US2893786A

US2893786A - Bracket type scaffolding, adjustable in height, slidingly, for concrete wall erection

Info

Publication number: US2893786A
Application number: US639470A
Authority: US
Inventors: Faye Louis
Original assignee: Individual
Current assignee: Individual
Priority date: 1956-02-10
Filing date: 1957-02-11
Publication date: 1959-07-07
Anticipated expiration: 1976-07-07

Description

July 7, 1959 l.. FAYE BRACKET TYPE sCAEEoLDTNC, ADJUSTABLE TN HEIGHT, sETDINCLy, FOR CONCRETE WALL ERECTION @sheets-sheet@ Filed Feb. ll. 1957 July 7, 1959 2,893,786

L. FAYE BRACKET TYPE SCAFFOLDING, ADJUSTABLE IN HEIGHT, SLIDINGLY, FOR CONCRETE WALL ERECTION Filed Feb. 1l, 1957 2 Sheets-Sheet2 BRACKET TYPE SCAFFOLDING; ADLIUSTABLE IN v `Iel1LIGIJ1il-`,\` SLIDINGLY, FORI'CONCRE'IE- WALL There has` been disclosed,v in applicant-s previous French Patent No.` 998,293, of October 28, 1949,. and inthe patent entitled Flanking Apparatusrfor Concrete' Walls, ledon February I5, 1955-, a planning apparatus for the erection.. of, .concrete wallsin successive courses-, which consists essential-ly of poler elements', to beasuperposed on one another.

The positioning. of .apparatus-as: weli as; .the casting operations for the successive concrete courses require a seatoldingwhich, according to known methods `and for walls-nota certain height, is dicult to buildV and not Mery' convenient in use.

The object ofthis. invention is an apparatus, which makes it: possiblev toform a bracket' type scaioldiug mounted slidingly on the erected portion; off the wall to be built, and'. movable upwards by thel height on' one course after the casting ofeaclr course;

In this apparatus, rectilinear elements of: ai rollinggt-rack shouldabe secured vertically, end to end; against the workingr face of the wall to be erected-f for formi-nga rolling ,track extendingdown-wa-rds Iof each columnA of. pole elements or certa-in of these columns,.fone uprightffor eachl one of these coiumns-z Iof poleelements carriesl avpairi ofupper rollers for rolling engagement inside the rolling track, andi a: lower roller for carrying. against the face of' the Wa ll av removable. bracket. to be. secured Vagainst face of the wall and which supportsdheL-Weight ofi-.the upright and holds it atthe required height for. thegerecti'ori ofV gael;Y course, andalso supports doors resting at=various leuels on twol consecutive. uprightsi ser-vingI as working stations.

The. nature and advantages of this invention will. kap,- pearmore completely from` thedeseription o onetype of embodiment which: will be. given hereinafter by way of illustrative and nonlimitative example, with reference to theappendeddrawingwherein: v Figure: 1 shows,in section, a. concrete Wall, beingbuilt the. completion. of the. casting forwhich` the two. pieces of planking and scaffolding apparatus have been placed'` in position. f Y

Figures 2 to. 6 are, sections,` on a, larger scale, respeta` tivgly along IIe-II tol VI.--\ZIY of Figure 1Y showing various details.. Y

I n the arrangement.' represented in the drawings, the Generate; wall 1f is being erected' by using, on rveach face, planking columns formed;` of three superposed pole elemental! The scafioldirrgA apparatus according t0. die invention is'to bel mounted' along theworling'face. Y The right hand face, according to the section in Figure l, c o'rrnpiises three identical rolling track elements. Seach; having the, height offa concrete course and tohear'ranged :United States vPatent:

ICC

2 v vertically, end to end, and under the column of. the three pole elements 2 against the workingv face. Each one' oi these rolling track elements 3 consists of a square tube bored with a hole in the face-to4 be laid against the working face, and with twoV holes in register inthe side faces. and provided withA a longitudinal slot on theL front face. Each one of these elements 3 thus constituted is secured against the working face,` as may be seen in Figures 2 and. 3 by screwing a nut 4 on a bolt 5.v Said bolt 5f whichy is engaged inv one of. the holes left free: through? the wall by the removal of the assembling rods Z3' ofthe removed planking apparatus used for the erection of that portion of the Walla The head of this bolt 5A which bears on the face of the wall opposite the working fac'eis shaped'with a bearing collar and an anchoring spike' entering the concrete when the collar is brought to bear and thus immobilizing the bolt in rotation.

