US2046182A - Expansion joint and filler bridge - Google Patents

Description

June E@ M36- R. R. ROBERTSON EXPANSION JOINT AND FILLER BRIDGE Filed July '7, 1934 2 Sheets-Sheet l ihm@ 3@ i193@ E. RQBEPHSQN EXPANSION JOINT AND FILLER BRIDGE Filed July7, 1954 2 Sheets-Sheet 2 Patented June 30, 1936 iiiTED STATES PATENT OFFICE Robert R. Robertson, Chicago, Ill., assignor to The Translode Joint Company, Chicago, Ill., a

corporation of Illinois Application July 7, 1934, Serial No. 734,096

13 Claims.

The present invention relates to an improved road expansion joint including end closure means for the joint void, and a ller supporting bridge comprising bridge members which are releasably supported on the core forming plates and are left in position with the removal of the core plates l allowing notched portions of the bridge members f to be deflected inwardly to be interlocked with f one another to form an arched support for the c rcception of a filling of plastic material to close the upper po-rtion of the joint void which is left in the concrete above the load transmission base Y unit'in which the core plates are originally supported.

tf-.2 It is an object of this invention to provide a l road expansion joint forming unit including iridgemembers which are removably supported .on the core plates and are left in position with the removal-of .the core plates after the pouring (y, .of concrete 13o-permit portions of the bridge members to be lbent inwardly to bridge the void and to 'ioeitingly interfit one 2 another to form a suitable 'uppcrt for a filling of a plastic material to parially fili the upper portion of the void between if; adjacent concrete sections of a road.

it is also an object of this invention to provide a road expansion joint with bridge members adapted to be partially embedded in the concrete and having portions thereof projecting into the mi. expansion joint void to be interlocked with one another to bridge the joint void and afford an arched support for a filling of plastic material to `.ornplete the upper portion of the expansion joint between concrete road sections.

it is a further object of this invention to provide an expansion joint void spanning unit including angle members having notched flanges adapted to bev moved into inteifitting relation with one another with portions of the notched flanges m bent over to interlock the bridge members with one another to form a support for a plastic filling for closing the upper portion of the road expansion joint.

It is an important object of this invention to ..5 provide a road expansion joint forming mechanisrn including a load transmission base for removably supporting a void forming core unit in place between concrete road sections, said core unit having removably supported thereon filler so supporting bridge members which are adapted spect to one another to form a support for a filling of plastic material to close the upper portion of the expansion joint.

Another important object of the invention is the provision of an improved type of road joint filler supporting bridge unit including angle members comprising base anges having pockets formed therein and adapted to be embedded in concrete and bridge flanges adapted to project into an expansion joint void, with each of said bridge anges having the upper margin notched to form spaced flaps or tongues which are adapted to permit adjacent bridge iianges to intert with one another allowing the aps to be deiiected to form an interlocked ller ridge to permit a filling of plastic material to be deposited in the upper portion of a road joint to close the same.

Other and further important objects of this invention will be apparent from the disclosures in the specification and the accompanying drawings.

The invention (in a preferred form) is illustrated in the drawings and hereinafter more fully described.

On the drawings:

Figure 1 is a vertical detail section of a concrete road structure just after the pouring of concrete and illustrating a load transmission base unit having a removable core supported therein on which improved bridging members are releasably supported, during the pouring of con; crete, by a removable core cap.

Figure 2 is a similar section of the completed expansion joint with the core unit and vcore closure cap removed and with the bridge members projecting across the expansion joint void and interlocked with one another to form a support for a filler of plastic material for closing the upper portion of the expansion joint.

Figure 3 is a fragmentary plan View of a portion of one of the bridge members before being bent into shape.

Figure 4 is a top plan view of the bridge unit showing the interlocking relation of the notched flanges of the bridge members.

Figure 5 is a detail section of the ller bridge unit showing the notched flanges intertting one another prior to the deiiecting of the flaps.

Figure 6 is an enlarged fragmentary transverse section of the interlocked bridge portion of the bridge unit illustrated in Figure 4.

Figure 7 is a fragmentary top plan view of a load transmission expansion joint, before the pouring of concrete, illustrating the temporary position of the bridgey members and also showing the adjustable end closure unit for closing the outer end oi the expansion joint core unit.

