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Jan. 7, 1947.
T. LANGAN
2,414,046
BILGE PUMP
'
Filed July 17, 1945
2 Sheets-Sheet 1
Thomas Lamp“,
36%
774M?“ g.
-
Jan. 7,\ 1947.
T. LANGAN
‘
2,414,046
BILGEZPUMP
Filed July 17, 1945
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Patented Jan. 7, 1947
2,414,046
UNITED’ ' STATES PATENT OFFICE
2,414,046
BILGE PUMP
Thomas Langan, Annapolis, Md.
1
Application July 17, 1945, Serial N0. 505,594
3' Claims. (Cl. 103-150)
‘This invention relates to deformable chamber
pumps of the diaphragm type, and more particu
larly to the top construction thereof and the
operating means for the diaphragm.
The primary object of the invention is to pro
2
casing when the pump is inoperative so that the
operated handle will not project upwardly from
the pump casing.
This and other objects will be apparent from ,
speed, simplicity in operation, compactness and
the following speci?cation and drawings, in
which:
Figure l is a top plan view of the pump casing,
ruggedness are of the essence. These require
ments seem to congregate in the bilges of boats
pump.
vide a manually operable pump capable of han
dling large volumes of water or other ?uid where
wherein all too frequently the bi1ge water is not
noticed until it has become a demonstrated
hazard.
To meet the above requirements, it is intended
to provide a pump having, a low intake ‘and de
livery tube-like box, having intake and exhaust
and
Figure 2 is a vertical sectional view through the
Referring now to the drawings, particularly
Figure 2 thereof, reference numeral I indicates a
base framework adapted to support the pump in
any suitable manner, while reference numeral 2
15 indicates a rectangular elongated hollow box,
preferably formed of sheet metal, and having an
flap valves spaced therealong and operated in the
same direction, a relatively large chamber above
open inlet 4 and an open outlet 5 therein. An
and water is driven under atmospheric pressure
with inlet and outlet pipes or conduits which may
nularly apertured plates 6 are secured to the box
the tube-like box and positioned above the in
take and exhaust ?ap valves, the chamber having 20 end for mounting threaded pipe sections 1, the
pipe ‘sections 1 being preferably welded to the
a large actuatable diaphragm therein whereby,
apertured plates 6,‘ as‘ indicated, the threaded
when the diaphragm is lifted upwardly to expand
pipe ?ttings ‘I permitting threaded engagement
the chamber, the exhaust valve is pulled closed
be arranged to suit the needs of the particular
through the intake valve and when the dia 25 problem.
phragm is driven down to compress the chamber
Valve plates 8, comprising annular apertured
the intake valve is closed and the water is driven
out through the outlet valve. A more speci?c
object of the invention is in providing a substantially continuous chamber from the tube-like i
box with the diaphragm chamber positioned so
that the diaphragm chamber will have a direct
pressure action upon the tube-like box chamber,
thereby permitting the diaphragm to be actuated
in short easy strokes without sucking air from the
intake as the bilge water recedes towards the
level of the intake opening. With this particular
relationship, there is provided a diaphragm of
rectangular plates of the same width as the box
2, but considerably longer than the height there
of are welded as at 9 to the top and bottom of the
box 2, and so as to be inclined in the same direc
tion. Apertures in formed in the plates 8 have
Valve coverings therefor, the valves comprising
flexible rubber discs II which are bolted as at I2
to the upper faces of the plates 8, the discs being
su?iciently larger than the apertures l0 so as to
form a seat therearound. The rubber discs I I are
weighted and ‘reinforced by suitable discs 13 and
M, the discs l3 and I4 being bolted to the rubber
?exible, preferably resilient material such as rub
disc H as at 15.
‘
her, a reinforcing stiff central portion connected 40
The box 2 is provided with an opening in the
to the diaphragm, substantially centrally thereof,
upper wall thereof as generally indicated by ref
erence‘ numeral l8, which opening is positioned
between the valves and extends directly into the
arm is provided with two handle openings, one
of said openings being capable of frictionally re 45 lower portion of the diaphragm compartment.
The diaphragm compartment is formed by a
ceiving an operating handle.