The apparatus also comprisesl an upright which-fis formed, essentially, of a pair of

angle irons

6, 6 spaced? fromv each other and of another pair of angle irons 7,. 7 with the 4same spacing, which: angle iron pairs' aref connected together by tubes 8, 9;'10, each one-of which is V bolted, throughv each one' of. its ends, between two angle irons 6, 6and 7, 7v of` one ofthe Vtwo pairs. Tle two pairs' of angle irons 6, 6- and` 7, 7; are also connected by a tier bolt formed lof twoy ilat parts 11, 1-1 united by bolting on both sides of. two at irons-12 andk I3. The` ilat iron. 13, which is arranged between' the two angle:

irons

6, 6 extends towards thev working face beyond) these angler irons and= carries a pair of rollers 14 which.- engage inside 'the rolling track and, specifically, inA that portironof the rolling trackconstituted by theirst one; from the bottom, of' thev three elements 31 Eachv` one of the two ends of a square-tube 15 is bolted betweenthe lower ends` ofv the tvv'o angle ironsL 6,6- and of=ftlhe two angle irons 7, V7 andthisy square tube 15 carriesv

ribs

16, 17 through which slides a flat iron1-,8;` oneend' of which, extending beyond the painV of angle irons 6', 6 towardsY the working face is.' terminated by a2 pair of= rollers 19,. 19 bearing onfthat face. The pair-of

rollers

19, 19 is madey tobear against the` wor-king` face z'tcclo'rcl-r ing to an adjustable position by afscrew 36 engaging a lixed nut 3'7-'welded onthesquare tubef15,

At the heightv of one concrete courseabove thev tie-bolts 121-13 a flat iron133 is mountedl between the ltwo angle,- ironsf 6, 6- inasimilar. manner toV the. ilatl iron. 131.` ofet-hat tie-bolt. 11-13, towards thel Working faceVY and? carries across piecev 3'4 engaged'inv that` partof the rolling'tr-acle constituted by the second onefrorrr the bottom, ofthe three rolling track elements In addition, a-k removable pin 35 isengaged, transversely in thatrolling tracht ele.- ment through thefholes. on its-side faces, slightly underneathA the level. ofY the lower face: of thecross piece; 34:` Av tube-Z0, boltedat one endbetween the two anglelirons: 6 6 rests by its other end,.whch is locatedbetweenthetwo

angle irons

7, 7 onthe'shank ofabolt 39 the p osif.- tion of which, iny a pair. ofholes facing each other to-be selected out of a seriesl off pairs ofholes- 40 in these two? angle ironsk 77 makesit possible to adjust at will thein-Y clinationof. that tube1 20 with,r respectto the Aanglelirons'. 6 along the workingfface. 'lwo Hat irons 21,bolteclre-v spectively attwo.A points in register inltheltwo an'gleirons 6, 6 are drilled with a series of holes andI shanlioifa bolt engaged into two' corresponding holes tol besel'ecte'd; in these series causes these two. anglev irons toy restlonltlie tube 9 withv an adjustable inclination. At a lower level a tube 22 is arranged between the

angle irons

6, 6 and 7, 7 in the same manner as the tube 8. Lower down, a tube 24, bolted between the two

angle irons

6, 6 is braced on these angle irons by a bracing tube 25 also bolted between the

angle irons

6, 6. Finally, about the bottom of the upright, two flat irons 26 bolted on both sides of the tube are stopped with an adjustable inclination on the shank of a bolt to be mounted in one pair to be selected out of a series of pairs of holes drilled in the pair of

angle irons

7, 7. On the tubes 20, on` the pairs of iiat irons 21, on the tubes 22, on the tubes 24 and on the pairs of flat irons 26 of two consecutive uprights, floors are mounted which constitute various working stations stepped in height and which may be arranged horizontally for the various inclinations of the working face and consequently of the pair of

angle irons

6, 6 along that working face. Against the two

angle irons

7,7 and above the tube which supports the floor of the highest working station, a tube 38 is welded forming a guard, or hand rail. The upper ends of the

angle irons

6, 6 and 7, 7 are provided with holes for the fastening of a gantry for supporting the pulley for hoisting the materials.

