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Патент USA US3098261

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July 23, 1963
w. H. STEWART, JR
3,098,251
RODDING MACHINE
Filed Nov. 10. 1961
3 Sheets-Sheet 1
206
FIG.|
45,46
as 4815515s
20s
INVENTORZ
WILLIAM H. STEWART,JR.
BY
-
HIS ATTORNEY.
July 23, 1963
w. H. STEWART, JR
3,098,251
RODDING MACHINE
Filed Nov. 10, 1961
3 Sheets-Sheet 2
INVENTOR:
WILLIAM H. STEWART,JR.
BYAWMW-v
HIS ATTORNEY.
July 23, 1963
w. H. STEWART, JR
3,098,251
RODDING MACHINE
3 Sheets-Sheet 5
Filed Nov. 10, 1961
FIG.6.
INVENTQR
76
WILLIAM H.STEWART,JR.
.BY
M
HIS ‘ATTQRNEY.
United States Patent 0 "ice
2
1
companying drawings in which like characters designate
3,098,251
RQDDTNG MAQHINE
3,998,251
Patented July 23, 1963
v
Wiiiiam H. Stewart, In, 391 (Iherry Road, Syracuse, N311’.
Filed Nov. 10, 1961, Ser. No. 151,537
3 Claims. ((11. 15—1tl4.3)
This invention relates to and has as a general object
corresponding parts in all the views.
In the drawings—
FIGURE 1 is a side elevational view of a preferred
embodiment of the invention.
FIGURE 2 is a plan view of the machine shown in
a new and improved sewer rodding machine.
FIGURE 1.
FIGURE 3 is a fragmentary elevational view of a por—
Sewer rodding machines are utilized by municipalities,
public utilities and the like for cleaning underground con
tion of the rod basket.
FIGURE 4 is a fragmentary View of the rod retain
duits such as sanitary and storm sewers, wiring ducts, and
the like. Such machines function to feed either sectional
or one-piece rod through a conduit section, after which
the front end of the rod is connected to a cable provided
ing means for the basket.
FIGURE 5 is a fragmentary view of the drive means
for the machine taken on line 5-5 of FIGURE 2.
FIGURE 6 is a View taken on line 6—-6 of FIGURE 4.
with a suitable cleanout or repair tool such as a cleanout 15
bucket, a root auger, or the like, and the rod and cable
The rodding machine comprising the preferred em~
bodiment of the invention comprises a main chassis made
up of structural side pieces 10 and 512, which are joined
with the tool are then pulled back through the conduit
together at their opposite ends by lower end members 14
section. The tool is normally connected at both ends to
cable so that the tool may be pulled back and forth
and 16, (not shown) and upper end members '18 and 20,
through the conduit. Such machines presently being com~ 20 the members 14 and 16 being suitably af?xed to the mem
bers 10 and 12, as by welding, or the like. Upstanding
mercially used, utilize a cone-shaped basket, which is
provided wtih a power drive to feed the rod in and out of
rear ‘and front legs 21, 22, 23‘ and 24, respectively, are
suitably la?ixed to the side members it} and 12, as by
the basket. The basket is utilized to maintain the rod
welding, and the upper end member 18 is suitably affixed
which is of relatively thick cross~section in a coil within
to the rear legs 21 and 22, as by welding, while the upper
the basket, and to impant a rotative movement to the rod.
end member 26 is in like manner a?’ixed to the front legs
A separate friction feed means is utilized to feed the rod
23 and 24.
forwardly and rearwardly into and out of the basket.
The main chassis is provided with an axle 26, which is
A machine of this general type is shown and disclosed in
a?ixed in any suitable manner to the side members 10
Patent 2,594,256.
