Патент USA US2409866код для вставки
Patenteå Óct. 22, 1946 1409,88; UNITED STATES PATENT OFFICE 2,409,8.65_v PIPE JOINING DEVIQE Howard W. J ewell, Los Angeles, Calif, Appnç?uqn November 80, 1948, serial No. 512,332 ' 1 6 Claimsë (Cl. 285¬113) 2 , This invention pertains to improvements in methods and devices for` joining- Sections of pipe. The invention is particularly directed to a de vice for Centering adjacent sections of pipe and holding the same in position While such pipe sec tions are permanently joined together. Gener at the same time Seal the joint; 'such metallicA forms are often removed after the cement has set so as to permit re-use of' the forms on other joints.V ` This invention is directed to a device which facilitates the laying and centering'of adjacent ally stated the device comprises a hollow sleeve having oppositely tapering end sections from a pipe Sections and assures proper 'spacinglbetween the Virtually abutting ends of adjacent pipe sec mid zone of greatest perimeter such sleeve be tions, The device itself is preferably made of a ing of a composition adapted to lose strength and 10 'weakly coherent composition adapted to disinte be removed by liquids passingV through the pipe grate under the action of liquids so that a smooth internal bore is presented without any lips or in which the sleeve is installed. ` Pipe lines or conduits for various purposes other obstructions to the liquids which needs pass such as, for example, sewer lines, low pressure through the pipe line or conduit. ` water lines, etc., are often made of ceramic pipe. 15 An object of the present invention therefor is In actual practice it i's' extremely dif?cult to make to disclose and provide improved methods and ceramic pipe such as burned- lclay or vitri?ed means for facilitating the< laying of pipe lines. clay composition pipe of uniform internal or ex Another object of the invention is to disclose ' ternal diameter. Variations in composition of and provide means for facilitating the proper the clay, the moisture content, and temperature 20 placement of pipe Sections in axial alignrnent. and time of burning influences the size of the A further object of the invention is to disclose ?nished- burned- pipe and as a result clay pipe and provide _a device for centering adjacent sec varies appreciably in diameter. A 4 inch pipe, tions of pipe and for temporarily holding the for example, may depart from this dimension some in position which such pipe Sections are plusor` minus 1/8 inch. Problems are encountered -N CA J'oíned together. therefor in laying pipe lines made of ceramic Further 'objects of the invention as well as the pipe Sections in that water tight joints are diiii-` various uses to which the device may be put will cult to make between adjacent pipe sections be become apparent to those skilled in the art from cause of the variations in the diameter of the the following detailed- description of certain eX abutting pipe Sections. › 30 emplaryforms in which the invention is embod-` Moreover it is desired that the pipe Sections ied. order to facilitate understanding, refer be in axial alignment so as to present a smooth ences will be had to the appended drawing in internal surface or face to the passage of fluid therethrough. Bell and spigot pipe has been Figure 1 is an axial section through the end largely displaced in recent years by plain-end f portion ofa pipe provided with one of the devices which: pipe since Stronger joints may be obtained by the 4 ` i of the present invention said device being partly use of suitable Ceramic collars enclosing the broken away.` abutting plain end pipe. Since most of these pipe lines are laid upon uneven ground some , ` Figure 2` ` is an end shown in Figure 17. ` ` elevation of the device means must be provided for holding the abut 40 Figure 3 is a sideelevation of a pipe joint made ting end's of adjacent pipe Sections in alignment by the use of the device thejoint itself employing while a joint is formed around such abutting a collar. ends. These joints may be made by the use of any suitable cement. In some instances hy draulic cement compositions are simply plastered around the joint; in other instances, due to the character of the _liquids which are to be passed through the pipe, 'sulphur-silica cements are em , ' Figura 4 is an'aaial section taken through a 45 modified- form of centering and holding device.