Chapter 579 Air Extractor
“Look, this is the so-called air extractor.”
Paul patted the thing called an air extractor or vacuum pump with his hand. It's fixed on the desktop.
Wells approached it and looked at it carefully.
The main part of this thing is a metal can. There are two valves on one end of the metal can. One valve can only be opened inward, and the other valve can only be opened outward. A metal rod extends from the other end of the can. This metal rod is connected to a second metal rod through a movable circular shaft, and the other end of the second metal rod is fixed on the edge of a runner. , it is not accurate to describe it as fixed, because it is also placed on the runner with a round shaft, and there is a rocker on the runner.
Guy Burns spontaneously introduced him. He first pointed to the metal can and said: "Great chemist, look at this. This is a gas can with a piston inside and two valves. One is called the intake valve. , one is called the air outlet valve. When the piston is pulled outward, the air inlet valve opens and the air outlet valve closes, drawing air into the air tank. When the piston is pushed inward, the air inlet valve closes and the air outlet valve opens, pumping air into the air tank. The air is discharged."
He pointed to the connecting rod and runner behind the metal can and said, "This is called the crank connecting rod device. Its function is to convert the rotation of the runner into push and pull. Of course, the reciprocating motion of the piston can also be reversed in other machines. Then, we can move the piston in and out of the gas tank by shaking the crank."
After listening to his introduction, Wells sincerely admired: "It is indeed a wonderful device. So, is Mr. Grayman going to use this air extractor to evacuate the interlayer of the bottle into a so-called vacuum?"
"Yes." Paul snapped his fingers.
“When making this thing, the piston inside was a bit troublesome. Originally, I used linen soaked in oil, but the piston was not tight enough and it leaked when I pumped it. Later, it was A working piston is made from animal leather ”
As Paul spoke, he picked up a short metal tube and connected one end to the hole in the glass bottle and the other end to the air inlet of the air extractor. Both ends of the short tube were wrapped with a thin layer of leather, which should be the same. Used to ensure air tightness.
After doing all this, Paul shouted: "Here comes someone!"
The door of the workshop was pushed open, and the guard standing outside walked in. "Master Graiman, do you have anything to tell me?"
Paul pointed at the wheel behind the air extractor and ordered: "You come and shake it."
The guard looked at He glanced at the air pump and was a little confused, but he still obeyed the order, walked to the machine, held the crank handle with his right hand, and started turning it. As he shook it, the rotating wheel began to push the connecting rod to expand and contract, constantly pushing and pulling the piston in the gas tank.
Thirty people, Paul, Wells, and Burns, looked at the bottle without moving their eyes.
In the eyes of Wells and Burns, nothing seems to have changed. After all, the air is inherently transparent.
Only the connecting rod that pushes the piston is constantly moving, but gradually, they see that the guard who is shaking the handle is obviously increasing his strength, and then, it seems that shaking the handle makes him more and more powerful. Feeling strenuous.
The air outlet valve of the air extractor is closing and closing, which proves that the gas is being continuously eliminated. However, at this moment, something unexpected happened. With a bang, the double-layered glass The bottle actually shattered and turned into a pile of fragments. Fortunately, the bottle did not explode and no one around was hurt.
This change shocked everyone. Wells and Burns stared at the glass fragments blankly, while the guard was even more stunned, and could even be said to be at a loss.
"Lord Grayman, I'm sorry, I...I didn't expect to break him." The guard blushed and apologized to Paul continuously.
"Ah, it's okay. This could have happened."
At this time, Wells and Burns noticed that the count's face was calm, as if he was worried about it. The shattering of the glass bottle was no surprise.
“It’s strange.” Guy Burns scratched his head and asked, “Why did the glass bottle break? It wasn’t hit by anything.”
Yes. , everyone was staring at the unfortunate bottle, and nothing flew over to hit it. "Yes, why did the bottle break?" Paul also asked, but to Wells' ears, there was no sense of doubt in the earl's words.
“There must be something there that exerted [force] on the bottle, so it broke.” Paul said.
What could it be? After listening to the count, Wells thought, it seems that there is only air around.
Hmm, air? Haha, joke. He pushed the thought out of his mind.
"Well, anyway, we have to have a stronger bottle, maybe thicken the walls of the glass bottle." Paul concluded, "I have to find someone to make it again. Ah, by the way, Wells.”
Paul looked at the alchemist, "What do you want to see me for?"
Ah, by the way, he can come to the lord with important matters. Wells remembered the purpose of coming to the lord's mansion. .
"Well..." He said with some anxiety: "Master Graiman, I have a student, he..."
"What happened to him?" Paul waited for Wells Go on.
"Well...he is a very talented person in chemistry, with an active mind and excellent grades. He has helped us a lot in the laboratory."
"Hmm, so what? Do you want me to grant him a position? Aren't you and Hoffman responsible for everything in the chemistry laboratory? You don't need to come to my place." Paul was a little confused, and Will Did Si come through the back door? Or he and Hoffman have any differences in the treatment of this student, and he needs to adjudicate.
"But unfortunately..." Wells lowered his head and whispered: "This student... his surname is Fadeev."
Fadeev? Paul narrowed his eyes. If he remembered correctly, Fadeyev seemed to be a member of a certain squire family involved in the rebellion.
"So...this student of yours..." Paul's tone lost his previous enthusiasm, "Is he staying in jail now?"
The interrogation of the rebels is currently under way. During the process, all the families involved in the rebellion were detained as a whole.
"Yes, Lord Grayman."
"So, what did you come to me for?" Paul asked Wells again about the purpose of coming here, with a hint of impoliteness in his words .
Wells felt the change in the count's tone, and his heart beat faster. The count seemed to be very sensitive to this.
"I would like to ask you, Lord Graiman, if you...can you please be accommodating to this student of mine."
Wells spoke out his request carefully. , Coming from Jingyao, he knew that many lords treated those who were related to the rebellion. At worst, they would expel and exile them, and if they were more ruthless, they might kill them all.
He didn't believe that his student would actually participate in the rebellion, but what would the count think?
(End of this chapter)