US 2888298 A
Description (OCR text may contain errors)
May 26, 1959 PURswELL ET AL 2,888,298 METHOD AND APPARATUS FOR SHoRNGUP A STORAGE l TANK DURNG coNSTRUcToN THBREOF Fied MaTGh 15. 1956 scaffo1d, and 1aftic111arly the Scaffold p1anks 12, to each othef and to the tank SheH, vVhefeby the scaffold will becon1e a figid feinfoTcing nfenlber for the tank sho11 aS IZe11 aS pToviding a crew Vofking area. ThUS, the use of the nlentioned guy lineS rnay be e1in1inated of SubStan tia11y Ted11ced. 1vhile the affangenlent ITlay be secured in nany vvayS, SIlch aS by bo1ting, to each othef and to the bracket, the invention inCorpofates a paTticu1aTly nove1 c1amp Which I1tiliZes ffiction to quick1y forn1 the feinfofcing nlen1bef. II1 this Inannef the SCaffold need not be designed foT tankS having Specific dianleterS but can be feadily accoIIlIT1odated to tankS of varying diafnetefS,
Difecting attention to FigufeS 4 thfongh 6, it vvi11 be Seen that the c1an1p pTefefably CoInpfiSeS a hofizonta1 1ocking bar 15, Said baf may be made Up of Spaced pafa1- 1e1 baTS 18 and 20 having a plufaHty of Spacer Segments 22 fixed1y Secufing baTS 18 and 20 togethef. At opposite endS of 1()cki1g bafS 20, vertica1 tie bafS 24, 24 afe InoUnted iI1 veftica11y n1ovable felationShip thefewith by being S1idab1y feceived vvithin the fornled s1of 25. The tie baTS 24 have theif opposite endS bent in hook-Hke faShion as at 28, 28 the puT OSe of which vil1 hefeinafteT be descfibed. Each tie n1en1ber of bar 24 is provfded With a plura1ity of verticaHy off-Set, vertica11y eXtended Wedge Teceiving S1otS 30.
To ntiHZe the n1ethod and apparatuS of tho hefein diS- CloSed invention and to provide feinforceInent of the tank She11 Undef conStruction, the bfacketS afe fst SecUrely Inounted in poSition on the tank shelL The pIanks 12 are thon SUp ortab1y Inounted on the bfackets vvith the endS of the p1anks in oveflapping Te1ationShip With each othef. 11Zith the plankS 12 in such )oSition, the claITlping arrangen1ent iS then 1ocated With a locking bar 20 in overlying felationShip to the plankS 12 (Figure 3), and the tie baTS 24 in en1bfacing felatioI1Ship zith the outer edgeS of the p1ankS. T11e loWef hook poftion 28 of each tie bar 24 iS affanged to eInbface the downWard1y ex tending f1ange of the baf 8 (Figofe 3). Tapefed wedge keyS 34 ale then i11Sefted in the appropriate key Teceiving S1ot 30 of each tie nlen1bef 24, and dfiven invvardly to veftica11y c1an1 the plankS 12 betv/een the 1ocking baT 20 and hoTiZontal bar 8. ther tapefed keyS 35 afe po Sitioned within t11e S1ot 2o outwardly of each ti baT 24 and driven firn11y into poSition, to clan1p the boardS 12 tightly betWeen the tie bafs 2, i1 a horizontal difection. vvith the Scao1ding Xed1y 1ocked in place in thiS Inan ner, a rigfd Teinfofcing ITlenbef iS pTovided fo1 a poftion of of the entife tank ShelL 1 havo fL11Thef diScovered that to i11cfeaSe the feinfofcing effectivenesS of the af fa1gen1ent the endS of the Scaffold boardS neafeSt the she11 afe pfeferab1y affanged fo engage the She11 Sufface aS at 38, 38. It iS a1So pfefefable that the tie baTS 24 beaf on both the adiacent p1ankS 12 at the vertica1 1ine of iI1nctufe between the uppef and 1oWer over1ap )ing plankS, thuS app1ying hofiZontal c1amping preSSufe to both the uppef and lovvef planks. It v/i11 a1so be noted that the Uppef hook poftion 28 of tie baf 24, iS pfovided to pfevent tho tie baf ffon1 accidenta11y becon1i1g diS aSSeInb1ed ffom the 1ocking baf 20,
1t vvi11 be undefStood that 1 have pfovided a nove1 n1ethod and apPafatuS for quick1y and eaSi1y teTnporarily feinfofcing a tank She11 dUfing 11eld efection whic11 uti- 1izeS ceftain Stfuctnfe that is alfeady pfeSent and a 1eceS Sary incident fo S11ch field efectioI1. The fesu1t iS a considerable fedtIcfion in the fie1d 1abof involved in avoid ing potentia1 Wind danlage to the tan1( Undef constfuction. A fUrthef advantage to the invention diSCloSed occufs When tankS are conStfucted in conned blIi1t Up areaS vVith the fesu1t that adjacent Structufes inteffefe With pfopef poSitioning of guy 1ines, obvioUS1y, the invention hefe e1iIninates the need fo1 extenSive guying up Space in that the tank is shoTted Up entife1y vvithin its ovvn afea, thiS So1ving thiS dicu1ty,
The fofegoing description is by Way of il111st1ation and not 1iInitation and the hefein diSc1oSed invention n1ay be Snbiect to vafiouS n1odiHcations without depafting ffon1 the SpiTit there()f of the Scope of the appended c1aiInS.