Figure 8 is an end elevation of the closed end of the expansion Yjoint mechanism illustrated in Figure 7. Y

Figure 9 is a fragmentary side elevation of the joint mechanism illustrated in Figure 8.

Figure 10 is a fragmentary perspective view of a, modified form of an expansion joint filler supporting bridgeunit.

As shown on the drawings:

In Figures l and 2, the concrete road sections lare illustrated disposedY on opposite sides of f an expansion joint constructed by theV use of improved expansion joint forming mechanisms embodying the principles of this invention.

The present invention covers an improved 'type Y of air expansion joint for roads and'similar concrete vconstructions and includes in combination an improvedload transmission base. unit in which a removable Vcorel unit is supported for Vtemporarily supportingin position, during the pouring of concrete, improved bridge members adapted to be moved into interlockingY engagement with'one another to span the Void resulting from the remo-val of the core unit from between the concreteroad sections, to permit a lling of a bituminous or plastic material to be deposited on the bridge unit to close the upper portion of the expansion joint.

. The base unit of the road joint former serves as a Vload transmission mechanism be-tween the i adjacent Vsections of the concrete road construction and in the present joint comprises-.an Velongated base member consisting cfa solid base plate 2 constructedcf sheet metal or'other suitable material. Y

The longitudinal Vmargins of the base plate 2 Vare bent upwardly and then inwardly toward one another toV form oppositely positioned guide channels 3 which provide oppcsitely positionedV guide spaces or grooves il'. The longitudinal margins of the top plates of the `base guide channels are cut away at Yspaced intervals, with the Ynotches in one margin being staggered with respect to the notches in the opposite margin to provide staggered flaps or extensions which are bent up.- wardly at substantially right angles to form staggered retaining tongues or lugs 5, the upper marginsfofwhichrare curled inwardly to form curved Vlips. 5.1 The outwardly projecting retaining tongues 5 on each side of the middle portion of the base unit areV separated by notches or recesses for the reception yof anchor units which Y'will hereinafter be more fully described. The

grooved or channel base' member forming part of the base unitis usually provided in a stand-V ard length of substantially-half the width of the road and extends from the outer side of the road inwardly Vto the roadY center strip. The base unit, however, may be provided in shorter lengths if sodesired. Y

The base member has associated therewith a Vplurality of load transmitting mechanisms con- Y Vsisting of a plurality of anchor shoes or holders I which Yare movably or shiftably engaged in the base section and are arranged longitudinally in offset or staggeredV relation with respect toene anotherf The anchor Yshoes or holders are of substantially identical construction and are ar-V range-d with the adjacent shoes Vreversed'with respect to oneanother as clearly illustrated in Figure 7. Each of the anchor shoes isconstructed ofinetalaand comprises an angle bar'including tion with adjacent shoes reversed with respect to Y one another, so that the anchoring blades or Wings 9 project outwardly leaving the flat sides of Athe .upright webs .or flanges of the anchoring shoes Vfacing inwardly. As clearly illustrated in Figure 1, the. anchoring shoes are staggered with 'Y Y respect to one another so that the upright flanges Bimay be seated in the notches provided in the 'top flanges of the base section between the retaining tongues or flaps 5j and slightly to the Y Voutside of said tongues 5to afford retaining spaces between the inner surfacesof the upright flanges 8 and the outer faces of the retaining,

tongues 5 of `the base section.

The outermost anchoring shoe, in each of the with a `closure means for closing theouter end ofthe vo-id forming core unit, and the outer end ofthe void resulting from the removal of the core a unit after the pouring of concrete which forms the upper or crown section ofthe road; The cloj basesections of the device, has connected there- Y SuremeanSfOrthe core unit comprises avprimary closure plate vIil (Figures '7 to 9 inclusive) which Vis.Weldedorotherwise rigidly secured to the end Vof the anchor shoe and is cut inwardly atV I and I2 to form an upper flapI3Y and a lower flap I4 as clearly illustrated in Figure 8. The portion of-.the plate between the cuts Il and VI2 is bent atisubstantially right angles to form a wing plate;4

