US1789574A - Stairway-platform construction - Google Patents

Description

Jan. 20, lgg. A, WQODBRHDGE 1,789Q574 STAIRWAY PLTFORM CONSTRUCTION -Filed March 1v, 192e 2 sheets-sheet 1 im @WwW/' y Jan. 20, 1931. A..|.L wooDBRlDGE 1,789,574A

s'rAIRwAY PLATFORM coNsTRUcTIoN Filed urch 17, 192s 2 sums-sheet 2 Patentedfjan. l Y,

. form or landing between twoights 'or runs of "stairs and the structure.:directlyassociated -there'withythe principal.v object thereofi-being to 'providea maximum strength inf? Ausual beams l en iployed vinfbuilding .construcf "tions-v .In the Presenti.lconstutiom .the 4i the aforementioned .construction 3 generally and to minimizethecost .of the material and theamount' of laborf required and to install thesame; VInthe present constructiomthe ioor vplates of the lplatform vare of'a unitaryconstruction and the reinforcingportionsjtherefor form an'integral partlof thesplates, extends Y t ing above the bottom surface thereof..gAside 20 from the savingof 'labor and materials and vthe strengthening of the aconstruction; this arrangement provides'a 'finished andv pleasf ings:V 35- ing appearance when v-viewed from i the underneathside-of the platform?i,and.-elimiv nates the unsightly appearance of. reinforcI ing Ts angle'-ironconnecting"members,A and thev like of the 'usuali constructions.

Other objects and advantageswill here-Y inafter' be referred. to "and ZV-for' a :better .un-'

derstanding of th'e l nature, characteristics and 'scope of this 1nvent1on,;referencemay be hadfto'thefaccompanying drawings and Vvthe following description, `in which? drawf Figure ofa portion of Fig, 2]taken'zonthe-line the line 1 -4 lgof' Fig.l of? an intermediate. Vportion of the'jplatformgp Fig. 5 is a vertical'sectional .view taken gto' .fabricate is atop plan viewofthe construetionembodied in this'finvention; Vbefore the l Referring nowto he drawings ,;.an inter' Stringer fl0=haS011e .end .extending berend. I Y the confines Lof the rectangular platform Vand is-embeddedinthewall; Thefotherfen'dof f the l-stringer' 1 0 f vsuitably secured tthev stringer 1yr 11 which llatter extends beyond fthe vconfines of the platform .and-is supportedfin .awall bearin .--i.f,'I-he s tringer12issecured'to/ theface of; A

angle .bracket or -.0thersuitable means, this V t e stringer- 10by means of an Stringer,v togethenwith Stringer 11, being `and .16, respectively., Allof thestringers I Stairv @11.51. fhelobyfa .beam 1.7 .achannel they beam-beingin t by', andfbetweenifhefStringer al'lfflfglelbracket 18 being boitedf aehstringer' andt'o the beam f1.7;l u

An Iangle ironmember*19;/extend larlf'yv notedthat thesef angle:v liron members ypreferablyarc-welded to .stair stringers?..1'5f..`

4thus far.describedare'preferablyformedof' .f 1

heavy'. steel platesfpressedinto thezishapeof 1 :.channels-although itis apparent: thatthe;

v.ordinary structural steel, channelsgmay;4 be f employed.- Theplatforniisjcarriediat.theV ,if .80.

v'85. -.v v'and-'ils secured to 'thefaceof'the string r 10, i the stringere 111.and12having" 'similar angle t iron members 2O 'and 21'sec'ured thereto` and extending '.thereacross. It' *will be 1 particu 'arelinvertedfgwith' reference to the "usual eon- "struction, Ythe vertical. flange being! :pointed upwardlyV instead A. f .dow'inwardly:'. plu? i ralityof fioorplates .Q2-'are disposed between Y the.'stringere.and;restupenlthehorizontallyy ,3l-f7 .-.ext'endingportions oflthe' .angle-iron3mem4- -bers 1519,` 20 and 21.;t vThesei-,flfjor` plates comf' -ii `prise :metal 'sheetsrhaving their. inner. .edges` f f- 23 bent f upwardly .at `Subs tantiallyiright an` gles g-to the planes; of their surfaces]y The K edges 23 ofadjacentfloor plates aresuitably secured together kas by lmeans of nuts and which is costlytandunsiglrtly. i

`reinforcing portions an .anddoing away with angle iron bars, strmgbolts'24 thereby providin integrallyformed supports therefor and holds the floor plates yin a positive -relay tion withv the platform.` Y.

