Патент USA US2135103код для вставки
Nov. 1, 1938. v ` D. B. DlMlcK 2,135,103 LOCK JOINT SUBDRAINAGE PIPE Filed Jan. 4, 1938 2 Sheets-Sheet l Nov. 1, 1938. D. B. DlMlcK LOCK JOI`NT SUBDRAINAGE PIPE Filed~ Jan. 4, 1938 2 Sheets-Sheet 2 l Patented Nov. 1, 1938 UNI'TEDsTATEsY PATENT oFFIcE ï . _ `¿ g,‘1s5,1o‘3”'7 dl. _ __ V'Look-,Jouv'll SUBDRAINAGE PIPE Danielj ïß.' Dîniick, Newton. Masts. " ' Ápplicatión ¿January .4, 193s, serai No.71s35353 . _ _ _ A . sonnes." The present invention relates'toirnprover?ents in lock-joint subdrainage pipe‘andëhasifor ' an Job; ject to provide an improvedconnection or »joint between sections of subdrainage pipe that will 5.; act to hold the sections of pipe together against any likelihood of separation, while at the same Atime allowing of a certain flexibility between the pipe sections incident tothe uneven settlingl of the ground, abnormal' localized superimposed 10I Weights and other causes. f ` - The invention also contemplates the provisionY (C1. «s1-_11) _ ' ¿Figure 9 is a sinmar‘view from thefs'pigot end. -FigurelO is a vertical section, taken onan en larged scale, on the line III-IU 'in` FigureA 7'; and _ _ `~ _ Y y. , Figurevll is an" enlarged verticalsection 0i the joint shown vin Figure _7 and illustrating the ra dius of curvatureand radius of'irelative movement' Í ofthe ñexible connectedïfsections. " Referringfmoreparticularly to Figures '1 ’to '5, ` A and B represent twoïadjoining sections ofA sub drainage pipe _constructed ¿in ï accordancel with of an improved joint in Which-the items offsim the present',~ invention inmetal,` clay or `other ap plicity and economy in manufacture are taken. propriate'material. These sections may beV each largely into account,y togetheíjwithïthe further cin'nposedl cfa semi-circular `.or rother form-of feature that the pipe _sections may be assembled _wall I'2v`between the upper portions ‘of which is and locked together easilyand quick‘lyïin _trenches supported a- cradle -orr top »wall I3. " The Vcradle orY other places where clearancefandj operating ' preferably slopes frontend to end of "its pipe secf room are limited. ' I l" f A further object of the'invention is to provide 20 both internal and 'external` locking devices for the pipe sections, neitherf-'o'f which interfere with one another in the adjustment of ïeach'pipe sec tion due to locking conditions, and both‘ of which contribute jointly to the single purposeof secur-" 25 ing the pipe sections together. againstv separation tion whereby the vlower end of one cradle "will extend vertically beneath the adjacentV higher end of the i cradlegof; the> adjacent section, y thus“ pr'o-` ducing lan elongated slot or gap I4 leading'from> the upper-surface vof the cradle ISof a higher'pipeA sectiofn‘rB throl'igh` the slot intotheinterior of the next lower forîcarry-oi’fïsection` A. ' _ ` As shown in-'Fig'ure 3, the water which `settles upon the cradle I3 of section-B descends through ` in such a snugly set-up relation as to avoid- leak-l age at the points. «gap or slot I4 in a cascade eiïect downwardly into - » , With the 'foregoing and other objects in view,` the interior fof 'the Apipe section A. thus‘stirring the invention will be more fully described herein i up"the fluid material in the subdrainagepípe and after, and will be more partîcularlypointe'dfout in having.»ajself-clearingaction so as to vavoid the' 301A the claims appended hereto.v ' . .» ' stoppingï-up of the ¿slot I4. ' In the drawingsywherein Vlike symbols refer to »like or corresponding parts throughout thesev eral 35 views. ' " _ . . ` > Figure 1 is a fragmentary .perspective View I A V‘The'bell end of "the pipe'A is'indicated atV I5, while at' I6 is shown’fthe‘spigotend of the pipev section B. Í‘Pads-Il andïI'81 are cast or otherwise ’ produced uponthe bell and spigot, VThese pads showing an improved lock-joint subdrainage pipe ‘ will extend preferably in> a circumferential direc constructed according‘to the present invention. tion _about one-third the normal diameter of the -Figure 2 is a side View, withparts broken