I5 :having Yan anchoring blade I,6 integrally 'formed thereon and projecting outwardly to serve asameans for anchoring the wing plate i5 in the Yconcrete of a road section. The 'opposite vertical margin of the main closure plate I D has slid- Yable interfltting or telescoping engagement with va'hollowor U-shaped plate receiving pocket Vor socket I'I. The y wall` of `the guideA pocket I1 f nearestthe concrete` section of the road is pro- `Vvided with an extension plate I8 (Figure 7) which .lies flat againstitheinner side of the mainplate Ill andhas integrally Yformed thereon afwing plateA I9 Vpositioned substantially parallel to the wing plate I5.

Integrally fo-rmed on the wingV Lplate ISisan outwardly directed anchoring blade f or-wing 20which is adapted to be embedded in the concrete forming an adjacent concrete secguide vpocket I1 in position. f

A'The void forming core unit of the joint form .tion of '-'theroadfor the purpose of holding theV margins thereof projecting downwardly between` 60 Y .ing mechanism comprises a pair of metal plates Y I 2|.. which are spacedapart and have the lower V` thelflat surfaces of the upright anchor shoe Yflangesi Band the staggered spring-like retaining `tongues or lugs 5 as clearly illustrated in JfFigure 1 to holdV the lower margins ofthe core wplates properly spaced apart. The outer vertical edges of Ythe core plates .2l are in contact with the inner faceof the mainY or primary closure platel. The:outer sidesof the upper margins of the two core plates 2| are cut out to provide seatsor shoulders Y22; The seats or shoulders 22 Y provided near the upper margins of Ythe coreY @plates 2 I afford-temporary. seats-for a pair of oppositely positioned bridge members and cap supports each comprising a base flange 23 having cups or sockets 24 struck downwardly therefrom to form recesses for the reception of concrete to hold the base flange 23 securely embedded in a concrete road section I. Integrally formed with the base flange 23 is a bridge flange 25, the upper margin of which is provided with a plurality of spaced notches 26 leaving a plurality of spaced aps or tongues 21.

For the purpose of holding the bridge members temporarily in position on opposite sides of the upper portion of the core unit, a removable channel shaped form or closure cap 28 is engaged over the spring-like upright bridge flanges 25 with the side flanges of the removable cap projecting downwardly to seat upon the horizontal base flanges 23 of the bridgeV forming member. As clearly illustrated in Figure 1 the side iianges of the cap 28 hold the bridge forming flanges 25 clamped against the outer surfaces of the upper portion of the core plates 2|. Welded or otherwise secured within the closure cap 28 at spaced intervals are a plurality of springlike spacing boxes or tubes 29. The spring-like spacing boxes or members 29 project downwardly between the upper margins of the core plates 2i to hold the upper margins properly spaced apart.

With a load transmission base unit supported on the road subgrade, and with the core plates 2| removably seated thereon to support the bridge forming angle members in position on yopposite sides of the upper portion of the core plates by means of the removable closure cap 28, concrete is poured to form the upper section of the road on opposite sides of the road expansion joint forming mechanism. After the pouring of the concrete as illustrated in Figure 1, the concrete is allowed to set a desired amount. The closure cap 28 together with the spacing boxes or member 29 forming a part thereof are rst removed from engagement with the upper margins of the core plates 2| thereby permitting access to be had to the core plates. The core plates are next moved inwardly toward one another and are lifted upwardly out of the core space formed between the concrete road sections l leaving the air expansion chamber or void 30 above the base unit. With the removal of the core closure cap and the core forming plates, the bridge anges 23 remain embedded in the concrete and the flanges 25 are left projecting into the upper portion of the void 30. The end closure plates I0 and I8 at the end of the core unit are also left in position to close the outer end of the expansion void 3U.

For the purpose of closing the upper portion of the expansion void 30, the bridge anges 25 of the bridge members are bent inwardly toward one another to span the void 30, and the upper notched margins of the flanges 25 intersect one another as illustrated in Figure 5 after which the tongues or aps 27 of one ange are bent downwardly over an adjacent flange as illustrated in Figure 6 to interlock the bridge flanges 25 and form an arched bridge closure for the upper portion of the expansion void 30. The space above the bridge is now partially lled by means of a filling of plastic material such as asphalt or the like to form a compressible and expansible filler block 3|.

