Biographies of Working Men. Allen Grant
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had helped to prepare the way for George Stephenson; and George Stephenson himself had been working at the subject for many years before he even reached the first stage of realized endeavour. As early as 1814 he constructed his first locomotive at Killingworth colliery; it was not until 1822 that he laid the first rail of his first large line, the Stockton and Darlington Railway.
Stephenson's earliest important improvement in the locomotive consisted in his invention of what is called the steam-blast, by which the steam is made to increase the draught of the fire, and so largely add to the effectiveness of the engine. It was this invention that enabled him at last to make the railway into the great carrier of the world, and to begin the greatest social and commercial upheaval that has ever occurred in the whole history of the human race.
Meanwhile, however, George was not entirely occupied with the consideration of his growing engine. He had the clocks and watches to mend; he had Robert's schooling to look after; and he had another practical matter even nearer home than the locomotive on which to exercise his inventive genius. One day, in 1814, the main gallery of the colliery caught fire. Stephenson at once descended into the burning pit, with a chosen band of volunteers, who displayed the usual heroic courage of colliers in going to the rescue of their comrades; and, at the risk of their lives, these brave men bricked up the burning portion, and so, by excluding the air, put out the dangerous fire. Still, even so, several of the workmen had been suffocated, and one of the pitmen asked Geordie in dismay whether nothing could be done to prevent such terrible disasters in future. "The price of coal-mining now," he said, "is pitmen's lives." Stephenson promised to think the matter over; and he did think it over with good effect. The result of his thought was the apparatus still affectionately known to the pitmen as "the Geordie lamp." It is a lamp so constructed that the flame cannot pass out into the air outside, and so cause explosions in the dangerous fire-damp which is always liable to occur abundantly in the galleries of coal mines. By this invention alone George Stephenson's name and memory might have been kept green for ever; for his lamp has been the means of saving thousands of lives from a sudden, a terrible, and a pitiful death. Most accidents that now occur in mines are due to the neglect of ordinary precautions, and to the perverse habit of carrying a naked lighted candle in the hand (contrary to regulations) instead of a carefully guarded safety lamp. Yet so culpably reckless of their own and other men's lives are a large number of people everywhere, that in spite of the most stringent and salutary rules, explosions from this cause (and, therefore, easily avoidable) take place constantly to the present day, though far less frequently than before the invention of the Geordie lamp.
Curiously enough, at the very time when George Stephenson was busy inventing his lamp at Killingworth, Sir Humphrey Davy was working at just the same matter in London; and the two lamps, though a little different in minor points of construction, are practically the same in general principle. Now, Sir Humphrey was then the great fashionable natural philosopher of the day, the favourite of London society, and the popular lecturer of the Royal Institution. His friends thought it a monstrous idea that his splendid life-saving apparatus should have been independently devised by "an engine-wright of Killingworth of the name of Stephenson—a person not even possessing a knowledge of the elements of chemistry." This sounds very odd reading at the present day, when the engine-wright of the name of Stephenson has altered the whole face of the world, while Davy is chiefly remembered as a meritorious and able chemist; but at the time, Stephenson's claim to the invention met with little courtesy from the great public of London, where a meeting was held on purpose to denounce his right to the credit of the invention. What the coal-owners and colliers of the North Country thought about the matter was sufficiently shown by their subscription of L1000, as a Stephenson testimonial fund. With part of the money, a silver tankard was presented to the deserving engine-wright, while the remainder of the sum was handed over to him in ready cash. A very acceptable present it was, and one which George Stephenson remembered with pride down to his dying day. The Geordie lamp continues in use to the present moment in the Tyneside collieries with excellent effect.
For some years more, Mr. Stephenson (he is now fairly entitled to that respectable prefix) went on still further experimenting on the question of locomotives and railways. He was now beginning to learn that much unnecessary wear and tear arose on the short lines of rail down from the pit's mouths to the loading-places on the river by the inequalities and roughnesses of the joints; and he invented a method of overlapping the rails which quite got over this source of loss—loss of speed, loss of power, and loss of material at once. It was in 1819 that he laid down his first considerable piece of road, the Hetton railway. The owners of a colliery at the village of Hetton, in Durham, determined to replace their waggon road by a locomotive line; and they invited the now locally famous Killingworth engine-wright to act as their engineer. Stephenson gladly undertook the post; and he laid down a railway of eight miles in length, on the larger part of which the trucks were to be drawn by "the iron horse," as people now began to style the altered and improved locomotive. The Hetton railway was opened in 1822, and the assembled crowd were delighted at beholding a single engine draw seventeen loaded trucks after it, at the extraordinary rate of four miles an hour—nearly as fast as a man could walk. Whence it may be gathered that Stephenson's ideas upon the question of speed were still on a very humble scale indeed.
Before the Hetton railway was opened, however, George Stephenson had shown one more proof of his excellence as a father by sending his boy Robert, now nineteen, to Edinburgh University. It was a serious expense for a man who was even now, after all, hardly more than a working man of the superior grade; but George Stephenson was well repaid for the sacrifice he thus made on behalf of his only son. He lived to see him the greatest practical engineer of his own time, and to feel that his success was in large measure due to the wider and more accurate scientific training the lad had received from his Edinburgh teachers.
In 1819 George married again, his second wife being the daughter of a farmer at Black Callerton.
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