away pipe,y although this is‘not essential. ¿The pad Ilv and parts shown in‘sectionfwith thepipe sec Y ‘ »_ 40 ltions disassembled. Figure 3 is a longitudinal vertical sectional View taken on the line 3-3 in Figure 1 and with Inside the pad is formed thereby a depression i9 into which ther complementalfpad I8 of the bell I6 ñts as'indi'catedin Figure 3. In separated po the parts assembled. _ n ~ » sition the parts are shown in Figure 2. The pads Figure 4is a side view, with parts broken Vaway ’ I‘I.1and 'I8 ‘constitute the internal flocking device. ` 45 _ and parts shown in section of Atwo sections of pipe VThe external'locking device is composed of ears joined together by the improved joint and indi-` and clips which cooperate vto hold the spigot I6 .n _down in the bell I5, and prevent the pad» I8 fromV Figureä is a vertical transverse'section taken lifting and»> clearing vover the pad I'I, ‘such -asY on the line 5-5 in Figure 3.> , ` ‘ would benecessary'toîseparate the ends of the cating the flexible character thereof.` ' 50 _ > Figure 6 is a top plan View of- aslightly modi ified form of the invention- Figure '7 is a longitudinal vertical section taken on the line 'I-'I in Figure 6.: Figure 8 is an end ViewV as seen ¿l end of one .of thepipe sections. Y; i Vfrom Ithe bell l' pipe sections. ï The ears are indicated at I 9V' and >they taper from one end tothe other. " These ears are -upon the outside upper portions ofy the ' bell-I5, being »two in number and located at sub-5A stantially». diametrically opposite »points near: the _' upper partof the pipe. As best shown in'y Figure 51,', 2 2,135,103 the ears I9 have lower incurved surfaces 20 to be able to move together on the line of curvature iform sliding interlocking connection with the between the parts I9a and |91’. This might be lower jaws 2| of the malleable clips 22. The ears I9' or the incurved lower surfacesv 20 thereof, are tapering from end to end. That is the ears pro gress in thickness from one end to the other. styled the` lobe curve, the center of which is at C . 'I'his condition is shown in Figure 2 in which the smaller dimension of the’ears is shown to the right and the larger dimension at the inner end 10 of the bell I5. Thus when the malleable clips v22 are driven onto the ears, a binding effect is cre ' ated due to the wedge action produced by the ears and the clips. This wedge action causes the other jaws 23 of the clips 22 to press down upon the 15 upper edges or curbings 24 of the spigot I6 thus holding the pad I8 down in the socket or depres sion I9 and behind the companion pad I1. In other words, the inner surface 20 is higher at one end than it is at the other. The highery end is 20 at the free end of the bell I5. The same result could be produced of course if thetaper was upon the claw or jaw 2l of the clip 2,2. The _upper claw or jawV 23 rides within an opstanding rib 25 on the bell. This rib 25 guides the clip and in conjunc 25 tion with the ear I9', which from Figure 5»wi1l and the radius line being indicated at R. This radius R should be constant throughout the curved surfaces at I9EL and IBb. In other words, the curvature between the meeting surfaces of parts I9ß and I9b should be struck from the com mon center C. Thus the pipe sections can shift withrespect to one anotherV inthemanner indi 10 Icated in Figure4. In 'other words, the pipe sec tions are in this sense said to be flexible 'at the joint. Now it will be noted from Figure 10 that the 'concave and convex parts |98L and I!)b extend up 15 and around from the bottom of the pipe only about half way. In other words, these interñtting parts Ißeand I9b do not go all the way up on bothsides of the pipe section. 