US2406078A

US2406078A - Scaffold bracket

Info

Publication number: US2406078A
Application number: US589600A
Authority: US
Inventors: Clarence W Hushower
Original assignee: Individual
Current assignee: Individual
Priority date: 1945-04-21
Filing date: 1945-04-21
Publication date: 1946-08-20
Anticipated expiration: 1963-08-20

Description

Aug- 20; 1946 c. HUsHowER 2,406,078 y SCAFFOLD BRACKET I Filed April 2l, 1945 V 15.5' www fg/7552i??? BY maf/M Patented Aug. 20? 1946 UNITEDV fs'rn'rs PATENT OFFICE "mv"iz,40s,o7s .A scAFFoLD BRACKET z., f clarence W. nushdwer, south nena, Ina.

` V Application April 21, 1945, Serial No. 589,600

This invention relates to improvements in scaf fold brackets.

The primary object of the invention is to pro- Vide a scaffold bracket which can be used to support va horizontal platform-supporting member of a scaffold at any selected elevation upon a post of a scaffold of either the single poleror double pole type.

A further object is to provide a simple, light weight and inexpensive bracket which serves to releasably connect supported and supporting scaffold members together by a firm frictional clamping action. p

A further object is to provide a scaffold bracket with a guide for controlling movement of the end of a horizontal scaffold member with respect to a vertical membern which it abuts, in such manner that the fractional ybinding engagement between the parts increases as the load upon the horizontal member increases.

' A further object is to provide a scaffold bracket adapted to embrace a Vertical supporting scaffold part and having an inclined guide engaged by a horizontal supported scaffold part abutting 'said supporting part, whereby said supported part is i wedged by the cooperating factors of abutting .engagement of the supported and supporting parts and the guided engagement of said supported part and said bracket.

Other objects will be apparent from the de-f scription, drawing and appended claims.

In the drawing: Fig. 1 is a fragmentary side view of a double pole scaffold, illustrating the use of my new scaffold bracket.

Fig. 2 is a fragmentary side view of a single pole scaffold, illustrating the use of my-new bracket therein.

Fig. 3 is a horizontal sectional view taken o line 3-3 of Fig. 2.

Fig. 4 is a horizontal sectional view taken on line 4 4 of Fig. 2.

Fig. 5 is a vertical sectional view taken on line 5-5 of Fig. 2.

Referring to the drawing, which illustrates the bers l2 upon which a working platform I4 is supu 11 claims. (creol- 32) ported. It will be understood that such double pole scaffolds may be connected to and braced `from the building wall, but such connections are not relied upon .to support the loadswhich the Ascaffold bears. In the instant construction, the horizontal platform-supporting members I2 are of a length equal to' the spacing of the posts in different rows. A horizontal bolt f6 passes through each end portion of each member l2 in spaced relation to the end edge thereof, and a wing nut I8 is threaded on said bolt. Y

A bracket 20 serves to connect each end portion of member' l2 to the adjacent post l0. Each bracket comprises a pair of flat C-shaped` plates `each having a wide vertical central web portion 22 and parallel horizontal arms 24. Theterminal portions 26 of the arms 24 are of increased thickness to provide inwardly facing vertical shoulders r28 adapted to bear against the Vouter ,vertical surfaceof post `Il! at vertically spaced points. Thethickened terminal arm portions 26 are apertured to receive a bolt 3l! passing therethrough and mounting a thumb nut 32. The shoulders 28 formed by the-thickened terminal portions 26 are of a width slightly less than onehalf the width or thickness of post l l] so that the thickened portions are spaced apart as best Vshown in Fig. 3. z Nut 32 is preferably adjusted to permit `the clamp parts to lie flat against opposite sides of post l0 without play'but with a sliding engagement. The web portion 22 of each bracket plate has an elongated. slot 34 thereinV which is inclined slightly from the vertical, asillustrated.

