Патент USA US2115266код для вставки
April 26, 1938. E. M. JOHNSON 2,1 15,266 CONDUIT CLEANING TOOL Filed May 3, 1937-‘ J2 a V , " ’ INVENTGR. Emery 0447077775011 %% . 2,115,266 Patented Apr. 26, 1938 UNITED" STATES PATENT OFFICE ' ‘ Y j I 2,115,266 : ' " ’ g ‘ ~ 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. ' , 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 L 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. , 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: 55 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 7 ' ‘ ‘ 15' 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: ‘ 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 V 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 "