US3464518A - Scaffold structure - Google Patents

Description

Sept 969 J. J. STELOVICH 3,454,513

SCAFFOLD STRUCTURE Filed June 10, 1968' x K I 1 I w A I2 II OeeeoaO|aeeeoO FIG. 6

INVENTOR. JOSEPH J. STELOVI CH W? 7 @W/ffiy 7 HIS ATTORNEY 3,464,518 SCAFFOLD STRUCTURE Joseph J. Stelovich, 2366 Kensington Ave, Salt Lake City, Utah 84108 Filed June 10, 1968, Ser. No. 735,836 Int. Cl. E06c 7/16, 1/383; E04g l/18 U.S. Cl. 182-120 8 Claims ABSTRACT OF THE DISCLOSURE The present invention related to scaffolding structures and, more particularly, to a new and improved scaffold structure which is extensible both horizontally and vertically, this in a manner to permit the scaffold platform thereof to be adjusted both sideways and also vertically to provide a number of useful purposes.

In the past a great number of scaffolding structures have been developed. These generally take the form of multiple vertical legs. Many are formed of pipe enlarged tubing and extremely difficult and time-consuming to erect, haul and store. Additionally, scaffolds presently used are not characterized by adjustments, which are necessary in easily elevating or lowering the support platform or in allowing the same to be extended properly at different job sites.

Accordingly, a principal object of the present invention is to provide a new and improved scaffold structure.

A further object of the invention is to provide a new and improved scaffold wherein the same is extensible both laterally, or sideways, and also vertically.

An additional object is to rovide a scaffold structure and improved platform support which is extensible side ways and also vertically movable, up and down, as desired, along the remainder of the scaffold structure.

An additional object of the invention is to provide in a scaffold structure a leg support structure having plural extensions, the platform used in the structure being selectively and removably attachable to the leg structure both at and below the extensions thereof.

An additional object is to provide a scaffold structure in which the platform used therein is easily adjusted at various, vertically spaced, horizontal positions.

The features of the present invention which are believed to be novel are set forth with particularity in the appended claims. The present invention, both as to its organization and manner of operation, together with further objects and advantages thereof, may best be understood by reference to the following description, taken in connection with the accompanying drawings in which:

FIGURE 1 is partially cut away perspective View of scaffolding structure constructed in accordance with the principles of the present invention.

3,464,518 Patented Sept. 2, 1969 FIGURE 2 is a slightly enlarged, fragmentary view taken along the line 22 in FIGURE 2.

FIGURE 3 is a slightly enlarged, fragmentary view taken along line 33 in FIGURE 1.

FIGURE 4 is an enlarged horizontal section looking down and is taken along the line 44 in FIGURE 1.

FIGURE 5 illustrate the front leg structure of the scaffolding, is a horizontal section, and is taken along the line 55 in FIGURE 1.

FIGURE 6 is a front elevation of the scaffolding structure of FIGURE 1 wherein the same has been extended laterally.

FIGURE 7 is a section taken along line 7-7 in FIG- URE 1, wherein the scaffold structure has been folded for storing condition.

FIGURE 8 is an enlarged, fragmentary view, shown in section for convenience of illustration, and is similar to FIGURE 2 by illustrating alternate attachment means by which the platform support can be secured to the leg structure of the scaffold.

Scaffold 10 in FIGURE 1 is shown to include front legs 11 and 12 having front leg extensions 13 and 14. These members are preferably configured in the form of channels as indicated in FIGURES 1 and 5. The scaffold structure 10 also includes rear legs 15 and 16, each being provided with telescoping, slidable extensions 17 and 18. These likewise take the telescoping channels as illustrated in FIGURE 4. It will be understood that the construction in FIGURES 4 and 5 are typical of the remaining rear and front leg telescoping structures.

