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The valve is then bent over until it touches the edge of the float nearest the head, and when it is in this position, the portion of it which is inflated with air looks like a bladder, the air gradually is expelled into the float, and as this process takes place the bladder in the valve diminishes, and the valve becomes by degrees like a lip pushed forwards until it lies flat on the float.
When at a great elevation, it seems, the aeronaut, wishing to descend, opened the valve. It had not been well constructed, and after being opened it would not close again. The consequent loss of gas brought the balloon down with great force. Harris lost his life with the fall; but the young lady who had accompanied him received only a trifling wound.
I'm hanged if I don't give you something to stare at, I said, and with that I screwed up the escape valve and turned on the compressed air from the belt, until I was swelled out like a blown frog. Regular imposing it must have been. I'm blessed if they'd come on a step; and presently one and then another went down on their hands and knees.
Vincent's engine already had a chemical stream on the blaze, and it was doing effective work wherever the fluid was directed. But quite an area was now blazing. There was a hiss as the gas began to form in the copper cylinder when Bert turned the valve, and an instant later a second whitish stream was being directed at the licking tongues of fire.
The function of the upper valve, at that time, is to keep the water in the pipe from falling when the pressure on the column is removed. The expansive power of the air enables it to do more lifting at the upper than at the lower level, so that a larger diameter of pipe can be used at the former place.
A. They are usually taken out through a door in the top of the hot well provided for that purpose, which door should be as large as the plates themselves; and it is a good precaution to cast upon this door which will be of cast iron six or eight stout projecting feet which will press upon the top of the outlet or delivery valve plate when the door is screwed down.
Pilâtre, in order to descend, essayed to open the valve, but the valve-cord became entangled in the balloon, and tore it so badly that it became empty in an instant. It fell upon the Montgolfier apparatus, overturned it, and dragged down the unfortunates, who were soon shattered to pieces! It is frightful, is it not?" I could only reply, "For pity's sake, let us descend!"
And when the water is all out, we turn off the stream of compressed air, and open this valve, which allows the compressed air to pass into the habitable portion of the ship, quickly reducing the air-pressure in this room to what it is in the other habitable portion of the ship; then we open this door, and pass into the diving-room."
This is similarly screwed to flange of pipe, and with leather packing. The valve is opened and closed by a movable rod. If fixed, it might catch the toes of the swimmer, and for this reason it would perhaps be best to set the valve itself back in a recess. Instead of this valve, an ordinary 4-in., 5-in., or 6-in. "plug" waste could be employed, but it is rather clumsy on such a scale.
Cold and exertion soon told on him, as he clung frantically to the valve rope, and when his strength failed him he actually risked the expedient of passing his head through the meshes of the net.
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