In the past few days, Zhu Youzhen has been really excited.

Since Li Yusheng and Liu Shanzhong came to the Qianqing Palace, there are now three important civilian technologies in front of her, the spinning wheel was handed over to Liu Qianzhi, and the matter of the self-striking bell was handed over to Tang Ruowang.

But when it comes to rubber tires, he still needs to do it himself.

In the history of later generations, Zhu Youjian rode a bicycle to and from work, and had a basic understanding of the structure of the bicycle, rubber tires are generally divided into two layers, the outer tire is hard and thick, acting as a protective layer of the inner tube, and the valve on the inner tube is not difficult to make, but how to make an inner tube without a gap is stumped for him.

In later generations, this was a pediatric technique, and it would not even be recorded in books, and he did not have any information to draw on now.

Fortunately, Li Yusheng sold a huge amount of rubber, and there were enough materials for the craftsmen to test, and Zhu Youzhen did not set a timetable for the craftsmen.

The first to come out was the Academy of Sciences, according to the drawings, John Tang completely understood the production process of the chiming clock, because he was proficient in Chinese, directly remade a production drawing in Chinese.

"It's too exquisite," looking at John Tang's production drawings, the old craftsman felt incredible, "Your Majesty, according to the drawings, maybe we can produce the own chiming bell." ”

"What do you mean maybe?" Zhu Youzhen was puzzled, "Can you produce it?" ”

"Your Majesty, these steel bars, these gears, are so delicate that it is difficult for us to produce parts of the same size." After these craftsmen entered the R&D Institute, everyone's technology and craftsmanship were purchased by Zhu Youjian, and their craftsmanship already belonged to the R&D Institute, not individuals, and now everyone cooperates, but with their technology, it is estimated that they may not be able to manufacture such exquisite parts, and it is even more difficult to repeat a large number of them, and the specifications are the same.

It turned out to be a question of product specification, and Zhu Youjian could only find the answer from later generations, "Mold, you first produce a set of molds according to the size of each part, since the mold is certain, the parts produced, of course, the size will be the same." ”

"Your Majesty, the grass people understand that if the corresponding molds can be produced, when the factory is established in the future, it can be divided into multiple production units, and each production unit is responsible for the same main part, and the assembly line production can be realized." Assembly line production, not only in the Daming Arms Bureau, but also in the various fields of the Royal Office, these craftsmen have long been familiar with it.

The craftsmen were already looking forward to their share of the bonus, but Zhu Youzhen returned to the Qianqing Palace, and the first thing he did when he came back was to see Liu Qianzhi.

In the warm pavilion in the last row of the Qianqing Palace, Liu Qianzhi was spinning, and the two palace maids used their fingers to assist in dividing the cotton, and the cotton passed through their hands once, and it would become more even, Zhu Youzhen came to wait, and happened to see a cotton thread broken, and a palace maid was hurriedly wiring, Liu Qianzhi stopped the spinning machine and heard a burst of footsteps.

"Your Majesty......" Liu Qianzhi prostrate in front of Zhu Youzhen.

"Miss Liu doesn't need to be polite, she is in the palace every day," Zhu Youzhen motioned for Liu Qianzhi to get up by herself, "How is it, is there any progress on the spinning machine?" ”

"Your Majesty, it still doesn't work," Liu Qianzhi shook her little head from side to side, throwing the beads of sweat off her face, "Because there are too many spindles, there is also the imagination of mixing together, and in addition, the problem of broken cotton threads cannot be solved." ”

"Ao, a great invention, of course it's not so easy," Zhu Youzhen estimated that too, the two palace maids were hurriedly assisting Liu Qianzhi, that is, three people were spinning, not one, and it was far from Jenny's spinning machine, "Miss Liu, you try again, I am watching from the side." ”

"Yes, Your Majesty." Liu Qianzhi sat down, just as the palace maid had already connected the broken cotton thread, and Liu Qianzhi carefully spun it.

After a while, the two cotton threads in the middle were mixed together, and Liu Qianzhi had to stop and let the palace maid untie the two cotton threads, "Your Majesty, you see...... Hey......"

