US1666222A

US1666222A - Assigstok

Info

Publication number: US1666222A
Authority: US
Publication date: 1928-04-17
Anticipated expiration: 1945-04-17

Description

Apr i117, 192s. 1,666,222

6 6 A. L. SMITH STAIR LANDING CONSTRUCTION Filed July 9. 1926 Q ribs and the like which serve to greatly stiff? Patented Apr. 17, .1928.

l canes am ss" iatazzz [if f m was ARTE-UB1 1;. SMITH, OF1VIELROSE, MAssAcH sETTs, nssiGNoR T0 THEA. L. SMITH 1301s.,

'; worms, or onntsnamnssnonusnrrs, a CORPORATION or MAssAc us T'rs.

v s'rAIn-LANDI NG coNsrnUcErioN.

' "Application filed July 9,1926. Serial No. 121,354.

} This invention relates to structural supports and more especially to 'such as are adapted for use in stair landings and the like. Inmaking various building constructions it is now common-practice to employ sheet lwhere wood has formerly been employed,

sheets of this sort are generally possessed" "of. a "considerably higher tensile strength than wood, they may be less resista'ntfto bending and shearing for the reason that when using metals the tendency in the building art isv to employ'single elements: which are considerably thinner and of lesser dimensions generally than corresponding 'parts""when made of-wood,' and hence this reduces the-eifective bending or shearing strengthlof a given element, especially in a localized or concentrated. Accordingly, to oflFset this-eflect sheet metal parts are comr monly' corrugated, folded or provided with eh'Z-an'd strengthen the element either as a whole or in those sections where' the stresses and strains to be encountered are especially great." r

It is an objector the present invention'to provide structural support more especially adaptedto engage and. retain such ribbed sheetsof metal such as a stair platform,- I -firmly and securelyin position, and alsoto" distribute the stresses and strains to' which it may be subjected in the course of use, v ,The invention includes generally the provision of a support having one member (consisting of one or several spaced flange elements) which serves for attachment to the structure with which the support'is to be inv corporated and a second member, preferably flatandsingularlydisposed with respect to the flange or flanges of the, first member and attached thereto preferably along a common edge, the second member having in the a spaces between'the'flanges of the first'member,fa'fsuitably fashioned stirrup, element for strengthening the support and also for receiving "theribs of the platform or other structural elementito, be supported thereby. Such supports are especially adapted to receive and "support "platform constructions,

V 1 drawings, in which:

' metal (or metal sheets) in many'places areas where such stresses and strains are horizontal, flat bottom 15.

stairway treads, etc, which are made from [corrugated sheet metal or the like. ,Acco'rdingly, vthe invention will'be described in this aspect of its'application in actual practice reference being made to the accompanying Fig, 1 is a verticalcross section andview ofa platform-resting upon thesupport;

Fig; 2 is a-persp'ect'ive viewfwith parts broken away, of the support alone; r i Fig. 3 is a vertical cross-section of a modified form of platform andsupport; and

Figs; 4 and 5 are side views of a further modification of the support: 7 j" Referring to the drawings (Fig; 1 *the support 1 isaflixed'to. the adjacent wall or beams2 and the platform-3 is placed loosely I on the support or-may-be additionally fixed in position thereon.

consisting of'spa'ced flanges 5, 5, 5", whichlie in the same plane but are spaced apart; Openings 6 therethrough; receive -nuts or bolts 7 by [which the support -may be .at-

The support lin'cludesv'ertical member 4 i tachad-td the general structure of the build-. 3 mg in wh ch it is to be installed (asshown' in Fig. '1'). iThe' supportalsoh'as an upper or horizontal member 8,wliich is continuous and whose longitudinal edge is joined to; or made integral with the upper edge 'of the vertical meniberalong 1 the common line of contact 9, and which presentsa generally v flat, horizontal, upper bearing surface 11';- The horizontal member '8, in theportions spanning thegaps 1-2, 12 betweenthe spaced flanges 5, 5, 5"are bent to form stirrups 13 having substantially vertical sides 14; and a The platform 3 comprisesa substantially flat sheet ofmeta'l 16', having transverse ribs- 17- on the under side,which maybefashioned thereon, as by, foldingyb'ending or the l ke, andwhich may open upwardly as in Fig.1, and a body portion of cement or other "appropriatematerial l8' formed upon the upper surface and filling the channels inthe-uppe-r'side'oftherib's 17.

'lhe supports may be made, by making an-' gle-b'ar of suitable characteristics and di-" mensions and then'removing the portiona" of the member icorresponding to the gap 12, '12 leaving the separated flanges 5,15

gap, thus forming a U-shaped stirrup 13,.

as will be clearfrom the drawings.

