US2988181A - Scaffolds - Google Patents

Description

June 13, 1951 DARREY 2,988,181

scAFFoLDs Filed April 13, 1959 :JOHN d. DRREJ/ United States Patent O 2,988,181 SCAFFOLDS John J. Darrey, 540 S. Creek Road, Racine, Wis. Filed Apr. 13, 1959, Ser. No. 805,917 2 Claims. (Cl. 189-13) This invention relates to improvements in scaffolds and more speciiically to a demountable and adjustable scaffold comprising spaced support members to be temporarily secured to the side of a building and provided with spaced apertures which may be aligned' with apertures in so-called horizontally disposed beams.

The main object of the invention is to provide a multiple number of vertical support members or posts which are arranged to rest on the base of a building unit and to rise vertically along the side of said building. The supports are provided with two rows of opposed and spaced apertures throughout their lengths. A pair of horizontally disposed beams have each an extension at one end which may fit over and slide along said vertical supports. These extensions also are provided with multiple rows of opposed and spaced apertures similar to those in said vertical supports with apertures in said supports and extensions capable of being aligned to receive fastening members to secure said extensions to said supports. The opposite ends of the beams have vertical extending extensions which t over and slide along additional vertical supports, secured temporarily together and in operative relationship, strongly supporting the horizontal beams whereby heavy loads can be arranged on the beams without danger of the scaffold collapsing.

Another object of this invention is to provide a scalolding unit which comprises a pair of vertically extending supports which are to rest or bear on the base blocks of a building and arranged to have attached, in sliding engagement therewith, with horizontally extending beams and capable of temporarily mounting such beams straight out from the building or having such beams extend at a 45 angle, either way, from such building.

The objects and attendant advantages will become more readily apparent from the detailed description of the invention which follows, reference being had to the accompanying drawings, in which:

FIGURE l is a side view of my invention in operative position.

FIGURE 2 is a top View of my invention showing the positions capable of being assumed by the horizontal beams.

FIGURE 3 is a detailed sectional view on the line 3-3 of FIGURE 1.

Referring to the drawings and more particularly to FIGURE 1, the scalold shown therein, as designated by the letter A, includes a pair of supports having two rows of oppositely spaced apertures 11 and 12. A bracket 13, L-shaped in form, is permanently secured, by welding, to the top of each vertical support and is provided with apertures to receive threaded hooks 15 which can readily be looped about a building member 16, to strongly hold the vertical support 10 to the side of the building 17 by using any suitable fastening member 18 which screws on the free end of the hooks 15.

Another L-shaped bracket 20 may be temporarily mounted -on the bottom end of each vertical support 10 and may have additional apertures to also receive the hooks 15, or to merely temporarily secure the bracket 20 to the vertical support.

In operative relationship, the brackets 20, rest on the top surface of the building blocks 21 to provide a sound and solid base for the vertical supports.

Prior to mounting the Vertical supports on the side of `2,988,181 Patented June 13, 1961 a building and to securing the brackets 20 to the bottom of such supports, I slide one end of a horizontal beam 22 along each vertical support from the bottom end of each vertical support. The horizontal beam 22 comprises a tubular end section 23 having six rows of spaced apertures 24, 25, 26, 27, 28 and 29; see FIGURE 3.

The apertures 24 are spaced directly across from apertures 27; the apertures 25 are spaced directly across from apertures 28; and the apertures 26 are :spaced directly across from apertures 29.

When the apertures 2.4 and 27 are in line with apertures 11 and 12 respectively, the vertical supports and the horizontal beams are in the position as shown in FIGURE 1. When apertures 26 and 29 are in line with apertures 12 and 11 respectively, the horizontal beams are swung out at an approximately 45 angle from the side of the building, or from the arrangement illustrated iu FIGURE 2, the position of the horizontal beam, indicated by the letter B. When the apertures 25 and 28 are in line with apertures 11 and 12, respectively, the horizontal beams are swung out at an approximately 45 angle from the side of the building, or, from the arrangement illustrated in FIGURE 2, the position of the horizontal beam, indicated by the letter C. This particular application of matching Ithe apertures 25 and 28 or 26 and 29 with holes 11 and 12, provides an arrangement to set up, at any corner of a building, a scaffold that can readily be adjusted, to provide a scaffolding structure whereby a workman may work from a horizontal platform laid over the horizontal beams from any point entirely around the building. The utility and advantage of having the ability to swing such horizontal beams, either to one side or the other is apparent. The scaffold can thusly be arranged to work at the hard' to reach corners and to work easily at so-called inside or outside corners.

