Release that Witch Chapter 23: The source of power

"Come, try to put these two iron plates together," Roland said.

Anna extends takes action, pressing on the seam of the iron plate. The flame blew from the fingers, and the interface melted at a speed that was visible to the naked eye.

"Reduce the firepower, do it again on the back."

She nodded and repeated it. The two iron plates were spliced ​​at 90 degrees and were firmly welded together.

Roland carefully checked the lower interface, and found that the effect was as perfect as -- without any flaws. If you polish it a little and remove the fluid traces during the melting of the iron, the two iron plates are almost the same as the forged body that was formed at one time.

"Very good, Ms. Anna, it's awesome," Roland couldn't help but sigh, "Next, we will also connect the other two iron plates."

"What is this? An iron ... bucket?"

"No, this is a cylinder," he corrected.

"Cylinder?" repeated Anna Confusedly.

"Yes, it can be used to fill air," Roland pointed to another square iron plate, "Did you see the small hole above? Air enters the cylinder from this small hole, pushing the piston --, uh, the piston is a ratio The iron plate with a slightly smaller inner diameter of the cylinder can move freely in the cylinder. "

Even Anna, fainted in the face of so many words, "Then ... what are the cylinders, pistons, etc. for?"

"To make a machine that moves automatically."

steam engine brought the motive force required for the first industrial revolution of mankind, and completely liberated manpower and animal power.

The schematic diagram is familiar to every mechanical dog. To put it simply, it is an enlarged version of the kettle. The boiled steam is introduced into the cylinder, which pushes the piston and connecting rod to convert thermal energy into mechanical energy.

The principle is extremely simple, but it does not mean that it is easy to manufacture. Its difficulties are the tightness of the cylinder and the piston, and the manufacture of the gas pipe. When metal processing is not enough, you want to produce a qualified cylinder by hand forging is fantasy story.

However, the capabilities of Anna make up for the shortcomings in technology.

Roland As long as four iron plates of the same size are designed in advance, the smithy will be cast and polished, then the shape will be fixed with a right-angle plate, and then welded by Anna to obtain a square cylinder with extremely high rigidity. With the help of witch, he doesn't have to build a barrel boring machine like the traditional production process, and then process a circular cylinder. The same is true for other large parts, which can be made into small pieces before splicing. In this way, even small workshops such as blacksmiths can work together to produce all the parts required by steam engine.

In fact, before welding was invented, people could only connect small parts by bolts or rivets, and the interior of the cylinder must be smooth, which is obviously not possible with conventional connections.

The only trouble is the gas pipe. There is nothing special about its manufacturing method. A long iron plate is burned to red heat, and then it is placed in a grooved mold and hammered with a hammer to a shape. This is also the method of making a front-mounted hairgun barrel. . It's just that the barrel needs to be straightened afterwards, the rifling is expanded, etc., which is more complicated.

The trouble is that Roland impossible called the blacksmith to his back garden. witch can't be exposed for the time being. Ironing is not his own strength. In desperation, he had to let Chief Knight do the work for him and direct himself.

Just toss for three days like this, Roland finally spelled the first steam engine in the backyard.

"Is this your powerful stuff?" Carter frowned at this strange machine. He first confirmed that this stuff had nothing to do with cult rituals. Each iron goblet above was mounted by himself, and looked like a sealed stove. It would be unreasonable if Devil could be attracted to it.

But how do a bunch of iron golems move? It looks awkward and footless. Can Is it possible still fly?

But in the eyes of Roland, this seemingly humble machine exudes the beauty of industry. Standing on the shoulder of the giant, he naturally did not follow the route of Newcomen steam engine -- Watt steam engine -- to improve steam engine. His first prototype was a high-pressure steam engine with double connecting rod and sliding valve. Its production is not much more difficult than the original steam engine. The key lies in some innovative ideas.

"You'll know later."

Roland pours buckets of water into the steam chamber and lets Anna ignite the firewood.

Ten minutes later, the water was boiled and rumbling. Soon, there was a crackling sound in the cylinder, and Roland knew that it was the sound of the cylinder's thermal expansion. The iron plate of the piston is thinner, and the expansion variant is larger than the cylinder body, and it will eventually bear firmly against the cylinder wall.

