, ‘preferably constructed of brass or
_
iioln'endiv‘ 18,-.V?rsathiz'r bylmaterial
'tlleidurgbllity
?flilfther', .Qbi§.¢?
ofrmydevicef
jisthe'
some ‘other’ non-corrosive “metal and having" a
sinooth,_circiilar'upper edge, de?ning the'iseat
proper; A ‘flat, disc valve 9 of somewhat larger
diameter than the seat'member 8, cooperates
with the annular seat and is guided in its vertical
the ‘class ‘described, ofia
llel?w?-lwith,valll??i?l?a
’
vide an automatic orainiieature i‘orlthe" ,
nio'vementby 7a plurality of lugs "60!, which may
Pilimp
be integrally cas‘t'in the lower portion of the in
terior' of-éa'sing".’section~35. A valveretaining plate
.ths'ldianh a
_
" "
’
unusual and fully ‘lowered rel'atl .
" ‘A still flirt/her 1016195115 ‘is the‘ Provision, of vMaggi
impreved'me'ans
tiQafOfieinfQr?ng
in‘ and
diaphragm
semen?
‘mi 10190
‘
" “
‘tiénbfihei?exible'diebhr
'
30 in ‘in the vforin" of a. metal disc, is attached by
suitable. means ‘as screws 1 lfacross the tops of
theseveral lugs ‘6d and a light; spiral spring [2
isinte'rposed- between retaining disc andthe upper
‘
r9‘? as ‘W611 ‘as to provide a‘ .
su‘r'fade o'f tli'e'"disc valve 9, ~urging the'valve to
‘the valve disposed between . _
lowerand ‘closed position. A mounting strap i3
35
charge members of the sump;
‘ "
is'?xed .to the upper side of valve retainer plate
"' T' é and“ ther qbiectsand adrantasesgf my
iii and has a horizontally'o?-set outer end 13a
in)’; ,tion iifillllfbemolffi apPareht frd‘m‘lt
ieedescripiien madam‘ c
?ompenyinajcll‘ ‘Wines,
,1
,, A. ._ i
spaced ‘above plate I53, iwhich is apertured in
alignment‘ with an aperture of ‘plate iii to guide
and accomniodate'avalve-releasing stem M which
.
stein‘ like ‘reference
characters refer _ o' the 'sa e __pa_ift_'s throughout
carries atiits‘low‘er end', ‘a, mushroom head 14d,
Fig. _1.is a verticalsectidntaken.axially of the
connecting T95 of theliulpn showings‘, ‘embed
adaptedlto engage against the cap‘ of valve disc
9. ‘A second valve-releasing stem 25 is iixed at
itslo'wér end-by swedging or otherwise, to strap
the several views iand’in which‘;
mslnt of my ,ir'ivention?withpthe' diahh "
"
in ‘full’ lines in extreme .uppern?s _
Shawn ,i'ntdotteii lines
'
'
Fig; 2 is‘? similarly e'w , a
,,
_ ,
assembly‘ showniinl ‘xtrierne lowered‘ no
10w
suchthe
position,
normal'to'o'perate
end of thetwqrkin
valve irele
‘
for drainingthepllmpi'
53 and also retainer‘ plate .iii and is disposed
axially of Ithevpu'mp housing in upstanding posi
tion, for contacting an ,upper disc valve, as will
near the l'owenendof wits I
'
45
I
‘
'
' Fig; 3"is a cross '58‘ ticn iakgnapnroidmately
gin-the line sfssovfr? “Lam,
is
later ,be made apparent.
The diaphragm l is pre-vformed intocup-shape,
59 as shown in Fig. 2 and is preferably constructed
of ,cord fabric embedded or vulcanized in syn
thetic Ari-‘112%?- Synth ic rubber is preferred ‘as
it will retain its ?exibility Without Wear, even if
expend-t0 relatile hyéireqelibee sashes naphtha
55
gas
ne, " _s "well as alcohol, anti-free solutions
",Fig‘. 14 is a cross section taken approximately
and water? The mafgmai edge for ‘diaphragm 1
on‘ the line 4+; o‘frjigp'l'.‘
“
a'_ :jacei'nt its outeriperiphery, .is clamped between
‘ As‘ shown in the drawings'my improved ‘dia
phraglm‘ptump comprises a main‘ casiri
we shall section,
‘
'
‘
tic
'olltt?rned,‘ cooperating attachment ?anges
lidoflthe ii p casing and'is preferably
than eeeillefeeqhpi'ieg and Sealing.
