US3486579A

US3486579A - Scaffold apparatus

Info

Publication number: US3486579A
Application number: US713940A
Authority: US
Inventors: Archie H Blomgren
Original assignee: ARCHIE H BLOMGREN
Current assignee: ARCHIE H BLOMGREN
Priority date: 1968-03-18
Filing date: 1968-03-18
Publication date: 1969-12-30
Anticipated expiration: 1986-12-30

Description

A.'H. BLOMGREN SCAFFOLD APPARATUS Filed March 18, 1968 Dec. 30, 1969 Q MN INVENTOR. i Alec/ms H BLOMGEE/V Mm W United States Patent 3 Claims ABSTRACT OF THE DISCLOSURE Apparatus for connection to a masonry scaffold or the like to provide support on the opposite side of the wall being worked, thus enabling the entire area to be covered. The apparatus having a first tubular member, and a second generally L-shaped member having one leg adapted to slide within the tubular member for adjusting the height of the device. On the other leg of the L-shaped member are one or more arms adapted to connect to the work scaffold.

BACKGROUND OF THE INVENTION Masonry scalfolds or the like are well known in the art. Particularly well known are stacking scaffolds which stack to raise the workers as the work subject increases in height. Coverings such as canvas or plastic sheets are often draped around the scaffolding to protect the workers from the elements. However, it is still necessary for work to stop when very cold temperatures are reached, because the covering on the known work scafiolds are generally not sufficient to provide protection for the worker and the wall being built. The apparatus of this invention provides a support for covering on the opposite side of the Wall being worked that the scaffold is on, and is adapted to allow for increased work scaffold height, without reconstruction, by telescoping upward.

SUMMARY OF THE INVENTION Briefly described, the apparatus of this invention comprises a first tubular member having a footing member attached to one end for providing stability when the one end is placed on a base such as the ground or a floor. A second member has a first leg adapted to slide within the tubular member and a second leg at generally 90 angles to the first leg. One or more connecting devices are provided on the second leg for attachment to the work scaffold. Thus, with the tubular member placed on one side of the wall, the second leg of the second member reaches over the wall, and is connected to the scaffold which is on the other side. Securing or locking devices are connected to the tubular member so that when the second leg is properly positioned for the height of the work scaffold, it can be secured in place by locking the first leg in the tubular member. Holding or mounting means are also provided on the first leg and the tubular member for carrying covering devices, such as 2 x 4s to which plastic sheeting or canvas can be attached. Thus, with the use of the apparatus of this invention, it is possible to surround a work area and the workers with protective covering against the elements. If desired, heat can be provided within the covered area.

In the drawings:

FIGURE 1 is a perspective view of a work scaffold as connected to the apparatus of this invention shown in working relation to a wall or work area; and

FIGURE 2 is a side plane view of the apparatus of FIGURE 1.

DESCRIPTION OF THE PREFERRED EMBODIMENT Referring to both FIGURES l and 2 there is first seen a stackable work scaffold 10, one of many types presently 3,486,579 Patented Dec. 30, 1969 of a generally L-shaped member 17. A second leg 19 ofmember 17 extends over wall 13 and has connected thereto a pair of

arms

21 and 22. A pair of connecting devices 23 and 24 are connected at the ends of

arms

21 and 22, respectively. Connecting devices 23 and 24 are here shown as female or tubular members, adapted to mate with extending posts or male members 11.

A plurality of securing or locking devices 27 are provided on tubular member 16 for locking leg 18 within member 16 at a desired position. In FIGURE 2 it can be seen that in this preferred embodiment locking members 27 each comprises a nut 28 mounted over an aperture in tubular member 16. A bolt 29 is provided for each nut 28, and adapted tobe threaded through the aperture and against leg 18 within tubular member 16.

A footing device 26 is connected to the lower end of tubular member 16 to provide adaquate stability when member 16 is placed on the floor, the ground, or other base surface.

Also shown in FIGURES 1 and 2 are a plurality of holding devices 31 adapted to be rigidly mounted to a member 16 and leg 18. It will be apparent, though not shown in the drawings, that a plurality of apparatus 15 can be used to achieve coverage of the work area. The holding device 31 shown in the figures is hooked to hold a. member such as a 2 x 4 to which a covering such as a canvas or plastic sheeting can be attached for covering the work area.

In operation, the apparatus 15 may be easily set up or removed, thus saving the work time of the wall builders. Member 16 is simply placed with its footing side down so that footing 26 contacts the base. L-shaped member 17 is then placed in position such that leg 18 telescopes or slides within tubular member 16. By adjusting the height of member 17 so that connecting devices 23 and 24 slip over post 11, and by tightening locking devices 27 to prevent sliding of leg 18 in member 16, the entire set-up operation has been completed. The same operation is followed for the further attachment of as many apparatus 15 as are desired to hold the covering. It will be apparent that with the apparatus 15 connected to work scaffold 10 it is possible to completely surround the work area of the wall, or to cover as much work area as desired, so that work may be continued despite the inclemency of the weather, and so that the weather will not interfere with the materials as well as the workmans efliciency.

Though the apparatus described above and shown in the drawings is that of the preferred embodiment, it will be apparent that other similar embodiments may be used without departing from the spirit and scope of the invention. For example, connecting devices 23 and 24 can take a form other than the female members shown. Also, more or less 'of

arms

21 and 22 could be used if desired. Further, various locking devices can be used other than those. here shown as devices 27 including nuts 28 and bolts 29.

The embodiments of the invention in which an exclufive property or privilege is claimed are defined as folows:

1. In a masonry scaffold or the like including a work scaffold, the improvement comprising: tubular means; generally L-shaped means having at least one leg sized for sliding with said tubular means; means for connecting the other leg of said L-shaped member to the work scaffold including a spaced pair of arms connected to and extending generally parallel from said other leg of said L-shaped means; each of said arms terminating in a female member adapted to mate with an extending male member on the Work scaffold; and lock means mounted on said tubular means for locking said one leg of said L-shaped means at a selected position in said tubular means.

2. The apparatus of claim 1 in which said lock means comprises: a plurality of apertures in said tubular means; a plurality of nuts mounted concentric with said apertures; and a plurality of bolts each threaded in one of said nuts and adapted to be threaded into'said tubular means for contacting said one leg of said L-shaped means.

3. The apparatus of claim 1 including: a plurality of holding means selectively mounted in spaced relation on said tubular means and said L-shaped means, and adapted to hold cover means for wind blockage and the like.

References Cited UNITED STATES PATENTS REINALDO P. MACHADO, Primary Examiner US. Cl. X.R. l82132