In such sewer rodding machines, such as shown in the 30 and 12, and is provided on its outer end with ground
wheels 23 and 39. Finally, the main chassis is provided
above-mentioned patent, the rod utilized in the machine
with 3 structural members 3%), 3i and 32, which are
is of the sectional variety and the sections are connected
af?xed to the rear end and leg members $14, 21 {and 22,
together by couplers. As will be obvious, sectional rods
respectively. The members 39, 31 and 32 are joined to
of this type are weakest at the couplings between the sec
gether at their outer ends (not shown) and are provided
tions, and it has been found in practice that such rods in
with a trailer hitch, or the like, to permit the machine
variably break at the coupling point between the sections.
to be attached to a tow truck, or the like. Top members
In addition, a specialized feed is necessary with such sec
18 ‘and 20 are each provided with e. pillow block bearing
tional rods in order to accommodate the couplings, which
36 and 38 for a purpose to be hereinafter described.
normally are of a greater diameter than the rod sections.
The reference numeral 40 indicates a basket or reel
Accordingly, machines of the type shown in the patent
supporting frame made up of a pair of square end plates
are undesirable for a number of reasons. For example,
41 and 42, and are joined together at their corners by
the rod receiving the basket is large and cumbersome thus
four rods, 43, 44, 45 and 4-6. The end plate 41 has a
causing the rodding machine to be of unduly large size.
In addition, the feed means ‘for the rod has heretofore 45 tubular stub shaft 148 a?ixed thereto by any suitable means,
and the shaft 48 is journaled in the bearing 36. The
been of the frictional type and must have a relatively
opposite end plate 42 is provided on its outer surface
large feed force in order to overcome the resiliency of
with a brake cylinder 50 for braking means (not shown)
the rod and to prevent slippage. Finally, the sectional
which has a sprocket 52 a?ixed thereto by any suitable
rod is undesirable for the reason above set forth.
means. An arcuate shaped hollow feed-out tube 54 is
Accordingly, it is an object of this invention to provide
a?ixed to the end plate 42, brake cylinder 50* and sprocket
a new and improved sewer rodding machine utilizing a
one-piece sewer rod which may function to selectively
impart a rotative movement to the sewer rod as it is
being fed either in a forward or rearward direct-ion by
selectively imparting a rotative movement in two substan
tially perpendicular planes to the mechanism in which
the sewer rod is mounted or received.
Further, it is an object of this invention to provide a
new and improved rod basket for a sewer rodding machine
' 52 by any suitable means, and the outer end of the feed
out tube 54 is journaled in the bearing '38 whereby the
entire reel frame 49 is journaled for rotation in the ma
chine chassis.
The drive means for the frame 40' comprises a hy~
draulic motor 6% which is provided with a drive sprocket
62 which is connected by an endless chain 64 to the reel
frame drive sprocket 52 whereby the frame 40 may be
wherein the rod basket is provided with new and improved 60 rotated about a horizontal axis in the bearings 36 and 38.
Af?xed between the top and bottom frame rods 45, 43,
means for retaining the rod on [the basket regardless of
‘and 46 and 44- are a pair of structural members 65 and
the number of turns of rod received *on the basket.
It is an additional object of the invention to provide
66 by any suitable means such ‘as welding, or the like,
basket with the same degree of tension regardless of the
ing bearing 68. As best seen in FIGURE 2, the location
one pair ‘of which are shown in FIGURE 1. A?ixed be
rod retaining means for a sewer rod basket with auto
matic tension means to maintain the coiled rod on the 65 tween each pair of the members 65 and 66 is a self-‘align
number of turns or rod received on the basket.
of the members 65, 66, and bearings 68 along the side
pairs of members '46, 44 and 45, 43' is staggered so that
The invention consists in the novel features and in the
the shaft 70 received in the bearings 68' is angularly lo
combinations and constructions hereinafter set forth and 70 cated with respect to the horizontal axis of the frame 10
claimed.
for a reason to be hereinafter described.
