US2980384A

US2980384A - Scaffold hanger

Info

Publication number: US2980384A
Application number: US821544A
Authority: US
Inventors: Henderson G Leonard
Original assignee: Individual
Current assignee: Individual
Priority date: 1959-06-19
Filing date: 1959-06-19
Publication date: 1961-04-18
Anticipated expiration: 1978-04-18

Description

April 18, 1961 H. G. LEONARD SCAFFOLD HANGER 2 Sheets-Sheet 1 Filed June 19, 1959 INVENTOR. HENDERSON G. LEONARD HTTORNfY April 18, 196] H. e. LEONARD SCAFFOLD HANGER 2 Sheets-Sheet 2 Filed June 19, 1959 IN V EN T 0R.

Fig 5 HENDERSON 6. LEON/1RD @MMM ATTORNEY Unite This invention relates to improvements in scaffold hangers. The principal objects of this invention are:

First, to provide a novel form of scaffold hanger for securely supporting a workmans scaffold from an overhead beam or truss which hanger is adjustable to fit various sizes of supporting beams.

Second, to provide a scaffold hanger'having adjustable divergent beam engaging hooks that are held against collapse by a hand rail supporting bracket on the scaffold hanger.

Third, to provide a scaffold hanger which is adjustably engageable with supporting beams of different sizes and lockably rollable in adjusted position to prevent accidental disengagement from the beam.

Fourth, to provide arscaffold hanger having spaced beam engaging arms tied together to move concurrently along a supporting beam and having a winch and lift cable mounted between the arms with the cable guided by the tie between the arms for hoisting the hanger to position.

Fifth, to provide a scafiold hanger which is simple to adjust and relatively inexpensive to manufacture and yet is rugged and positive in its supporting engagement with the supporting beam.

Other objects and advantages of'the invention 'will be apparent from a consideration of the following description and claims. The drawings, of which there are two sheets, illustrate a highly practical form of the scaffold hanger.

Fig. 1 is a fragmentary. side view of the scaffoldhanger of the invention.

Fig. 2 is a fragmentary cross sectional view taken along the plane of the line 2-2 in Fig. 1.

Fig. 3 is a fragmentary end elevational view of the hanger.

Fig. 4 is a fragmentary cross-sectional view taken along the plane of the line 4-4 in Fig. 3.

Fig. 5 is a fragmentary cross-sectional'view illustrating the locking engagement between the hand rail support and the divergent beam engaging arms of the hanger taken along the plane of the lines 5-5 in Fig. 3.

In the erection and maintenance of overhead structures such as bridges and roofs it is often necessary to support a platform underneath the structure on which workmen may stand while Working on the structure overhead. This has been done'by means of scaffold hangers that engage a beam or truss of the structure and hang therebelow to support a foot plank or scaffold for the workmen to stand on. It will be appreciated that two scaffold hangers engaged with spaced beams -or trusses are employed to support the opposite ends of the scaffold or platform but only one of the scaffold hangers islillustrated herein.

The hanger comprises a U-shaped support shownin part in Fig. 1 and including a horizontal bar 1 :adapted to support a scaffold platform and upright arms2. Near :the upper .ends of .the 2 ;a pairmt divergent bars 3 Sift-ts Y ,receive and support rollers 9. Rigidly secured to each hanger member 7 asby welding and projecting inwardly therefrom in opposed overlapping relation to the corresponding part on the other hanger member is a spreader bar 10 having a loop or ferrule 11 on its projecting end and defining a'series of transverse holes 12. The ferrule 11 on one spreader bar embraces the other spreader bar and holds the bars in straight overlapping but longitudinally adjustable relation. A pin 13 is passed selectively through the holes 12 to determine the spacing between the upper ends of the hanger member 7 and the rollers 9.