The apparatus also comprises a bearing element, in which the essential element is a tube 27 to be inserted between the

angle irons

7, 7 and 6, 6 and terminated, about the working surface by a rectangular tubular fastening part 28, the face of which, facing the working surface is drilled with a hole. This tube may thus be secured normally to the Work-ing face by a bolt 5 and a nut 4 similarly to the rolling tracks 3. For constituting the bearing element, this assembly of the tube 27 and its fastening piece 28 is completed by two

angle irons

29, 29, acting as rest pieces, the upper ends of which are welded on both sides of the fastening piece 28 and the lower ends of which are bolted on both sides of a tube 30 which braces the tube 27 to which it is welded. The upright is provided with two bolts 31 and 32 connecting the two angle irons, respectively of the two

pairs

7, 7 and 3, 8. This upright, being positioned with the two angle irons of each pair on either side of the

tubes

27 and 30, is ysupported by the shanks of the two bolts 31 and 32 on the upper tube 27 of the bearing piece, and thus this bearing piece supports the whole weight of the upright. Furthermore, this bearing piece maintains the correct orientation of the upright by preventing all side warping thereof.

The apparatus also comprises an orientation bar consisting of two elements 27a and 28a identical with the

elements

27 and 28 of the bearing piece 27-30, and which is to be secured in the same manner, normally to the working face, at a higher level.

In order to pass from the arrangement of Figure l to the working arrangement for casting the next concrete course, the first elements 2 from below are dismantled, according to a known method disclosed in the two abovementioned patents, and again on all consecutive columns of pole elements, for re-assembling them, by means of their assembling rods 23 above the third ones. By means of a hoist attached at P on the fastening part 28a of the orientation bar 27a-28a and tied at Q on the bolt 31 mounted between the two

angle irons

6, 6 the upright 6-6 is raised by the height of a course corresponding to the vertical interval of two consecutive holes left free through the wall by the assembling rods 23 which were used for securing the planking apparatus. The pin 3S is removed from element 3 in which it is engaged and which has become the first one from the bottom for engaging it into the upper element which has become the second one. Should the hoist become slack, due to a Wrong operation, the upright 6-6 is then suspended by the at iron 33 bearing on that pin 35. The bearing piece 27--30 is disassembled by removing the nut 4 and bolt 5 which secures it and during this operation the upright 6-6 remains protected against any side warping by the 4 action of the orientation bar 27a-28a. The bearing piece 27-30 is again secured by means of its bolt S and nut 4 to be engaged in the upper hole of the wall. The hoist is then removed and the upright 6 6 then rests again by its bolt 31 on the bearing piece 27-30 thus displaced. The rst elements 3 from the bottom are then disassembled for assembling them again above the third ones at the locations left by the removed elements 2. The orientation bar 27a, 28a is then disassembled and raised by one course. The whole planking and scalolding apparatus is then, in the working arrangement of the drawings, at a level which is higher by the height of one course. In cases when the inclination of the wall to be erected varies with height, the bearing of the roller 19 on the working face is controlled by acting on the screw 36 so as to place the working stations resting respectively on

elements

20, 21, 22 and 26 and particularly the main working station resting on element 20 at the desired distance from the working face. By displacing the bracing bolts in the corresponding holes, the

adjustable elements

20, 21, 22 and 26 are set horizontal and, consequently the floors resting on these elements. One may then proceed with the casting of the next concrete course, hoisting the materials by means of a pulley hanging from a gantry shaped extension, not shown, which is to be Isecured at the upper ends of

angle irons

6, 6 and 7, 7.

Numerous modifications may be made in the abovedescribed form of embodiment with reference to the drawing, without departing from the scope of the invention. In particular, the nature of the semi-nished products used for construction as well as the number and arrangement of the working stations may be chosen at will.

The use of the apparatus according to the invention brings about, especially in the case of high structures, a considerable vsaving in materials and labour as compared with usual methods, in which -a scaffolding is used over the entire height of the structure. Another adfvantage is that `the workmen are always placed at the height which has been selected as most suitable with respect to the portion of the wall being built.

