US1757686A - Stair and baluster railing - Google Patents

Description

May. 6, 1930- G. RQSENBAUM A 1,757,686

STAIR AND BALUSTER RAILING Fiied oct. 28. 1929 INVENTOR j," www@ ATTORNEY Patented May 6, 1930 i GAD nosnmaenm; or nnrnorr, monteert s'rnmV AND JBnLUs'rnn inAILING Application `filed October l28, k1929. Seria-1 j No'. 402,853,

My invention relates to an improvement in stair and balu'ster railings 4andfinore particu larlyin a novel construction of the balusterS 'Stringers whereby they are Vadapte-d to interlock to Vform, ya unitary structure that may beassembled either at the shop, or shippedknockdown, to be erected .at the building `Wllilere the :railing is vto be installed.

The primary object 4or the in ventionis tol provide an interlocking construction which upon assembly of .the balusters and stringers ,insures a rigid unitary structurewthout weldingor the ,employment of bolts or other vfastening devices. Y 5 y .Wt-h 'the oregoingfandother objects in View which willappear as the description proceeds, the invention further resides in the combination and arrangement of parts Yand in the details of `const ruction vhereinafterdei .elevation of .a

terwould appear when interlocked Withthel `Stringer upon stairs, also a baluster as its interlocking end portion is about to .enter into.

engagement with the Stringer, vand in dotted lines the position assumed by saidbaluster when interlocked. p

Figure 4 is a fragmentary plan View of a :channel member or Stringer as employed in a horizontal railing, showing an opening in :the ,Stringer to receive Athe interlocking end of a balnster, also the end of a 4baluster. inserted in an acent openingfof the Stringer.

Figure 5 is a vertical longitudinal sectional -viewthrongha yhorizontal Stringer, showing a balusterin interlocking relation, also a baluster about to ente-r into interlocking relation more clearly with the horizontal Stringer, 'and dotted `lines the baluster interl-oe'ked with the fstrlnger. y Y

Fii'gnret is .a cross-sectional lView of la de- `tail .a Lstfnger, taken :on for about fline :'6-6

:O .Figure `5, showing :a Ibalnster interlocked Wththeistringer.

Figure 7 is a modification 'of the interlock 'img Y-cnd of :azstair bia-luster :and its Stringer. Referring now to itlrefiletters :of reference placed nplontlie 'dra-Wings: Y y A, A1 denote the ripper and lower stringere :of a stair 4rail reepeotimely sectmed iin any suitable mannen-eas :tor example ian angle plate iB ,wto a nervel post G, at the toot roti the stairs. y 1

Therweb Aa of the stringere are punched Witlil .a plurality of Eholesl) infequal spaced re ,lationrto receive-'the endsfoi a ,plurality ot ball#- Y .listers IE, -the openings \(LD the stai-r rail stringers h corresponding in :size with =a crosssection of the end of the baluster. The bainslter Eis nsertedin 4the stringer at rig-lit :angles to the under aceof the laftter-asfclearl-y indi cated in Figure Following the insertion oit' the .balnster through .fthe opening in the Stringer, ,tl-1e baluster :is swung into :a vertical positionfshown tall :and `dotted lines.

'Bhe notched portions fon yopposite sidesor fthe -baluster form .shoulders El' overlapping the upper fand un'der .lsfi'des vof fthe 'stringer Wald. The :lower Vend of the balus'ters are Areg rspectivelyfinterloeked'withthelower:Stringer -or channel 'raifl Vin a similar' manner t-o that :just described.. Upon the entry ci the 'interlocking ends oit the sev-eral *balusters in the open-ings provi-ded in the upper and -lower stringers,-the ibaflnsters being at right vangles to theweb of the stringerethe stringers ,are shifted in opposite Vdirections v'in relation to each other, thereby forcing ,the balusters into v a vertical position, and 'interlockingrelation with the .notches E1, overlapping .the upper and lower sides of ,the .Stringer vWalls ,-see Figures i2 andB. To vmaintain the balusters andstr'ingers in .thcirassembled relation that they may not collapse before connection `with the n ewel posts, a pin F may ,be driven through anopening provided 'in one of the i Umm-D As,'ferrS PATENT O-FFffCE;

balusters-see Figure 2-ad3'1acent and'parallel with the web of one of the stringers.

