US2218819A - Hanger apparatus - Google Patents

Description

oct; 22, 1940.

B. HILLBERG HANGER APPARATUS Filed Jan. 1o, 19:58 2 sheets-sheet 1 OCt. 22, 1940. Y B HILL'BERG HANGER APPARATUS Filed Jan. Vlo, 1938 2 Sheets-Sheet 2 Patented Oct. 22, 1940 i UNIT-En sf-raras -PATENT OFFICE Br-or Hllberg, Chicago, Il1., assignoiyby mesmaA assignments, to Reconstruction FinanceCorporation,v Chicago, Ill., a corporationofthe United States v .Application January 10, 1938,2seria1N0; 184,200

The present invention `relates -generally to hangen-.apparatus for usefin4 suspending from. a horizontally:.extending I-beam or. liker .structural .-element`a form for .euse inthe `formationtof ..a

5 .'concretebeam;forlreproong purposes around .the I-beam. Morenparticularlygthe invention re- .lates Ato that type .of lhangersa-pparatus which is especially. :designed: for use `with 4.a forml embody- Iing `an elongatedgboard-formed `bottom :with ,a

oro-rserieso-f laterally spaced-transversely extending dwooden cleatsA von the. underside thereof .and apair on elongated board-.formed side members ;at, v4and eextendingupwardlyirom, theside edgesI of the .bottom member, and comprises'a series of wire s-.lformed-.cleat encircling straps whichlare adapted v.upon raising'orhoistingy of the cleat equipped :bottom vmember into;p1ace beneaththe I-bearnv -and=before mounting-of the. side members to be ,1 attached tothe Ifbeam and'serve upon ,attachgoment `toy the-.Ifbeamtand after.-.mounting,.of the tsidewmembers,to'thold the form .in place .during ,pouri-ngand settingofthe concrete in connecl: .tion lwith formation of the v'iireprooiing rbeam .-aro'und the I-beam. One object -of .the invention is to". provide Va f hanger r`apparatusof this type which is an improvement upon, and :may beapplied more read- .y ily ,than,l previously designed vapparatus of the same general character and islcharacterizedby :thefact that the wire formed cleat encircling straps-are-.adapted to .be applied4 to the cleat ends ,prior to raising or hoisting of the bottom member -..and-.are.of.-lsuch design and construction that afterfraising of the bottom -member into place f beneath the :I-beam they may be manipulated .into .connected relation with the beam by the operator from a point or lposition ,above the beam.

Another object of theinvention Vis .to .provide yafhanger apparatus oi thetype under considera- `4O..tion-in which the straps areadapted to be. used inrpairs corresponding in number `to thecleats .runder the .bottom ymember of the Aformi-andare so shapednandconstructed that they servee- .vciently and veffectively when. in their operative 45 position. tohold the bottom member of theform wat. a predetermined or i'lxed .distance .beneath the bottomiiange of theI-beam.

.l A further object of. the invention is to provide .,a hanger apparatus .of the last mentioned charfgolacter in which veach of the. straps consists ,of a `vU-shaped wirewhichis adapted to.. form. a sling .ionandextend .upwardly from the c-leatvtowhich it isapplied, and4 has theupper ends thereofbent at substantially right angles. and provided with 55 a heavy .wiredownwardlyA facingv hook forxattach- 6l Claims. y

vment to'one of theside marginsofthe topflange nof the ILbeam.

2A still further-object off-the inventionis toupro- ,facterlunder consideration which may be ffabricated ormanufacturedvatalow and reasonable costaud isfgenerally of'novel and improved construction. n

Other-objects. of the: inventionland the*4 various sadvantages A`and characteristics `of the 'presenti -sideration ofthe following detailed description.