This is indeed a problem, if you can't solve the problem of mixing a few cotton yarns, the spinning machine cannot succeed, Zhu Youzhen turned around the spinning machine, and found that Liu Qianzhi fixed the wooden frame of the spinning cooked cotton on the front of the spinning machine, so that the distance between the cotton threads in the air is already very short, but the spindle is below the back of the spinning machine, and the two are not on a horizontal line.

"Miss Liu, raise the rungs that hold the spindles up a little more so that they are on the same level, and add a baffle to the front of the wooden box containing the cooked cotton."

"Your Majesty, moving the yarn spindle up can shorten the length of the cotton thread on the outside, but if you add a baffle in front of the wooden box, can the cooked cotton still run forward under the pull of the cotton yarn?" Miss Liu had already stood up from the square wooden bench and stuck it to Zhu Youzhen's left hand side.

"On the front baffle, dig eight thumb-thick holes, and let each cotton thread come out of the hole." Since there is a certain distance between each small hole, Zhu Youzhen believes that the cotton threads will not be mixed together.

"Your Majesty, the grass people understand, so that there will be a fixed interval between the cotton threads, and they will never be mixed together again," Liu Qianzhi was even happier than Columbus discovered the American continent, "Your Majesty, when the cotton thread comes out of the small hole, it is equivalent to passing through the palm of your hand, and the cotton thread will be thin and even." ”

"Well, you go ahead and experiment, actually, I don't know how big this hole is, you ask them to make a few more pieces, and then see how big the hole is the most suitable."

"Yes, Your Majesty," Liu Qianzhi sent Zhu Youzhen away, turned around and instructed the little eunuch, "Quick, according to Your Majesty's instructions, make a few of these baffles, as for the size of the holes...... Make one piece from the little thumb to the thumb, the distance between each hole should be equal, and the edge of the hole should be wrapped in silk cloth to prevent the cotton yarn from being scraped. ”

"Yes, Miss Liu, we'll do it right away." The two little eunuchs ran away.

After the little eunuch's work day and night, the next morning, the five baffles that fully met Liu Qianzhi's requirements were ready, and Miss Liu quickly ate breakfast and began her great dream of invention again.

This time, Miss Liu found that the problem of cotton thread mixing was solved, and the spun cotton thread was similar to what she imagined, thinner and even than the original, but the problem of yarn breakage still existed.

Liu Qianzhi stopped the spinning wheel, and her mouth was so pouting that she could hang up a spindle, "Why is it that every time Your Majesty comes, you can solve some problems, but I can't solve anything?" Am I too stupid? ”

The palace maids and eunuchs were just giggling on the side, and they didn't dare to disturb the obsessive young lady.

"What are you laughing at?" Liu Qianzhi can't wait to find someone to fight and completely get rid of the evil spirit in her heart.

A palace maid bit her lip and said, "Miss Liu, how can you compare with Your Majesty?" Your Majesty is the Emperor, the power of heaven is unpredictable, and our Majesty is omnipotent. ”

"Anything?" Liu Qianzhi was thoughtful, and she silently read in her heart: Could it be that Your Majesty already knew about Jenny's spinning machine? Did he deliberately reveal only a little bit at a time? What exactly is this for?

The palace maids and eunuchs looked at this Dazed Miss Liu, and just shook their heads and sighed.

It happened that Zhu Youzhen came to see Liu Qianzhi's spinning wheel, and Liu Qianzhi obviously saw Zhu Youzhen, but she sat on a square wooden bench, propped up her right arm to support her cheeks, and didn't look at Zhu Youzhen.

Zhu Youzhen felt strange, usually Liu Qianzhi was full of energy on the spinning wheel, why was she in a daze today? She deliberately straightened her face and drank at the eunuchs and palace maids: "Which of you upset Miss Liu?" ”

"Your Majesty......" The eunuchs and palace maids were so frightened that they knelt down in front of Zhu Youzhen one by one, "We didn't make Miss Liu angry. ”

"Oh, then get up!" Zhu Youzhen saw that Liu Qianzhi looked indifferent, so he asked, "What's the matter, Miss Liu?" ”

"It's all you!" Liu Qianzhi didn't look back, continued to sit on the square wooden bench, and didn't check Zhu You's luggage.