ré'léowdbdii, ‘
‘
2,430,545
4
3
registration a padlock hasp may be secured there
bead ‘la which is received by cooperating annu
lar channels of somewhat smaller diameter, in
the opposed faces of the ?anges 5a and 6a. The
central portion of the preformed, cup-shaped dia
phragm ‘I, is circularly apertured to form a com
through.
As shown, the lower bossed portion of the lower
casing section 6 may be provided with an air
admission port Ee communicating from the ex
terior of the casing and connecting with the in
munication passage between lower or intake
termediate portion of the ?uid-intake passage 6b.
chamber I and the upper or discharge chamber
An upstanding collar 6]‘ as shown, is integrally
D, of the housing. A valve-contained reinforcing
formed in the bottom portion of casing section
head is attached to the marginal portion of dia
phragm ‘l, de?ning the said communicating pas 10 6, disposed axially of the valve seat member 8
and spaced therefrom. This collar 6)‘ is substan
sage and preferably, consists in a pair of concen
tially aligned with the mushroom head Ma to
tric, reinforcing rings l6 and I1 respectively, the
limit downward movement thereof in the unseat
lower of which, it, is of somewhat smaller inter
ing of disc valve 9.
nal diameter than the upper ring ll’, to expose a
I prefer to provide a stop-bushing 22a, rigidly
?at, marginal portion of the central apertured 15
connected with the lower portion of connection
part of diaphragm l, which constitutes an annu
rod 22., to limit the upper movement of the dia
lar valve seat for the upper disc Valve l8, when
phragm assembly in the upward stroke of the
the two reinforcing rings 16 and I1’ are secured
and clamped together, upon the central portion of r
the diaphragm, as shown in Figs. 1 and 2. The
20
pump.
Operations
said reinforcing rings I6 and i‘! may be clamped
against the diaphragm and secured together by
When the operating handle 25 is lifted from
the position shown in Fig. 1, the diaphragm head
and diaphragm are thrust downwardly, slightly
noted that both of the reinforcing rings i6 and
below
the position shown in dotted lines, at such
H are of shallow dish-shape to provide out 25
time, the ?uid pressure causing the lower valve
turned and opposed, rounded or partial-spherical
to seat and close the intake passage and to
surfaces, which permits rolling and ?exing of the
open against the tension of spring 2|, the upper
diaphragm in its pumping stroke without bend
Valve I8 controlling the communication between
ing the material on any predetermined circular
the intake and discharge chambers of the cas
line. The upper reinforcing ring 11, at its cen
ing. When handle 25 is next depressed, the
tral portion, has extending upwardly therefrom,
diaphragm head and diaphragm is elevated to
and preferably integrally formed therewith, a
the position shown in Fig. 1, thereby producing
plurality of symmetrically arranged, guide arms
a
strong suction stroke which closes valve 18 in
11a, disposed in the corners of an imaginary poly
the head of the diaphragm and causes opening
gon and spaced apart with suitable clearance for 35 of the intake disc valve 9, drawing ?uid into the
guiding the disc valve 18 in its vertical move
intake chamber. The next successive downward
ment. A cap member 20 ?ts over the upper ends
stroke of the diaphragm forces ?uid from the in
of the rigid arms Ila and is spot-welded or oth
take chamber I upwardly into the discharge
erwise rigidly secured thereto, to con?ne the disc
chamber and the next lifting stroke of the dia
valve l8 and to complete the head of the dia
phragm discharges fluid through the discharge
phragm, as well as to furnish a base of resist
spout S, while simultaneously drawing in addi
ance for a spiral spring 2f, the lower end of
tional ?uid through intake passage 5b into the
which reacts against the top of disc valve 18. A
intake chamber 1. Thus, in operation, the dis
vertical pump or connecting rod 22, has its lower 45 charge of fluid from my pump, is positively effect
end connected to the reinforced head of the dia
ed; no priming is necessary and the device is
phragm by suitable means such as swedging its
positive-acting and has a high capacity for de
diminished extremity against the underside of
livery. In the movement of the diaphragm as
cap member 2!}. The pump rod 22 extends up
sembly, the pre-formed, cup-shaped diaphragm
wardly through an aperture in the upper por 50 rolls throughout a major portion of its area, about
tion of easing section 5 and it is provided with
the curved surfaces of the clamping or reinforc
a packing gland, designated as an entirety, by
ing rings 16 and I7 and near its outer marginal
the letter P. An upstanding clevis pin 23 is piv
edge, about the opposed curved clamping surfaces
oted at its lower end to a suitable attachment lug
of the connected sections 5 and 6 of the casing.