In describingthis invent-ion reference is had to the ac
The shaft 70 is the main shaft of the rod basket or
3,098,251
4
reel which is comprised of a pair of hubs 72 and 73, see
FIGURE 1, each connected by a plurality of radially ex
tending channel-shaped spokes 74 to a pair of cylindrical
rods 76. The spokes 74 are connected intermediate their
ends by angle members 77 to a ?at rim 78 extending
der the influence of the springs 126, move in a counter
clockwise direction about the shaft 119, with the decrease
in diameter of the rod receiving channel 82, and the
reel 80.
The drive sprockets 103, 105 mounted on the drive
shaft 114 receive their power through a drive compris
ing sprocket 130 a?ixed on the outer end of shaft 114,
rim plate 78, together with the spokes 74 and the rods 76
endless chain 132, sprocket 134, at?xed to the shaft 119,
comprise a rod receiving channel 32 around the outer
sprocket 136 ai?xed to the shaft 119, chain 138, and
periphery of reel 80, see FIGURE 3. As shown in that 10 sprocket 140, a?ixed to a main drive shaft 142.
?gure, a plurality of turns of endless sewer rod 04 are
The main drive shaft 142 is connected at its inner end
shown as being coiled on the basket 80.
to a speed reducer 144, and the opposite end of the shaft
142 is journaled in a self-aligning pillow-block bearing
The reel 80 is provided with means for retaining the
coiled rod 84 in the channel 82 formed in the reel 80.
146 mounted on an upstanding bracket affixed to the
around the entire portion of the reel, designated general
ly by the ‘reference numeral 80. As will be obvious, the
Referring now to FIGURES 3 and 4, this means com
prises a pair of endless chains 86 and 88, which are con
15 lower rod member 44 on the frame 40.
The speed reducer 144 is connected by a shaft 148,
which passes the entire length of the reel frame 40, through
a bracket 150 having a pair of hearings, in which the shaft
cross straps 90. As best seen in FIGURES 3 and 6, the
cross ‘straps 90 are carried by a pair of angula'rly shaped
140 is journaled. A sprocket 152 is connected to the
?ngers 92, which have their vertical leg connected to 20 rearward end of the shaft 148 in the bracket 150, and the
the roller of the chains 86 and 88, between the inner
sprocket 152 is connected by a chain 154 to a sprocket
links 94 and 96 of the chain.
1'56 ?xedly connected to the outer end of the shaft 158
The horizontal leg of the member 92‘ is connected by
of hydraulic motor 160. The pump motor shaft 158
means of ‘a bolt and nut 93 to the strap 90 so that the
passes through the tubular reel shaft 48, as shown in
end faces of the strap 90 abut the outer connecting links 25 FIGURES 1 ‘and 2, to provide the drive for the main
99 of the chains 86 and 88. As will be obvious, the
drive shaft 142, as just described.
square end faces of the straps 90 abutting the outer
Referring to FIGURES 3 ‘and 5, the reel 80 is also pro
connecting links of the chains prevent the chains from
vided with a drive means. In FIGURE 3, the reel 30 is
becoming cocked, or out of step with each other.
provided with a plurality of angular support members
The chains and cross straps, referred to as the “rod re
162 having their inner leg mounted on the exterior of the
taining means,” are received in the rod channel 82 of the
spokes 74, and a cylindrical plate 164 is connected to
basket 80 to maintain the coiled rod 84 in the channel
the outer legs of the support members ‘162 by means of a
82, regardless of the number of turns of rod received in
bolt 166. The cylindrical plate 164 is provided with a
the channel 32. As best seen in FIGURES 1, 2 and 5,
plurality of angular members 168 connected to a drive
the chains 83 and 88 pass out of the channel 82 of the reel
chain 170 by the outer leg of the members 168. Each
80 at the out-feed end of the machine and are trained
member 168 is connected to the chain 170 in a manner,
over an upper idler wheel 100, and a lower idler wheel
generally similar to that shown in FIGURE 6, and the
102, and are entrained over a pair of drive sprockets 103,
inner leg of the member 168 is connected to the bolt 166.