L'Ihelinvention consists in the several vnovel fea- ;rtures .which are hereinafter `set .fortnandxare lmoregiparticularly .fdeiineduby claims at the con# .clusiony .'hereof. f Inthe drawings which-Laccompanyfand forma .partrof .this specification or 'disclosure .and .in f which like numerals `.of :reference denote ,correspondingiparts';A throughout the. several Views: :j

:Figure-1 is a perspective View showing a-hanger apparatus embodying the invention inconnection :xwith` an Iebeam s and r the cleat equipped; bottomv '.member; of-a form for use.intheiformationzofa .concrete :fireproo'ngaround *the I-.beam, and'v :illustrating the manner iniwhich the strapswhich .constitute the. apparatus:arel-adapted/to be .ap-

Iabeam; m .Figure 2Lisa .perspective view illustrating the manner in which the wire'formedstrapsafare apof the bottom memberof thelform'prior to rais- .,ing orfhoisting .of such. member "intoi placeberneath the 'bottornl flange of the Ibeam; f

:Figure-3. isa Vertical transverse sectional View. show-ing the .-cleat equippedv bottom member. vof

:the'forminraised or'hoiste'd relation with the .bottomffiange of the I-beamand the upperhook equipped endsofrafpair ofstraps of the-apparatus l-positioned .over thertop flange of .theIf-bearn -in vrea'dinessfor 'connectiontothe same;

Figure'i isa similar sectional viewshowin ltr-fthe bottomgmember of theform lowered aslightsfdise the hooks of the two straps-n .hooked :oricon- .-1 nected Vrelation with .the side -margins ofethe to flange xof the beam;

Figure l5 'is f a vertical transverse sectional View showing lthe -straps in theirV yform :suspendingv or supporting position and aftenstraightening ofthe slower.- bends iny the intermediate portions- :ofthe strap for-ming shaped-wires;

' Figure 6 -is -a vertical; transverse sectional :view ashowinghehanger apparatusrin its operatilnti` tance from the-bottom flange 4of the'lf-beam'land.l

"vide a hangers-apparatus ofthe' type andffcharlhangervapparatus .will :befapparent fromra con- .plied or connected .to :the :top yflange =.of the vvpl-ied'to the ends of the :cleats von vthe underside position and with the form lled with concrete;

Figure 7 is a ldetail perspective view of a sheet metal bearing forming saddle which with like saddles may be applied to the lower ends of the U-shaped strap-forming wires to prevent the intermediate or connecting pieces of such wires from cutting into the bottom faces of the cleats;

and

` Figures 8 and 9 are front and side views, respectively, of one of the spacers which are used with the apparatus.

The hanger apparatus which is shown Iin the drawings constitutes the preferred embodiment of the invention. It is adapted for use in suspending or supporting a form F around a horizontally extending I-beam I in connection with the formation of a concrete ireprooing B around the I-beam and comprises a series of pairs of straps 8 and 9, Ill and II, and I2 and I3. The I-beam I comprises a vertically extending web i, a top ange i1 and a bottom flange i2. These two flanges are respectively formed integrally with the top vand bottom margins of the web and project horizontally from both of the side faces of the web.

The form F is of conventional or standard design for the purpose for which it is adapted and consists of a bottom member f with a series of wooden cleats f1 on the underside thereof', and a pair of board-formed side members f2. The bottom member f is in the form of a board and is adapted, as hereinafter described, to be suspended by the hanger apparatus at a fixed distance beneath the bottom flange i2 of the I-beam I: The cleats f1 extend transversely of the bottom member of the form and are spaced equidistantly apart, as shown in Figure 1. They are nailed or otherwise suitably fixed to the bottom or underside of the bottom member f, and are of such length and so arranged that the ends thereof project beyond the side edges of said bottom member.' The side members f2 of the form are adapted after suspension of the cleat equipped bottom member from the I-beam by the "y hanger apparatus, to be placed on the ends of the cleats in an upstanding position against the side edges of the bottom member f and to be suitably maintained in xed laterally spaced relation, as shown in Figure 6 of the drawings. After assembly of the form around the I-beam concrete is poured into it and permitted to set in order to form the reproong B around the I-beam as well understood in the art.