This device holdsfthe structure rigidly in its assembly unitary relation.

Referring now to the horizontal railing shown in Figure 2,-the openings (D1) in the horizontalV stringers are somewhat narrower than their width and correspond in size with the cross-sectional dimension of the baluster at its contracted'neck (Ezh-see Figure 4. The ends of the baluster employed inthe horizontal railing are bevelled that theymay pass through the contracted openingsin the horizontal stringers,-the bevelled portion (E3) extending from the contracted neck` to the end of the baluster, see Figure 5.

It will be noted thatthe vbevelled end of Y the interlocking portions at eachend of the ers, the baluster being turned so that its bevelled end is opposed to the bevelled ends of Vthe other balusters as clearly indicated in Figure 2. This arrangement serves Vto insure 'a l unitary railing and secures it againstr'collapse. v

In Figure 7 a modification of 'thelocking end of the stair baluster is shown. Itwill be noted that the baluster isV notched only on one side. The notched portion however is relatively deeper than previously indicated.

To assemble the parts, the interlocking end portion of the baluster is thrust through an opening of the same cross-sectional dimension as that of the baluster. It is then swung into the position shown in full and dotted lines. The edge of the baluster contacts on one side with the wall Ysurrounding the openingv through the web of the stringer,`-'the shoulder formed by notching the opposite side of the baluster overlapping .the web of theV Stringer. This modification is adpated more particularly for inclined stair railings.

` In this modified construction, two of the notches required in the form shown in Figure 3 have been eliminated, thereby reducing the cost or' manufacture.

Having now, indicated the parts by reference letters, the construction and( operation Y Aof the device will be readily understood without further detailed explanation.

If desired, the railing maybe shipped in knock-down condition, and readily assembled parts ters in relation to the others when interlocky ing it with the stringers;-as previously den scribed.

Having thus I claimis:

l. A baluster and railing structure formed from a pair of stringers and a plurality of described my invention, what balusters detachably'connected and interlocked with one another; the upper and lower stringers having a plurality ofholesspa'ced apart to receive the ends of the balusters when inserted through-said holes at an varbitrary angle to the stringers; said balusters notched adjacent ltheir ends to form shoulders,'adapt ed upon-entering the ends of the balusters through the openingsot` the stringers to overlap the wall surrounding the opening of the stringers and to interlockvr with said stringers upon changing the initial'angleof said-balusters in relation to said stringers.

2. In a structure of the character described, a pair of stringers provided with a plurality of holesl spaced apartkto receive the ends of a plurality otbalusters; a plurality of balusters having ends adapted to cnt erthe holes in said stringers, said balusters being notched v adjacent their ends to Vforni shoulders, adapted-to overlap and interlockwith said stringers upon irstinserting the ends of. the balusters through the holes of the strlnge'rs at a suitable angle, then shifting the angleV of the balusters to a vertical position from the floor, whereby the shoulders of the balusters 1 mayoverlap, the stringers and means for securing the assembled balusters and stringers together as a unitary structure. `y

3. A structureas specified in claiml l, in combinaation with aY pinextending transversely through one of saidbalusters, adjai cent one of the stringers, 1whereby the as'- sembled balusters and stringers maybe secured together as a unitary structure.

4l.v A baluster and a railing structure formed Vfrom a pair of stringers anda plurality of balusters detachably connected and interlocked with one another; the upper and lower stringers-having a plurality of holes spaced apart to receive the ends of the balusters; said balusters notchedv at'each end on 'each side of the baluster to overlap the walls 'of the Stringer, with one side at each end loi' the baluster formed on an angle extending v from one of the notches to the ends ot the baluster, a cross-section of theendsV of the baluster being relatively narrower than their width, whereby they may enter at an arbitraryv angle through correspondingly shaped holes in the stringers to overlap the wall surrounding the holes in the latter upon ehanging the initial angle of the kloalusters in relaf tion to said Stringer to effect an interlocking relation; and means for securing the stringers and balusters as a unitary structure When interlocked.

In testimony whereof, Isign this specifica,-

ton.

GAD ROSENBAUM.

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