US1629718A - Scaffold bracket - Google Patents

Description

D. J. LOCKARD ET AL SCAFFOLD BRACKET May 24,1927. 1,629,718

Filed Aug. 16. 1 926 Patented May 24, 1927.

,mvm LOGKARI-JZ-JANDD'AVID n. LbCKARD', or roLEno; oHIol,

soAr-ronn BRACKET; l v

A-pplica tion' filedAugust- 16, 1926. Serial- N0. 129,348?

This: invention" relates; to scaffolds, andpartic'ularly toe-a1. bracket for supporting,

7 scaifoldi platform members and intended for use between .adj acent-building walls. The object: of: the inventionv is the provision of a: simple, strongi'and'durable scaf fold .bracket-thatis capable of use in narrow spaces between adjacent buildingwalls, and which is adapted to have its gripping or 10 clinging engagement with the walls, in-

creased, by the application of: weight to its platform; supporting part; Furthermore, the bracket" is: adjustable within limits to suit the width of the space in which dise posed. i Y

The invention is fully described in the following specification, and while in its broader aspect it is capable of embodiment in numerous forms, a preferred embodiment thereof is illustrated in the accompanying connected thereto for engagement with the drawings, in wh1ch,

Figure 1 is a top plan view of two brack-' ets embodying the invention in usable position between adjacent walls and connected by a platform member, and Fig. 2 is an enlarged section on the line 2-2 in'Fig. 1.

Referring to the drawings, 1, 1 designate two arms or link members p-ivotally connected together at their inner ends by a bolt :0 or other suitable connection 2 and each having its outer end pivoted to a foot plate 3 that is provided with spurs 4.- on its outer side to adapt it to have gripping or clinging engagement with a wall 5 against which it bears. Each arm 1 is adjustable in length so that the bracket arms may be lengthened or shortened to suit the width of the space between two walls 5, 5 between which disposed and, in the present instance, is shown as comprising telescoping sections which are secured together by a bolt or pin 6 rojecting through an aperture in one mem er and any one of a series of longitudinally spaced apertures 7 in the companion member.

The bracket arms 1 act in the manner of a toggle and are of a combined length greater than the width of the space in which the bracket is to be disposed, so that when the bracket is applied in inverted V-form any downward pressure applied to the connected ends of the bracket arms will have a tendency to straighten out the arms and apply a greater gripping coaction of the feet members 3 with the respective wall surfaces.

The scaflold platform 8, which in the (present, instance-is shown asaic'omprisingn a.- V

plank, is supported: at each end? bya frame 7 or cradle -9, whichisisuspen'ded from the ad-. jaeent bracket arms 1- at oradjacent tot-he pivotal point of connection thereof. In the present-instance, .eachcradle 9, ,as-it may be called for convenience, comprises three'bars or: links connected together in triangular form with two of the-links: 10, 10 pivotallyconnectedat their upper ends to the bolt or pivot member 20f thebracket arms; at opposite sidesof'the arms-and connected-at; their lower ends to respective opposite endsof a bottom cross-bar 11 on which latter the platform member 8 is intended to rest. In order to prevent the swinging of the cradles '9 and platform 8 relative .to the bracket arms platform in such manner that the two pawls cooperate to prevent any swinging of the platform, as clearly shown in the drawing. It is apparent that we have provided a simple and eflicient scaffold bracket for use in the space between the adjacent walls of buildings, which bracket is adjustable within limits, to suit the width of the space in which disposed and is adapted to have its gripping action with the supporting walls increased by the application of weight to the bracket. We wish it understood that the invention is not limited to any specific construction, arrangement or form of the parts, as it is capable of numerous modifications and changes without departing from the spirit of the claims.

, Having thus described our invention, whatwe claim as new and desire to secure by Letters Patent is:

1. A scaffold bracket having pivotally connected toggle arms adapted to hear at their outer ends against opposing supports, the pivotal connection of the arms being above their support engaging ends, and platform supporting means carried by the arms and tending by its weight to bring the arms in alignment.

2. .A scaffold bracket having pivotally connected bracket arms disposed in inverted V-form when in use and having their outer ends in outward thrust engagement with the respective surfaces of opposed supporting members, and a scaffold supporting means respective surlacesof opposed supporting, members, and a scatlold supportmg means suspended from theinner ends of the arms for pivotal ll'lOVBl'llBlltS concentric to the pivotal connection of the arms, and means for preventing swinging movements of the seal? "fold supporting means relative to the arms. 4. A scaffold bracket having pivotally connected arms disposed in lnVe1't8l 'V form when in use and adapted to have their outer ends in outward "thrust 'engagen'ient with the respective surfaces of opposed sup- 7 ports, a scafiold'supporting cradle pivot-ally 1 suspended from the pivotal connection of the toggle arms, and means carried by the armsand adapted to coact with a supported scaffold to prevent swinging, movements of the cradle and supported scafl'old relative to.

the arms;

5. A scall'old bracket having pivotally connected longitudinally adjustable arms disposed in inverted V-form when in use and adapted vto have their outerendsiln outward thrust engagement with respective surfaces 0t opposite supports, and a scaffold support-'- mg cradle suspendedirom :the innerends of the arms and comprising a pair of-links disposed in outward anddownward diverging relation and a scaffold supporting cross link connected at its ends tothe lower ends of the dlverging links.

In testimony whereof we have hereunto signed our names to this speellic'ation.

DAVID-J, .LOCKARD;

1 l DAVID LOOKABD.

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