The members t and 8 are, then bored to provide holes for receiving bolts and the supports are fixed in place by any convenient means. The platform 3, of which the trans verse ribs are preferably adapted to fit and form a close engagement with the stirrup elements, is then placed so that its margin rests upon the horizontal bearing surface 11 intermediate the ribs 17, while the ribs 17 closely fit into and engage the stirrups 13. Due to the close engagement thus effected, it will not be necessary to attach the platform to the support, although in permanent constructions, bolts or screws 19 may be passed through the platform and the horizontal member 8. The bolts may be covered by cement or other material or not, as desired.

The modified form of the support shown in Fig. 3 is providedwith stirrups l3 adapted; to receive ribs 17 of the platform where the sides of the ribs have been pressed to gether into contact with each other and hence form a narrow, somewhat V-shaped cross section.

Still further modifications are shown in Figs. a and 5, inthe first of which the stirrupforms an almost completely closed circle in cross section, and in the; latter of which the stirrup projects upwardly, to engage an upwardly disposed rib in the platform.

As thus assembled the platform may be permanent or readily removable but in either event it is securely supported and retained in position. In addition to the utilitarian feature of security thus-accomplished, theconstruction is characterized by occupy ing but little space both upon the adjacent wall and in the space directly beneath the platform. This effects a substantial economy of space and also avoids ugly projections which from an architectural standpoint present serious difliculties to be overcome. Moreover, the strains impressed upon the platforms are resisted by the ribs and transmitted therethrough to the stirrup members of the support, which on account of their-close fitting engagement with the ribs and their own reinforced arrangement are capable of receiving and in turn transmitting themto the vertical or wall member, both downwardly and laterally against the wall.

It will be readily apparent that other applications and adaptations of the invention may be made, but such applications and modifications are to be understood as comprehended by and included within the terms of the present specification and claims.

I claim:

1. A structural support, comprising a continuous member having a stirrup element therein and another member in a plane at an angle to the first member and joined thereto along a common edge.

2. A structural support, comprising a coninuous member,a portion thereof forming a stirrup element, and another member disposed in a plane forming a right angle with the first member and attached thereto along a common longitudinal edge.

A structural support, comprising a continuous member, a portion thereof intermediate the ends forming a stirrup element, and another member consisting of a plurality of flanges disposed in a plane at an angle to the first member and attached thereto along a common longitudinal edge.

4. A structural support, comprising a continuous member, a portion thereof intermediate the ends forming a stirrup element, and, another member consisting of a plurality of flanges disposed in a plane ata right; angle to the first member and attached thereto along a common longitudinal edge.

5. A structural support, comprising two substantially flat members, integrally joined, along a common line of contact and at right. angle to each other, one of said members comprisinga plurality of flange elements,

spaced apart with respect to said line of contact, and the other of said members having s'tirrups therein intermediate said flange ele ments.

6. A structural support, comprising two substantially'fiat members, integrally. joined along a common line of contact. and at right angles to each other, one of said members comprisin a plurality of flange elements,

spaced apart with respect to said line of con.

tact, and the other of. said members having stirrups therein intermediate said flange elements, said stirrupsbutting against the adjacent ends of said flange elements.

7. A structural support comprising an angle bar having two angularly disposed members, transverse portions of one of said members being removed therefrom at spaced intervals and stirrup elements formed inthe other of said members in those portions, thereof corresponding to the removed portions of the first. l

8. A platform construction,comprising'a support, said support consisting of, a continuous member, a portion thereof forming a stirrup element, and a second member joined to and disposed at right angles to the first member, means for fastening said second member to adjacent wall structure anda platform having a rib in the under surface 7 thereof, the ,margin' ofsaid platform and support, said support consisting of a con- I end of said rib resting upon said horizontal member and in said stirrup element respeotively. i p i 9. A platform construction, comprising a tinuous member, portions thereof forming stirrup elements suitably spaced apart and a second member consisting of a plurality of flanges joined to and disposed at right an:

I gles to the first member intermediate said thereof, the longitudinal margin of said plat I formresting upon the second member of the support and the end portions of the ribs fit- I stirrup elements, means for fastening said second members to adjacent Wall structure and a platform having a plurality of transverse ribs spaced apart in the under surface i ii t and ngaging the stirrup elements of thesupport. 1 I

10. A platform construction, comprising a support, said support consisting of a plural ity of spaced,'vertical flanges lying in sub stantially the same plane and means for fastening said flanges tothe adjacent structure, I

and a continuous horizontal member joined to said flanges along a common edge and having stirrup elements in the spaces intermediate saidflanges', andia platform having asheet metal base provided With trans'-" verse ribs, vspaced apart at intervals to corre spond to said stirrup elem ents,said rlbs ,-ARTHUR L. SMITH.