US 2376966 A
Description (OCR text may contain errors)
May'29, 1945 A, t F. o. INGERMAN 2,376,966
scAFFQLD LEDGER BRACKET Filed Feb." 22', 1944 f E QZ s mvmon l k. Freo 0. Ingerman-' I ATToRNEx/.s l
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Patented May 29, 1945 j t f #STATES PATENT yz'zasss u scnFoL-mEDGERiBMoKEm FredrgIngerman, San Trane-iscofCalif. Application February 22, 1944, sentirne. 523,422
sclaims. (cisne-s2) This invention relates to scaffold ledger brackets of the detachable ltype found usefulin the erection of temporary scaffolds The invention forming the subject matter hereof constitutes an improvement upon thesubject matter of Letters Patent 2,321,916, granted to me on June 15, 1943,`for improvements in a Scaiold ledger bracket.
In building construction and maintenance it is generally necessary to erect a temporary scaf-V folding. To -avoidmakeshift and unsafe structures it is desirable to provide a bracket means with which a strong, safe scaffold may be conveniently and quickly erected. Moreover, it is desirable that the bracket device be extremely simple to install and dismantle andjth-at it be susceptible of repeated re-use. Beyond this, it is important that the bracket element of the scaffold should be safe to use andcapable of supporting weights, and withstanding stresses and strains, far in excess of those towhich it would normally be subjected in ordinary use.
The device forming the .subject matter of this application attains the stated objects, andothers v to become more apparent as `this specification proceeds, and will be found useful in this art.
In the drawing wherein a preferred form o bracket III is struck from a one-piece rectangularl blank of metal. In stamping out the bracket top and bottom nailing apertures II are punched in the plate adjacent its respective ends. Additionally, three nailing apertures I2 are 'struck' in the area lof the blank adjacent the upper nailing apertures I I.
Intermediate the ends of the blank forming the bracket Il) there is cut, as by stamping, an elongated slot I6 which receives a conventional scaffold ledger board (indicated in broken lines inFigureslandZ).
It will be noted from Figure 1 that with a blank thus punched and stamped but four bends are required to produce the finished bracket. The blank is first bent transversely and inwardly at right angles at each end of the elongated slot I6, and then the inwardly bent portions are `bent transversely and outwardly at their mid-points to denelegs I3 and I4 and wall plates I8 and I9 respectively. When the Wall plates I8 and I9 are laid against a wall structure the device presents a crowned portion I5, slotted asiat I6, to
accommodate and support the end of a/scalfold a ledger board is inserted in' the bracket through the slot I6 of the crowned4 portion I5,abutting the Wall surface and resting upon the leg I4. The ledger board is then secured to the bracket by driving a single nail in a selected one of the nail holes I2 in leg I3, depending upon the angle which the ledger board must assume in relation to the bracket I0. In Figure 2 there is illustrated a three-position connection of the ledger board to bracket IU indicating that the bracket is adaptable for use at a building corner, as well as in those instances wherein thev ledger board will be disposed at right angles to the w-all plates I8 and I9.' It is unnecessarythat the nail driven through aperture I2 to connect the ledger board and bracket I0 be driven all the way home as it plainly an anchorage nail and may therefore have sumcient of its shank protruding to permit quick dismantling.
When it is desired that the scaffolding be dismantled, the anchorage nail driven into theedge of the ledger board through nail hole I2 is withdrawn and the board is removed from the bracket. Following this, leg I4 of bracket I0 is tapped upwardly to move wall plates I8 and I9 with respect to the nails driven through said plates and yto bring the nail heads into registry With the larger diameter of apertures II. The bracket III may be liftedover the nail heads and away from the supporting wall. Consistent with common practice, the nails may then rbe driven home t0 form a permanent part of the supportp ing wall structure. I
It will be apparent to those skilled in the art that illustrated in the accompanying drawlng,
full protection is desired ,according to the scope i of the appended claims.
The invention claimed is:
.ing slot therein and a pair of Wall plates connected thereto.
2. A scaioldY ledger bracket comprising, al
member formed from a one-piece vblank wherein vl0 a.centralportionnisiraised with respecty to asbers, and provided with a board receiving slot.
LAV scaiold ledger bracket comprisingv a i 5 crowned member having a ledger board receivj 4. A scaffold ledger bracket formed from a onevpiece blank comprising a pair of apertured Wall plates, extensions on said wall plates-bent loutward1y,.a piece connecting said extensions in a plane paralleling said wall plates, and a boardreceiving slot in said connecting' piece..
5. A scaffold ledger bracket formed from a one-piece Ablank comprising, a pair of wall plates,
extensions projectingY outwardly from said wall plates, one of which extensions is adapted to support a-ledger boardand the other of .which is adapted to be connected. to a board thus supported, a, piece connecting the two vextensions and lying in a'plane parallel to the said wall plates, and a board receiving slot in said connecting piece. f l o O. INGERMAN.