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Updated: June 26, 2025
But he went up a ladder against a gale of ventilation a ladder that was encased in a kind of gas-tight fire escape and ran right athwart the great forward air-chamber to the little look-out gallery with a telephone, that gallery that bore the light pom-pom of German steel and its locker of shells.
"I thought it was full of powder and dynamite," apologized Peggy. "You see, it's like this," Blackton began. "We put the powder and dynamite down there, and pack it over solid with rock and cement. If we didn't leave this big air-chamber above it there would be only one explosion, and probably two thirds of the explosive would not fire, and would be lost. This chamber corrects that.
To steady the flow and prevent "water hammer," a small air-chamber should be attached to the delivery pipe. An Alternative Arrangement. The striker becomes a cross head, and is connected by a forked rod passing on each side of the pump with the crank of a fly wheel overhanging the base. The valve is operated in the ordinary manner by an eccentric on the crankshaft.
This is because birds can draw air into the whole of their body, and they have a large stock laid up in the folds of their windpipe, and besides this the air-chamber behind their elastic bands or vocal chords has two compartments where we have only one, and the second compartment has special muscles by which they can open and shut it, and so prolong the trill.
Between the branches, A B D E, of the pipe there is soldered a sheet of galvanized iron, which forms isolatedly a receptacle or air-chamber, F, that contains at its upper part a small aperture, b, that remains always open, and, at its lower part, a copper screw-plug, d, and a galvanized hook, H.
The square stern, buoyed up by the air-chamber, lifted the boat out of the resulting wave as he struck the bottom of the descent. This much of the rapid had only taken a few seconds. I followed at once, but was not so fortunate. The Defiance was carried to the left side, where some water dropped over the side of the rock, instead of reversing.
The working of these engines was not without danger, for at 20,000 feet below the surface of the water, and under such great pressure, they were exposed to fracture, the consequences of which would be dreadful. J. T. Maston, the brothers Blomsberry, and Engineer Murchison, without heeding these dangers, took their places in the air-chamber.
"I suspect it is," replied the doctor; "for, though it is doubtless able to leap with great accuracy upon its prey, we saw it took some time to recharge the upper air-chamber, so that, were it not armed with poison glands, it would fall an easy victim to its more powerful and swifter contemporaries, and would soon become extinct."
She carries down air in a bag made for this purpose, till the water is expelled from the cell through the opening below. The spider lived quite dry in her little air-chamber beneath the water ages before the diving-bell was invented; but that she understood anything of the doctrines of space and gravity, no one would venture to assert.
There were three blades projecting from the outside, and running spirally from the point to the butt. These fitted into grooves in the inside of the cannon, which were really huge air-guns twenty feet long, including the air-chamber at the breech.
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