'I‘he center C ' at the spigot end acts as a fulcrum and the pipe 20 tends to sag downward, creating a sliding move Vment at the arrow point, preventing a swivel effect without breaking loose at theY joint. In the form shown in'Figure 6, the taper 2l)a is shown upon the outside lateral or horizontal "-‘be shown to extend outwardly'andl downwardly surface of the ear I9'. This will have a tendency from the Vside of the bell, coacts to bind lthe jaws of the clip 22 in place lupon the joint. The »clip 22 may be slid horizontally from lthe higher or narrower end_of the ear I9fand driven by ham to wedge and lockthe clip inplace but it will not have the'effect to force vertically downward the ,jaw` 23 upon the spigot. The preferred con struction- is shown in Figures l to 5 in which this vertically downward movement is the result of the wedge action. LThe vertically downward Vmovement binds the pad I8 of the spigot into the recess I9 and back- of the bell pad I1. In' Figures; 6 -to 11,1 it’ is assumed that a proper . 30, " mer blows ’towardsV thel other thicker orlower end. In other words the -hammenblows will act to wedge the clip 22 upon the ear I9’ and upon the rib 25 and the curbing 24 of-,ther spigotv I6. 35 The same result could be` securedL by having the inclination or wedge formationon clip122. The malleability of the clip 22 enables the same to be forced onto the cast iron pipe joint without likeli hood of danger of breakage to either-3»` _Moreover, 40.' such a clip will possess a certain amountlof elas;k ticity which will enable the partsëtoA-be. put under» interñtting relation already obtains between parts lee andalßl? beforeputting the clips in place.` 45 tion with respect to another which is owing tothe struction and design rof the' above specifically described embodiment 'of this invention without Therefore, anybinding action ofthe clips, even an outward horizon’tali'binding action, will suffice as the clips will athenholdfthe spigot-_end'fromv 40 lifting out ofthe previously Aengaged-position ' great pressure _and tension. fI‘herebyapositive of the interñtting ,parts ,|85A and AI9b . ` ~It is obvious that various changes and modi lock is produced for- the joint Without,- however, interfering with `the. deflection `of¿_-_one pipe‘sec-_ ñcations may be made in the details -of con >use of the malleable iron clips.l At the same time the joint> possesses arcertain rigidity that will prevent thecasual» or> accidental separation vof the pipe sectionsand çwill avoid. departing from the spirit thereof, such changesv and modifications ‘being restricted only byv the scope of Vthe following claims: leakage. » The malleable iron clip may be put in What-»iis claimed is: 5ct 1. A'subdrainage half-round pipe comprising a vise and adjusted as by opening or closing the jaws 2| and 23 thereof to greater or> lesser extent, adjoining pipe sections with.V interñtting half whereby the clips are madeto _conform to. the bell-and spigot, ksaid pipe sectionshaving- sub deflection in the vpipe sections Awhichuthey act to stantially semi-circular bottom walls 'and hat top f cradles, interñttingä parts >on `>the Voverlapping couple together. , -) l 55. The requirement of> such ¿a lockïjoint feature half bell and-spigot, -ears lon the outside of the: is due to the fact that in railroadworkbefore half bell, ribs upstanding from said half bell, and the construction has consolidated theremay be al malleable clips slidably‘ engaged upon said ears movement of the materialwhich` causes -„:aïcon-_- and over said ribs and having claws, one claw centrated load on the pipe tending 'tocauselitztoi engaging beneath the ear, the other claw engag 60 separate. The lock-joint will_hold thesections ing uponthe upper side .of the semiecircular wall together. At the same time it isrvery desirable to and within said rib, said clip and earhaving have a lock-joint which will yield «rather than one which is wholly rigid. The valueof the construc wedge surfaces therebetween.4 ` ‘ 2. In alsubdrainag'e :pipe composed. .of a plu rality of. pipe sections, each section being _com et? tion consists in the fact ,that itfis ¿positivi-:fin lock ing the pipe together butpconstructedso that the~ posed of a substantially semi-cylindrical bottom? joint will yield ordeflectjunder pressure, ,1 The; wall and a substantially flatV top wall sloping arrangement of theinternal and external locking ' from end to end of the pipe section, said pipe sections having upstanding curbings at `the lower ends of ¿said topwalls, said‘pipe sections having the same construction isillustratedwith‘the ex-` half bell portions projecting from the higher ends ception that the pads- I'I and _I8 are replacedpby a'> of the top walls for enveloping the deep curbings devices gives a remarkablyyfleiçiblgeJoint.. j 1_’ . Referring more particularly tQ-'Fígul‘esî‘fì to sunken ordepressed area ISeofztheibelI and a of the half spigot ends of thezadjacent pipe sec convex for 4raised portion ISP .on .tl'1e;`s`pigot„> .'