US856371A - Centering construction. - Google Patents

Description

PATENTED JUNE il, 1907,

G. H". SCAM15/ELL` CBNTERING CONSTRUCTION.

APPLICATION FILED JULY 7, 1906.

A// HE l' AS'O l l concrete() .extending downward along the UNITED STA-Tris ,PATENT oFF-'ren'.

CHARLES ntsCAMMnLL, or NEW YORK, N. Y.,- AssreNoR To THE NEW JERSEY Winn CLOTH COMPANY, or TRENTCN, arrasar, con

PCRATIC'N or NEW JERSEY.

cem-Enma ooNsTRuo-rs'oni.

v,at New York city, County of New York, and

State .of New York, have'in'vented certain new and useful Improvements in Centering Constructions, fully described and represented in the following specification and 'the xo. l n y I.

- This invention relates` to theV constructlon accompanying drawiugsf orming a Ipart of the same;

of 'fireproof floors, ceilings, arches and simib lar structures in which a temporary frame,-

work or centering is used to support the material' of the structure during the lmaking of the same and during the settin of the concrete-or other yplastic materiahi suchplastie materials be used, the obj ect of the invention I being toprovide a simple, cheap and effi-#"1 .cientcentering vconstruction adapted cially vfor making concrete floors with thecon# i 'i crete extending downward from the floor web l so aste cover andfireproof the lowery por` tions ofthe 'b`ea1r1s,and with a reproof ceilinsuspendedbelow the beams. Y I,

j or Aa full Aunderstanding of the invention.

' a detailed description of'a construction of the preferred' form, embodying all the features of thesarne, now be l with the 'accompanying rawing's forming a;

art ,of this specification, and the features orming the inventionl particularly. pointed Y out in the Claims. v

In the drawings :,fFigure 1 is a cross sec;v tion of the beams and centering, ready for ilm 1n the concrete. 2 is a section on the line 2 of Fig. 1 with the concrete filled in suspended ceilin in place.

on the centering, the centering and concrete being partly broken away to show thedconstruction. Fig.- 3 is a cross section similar to Fig. 1 with the .floorl completed before removal of the centering. Fig. 4 is a view similar to Fig. 3, with the centering removed and a Fig. 5 4is a perspective View o one of the centering supporting'clips and hangers.

Referring `to the drawings, A are the common flanged beams and the floor is shown as consisting of the ordinary web of concrete B at Jthe tops ofthe beams, and the bodiesof webs ofthe beams and around and under the bottom flange of the beams, so that"l` the Specification of Letters Patent. Application mei my 7,1908. sgml r9. 32eme,

ven, inconnection gamme .nm-11,1907.'

beams are Covered and protected onftheir lunder sides by a 'substantial layer of concrete. The 'concrete surrounding 'the lower-.flanges of "the beams is sup orted by the clips D placed on the beamu anges at a suitable distance so 'as 'topermit ,the concrete to be worked'under the beam andaround `thecli' in lillingit in. VThese\clipsDare .preferab y of. the form. showin and zconbisti .of marrowmetal .plates` extending under the beams 'and slit at their4 oppositeendsto form-arms -1 by:-

which the clips' are supported .ouille-,beam

,flan es, and 4to provdegpairs ofarms eX-1'l e beams, the arms l2 fb`e ten 'inbelow Q l prefers. ly inclined outward Aand mward'an' ooked as shown, andffthearm 3fb" ex'.

Atelplded downward and formed withfa ook lfadapted- Ato support4 the centering hanger, andfab suspended ceiling iftha .latte:be;used,

described hereafter; .Thesecli 'except' as inaecordance with t resent invention", .are fullyvdeseribed' and claimed I in U'nd Statesletqraflant No,-7s6,289.

