Third rail

“ To secure perfect safety in ascending and descending such a tremendous grade, the track is composed of three rails bolted to a trestle of heavy timbers, the centre rail being an immense wrought-iron ladder, with rounds four inches apart, into which the cogs of the locomotive drive-wheel fit, and thus drag the train up the steep as well as control it, with aid of air-brakes, in making the descent. One and a half hours are consumed in making the round trip, and the fare is six dollars, but the view from the summit is so magnificent that it fully justifies the expense. ”

“ Long trains brought up to the end of the track, loads of ties and rails the former were transferred to teams and sent one or two miles ahead and put in place on the grade, then spikes and rails were reloaded on platform cars and pushed up to the last previously laid rail and with an automatic movement and celerity that was wonderful, practiced hands dropped the fresh rails one after another on the ties exactly in line. ”

“ It is very doubtful how far the addition of a single rail only would be consistent with safety, as in this case the centre of gravity of the carriages of different gauge in the same train would not be in the same straight line. If a complete double set of rails were laid down the expense would be very considerable. ”

“ The earliest cast-iron railway was laid down before the middle of the eighteenth century, about one hundred years after the first wooden 'tram-ways.' Half a century later we find the first rail-and-wheel combination as we know it on modern tramways and railways, where the wheel carries an inner flange and runs upon the head of a narrow metal rail. This is the form which experience has proved to be best adapted for safety, speed, and economy in power. The improvements made since the beginning of the nineteenth century have been in matters of detail. ”

“ The water must be soft, to protect the locomotive boilers; if hard, an apparatus [Pg 42] is erected for the softening process. Grade crossings are to be avoided, highway crossings being built, wherever possible, over or under the railroad.
A railroad crossing another railroad at grade is an abomination not to be permitted nowadays. The universal use of the air-brake has permitted a reduction of the “head-room,”—the necessary clearance between the rail and overhead obstruction—from 20 feet to 14 feet. ”

“ The balance is built and operated on private right of way, and goes around, rather than through, the cities. The tracks are standard gauge and of standard railroad construction, were, at the time they were laid, of higher class than those of the Southern Railway Company in the same territory, were intended for handling substantial interchange freight traffic in connection with steam railroads, have the same ruling grades as the latter in the same territory, and are of 80-pound rail. ”

“ The introduction of electricity facilitated the construction of monorail systems of roads, which had long been the dream of railroad constructors, since this power192 could be applied with so much more flexibility. The defects of the parallel rail system are apparent both in construction of the roadbed and the operating of trains. It is almost impossible to lay and maintain the rails in exact parallels, and even more difficult to keep each rail at the proper height at all points. ”

“ It is evident that the rail which would last for very many years under the small traffic, would have a very short life under the frequent traffic. Hence the reason why it is found expedient to give a large increase of material in the heads of rails carrying the heavy, constant train service of many of our main lines. ”

“ The first improvement on the original wooden rail pegged on to the sleepers was the fastening on it of another rail, in order that this could be removed, when worn down, without interfering with the sleepers. This arrangement was known as the "double way"; and Nicholas Wood says of it: "The double rail, by increasing the height of the surface whereon the carriage travelled, allowed the inside of the road to be filled up with ashes or stone to the under side of the upper rail, and consequently above the level of the sleepers, which thus secured them from the action of the feet of the horses." ”

“ Thus, as regards date of opening, length of line, service of trains, and average fares, there is a close similarity between the English and French lines; but the system is widely different. In London we burrow deep; in Paris they go just beneath the surface, the authorities after much hesitation having adopted the shallow underground system. Our Tube trains are shot through huge iron pipes penetrating the subsoil at depths varying from sixty to a hundred feet, and to get at the rail level, passengers must take a perpendicular journey in a big lift. ”

“ The flange rail, Fig. 265, was designed to give a broad, direct bearing on the sleepers, and thus avoid the necessity of using chairs. Rails of this section have been laid down on many of our lines at home, and are very largely used on the Continent, in the United States of America, and in our colonies generally. This section is, also, nearly always adopted for narrow-gauge railways. Having fewer parts, it makes a cheaper road than the bull-head rail, but is not considered so strong or suitable for heavy and fast traffic. ”

“ It must be understood that a properly laid rail will not, in any way, interfere with the ordinary uses of the street or road—that it will only be a stripe of iron paving substituted for stone—it will subserve all the purposes of wheels running on it, but will not prevent wheels from being turned off it at any point required, without needing the expensive and troublesome appliances called switches and turn-tables used on railways proper. ”

“ The girder rails were either bedded directly on the foundation or spiked to timber sleepers which were buried in the concrete.
The form of head adopted for tramway rails in Europe has almost universally been one with the groove on one side. With this section the wheel flange forces out the dirt clear of the tread. In a few isolated cases a centre grooved rail has been used. As with railways, the adoption of many different gauges has led to much inconvenience. This want of uniformity in the gauge is in some parts of the country a great obstacle to the construction of inter-urban lines. ”

“ In a line that is well signalled—and it may be taken for fact that there is no railway in the kingdom upon which there are not at present efficient signals—accidents are not the result of delays, although there is a very general belief in the minds of the public that it is otherwise. In two recent instances, accidents of a calamitous nature have been the result of a rail being taken up and not replaced before a train has come upon the spot ”