The strap 8 consists of a U-shaped wire I4 and a wire hook I5, and is adapted to form a sling for one end of one of the form cleats f1. It is preferably of seven (7) gauge stock and consists 1 of a pair of side pieces` I6,-and a bottom piece I1 aforesaid cleat end and serve as a result of their grip to hold the strap 8 against sidewise tilting when it is applied to its cleat end. The intermediate parts of the side pieces of the U-shaped wire I4 extend upwardly and inwardly and are connected by bends I8 of approximately 45 to the upper-ends of the lower parts of theside pieces. They are comparatively short and are adapted, after application or connection of the strap 8 to the I-beam I to extend downwards from the adjacent side edge of the top ange of such beam. The upper parts of the side piece I6 extend inwardly at substantially right angles to the lower parts of the side pieces and are connected by bends I9 of approximately 45 to the intermediate parts ofthe side pieces I6. They are adapted to overlie and rest upon the rtop flange i1 of the I-bearn when the strap 8 is in connected relation with the beam and with the exception of the end extremities thereof are straight. The hook I5 faces downwardly and is preferably formed of zero gauge stock. It serves to maintain the upper end of the wire I4 in hooked relation with the I-beam and consists of an elongated straight shank 2l] and a downwardly extending inturned hook part 2l. The shank is adapted to overlie and rest upon the top flange vof the I-beam when the strap 8 is in its operative position and its inner end extends between and is welded to the end extremities of the upper parts of the side pieces I6 of the U-shaped wire I4. The hook part 2I is adapted to extend around the top flange o-f the I-beam, as shown in Figures 4, 5 and 6, and its bend is such that when it it is in its operative position it engages the underface of the top flange of the I-beam. The bent intermediate parts of the side pieces I6 of the wire I4 permit the hook I5 to project over or beyond the adjacent side edge of the top flange of the I-beam prior to attachment of the hook onto such edge of the top ange (see Figure 3). The length of the intermediate parts of the wire is such that the `horizontal distance or space between the bends is slightly greater than the length of the space within the hook part 2| of the hook I5. As a result of this, when the board-formed cleat equipped bottom member `f is raised or hoisted in connection with attachment of the hanger apparatus to the I-beam I the hook I is free'to extend beyond the adjacent side edge of the top flange of the beam and in connection with lowering of the bottom member of the form can be swung or moved beyond the adjacent side edge of the topv ange into proper position for connection to the top ange. When the bottom member of the form is lowered the bent or angled intermediate parts engage the opposite side edge of the top flange of the I-beam and as the result of sliding downwards thereagainst, move or guide. the upper parts of the side pieces of the wire in such direction as to effect hooking of the hook I5 onto the top flange i1. When the cleat equipped bottom member of the form is released for suspension by the hanger apparatus, the bends I8 will either straighten as the result of the load upon the cross-piece II of the U-shaped wire I4 or may be straightened by striking them with a hammer, as shown by dotted lines in Figure 4. When the strap 8 is in its operative position with the form suspended therefrom, the lower and intermediate partsA of the side pieces of the U-shaped wire I4 are straight, as shown in Figure 5J and the upper parts of the side pieces and the shank 20 of the hook rest directly on the top face of the top ange i1 of the I-beam. The combined length of the upper parts of the side pieces I6 and the shank 20, that is, the distance from the bends I9 to the hook part 2I is equal to the width of the top flange and hence when the strap 8 is in place the hook part 2| is in hooked relation with the adjoining side margins of the top flange and the bends I9 extend around the other or opposite side margin of said top flange. After straightening the bends I8, the bends I9 become substantially 50 lation with theside margins of the top flange of beri of the formis lowered and during such right f,angle..bends. and-prevent lateraltdisplacefment Voffthefupper parts of-ithe side pieces lfand the .hook f i 5.