5b, provided at the upper portion of easing sec
55 This major rolling action is further facilitated
tion 5 and is fulcrumed, by a pin 25, at its upper
by the circular-cross sectional head 1a of the
end, the handle lever 25, the short working end
diaphragm and there is no folding or ?exing
suitable means such as rivets, l9.
It will be
of which is secured to the upper and somewhat
reduced end of connection rod 22 for limited lost
motion or cushioning play, To this end, as shown, ‘
of the material along any one or set of de?ned
circular lines, in the reversing of the diaphragm,
60 from the position shown in Fig. l to the posi
handle 25 in the form of a casting, is bifurcated
tion shown in Fig. 2. The rolling action of the
at its connected end 25a and provided with a
diaphragm takes place when viewed in cross sec
tion, along reverse curves and the wear is thus
tured to receive the reduced upper extremity of
greatly reduced and not imposed upon a narrow
pump rod 22. A short coil spring 21 is interposed 65 zone or zones of the diaphragm, but is distributed
transverse, heavy pin 26 which is vertically aper
between the pin 26 and a nut 28, having threaded
engagement with the extremity of the reduced
in this compound rolling action, throughout sub~
stantially the entire area.
When pumping operation is completed and it
is desired to drain the casing, the handle at its
To lock the handle against operation when it
is desired, a short link 29 is provided, pivotally 70 free end, is swung upwardly to extreme position
beyond that normally assumed in operation which
connected with the intermediate portion of the
in turn, lowers the diaphragm head to the ex
clevis 23 and the outer end of which is apertured
treme position shown in Fig. 2, whereby the
at 29a for registration with a locking aperture
lower, reinforcing ring to, strikes against the top
251) formed in the intermediate portion of handle
lever 25. When said apertured portions are in 75 of valve-releasing pin l4, causing the mushroom
upper end of connecting rod 22.
7
5
2,430,545
6
head Ilia to engage and open the valve disc 9,
valve releasing member ?xedly mounted in said
by fulcruming the disc at one side of its annular
intake compartment independently of said head
valve seat. Simultaneously, in said extreme low
and valve associated therewith and having a por
ering of the diaphragm, the upper valve disc 18
tion opposed to the valve associated with said
is engaged and raised by the stationary valve
head for striking and unseating said valve for
releasing pin 15. Thus, with both the lower and
drainage purposes when said diaphragm is moved
upper valves, 9 and [8, opened and with air port
in one direction beyond its normal operating
6e provided, substantially all ?uid contained in
stroke.
both intake and discharge chambers of the pump,
4. A diaphragm pump comprising a casing, a
return by gravity, to the source of supply or tank. 10 transversely disposed diaphragm dividing said
With the structure of my reinforcing head,
easing into a ?uid-tight intake compartment and
including the reinforcing rings I6 and 11, the up
a ?uid-tight discharge compartment, an intake
standing rigid arms l'la and welded cap member
port and a discharge port in said casing, a cen
22, a very simple, e?icient means is provided for
tral passage in said diaphragm for connecting
not only reinforcing the central portion of the 15 said two compartments, a reinforcing head se
diaphragm, but also con?ning the upper disc valve
cured to the central portion of said diaphragm, a
18 and guiding it in its vertical movement as
valve associated with said head for controlling
well as connecting the diaphragm in an e?icient
?ow of fluid through said passage, said intake
manner With the pump rod 22.
