Chapter 025: Have you ever seen a pump?

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In the sixth year of Guanghe, 183 A.D., spring, March, amnesty was granted to the world.

Amnesty is a common means used by ancient emperors to sell the people well and earn fame in the name of benevolence. For example, when a new emperor ascends the throne, changes the name of the era, establishes an empress, establishes a crown prince, etc., or encounters natural disasters or major disasters, he often issues pardons to amnesty criminals.

On the surface, the emperor showed his authority and played with the law by giving amnesty to the world at every turn, but in fact they also had a clear purpose, and they were not completely patting their heads on the ground. parentheses, although occasionally inexplicably pardoned.

Generally speaking, the more the emperor felt that his rule was unstable, the more often he pardoned the world. For example, Liu Bang, the ancestor of the Han Dynasty, reigned for 12 years and granted amnesty to the world nine times. On the contrary, Emperor Wu of Han's son, Emperor Ming of Han, reigned for eighteen years, and he did it three times. It can be seen that the stability of imperial power is inversely proportional to the frequency of amnesty.

And "Liu Xiaobian", the cheap father, the famous Emperor Liu Hong of the Han Dynasty, has reigned for 22 years in history, and has carried out 20 amnesties in the world, basically once a year, like holding a New Year tea party.

No matter how much or how little it is, in Liu Hanshao's view, this in itself is absurd, funny and incomprehensible, because the amnesty of the world is not about giving benefits, but about pardoning criminals. If you want to sell well and earn fame, even if you give a steamed bun to the people, what if you want to let go of the criminals for Mao? If the criminals are the children of good people who have been wronged, it means that the ruler is confused; If the criminals were not wronged and let them go back and continue to plague the people, wouldn't it be even more confusing?

No wonder in the tavern in Zhuoxian County, when the little red face first met Liu Beibei and the little black face with big ears, he dared to say: "My surname is Guan Mingyu, the word Changsheng, and later changed to Yunchang, and Hedong Xie Liangren also." Because of the local situation, he was killed by me, fled to the rivers and lakes, and ...... for five or six years, "Isn't it, it's been five or six years, and the amnesty is in the world, and the bleaching is enough to bleaching and peeling off the skin several times."

However, an old boy like Cai Yong is really blessed by the amnesty of the world, otherwise he might not be able to comb his pigtails now!

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Whoever they love or not, who they forgive, who is comfortable.

Liu Hanshao can't take care of these now, it hasn't rained for a long time, the old village chief Liu Dagen and experienced farmers are predicting a big drought this year, and implore Liu Hanshao in the upper and lower realms to exert his magical powers and think of a way. It seems that Shi Laodao's fooling work is doing a good job, and the people of the entire craftsman farm village worship Liu Hanshao as a god, and Liu Hanshao really has a hard time. He especially wanted to say to everyone: "Brothers, my brother's sneezing will not turn into rain, and soaking in urine will not quench his thirst!" ”

Originally, this shouldn't be a thing, Ma Jun, who invented the overturned car in history, has now become Liu Hanshao's apprentice, the problem is that first, he is still young, and he doesn't know if he can do it; Second, the overturned car is also called the keel waterwheel, which is a wooden trough, with a scraper in the middle, regardless of pedal or rotation, driving the scraper to scrape the water, which is only suitable for taking water at close range, and the water lifting height is also limited; Third, even if the technical difficulties are overcome, it is not possible to go to the big river to build a large water wheel at present, which is not equivalent to revealing the secrets in the mountains in the north to the world.

Fortunately, Liu Hanshao didn't count on him, and after thinking about it alone, he finally thought of a way that he thought was feasible. I saw Liu Hanshao suddenly running out of the principal's office, and instructed Yan Dawa as he ran: "Go, call Ma Jun to the carpenter's workshop." The friends don't know why, but they don't delay running with Liu Hanshao, Ren Hongchang, Yun Daniu and Wei Guangzheng, none of them are left behind.

Ma Jun was still in class, and when he heard Liu Hanshao's "pet move", he jumped out of the classroom after a while, and when he ran to the carpenter's workshop, Liu Hanshao and his friends surrounded a carpenter and were directing him to see the bamboo tube.

"Master, what are you doing here?"

Liu Hanshao glanced at Ma Jun and said casually: "It's here." Have you ever seen a pump? ”

"Nope!"

Ma Jun answered very honestly, and secretly wondered what the master was talking about.

Liu Hanshao's brain is black, he really wants to give himself a mouthful, for several years, his crossing syndrome can't be cured.

"Look at the dots carefully and take notes."

Liu Hanshao has always lacked explanations for things made out of nothing, in addition to wasting saliva, he is also afraid that the more he explains, the more people will not understand. And Ma Jun is not accustomed to getting to the bottom of things, it's not that he doesn't like to learn, but he just thinks that since the master refuses to say it, there must be a reason not to say it, maybe it is to exercise his thinking ability, so he prefers to ponder by himself.

Command the carpenter to sawn a long and smooth bamboo tube from one-sixth of the way, two holes in the bottom of the bamboo tube, and then two thin bamboo pipes, and two semi-circular wooden stoppers like small bowls were fastened respectively, and then connected to the two openings. brackets, which must be buckled in the same direction; In brackets, the pump only needs to have a plug at the air inlet, because the air outlet is wrapped in an air rice core, so it naturally cannot return air.

After doing this, cut a round piece of wood compared to the inner diameter of the bamboo tube, and then connect a wooden stick as a pusher. Finally, the bamboo tube is cut on the outside, the bamboo cover is cut on the inside, the bamboo cover passes through the push rod, buckles back to the bamboo tube, and a pure handmade pump is done.