“ Valuable and interesting statistics have from time to time been recorded, with a view to ascertain the average life of a steel rail, by obtaining the number of million tons of train load which it would sustain before it became worn down to such an extent as to be no longer of service on the line. It will be readily understood that the rate of wear of a steel rail will depend not only on the weight and section of the rail itself, but on the class of rolling-stock, and the description of traffic it has to carry. ”

“ The cost for repairs, therefore, of express cars, would be somewhat greater than for any others.
431 COST AND MAINTENANCE OF WAY AND WORKS. As the speed is increased, the relative effect of grade and curves is lessened, but the absolute danger of passing curves is increased. Express trains require larger radius of curvature, or greater elevation of exterior rail than others, which extra elevation causes an unnecessary resistance to all other trains. The rails to resist large and heavy wheels must be heavier and more firmly fastened. ”

“ The centre rail not only aids the train in going round curves, but also adds largely to its safety. Each vehicle is provided with four horizontal pulleys, each of about eight inches diameter, playing around vertical axes fixed upon the frame of the vehicle, and placed two and two at each of its extremities, and on each side of the centre rail. By the tightening of these pulleys, the flanges of the wheels, instead of gliding along the outer rails, press strongly against them, and thus the train is able to overcome curves unaccomplishable by any other means. ”

“ On shot the locomotive, like an arrow from the bow, the men throwing over the ties until the train was well nigh unloaded, when just as they were close to the curve by which the train arrives at the station, they saw the dreaded cars strike a tie, or something equally of service, and with a desperate plunge rush down the embankment, some fifteen feet, to the little valley, and creek below. ”

“ The reason that ordinary railway tracks are an obstruction to common travelling-carriages is, that it is necessary that the rails should be raised above the surface of the ground, because railroad wheels are constructed differently from ordinary wheels in having two circumferences of different diameters, the smaller circumference being intended to rest on the rail (and called the tread) , and the larger circumference running on the side of the rail. ”

“ Engine the 107 was not rebuilt for a long time and was never again employed in passenger service. The foreman in one of the repair shops wrote to Philadelphia and learned that the 109 was completed on Thursday and the 107 on Friday. As I said a while ago, railroad employees are not superstitious,—they will all tell you so,—much less railway officers; but it is a fact to-day that a new locomotive or a locomotive that has been rebuilt is never taken out on the Denver and Rio Grande on Friday. ”

“ It is not advisable to attempt to spring a 14 lb. rail round a sharper curve than five chains, or an 18 lb. rail beyond ten chains radius.
The result of attempting too much springing is that the rails, under the traffic and changes of temperature, work outwards at the joints and make “dog legs” more or less serious. Where the ballast is of a loose dry nature very little, if anything, can be done with springing. I have enlarged upon this subject of rail-laying because it is of prime importance to a good road, and a matter that, on narrow-gauge lines, does not receive the attention it requires. ”

“ Culverts have been laid for each small run or kill or creek; the bridge-builders along the new line finish their work and cart off their kits; the day comes when there is an unbroken railroad from one end of the new line to the other. It links new rails and new towns; its localities produce for new markets, commerce from strange quarters pours down upon the land that has known it not. Passenger trains begin regular operation, the fresh-painted depots are brilliant in their newness, the shriek of the locomotive sounds where it has never before sounded. ”

“ At that time the cars, instead of being drawn by the locomotive around Capitol Hill as now, at Albany, were drawn to the summit of the hill by cables worked by stationary engines, and there attached to the locomotive. The rail used at that time on all the above mentioned roads which were in New York, were strap rails. It was soon found, however, that these rails became loosened at their butts, and being underrun [Pg 467] by the wheels peeled up, often running through the car floors and in some cases fatally injuring passengers. ”

“ The introduction of this section of rail has contributed greatly to the increased efficiency and durability of the permanent way for street traffic; and as the ends of the rails can be secured by ordinary fish-plates, there is the great acquisition of even joints and increased smoothness in the running of the tramcars. This rail can be rolled of various weights to suit the rolling loads. On some tram-lines a moderately heavy section has been adopted, and secured to transverse sleepers of rolled iron or steel laid on a bed of concrete. ”

“ Wooden sleepers continued to be used, the rails being secured by spikes passing through the extremities, but about 1793 stone blocks also began to be employed—an innovation associated with the name of Benjamin Outram, who, however, apparently was not actually the first to make it. This type of rail (fig. 1) was known as the plate-rail, tramway-plate or barrow way-plate—names which are preserved in the modern term “plate layer” applied to the men who lay and maintain the permanent way of a railway. ”

“ The American railway lines of those days had, generally speaking, been constructed as cheaply as possible by the private enterprise which—though with liberal grants of land and other advantages—alone undertook their provision, the main idea being to supply a railway of some sort to satisfy immediate wants and to improve it later on, when population and traffic increased and more funds were available. ”

“ The gain in leg-space will be great, the centre gangway giving a clear 4 feet, and there will be fewer cross seats. Each train will hold about 338 passengers; the ventilation of the cars will be perfect; and the height sufficient for a giant. As the District tunnels are 25 feet in diameter, and 15 feet 9 inches from the rail level to the crown of the arch, there will be about 2 feet of head-room, about 2 feet 6 inches between each train, and the same between the trains and the sides of the tunnels. ”

“ It is without doubt true that, had not transportation by rail been invented until the present time, the public roads of this country would be in a far more satisfactory condition than we find them to-day. With the advent of the locomotive came the withdrawal of active interest in the character of our highways. All the energies of our people were devoted to extending and perfecting the vast network of railroads that cross and recross the United States. ”