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We ran back our pieces through the gorge of the bastions, wheeled them in on the terre-plein back from the wall, and cocked them higher on their trunnions to get them in train for the opposite peak. "Boom!" went the first gun, and a bit of brown earth spat up to the left of the enemy, low by a dozen paces.
Although we didn't live a hundred years ago, we can see how the folks of that age did; and, although society is altered, and there are no Admiral Benbows, nor Hawser Trunnions, and folks don't travel in vans with canvas covers, or wear swords, and frequent taverns, and all that as they used to did to England; still it's a pictur of the times, and instructin' as well as amusin'. I have learned more how folks dressed, talked, and lived, and thought, and what sort of critters they were, and what the state of society, high and low, was then, from his books and Fielding's than any I know of.
It would most probably have been a twelve or eighteen-pounder howitzer, for it was about four feet in length, and disproportionately large in girth; but one of the trunnions, and the button at the breech, were broken off, the portion that had lain undermost had entirely disappeared, and the remainder was so honeycombed, that beyond ascertaining that it was a piece of ordnance, we could elicit nothing from this curious relic of a bygone generation.
"I am like an old gun," he wrote, in one of his letters, "that is spiked, or the trunnions knocked off, and yet am carted off, not for the worth of the old iron, but to balk the enemy of a trophy. My political life is ended, and I am the survivor of myself; or, rather, a troubled ghost of a politician that am condemned to haunt the field where he fell."
They then ran away without spiking the guns properly, and without making the slightest attempt either to burn the carriages or knock the trunnions off. The invaluable stores were left in their places. The only real destruction was caused by a barrel of powder, which some bunglers blew up by mistake.
The cylinder, it was said, would become oval, the trunnion bearings would be liable to heat and the trunnion joints to leak, the strain upon the trunnions would be apt to bend in or bend out the sides of the cylinder; and the circumstance of the cylinder being fixed across its centre, while the shaft requires to accommodate itself to the working of the ship, might, it was thought, be the occasion of such a strain upon the trunnions as would either break them or bend the piston rod.
The whole of the bearings in the best oscillating engines are fitted by means of scraping, and on no other mode of fitting can the same reliance be placed for exactitude. Q. How do you set out the trunnions of oscillating engines, so that they shall be at right angles with the interior of the cylinder?
Marmont, who commanded the artillery, had devised the ingenious plan of taking the cannon from their carriages and placing them in the hollowed-out trunks of pine, so that the trunnions fitting into large notches kept them steady during the ascent over the snow and the still more difficult descent.
Double breechings were rove on the guns, and they were further secured with tackles; and strong cleats nailed behind the trunnions; for we heeled over so much when we lurched, that the guns were wholly supported by the breechings and tackles, and had one of them broken loose, it must have burst right through the lee side of the ship, and she must have foundered.
Marmont, who commanded the artillery, had devised the ingenious plan of taking the cannon from their carriages and placing them in the hollowed-out trunks of pine, so that the trunnions fitting into large notches kept them steady during the ascent over the snow and the still more difficult descent.
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