US760995A - Platform or staging support. - Google Patents

Description

No. 760,995. PATENTED MAY 24, 1904.

S. G. JOHNSON. PLATFORM 0R STAGING SUPPORT.

APPLICATION FILED D110. 31. 1902.

N0 MODEL.

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UNITED STATES Patented. May 24, 1904.

SIMON C. JOHNSON, OF DEKALB, ILLINOIS.

PLATFORM on STAGING SUPPORT.

SPECIFICATION forming part of Letters Patent No. 760,995, dated May 24, 1904;.

Application filed December 31, 1902. Serial No. 137,357. No model.) i

. To all whom it may concern:

Be it known thatI, SIMON C. J oHNsoN,a citizen of the United States, residing at Dekalb,

in the county of Dekalb and State of Illinois,

have invented a new and useful Platform or Staging Support, of which the following is a specification.

The present invention relates particularly to supporting means for temporary staging or platforms employed in the erection of the projecting portions of chimneys, though useful for various other purposes, as will be evident to those skilled in the art.

It is the object of this invention to provide a structure which is placed upon a roof and is adjustable to various degrees of inclination and differentdistances from the ridge, so that the platform or staging may be located in the most convenient place with relation to the chimney being built and at the same time be supported in a horizontal position.

It is also the aim to obtain a structure which is extremely strong and rigid and at the same time light and capable of being compactly folded. V

The preferred embodiment of the invention is illustrated in the accompanying drawings and is described in the following specification. It will be seen, however, upon an inspection of the claims hereto appended that the structure shown and described is open to various changes and modifications.

In the'drawings, Figure 1 is a perspective view of the improved support. Fig. 2 is a detail perspective view of one of the sections.

of the hanger member. Fig. 3 is a cross-sectional view through the hanger member, and Fig. at is a detail cross-sectional View taken on the line 50 m of Fig. 1.

Similar reference-numerals indicate corresponding parts in all the figures of the drawings.

'- In the embodiment shown-the structure comprises as a whole a hanger member, a supporting member, and a platform member. The hanger member comprises a lower and an upper section, these sections being slidably associated and constructed in the following manner: The lower member consists of spaced side bars 10, formed of angle-iron, the outer flanges of which are arranged vertically,-the inner flanges extending toward each other,thus forming guideways. These side bars 10 are fastened at their lower ends to a transverselydisposed base-arm 1 1, also formed of angle-iron and extending well beyond the sides of the structure forming a broad base,as will be readily seen. The upper section ofthe hanger member is in the form of a substantially U-shaped frame 12, also formed of angle-iron, the side bars 13 slidably engaging in the guideways formed by the flanges of the side bars 10 and being connected at their lower ends by the crosspiece 14. The upper ends of the side bars 13 are provided with depending hooks 15, which are arranged to engage over the ridge of a roof, as indicated in Fig. 1. The side bars 13 are, furthermore, held in their parallel relation by diagonally-disposed cross-braces 16, suitably secured at their ends to said bars. The two sections of the hanger element are normally held against relative movement by a bolt 17, arranged at the upper end of the lower section, this bolt passing through the overlapping portions of the side bars, those of one section (in this instance the upper one) being provided with a plurality of openings 18, through which the bolt may be passed, so that the sections may be fastened in different rela- .tive positions.

The supporting member of the structure is in the form of an inverted-U-shaped frame 19, also formed of angle-iron, thereby forming spaced standards 20, which are pivoted attheir lower ends to the side bars 10 by suitable rivets 21 or other fastening devices.

One of these pivotal -connections is clearly illustrated in Fig. 4. It will be observed that alined openings are formed through the upstanding flange of the side bar 10 and the adjacent flange of the standard. A sleeve 22 is passed through these alined openings, and the rivet 21 extends through the sleeve and is headed over the ends of the same and the adjacent portions of the side bar and stand- The standards 20 are connected at their IOO lower ends of which constitute shoulders, as will be readily understood. These standards are, furthermore, made rigidby diagonallydisposed braces 25. The platform member consists of spaced supporting-bars 26, pivoted at their inner ends to the upper ends of the side bars 10, their outer ends having depending hooks 27, arranged to be passed through the openings 24 of the standards, these supporting-bars being strengthened and braced by tie-rods 28.