Links 19 and 20 are pivoted by pin means 21 and 22 to the upper portions of the telescoping extensions in the manner indicated in FIGURE 1. Front brace member 23 is pivoted by pivot means 24 to front leg 12, and front brace extension 25 is pivoted by pivot pin 26 to front leg 11. Extension 25 is provided with a plurality of holes 27, and member 23 is provided by a corresponding hole 28 and pin 2? for fixing the outward extension of the extension 25 relative to member 23. The pin 28 will engage both cooperating members through a selected hole 27. The rear base structure at 30 may correspond exactly to a composite structure 31 at forward portion of the scaffolding in FIGURE 1.

Platform 32 includes a platform member 33 and a platform extension 34 slidably disposed therewithin. This structure can take the form of a pair of inter-cooperating channels as is illustrated in FIGURES 2 and 8, for example. L-configured platform supports 35 and 36 are provided. These supports 35 and 36 are secured by conventional means such as rivets to platform member 33 and platform extension 32, respectively. See FIGURE 2 and note conjoint use of rivets 37 and 38. The inner ends of platforms supports 35 and 36 are configured outwardly at 39 and 40 and proceed through apertures 41 and 42 of upper portions of the extensions 13 and 14. Cotter pins at C are disposed through apertures A in these outer extremities to fix the securement of platform supports 35 and 36 in the manner indicated. Platform support braces 47 and 48 have their extremities configured as shown at 49, 50, and also at 51 and 52 to proceed through a selected one of apertures E and F disposed in legs 11 and 12. The outer extremities 49 and 50 are disposed through apertures G and H of the platform supports.

FIGURE 8 illustrates a modified construction wherein the platform member 33 and extension 34 are supported at opposite extremities, relative to the structure of FIG- URE 1, by integral brackets 50, 50' which include respective hook-configured protuberances 51 and upper extensions 52 integral therewith. It will be noted relative to FIGURE 8 that the platform may be easily removed from the leg structures by tilting upwardly in a direction of arrow G. This enables the hook protuberance to slip out of aligned apertures R of the leg structure. It will be understood that one bracket 50 will be secured to platform member 33 wherein a remaining bracket, indicated in dotted lines will be secured to platform extension 34.

FIGURE 7 is a section illustrating the structure of FIGURE 1 being folded together.

In FIGURE 1 it is observed that the front and rear legs are braced by brace means 54. This preferably takes the form of horizontal, channel base members 55 and 56 which telescopingly receive members 57 and 58. The latter includes an upper stop tab 59 in a conventional manner. Pins 60 and 61 serve to fixedly secure the respectively telescoping members together in the manner indicated. This is provided through holes, not shown, in members 57 and 58, and in through apertures 62 and 63 of members 55 and 56. The same construction is typical on both sides of the scaffold structure. Thus, the side base structure is typical on both sides of the scaffold structure.

The structure as described operates as follows. It will be noted in FIGURE 1, relative to the scaffolding structure 10, that by virtue of the telescoping nature of the braces at 29 and 30 the structure can be elongated or extended sideways. Additionally, and by virtue of the telescoping nature of leg extensions 13, 17, 14 and 13 relative to the front and rear legs, it will be observed that the structure can be elevated or lowered, as desired. Fixed attachment of the scaffolding for any type of telescopic realignment can be made through the use of pins as at 29 relative to the lower forward brace of the structure. When the structure is to be extended vertically and, assuming that a greater base support base area is needed, then the side braces at 54 may be elongated and pins 60 and 61 readjusted as needed. The pivotable connection to the links as at 19 accommodates not only vertical adjustment but also the spreading apart of the legs and readjustment of the side bases as at 54 as required. Platform 32 may be adjusted up and down the structure by simply readjusting the platform supports and their braces in the manner desired. This can be accomplished as illustrated in FIGURE 1; or, Where the hook configurement is employed as in FIGURE 8, then but a single operation is needed to adjust the platform support. Relative to FIGURE 8, the hook portion 51 and the metal thicknesses of the outer and inner legs will be so chosen that proper retention is enabled even though the step is mounted solely to the upper portions of the two leg extensions as at 13 and 14.