What l claim is:

1. An apparatus for forming a bracket type scaffolding mounted slidingly on Ithe built portion of a wall to be built by casting successive concrete courses in a planking held by columns of superposed pole elements in which the lowermost element is removed after the casting of one course for securing this element above the uppermost element and holding the planking of the next course to be cast, said apparatus comprising rectilinear elernents of a roller runway to be secured vertical- 1y, end to end, against the working face of the wall to be erected for forming a runway extending downwards along the pole elements, an upright for each one of these runways, a pair of rollers mounted on each one of these uprights, said pair of rollers to be engaged for rolling inside the runway, a bearing for each upright, said bearing to be attached against the working face for supporting the weight of the upright while holding said upright -at the proper height for the construction of the course to be cast, and platforms to be mounted at various levels between two consecutive bearings for serving as work stations.

2. An apparatus for forming a bracket type scaffolding mounted slidingly on the built portion of a wall to be built by casting successive concrete courses in a planking held by columns of superposed pole elements in which the lower-most element is removed after the casting of one course for securing this element above the uppermost element and holding the planking of the next course to be cast, said `apparatus comprising rectilinear elements of a roller track to be secured vertically, end to end, against the working face of the wail to be erected for forming a runway extending downwards along the pole elements, an upright for each one of these rolling tracks; a pairlofl `rollers :actuatedv eireael one of these uprfsi'rts; said) pair) of rollersto be engaged for vrolling insdethe'ronwsr, anotherV pair: of rollers assisted; on theupright undermeath the rst pair of`roilers, a bearing for each upright seid hearing .to be attached against the working Vface'l for` supporting* the weight 'of' the uprigh-t at anint'etinedatgipoint betiweeifthe rst and second pair of rollers while holding4 said upright at the proper-height for the construction"of}the cou-rsefto'be cast, said luprighttending tol pivot by gravity about said intermediate point'iniithadrectiorr torove the rst pair o ,rollersaway from, and the second-.pair orollers towards, said worki'r'ifg''faceV by urgingthe rollers of said first pair against said runways and the rollers of said second pair -against said working face, and platforms to be mounted at various levels between two consecutive bearings for serving as work stations.

3. An apparatus for forming a bracket type scaffolding mounted slidingly on the erected portion of a wall to be built by casting successive concrete courses of equal height in a planking held by columns of pole elements superposed on one another in which the lowermost element is removed after the casting of one course, thereby leaving free, in the built portion of the wall, a hole 'which has been used for the fastening of this element in that position for securing this same element above the uppermost element and holding the planking of the next course to be cast, this apparatus com,"- prisin-g rectilinear roller runway elements, each one of these roller runway elements having the height of one course to be cast, being of a prismatic tubular shape and having a yrear face drilled with a hole and a front face provided with a longitudinal slot, the pole elements having to be extended downwards by a rolling track to be formed vby mounting end to end a series of rolling track elements each one of which is secured by its rear face against the working face by bolting through the hole of said -rear face and of one of the holes left free, in the erected portion of the wall, an upright for each one of said roller runways, a pair of rollers mounted on each one of these uprights, said pair of rollers to be engaged inside the roller runway, another pair of rollers mounted on the upright underneath the first pair of rollers, a bearing for each upright, said bearing to be secured against the working face for supporting the weight of the upright at a point intermediate between the first and Second pairs of rollers, while maintaining this upright at the height required for the construction of the course to be erected, said upright tending to pivot by gravity -about said intermediate point in the direction to move said first rollers away from, and said second rollers towards, said working face, by engaging the rollers of said rst pair behind the front face of the elements of said runway on either side of the slots formed in said front faces, and engaging the rollers of said second pair against said working face, and platforms to be mounted at various levels between two consecutive bearings for serving as working stations.