,
lower casing or shell 2!! which is Welded or other
Still more speci?cally, it is an object of the
wise secured in sealing relationship to the upper
present invention to provide an upper housing or
portion of the box 2. The shell 20 terminates in
casing for the diaphragm ‘chamber having a well
its upper portion with an annular flange 2| so
extending thereacross into which the crank arm
that the lower shell 20 may be bolted to the up
is adapted to operate in order to provide a com
lugs upstanding from the reinforcing central por~
.tion attachable to a crank arm wherein the crank
per shell‘ 22, theupper shell also terminating at
its
lower portion in an annular ?ange 23. The
Still another- object of the invention is to per
flanges. 24 and
are preferably bolted together
mit the actuating handlefor the crank arm to, be
housed within thewell ofjthe upper diaphragm ,, ' at a pluraiity of spaced.’ points as. at 24,, such con,
struction permitting a clamping action about the
pact housing pump structure.
2,414,046
This application is a continuation-in-part of
periphery of a ?exible resilient rubber diaphragm
25. The diaphragm 25 has bolted thereto, and on
the under side thereof, a metallic disc-like mem
ber 26, and on the upper side thereof a disc-like
member 21, the'two discs 26 and 21 being bolted
to the ?exible diaphragm 25 substantially cen
trally of the latter by means of suitable bolts 28.
Cross bars 29 are secured to the inner portion of
the lower shell 20 in any suitable manner so as
to act as a bottom stop for the ?exible diaphragm,
the bars 29 being so positioned to contact the
lower disc 26. The upper disc 21 is provided with
a pair of spaced upstanding lugs 30, the lugs 33
having elongated, substantially horizontally ex
tending lost motion slots 3! therethrough,
The driving means for the diaphragm includes
a crank arm 32 pivoted by pin 33, the pin 33 being
secured through plates 34 (see Fig. l) which
plates 34 are secured to either side of a deep well
35 formed in. the upper shell 22. This well 35
extends substantially through the diameter of the
shell 22 for reasons hereinafter explained. The
lower end of the crank arm 32 is secured to the
my co-pending application Serial No. 562,654,
?led November 9, 1944, for Bilge pump, issued on
August 14, 1945, as Patent No. 2,382,797.
I claim:
1. In a pump of the type described, passage
means forming an elongated substantially hori
zontal passage having inlet and outlet openings
therein, one-way valves operating in the same
direction spaced along said passage, a chamber
positioned above said passage, an opening in the
upper portion of said passage means forming a
continuation of said horizontal passage into said
chamber, said chamber being formed of a rigid
shell having upper and lower portions, the lower
portion of said shell contacting the upper por
tion of said passage means and being secured
thereto, a ?exible elastic diaphragm extending
substantially horizontally across said chamber
20 and having its edges clamped between the upper
and lower portions of said shell, means positioned
in said shell adjacent the upper portion of said
horizontal passage adapted to contact said dia
upstanding lugs 30 by means of a cross bar 40,
the cross bar extending through the elongated
slots 3 l.
'
The upper portion of the crank arm 32 is pro
vided with two cylindrical apertures 4i and 42
for the insertion of a crank handle'43. These
apertures are offset from one another to a degree
slightly less than ninety. The crank handle 43
may be secured within either of the cylindrical
openings 4! and 42 by frictional engagement
therewith or by means of a suitable cotter pin 44.
In operation, the handle 43 is preferably in
serted in the cylindrical opening 42 of the crank
arm 32 and is pulled back to rock the crank arm
phragm to act as a stop therefor for preventing
the diaphragm from entering said horizontal pas
sage, plate means secured to the upper side of
said diaphragm, upstanding lugs on said plate
means, means for reciprocating said diaphragm
comprising a crank arm, one end of said crank
arm being connected to the upper portion of said
upstanding lugs through lost motion connection
means, means pivotally connecting the other end
of said crank arm to the outer edge of said shell,
a handle for rocking said crank arm, and a well
formed in the upper portion of said rigid shell
into which the handle for rocking the crank arm
is adapted to be housed when in inoperative posi
tion.