Vertically adjustably mounted on each upright arm 2 above the point of connection of the divergent bars 3 thereto is a loop or sleeve 14 having an outwardly and upwardly angled bracket 15 on its outer side. The sleeve 14 is adapted to be clamped to the upper end of the arm 2 by a set screw 16 with the lower edges of the sleeve in abutting engagement with the divergent bars 3 as indicated at 17 in Fig. 3. The brackets 15 are adapted to support the ends of hand rails shown in phantom at 18 that extend in parallel relation above a platform supported on the crossbar 1.

From the foregoing description it will be apparent that by loosening the clamp screws 16 and raising the sleeves 15 and also removing the pin 13 the angled hook member 7 and the rollers 9 carried thereby can be spread further apart or moved closer together depending upon the size of the beam overrwhich the rollers 3 are to be hooked. The spreading adjustment of hook member 7 permits easy installation of the hangers on the beam by permitting the rollers to be engaged over the opposite edges of the beam and then drawn close together so that the .rollers and hooks cannot be accidently disengaged from the beam. The lock pins 13 are then passed through the holes 12 in the overlapping spreader bars and the sleeves 14 are moved downwardly into blocking engagement between the lower ends of the divergent bars 3 and clamped in place by clamp screws 16. The lower crossbar 1 is in position to safely support a scaffold platform and the brackets 15 are ready to support spaced hand rails.

In the operative position of the hanger the spreader bars 10 primarily prevent accidental spreading of the hook member 7 and consequent disengaging of the rolls from the supporting beam. In addition, the blocking engagement of the sleeves 14 between the divergent bars 3 prevents downward tension applied to the connecting bolt -4 from drawing the divergent bars 3 and the pins 6 at their upper end closer together thus spreading the rollers 9. The load on the scaffold is thus safely and approximately equally distributed between the four rollers 9 and the pivot pins 6 so that a safe and stable support for the scaffold is provided. 4

The hanger structure thus far described is entirely adequate for securely and safely supporting a scaffold from a beam, but in order to facilitate the raising and lowering of the scaffold with or without workmen thereon and for temporarily relieving the load on the rollers 9 and angled hanger-members 7 for shifting the scaffold along the sup-' port beam, a winch indicated in its entirety at 19 is supported between the upright arms 2 of the U-shapedsupport. The winch is connected to the U-shaped support winch by a pivot pin 21. In order to hold the'strapszfl "nected to their upper endsand-Swingablefin parallel ,straps having U shaped clipson th ir lower en 'ing the edges of said uprightiarrns to 'prevent'later al tilting of the straps, a "cable carried byi'said*winc h"and "adapted to extend thereabove to steam engagingiclamp, "a tie bar extending itransyerse'ly between the upper ends I V v "of-said upright arms andhavifig u-shapea clips case 75 hanger bar and adapted to be clamped theretoin abutted AA AAA A by downwardlyfdivergent straps 20 .conneetedrto the upright their lower ends are provided with downwardly tu nedl

b

1 ,27 wi outward y. star n ushanedn l psl th ea d l Qfll b o e c ip ee hc'ma nl n Lappliedito the straps 2Q "isrvertically upward, vt heljqhannel :shaped'clips 23 and screwsj2 4 are.suflicient vto hold the ing hand rail engaging brackets mounted on their outer d ver n r p n upward extending pps ti tb w n r i l ms e e r25 om- W hi ended nwar ly I suitab e o 26 t at se be a as dfi e pbolt 2 7 carried by a temporary supporting clampZ S eng'agepassed through one of said holes and comprising diverfe Ov r t e fla s o a am u h asis ndi a d at from which thelscafiold is to;be supportedhflhe clamp 28 isrelatively small and light ,and can be installed or removed by meansoffa long pole prior to attaching the ing on the beam; With the clamp '28 and cable 25con} inecte d to the beam workmenmay stand on the scaffold and operate the cranks30 of the winches carried byithe ends embracing the edges of said upright arms, and a U-shaped'angled clipse'cured in concavely facing relation to theside of said tie bar and defining a guideway passing the cable of said winch, the'upper ends of said secured theretog -Ihese climembrace the5edges offthe 5 upright arms having sleeves adjustably slidable thereon pris ta s '2' a 9nn u -s re si24Lat rest d Y mnsh h l P o ided t r fo th i..upr ght r s: a