›` The device i-l'lustrated` inrl?igures 1, 2 and 3 comprises _a hoilow sleeve ID having the bore IO' and OPpoŸsitely` tapering end portio s from a mid zone of greatest periméter. ` ' i ployed in asimilar manner. In other instances It will be noted that the ,outer surface I'l _of Ceramic collars or ?ttings are slipped around the 50 the Sleeve tapers downwardly towards the end abutting ends of the pipe and suitable cements are then poured into the form made by the col lar. In some instance? metallic,_segmental forms are placed around a joint and ?lled with cement and outwardly toward? a miri-section which is provided` with an outwardly extending circum ferential-head |21. The head 12 constitutes aystop which is positioned between the opposit'ely taper to bond the adjacent pipe sections together and a ingend portions i _I` and `_lit flfhe stop means may 4 either consist of a circumferential bead |2 or sleeve Ill, a, collar or outer' sleeve IG' provided a plurality of circumferentially arranged, spaced outwardly extending ?anges, beads or lugs. The oppositely tapering outer surface portions with a pour hole |1 is moved over the joint and a suitable cement or sealing compound is poured into the anmi'lar space between the outer sleeve not be more than twice its outer diameter. The sleeve described hereinabove is preferably _ the adjacent pipe Sections, thereby completely sealing the joint. 'Sleeves of the Character shown ll and [3 may be provided with tapers on the C1 lt and the outer surface of the pipe through the pour hole ll so as to ?ll such annular space as order of 5° although tapers of from 2° to 10° may well as the space between the a'butting ends of be employed. The total length of the sleeve need made of a loosely or weakly coherent composition 10 in my prior Patent No; 2313,074' may be em ployed. It will be noted that the device of the capable of disintegrating under the action of present invention prevents the cement or sealing liquids which will later iiow through the pipe compound from leaking into the pipe through line. The sleeve may be made of a composition ~ openings or spaces between the end surfaces of including water-reactive or water-soluble con the adjacent pipe Sections. ' stituents. The composition employed should give Various changes may be made in the contour, the sleeve sumcient mechanical strength to with- . shape'land in the proportions of the sleeves. The stand handling and to permit the ends of the sleeve to be driven into the ends of pipe Sections; ' For example, as shown Figure 1 the sleeve Ill has been inserted into the end portion of the pipe 20 Ill so that the end I? of the pipe abuts the stop means E2. The pipe |4 may be a ceramic or oppositely tapering outer surfaces Il and 13 of the sleeves may be provided with dimples, beads or longitudinal extending beads, these various beads or dimples being capable of assisting in the.¿ centering operation but by reason of 'theøfriable or disruptive nature of the composition such _. clay pipe of an uncertain or'varying internal beads are easily abraded or broken olf in the: diameter. The outer'tapering surface 13 facili tates the insertion of the sleeve into the end of 25 event the internal diameter of the pipe is smaller' than normal. ' ‹ ~ the pipe. The weakly coherent nature of the Figure 4 illustrates a modi?cation in whic-hthe-Š sleeve permits the sleevev to be driven into the sleeve is provided with outwardly and oplpgisitely` . end of the pipe M, the material of the sleeve 'being tapering outer surfaces 2| and 23 anda stop j either a'braded, partly crushed or deformed or compressed somewhat in the event the pipe lß 30 means 22. The end portions of the sleeve may be, is below standard size. The adjacent section o-f provided with a plurality of ports or apertures li; ¿ pipe will then be lslipped upon the tapering sur face ll until the end of such section abuts the and |9. Moreover the sleeve may be provided` with a transverse partition 24; such partition stop means l2. The sleeve IO will then hold these 4 imparts some added strength to the sleeve and Å two abutting pipe Sections in alignment with 35 thereby obviates breakage during handling, in- g' sertion into the pipe end, etc. e , ~ their ends suitably spaced lby the stop means |2. After a pipe line has been laid by the use of the `It may be noted that the stop means IZ should devices shown in Figure 4 a volume of water may not cover the end |5 of the pipe M but simply act as a means for suitably spacing the ends of 40 be forced through the pipe line and it rWill' be' found that the various partitio'ns 24 will readily 5 the abutting pipe sections so as to permit some break thereby facilitating the destruction and re-V cement to enter between the adjacent ends of the pipe sections during the cementing or joining moval of the entire sleeve. The bursting of the . partitions ordinarily causes the entire sleeve to operation. ' A great variety of compositions may be em crack thus expediting'the rapidV removal o_f the ployed for the centering and holding sleeves. 