US2192086A - Pipe sewer rod - Google Patents

Description

. Feb. 27, 1940. A. P. KJERULFF PIPE SEWER ROD Filed Feb 19, 1936 "9. /Eliii? l B m J cleanly and with less trouble.

Patented Feb. 27, 1 Q Q PATENT OFFICE i This invention relates to. improvements in pipe 1 and sewer rods, especially on. the pipe and sewer rod disclosed in Patent 1,858,509 015 May 17, .1932, to Anton P, Kjerulfi, ..and its'obj'ects are. as

followsz I I First, to. provide a cleaning device which will .adaptitself to variations in" the pipemore. easily than. other cleaning devices of a similarnatur, particularly in. more easily turning bends, and

I contacting thewall's of the pipe more-closely so that obstructions arealoosened and removed more Second, toincludein the flexible'rodmember a; stiff pilot spring which; serves to lead the cute ter'member around'bends, said pilot spring also carrying a coupling member to. which aconvene Third, to. makethe cutter member in a tapered blade formation,,the-tubular end; pieces, or sleeves to which the ends/of thebla'de'sare secured being providedwith prongs forcatching; roots'and other; obstructions; ,.Fqurth, tov provide thecleaning device with short bufier springs to cushion theshocks in the operationof the cutter member. I Inthe'drawing: y Figurelis a side elevation:oftheimproved pipe andsewer rod. I i

Figure 2. is a longitudinalsection taken on-the line',2-2 of Fig.1. I I Figure '3 is a long udinal section taken onv the line, 3 3. of Fig. 1. I

-, Figureiis a cross section section taken on the line 4-4 v of Fig. 1.,

a modified conat- 4. (Fig.2) to a sleeve. or casting 5,. which is recessed at 6 to contain the end 3.

A. threaded nipple 8 made integral with the casting 5,v (Fig. 2.) is screwed. into. one end of] the pilot 2; the convolutionsof thev latter providing complementary threads; After the two partsare screwed'together they are permanently secured as, by welds 9. Thejcastingiis thus. rigidly held in. place. intermediately oi the rod. l and pilot 2) serve to permanently Figure 5: is a detailed cross "section taken on.

2 of the flexible rodinember, servingas connecting means for the rod and pilot.

II cutter member Ht is ."slid'ably mounted on the rod member. It is composed of a plurality of blades ,l I which are attached at their ends to tubular end piecesor sleeves l2, l3. constituting two. spaced bearing points for said member, in

such a manner that the cutter member is generally elongated and has atapered blade. formation. Each. blade is. of a. helical shape,v making one complete turn around the. flexible rod member, be-

ginning. at the sleeve 12 and ending. at the sleeve I13; orvilce versa. The opposite edges of each the. remote spring blade ends andarourid the sleeves l2, l3, whence they extend in opposite d1:-

rections, and have loose contact with the -rod I and pilot 2. .The sleeves l2; l3 are'also loose'on the rod-; member; Those parts of the springs i5,

16- that are wrapped around the spring blade endsaid securing said. ends, but welds H (Fig.

other of thesleeves i2, 13- as the implement is wielded in the pipe. These sleeves, further; are

used to enable. the operator to pull cut roots and other obstructions out, and forthis purpose they have pointsior prongs l8, la The pilot 2' is capableof use as a mount for a conventional sewer rod head I 9 shown in broken lines. in Fig. 3.

connect the parts. men.-

I blade, i]. are sharpened. as at. M (Fig. 5.). so. as to more effectively cut throughv pipe (not shown).v

A' coupling member 20 has a'threadeclv nipple 25 I (Fig. 3) that is screwed into the convolutions of the pilot spring 2. The connection is made per manent. by welds 22. The coupling member 29 has holes 23 through which the securing, bolts 2d are passed, the latter also. passingthroughthe sleeve end 25 of the head. l9.

Figure 6 illustrates a modification which is almost identical with Fig. 1. The cutter member Hlehas sharpenedblades I i as before, the opposite ends of these being secured to pronged sleeves. [2 [3. which are loosely and slidabl'y type shown in Fig. 2; it isnow made in the form I of a sleeve which is slid upon the rod member to the desired position and secured there by a set screw 21. The casting 5 may be positioned wherever desired along the flexible rod member, and the cutter member it will be positioned accordingly, the casting being centered with respect to the cutter member just as in Fig. 1.

Fig. 7 illustrates a further modification which chiefiy'concerns the connecting means between the sewer rod 28 and spring pilot 29. The latter is to be considered substantially the same as the pilot 2 in Fig. 1, and now both ends are made alike. There will be a coupling member like 20 on the right end (not shown) of the spring29,

and at the left end it has a similar element 30.

ber (as in Fig. 1), and to the better make engagement with the sleeves I2, l3 whenfunctioning as an abutment.