105, one of which is shown in FIGURE 1. The idler
A drive sprocket 172 is mounted with its teeth in mesh
wheels 100 and 102 are each mounted on an arm 104, 40 with the chain 170, whereby the sprocket 172 will drive
which is pivotally mounted on a bracket 106, carried by
the chain 170‘, and in turn the reel 80. The sprocket 172
a cross piece (not shown) connected between the lower
is ?xedly mounted on the inner end of a stub shaft 174,
rods 43 and 44, and upper rods 45 and 46 of the reel frame
the outer end of which is received in a self-aligning hear
40. The arms 104 have an adjusting arm 108i pivotally
ing 176 mounted on a plate 178 carried ‘by a pair of angu
connected to the ‘arm 104 intermediate its ends, and the 45 lar structural members 130 mounted between the reel
outer end of the arms 108 are provided with a plurality
frame rods 46 and 44. A sprocket 182 is ?xedly mounted
of adjusting apertures 110 in order to permit the arms
on the shaft 174 intermediate its ends, and the sprocket
to be pinned in various positions of adjustment to the
v182 is connected by a chain 184 to a sprocket 186, which
bracket 112. As will be obvious, this mounting of the
is ?xedly mounted on the main drive shaft 142.
idler wheels 100 and 102, allows the position of the 50
Accordingly, it will be seen that driving power is im
wheels to be adjusted so as to maintain the rod retaining
parted to the reel drive sprocket 172, and the rod ten
chains 86 ‘and 88 in the reel 80 for a major portion of the
sioning means sprockets ‘104 by means of the main drive
circumference of the reel 80.
shaft 142.
The drive sprockets 103, 105 are mounted on a cross
The control system for the rodding machine includes a
shaft 114 received in bearings 116, a?ixed to the outer 55 main control unit 190, which may consist of a pair of
nected together at a plurality of spaced apart points by
ends of hell crank, or rocker ,anms 11a‘; and 120. The arms
118 and 120 are mounted intermediate their ends on a
cross shaft 121, which is received at its outer ends in a
hydraulic valves (not shown) for operating the motors
60 and 160 in both the forward and reverse direction, a
hydraulic reservoir 192, a main drive motor 194 which
pair of self-‘aligning pillow-block bearings 122 and 124,
may ‘be of the gasoline combustion type, and a pair of
see FIGURE 2. The inner ends of the arms 118 and 60 hydraulic pumps 1% and .193 which are mounted in
120 are connected by coiled tension springs 126, as best
tandem on the main shaft of the motor 194. These units
shown in FIGURE 1, to the members 66, connected be
have been represented schematically in the drawings, and
tween the rods 43 and 45, and 44 and 46. This arrange
referring to FIGURE 2 it will be seen that the motors 196
ment provides a self-adjusting tensioning means which will
and 193 are connected to the valves (not shown) in the
‘function to maintain the rod retaining chains and cross 65 main control unit 190 by the lines 200 and 201. Each of
straps 90 in tight engagement against the rod 84 coiled on
the valves in the unit 190 is connected by lines 202 and
the basket 80 regardless of the number of turns of the
203, and 204 and 205 to the opposite sides of the mo
rods 84 on the basket. That is, as the rod is being coiled
tors 60 and 160, respectively. Each of the motors 60 and
on to the reel 80, increasing the diameter of the rod
receiving channel 82, the arms 118 and 120‘ will move 70 160 is provided with drain lines 206 and 207 which are
connected to the reservoir 192. The reservoir 192 is con
slowly in a clockwise fashion, as viewed in FIGURE 1,
nected
by a main feed line 208 to the pumps 196 and 198,
thus adjusting the position of the drive sprockets 103,
and the control unit 190 is connected by a return line
105, carried on the outer ends of the arms 118, 120.