between said tie bar and the pivotal connections between said divergent bars and said upright arms with means for clamping said sleeves in blocking engagement with'the divergent edges'of said divergent bars,- said sleeves havsidesi a A a t r 2. A scaffold.hangercomprising a U=shaped support having upright arrns'having vertically spaced holes therein, a hanger selectively connected to each arm by a bolt gent bars engaged with the bolt, beam engaging hooks pivotal-1y connected to theupper ends of said divergent bars ,andhaving opposed inwardly extendingpintles on l U i p r their upper ends, rollers, rotatably mounted on said'pinscafiold and scafiold hanger thereto, -;Alternatively the tles, 'spreader bars fixedly secured tosaid hooks and "clamp 28 can be installed from above by some'onestandfprojectinginwardly into overlapped relation, ferrules on eachspreader encircling} the overlapping spreader," and means selectively connecting said Spreaders in selected degrees of overlap to adjustably fix the, spacing of said ha'ngersat each end ofrthe scafiold to raiseth'erscaffold 25 r n i rollers, and n mi rf en i 1ing and themselves to the operative position 0 f the scaffold. gThe clamps 28 do not providelsuflicient securityand safety to support the scaffold "as the workmenmovea around :in the'performanceof their duties but after the said upright armsaud adapted to be clamped thereto in abutted relation between said divergent barsto obstruct collapsing movementtofthedivergent bars; r

' l3. A scafiold hanger comprisingVajU-shaped support an 11511851.; fl fi b n 5 a engaged, W 30 having upright arnis'having vertically spaced holes therethe beam as previously described the scalfoldis firmly t "and safely supported for tree movement offtheiwork inen onthescafi0ld r t H W M.

1111 order to prevent lateral flexing of the upright bars clips secured in concavely facing relation to the sides channel for the upwardly extending reachiof the cable -.25 connected to each hanger. 'Ihe tie bar 31 thus pergethervaind guiding the c able so that the cable be held m upwardly 'extendgd posmon and will -support the nected to the upper ends-of saidtdivergent bars and having opposed' inwardlyextending pintles on their upper winch 19 against swinging downwardly about the pivot pin 21when the cable is not under tension. f V i plane's perpendicular to the plane of the 'U-s'haped' support, angled hanger members pivotally connected to the upper ends of said divergent bars and having 'ifl'wa'rdly directedpintles on their upper ends with rollers' thereon,

spreader bars rigidly connected to said angled hanger members and projecting inwardly 'in'over1appi'ng relation with the spreader bar on the oppds'edfhangr member,

means forming guides on said spreader'bars holding the lapped bars in lapped relation, said spreader bars'defining holes r selectively positioned in registering relation, pins passed through registering holesin said spreader bars, a

winch positioned 'between said upright afmsl and con-;

\ nected thereto by downwardly divergent straps; said I x.

" 3 eihbrac. -mgmwardlyinto overlapped relation; a ferrule on one 'bars fixedly secured to said hooks and projecting incirclingssaid upright arms and adaptcd'to bev clamped thereto in abutted relation between said divergent bars f the tie bar by bolts 36 to form a guide and :retaihing 5 to obstruct lcollapsing movement of the divergent bars.