port at its inner end, being opposed to the central
It will, of course, be understood that various 20 portion of said diaphragm, a valve associated with
changes may be made in the form, details, ar
said intake port for controlling the same, a
rangement‘ and proportions of the parts without
plunger member slidably mounted in said intake
departing from the scope of my invention.
compartment and having‘ an end disposed against
What I claim is:
said intake valve, said plunger member having an
1. A diaphragm pump comprising a casing, a
upper end opposed to a zone of said reinforcing
transversely disposed diaphragm dividing said 25 head whereby said intake valve will be opened for
easing into a fluid-tight intake compartment and
drainage when said diaphragm is moved in one
a fluid-tight discharge compartment, an intake
direction beyond its normal operating limit.
port and a discharge port in said casing, a central
5. A diaphragm pump comprising a casing, a
passage in said diaphragm for connecting said two 30 transversely disposed diaphragm dividing said
compartments, a reinforcing head secured to the
casing into a ?uid-tight intake compartment and
central portion of said diaphragm, a valve asso
a ?uid-tight discharge compartment, an intake
ciated with said head for controlling ?ow of ?uid
port and a discharge port in said casing, a central
through said passage, said intake port at its inner
passage in said diaphragm for connecting said
end, being opposed to the central portion of said 35 two compartments, a reinforcing head secured to
diaphragm, a valve associated with said intake
the central portion of said diaphragm, a valve
port for controlling the same and valve releasing
associated with said head for controlling flow of
mechanism comprising a pair of pins each having
fluid through said passage, said intake port at its
an end opposed to one of said valves and mount
ed for response to the movement of said dia
inner end, being opposed to the central portion
operation stroke to release and open said valves
seat and having a marginal portion projecting be
40 of said diaphragm, said inlet port having a pro
phragm in one direction and beyond the normal ' jecting annular seat, a valve disposed over said
for drainage of said casing.
yond said seat, a plunger member slidably mount
ed in said intake compartment and extending lon
transversely disposed diaphragm dividing said 45 gitudinally of said intake port and having an end
easing into a ?uid-tight intake compartment and
disposed against the marginal edge of said intake
a ?uid-tight discharge compartment, an intake
valve, said plunger having an upper end opposed
2. A diaphrgm pump comprising a casing, a
port and a discharge port in said casing, a cen
to a zone of said reinforcing head whereby said
tral passage in said diaphragm for connecting
intake valve will be tilted for drainage when said
said two compartments, a reinforcing head se 50 diaphragm is moved in one direction beyond its
cured to the central portion of said diaphragm, a
normal operating limit.
valve associated with said head for controlling
6. The structure set forth in claim 5 and a
flow of fluid through said passage, said intake port
transverse member in said intake chamber where
at its inner end, being opposed to the central por
in said plunger is mounted and a Valve-operating
tion of said diaphragm, a valve associated with 55 pin secured to said member and having an end
said intake port for controlling the same and a
opposed to said valve associated with said head
valve releasing member mounted in said intake
to open the same when said diaphragm is moved
compartment to open said intake valve and hav
in one direction beyond its normal operating limit.
ing an element opposed to a portion of said re
WALTER F. WESLEY.
inforcing head whereby said intake will be opened 60
for drainage when said diaphragm is moved in
REFERENCES CITED
one direction beyond its normal operating limit.
The following references are of record in the
3. A diaphragm pump comprising a casing, a
?le of this patent:
transversely disposed diaphragm dividing said
UNITED STATES PATENTS
easing into a fluid-tight intake compartment and
a ?uid-tight discharge compartment, an intake
Number
Name
Date
port and a discharge port in said casing, a cen
39,259
Holly ____________ __ July 14, 1863
tral passage in said diaphragm for connecting
768,984
George ___________ __ Aug. 30, 1904
said two compartments, a reinforcing head se
1,484,115
Eells _____________ __ Feb, 19, 1924
cured to the central portion of said diaphragm, a 70 1,562,069
Arringdale ________ __ Nov. 17, 1925
valve associated with said head for controlling flow
2,314,745
Wesley __________ __ Mar. 23, 1943
of ?uid through said passage, said intake port
FOREIGN PATENTS
at its inner end, being opposed to the central por
tion of said diaphragm, a valve associated with
Number
Country
Date
said intake port for controlling the same and a 75
505,510
Great Britain _____________ __l939
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