The Life of George Stephenson and of his Son Robert Stephenson / Comprising Also a History of the Invention and Introduction of the Railway Locomotive

by Samuel Smiles

This anecdote of George Stephenson was related to the writer, near the pit-mouth, by one of the men, Kit Heppel, who had been present, and helped to build up the brick wall by which the fire was stayed, though several of the workmen were suffocated. Heppel relates that, when down the pit some days after, seeking out the dead bodies, the cause of the accident was the subject of some conversation between himself and Stephenson, and Heppel then asked him, "Can nothing be done to prevent such awful occurrences?" Stephenson replied that he thought something might be done. "Then," said Heppel, "the sooner you begin the better, for the price of coal-mining now is pitmen's lives."

Fifty years since, many of the best pits were so full of the inflammable gas given forth by the coal that they could not be worked without the greatest danger, and for this reason some were altogether abandoned. The rudest possible means were adopted of producing light sufficient to enable the pitmen to work by. The phosphorescence of decayed fish-skins was tried; but this, though safe, was very inefficient. The most common method employed was what was called a steel mill, the notched wheel of which, being made to revolve against a flint, struck a succession of sparks, which scarcely served to do more than make the darkness visible. A boy carried the apparatus, working the wheel; and by the imperfect light thus given forth the miner plied his dangerous trade. Candles were only used in those parts of the pit where gas was not abundant. Under this rude system not more than one third of the coal could be worked, while two thirds were left.

What the workmen, not less than the coal-owners, eagerly desired was a lamp that should give forth sufficient light, without communicating flame to the inflammable gas which accumulated in certain parts of the pit. Something had already been done toward the invention of such a lamp by Dr. Clanny, of Sunderland, who, in 1813, contrived an apparatus to which he gave air from the mine through water, by means of bellows. This lamp went out of itself in inflammable gas. It was found, however, too unwieldy to be used by the miners for the purposes of their work, and did not come into general use. A committee of gentlemen interested in coal-mining was formed to investigate the causes of the explosions, and to devise, if possible, some means of preventing them. At the invitation of that committee, Sir Humphry Davy, then in the full zenith of his reputation, was requested to turn his attention to the subject. He accordingly visited the collieries near Newcastle on the 24th of August, 1815, and at the close of that year, on the 9th of November, 1815, he read before the Royal Society of London his celebrated paper "On the Fire-damp of Coal Mines, and on Methods of Lighting the Mine so as to prevent its Explosion."

But a humbler though not less diligent and original thinker had been at work before him, and had already practically solved the problem of the Safety-lamp. Stephenson was, of course, well aware of the desire which prevailed in the colliery districts for the invention of a lamp which should give light enough for the miners to work by without exploding the fire-damp, and the painful incidents above described only served to quicken his eagerness to master the difficulty.

For several years he had been engaged, in his own rude way, in making experiments with the fire-damp in the Killingworth mine. The pitmen used to expostulate with him on these occasions, believing the experiments to be fraught with danger. One of the sinkers, called M'Crie, observing him holding up lighted candles to the windward of the "blower" or fissure from which the inflammable gas escaped, entreated him to desist; but Stephenson's answer was, that "he was busy with a plan by which he hoped to make his experiments useful for preserving men's lives." On these occasions the miners usually got out of the way before he lit the gas.

In 1815, although he was very much occupied with the business of the collieries and the improvement of his locomotive engine, he was also busily engaged in making experiments upon the inflammable gas in the Killingworth Pit. As he himself afterward related to the Committee of the House of Commons which sat on the subject of Accidents in Mines in 1835, he imagined that if he could construct a lamp with a chimney so arranged as to cause a strong current, it would not fire at the top of the chimney, as the burnt air would ascend with such a velocity as to prevent the inflammable air of the pit from descending toward the flame; and such a lamp, he thought, might be taken into a dangerous atmosphere without risk of exploding.

Such was Stephenson's theory, when he proceeded to embody his idea of a miner's safety-lamp in a practical form. In the month of August, 1815, he requested his friend Nicholas Wood, the head viewer, to prepare a drawing of a lamp according to the description which he gave him. After several evenings' careful deliberations, the drawing was prepared, and it was shown to several of the head men about the works. "My first lamp," said Stephenson, describing it to the committee above referred to, "had a chimney at the top of the lamp, and a tube at the bottom to admit the atmospheric air, or fire-damp and air, to feed the burner or combustion of the lamp. I was not aware of the precise quantity required to feed the combustion; but to know what quantity was necessary, I had a slide at the bottom of the tube in my first lamp, to admit such a quantity of air as might eventually be found necessary to keep up the combustion."

Accompanied by his friend Wood, Stephenson went into Newcastle, and ordered a lamp to be made according to his plan by the Messrs. Hogg, tinmen, at the head of the Side—a well-known street in Newcastle. At the same time, he ordered a glass to be made for the lamp at the Northumberland Glass-house in the same town. This lamp was received from the makers on the 21st of October, and was taken to Killingworth for the purpose of immediate experiment.

"I remember that evening as distinctly as if it had been but yesterday," said Robert Stephenson, describing the circumstances to the author in 1857. "Moodie came to our cottage about dusk, and asked 'if father had got back with the lamp.' 'No.' 'Then I'll wait till he comes,' said Moodie; 'he can't be long now.' In about half an hour, in came my father, his face all radiant. He had the lamp with him! It was at once uncovered and shown to Moodie. Then it was filled with oil, trimmed, and lighted. All was ready, only the head viewer hadn't arrived. 'Run over to Benton for Nichol, Robert,' said my father to me, 'and ask him to come directly; say we're going down the pit to try the lamp.' By this time it was quite dark, and off I ran to bring Nicholas Wood. His house was at Benton, about a mile off. There was a short cut through Benton Church-yard, but just as I was about to pass the wicket I saw what I thought was a white figure moving about among the grave-stones. I took it for a ghost! My heart fluttered, and I was in a great fright, but to Nichol's house I must get, so I made the circuit of the church-yard; and when I got round to the other side I looked, and, lo! the figure was still there. But what do you think it was? Only the grave-digger, plying his work at that late hour by the light of his lantern set upon one of the grave-stones! I found Wood at home, and in a few minutes he was mounted and off to my father's. When I got home I was told they had just left—it was then about eleven—and gone down the shaft to try the lamp in one of the most dangerous parts of the mine."