' The inside stair stringer 25, shown more- A rticularly in Figs; and 6of the drawings, isv suitably-fastenedto a newell post 26, which latter is, in turn, suitably secured tothe beam V17. Angle iron struts 27 are 'secured to the stringers and 25 and carry a one-piece l step andfri'ser 28, thestep beingseeured to theriser next' below by meansef bolts or rivets.' AV plate 29V is secured; between the Y the recessed portions'provi edfby the l{leeran e 24";and1the beam' 17 andextendsout war Ilyto be connected to the riser portion of the Vmember 28 vthe upper end of the riser beingfformed into a noseand extending npwardly fromthe connection. an'ysuitable composition-ma A*be disposed in plates 22 to the height lof thejnose portion ofthe riser 28. i Each of the steps is similarly y r prisingl a rectangular metal framework, supflled'with a'conerete or ya compositio'nito the `height 3* of the-nose portion, which latter is 'i formed on each of the stairs inf a manner similarfto that as vdescribed with reference totheplatform. fp

Asa-result of this construction, a substantially'atsurface i'sobtained "on the-underneath side fof the platfom and there `tire no depending'portions extending from ytiri/aft sur- 'i face. 'I This'structure 'affords a finished and K pleasing appearance.l The Hoor plates ofthe platform are! effectively reinforced by means of the upwardly extending conneetingedges whereby 'a 'jiinitary Construction 10btained land theiizaricnis tees andanglejiron Strutsy or supportsfof Vprior construction are eliminated;` Also the tread when in place reinforces, strengthens, and supports theY connection formed-A by fthe uptarned langesor edges Qftheplates which eretti-11s embedded in the `illing`-1 f1aterial. ef-

' feet is enhanced'whe'n the filling material is adhesive incharacter. t While but` asingle embodiment off thiszinvention is herein 'shown anddescribed, it

jjto' be understood that vvarious modicatinns tlzle'reofmayf apparent to lthose skilled in Vthe artwithout departing from Vthe spirit and scope-fof this invention ,and therefore upwardl and Ling.

Vprisiug l metallframework, a flooring for Concrete e or ing members secured tosaid framework for supporting'said plates,"'said members extend- `{ward} from the plane of said plates. plat oriii Mfor metal vstairways comsupporting a illingof concrete or the like ,cinnprisingaflplufr'alityf of` plates vharing .upwardly extending Hanges secured .together and VVembedded in concrete, angle iron supportsv 'securedv to Suid' framework, said plates resting on thehorizontal portion of said 'angle-'irn' supports, the Vertical portion' of said supports extending in a plane above said plates.

' '3. A platform for metal stairways .com-

lprising a -metalframewh a yflooring ,for

supporting a filling of concrete,y or the, like v comprising a.- pluralityV of, interconnected plates embedded insaid concrete, yone end of saidl iiooring havingv :Lilian-,ged portion inte-v grally Vformed therewith `directly secured to 4p liuality 'of plates having up- .Y Y i one. member of said framework, and supporting members/secured to the ren-mining menibers of seid frameworky for supporting lsaid 4e. Arplatform'fory metalistairways com.-

ing" members disposed on three .members I of said metal framework, a'floofring comprisi- -ingfsheet metil members vresting on said supmembexs, ksaid yflooring having'l a formed integrally therewith directly secured tuy they member of said n frameworks/ -V Y 5. A platformfor metalyfstairways comprising a franie'workf ofmetal stringers, a

' flooringfor supporting a filling of concrete or tlnszililml comprising a plurality of plates hafvng'inpmrdly formed-'projections thereon vfor'interconnecting said plates, one edge, of

saidzplntes being bent upwardly andjoutwardlyI to i fol-'m a. continuous jliange, said Vflange restingon and being secured to one Stringer lof said framework, and supporting membersrseeured to the, remaining stringers of said framework for supportilig"saidfloor ing, said supip'olrtingV members extending up- Wardy from the plane lof'said plates. f