4. An apparatus for forming a bracket type scaffolding mounted sl-idingly on the erected portion of a wall to be,

built, by casting successive concrete courses in a planking held by columns of pole elements superposed on one another, in which the lowermost element is removed after the casing of a course, while leaving free in the erected portion of the wall a hole having previously served for securing said element in that position above the element occupying the topmost position and holding the planking for casting the next course, said apparatus comp-rising rectilinear roller runway elements to be secured vertically end to end against the working face of the wall to be built for forming a roller runway extending downwards along said pole elements, an upright for each one of these roller runways, said upright comprising two rectilinear angle irons arranged parallel to each other at a certain and relatively small spacing and on either side of a plane of 'symmetry "of this upright, two other! rectilinear .8111816 .irons .sufranged'y parallel to each other' at the sameA spacing as said-two tiret .angle-rons.`and'symmetriea11y with respect to said plane of symmetry of this upright, and .cross-stays and braces rigidly eonneetngA `said two .second angle irons with .said two .first angle irons, a pair of rollers mounted on eaeh one of said upriehts and protruding' between the first two anale irons on the v.side opposite to the second two-*angle irons,l saidnair of rollers vto be engaged for rolling inside the roller runway, another pair,v of' rollers Imounted on .said upright and protruding kbetween the Yfirst ,two angle irons above'tjhe first pair of rollers, a bearing for each-upright to be secured 'normally against the working face underneath the roller runway by engagement in one of the holes left free in the erected portion of the wall, said upright thus secured against the working face being engaged between the rst two angle irons and between the two other angle irons, while supporting the weight of the upright at a point intermediate said iirst and second pairs of rollers while maintaining said upright in a position in which said upright is at the proper height for casting the course to be built and in which the plane of symmetry of said upright extends at right angles to the working face, said upright tending to pivot by gravity about said intermediate point in the direction to move said first rollers away from, and said second rollers towards, said working face by engaging said first rollers against said runways and said second rollers against said working face, and platforms to be mounted at various levels between two consecutive bearings for serving as working stations.

5. An apparatus for forming a bracket type scaiolding mounted slidingly on the erected portion of a wall to be built by casting successive concrete courses in a planking held by columns of superposed pole elements in which the lowermost element is removed after the casting of one course for securing that element above the topmost element and holding the planking of the new course to be cast, said apparatus comprising rectilinear roller runway elements to be secured vertically end to end against the working face of the wall to be built, for forming a runway extending downwards along the pole elements, an upright for each one of said roller runways, a pair of rollers mounted on each one of said uprights, said pair of rollers to be engaged for rolling inside said roller runways, another pair of rollers mounted on the upright underneath the rst pair of rollers, a bearing for each upright, said bearing to be secured against the working face for sup porting the weight of the upright at a point intermediate said first and second pairs of rollers while holding said upright at the proper height for casting the course to be built, said upright tending to pivot by gravity about said intermediate -point in the direction to move said first rollers away from, and said second rollers towards, said working face by engaging said rst rollers against said runway and said second rollers against said working face, means for adjusting the position of said second pair of rollers relative to said upright and therefore the angular position of said upright to the vertical, and platforms to be mounted at various levels between two adjacent bearings, with an adjustable inclination lto constitute working stations arranged horizontally whatever may be the angular position of the upright to the vertical.

6. An apparatus for forming a bracket type scaffolding according to claim 2, wherein each upright carries, above the first pair of rollers and at a height above said pair of rollers equal to the height of one rolling track element, a clip to be engaged inside the rolling track behind the front faces fof said rolling track, said clipopposing the tipping over of the upright about Ithe lower pair of rollers when dismantling the rolling track element in which the rollers of the first pair are engaged.

7. An apparatus for forming a bracket type scaffolding according to claim 3, wherein each rolling track element has side faces drilled with holes n register and which.A

-7 comprises, at least for some of the rolling track elements a pin which can bev engaged in these holes across a rolling track element underneath a clip engaged in said rolling track element, said pin supporting the weight of the 11pright when the bearing is dismantled.

8. An apparatus for forming a bracket type scaiolding according to claim 4, comprising in addition for each upright, an orientation bar to be secured normally against the working face between the rolling track and bearing by engagement in a hole which has been used for assembling a removed .pole element, said orientation bar thus secured against the face being engaged between the first two angle irons and between the other two angle irons whilernairxtaining said upright in a-rpositionin which the plane of symmetry of said upright is oriented perpendicularly to the'working face thus allowing the disassemblng lof thebearing with no risk of side warping of the upright.

References Cited the le of this patent UNITED STATES PATENTS