US400704A - Truss-bridge - Google Patents

Description

, 2 Sheets-Sheet 1. J. W} PAISLEY. TRUSS BRIDGE.

(No Model.)

Patented Apr. 2, 1889.

(No Model.) 2 Sheets-Sheet 2. J-. W. PAISLEY.

TRUSS BRIDGE.

No. 400,704. Patented Apr. 2, 1889.

'IlII/IIIII/ N. PETERS. PhuQo-Lill logmphcr. Walhillghm D.-C.

UNITED STATES PATENT OFFICE.

JOHN IV. PAISLEY, OF EAST RANDOLPH, NEIV YORK.

'l'RUSS-BRIDGE.

SPECIFICATION forming part of Letters Patent No. 400,704, datedApril 2, 1889.

Application filed October 23,1888. Serial ITO-288,905. (No model.) i

To all whom it may concern Be it known that 1, JOHN IV. PAISLEY, a

citizen of the United States, residing at East verse section. Fig. sectional view.

Referring to the drawings by letter, A designates a series of tubular columns of suitable height and thickness, and adapted to be secured at their lower ends in the ground, as

shown in Fig. 1. Any number of these columns can be used, according to the size of the bridge, and the intermediate columns are provided at their upper ends with the elbows B, to and between which the longitudinal tubular metallic beams C are secured. The columns at the ends of each series are provided at their upper ends with couplings D, having lateral arms D, and the side longitudinal beams, E, are secured to and extend between the inwardly-projecting portions of these couplings. In the upper ends of these couplings I secure the lower ends of the vertical tubular standards F, and to the upper ends of said standards I secure the elbows G, as shown, to and between which I secure the tubular rails II.

I designates a brace having its central portion resting against the under side of the tubular rail, at the center of the same, and its ends secured to the couplings D.

J designates a tubular cross-bar which is arranged beneath the longitudinal beams, at about the centers of the same, and K designates a securing rod or boltwhich is inserted vertically through the rail H, the brace I, the side beam E, andthe cross-bar J at their respective points of intersection. The crossbar is thus secured at its ends to the side longitudinal beams, and the rail and the bent centers. The floor L of the bridge is laid upon the beams C and E, and is secured there on by means of the longitudinal boards M, secured to the upper sides of the planks composing the floor, at the ends of the same, and also by the boards N, secured to the ends of the floor and bearing against the upper ends of the columns A.

From the foregoing description it will be seen that I have provided a bridge which is simple in its construction and which is open in the arrangement of its parts, so as to present little orno obstruction to the stream flowing beneath it.

It will be observed that the bridge is composed mainly of metallic tubes, so that great strength is acquired without giving the bridge a heavy weight or clumsy appearance. Furthermore, the bridge being constructed almost entirely of metallic tubes, is not liable to be seton fire, as is the case when inflammable 'substance'ssuch as wood-are employed.

Any number of the spans may be used, it be ing only necessary, in order to increase the length of the'bridge, to increase the number of arms of the couplings. The rails and beams of the adjacent span can then be readily secured to the columns and the standards, and the bridge continued to the desired length.

Having thus described my invention, what I claim, and desire to secure by Letters Patent,

1. The combination of the columns A, the couplings at the upper ends of some of the said columns, the elbows at the upper ends ofthe remaining columns, the tubular beams secured to and between said couplings and elbows, the standards secured to the couplings,

brace are. securely fastened together at their the said standards being tubular, the elbows at the upper ends of the standards, and the tubular rails secured to and between said elbows, as set forth.

2. The combination of the tubular columns, the tubular beams secured to and between the upper ends of the columns, the tubular standards projecting upward from the outer columns, the tubular rails secured to and between saidstandards, the tubular crossbar arranged beneath the beams at the centers of the same, the tubular braces, and the securing-rods inserted through the rails, the braces, the outer beams, and the ends of. the cross bar, as set forth.

In a bridge, the metallic columns A, of any desired number, the standards secured to and above the end columns, the longitudinal metallicbcams C, secured to the intermediate columns A, the side longitudinal beams, E, secured to the end columns A, the metallic rails H, secured to the upper ends of the standards secured on the end columns A, and the cross-bar J, suspended from the rails II and arranged transversely across beneath the longitudinal beams, as set forth.

4. In a bridge, the metallic columns A. of any desired number, the standards secured to and above the end columns, the longitudinal metallic beams C, secured to the intermediate JOHN W. PAlSLEY.

\Yitnesses:

I. ll. Sweans, E" G. Stecuns.

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