1. 111 an affaogement fof tempofaTi1y feinfofcing the She11 of a field efected stofage tank dufing conSffuction t11efeof, the co1bination of a p1urality of SUppofting bTacketS teInpofafi1y secufed to the SheH at spaced intef valS and aTound the entife pefiphery of the she11, a p111- fa1ity of independent plank membefs aIfanged in endtoend adiacent fe1ationship and extending betWeen and Suppofted by the bfacketS to forTn a continuous scao1d aTound the entife pefiphery of Said she11, and a p111fa1ity of IneanS interconnecting the 1ank Inen1beT ends and the feSpective bfacketS to Xed1y SecUfe the endS t() each other and to the respective bTacketS whefeby the Scao1d formS a tempofary figid feinfofcing membef for the She11.
27 /n affangeInent accofding to c1aiIn 1, Whefein each bracket iS pTovided vvith a Substantially hofizontal baf to Support the plank Inen1befS, and each nleans conpfiSeS a 10cking bar to ovef1ie the p1ank IneInber endS, at 1eaSt one tie IneInbef novab1y aSSociated with one of the baTs, said tie IIleInbef being 1ockingly engageab1e With the other bar, and nleanS in dfiving vve(1ge engagement vvith the tie Inen1bef and one of Said bafS to fixedly and frictionany claInp the Te1ated plank Inen1befS between the bars,
In an aTfangefnent fof ten1poraTi1y feinfofcing the SheH of a neId efected Stofage tank during construction thereof, the coInbination of a plurality of Scaffold S11p porting bfacketS Secufed to a continuous she11 ring in spaced Te1ation to each othef, each bfacket havfng a 11ofi Zonta1 bar, Scaffold p1ankS extending betvveen the vaTionS bracketS and having their adiacent endS in ovof1apping re1ationShip with each othef and Suppofted by the hofizontal bafS, 1ocking bafS having S1otS in the endS thefeof and affanged to overlie said 1aI1k endS, tie Inen1befS S1idably Teceived in the Slots at oppoSite endS of each 1ocking baT and affanged to Teceive the p1ank ends thefe betvveen, hooks oI1 at leaSt one end of the tie II1en1bers operable to gfaSp f11e felated horizonta1 bar, vvedge keys dfiVingly inteTpoSed between the tie Inen1befS and 1ocking baf whefeby the p1ankS afe fixed1y damped betWeen the 1ocking baf and the hoIizonta1 baT and the tie Inen1befS, vVhefoby the arfangen1ent fovides a teT1 )oTaTy rigid fein fofoiog member fof t11e sheIL 4. In an affangen1ent fof ten1pofari1y feinfoTcing t11e She11 of a f1eld erected Stofage tank during conStruction thefeof accofding to olaim 3, Whefein ceftai11 of said plankS have portionS thefeof drect1y engaging the she11,
5. As an aIficle of InanufactUe, a c1an1p fof l1Se in an affangement of the type deScfibed, Said c1amp com pfiSing an e1ongated 1ocking baf having s1ots odiacent the oppoSite ends thefeof, tie n1eIT1befs n1ovably feceived in Said S1ofs fof n1oveInent in a difection SubStantially pefpendiculaf to the 1ong axiS of Said locking baf, Wedge nleans receivable in the s1ots outboafdly of said n1en1 befS, hook 1)ortionS foTIned on adiacent endS of Said tie membefS, each of Said tie nlemberS having a p1ua1ity of e1ongated 1ineafly oSet vvedge Teceiving SlotS thefein, and othef vodge means Selective1y receivab1e in Said 1aSt Inentioned s1ots.
1efefeceS C1feo in the f11e of this patent UNITED STATES PATENTS 451,174 SInith et a1 oct. 13, 1891 1,020,154 Syn1onS Mar. 12, 1912 1,148,322 Kees 1n1y 27, 1915 1,6S2,403 Gefdeman Dec, 13, 1927 2,414,538 LaII1b 1an. 21, 1947 2,471,4S9 Stich May 31, 1949 2,539,9S1 A1lenbaugh May 25, 1953 FoREIGN PATENTS 563,833 Gern1any Aug. 15, 1938