The centering is 'supported and formed as follows; Theffarms .3cof adjacent clips sup-' rtfbytheiqhooks the centering angersv which areshown aafxnetal bars arranged ledgewise `lvertical y, for securing the restrengthwrth light material, and havgulred at their ends; two upwardly extending rovided lwith openings 6' to receive 4. The hangers E also' have-their armsl 5 the hoo 4 middle horizontal portions 7 'de ressed,with

higher portions 8 on each-side, t e lower and hierher portions of the hangers E being of sulicient' width@4 toreceive the j,centering j'oists.,` U on'tle higher portions 8 of the hangersrest'the centering joists F, and upon these joists are sup orted the soffit boards G below the beams through which the arms 8, pass and the haunch boards H, these haunch boards being shownas Vertical,4 although it will be understood that they may be' inclined, if desired. These haunch boards are shown as formedbyseparate boards arf ran ed ed ewise one above -the other and hel to et er by nailnr boards 10 over the joints, t e haunch boar s thus b einglbuilt up to the proper'heivht. The haunc boards are.'shown as held rigidly in-position and properlyv Aspaced from` .the beamlwebs braces'l 1, which maybe short pieces of woot?, as shown. j Upon the boards 1 0 are supportings 'ani a brief description. The clips E having been placed in position on the beams and the suffit boards G raised into position on the joists F, the hangers E are hooked on to the ,hooks 4 by the hanger arms 5, and the centering joists F then placed in position on the higher portions 8 o f the hangers, as shown in Figsl to 3. The haunclifboards H are then placed in position on o' posite -sidesof the sott .bards G and the ot er parts of the centering put in place, completing the centering as'shown 1n Fifa 1. The beam pr tec-tioncdncreteC an floor concrete B are then' filled in, to form the floor and beam protectiomffand allowed to set, Thecentering is then removed by` first knocking the'joists F .from the'higher portions 8 to the lowerv portions 7 of the hangers E, which lowers the centering sufiiciently so that all the parts of the centering maybe withdrawn from betweenv the joists F and the floor, and the joists will then be removed by drawing them' f out-of the hangers fand the latterthen rehooks4 and drop the moved, or by raising thehangers'and joists4 sufficiently tounhook the hangers from the j oists with tire hangers.

After the centeri leaving the door. an beam Vprotection-as shown in Fig. 4,"a suspended ceiling may be sup ortedby the arms 3, as shown, the oeil-- ing ars L being placed in and supported by the hooks 4 and the usual ceiling of metallic lathing l2 and plaster M supported by these ceiling bars.

l t will bc understood that the invention is not limited to clips having the arms=2 for* supportingthe beam protection, nor to the particular form of'other details illustrated, ut that the construction shown 'may be va- Wha't is claimed is:

l. 'lhi` combination with 4flanged beams, oli clips engaging the 'bottom flanges of' the beams and having depending arms, metal han ers extending beta-'cen and:supported b y t c depending arms of adjacent clips, and centering supported by said hangers.

2. The combination with flanged beams,

rled widely within the scope of the claims'.

has been removed,

v l l l 1 of clips engaging the bottom flanges on both hookcdnarms, metalliangers extending between and lsupported by the depending arms of adjacent clips, and centering supported by said hangers.

3. The-combination with flanged beams, of clips engaging the bottom flanges of the beams and having depending hooked arms,

'soflit boards through which thc arms extend,- metal hangers extendingbetween and snpported yby the depending arms of adjacent clips, centering joists extendingvtransverscl y ofthe beams and supported'by said hangers,

haunch boards on said" supported by said haunch boards.

4. The combination -with fianged beams,

of clips engaging the' bottom flanges on both Joists, and centering 'sides of the beams and having depending 55 sides of the Vbeams and having arms extend-- ing below the beams for supporting the concrete: beam rotection, de nding 'hooked arms on the c ips extending lowI theline of beampmtectiOn, metal hangers extending between and supported by the depending armsef-adjacent clips, and centering sup-l ported by said hangers. i l i "5. The combination with beams A, of clips D on the bottomflanges having thc depend;

ing h ooked arms 3, and metalcentering .hangers E extending between and supported by the arms 3 of adjacent clips.

6, The combinatioawith beamsA,.ofaclips' D. on the bottom flangeshaving the dependinghooked arms -3, and metal centering hangers E, said hangers E havingthe sus'.- pending arms 5, an upper surfaceor surfaces 8 lfor support of the centering when in use, and a lower surface 7 for lowering the centermg.

7; 'lhe combination with beam A, of clips l) on the bottom flanges having the de nding hooked arms 3, centering hanger Epleiaving the suspending arms 5, and'supporting surfaces 7, 8, at difl'erent elevations, substantially as and for thevpurposes described.

ln testimon whereof, I have hereunto set my hand, in t xe presence of two subscribing witnesses.

f lfVitnesses:

A. Wni'rs, (1. J. SAwYEn.

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