US137552A - Improvement in elevated arch railways - Google Patents

Description

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Elevated Arch Railways.

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AM PHoTaAL/moRAPH/c co, All (oseamva's moes-ss) A'rEN'r EDWIN JAMES HULBERT AND AIM NICHOLAS NAPOLEON AUBIN ,.OF PORTLAND, CONNECTICUT.

IMPROVEMENT IN ELEVATED ARCH RAILWAVS.

Specification forming part of Letters Patent No. 137,552, dated April 8, 1873; application filed March 25, 1872.

To all whom it may concern: y

Be' it known that we, EDWIN JAMES HUL- BERT and AIME NICHOLAS NAPOLEON AUBIN, of Portland, in the county of Middlesex and State of Connecticut, have invented certain Improvements in Elevated Arch Railways, of which the following is a specification:

The nature of our invention relates to the construction of arches which extend across the street and support the elevated railway; and it consists in the combination and arrangement of the arches, transverse binding-girders, stiftening-brackets, and vertical braces to support the suspension and guiding rails.

The drawing N o. l represents a front eleva tion, as seen from the center of the street, of one ofthe arches intended to span, from curb to curb, the streets along which the elevated railroads are to run. It shows the mode of suspension of the tracks and cars; also the arrangement of the platforms and stairs for passengers, street-lamps, telegraph wires, pneumatic tubes, Ste. The drawing No. 2 represents the arches as seen from the sidewalk 5 also the mode of suspending cars.

A A is the body of the arch. It is composed of segments of wrought-iron rolled in plates, the section of which is shown at al, by which it will be seen that the flange intended to be inside of the curve of the arch is shorter than the other, which forms one-half of the surface of the peripheryT of the arch. These plates are firmly riveted or bolted together, crossing the joints so that when united their section presents the shape seen at a2. These arches can be placed at intervals to suit convenience, and may be distant from each other from fifteen to fty feet, more or less. They would rest upon cast or wrought iron base-plates supported by a foundation of masonry, or of metal cylinders or boxes filled with concrete. In wide streets the arches would form a semicirole butin very narrow ones, where only one or two tracks can find room, the arch can be elliptical, so asto Obtain sufficient height for the tracks above the roadway. B B is a girder thrown across from one leg of the arch to the other, performing the double part of supports for car-guides, and, if desired, of railway tracks, and of a main tie to the arch, preventing the spreading apart of its side segments; C C, castiron ornaments fixed to the roof of the arch and at the ends of the cross-girder, to secure the perfect rigidity ofthe construction; DD D, supplementary girders placed between the arches, supported vertically from longitudinal girders d1 d1, and diagonally by rods from the arches d2 d2. (Drawing No. 2.) These bind the `arches together and support the tracks and cargnides. E E E E, upright bars, with shoulders e e e e e, bearing the tracks when cars are to be suspended. They also serve as stays and struts to keep the tie-girders B B in a perfectly straight line. to prevent the side oscillations of the cars when suspended, as shown. The inside tracks f1 fl can be used for rapid transit; the outside ones, fzfz, for local or slow cars. N, passenger-car, to be propelled by compressed air, steam, or other convenient power. n2 n2 are the suspending-wheels. They are grooved to the shape of the track a, and the bottom of the groove furnished with a semi-elastic band of India rubber, so as to deaden the noise which would result from the contact of a hard tire upon the metal rails. The tracks, wherever supported, are resting upon India-rubber cushions, to prevent the communication l of the vibrations of the rails to the other parts of the, structure. 'a3 a3, horizontal wheels, placed under the car to run against the angleiron guides to "prevent lthe side oscillations of the car; n4 n, rollers or wheels, running vertically to receive and sustain the car in case of the breaking of an upper wheel, axle, or

rail; a5 a5, rollers, placed upon both ends of the shafts of the suspending wheels. They are loose upon the shafts and free to run upon them whenever they come in contact with the safety-rail or angle-iron bar a6 ne, placed above the main rail, but outside of the suspendingwheels.

This arrangement secures the cars against all danger of running off the track, and when combined with the lower guides (the vertical and horizontal wheels) it will easily be admitted that an elevated road constructed upon the before-described system can be made much F F F F, angle-iron car-guides safer than ordinary ground roads, and might7 all constructed and arranged substantially as l in fact, be considered Vas perfectly free from and for the purpose set forth. Y

EDWIN JAMES HULBERT.

danger.

What We claixn as our invention is- A. N. N. AUBIN. In elevated arch railways, the combination of the segments al, bindinggirders B B, cast- Witnesses: iron Sti'eners C C, upright bars E E with FRANCES C. HULBERT, shoulders e, and angle-iron guides or plates F, LUCIE M. MATILE.

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