The-strap@ isthe same in design and construction .as the strap; 8 :and is adapted-.to bev applied toethe other'or oppositeend of -the .cleat tofwhich the-,strap 82-is applied. The-upper parts ofithe side pieces of the U-shapedwwire of the strapj-9 and the hook of such strap are adapted, as shown inFigurel, tofextend in side byl side .relation with thetopparts:of-the-side pieces of 4the side pieces-I6 ofthe-strap 8 and the hook l5. They project, however, oppositely to the -.top parts; and hook of the strap 8.v

'Ihe straps-mandi I are thesainein construction. and designz-vasethe. strapsv 8 and =9 and are' adapted to be appliedto oppositeends cfg-another one ofthe cleats. f1 and thefstraps l2 land |3ffareof similar ndesign'rand-,arey adapted to be applied to the ends of another one-ofth'ese cleats, as shown in Figure l.` l

In applying or using the hanger apparatus the hookV equipped; wire formed strapsl'are f first applied to the ends-of the cleats f1 prior to hoisting of the bottom memb-er'f of they form F. In applying thestraps to 'the rendsfof the cleats the lower endsof the U-shaped wiresare merely loopedk or slipped around theprojecting ends of the y'cleats and are-slid inwards until the lower ends of the lower parts of the side pieces of the wires are brought into abutment with the side edges of the bottom member f. When the straps are so applied or 'mounted they are leftin a-position wherein they extend upwardly andeutwardlywith suilicient space between the hooks to permit .of movement of the hooks past theI- beam during hoistingof the cleat equipped bottom member under the beam. After connection ofthe strapsto the` ends of the cleats, the bottom member f of the form is hoisted upwards in any suitable manner until it practically engages the bottom flangeof the I-beanr Whenin such position the straps .are swung inwards in order to put'the upperv parts of the side pieces ofthe -U-shaped wires and the hooks into overlapped relation with the top flange ofthe vI-beam. Aiter such swinging movement thebottom memmovement the hooks at the upper ends of the straps are brought into hooked or connected rethe I-beam I. After this `operation or step ythe bends between. the intermediate and lower parts of the side pieces of the U-shapedwires of the straps arestraightened by lhammering them` in- Pwards.

termediate and upper parts of the side pieces of the U-shaped wires ofthe straps are bent so that they are. substantially right anglev bends (see Figure 5). Atv the conclusion4 of the bend straightening. operation,` the operator by way of a hammer'VA or like4 hammering tool, drivesthe portions of the lower parts of the side pieces of the U-shaped wires which engage or contact with the side edges of the bottomv member f of the Vform vinto such edges so that the latter are straight fromend to end. After proper attachment of the strapstotherI-.beam the. side membersj2 'of the formare -mounted in place by placing them on the projecting endsof theicleats and moving them inwards into abutting relation with `the side edges ofthe bottom member f. After suitably securing the side` members of` the formv in place concrete is poured into the form During the hammering operation thei upper bends, that is, the bends between the in and permittedto setI so as to form the concrete fireprooiing beam B around the I-beam I. ,After settingof the concrete, the side members f2 lof the form F are removed. yThereafter the` operator by Lway of achisel or:like tool severs the lower ends of the straps at the points where the lower parts of the side pieces oftheU-shaped wires project beneath the bottom face .of the fireproong beam B. After such operation,v the cleat equipped bottom memberf of the form'is freed uponthe I-beam and suitably lowered out of contact with the fireproofing beam B In order to prevent side swaying l,of the form F after suspension of the. latter from the beam by the improved hanger and also to assure proper spacing of the bottom member f of the form from the bottom flange f2 of the I-beam pairs yof C-shaped spacers f 22v are provided. These .spacers are suitably `formed for i -bent from wire stock,- preferably #4 gauge, and embody long horizontally extending bottom*v armsl 23, short horizontally extending top varms 24;- and vertically extending-connecting parts z5. The