The operation is as follows:

The cleaning device, whether of the formin Figs. 1, 6 or 7, is projected into the pipe to be cleaned, whereupon the rod l is pushed or pulled with a hammer or battering ram action when the obstruction is reached. The abutment means which the castings 5, 5 or the center piece 32 afiord will engage or be gripped by one or the other of the sleeves, and in doing so will tend to elongate the blades of the cutter member, reducing the diameter of the cutter member so that it can be worked into and through the 'obstruce tion. In this respect emphasis is laid on the special shape of the cutter blades. As shown in the drawing and as previously stated, eachblade} makes one complete turn from end to: end.

When rounding a curve, for instance in an elbow, the inside blade will be compressed and elongated, thereby tilting the sleeves l-Z, I3 to which the blade ends are attached and thus setting said sleeves to conform to the curve.

The frictional contact of the cutter member Ill, Ill either with the walls of the pipe or-with the encountered obstruction will cause the cutter member to turn automatically by virtue of its tapered and helical formation thereby cutting into the obstruction. After the obstructions have been loosened the prongs I8, 18* will catch them and enable the operator to pull them out of the pipe. The flexible pilot 2 (Fig. 1) feels out the obstruction and guides the cutter member into the working position. Special emphasis is laid on the automatic screw action of the cutter member which is obtained by the sharp angle of the blades. However, there are times when the cut-v ter member i0 can be held fixed upon the rod member I, 2, and this function is achievedby pulling or pushing'hard enough upon the tool at the operators en-d. At such a time the socket (Fig. 2 which the flaring prongs I8 (or IB forms, cups the abutmentmember 5 or the equivalents, and exercises a grip thereupon as ex-E plained'. The bufier springs l5, l6 both cushion the shocks when working the cutter member it! back and forth, and also prevent t'he tube from hanging up in the sewer, said buffer springs slip ping off of any sharp edges that might be struck in going around bends in the pipe, or at a place I where a small pipe enters alarger one. In the last instance there is bound to be a large obstruction which, virtually, is a solid Wall against which a tool, made otherwise than herein shown,

can easily be locked. But by having the bufier,

springs l5, 16 in advance of the sleeves l2, l3

the free end of one or theother of these springs will strike the foregoing obstructions, the convolutions nearestto 'saidpbstruction bending and tilting 'until the entire pring slipsbfi.

I claim: 1

1. A pipe cleaning device comprising a sewer rod, a stifi coil spring pilot, a cutter commonly and slidably mounted on the sewer rod and coil sprin .,,pilot,- and means joining said. rod and pilot within the confinesof the cutter to limit. I

pilot. I I

2. A pipe celaningdevice comprising a flexible yrod member, .a cutter member loosely carried v thereon, said cutter member consisting,-jo'fz a plurality of helical blades ar'ound'the r'od'member and sleeves 'rotatably andslidably. mounted on the rod member to which the ends of .the

blades'are secured, single abutment means car-.

ried by the; rod member medially of saidsleeves sudden thrust in either direction of the'rod member to hold the cutter member stationary on'the points, a rod member on which the cutter member is slidably mounted, means on the rod mm- "the sliding motion-of said cutter on the rod and 1 J .totransmitmotion from the ;rod.member'to the i cutter member, and means on the sleeves to-grip the abutment means upon the applicationofatil ber situated'medially" of said hearing pointsby which to abut and transmitmotionto the" cutter member; and a-bufier "spring secured to ea'chend of the cutter memberand surrounding the rod member, the remote convolutions "of's'aid: springs being exposed to pipe obstruction to 'absorb shocks in operating the cleaning devicei f 4. A pipe cleaning devicecomprisingjacutte member, a rod member on which the cutter mem ber is slidably mounted,'said rod member includ-] ing a sprin pilot and a flexible rod,'jabutni entmeans mounted on the rod member, and sleeves forming parts of said cutter member, said sleeves constituting spaced bearing points for the cutter member on said rod member,-the abutment means being situated mediallyof said points,

with one of which sleeves the abutment-means is engageable't'o hold the cutter member-in 'sta tionary relationship to the rod-member. 5. A pipe cleaning device comprising afiexible rod member, a sleeve on the rod memberwith; meansfto fixthe sleeve in position. on said rod member} a cutter member which has a plurality of blades each being 'helicallydisposed around the rod member and including pron'ged sleeves I to whichjthe ends of the blades are attached sa'id 1 pronged sleeves being slidable onthe rod member and engageable e first sleeve, and buifr meansoarried by the pron'g sleevelswalisofyserv; to secure th which the cutter member is commonly and slidably mounted and having ends meetin'g within the confinesof said. cutter member,said spring pilot carrying an elementiwhich overlaps j the end of the sewer rod, a centerpiece of relatively means to fix the sleeve in position on said rod member, a cutter member-which has aplurality of cutting elements each helically disposed around the rod member and including pronged sleeves to which the ends of the cutting elements are attached, said pronged sleeves being slidable on the rod member and engageable by the first 5 sleeve, and bufler means carried by the pronged sleeves.

ANTON P. KJERULFF.

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