4. A scafiold hanger comprising a hanger barvhaving vertically' spaced holes therein, divergent bars engaged with a pin through one of said holes on opposite sides of the hanger bar, beam engag'ing hooks pivotally' conends, rollers rotatably mounted on said pintles, spreader wardly into overlapped relation, ferruleson: each spreader 55 encircling the overlapping spreader, a pin selectively connecting saidspreaders in selected degrees of overlap to 'adjustably fix the spacing ofsaidhooks and said rollers, and an annular member encircling said hanger bar and adapted -to be clamped thereto in abutted relation between said divergent bars to "obstruct collapsing movem of h d rs ba s A t 5. A scaffoldhanger comprising a hanger bar-having Jrertically spaced holes therein, divergent bars with 'a pin h u 'of-s dho es, b en a h o -p y connected to the upper ends of said divergent bars and :having' opposed inwardly extending pintles ontheir up 'per ends; rollersgrotatably mounted -:on said pintles,

spreader bars fixedlysecured to said hooks and projectspreader encircling the overlapping spreader, apin selectively connecting said Spreaders in selected degrees of overlap to adjustablyfix the 'spacin g' of said hooks and said rollers; and an annular' member iencircling 'said relation between said divergent bars to obstruct collaps- :ing movement of the divergent bars.

6. A scaffold hanger comprising a U-shaped support having upright arms with divergent bars pivotally connected to their upper ends and swingable in parallel planes perpendicular to the plane of the U-shaped sup port, angled hanger members pivotally connected to the upper ends of said divergent bars and having inwardly directed pintles on their upper ends with rollers thereon, spreader bars rigidly connected to said angled hanger members and projecting inwardly in overlapping relation with the spreader bar on the opposed hanger member, means forming guides on said spreader bars holding the lapped bars in lapped relation, said spreader bars defining holes selectively positioned in registering relation, pins passed through registering holes in said spreader bars, a winch positioned between said upright arms and connected thereto by downwardly divergent straps, a cable carried by said winch and adapted to extend thereabove to a beam engaging clamp, a tie bar extending transversely between the upper ends of said upright arms, and an angled clip secured in concavely facing relation to the side or said tie bar and defining a guideway passing the cable of said winch, the upper ends of said upright arms having sleeves adjustably slidable thereon between said tie bar and the pivotal connections between said divergent bars and said upright arms with means for clamping said sleeves in blocking engagement with the divergent edges of said divergent bars.

7. A scaflold hanger comprising a U-shaped support having upright arms with divergent bars pivotally connected to their upper ends and swingable in parallel planes perpendicular to the plane of the U-shaped support, angled hanger members pivotally connected to the upper ends of said divergent bars and having inwardly directed pintles on their upper ends with rollers thereon, spreader bars rigidly connected to said angled hanger members and projecting inwardly in overlapping relation with the spreader bar on the opposed hanger member, means forming guides on said spreader bars holding the lapped bars in lapped relation, said spreader bars defining holes selectively positioned in registering relation, pins passed through registering holes in said spreader bars, a winch positioned between said upright arms and connected thereto by downwardly divergent straps, a cable carried by said winch and adapted to extend thereabove to a beam engaging clamp, a tie bar extending transversely between the upper ends of said upright arms, the upper ends of said upright arms having sleeves adjustably slidable thereon between said tie bar and the pivotal connections between said divergent bars and said upright arms with means for clamping said sleeves in blocking engagement with the divergent edges of said divergent bars.

8. A scaffold hanger comprising a U-shaped support having upright arms with divergent bars pivotally connected to their upper ends and swingable in parallel planes perpendicular to the plane of the Ushaped support, angled hanger members pivotally connected to the upper ends of said divergent bars and having inwardly directed pintles on their upper ends with rollers thereon, spreader bars rigidly connected to said angled hanger members and projecting inwardly in overlapping relation with the spreader bar on the opposed hanger member, means forming guides on said spreader bars holding the lapped bars in lapped relation, said spreader bars defining holes selectively positioned in registering relation, pins passed through registering holes in said spreader bars, a tie bar extending transversely between the upper ends of said upright arms, the upper ends of said upright arms having sleeves adjustably slidable thereon between said tie bar and the pivotal connections between said divergent bars and said upright arms with means for clamping said sleeves in blocking engagement with the divergent edges of said divergent bars.

References Cited in the file of this patent UNITED STATES PATENTS