US2670248A - Scaffold bracket - Google Patents

Description

Feb. 23, 1954 N1. J. HELLER SCAFFOLD BRACKET Filed Oct. 1, 1951 2 J w M Y ma a md. r 3 A 3, m M 6 m 3 E w 2/ 2 J I 8 F 8 2 W14 a 5 5 11 FiE- tially parallel to the abutment bar 1, and at its lower depending end is supported by and jointed to a brace bar 32 extending substantially parallel to the floor bar 8 and joined to the side walls of the abutment bar I. The bar 32 is joined also to a liner bar 33, nested within the abutment bar 1, and joined not only to the spacer bar 32, but likewise to the bar 28. In effect, the bars 28, 3 i 32 and 33 form a rectangular frame received within the right angle of the triangular frame and serving to reinforce that part of the scaffold bracket.

A threaded and headed tension rod 36 passes through the tubular shank of a hook 2 I, through the opening it and through aligned apertures 31, in the liner bar 33, and in an inverted channel 38 which spans the walls of the bar 33. The tension rod also passes through aligned apertures 39, one in an inverted spacer channel 4c spanning the walls of the backing bar 3!, and the other in the backing bar itself. All of thementioned apertures are on an axis parallel with the floor bar 8. A threaded nut washer 4! is screwed on the outer end of the rod 35. When the nut washer is tightened, the rod is tensioned and the head 42 on the inner end of hook 2| tightly of the upper walers 22, translating the hook if the waler is small. The tensioned rod 36 imposes a load on the backing bar 3|, which is transmitted to the frame 6, since the spacer bar 32 and the floor bar 8 and the frame bar 28 are placed in compression. Slight deformation of the fastening members takes place so that a tight grip on the waler 22 is afforded and the scaffold bracket is held against sidewise turning and against other displacement. v V

Other uses of the scaffold bracket are readily accomplished. By removal of the set screw 28 the hook [9 can be removed. Also the rod 36 and the hook 2| can be withdrawn following removal of the nut washer 4|. When that change has been eifectuated, a special T-headed tens on rod 46 can be introduced in place of the small headed screw tension rod 36 and the hook 21. The special rod 46 has a fiat, T; haped head. 41 on one end with inturned fingers 48 and 49, designed so that the fiat head 41 can be turned horizontally and can be introduced between a pair of walers 48-and 49. The rod 46 then can be revolved into the vertical plane, as shown in Figure following which, upon tightening of the nut washer 39' a firm grip is afforded. Tensioning of the rod 4'5 clamps the abutment bar I firmly against the walers 4-8 and 49 and waler such as 24.

Additionally, as shown in Figure '7, and after removal of the tension rod 3'6, it is entirely feasible to utilize as a tension rod 5i the extended reinforcing rod which a concrete wall 52. In this environment it is not necessary to have any walers whatsoever or any form of material since the concrete form tie or rod 5|, when appropriately provided with a nut washer 39, serves firmly to anchor the scaffold bracket against the wall or the sheathing of the wall with the abutment bar I in firm contact therewith.

Under some circumstances it is desired to anchor the scaffold bracket by any of the foregoing means, but with the abutment'bar I spaced some what from the closest vertical planar surface. That is accomplished in the abutment bar the rod draws the depending into contact with the lower one also against any lower customarily is embedded in" by making the opening it''- I of a rectangular configu-' ration and supplementing it by a comparable The scaffold bracket can be opening 53 through the bar 33, in registry therewith, and extending from wall to wall of the bar, so that a standoff member 54 (Figure '7) preferably a short length of timber such as a 2 x 4, can be introduced through the openings 16 and 53. The timber is preferably in sliding engagement with the side walls of the bars, and extends into bottom abutment with the bottom wall of the backing bar 3|. Similarly the abutment bar 1 in its lowermost portion is provided with a rectangular opening 56, preferably supplemented by reinforcing side plates 51 (see Figs. 1 and 8). The opening 56 is in registry with the strut bar 9 so that a standoff member 58 can be positioned through the opening 56 and can be in part supported and guided by the walls 51 into abutment with the strut bar 9. If the lengths of the standoif members 54 and 58 are chosen at the desired value, then when tension is put on the tension rod 5|, the abutment bar 1 is held exactly at the predetermined distance from the adjacent supporting surface.

In any form of the arrangement, the scaffold bracket herein disclosed is effective to serve as a mounting for floor boards or planks resting upon the floor bar 8 and extending from one of the scaffold brackets to an adjacent similar bracket. utilized either with a single waler or pairs of walers, or can be fastened directly to tension rods 5| which serve also as tie rods or the like in a reinforced concrete wall, either with or The structure is light, easy to fabricate, aflords means for utilizing standoff members, and is in general effective to assist substantially in building construction operations.

I claim:

1. A scaffold bracket comprising a rigid triangular frame including an abutment bar, a strut bar and a floor bar; a backing bar depending from said fioor bar parallel to said abutment bar and having a surface facing said abutment bar but spaced therefrom, an opening in said abutment bar in alignment with said surface and adapted to receive a stand-off member extending through said opening and abutting said surface, aligned apertures in said abutment bar and said backing bar; a tension rod passing through said apertures and having means on its outer end for engaging a supporting structure, and tensioning means on said rod engaging the side of said backing bar remote from said abutment bar.

2. A scafiold bracket comprising a rigid triangular frame including an abutment bar, a strut bar and a floor bar; means forming spaced opposed walls extending from a position adjacent said abutment bar in a direction generally parallel to the plane of said bracket, a fixed stop spaced from said abutment bar and located between the planes of said opposed walls, said walls and stop defining a guide for the reception of a stand-off member passing between said walls and abutting said stop, and means for drawing said abutment bar toward a supporting structure.

MILTON J. HELLER.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 844,148 Leger Feb. 12, 1907 964,975 Kirby g: July 19, 1910 1,650,315 Alles Nov. 22, 1927 without forms or walers.

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