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Патент USA US2115266

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April 26, 1938.
E. M. JOHNSON
2,1 15,266
CONDUIT CLEANING TOOL
Filed May 3, 1937-‘
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INVENTGR.
Emery 0447077775011
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2,115,266
Patented Apr. 26, 1938
UNITED" STATES PATENT OFFICE
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2,115,266
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comers cLEANme TOOL
Emery M. Johnson, ‘Detroit, Mich.
Application May 3, 1937, Serial No. 140,330
1 Claim.
(c1. 15404.30)
This invention relates to a cleaning tool, and
particularly to one for cleaning pipes such as
sewer pipes or other similar conduits.
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The invention is directed particularly to a tool
5 designed to be attached to the so-called plumber.’s
tape, or a plumber’s ‘chain for that matter, and
to be projected into a pipe. The object of the
invention is to provide an improved .tool which
can be projected into a mass of material or sub—
stance which may be constricting or'plugging the
pipe. To this end the tool hasp-rojecting tines
which extend forwardly, relative to the direction
in. which the tool is pushed into the pipe,‘ and.‘ are
of a pointed nature so as toqpenetrate into a
"15;
mass of plugging or constricting material. The
tines are provided with projections or barbs
which incline rearwardly, or in other words such
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structed in accordance with the invention illus
trating the same lying. upon the wall of a pipe
and showing one tine in cross section.
Fig. 2 is a view of another form of the inven
tion.
Fig. 3 is a cross sectional view taken substan
tially on line 3-3 of Fig. 1.
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Fig. 4 is a view of a ‘modi?ed form illustrating
the conically shaped helical spring element‘.
The wall of asewer pipe or other conduit is 10
illustrated ‘at I. In the form shownjin Fig. 1 the
body comprises a piece 2 with a slot at 3 designed
to receive the end of. a so-called plumber’s" tape 4.
These tapes are long lengths of ribbon-like metal
of fairly thick stock so as to give a considerable 15
rigidity and strength thereto. The end of the
tape may be located in the slot and secured there
as to catch into the constricting substance so as
in as by means of screws 5 arranged to pass
to pull the same out of position when the tool is
pulled out‘ of the pipe. The tines are shaped as
to provide runner-like portions upon which the
tool may slide as it is pushed into the pipe, with
the projecting ends of the tines located radially
inwardly from the runner-like portions so that
they will not catch on joints or the like of the
through the tape which is apertured forthe pur
pose. A forward body ‘portion is illustrated at 6
which preferably has a tapering forward end ‘I.
pipe.
The body of the tool is preferably centrally
disposed so that it is held spaced from the interior
walls of the pipe by the runner-like portions, and
‘.0 this body is preferably relatively small in cross
section. so that the body itself may be projected
The two portions 2 and 6 may be connected and
joined into the body portion of the tool by means
of a coil spring 8 fastened at its ends to the re
spective pieces through the means of extending
portions 9 and ID.
A plurality of tines are carried by the body
member particularly the piece 6 as shown in Fig.
1. As illustrated in Fig. 3 there are four of such
tines generally illustrated at l l. The end of each
tine is secured to the body and extends in a
into a mass of material which is constricting or
direction radially outwardly and is formed prefer
choking the pipe. The tool is designed, and is of
such proportions, that it may be projected around
corners and bends, and to this end the body may
include a spring portion which is ?exible so that
ably on a radius to provide a runner-like portion
l2. This radius continues to a bend line l3 posi
tioned radially inwardly from the runner por 35
the same may bend or be distorted.
forwardly and preferably have sharpened ends
The spring
may be used where the body is relatively long,
although the invention contemplates a rigid body,
tions, and from the bend line l3 the tines project
as shown at (4.
While four of such runners are
illustrated, it will be appreciated that the inven
tion is not limited to this number.