45 entire sleeve by the water passing through the Papier-maché has been used successfully. The pipe line. sleeves may be molded from gypsum or composi Various changes, modi?cations and adaptas tions of the method and deviceshere and above e made of unburned clay compositions such as, for O described will readily occur to'those skilled in example, compositions containing clay and ?bre 5 this art. It is to be understood thatalthough a > tions containing gypsum. The sleeves lc may be or elay, gypsum and a water-soluble v''binder. Water-soluble binders may include salt, sugar or particular form of joint has been illustratedüin Figure 3, the invention is not limited vthereto. As v' previously stated, it is not necessary to employ i molasses, naphthalene, alum and other relatively inexpensive water-soluble substances 'capable of 5 the outer sleeve |6 shown in Figure 3 since other exerting a bonding. effect when dry and of losing 5 ways of 'cementing or sealing the'joints may be _ such bonding effect in the presence of liquids. Clay moistened with a brine solution may be used in molding the sleeves. Various gums capable of swelling in the presence of moisture so as to dis rupt the sleeve may also be employed. All of these compositions should be capable of exhibit ingsuf?cient strength, in the dry state so as to permit the sleeve to be handled in the manner used. All changes and modi?cations coming within 1 the scope of the appended` claims are embraced i thereby; ' Iclaimr: 1. Apipe joint comprising `: two ›` plain end pipe. described hereinabove, butto dissolve, disinte Sections of substantially uniform insideßdiam .eter in axial alignment, a hollow sleeve compriSg-y;l grate or disrupt in the presence of liquids so that after the pipe line has been installed these vari ous devices will be washed away and not inter liquid having a beaded and thickened midëpor tion with said bead extending partway- betweenV mg a material rapidly disintegrable by. action offI fere or offer resistance to the passage of liquid andseparating the ends of thepipes'endsphjthe through completed pipe line. After the end portions of adjacent pipe sec sleeve tapered inwardly from the bead tofa :'posi- v_ tion spaced from the inside wall vof the pipe and tions are held in position by the sleeve a suitable adapted to entrap liquid between the sleeve and cement is appliedto the external surface of the pipe in the region of the joint so as to seal and pipe wall to promotev distintegration of the sleeve, '‹ and a layer of sealing cement 'surroundingŠ the , ends of the pipe 'adjacent the joint and eXtend-,? w cement such joint. In Figure 3 the two pipe sec tions M and M' are shown being held by the 75 in'g between the abutted ends of the pipe to a 5 6 position initially in contact with the bead on the sleeve. 2. A pipe joint comprising two plain end pipe Sections of substantially uniform inside diameter in axial alignment in making a joint t-herebe tween, said device comprising a hollow sleeve composed of a material rapidly disintegrable by the action of liquid, said device having a thickened mid portion provided with an out in axial alignment; a hollow sleeve composed of papier-mâché disintegrable by action of liquid and having a beaded and thickened mid portion wardly extending head, said head being adapted to extend between abutting ends of pipe sections With the bead extending part Way between and in alignment, the ends of the sleeve tapering in separating the end of the pipes; the ends on the wardly from the bead to positions spaced from sleeve tapering inwardly from the bead to a posi lU the inner walls of pipe into which said sleeve tion spaced from the inside wall of the pipe and ends may extend to permit liquid to enter be adapted to entrap liquid between the sleeve and tween the sieeve ends and pipe wall and promote pipe wall to promote distintegration of the sleeve; disintegration of the sleeve after it is installed. and a layer of sealing cement surrounding the 5. A device of the Character stated in claim 4 ends of the pipe adjacent the joint and extending 15 Wherein the hollow sleeve is composed of papier between the abutted ends of the pipe to a position mâché. initially in contact with the bead on the sleeve. 6. A device of the character stated in claim 4 3. A pipe joint of the character stated in claim wherein the hollow sleeve is composed of an un burned clay-containing composition. 1 wherein the hollow sleeve is composed of an un burned clay-containing composition. 4. A device for placing plain end pipe. Sections 20 HOWARD W. JEWELL.