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Jan. 7, 1947.v`
lPLUrvmE'R’s T_ooL_
-Filed. Sept. 21, «1945 _
,@0654 '
Patented Jan. 7. 1947
Pete Rosa, Oakland, Calif.
Appiication September 21, 1945, Serial No. 617,843
1 Claim.
(Cl. 15m-104.05)A
The present invention relates to plumber’s tools
and more particularly to a device to be used
in cleaning stoppages in pipes or the like by the
application of iiuid pressure.
Waste pipes and sewers and the like often be
come filled with solid or semiesolid material
which causes a stoppage of normal flow through
the pipe but which can be dislodged and cleared
by the application of pressure followed by a ñoW
of clear water through the pipe. The moet con»
venient source oi’ liuid under pressure is usually
member I9 secured in place by a clamp 2B. The
opposite end of the length of hose I8 which is
not shown is adapted to -be connected with a
water tap so that water under pressure may be
supplied through the pipe I3 and bulblike mem
ber l c under control of the valve I5.
The bul'blike member I0 is of a size to ñt snugly
within a waste line as a standard size of Waste
pipe ‘I and when it is designed for use with the
standard four inch pipe it will also ñt into the
trap portion of a toilet bowl where stoppages fre
a fresh water line to which an ordinary haii or
quently occur. The pipe I3 may be of any length
three-quarter inch garden hose may be con
but preferably of two and a half or three feet so
that it provides a convenient handle for manipu
nected. it is not, however, convenient to make
a connection between such hose and the larger 15 lating the bulblike portion I0 and as the valve I5
is positioned directly adjacent the end of this
size pipes used for waste lines. It is toa device
for making the latter connection that the present
handle, it is in the most convenient position to
invention is directed.
control the ñow of water through the device and
“It is an object of the present invention to pro
to provide either a steady or an intermittent flow
vide an improved device for clearing waste lines 20 as required.
and to provide a device having improved means
In operation of the device, when a stoppage
for forming a quick and simple connection with
occurs in a pipe, the hose i3 is connected to a
a waste line, such connection being capable of
convenient outlet and the bulblike portion It is
forming a perfect seal and withstanding pressure.
inserted into the toilet bowl or portion of the pipe
Further and more speciñc objects and advantages 25 behind the stoppage after the pipe has been made
of the invention are made apparent in the fol
accessible by remo’vtal ci a cleanout plug or by
lowing specification wherein reference is made
removing a convenient joint or the like. The
to the accompanying drawing.
diameter of the bulb itl is such that it provides
a snug but slidable ñt against the inner wall of
in the drawing:
Fig. l is a View in side elevation of a device 30 the pipe and a iluid tight seal is formed between
the exterior of the bulb and the interior of the
embodying [my invention; and
pipe wall by virtue of two structural features of
Fig. 2 is a similar view of a portion of the device ‘
the bulb. One ci these features is the size of the
shown in Fig. _l with a part shown in section and
opening ii which is considerably smaller than
illustrated as disposed inside a pipe.
the diameter of the bulb but slightly larger than
The invention as shown in the drawing com»
the internal diameter of the pipe I3 through
prises a resilient hollow bul‘bous member I@ which
which the water under pressure is supplied. Con
may be made of rubber or similar material and
seduentiy, the water may flow through the bulb
which, for reasons presently to be made apparent,
is of substantially spherical but slightly elongated
bulb and the small diameter of the outlet open
ing lâ, a slight pressure will be exerted within
At one end the bulblike member Ib is
provided with a discharge opening lI and dia»
metrically opposite such opening there is pro
vided an inlet opening il surroundedrby a neck
portion l2 formed integrally with the member IS
in order that it may be secured to one end of a
Because of the spherical shape of the
the bulb which will tend to distend its walls. . The
second feature is that the bulb is slightly elon
gated in shape so that it has a central portion
oi substantial width contacting the inner wall oi
the pipe which is .shown at 'l in Fig. 2. The width
of such central portion which normally contacts
the pipe is indicated in Fig. 2 by the arrow a.
piece of pipe I3. A clamp i4 or other convena
tional means may be employed for securing the
bulblilie member lc to the pipe I3. A valve I5
Consequently, as the result of even a slight pres
is connected with the opposite end of the pipe I3
to control the iiow of Water therethrough and a 50 sure tending to clistend the wails of the bulblike
member 6c, two sections of the bulb adjacent
hose adapter, which comprises a nipple I5 and
opposite ends of the central portion which con
the female portion il of a standard hose coupling,
tacts the pipe 'l are distended, as illustrated in
is employed to form a connection between the
dotted lines at 8„ into sealing contact with the
valve and a length of standard garden hose I8
which includes a conventional male hose coupler 55 inner wall of the pipe. In the event that the
pressure in the pipe between the stoppage and
the bulb i0 is built up because of resistance of
the stoppage to being dislodged, the greater pres
sure is transmitted back _into the bulb through
what internal pressure is applied the bulb will
not be dislodged.
I claim:
the opening Il and is added to the original pres
sure which tends even more to provide a tight
Seal Which prevents the escape of water between
the bulb and the walls of the pipe.
In previously known devices similar in prin
ciple of operation to that shown herein, it has
been found that water pressure insuf?cient to
dislodge a stoppage in a pipe is frequently so
great that the connection with the waste pipe is
dislodged and the water under pressure is re,
leasted at the open end of the waste pipe. In the
present device, however, the design of the bulb
like member Iii is such that even a very low in
ternal pressure will securely seal and ñx it in
position within the waste pipe so that no matter
In a device for cleaning waste lines, a member
for forming a closure within the line and for
forming a connection with a source of ñuid under
pressure, said member consisting of a resilient
hollow bulb of substantially spherical but; slightly
elongated form having its greatest transverse
diameter substantially the same as the interior
diameter of the waste line to be cleaned, and a
connection with an opening thereat forming
communication between the interior of one end
of said bulb and a source of ñuid under pressure,
said bulb having an opening in its opposite end
at least as large as the opening at said connec
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