US412397A

US412397A - Column

Info

Publication number: US412397A
Authority: US
Publication date: 1889-10-08
Anticipated expiration: 1906-10-08

Description

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` UNITED STATES PATENT OFFICE.

WILLIAIWI J. LEE, OF TRENTON, YNEW JERSEY.

COLUMN, sTRuT, GIRDER, sbc.

SPECIFICATION forming part of lLetters Patent No. 412,397, dated October 8, 1889.

V Application filed May 10, 1889. Serial No. 310,340. (N model.)

Be it known that I, WILLIAM J. LEE, a citizen of theUnited States, residing at Trenton, in the county of Mercer and State of New Jersey, have invented anew and useful Column, Strut, Girder, or Similar Structure, of which the following is a specification, reference being had to the accompanying drawings, forrnin g part thereof.

The object of my invention is to form a column (for use principally in bridges, as a chord-piece, post, or strut, but which maybe used for other purposes) which will possess the following distinctive features: first, to be accessible tothe inside for painting or other` purposes; second, to be substantially rectangular in form, having at least two sides, which are straight for a considerable portion of their cross-sectional surface and parallel or nearly parallel to each other, third, all the shapes forming the column to be fastened together by means of rivets or bolts and washers, or similar contrivances, without the use of batten-plates or lattice-bars. I accomplish these objects bya combination of shapes in such a manner that one or more sides of the column or similar structure are leftopen far enough for access to the inside for painting or other purposes, while at the same time anges project in such a Inanner that the shapes forming the column 'can be securely fastened together by means of rivets or bolts and washers, or similar contrivances.

A convenient method of arranging the material is shown in Figure 1, which is a drawing of a column formedv of the plate a and the Z-shaped bars b, riveted, bolted, or otherwise fastened together, as shown, c being a washer.

Another arrangement is shown in Fig. 3, which is a drawing of a column formed of the plate a, the Z-shaped bars b, andthe anglebars d, c being a washer.

Still another arrangement is shown in Fig. 4., which is a combination of the plate a., the Z-shaped bars b, and the angle-bars d, c being a washer. l

Fig. 2 is a drawing of the Z-shaped bar.

Fig. 5 shows a convenient connection of the web members to the top chord in a pinconnected bridge, by which will be. seen the great advantage lpossessed by this form of column over any other form of column used for this purpose. The ianged bars need not necessarily be solid rolled bars. For example, the angle-bars may be constructed by riveting together a plate andasmaller anglebar, and the Z bars may be constructed by riveting together a plate and two angle-bars, or by riveting together two angle-bars. It is not necessary that the column be perfectly rectangular in form. For example, in Fig. l it is apparent that the angleformed by the intersection of the flanges of the Z-shaped bars bwith the web of the same maybe other than a right angle, thus forming a column polygonal in form; or, in Figs. 3 and 4., the plate a, may be vcurved or otherwise bent, or any other changesvof a similar nature may be made without departing from the principle of the invention.

It is very important that the inside of a column, strut, girder, or similar structure used in a bridge or other. exposed position be accessible for painting, because if the iron or .steel (the metals generally used) is not frequently repainted it rusts and deteriorates very rapidly. The lattice -bars or battenplates, which are generally used to connect together the different parts of columnswhich are accessible to the inside, form a considerable portionof the weight of the column and add nothing to its effective section; hence it is apparent that a column which does not require lattice-bars or batten-'plates, and which is accessible to the inside, is a great improvement over a column which does require lattice-bars or batten-plates.

In a chord, post, or strut of a bridge it is -important that at least two sides of the section should be straight for a considerable portion of their cross-sectional surface, and parallel or nearly parallel to each other, so that secure connections maybe conveniently made.

It will be understood that l do not limit myself to the precise details herein described, as the same may be varied without departure from the principle of my invention.

Whatl claim as my invention, and desire to secure by Letters Patent, is-im l. A metallic column, strut, girder, or similarv structure substantially rectangular in form, having one or more partly-open sides ICO formed of flanged bars arranged with flanges in form, one or more sides thereof constructed projecting so that they may be fastened toof angle or Z-shaped bars with flanges placed 1o gether by means of rivets o1; bolts and Washback to back.

ers o1- similar contrivances without the use of 1 lattice-bars or batten-plates, substantially as WM' J' LEP* shown and described. Witnesses:

2. In a metallic column, strut, girder', or JOHN LEE, similar structure substantially rectangular JOHN N. LEE.