It will be understood that in use a number of these structures are employed, which are located on opposite sides of the chimney and preferably on opposite sides of the ridge of the roof. The hooks are engaged over the ridge in the manner indicated in Fig. 1, and the hanger member is elongated, so that the platform-support will be in proper position with relation to the chimney being built. The supporting-arms are then placed in horizontal position and supported there by engaging the hooks in the proper openingsof the standards. As a result a strong support is provided which will notaccidentally collapse, it being understood, of course,.that the boards are'laid upon the platform member.

It will be apparent that this structure is both light and strong, so that it may be easily placed in position and when not wanted can be collapsed and compactly folded. Furthermore, it is adjustable to suit the various requirements of the work, and while described particularly for the purpose of building chimneys it will be evident that it may be employed for other purposes.

From the foregoing it is thought that the construction, operation, and many advantages of the. herein-described invention will be apparent to those skilled in the art without further description, and it will be understood that various changes in the size, shape, proportion, and minor details of construction may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention.

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

1. In a structure of the class described, the combination with an inclined member, of a supporting member including spaced standards pivoted at their lower ends to the inclined member and consisting of angle-iron, certain of the flanges of which are disposed transversely of the inclined member and have a vertical series of openings therethrough, and a platform member pivoted to the inclined member and having downturned hooks at its free end that engage in the openings of the standards.

-2. In a structure of the class described, the combination with an inclined member, of a supporting member consisting of a bar bent to form spaced standards connected at their upper ends and pivoted at their lower ends to the inclined member, said standards being provided with a longitudinally-disposed series of openings therethrough, and a platform member hinged to the upper portion of the inclined member and comprising spaced bars having downturned hooks at their free ends that respectively pass through the openings in the standards and engage over the outer faces thereof.

3. In a structure of the class'described, the combination with an inclined member comprising spaced side bars, of a supporting member consisting of an angle-bar bent to form spaced standards connected at their upper ends and pivoted at their lower ends to the side bars of the inclined member, certain of the flanges of said standards being transversely disposed and provided with openings, and a supporting member comprising spaced side bars pivoted to the inclined member and having downturned terminal books that pass through the openings in the standards.

4. In a structure of the class described, the

combination with an inclined member comprising spaced side bars, of a transverse basearrn connecting and secured to the lower ends of the side bars and extending beyond the same, forming an extended base, an upright supporting member pivoted to the inclined member and having a vertical series of openings, and a platform member also pivoted to the inclined member and having a hook at its free end that detachably engages in the openings. I

5. In a structure of the class described, a hanger member comprising a lower and an upper section, said upper section consisting of a bar bent to form spaced side bars connected at their lower ends and having hooks at their upper ends, means for securing the sections against relative movement, and platform-supporting means carried by the lower section.

6. In a structure of the class described, a hanger member comprising a lower and an upper section, the lower section consisting of spaced angle-iron side bars, platform-supporting means arranged upon the lower section, the upper section being slidably associated with the lower section and comprising spaced side bars slidably arranged between the flanges of the side bars of the lower section, clownturned hooks arranged upon the upper ends of the side bars of the upper section, and

means passing through the several side bars for securing the sections against movement.

7. In a structure of the class described, a hanger member comprisinga lower and an upper section, the lower section consisting of spaced angle-iron side bars, platform-supporting means arranged upon the lower section,

the upper section being slidably associated with the lower section and comprising a substantially U-shaped frame of angle-iron, the spaced side bars of which are slidably aring member pivoted to the hanger member and having a vertical series of openings, and 5 a platform member also pivoted to the hanger member and having a downturned hook at its free end that is arranged to engage in the openings of the supporting member.

In testimony that I claim the foregoing as 20 my own I have hereto aflixed my signature in the presence of two Witnesses.

SIMON C. JOHNSON.

Witnesses:

BENJ. S. WHITE, GEORGE H. MILLER.

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