Figure 10 illustrates a modified form of an expansion Void bridge unit consisting of a pair of angle members comprising base anges 32 and bridge flanges 33. Integrally formed on the upper margin of one of the bridge iianges 33 is la bridge strip 34 which has retaining lugs 35 struck outwardly therefrom to be projected through slots or apertures 36 provided at spaced intervals in a bridge strip 31 integrally formed on the upper margin of the second bridge flange 33.

The base flanges 32 of the bridge angle members are adapted to be embedded in concrete of opposite or adjacent sections of a road section while the bridge members 33 are left to project into the void between the sections. When the bridge fenders 33 are deiiected inwardly, the bridge strips 34 and 31 are moved into abutting engagement with respect to one another so that the lugs 34 project through the slots 36 and are bent over to hold the bridge strips clamped together to form a closed arched bridge unit for the support of a plastic ller to close the upper portion of a road expansion joint.

This improved invention embodies an air expansion joint forming mechanism for roads including a load transmission base unit having a removable core unit supported thereon with the outer end of the core unit closed by means of an adjustable closure means supported on the base unit, and retainable in position after the removal of the core unit for the purpose of closing the outer end of the expansion void. The joint forming mechanism furthermore includes improved bridge units constructed of bridge members which are partly embedded in the coni crete sections of the road, and have bridge forming portions which project into the expansion void and are interlocked with one another to provide an arched support for a plastic filler used to close the upper portion of the expansion joint.

It will, of course, be understood that many details of construction may be varied through a wide range without departing from the principles of this invention, and it is therefore not the purpose to limit the patent granted hereon otherwise than necessitated by the scope of the appended claims.

I claim as my invention:

1. A concrete construction joint former for embedding in concrete and including in combination a base section, an anchoring unit shiftably mounted therein, a core unit having open ends and removably supported on said anchoring unit and removable from the concrete to leave an expansion void above the base section, means carried by the anchoring unit for closing one end of the core unit and the expansion void resulting from the removal of the core unit, and bridge members releasably carried by the core unit and retainable in position partially embedded in concrete when the core unit is removed after the pouring of concrete, said bridge members adapted to be deected into interlocking engagement with one another to form an arched bridge for supporting a ller of plastic material to close the upper portion of the expansion joint void resulting from the removal of the core unit.

2. A concrete construction joint former for embedding in concrete and including in combination a base section, an anchoring unit shiftably mounted therein, a core unit having open ends and removably supported on said anchoring unit, means carried by the anchoring unit for closing one end of the core unit, and bridge members releasably carried by the core unit and ll l reiinable in posiioaperiialyiembaddediawnf cretewhenithe coreunit is removedrromzaf'conf-V.v

crete construction. to leave" Van expansion'v space f therein, saidbiidge members adapted to halveA freeportions ,thereof deflected inWardlyto bridge4v the expansiongspace, said .bridge membersQincludingY interfitting means for interlocking the bridgeA members with one another to?. form aV bridge'to serve asV a support for a plasticV iillerfor .closing lthe upper :portion ,of j the expansion spa'cejA i' Y' 3.`f'A concrete Y. construction..l jointY mechanism for embedding in.concr`ete, i j prising a load transmission basefacc-re unit removably supported. therebyl andy removable from. .the .concrete `con s tructirnfito :proridexan Vexpa'nsio'nlvoid therein, and filler supporting the o core unit members ,temporarily carried N l o n d .in thereonar'd remaining .partially embe crete,to-besupported.thereby when the core unit is; removedgsaid i'lller supporting members including deflectabie ,por-tions, projectible vinto the void toward one another-.to span the same, said portions of vthe llersupporting members formed to interlockone anotherto permit afplastic `filler to beengagedonsaid portions in the upper portionof the expansionjjoint to close the-same.u

'4. A concrete construction jointV forming mechanism for embedding inconcr'ete and com -Y prisng a load transmissionbase,Y aocore unitrem'ovably supported. thereby land removable Airom the concrete construction to leave void jthere-Y in, illler supporting members temporarily car- Vried by the core unit and retainableV inV position partially embed-dediti the concrete and supported thereby when the core unit -is removed and means forming apart of the filler support- Y ing members Yand..1cirojecting intof the void intoengagement with one another '-forinterlocking the members-with one another to span the expansion void and form aV support fora `plastici-111er forclosing the upper portion joint.