32 about its pivot pin 33. During the initial
2. In a pump of the type described, passage
stroke of the crank arm 32, the cross bar 40 will
means forming an elongated substantially hori
slide somewhat in the horizontally extending lost 40 zontal passage having inlet and outlet openings
motion slots 3| formed in the upper portion of
at the opposite ends thereof, respectively, one
lugs 30. Thereafter, the lugs 30, together with
way valves operating in the same direction spaced
the discs 21 and 25 will raise the ?exible dia
along said passage, a chamber positioned above
phragm 25. The vertical movement of the dia
said passage, an opening in the upper portion of
phragm is obtained through the free end of the
said passage means forming a continuation of
crank arm 32 and partakes of an arcuate course
said horizontal passage into said chamber, said
because of the lost motion slots 3|. As the dia
chamber being formed of a rigid shell having up
phragm is raised, the inlet valve is opened by
per and lower portions, the lower portion of said
bilge water or other ?uid under atmospheric pres
shell contacting the upper portion of said pas
50
sure and the outlet valve remains closed. When
sage means and being secured thereto, a ?exible
the handle 43 is rocked in the opposite direction
elastic diaphragm extending substantially hori
to force the ?exible diaphragm 25 downwardly,
zontally across said chamber and having its edges
the diaphragm chamber is decreased in size and
clamped between the upper and lower portions of
the intake water surges against the upper surface
the shell, a rigid reinforcing element disposed
of the intake valve to drive the latter shut, simul 55 substantially centrally of said diaphragm, said
taneously opening the outlet valve and, in turn,
driving the bilge water or other fluid out through
reinforcing element comprising a ring positioned
on the lower side of the diaphragm, means posi
the discharge pipe.
'
tioned in said shell adjacent the upper portion of
When the pump is not in operation, the handle
horizontal passage adapted to contact the
43 may be removed from the cylindrical aperture 60 said
underside of said ring to act as a stop for said
42 and is inserted within the cylindrical aper
?exible diaphragm to prevent said diaphragm
ture 4|, the latter being so positioned relative to
from
entering said horizontal passage, plate
the crank arm 32 as to lie within the well 35 and
means secured on the upper side of the dia
extend substantially parallel therewith. Thus,
the handle 43 is substantially enclosed by the 65 phragm and overlying the ring and secured to
the latter, upstanding lugs on the plate means,
well 35, and lies ?at within the upper-shell 22
of the pump.
As will be obvious from the foregoing descrip
tion and an inspection of the drawings, the
means for reciprocating said diaphragm com
prising a crank arm, one end of said crank arm
being connected to the upper portion of said
lugs through lost motion connection
present invention provides a simple compact 70 upstanding
means, means pivotally connecting the other end
pump, easily manufactured and formed of sheet
of said crank arm to the outer edge of said shell.
metal, wherein its operation and maintenance
a handle for rocking said crank arm, and a well
are exceedingly simple and the outer contour
formed in the upper portion of said rigid shell
and shape _ thereof attractive and pleasing in
75 into which the handle for rocking the crank arm
appearance.
2,414,046
is adapted to be housed when in inoperative posi-
positioned in said shell adjacent the upper por
t1on,
3. In a pump of the type described, passage
means forming an elongated substantially horizontal passage hav1n<y inlet and outlet openings 5
tion of said horizontal passage adapted to contact
?exible diaphragm to prevent said diaphiagm
from entering said horizontal passage, plate
at the opposite ends thereof respectively, oneway valves operating in the same direction spaced
means secuieq on the upper side of the dia
phragm and overlying the ring and secured to
the underside of said ring to act as a stop for said
along said passage, a chamber positioned above
the latter, means for reciprocating said dia
said passage, an opening in the upper portion of
phragm comprising upstanding lugs on said plate
said passage means forming a continuation of 10 means, lost motion slots disposed generally hori
passage means and being secured thereto, a ?exi- 15 ing the other end of said crank arm to the outer
tions of the shell a rigid reinforcing element dis-
ing the Crank arm 15 adapted to be housed When
posed substantially centrally of said diaphragm 20 in inoperative position.
said reinforcing element comprising a ring posi-
THOMAS LANGAN.
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