US3213965A

US3213965A - Portable lean-to scaffolds

Info

Publication number: US3213965A
Application number: US320764A
Authority: US
Inventors: Fred P Fedoryk
Original assignee: Individual
Current assignee: Individual
Priority date: 1963-11-01
Filing date: 1963-11-01
Publication date: 1965-10-26
Anticipated expiration: 1982-10-26

Description

Oct. 26, 1965 F. P. FEDORYK 3,213,965

PORTABLE LEAN-TO SCAFFOLDS Filed NOV. l, 1963 III A I NVENTOR,

ffo A ffaafV/f United States Patent O 3,213,965 PORTABLE LEAN-TG SCAFFLDS Fred I. Fedoryk, 71 Fig St., Central Isiip, Long Island, N.Y. Filed Nov. 1, 1963, Ser. No. 320,764 1 Claim. (Cl. 182--230) The present invention relates to improvements in scaffolds such Ias are used for finishing, painting or repairing outside walls of buildings and, more specifically, it relates to a new Iand improved scaffold of the lean-to type which is particularly well adapted for use in connection with two or three story structures.

lOne object of the present invention is the provision of a device of the character described which is light in weight, quickly installed and dismantled, safe and sturdy in use, and comparatively inexpensive to manufacture.

Another object of the present invention is the provision of a device of the character described which is adjustable, while lfor its installation does not require any appreciable lamount of skill -or efiort, which can be used on ioundation walls or other `walls without finish -to which other scaffolds cannot be fastened, and which also is reliable in use and well adapted for withstanding the rough usage to which devises of this type ordinarily are subjected.

With the foregoing and other objects which will apear as the description proceeds, the invention consists of lcertain novel details of construction 'and combinations of parts hereinafter more fully described and pointed out in the claim, it being understood that changes may be made in the construction and arrangements of part-s of the embodiment disclosed without departing from the spirit of the invention as claimed.

`In the accompanying drawing I h-ave set forth an illus- -trative embodiment of my invention.

In said drawing:

FIGURE 1 is a front elevation of a preferred embodiment of my invention;

FIG. 2 is a side elevation; and,

FIG. 3 is a fractional, enlarged sectional view on the line 3-3 of FIG. 2.

Similar reference characters refer to sim-ilar parts throughout the severa-l views.

In FIGS. `1 land 2 of the drawing a wall 1 and a floor surface 2 are indicated by dash-and-dotted lines. My new and improved scaffold consists primarily of 4a pair of lean-to posts 3, on each of which is mounted a bracket member 4 that carries one or more platform blanks or boards 5. The posts 3 are leaned yagainst the wall 1, at yan angle of about thirty degrees, and they are preferably supported at the bottom by flat base plates or blanks 7 for the purpose of preventing the posts 3 from sink-ing into a soft surface. The upper ends of the posts 3 preferably are provided with rubber bumpers 10 or the like for preventing the -devise from manring finished wall surfaces.

While the elements 3 and 4 can be made of wood, for instance the posts 3 of lumber vbeing two by eight inches in cross-section, I prefer to make them of moulded steel or aluminum bars of a triple-U-shaped formation, as shown in FIG. 3, having channels '1?1, 12 and d5. I :also prefer to make the bracket 4 of metal parts 17, 20 and `2.1. The member 17, which I prefer to call a bracket base member, preferably is U-shaped in cross-section `and has a kweb portion that is adjustably secured to the web port-ion of the channel I12 by means of one or more screws 22, that are extended through one or more holes 23 of a row of holes 23 in the channel portion L12 of the post 3. The ange portions of the U-shaped member 17 have

holes

24 and 25 in opposite sections, and the lower end ice of the brace member y20 is pivotably secu-red to the member 17 by means of a bolt 27 extending therethrough as well as through a pair of opposite holes 25.

The upper end of the brace member 20 which may be bi-furcated as shown, is pivotally connected -t-o one end of the horizontal member 21 at 27, and the other end of the .member 20 is pivotal'ly connected to the upper portion of the member 17 by means of a bolt 30 (FIG. 27) extending therethrough .as well .as lthrough a pair of opposite holes Z4. This arrangement allows -an adjustment of the angle 311, .so that the platform 5 always can be maintained in Ia level position, irrespective of whether or not the posts are disposed to the ywall .1 at thirty degree-s -or at another angle of inclination.

I have found that the most preferable main dimensions for my device are a length of seven feet of each of the posts 3, a distance of twelve inches from the upper ends of the posts 3 to the bolt 30, and a horizontal distance Iof -twelve inches from `the bolt 30 to the pivot point '27.

`Since certain change-s may be made in the above article and different embodiments .of the invention could :be made without departing from the scope thereof, it is intended that all matter contained in the above description or shown in the accompanying drawing shall be interpreted as illustrative and not in a limiting sense.

It is also to be understood that the following claim is intended to cover all of the generic and specific features of the invention herein described, and :all statements of the scope of the invention which as a matter of language migfht be said to fall therebetween.

Having thus fully described my said invention, what I claim as new and desire to secure by Letters Patent is:

A portable lean-to scaffold comprising a pair of upward-ly inclined posts of a triple U-shaped cross-sectional formation having each a lirst longitudinal groove with a perforated web portion on one web side and ya pair of second longitudinal lgrooves on the other side, a pair of longitudinal bracket base members having upper and lower portions and Ibeing of cross-sectional U-shaped formation each having a perforated web portion adjacent lthe inner side of the web porti-on of the rst longitudinal groove of a post and having also ange portions protruding beyond the iirst longitudinal groove of each post, a screw extending through the web portions of said bracket base member and of said first longitudinal groove of each post, a horizontal member having one of its ends adjustably and pivotably mounted on the upper end portion of the llange portions of each bracket base member, an upwardly inclined brace member having an Iupper extremity pivotably secured to the other end o-f each horizontal member and having its lower extremity pivo'tably and adjustab'ly secured to :the lower ange portions of the base member, .and Ia horizontal platform member supported by said horizontal members.

References Cited by the Examiner UNITED STATES PATENTS 510, 194 I12/ 93 Sellers 182-121 9 66,852 8/ 10 Norton 182- 121 1,031,1110 7/'12 Forsyth 182-4134 1,104,996 7/:14 McHale 248-238 3,0985 40 7/ 63 Hiner 182--152 FOREIGN PATENTS `17,401 3/ 82 Germany.

HARRISON R. MOSELEY, Primary Examiner.