connectingparts' correspond in length to the dearms 24 'are approximately one-half as .long as the bottom arms and have upwardly extending projections.. which are adapted` when the spacers are turned'at .rightang1es', that is, into atransverse position with respect to the bottom member of the form F, as shown in kFigure 6, to abut against the side edges of thebottom flange of the I-beam I. When the spacers are in their aforesaid transverse position the projections21 prevent side swaying of theforml F and the vertically Aextending connecting yparts 25 show proper spacingv of thebottomvmember of the" form from the bottom flange ofthe Lbeam. The spacers 2`v are adapted prior to hoisting yof the cleat equipped bottom member-of the .for-rn toy be driven into connected relation with said l' bottom member in such manner that they extend yparallel tothe side edges'of said member. After connection of the straps to the top flange of the I-beam .and straightening-the bendsbetween the intermediate and lower parts of `theeside'pieces of the U-shaped wires of the straps the spacers areA turned or rotated inwards by pliers or a like turning tool into their transverse position whereinthey fit between .and engage the bttomiiange of the I-beam. and -the 'top' face of said bottom member f. The right angle bends betweenv the `hnrizontallyextending bottom `arms 23 and .the

,lower ends of the vertically extending-connecting parts 2,5 aresuitably weakened so 4that after removal. of the bottom member of the form upon setting of the reprooiing beam Br such bottom arms may by` striking with a. hammer the prongs f 25 be disconnected from the-lower ends of the parts25 of the spacers.; The lower ends of the prongs are out at an angle, as shown in Figures, so-that they are pointed andI hence maybe `readily driven into the bottom member f of the form priorto .raising or' hoisting of .such member .underthe Ir-beam I. l

If vthe .cleats f1 of theform are formed, ofvisoft wood and there is any likelihood of the bottom or connecting pieces of the U-shaped wires of the straps cutting or digging into the cleats and thus changing the desired spacing of the bottom member of the form with respect to the bottom vflange of the I-beam each U-shaped wire may be provided with a sheet metal saddle 23, as shown in Figure '7. Such saddle is U-shaped for cleat receiving purposes and embodies outwardly extending flanges 29 at the ends thereof. Such anges have apertures 3B on the central portions thereof for receiving the lower parts of the side pieces of the U-shaped wire of the strap with which the saddle is associated and the saddle, as shown in Figure 7, is adapted to be supported on and by the cross or bottom piece of such wire.

The herein described hanger apparatus may be manufactured at a low and reasonable cost for the reason that the straps are alike as far as design or construction is concerned and efficient- .ly and eifectively fullls its intended purpose and may be readily applied. By fixing the combined length of the intermediate and lower parts of the side pieces of the U-shaped wires of the straps the apparatus may be made to support the bottom member of the form to which it is applied any desired distance from the bottom flange of the I-beam.

The invention is not to be undertsood as restricted to the details set forth, since these may be modified within the scope of the appended claims, without departing from the spirit and scope of the invention.

Having thus described the invention, what I claim as new and desire to secure by Letters Patent is:

1. A hanger apparatus for suspending from a horizontal structural element with a top flange a concrete form including a bottom member with a cross cleat secured thereto and having one end projecting therefrom, comprising a strap consisting of a U-shaped wire adapted to extend around and form a sling for the projecting end of the cleat and having the ends thereof bent laterally at substantially right angles and adapted upon raising of said bottom member under the element to be'brought into overlying relation with the flange of the element, and a separate preformed downwardly facing substantially rigid hook having the shank parts thereof connected to the ends of said wire, said Wire having the parts thereof immediately adjacent its ends extending at an acute angle with respect to said ends and adapted to permit the hook part of the hook to project beyond one side edge of the ange when said ends are in overlying relation with the ange and further adapted upon lowering of the strip with the cleat equipped bottom member to engage the other side edge of the ange and move said ends in such direction as to cause said hook part to grip said one side edge of the flange and connect the strap for suspension from the element.