6; n an. intermediate platformconstruction for metal 'Stairways the combination with ports for the edges ff-Sarabia@ hongrie frame, said angle bars rhaving their vertical flanges of said vangle hars.

liangesextending upwardly and secured to the inside of the frame members, said plates resting onl the upper sidevo'f the'horizontalf 7. In an intermediate platformrfconstrucf tion :forV metal stairvoways,- the combination.

with a rectangular metal frame, of a re- 10l cessed flooring in said .frame comprising-ai1 'plurality of metal plates extending there.-v

across, said plateshaving-vthein edges adjaji cent to One side of the framebentfupwardly and outwardly over 'one side member ofthe frame, said plates also'having their-adj acentl edges. bent upwardlyto form ilanges,said o l flangessecured together, thelother edges of the plates being supported by angle bars 'secured to the other frame member with-their vertical flanges extending upwardly and the plates resting on 'top' of their horizontal y *Y flanges. f

' ering the entire area of the platform defined yby said beams and providing vtherewith a lform for the vconcrete,js`aid sheets having upf, wardly turned kintegral flanges extending cross wise between saidgwall -and'front Vside o metalsheets supportedon said fmeans and i can Y 8. A reenforcedr` concrete st`air' fplatfor'1n comprising twofwall-supported endbeams;

awall-supportedvside beam;-.a front side,v

beam, extending between said end-beams and spaced outwardly from said wall side beam ;l

shouldered-supporting elements on a plum rality of said beams; la `plurality of separate l formed sheets seatedupon said shouldered;v

elements, said sheetsbeingabutted and covscribed my name.l Y o f v l l Y 1 1 V.A VL.wooDBR ,IDGE.i Y l regadera,

integrallyvf formed flanges,-l saidfflanges-extending bevi v f tween said wall and fourth channels and rconf` i stituting crossebeams; `v and al layer of; con-151.7 i

creteon saidsheets'a'ndl in which fsaid flanges r i i are imbedded. Y

f '11.r A reenforc'ed k concret-e struc-fr ,Y ture including: three wall-supportedxbeams,a

one along one-side and two at'the endsjof the platform; affour'th vbeam supported'hatits endsby'said end beams andspaced from said .side beam; ledge supporting elements Aex-V j tending continuously Valong thevinner' 'faces` sheetslhaving integrally'formed upstandin'g'-` 'Y flanged edges extendingini a direction be tweenifsaid sidebeams;`anda 'layer of-conf; Y crete overlying all ofsaid sheets and of y'a1-TF i' depth lgreater than said flanges, the-bottom/.-1

Vsidesof vsaid sheets presenting an unbroken f fiat surfaceon the underside of the platform."l have hereunto sub-Vv In witness whereof,I

een:

beams; and a layer of concrete on said sheets n and in which said flanges are imbedded. i

9.- A1 reenforcedconcrete stair f platform comprising wall-supportedend beams and a y f wall-supported side beam; a front side beam, supported at its ends by said end beams and spaced from said wall side beam; ledge vsupi porting ,meansl carried by aplur'ality of said beams ontheirinner faces; a plurality of` secured theretoand arranged in a'series from y i one y endbeam to the lotherend beam, sai'dQ--fv sheets having flanges along their adjacent edges extending between ysaid lside beams; land a layer of concretecnsaid sheets. Y

' 10. In astair platform, theV combination with two end and Yone side wall-supportedl Channel@ Corresponding 't0 three sides ofthe' Platform of a fourth channel suppgrted at l n its ends by said endchamlels and spaced ou n o' o wardly from saidfrst-named side channel; i

angle ironsV extending along and secured to the inner faces of. a plurality-of said chan-KV nels below the top edges thereofv and in la common plane;` a series of independent metal f sheets supported upon said angle irons and secured thereto around their edges, said sheets covering the entire areaV defined by the channels, said sheets, alongeoadjacent edges,

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