"Bold! How dare you talk to Your Majesty like that? Zhang Yixian shouted and reprimanded.

Zhu Youzhen stretched out his hand to stop Zhang Yixian, "What's wrong with me?" He was really puzzled, "Hasn't the spinning machine been studied yet?" ”

"Your Majesty," Liu Qianzhi became even more annoyed when she said about the spinning machine, "Your Majesty obviously knows about Jenny's spinning machine, why didn't you tell the people's daughter?" Let the folk girls work hard? ”

"Will I make Jenny's spinning machine? Says who? Zhu Youzhen's gaze turned to the eunuch palace maid beside Liu Qianzhi, "Which of you said that?" ”

"Your Majesty, the slaves and maids don't have it, how dare the slaves and maids talk too much?"

"Your Majesty, it doesn't matter who said it," Liu Qianzhi finally stood up from the square wooden bench, her face full of anger: "Your Majesty obviously knows the manufacturing method of Jenny's spinning machine, why didn't you say it at once?" ”

"Then how did Miss Liu know that I would make Jenny spinning machines?"

Liu Qianzhi asked rhetorically: "Isn't Your Majesty omnipotent?" ”

"Anything?" Zhu Youzhen smiled slightly, "This kind of rumor that Miss Liu also believes?" ”

"But...... However, every time His Majesty comes, he will improve the spinning machine, which ...... What's going on? ”

"That's why?" Zhu Youzhen laughed, "Every time I watch Miss Liu spin, I can naturally see some famous names - if I could make Jenny spinning machines, I would have opened a spinning factory near Jingshi a long time ago, and I would have waited until now?" ”

"This ...... Doesn't Your Majesty really know Jenny spinning machine? Liu Qianzhi's eyes widened, looking innocent, "Minnu...... How do the people feel that as soon as Your Majesty comes, she will be able to find out the problem......"

"That's because you're just focusing on spinning, so naturally you can't see how to improve," Zhu Youzhen chuckled: "Don't go spinning yet, otherwise how can I find the problem - what are the problems now?" ”

Liu Qianzhi obediently returned to the square wooden bench, and while spinning, she replied: "It's still a problem of broken yarn." ”

As Liu Qianzhi said, she spun for a while, and just as she was about to speed up, there was a problem of broken yarn again, this time Zhu Youzhen was really out of line, he had to look at Liu Qianzhi with a wry smile, "I don't see where the problem is." ”

"Your Majesty," Zhang Yixian whispered to Zhu Youzhen, "Maybe if you change to a skilled spinner, the effect will be better." ”

Zhu Youjian understood, although Miss Liu can spin, but she was born in a wealthy family, she will never spin for a long time, and if she is not skilled, there will also be the problem of yarn breakage, "Yi Xian, find two skilled spinners from outside." ”

After about half a day, the problem of yarn breaking was finally solved, and they did not modify the spinning machine, but changed the strength through dexterous fingers.

"Your Majesty, is this Jenny's spinning machine?" Liu Qianzhi was full of joy, no matter what the reason, the spinning machine she was looking forward to was finally successful.

"It should be a success," Zhu Youzhen was also secretly happy in his heart, "As for the improvement in the future, it is up to you." ”

"Well," Liu Qianzhi looked at Zhu Youzhen, her eyes were blurred, "Your Majesty ......"

"What, homesick?" Zhu Youzhen laughed, "I have an appointment with your father for a month, but I didn't expect Miss Liu to be too smart, and the spinning machine was completed in less than half a month." ”

Liu Qianzhi's big eyes suddenly lost their brilliance, and she said hesitantly: "Your Majesty...... Since I have an appointment with my father, the time has not yet come, and the folk girl wants to ...... Think...... Temporarily stay in Jingshi for a period of time. ”

"Stay in Jingshi? Miss Liu, haven't you already succeeded? ”

"Your Majesty, the daughter of the people...... The folk girl was reluctant to leave the capital...... Didn't Your Majesty say that there is still a spinning machine that can install fifteen spindles? If the folk girl goes back, once there is a problem with the spinning machine, there is really no one to guide the folk girl. Liu Qianzhi finally found a reason to stay.