2. A hanger apparatus for suspending from a horizontal structural element with a top flange a concrete form including a bottom member with a cross cleaty secured thereto and having one end projecting therefrom, comprising a strap consisting of a U-shaped wire adapted to extend around and form a sling for the projecting end of the cleat and having the ends thereof bent laterally at substantially right angles and adapted upon raising of said bottom member under the element to be brought into overlying relation with the ange, and a separate preformed downwardly facing substantially rigid' heavy vwire hook yhaving the shank thereof fitting, between and Welded to said ends of the wire, said lwire having the'parts thereof intermediate its ends extending at a substantially angle with respect to said ends and adapted to permit the hook part of the hook to project beyond one side edge of the ange when said ends are in overlying relation with the ange and further adapted upon lowering of the strap with the cleat equipped bottom member to engage and slide upon the other side edge of the flange and move said ends in such direction as to cause the hook part to grip said one side edge of the flange and connect the strap for suspension from the element.

3. A hanger apparatus for suspending from a structural element with a top flange a concrete form including a bottom member with a cross cleat secured thereto and having one end projecting therefrom, comprising a strap consisting of a wire having a loop at one end thereof adapted to extend around and form a sling for the projecting end of the cleat and having its other end provided with a preformed downwardly facing hook and bent at substantially right angles so that it is adapted upon raising of said bottom member under the element to be brought into overlying relation with the flange, said Wire also having an angled intermediate part adjoining said other end and adapted to permit the hook to project beyond one side edge of the ange when said other end is in overlying relation with the flange and further adapted upon lowering of the strap with the cleat equipped bottom member to engage and slide against the other side edge of the ange and move said other end in such direction as to cause the hook to grip said one side edge of the flange and connect said strap for suspension from the element.

4. A hanger apparatus for suspending from a l structural element with a top flange a concrete form including a bottom member with a cross cleat secured thereto and having one end projecting therefrom, comprising a strap consisting of a U-shaped wire adapted to extend around and form a sling for the projecting end of the cleat and having the ends thereof provided with a preformed downwardly extending substantially rigid hook and bent at substantially right angles so that they are adapted upon raising of said bottom member under the element to be brought into overlying relation with the ange, said wire also having the parts thereof immediately adja cent its ends extending at substantially a 45 angle with respect to said ends and adapted tov permit the hook to project beyond one side edgev of the flange when said ends are in overlying relation with the fiange and further adapted upon lowering of the strap with the cleat equipped bottom member to engage and ride on the other side edge of the iiange and move said ends in such direction as to cause the hook to grip said one side edge of the ange and connect the strap for suspension from the element,

5. A hanger apparatus for suspending from a horizontal structural element with a top flange a concrete form including a bottom member with a cross cleat secured thereto and having one end projecting therefrom, comprising a strap consisting of a wire having a loop at one end thereof adapted to extend around and form a sling for the projecting end of the cleat and having its other end bent laterally at substantially right angles and adapted upon raising of said bottom member under the element to be brought into overlying relation with the flange, means connected to said other end of the Wire for holding the strap in suspended relation with the element, and a separately formed U-shaped member applied to the loop and serving to form y said ends of the Wire and adapted to hook around the flange of the element and to hold the Wire a bearing for the cleat.V p

6. Ahanger apparatus for suspending from a horizontal structural element with a top flange a concrete form including a bottom member with a cross cleat secured thereto and having one endl projecting therefrom, comprising a strap consisting of a U-shaped Wire adapted to extend around and form a sling for the projecting end of the cleat andv having the ends thereof bent laterally at substantially right angles and adapted upon raising of said bottom member under the element to be brought into overlying relation with the iiange, a hook connected to in suspended relation with the element, and a U-shaped element connected to the lower portion BROR HILLBERG. i I

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