"Isn't this boiling water? I didn't expect it to be a stove," Carter muttered.

When the cylinder was filled with steam, a scene that made Roland extremely excited appeared. The piston started to push the connecting rod outwards. When it reached the apex, the other connecting rod pulled the sliding valve, and the steam pushed the piston inward. The two connecting rods spun back and forth quickly with the wheels. As the firepower increased, the speed reached its peak quickly.

The machine emits a harsh roar, and the exhaust vent exhales white gas, with an overwhelming momentum.

"That's what you said ... the power hidden in nature?" Anna asked blankly.

Chief Knight is incredibly embarrassing. The last big iron wheel was installed by him with great effort. Now it spins like a feather. Standing next to it, you can even feel the air from the wheel. -- This only shows that the strength of this iron golem is so amazing.

His bottom of heart gradually grew a little uneasy.

His Royal Highness said that it could replace manpower and animal power. If it is not to lie to itself, when it replaces horses to pull chariots, this brute force alone is afraid that ten Knight will be difficult to resist.

It takes fifteen years to cultivate a qualified Knight, and it takes only three days to make an iron furnace like this. Counting the time it takes a blacksmith to build a part, it's only a week.

It doesn't need feeding, it's not afraid of cold and hunger, and it's not afraid of arrows and knives. As long as the front is equipped with a collision angle, it can run on the battlefield.

So ... does the traditional Knight still need to exist?

*******************

In the evening, when Roland returned to the bedroom, he saw Nightingale again.

She did not wear Hood this time, sitting at the table with a smile on her face, fiddled with a few pieces of parchment, "It seems that the rumors outside can't believe it. They all say that Fourth Prince is unskilled, bad character, practical It ’s better than the court master. What is drawn on this paper is the design of the iron stove? You call it steam engine, right? ”

If I go, can I leave some privacy for you? Come whenever you want and leave if you want to. You think this is your home! Roland was so defamated, and still casually replied, "It's a design drawing, but without the help of Anna, it's just a drawing."

"What can it do?"

"A lot, mine transport, drainage, iron smelting, forging, wherever it takes a lot of effort, it can play a role."

"Then I accept it," Nightingale put the sheepskin paper roll into his robe. "There are people in Cooperation Association who can control the fire."

"Hey --"

She waved her hand to stop the Roland protest, "Of course, I'm not taking your things for nothing, you look at this first." She put a small group of white things on the table.

Roland walks over, picks up with your fingers, and finds that it is actually a roll of paper.

He unfolded gently and glanced, "This is ..."

"Secret letter for pigeon carrier," said Nightingale in a playful tone. "The recipient is your Head maid Tyre. Well, it looks like your harem is not stable."

"I haven't touched her," Roland frowned.

Tyre, this woman in memory seems to have followed her very early. Originally Fourth Prince was quite interested in her, but she couldn't succeed after several harassments. This time she came to Border Town to promote her to Head maid, and waited for herself, her room was arranged next door. Didn't expect it to be the eyeliner arranged by Royal Brother Royal Sister?

Although this letter is not signed, according to the content, it is likely that it was written by the brothers and sisters. The letter reads that the host was very displeased by the last failure. The next time during the Longsong Stronghold riots, he will never be allowed to fail again. Well, in fact, you have already succeeded, he thought, otherwise he would not be Roland Wimbledon.

This letter is unlikely to have been forged by Nightingale, because only those involved in the plot will know the first assassination plan clearly. If Nightingale wants to kill himself, there is no need to be so troublesome.

"Did you steal from her?"

"Your Head maid isn't that stupid, she's going to burn it after watching it. Unfortunately, I happened to be behind her when she watched," she made a package adjustment, "So, what are you going to do? Need my help to "handle"? "

Roland naturally understands that the treatment in her mouth is What does it mean, hesitating for a moment, he finally nodded, "Trouble you." He really didn't have the confidence to do it himself. "If you can ... ask for me, Who's behind her. "

"as you wish, Your Highness," Nightingale bowed and saluted with a smile, "then, this drawing is a reward."