US2560123A - Window scaffold - Google Patents

Description

Jul 10, 1951 s. M. MOATS WINDOW SCAFFOLD Fil ed Jan. 24, 1950 am Z 4 3.11M. w n s u Patented July 10, 1951 UNITED STATES" PATENT OFFICE WINDOW SCA FFOLD Scott M. Moats, Columbus, Ohio Application January 24, 1950, Serial No. 140,255

This invention relates to scaffolds of the type adapted to be extended through windows and supported-from the inside of the window, and in 1 Claim. o1. 304-47) particular a platform having rolled edges with an upwardly extended flange on the outer-end and a downwardly extended flange on the inner end and in which the platform which is provided with a back rail positioned above the outer end is suspended by rods from a tube extended across the inner surface of a window frame.

This invention is an improvement over the window scaffold of my co-pending application filed July 2'7, 1948 with the serial Number 40,805 in that the platform is provided with flanges on the ends that provide connecting means for the back rail and facilitate connecting the inner end of the brace below the platform to the side bars with offset eyes on the upper ends.

Various types of scaffolds have been provided for use from windows and the like but it has been found difficult to provide a scafi'old that one person may install in a window in which a platform is rigidly supported. With this thought in mind this invention contemplates a plate providing a platform in which the edges are rolled over side bars and in which the ends are reinforced by flanges with the flange at the outer end providing attaching means for a back rail and in Which the inner end of a supporting brace below the platform is connected to the side bars with struts having offset upper ends and also in which .the offset upper ends are provided with eyes that provide attaching means for diagonal braces that support the back rail.

The object of this invention is, therefore, to provide an improved window scaffold in which a comparatively light weight platform is reinforced and rigidly supported by bars and braces wherein the platform is suspended from the inner surface of a window frame and supported so that it may be used by a workman with absolute safety.

Another object of the invention is to provide a window scaffold having a reinforced platform in which the platform is adapted to be moved through a window and suspended from the inner surface of the window by the average layman.

A further object of the invention is to provide an improved window scaffold having a reinforced and rigidly supported platform which is of a simple and economical construction.

Other features and advantages of the invention will appear from the following description taken in connection with the drawings wherein:

Figure 1 is a view illustrating the general construction and arrangement of the scaffold.

Figure 2 is a side elevational view of .the scaffold showing the scaffold suspended through a window with the window frame and wall shown in section.

Figure 3 is a vertical longitudinally extended section through the scaffold taken on line 3 .3 of Figure 1.

Figure 4 is a plan View of the scaffold.

Figure 5 is an end elevational view looking toward the inner end of the scaffold.

Referring now to the drawings wherein 'like reference characters denote corresponding parts the improved window scaffold of this invention includes a platform I0, side bars I l and I2, a back rail I3 and a supporting brace having side bars I 4 and I5 connected, at their inner ends by an arcuate bar [6 and having struts l1 and i8 extended upwardly and spaced from the inner ends.

The platform in is provided with rolled edges l9 and 20 that are rolled around the side bars H and I2, respectively, and theinner end is provided with a downwardly extended flange 2| that provides reinforcing therefor. The outer end of the platform is provided with an upwardly extended flange 22, the upper edge of which is folded over providing an inner section 23 and openings 24 and 25 are provided through the flange 22 and section 23, through which hooks 26 and 21 on the lower ends of vertically disposed rods 28 and 29, respectively, are freely positioned.

The upper ends of the rods 28 and 29 are provided with eyes 3!] and 3! respectively through which eyes 32 and 33 on the upper ends of diagonal braces 34 and 35 are positioned, and the ends of the material forming the eyes 30 and 3| extends across forming the back rail l3.

The braces 34 and 35 are provided with outwardly extended 'ends 36 and 31 that extend through eyes 38 and 39, respectively on offset sections 40 and 4| of the struts l1 and I8. The ends 36 and 31 are temporarily retained in the eyes 38 and 39 by pins 42 and 43.

The offset sections 4!! and M of the struts l1 and 18 are secured, by welding to the side bars H and I2, the ends of which extend from the platform l0 so that they may extend through a window or the like. The outer ends of the side bars I l and I2 are bent downwardly to form the side bars I4 and is of the supporting brace and the struts l1 and I8 extend upwardly from the upper surfaces of the side bars of the brace.

The extended ends 44 and 45 of the side bars II and I2, respectively are threaded and the threaded ends extend through openings in a tube 46 that extends across and is positioned 3 against the inner surface of a window frame 41. The side bars are adjustably secured in position by nuts 48 and, as illustrated in Figure 2, the inner ends of the support braces bear against an outer panel 49 of the window frame.

With the parts arranged in this manner the window scaffold which includes a plate forming a platform as indicated by the numeral ID with supporting rods and a back rail may be moved outwardly through a window and with the inner ends of the side bars H and I2 held to the tube 46 the scaffold may be positively supported from the inner surface of the window. The scaffold may be used with absolute safety and after use it may be withdrawn through the window.

It will be understood that modifications may be made in the design and arrangement of the parts without departing from the spirit of th invention.

What is claimed is:

A window scaffold comprising a platform having rolled edges with an upwardly extended flange on the outer end and a downwardly extended flange on the inner end, side bars having threaded inner ends extended through the rolled edges of the platform, a back rail having downwardly extended rods at the ends positioned above the outer end of the platform and with hooks on the lower ends of the rods positioned in openings in the flange on the outer end of the platform, a tube extended across the platform and through which the threaded ends of the side bars extend, nuts on the said inner ends of the side bars, and a U-shaped supporting brace positioned below the platform having side bars extended from the outer ends of the side bars extended through the rolled edges of the platform and with the inner ends of the side bars of the brace connected by an arcuate bar, and struts having eyes on offset upper ends connecting the inner ends of the side bars of the brace to the side bars of the platform, and diagonally positioned braces extended from the eyes of the struts to the end of the back rail for supporting the back rail from the inner end of the platform.

SCOTT M. MOATS.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS 25 Number Name Date 353,768 Trafton Dec. 7, 1886 478,177 Thomson July 5, 1892 1,006,337 Zahn Oct. 17, 1911 1,664,470 Trigonis Apr. 3, 1928

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