FIGURE 6 illustrates the platform as being supported in one position, i.e., see FIGURE 1. The phantom linecondition shown in FIGURE 6 illustrated the leg extensions as having been raised and the platform support as having been relocated, this time on the extensions proper and at a horizontal level spaced substantially above the prior location of the platform support 13.

For storage the support structure is easily disassembled from the scaffolding by pulling the cotter pins at C and removing the platform supports and their braces. If desired, the front end and rear braces can be separated and the two pivoted upwardly on their pivots as of 24 and 26 so as to achieve a convenient storage condition. Pivots at P accommodate the jack knifing of the side bases as at 54 so that the structure can be folded for stored condition as illustrated in FIGURE 7.

The present invention is thus provided a scaffolding which is extensible both sideways and vertically. The support scaffold includes the platform extension 34 which is also extensible so as to accommodate extension of the scaffolding structure sideways. Respective multiplicities of holes are provided the leg structures so that pins as at 65 and 65' may secure the extensions in their extended conditions relative to the legs.

If desired, the pivots as at P and 22, for example, may be nut-bolt attachments which may be releasable so as to permit the removal of the rear legs. Or, even with the rear legs attached, the combined structure may be jack-knified underneath the forward legs so that the platform extensions can simply be tilted to rest against the side of a building.

What the invention provides, hence, is a scaffolding structure having a vertically adjustable platform which is also extensible sideways. The platform can be used in the center of a room, for example, for a workman painting or refinishing a ceiling. Alternatively, the scaffolding can be used on the outside of a building and even folded (or otherwise having the rear legs dispose out of the way) so that the scaffolding can rest in an angulated condition directly against the side of a building, for support.

While particular embodiments of the present invention have been shown and described, it will be obvious to those skilled in the art that changes and modifications may be made without departing from this invention in its broader aspects, and, therefore, the aim in the appended claims is to cover all such changes and modifications as fall within the true spirit and scope of this invention.

I claim:

1. A scaffold including, in combination, plural, front and rear, respectively horizontally-adjustably spaced leg means having adjustable and releasably afiixable extension means, brace means for bracing said front and rear leg means, means for adjusting the extension of said extension means, means for securing corresponding ones of said extension means of said front and rear leg means together, horizontal platform means, and means for securing said horizontal platform means to said leg means in one of a number of height dispositions, said horizon tal platform means including an extensible and retractable extension to accommodate variations in horizontal spacing between said leg means.

2. Structure according to claim 1 wherein said leg means include mutually spaced apertures, said horizontal platform means. including means releasably engaging selected ones of said apertures for positioning and supporting said horizontal platform means at a given height level.

3. A scaffold including, in combination, front and rear leg means having adjustable and releasably afiixable extension means, brace means for bracing said front and rear leg means, means for adjusting the extension of said extension means, means for pivotably securing corresponding ones of said extension means of said front and rear leg means together, horizontal platform means, and means for securing said horizontal platform means, to said leg means in one of a number of height dispositions and wherein said front and rear leg means comprise front and rear legs telescopingly receiving respective extensions, said extensions comprising said extension means, said legs and extensions being provided with respective pluralities of mutually spaced apertures, and the said platform means including means for engaging chosen ones of said apertures.

4. Structure according to claim 3 wherein said platform means is constructed for length adjustment.

5. Structure according to claim 3 wherein said platform means includes supporting brace means releasably secured to said leg means.

6. Structure according to claim 5 wherein said brace means also engages selected ones of said apertures.

7. In combination, a pair of horizontally-variablyspaced, vertical side support means, adjustable-length 5 6 brace means secured to and between said vertical side References Cited support means, and adjustable-length platform means UNITED STATES PATENTS releasably secured to and between said vertical side support means in one of a number of selectable height dispo- 1 Z23 2? 5 2,599,976 6/1952 Carlson 182120 8. Structure according to claim 7 wherein each of said vertical side support means includes a plurality of mu- REINALDO P M ACH ADO, Primary Examiner tually spaced apertures, said platform means including positioning and supporting means at its opposite ends Us ()1 X R engaging selected ones of said apertures. 10 182 233, 184, 176

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