Posted inEngineering Iron & Steam

The Departure of the Great Eastern

From the London Times.

Nore Light, Thursday, Sept. 8.

After her first short run the Great Eastern remained at her anchor off Purfleet for the rest of the night, and slowly resumed her progress down the river at a quarter to 9 o’clock this morning. Her stoppage at Purfieet was a sad disappointment to many thousands who had been collecting at Gravesend all day in the firm belief that she could or would stop nowhere else. Her slight detention at Blackwall point, however, prevented this, and it became absolutely necessary from the state of the tide to bring up at once at Long Reach. The distinguished arrival threw Purfleet into a state of uncommon excitement. Every one within moderate reach of it by road or rail hurried to the little village till it was thronged to the water’s edge. Gravesend, also, seemed most unwilling to yield up its share in the great occasion without an effort, and before long crowded boats steered round and round the ship, the passengers cheering themselves till they were hoarse again, while the bands played “See the Conquering Hero Comes,” “Rule Britannia,’’ and ail sorts of musical welcomes. For the rest of the evening there was a constant repetition of such visits. Not a vessel passed that did not turn up hands to cheer, while many, as they came down the river, dressed in flags from stem to stern. It was not till night had fallen that the great ship was fairly left alone, and began swinging round to her anchor with the rising tide. The night was a little puffy, and seemed inclined to come more so, but the wind fell as the moon rose, and the weather eventually settled down into a dead calm, it took upwards of an hour for the tide to turn the ship fully round, and at low water, as she lay across the river for a short time in turning, she might almost be said to have stopped the navigation with her colossal bulk. During the night she swung twice again, and by daylight was lying with her head fair for the resumption of her course down the river.

Posted inEngineering Iron & Steam

The Atlantic Telegraph Cable

The last steamer from England brings the following:

The shore end of the Atlantic cable was landed and successfully connected with the instruments on board the Great Eastern. The Knight of Kerry invoked success on the undertaking, and in conclusion called on Sir Robert Peel, who made an admirable address. Cheers were then given for the President of the United States, when paying out of the heavy shore end of the cable commenced. The splice was completed in the most successful manner, and the cable worked perfectly. The gunboats Terrible and Sphynx accompanied the Great Eastern. A telegram from Valencia, dated the 24th of July, says : “Insulation defects took place on Monday afternoon. The mischief is supposed to exist three miles west of the shore-end splice, and it is believed that it was caused by too much strain from the Great Eastern. She hove too [sic] ten miles from the shore. The Caroline is picking up and underrunning the splice and repairing the fault. It is expected that the damage will be rectified immediately.

Posted inIron & Steam Travelers' Tales

Mr. Weed Through the Thames Tunnel

Extract from Letters From Mr. [Thurlow] Weed . . . No. X., Correspondence of the Albany Evening Journal

Monday, July 17

I have been through the Thames Tunnel. This is to London what the Croton Water Works are to New York, the great achievement of the 19th century. There is nothing at either entrance of the Tunnel, which indicates that you are in the vicinity of this extraordinary improvement. We passed over it in a steamer in the morning, without being aware that other masses of fellow beings were quietly walking through a subterranean passage below us! The visitor is directed “This way to the Tunnel ” by a board on the corner of a street. You descend a winding stone stairway 100 steps, and enter into the Tunnel, which is well lighted with gas, and afforded us a cool pleasant walk, after four hour’s exposure to the sun. The Tunnel has two avenues, each wide enough to allow 12 or 16 persons to walk abreast. Half way through, a printing press is stationed “By Royal Authority,” which is throwing off sheets containing an account of the Tunnel. I told the man I would purchase two of his sheets provided lie would allow me to “pull” them myself. This, upon learning that “I knows the ropes,” as they say at sea, he consented to. I have, therefore, an account of the Thames Tunnel, printed by myself, standing midway between the London and Surry sides of the river, seventy feet below its bed, with Steamers and ships passing directly over my head!

