US85171A - Edward m - Google Patents

Description

ithdt i tant EDWARD ll/I.` GRANT, OF MACON, GEORGIA.

v Lette/rs Patent No. 85,171, dated December 22, 1868. I

WRoUGHT-IRQN BRIDGE-PIER.

The Schedule referred to in these Letters Patent andA making part; of the samer Figures 2, 3, 4, and 5 represent details ofconstruc This invention has for its object the construction of a simple, strong, cheap, and durable iron pier,l for bridges and other lofty structures.

The pier is builtin sections`,fA B O, the construc tion of the lower section being shown at A, that of the upper section at B, and that of the intermediate sections at C. f Y

The number of intermediate sections will be determined by the height and strength required in the pier. The wholel rests upon a heavy course of masonry, supported by and connected. -with thensual foundation of rock or crib-work, filled with concrete on the inside, even with the upper surface of the masonry, and Well riprapped on the outside.

The pier consists of twelve wrought-iron columns, '1l d, arranged, six on each side, and braced, supported, and connected, as shown in iig. 1.

The twelve columns are of the pattern known as the .Plnnnix patent, manufactured at Phoenixville, Pennsylvania, the general nature of which may be seen from figs. 2, 4, and 5.

D is a cast-iron plate, extending around the top of the course of masonry, three inches thick by nine wide, bolted to the rock by bolts Well leaded into the' stone.

The lower ends of the columns, in the' bottom section, are fastened by bolts, passing through this' plate into the rook, and firmly fastened therein.

The columns are furnished with cast-iron caps, /E.E, fastened to them by small bolts.

Between each ofthe sections there is a system of lateral bracing, consisting of a cast-iron plate, Mfthree inches by nine, trussed with cast-iron braces, m m, and' heavy wrought-iron rods, m m.

Bolts, 'i'. i, pass through the plates M, and through the caps of the columns, above and below each section, thus securing the columns together into one continuous system, from the top to the bottom ofthe pier.

The columns have a batter, of from one inch to one foot, in both lateral and longitudinal directions of the pier, and are firmly braced and tied together by wrought iron stays, s s, bolted-to them, as sh'ownln fig. 5, the cast-iron pieces o o affording the requlslte Vmeans of contact between the stays and the columns.

in section A there are eight pairs of stays to each side ofthe pier; in section C, six pairs; and, 1n sec- -lion B, only two pairs.

The relative length of these stays, and their points of contact with the horizontal cast-iron plates, and with the columns, are clearly shown in iig. 1.

The ends of each section (except, in some cases, section A) are braced by diagonal stays, F F, arranged in pairs,rand each pair strengthened by the bracing shown at c e, iig. 1. f

The bridge-seat M' is of'cast-iron, bolted to the tops of the upper columns. The inner columns of the upper section diverge, as seen in tig. 1, so as to be concentrated under each chord of the superstructure, thus consolidating the strength under the pressure, and, at

upper portion of the pier.

Q is a heavy wrought-iron column, standing out from the upper end of section A as a cut-water or ice-break.

n n are wrought-iron bars, four inches Wide and oneto the columns in the same manner as the stays.

This sheathing prevents any tloating substance from injuring the pier, and acts as a Very efficient bracing. It extends above high-water line7 of the stream.

Having-thus described my invention,

. What I claim as new, and desire to secure by Letters Patent, is-

1. The lower section A, when constructed with the Phoenix-patent columns d d, the plates DM, the stays s s, the wrought-iron straps a a, the inclined column Q, the'caps E E, and the cast-iron plates o o, all constructed, arranged, and bolted together inthe manner described.

2. The upper section B, when constructcdwith the columns d ll, inclined as described and shown; the cast-iron plates M M', the stays s s and F F, the latter strengthened by the braces c c the caps E E; and the cast-iron plates o o all constructed, arranged, and connected together in the manner described.

3. The intermediate sections C O, when constructed with the columnsd d, plates M M, stays s s F F, braces e c, caps E E, plates o 0, and trusses fm my', all constructed, arranged, and combined in the manner and for the purpose specified.

4. The described arrangement of sections A B C, when severally constructed and connected in the manner described, so as to form a single pier.

5. In any pier, the use of Wrought-iron straps 'n n, and iron columns d d Q, arranged as described, and bolted together, the straps extending around the front from floating ice, drift-wood, Btc. Y

6. The described method of attaching the stays to tion of the stays s s, columns d d, iron plates o o, and bolts 0' fr, substantially as shown and specified.

have signed my hand, this 8th day of September, 1868. Witnesses: FJDVVARD M. GRANT.

J No. BAsKn-rfrn, J. H. BURKE.

the same time, 'adding greatly to the rigidity of the Y half an inch thick, placed three inches apart, and bolted and sides of the pier, for the purpose of protecting it the columns, to wit, the arrangement and combina- To the above specification of my improvement, l

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