US91125A - Improvement in the manufacture of wrought-iron columns - Google Patents

Description

@sind @titille vGllORGl. HALSTEAD, OF BUFFALO, NEW YORI.

Letters Patent No. 91,125, dated June 8, 1869.

IMPROVEMENT IN THE MANUFACTURE OF WROUG-HT-IRQN COLUMNS.

The Schedule referred to in these Letters Patent and making part of the same.

To ull whom it may concern Be it known that I, GEORGE HALSTEAD, of the city of' Buialo, county of Erie, and State of New York, have invented a certain Improved Wrought- Iron Column; and I do hereby declare that the following is a full, clear, and exact description thereof', reference being had to the accompanying drawings, making a part of this speciiication.

The nature of my invention consist's-in constructing cylindrical columns, by the combination of beaded segmental plates, riveted together on longitudinal lines, with flush joints, formed by rebating one edge of each plate to receive the lapping edge of the adjacent plate, the joint being. covered'by a separate bead through which the joint-rivets pass.

In the accompanying 4drawings- Figure 1 is a perspective view of my said improved column.

Figure 2 is a cross-section thereof. l

Like letters refer to like parts in both figures.

A represents the segmental plates, in length equal to the required length of the column, and curved in cross-section to a radius coincident to that of the column, their width, less the required lap for the joints, being an even divisor of the circumference of the column, so that when two, three, or more plates, as the case may be, are brought together, they will form a complete cylinder.

The number of the plates above two will be governed by the size of the column and the convenience ofzrolling. A

One edge of each plate is formed with a rebate, as shown at l), to receive the lapping edge of the plate, and makes a flush joint, the plates being secured together by radial rivet-s c, passing through both of the lapped edges.

A longitudinal bead, (l, is applied to and covers the joint, the rivets c passing through the bead, with countersunk heads upon the outside.

The beads may be half-round, square, or Gothic, in cross-section, and additional beads, e, may be formed upon the plates where they are rolled, so that a tine, finish may be given to the column.

These beads will also add strength and stiffness to the column.

The plates may be rolled to the required curvation in the iirst instance, or they may be made flat, and subsequently curved, as may be preferred.

Having thus described my invention,

What I claim, and desire to secure by Letters Patent, is

The improved column or shaft herein described and shown, composed of the beaded and rebated segmental plates A and bead-like battens d, joined one to the other, and united by rivets or bolts, in the manner set forth.

GEORGE HALSTEAD.

Witnesses W. H. FOEBUsH, V. H. BECKER.

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