40
The tool also preferably has a central tine l5
A further structure may be incorporated which ' projecting axially from the body and having a
is in the nature of a conically shaped helical wind
pointed end I6 which may project slightly beyond
ing of spring metal which is ?exible so that it the ends I4 of the other tines. These tines are
45 may shift to permit material to pass thereover provided with projections or barbs inclined rear 45
as the tool is pushed forwardly into the pipe wardly, as illustrated at It, which may be formed
and which will serve to engage some of the con
by struck-out portions integral with the tines as
stricting material for drawing the same out of the illustrated. Each tine ll may have one barb,
pipe. This conically shaped helically wound ele
while the central tine may have four barbs, two
50 ment may be positioned centrally of the tool and positioned relatively forwardly and diametrically. 50
with its apex positioned forwardly relative to the opposite each other, and two positioned relatively
direction of movement of the tool as it is pushed rearwardly and diametrically opposite each other.
into the pipe. ,
The form shown in Fig. 2 is generally of the’
40 in which case the body may be made shorter in
axial extent.
In the accompanying drawing:
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Fig. 1 is a side elevatlonal view of a tool con
same structure having the same tine arrange
ment, and the same reference characters are em
55
21'
2,115,266
'ployed as tothese, parts. In this form, however,
element [1 in the manner already described where‘
the body does not incorporate the spring, and this
body may be relatively short in axial extent. The
body is illustrated at 26 and may be an integral
piece of metal. The tape is secured to this body‘
such spring is used. After the tool has been ‘so
projected into the pipe, and lodged so to speak,
in the material, it may then be pulled out of the‘
pipe by the use of the tape and the barbs on the
in the same manner as it is secured in the form
tines and the spring-where such spring is used,
shown in Fig. 1. The forms shown in Figs. 1 and
catch into the material and withdraw the same
from the pipe. Asillustrated in Fig‘. 3 the body ~
of ‘the tool is small in diameter and in some in
2 are not referred to as being, one preferred and
one not preferred, as some users may desire one
and each form‘may be especially adaptable to
stances the body itself [may be projected into the
material where such material is not too tightly
different conditions of use. -
compacted.
form and other users may desire the otheriform,
.
The modi?ed form illustrated in Fig. 4 has the
same tine arrangement and the same reference
characters are applied, but in this form a spring
element I1 is illustrated as applied tothe center.
tine. This spring element may be of a conical
shape with helical-like convolutions positioned
with the apex adjacent the end of the tine l5 and
attached thereto. This spring'is rather ?exible
so that material may shift the‘ spring sidewise as
the tool is pushed'forwardly', so that the mate
rial, or some of it, may be lodged between the tines
and to the left of the base end of the spring as
" Fig. 4-is viewed.
Then, as the too-l is pulled rear
wardly this element ‘catches the material and
aids in withdrawing the same.v
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The runner formation is of considerable advan- ‘
tage in that off-set pipe joints or other solid
projections inside the pipe do not materially
interfere with feeding the tool into the pipe. 20
The radius of the runner I2 is such as to provide
for sliding over such projections. ‘
I claim:
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A tool for cleaning sewer pipes or similar con- '
duits comprising, a body portion adapted to be 25
secured toa tape or chain for projecting the tool
into a pipe, a plurality of tines carried by the
body and extending radially outwardly ‘therefrom, ‘7
In use, the tool is fastened to the end of a
plumber’s tape, or it maybe fastened'to the end ~ said tines having radially outwardly positioned
530 of a plumber’s chain, which-is a linked device parts‘ forming runner portionsv for sliding along
designed to perform operations similarito a tape,
and then the tool is projected into the pipe. As
itris ‘fed forwardly into the pipe the runner por
tions [2 engage with and slide along the} interior
surfaces of the pipe.‘ In this'manner the project
ing tines are held-spaced from the walls of the
pipe so that they do not catch upon pipe joints
or other projections. The sharpened tines may
be projected into a mass of plugging or contrict
ing material, some of which may pass, the spring
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The tool embodies what is believed to be a
sound structure, one which is not unduly large»
and unwieldy, and embodies no moving parts,
and therefore will last over a long period of time.’
.39
the inner walls of the pipe‘, said tines having end ,1
portions extending away‘from the body portion
and positioned radially inwardly from the runner
portions, whereby the projecting ends are held
spaced from the pipe walls, said tines adapted to
project into a mass of constricting material, and
means on the tines forcatching in the mass of
material as the tool is withdrawn from the piper .
EMERY M. JOIg-ll‘ISOl‘T.v
40 "
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