Posted inCivil Engineering Iron & Steam

Marc Brunel’s Account of the Thames Tunnel

Meeting of April 11, 1837

Mr. Brunel gave an account of the Thames Tunnel. Having described the nature and difficulties of the undertaking, and the previous attempts which had been made by others to effect a similar work, he explained, by reference to sections, the nature of the strata below the river. He had adopted the rectangular form of the present excavation, because the work would set better than if it had been of any other form, and it also had a better sustaining surface. The necessity of supporting the ground, and of having a sufficient shelter, had led to the adoption of the shield, respecting which so much had been said. The construction of this would be most easily understood, by conceiving twelve books set side by side on their ends. These would represent the parallel frames which, standing side by side, but not in immediate contact, filled up the excavation. Each frame was divided into three boxes or cells, placed one above the other, the adjustment of the floors of which, and other details, were minutely described by Mr. Brunel.

Posted inCivil Engineering Iron & Steam

Beamish on the Thames Tunnel

By Richard Beamish, M. Inst. C.E.

April 4, 1837

The paper states that several attempts had been made in former years to effect a communication betwixt the opposite shores of the Thames by means of a tunnel, all of which, however, failed. In 1798, Dodd proposed a tunnel at Gravesend; in 1804, Chapman projected one at Rotherhithe; and in 1807, Vazie commenced the construction of a shaft, II feet diameter, at a distance of 315 feet from the river. With Vazie was associated Trevethick, a man of great practical knowledge as a miner, and by indefatigable labor, a drift-way 5 feet in height, 2 feet 6 inches in breadth at the top, and 3 feet at the bottom, was carried 1046 feet under the river. In the spring of 1808, having first ascended from under a rocky stratum, though with a depth of at least 25 feet betwixt them and the bed of the river, the Thames broke in upon them, and not a single brick having been laid, the work was irretrievably lost.

Posted inCivil Engineering Iron & Steam

Young Brunel in the Thames Tunnel

The Thames Tunnel has almost ceased to be a wonder; but the conduct of the younger Brunel on the two occasions referred to below can never lose its claim to admiration. The extract is from an article on the tunnel in the Courier & Enquirer, of Saturday : –

The tunnel has been twice inundated, the first time it occurred, the disorder and fright it caused among the workmen was extreme. Neither Mr. Brunel nor his son were there, but one of the superintending engineers, of the name of Griffiths, preserved his presence of mind, rallied the men, and conducted them in safety to the opening before the water had gained the summit of the arch. In a few minutes afterwards, it was filled.

Drilling scene from Georges Méliès’s film Tunneling the English Channel (1907).
Posted inDaily News Iron & Steam

Proposed Tunnel Under Dover Straits

The project of tunnelling a passage from England to France under Dover Straits is still talked of in England. The London Daily News of December 25 says of it:

“The plan of tunnelling beneath the Straits is not altogether a new one. Probably the success with which the Mont Cenis tunnel has been worked through the solid backbone of the Alpine range has attracted new attention to a scheme which on the face of it seems far from being impracticable. It must be remembered, however, that the difficulties to be encountered in tunnelling beneath the Straits of Dover are of a totally different character from those which the French engineers have had to meet with in tunnelling through the Alps. The soil to be traversed in the former instance would probably be the ‘second chalk formation,’ which may be assumed to extend in an unbroken course from the place of its uprising in England to the place in which it makes its appearance in France. It need hardly be said that the difficulty of perforating this soil would be very much less than that of perforating the hard and complicated material which has been encountered by the French engineers. On the other hand, however, there are dangers and difficulties in tunnelling under the Straits which more than make up for the comparative ease with which the mere process of perforation could be pursued. It needs but a slight acquaintance with the history of the construction of the Thames Tunnel to enable one to recognize the fact that the workers in the suggested tunnel beneath the Straits would be exposed to enormous risks from the effect of the pressure of the sea upon the stratum through which they would have to work. Again and again the water burst into the Thames Tunnel, and drove the workmen out. Brunel himself nearly lost his life during one of these irruptions. Now, if this happened beneath the Thames, what might be looked for from the effects of the enormous pressure of the sea to say nothing of the increased danger during heavy storms? And then the workmen in the Thames Tunnel had but a comparatively short distance to run, when they were threatened with an irruption of water, if such an event threatened workmen engaged nine or ten miles from either outlet of the suggested tunnel, escape would be hopeless. In a short time the whole length of the tunnel would be filled with the waters of the sea, and the labors of years would be rendered useless.