.In‘ tions, said half. bellslhaving’ribs projecting up-V 75 order to' obtain ñexibilítmthe. twoisectionsshouldf Vwardly therefrom outwardly ’ofthe deep curbings` 3 2,135,103 of the half spigot ends, projections on the outer parts of 'the half bell ends, and slidable means cooperating with said projections and having wedge surfaces therebetween, said means having section by movement of the pipe sections at right angles to one another, said half bell and spigot jaws guided by said ribs and slidably engaging and withdrawn in the same manner, ribs on the upon the upper surfaces of said deep curbings. 3. In a subdrainage pipe composed of a number of similar pipe sections, each said section com posed generally of a substantially semi-cylindri 10 cal bottom wall and a fiat top wall sloping from end to end of the section, each section having a half spigot end and a half bell end for receiving the half spigot end of an adjacent pipe section, said pipe sections having curbings extending above 15 the ñat top wall, said flat top walls forming gaps therebetween at the assembled half bell and spigot ends of two adjacent pipe sections, ribs upstanding from the half bell ends outwardly of said curbings and upwardly above the curb 20 ings, projections on the outer substantially di ametrically opposite portions of the half bell ends, and malleable means slidably mounted with re spect to said projections, said projections and malleable means having wedge surfaces there 25 between, said malleable means having jaws ex tending within and guided by said ribs and slid able directly in contact with said curbings.l 4. In a subdrainage pipe composed of a plu rality of pipe sections, each such pipe section 30 including a substantially semi-circular bottom wall and a sloping top wall with curbings up standing above said top wall, said pipe sections having half spigot and half bell> ends for fitting together to join two adjacent pipe sections to ends having internal Iinterlocking parts inter ?ltted by said right angular rectilinear movement curbings. .Y - 5. In a subdrainage pipe composed of pipe sec tions of substantially semi-cylindrical form hav 15 ing cradle top walls for collecting drainage water, said top Walls having gaps therebetween at the meeting portions of said pipe sections to permit the infiltration of the _drainage water into the 20 interior of the pipe, said pipe sections having interlocking portions at the meeting parts of the pipe sections, said interlocking portions having a limited relative movement in a direction axially of the pipe sections for permitting of the angular adjusting tilting movement of one pipe section with respect to another, and means for detach ably binding said interlocking portions in the interlocking relation, said means being in sub~ stantial alignment with said interlocking por 30 tions in a direction transversely'of the pipe whereby said means will not interfere with the rocking or tilting movement of one pipe section with reference to another. 35 gether, the half spigot end of one pipe section ñtting into the half bell end of an adjacent pipe 5 free ends of the half bell portions extending Vupwardly beyond said curbings, projections on the half bell portions just below said ribs, and malleable clips slidably and interlockably en gaged with said projections, said projections and 10 clips having wedge surfaces therebetween, said clips also having jaws riding within and guided by said ribs and slidable in contact with said DANIEL B. DIMICK.