The free ends of the horizontal beams have vertically extending tubular members 30, apertured, as designated by the numerals 31. These tubular members 30 have vertically extending openings of such diameter to receive end posts 32. These posts 32 have spaced apertures 33 whereby, as the horizontal beams 22 are raised or lowered along the vertical supports 10 accordingly, the supports 30 are raised and lowered along the posts 32 and locked in place by aligning the apertures 31 with the apertures 33 on the posts 32 to keep the horizontal beams on an even horizontal plane. An additional advantage in using the posts 32, is that, greater loads may be placed on the horizontal platform arranged over said horizontal beams. The ends 34 of the posts 32 are provided with foot stands 36 having flat surfaces of substantial bearing area to rest on the ground 35 or any other material in which the scaiold is being mounted.

A truss 37 is secured to the horizontal beam 22 and end sections 23 to provide further strengthening of the beams 22 whereby substantial loads may be carried by said beams. Any suitable locking means can be used to lock the tubular section 23 to the tubular member 10.

It is believed that the many advantages of a scaffold constructed in accordance with the present invention will be readily understood and although a preferred embodiment of the device is as illustrated and described herein, it is to be understood that changes in the details of construction and in the combination and arrangement of parts may be resorted to which will fall within the scope of the invention claimed.

I claim:

l. A scaiold comprising spaced upright tubular members, a beam having Atubular end sections for slidably engaging said members, a bracket permanently secured to the top of one of said members to attach said member to the wall of a building, said last named tubular member having a removable bracket projecting from the bottom of said member, a foot stand mounted on the bottom of the other member, said removable bracket and foot stand adjustable to maintain said beam on a horizontal plane relative to said wall, each of said members provided with a pair of rows of opposed and spaced apertures, one of said tubular sections provided with a multiple number of pairs of rows of spaced and opposed apertures, any pair of said rows of opposed apertures adaptable for alignment with said opposed apertures in said tubular member attached to said wall, alignment in one instance providing mounting of said beam in a horizontal plane straight out from said wall, alignment in other instances providing mounting of said beam in a horizontal plane but at various angles to said wall, locking means inserted in said aligned apertures, temporarily locking said tubular section and tubular member together.

2. A scaiold comprising spaced upright tubular members, a beam having tubular end sections for slidably engaging said members, a bracket permanently secured to the top of one of said members to attach said member to the wall of a building, said last named tubular member having a removable bracket projecting from the ybottom of said member, a foot stand mounted on the bottom of the other member, said removable bracket and foot stand adjustable to maintain said beam on a horizontal plane relative to said wall, each of said members provided with a pair of rows of opposed and spaced apertures, one of said tubular sections provided with six rows of spaced and opposed apertures, any pair of said rows of opposed apertures adaptable for alignment with said opposed apertures in said tubular member attached to said wall, alignment in one instance providing mounting of said beam in a horizontal plane straight out from said wall, alignment in other instances providing mounting of said beam in a horizontal plane to the right or left of any position of said beam in the irst instance and at an approximately 45 angle to said wall, locking means inserted in said aligned apertures, temporarily locking said tubular section and tubular member together, the other tubular section provided with two rows of spaced and opposed apertures which may be aligned with the opposed apertures in said other tubular member to provide an outer support for said beam at any angular position assumed by said beam relative to said wall,

References Cited in the file of this patent UNITED STATES PATENTS v786,054 Roy Mar. 2s, 1905 1,707,894 Bergesen Apr. 2, 1929 2,290,535 Cavins July 21, 1942

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