5. VA road jointl former comprising. .incombina-A tiona core .unit for removable engagement in concretegflllen supporting members including de- VectableY parts temporarily engaged yWith ,thecore snit, Ysaid members adapted to remain in position in the concrete and be supported thereby when thehcore unit is removed therefrom, and

, means on said deflectable parts for interlocking Y the same' one to another when the `deilectable 'Y YFS fand supported thereby when the corerrunit is reparts are Ybent inwardly to span the void resulting from the removalrof the core unit from the concrete. Y

6, A concreteconstruction joint former comprising a load transmission base unit, a core unit thereon for embedding in vconcrete and removable to leave a void in the concrete, ller.

supporting members releasablycarried by the coreunit and partially embedded in the concrete moved leaving `portions of said members projectingino the voidjto be deflected into contactwitn each other, and tonguesY integrally formed onV the iller Ysupporting members for interlocking the iiller supporting members onewith the other to form a ller supporting bridge spanning theV joint void resulting fromY the removal of vthe core unit.V Y

. 'L1A concrete .angle members includingvfbase.. flangesrhaving VofY the expansion construction former com-V prising a load transmission base unit, a core unit removablyV supported thereonto be v,ernbedded in" concrete Yand'mremovable from Ythe concretey toleave LVoid therein, andi filler. supporting mem'- f bers releasablycarried bythe core .unit and partially iembeddegl;in theconc'rete' to, be. supported therebywhen. the core unit isilremovedvi said filler Supporting `members deilectableqtoward one an-, otherintoithe void andhaving rstaggered tonguelike means ygfor interlocking the fillerV supporting. members ronen/ith another to form a iiller supporting bridgetoclose the upperportionof the. joint void resulting from removal of vthe core.

8 IA ,concrete road joint; `former comprising ,in

Vcombinationfa core :unit for embedding inV concrete fand removable from the concrete toleav'e.

a @void therein, and vfiller supporting'members Y cafrriedbyr the coreVunitandvprojecting into and retainable byfthe Vconcrete v*and rhayingportions projecting v into dtlieivo saidv portionsv deectable'towardone anotheninto thevoid and hav-V with4 the tonguesojf oneiiller supporting member staggered Withrespectto those .of van adjacent ing spaced/,tongues integrally. formed. thereonQp.

member to Apermit thelfiller supporting members toflbe*` 'interlockedl with'fone anotherr with the tongues of one member bentdownwardly over an adjacent membet Y 9; road joint ller bridge unit comprising inv combination a pair oi angleymembers partly embedded in opposite sections Vof concrete, saidY staggered sockets. thereinandV bridge flanges including notched marginal portions adjustable into interiitting relation with one another when the bridge flanges Varepdeected ltoward one anotherr to span the space between adjacent concrete'gsections to form ajsupport for a `i-lller Vfor closing the upper portion of a roadV joint.

lQ.jA road ,joint ller bridgel unit comprising in combination a pair of angle membersincludingsupporting flanges to be embedded in oppo- Y site-sections of concreta-said angle members also including bridge ilanges having spaced deflectable-tongue meansY forY lockingly intertting the bridge flanges together tor-formi. a support for a plastic filler for closing the-upper portion of the space between oppositesections of concrete.

. 11-. In a road expansion jointVY mechanism: of i iiller.. supporting bridge-unit comprising angleV members Yincluding base flanges and deectable theclass described including. inf.l combination a bridgeflanges, `said bridge ilanges having the Y* longitudinal marginsI thereof--formed to locking-ly intert one another-Whenthe bridge flanges arejbentstoward one anothertoV form an *archedv filler support. Y f

A vroad joint .iller bridgevunit for use a concrete *.road.. andv comprising.. in combination a membersjeach consistingof baselflanger having 70 y f Y socket meansformed therein' anda bridge. iiange Y having tongue members Y for interlocking the angle members one to the other.` Y

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