"Reach out."

Liu Hanshao tried to push twice, and then asked Ma Jun to put his hands on both ends of the air outlet and push again. Ma Jun looked at this strange thing with some surprise, and obviously felt that one breath kept inhaling and the other kept exhaling.

"Master, is this what you are doing to draw water?"

"What a smart baby, let's try it in a basin."

After a while, someone brought over the basin, and Major General Liu Han submerged the air inlet slightly at an angle, pushed the pusher, and sure enough, water sprayed out from the air outlet. Everyone was overjoyed to see it, Liu Hanshao laughed even more, and then summoned Ma Jun to guide him and said: "Jun'er, using this thing to draw water from the well can get twice the result with half the effort, but you must pay attention to sealing." ”

"Sealed?"

"That's right! You look at this piston, the tighter it matches the inner diameter of the bamboo tube, the greater the suction power generated, but too tight may lead to stuck or difficult to push and pull, so it is best to loosen a little, cover the circumference with cloth skin, and the cloth skin will expand when it encounters water, and the inner diameter can be tightened. In addition, these interfaces must also be sealed with attention, otherwise if there is air leakage, it will only be half the effort, or even unable to absorb water at all. ”

It's a pity, there is no rubber as a sealing ring, Liu Hanshao can only think of using cloth to replace it.

Ma Jun nodded frequently when he listened, quickly recorded new words and experiences in his small blackboard exercise book, and did not forget to ask Liu Hanshao questions.

"Master, what's the name of this thing? In addition, the disciple thought that if it was to be used above the wellhead, it would be better to open the water inlet at the bottom, so that the bamboo pipe that could easily absorb water could be directly extended into the well. ”

Okay, in the end, it's a gifted baby, and you can see the trick at a glance, in fact, the suction port of the hand pressure water pump itself is at the bottom of the bottom.

Liu Hanshao nodded with satisfaction, and said praisefully: "Well, what you said is reasonable, then what do you think this thing should be called?" ”

Ma Jun said solemnly: "The disciple can't think of it, or ...... It's called the Water Sucking Dragon? ”

Burst...... He became a god again.

Liu Hanshao is also helpless, there are too many gods, so the ghost believes it!

"Water pump! Let's call it a hand-pressed water pump. You design the drawings, calculate the appropriate dimensions, and then go to the blacksmith's workshop to guide them to make them and try them out. ”

Two days.

Just two days later, Ma Jun came to Liu Hanshao in a hurry and asked him to watch the trial effect of the hand-pressed water pump. One has been erected on the well near the school cafeteria, and the mouth of the well is also covered with thick wooden planks. Not only the curious children in the school, but also the surrounding artisans and farmers also came to watch, the inner three layers and the outer three floors, if it were not for the wellhead has been covered, it is not clear who can really squeeze into the well.

Ma Jun said that in order to prevent inhaling too much sediment, he also had people wrap sackcloth around the head of the absorbent bamboo pipe, while Liu Hanshao was more concerned about two wooden sticks, one vertical and one horizontal, by the well. The vertical is the bracket, the horizontal is the lever, yes, the lever principle. Curious people took turns to step forward and press the lever a few times, regardless of whether the old man or the little baby could press it, and the water flowed out in a hurry. The hand-pressed water pump in front of him is no different from what Liu Hanshao saw in his rural home in his previous life and later life, and if this thing is promoted, the history of shaking water with a wheel will probably end here.

While the iron was hot, Liu Hanshao was already ready to order the blacksmith workshop to make hand-pressed water pumps, and planned to install all the wells, but Ma Jun quietly pulled Liu Hanshao's sleeve, and his face was worried.

As he walked out of the crowd and came to a secluded place, Ma Juncai spoke: "Master, although the hand-pressed water pump is good, it is only convenient for the people to cook and wash, ordinary use, if it is watering the land and raising the fields, I am afraid it will ......."

Things are done under the guidance of the master, and Ma Jun does not dare to say that it is not good, but he must also express his own opinions and worries.

Yes, the hand pressure water pump is convenient, but if you want to water the land in drought resistance, it is obviously not enough to see the amount of water it outputs, even if it makes people press day and night, compared with dozens of acres of fields at every turn, it is not a little baby peeing.

Liu Hanshao walked back and forth with his head down, and touched his chin from time to time, but he couldn't touch anything. The eyes of the friends wandered along with Liu Hanshao, touching their chins from time to time, but they couldn't touch anything. Oh, Wei Guang is the one with stubble......

Suddenly, Liu Hanshao stepped on a small branch, and a smaller branch that was lying across the other end of the branch was immediately bounced out.

In a flash of inspiration, although we are not Brother Yixiu, but Brother Wandering is not in vain. Liu Hanshao turned around and asked Ma Jun a little excitedly.

"Have you ever seen a seesaw?"

"Nope!"

Ma Jun replied truthfully, but looking at Liu Hanshao's eyes, a small light had already radiated, and it was obvious that the master had a new trick.

asked people to find a long wooden plank, put it in the middle, and then Liu Hanshao sat at one end, let Yan Dawa sit at the other end, and swayed together. Seeing that everyone was still confused, Liu Hanshao suddenly got up, causing Yan Dawa to fold back directly. I saw Liu Hanshao pick up two stones and put them at both ends of the seesaw.

"Oh......"

Ma Jun looked suddenly enlightened, and then said: "But the well is ......."

Liu Hanshao stretched out two fingers and shook them proudly in front of his eyes.

"Understood?"

"Understood!"

The friends still don't know what dumb riddles Liu Hanshao and Ma Jun played, but Ma Jun has already jumped around, leaving only Liu Hanshao half-squinting, and the old god is there.