210 to the reservoir 192. The valves in the control unit
Conversely, as the rod is pulled off of the reel 80, the
arms 118 ‘and 120, and drive sprockets 103‘, 105 will, un 75 maybe provided with operating means (not shown) which
3,098,251
5
function when actuated to change the connection between
the pumps Y196 and .198 through lines 200 and 201 through
the control unit 190 from line 202 to line 203- and from
line 204 to line 205, or vice versa, as the case may be,
to reverse the drive of the motors '60 and 160, and a v5
further control valve and suitable hydraulic connections
(not shown) may be provided, together with a brake
band (not shown) entrained around the brake face '50, so
as to provide braking means \for the reel ‘frame 40. The
control system is conventional, and permits selective for 10
ward rotation of both the reel frame 40* and the reel
80 in order to feed the rod '84- forwardly and rearwardly
through the underground conduit, and to selectively im
part a rotative movement to the rod. In general, it is
desirable to impart a rotative movement to‘ the rod as it 15
is being fed forwardly through the conduit in order to
aid the for-ward feed of the rod. When the the rod is
being withdrawn from the conduit, however, it is gen
erally not necessary to impart a rotatiive movement to the
rod. Accordingly, the control system permits such selec 20
6
askew of the lengthwise axis of said trame to (facili
tate the feeding of said rod,
(e) said ‘frame being mounted on a chassis ‘for rota
tion about a longitudinal aXis of said frame substan
tially perpendicular to the axis of rotation of said
reel, whereby to impart rotation to said rod during
the ‘feeding and retraction thereof,
(f) means for retaining said coiled rod on said reel rim
including an endless belt arranged to rotate with
said reel between the side walls thereof to hold said
rod on said reel rim, said belt being in engagement
with said rod for a major portion of the circumfer
ence of said reel rim,
(g) said endless belt being provided with tensioning
means for automatically varying the tension on said
belt in response to a variation in the amount of rod
coiled on said reel rim.
2. The sewer rodding machine of claim 1 wherein said
endless belt comprises:
(a) a pair of chains entrained ‘over a pair of sprockets,
tive operation.
said chains being spaced apart a distance comple
serve to effectively maintain a coiled rod on a rod reel 35
belt.
mental to the distance between the side walls of said
As best seen in FIGURES ‘1 and 2, the rod 814- passes
rail,
out of the rod channel 82 in the reel 80, and due to the
(b) and a plurality of cross links interconnected be
angular disposition ‘of the reel 80, the rod will pass under
tween said chains.
the rod retaining chains ‘86 and 88, and cross straps 90, 25
3. The sewer rodding machine of claim 1, wherein said
and into the arcuated ‘feed-out tube 54, which rotates with
tensioning means comprises:
the reel frame ‘40 so as to guide both the “in” and “out
(a) a rocker arm assembly having its middle portion ’
feed” of the rod 84.
pivotally mounted on said frame,
It will thus be apparent that by my invention, I have
(b) a ?rst portion of said rocker arm assembly being
provided a new and improved sewer rodding machine 30
yieldably connected to said ‘frame,
which operates to feed one~piece rod either forwardly or
(0) a second portion of said rocker arm carrying a pair
rearwardly, and which will also impart a rotative move
‘of drive sprockets on the opposite side of said piv
ment to the rod, or not, as is desired. Further, the auto
=otally mounted middle portion to drive said endless
matic tensioning means provided in my invention will
regardless of the number of turns of the rod on the
reel.
What I claim is:
1. A sewer rodding machine comprising:
40
(a) a reel having a rim and a pair of side walls,
=(b) a rod coiled on said rim,
(c) means ‘for rotating said reel forwardly and rear
wardly in the direction of 'feed of said rod,
(d) said reel being mounted on a :frame elongated in
the direction of feed of the rod and in a position
References Cited in the ?le of this patent
UNITED STATES PATENTS
‘639,409
1,761,592
1,942,890
2,167,087
2,191,393
2,499,287
Lamb _______________ __ Dec. 19, 1899
Seidel ________________ __ June 3, 1930
Wittel ________________ __ Jan. 9, 1934
Quick _______________ __ July 25, 1939
Humphreys __________ __ Feb. 20, 1940
Wilson ______________ __ Feb. 28, 1950
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