In use, the brackets 20 are fitted upon the posts lli, and the nuts 32 are adjusted to;4 permit a snug sliding fit of the bracket plates upon the posts. The bolts I6 at the opposite ends of horizontal scaffold members l2r are passed through ythe slots 34 of the bracket webs and through member I2. Nuts I6 are. then adjusted for; a snug but sliding fit. Thev horizontal scaffold member |2 may then be adjusted at any selected elevation, .care being taken to so'positionitwith respect to the bracket that its end edges are in firm abutment with the Vposts l0 as shown in Fig. 3; This binds vthe parts together firmly in frictional clamping engagement; As weight.` is applied to member I2 thereafter, any downward sliding of member l2 relative to the posts Illand bracket 20 serves merelyto increase. ortighten the frictional clamping engagent of clamp 20 and member l2 upon the post l0, by reason ofthe inclination of slot 34 which acts to bind the parts more,r firmly. When the levelAofmember l2 is to be changed, the parts are disengaged by I6 are located at the lower parts of the slots 'toVr again effect a Vclamping action between the ends of member I2 and the shoulders 28 of thebracket 1 with respect to the post. Y Y Y Y The two-part construction ofY the brackets 2li" is desirable but not essential; Thus, inthe-posts 'i j cured in position. This obviously facilitates and simplies handling, inasmuch as bracket 20 does I not require the use of securing means but only relative manipulation of' parts to take advantage of its self-binding or wedged gripping action.

`I claim:

1. A scalold bracket for securing `a horizontal scaifold memberto a'post, comprising a pair offlat C-shaped plates adapted to bear against opposite yside faces of a post, said plates having -thickened .terminal portions providing vertically aligned shoulders engaging the outer faceof said post. and a vertical central web slotted in spaced should not be of uniform dimensions through- ,Y

out their length, or if ,they should swell due to` weather conditions so that the brackets do not slide freely thereon, a vslight loosening of the nuts 32. is all that is required to remedy thedifculty.. In other words', adjustment isprovided ance is provided. without necessitating eircess play or oversize dimensions. Another advantage of the two-piece clamp constru'ction shown L is that the clamp can-be used` with posts of different thicknesses sirnply by adjusting the connecting bolt and nut properly. It will be. understood, however, that IA contemplate the integral onepiece construction ofi the clamps as. being within the purview of the invention,

The invention is'al'so applicableto conventional single, pole scaffolds,V as illustrated in Figs. 2, 4 and 5, 'where' the horizontal members AI2 constitute putlogs supported vat their inner. endsby a building wall 46 and at their outer ends. by posts Ill. In this typeof 'scaiold a bracket. 20 is utilized' inthe manner Vdescribed above to'support 'only the outerend` of putlog 20'. `The opposite end of the pu-tlo'g isV secured to a iitting 42. The iitting 42 preferably comprises a flat base plate-44 of substantial area andk a centrallso'cketV It` projecting fromene face Ao'f said plate'. to snugly receivefthe end. of member I2. A bolt 43 passeslthrough' openings in the opposite. walls. of

socket YIl and through the member I2, and f mounts a ythumb nut 50. A plurality of openings 'are formedin plate 4d to receive securing mem- 'bersi 50 whichv lodge in the. wallk 40` to support. the fitting. Membersw 5U have been illustrated here- -in-as screws, but nails 52asshown in Fig. 2,.'may

also. be used.. Double-headedn-ails. 52' well known inthe art, whereirijtheY inner` head 54 limits the extent -to which the nail may be drivenand. the

' 'tomeetfdifferent conditions soV that sliding clear.-

relation to the inner face of said post andinclined downwardly and outwardly relative' tothe plane 'of saidA shoulders, means securing said terminal portions together, and securing means carried byV said horizontal member and slidable in said inclined slots to guide Vsaid horizontal mem-1 vrber intoV rni endabutment with said vpost upon 'downward movement of said member relative to said post. and bracket.

22 A scalTold bracketfor securing Va horizontal scaiold member' to a post, comprising a pair of Vplates adapted toi bear slidably against opposite side facesofsaicl post and having a projection at one side edge providing a Vertical shoulder adapted. tcl-bear against the outer face of saidv pest, meansV for connecting said plates adjacent said shoulders, each plate having an elongated slot therein inclined slightly relative to said Vshoulders and spaced from the inner face ofy said post,

and amember carried by and projecting from said horizontal member and slidably received in said slots. `r .Y

" 31 A scaffold bracket for securing a horizontal fscaiold member to a post, comprisingV a twopart Vbody adapted to embrace vandfslldably en; gage three faces of said post,v .means securing Vsaldi bodyY parts together adjacent one of said engaged faces, said horizontal member being arranged iniend abutment with the fourth side of outer-head. 56, is spaced from the inner rhead suf.'-

cientlyto afford a convenient portion .which canbe engaged by hammer claws. to pull theV V`Ybracket 20' is. capable' of supporting-.the member tzfif said member'is'not loaded, during the time the tting 42i's being secured in place or during the tieit is beingV released preparatory to Yshif'ti'ngfthemember.I2; vIn other words, thev 're- Yl'easable-bracket' 20l Vcaribe set' as desired and Twin siiiaprtgthe horizntai gements @tieneimi-,i1 `thespplemntal supports are anchoredA or'sesaid post parallel opposed portions of said body engaging opposite sides vof said'liorizontal membe'randeach having an elongated slot therein incline'd downwardly toward .said post at-a small angle, and afbolt extending through said horizontal member and seated slidably in said" slots. 4. A scaioldbracket for secnringa horizontal scaffold. member to a post, comprising two-part body of generally U-shaped cross? section, adapted to slidably embrace .a post withfits opposite ends projecting laterally from oneside of said vpost to engage opposite sides of said horizontal member,

said. .projecting ends each having an elongated inclined slot, means projecting outwardly fromv said horizontal member and slidable in said slots, and' means connecting said bracket parts together. U

` 5'. A scaffold bracket for securing a horizontal scaffold member to a post, comprising a member U-shaped in horizontal cross section. and adapted to slidably embrace a post, the opposite sides of said member being wider than. said post. and each having an elongated inclined sloti therein. spaced `from. said post', and means carried .by said. horizontaly member and received in said slots toi draw said horizontal member into iirm end abutment with said'post upondownward movement thereofV relative'to said post andbracket.

6. In a scai'ol'd, a vertical post," a'horizontal scaffold; member, av U-shaped g scaiold-"bra'cket -slidably ,embracing said post andhaving substanf 'tially parallel vertical parts projecting atfoppcsite van",

sides of said horizontal scaffold member, said projecting parts each having an elongated slot spaced from and inclined downwardly toward said post, and means connecting said horizontal member to said bracket and slidable in said slots to urge the end of said horizontal member into firm frictional engagement with said post upon movement thereof downwardly relative to said post and bracket.

'7. In a scaffold, a vertical post, a horizontal scaffold member, a bracket slidably embracing said, post and having substantially parallel vertical portions engaging opposite sides of and projecting laterally from said horizontal member, each of said projecting portions having an inclined slot, and a bolt extending through said horizontal member and slidable in said slots, said bolt and slots serving to draw the horizontal member and bracket into clamping engagement with said post with a force proportional to the load on said horizontal member.

8. In a scaffold, a vertical post, a horizontal scaffold member, a bracket slidably embracing said post and having substantially parallel vertical portions engaging opposite sides of and projecting laterally lfrom said horizontal member, each of said projecting portions having an inclined slot, and a bolt extending through said horizontal member and slidable in said slots, said bolt and slots serving to draw Athe horizontal member and bracket into clamping engagement with said post with a force proportional to the load on said horizontal member, said bracket being formed of two complementary parts of substantially L-shape in horizontal section and con nected together at their outer ends. Y

9. In a scaffold adapted to be erected adjacent to a building wall, a vertical post spaced from said wall, a horizontal platform support in end engagement with said post, a fitting carried by the opposite end of said platform support and adapted to be secured to said wall, and a bracket slidably embracing said post and projecting at opposite sides of said platformsupport, said bracket having complementary elongated slightly inclined slots spaced from said post, and a bolt carried by said platform support and slidable in said slots to urge said platform support and bracket into binding frictional clamping engagement with said post.

10. In a scaffold adapted to be erected adjacent to a building wall, a vertical post spaced from said wall, a horizontal platform support in end engagement with said post, a fitting carried by the opposite end of said platform support andv adapted to be secured to said wall, and a bracket slidably embracing said post and projecting at opposite sides of said platform support, said bracket having complementary elongated slightly inclined slots spaced from said post, and a bolt carried by `said platform support and slidable in said slots to urge said platform support and bracket into binding frictional clamping engagement with said post, said fitting including a plate bearing against said wall and a socket receiving said platform support.

11. A scaffold bracket for releasably mounting a horizontal member slidably upon a post, comprising a rigidsubstantially U-shaped memberv embracing said post with its ends projecting laterally from said post and provided with complementary elongated slightly inclinedguides spaced from said post, and a slide member xedly carried by said horizontal member and extending transversely between and slidably engaging said guides to urge said horizontal member and bracket into frictional clamping engagement with sa'id post.

CLARENCE lW. HUSHOWER.