Finally, in the front yard, I watched Liu Shang personally operate and polish a brass gear on the double pedal machine, and played with it in his hand, and a group of people came to the backyard.

Jin Dahu first took Zhu Yuan to the three public houses located in the East Chamber.

Here are a few simple desks that are very in line with Zhu Yuan's style, with various bookshelves and bookcases on both sides, a wide desk covered with various books and artwork, and some semi-assembled mechanical structures.

Zhu Yuan took a sheet and looked at it, and Jin Dahu on the side followed and introduced: "After the lord ordered, the Ministry of Industry also came to call the officials to get a lot of documents and drawings back, all of which were from the treasury of the previous dynasty. Not...... This one, ashamed, was drawn by Xia Guan. ”

When I chose Jin Sanhu to be the steam engine, it was because the other party could draw, and when I looked at the drawings in front of me, Jin Dahu's level was higher, and there were beautiful charcoal pencils on the drawings.

I also knew in my heart that I was ashamed, but in fact, Jin Dahu deliberately put it in a conspicuous place, hoping that he could see it.

Zhu Yuan didn't mind this kind of careful thinking of his subordinates, but just gestured to the one in front of him: "This, it should be the escapement system, right?" ”

The escapement system is the core of mechanical clocks, and Zhu Yuan doesn't know much about it, but in the era of the information explosion, he has also heard it, and he gradually thinks about the 'crystal carving' at home every day.

To put it simply, the escapement system evenly distributes the force transmitted from the mainspring to every minute and every second, so as to achieve a uniform speed of the clock.

As for the more specific, Zhu Yuan can only recall the isochronism of a pendulum.

However, the 'crystal carving' at home does not have a pendulum.

I don't know if it's inside, and Zhu Yuan didn't let people take it apart.

When I was a child, like many children, Zhu Yuan also liked to dismantle things, but unfortunately, Zhu Yuan had no genius in this regard, and the things he disassembled were never installed.

I still remember the biggest thing I've ever repaired, the TV at home.

Then the TV was changed at home.

Comes with a beating.

Then, Zhu Yuan no longer has any confidence that I can disassemble and I can also install, and he will not easily disassemble things.

"Escapement...... I want to capture the old and indulge," in the room, Jin Dahu read a sentence, with an epiphany expression: "My lord, this structure, in the past, there was no serious name, the adult gave it a 'escapement', but it is really appropriate, if the adult agrees, it will be called escapement in the future." ”

I'm named again?

Think about it again, the word escapement probably evolved after modern clocks were transmitted to China, and before that, there should have been none.

However, this structure counts the timeline......

It's still from China.

After all, I haven't forgotten that Jin Sanhu accidentally mentioned it before, and the leak in front of him evolved from the 'Water Transport Elephant Terrace' built by Su Songdu, the prime minister of the Song Dynasty.

That was two or three hundred years ago.

The Yuan Dynasty succeeded the Song Dynasty and conquered the world, and the Mongolian nobles moved westward, and they definitely did not only bring horses, but also all kinds of good things.

So......

Not to mention the 'four great inventions' that I talk about every day, there are too many, too many.

Just after thinking about it briefly, Zhu Yuan no longer thinks about it, it doesn't make sense, and this time it's definitely different, good things, we will definitely stay at home.

Seeing that Zhu Yuan was fascinated, Jin Dahu diligently moved the chair over, and found one from the various mechanical structures on the table, and carefully sent it forward: "My lord, this is the escapement." ”

In the end, there is no realistic image of the mechanical structure in the drawing, Zhu Yuan looked over, Jin Dahu asked for instructions, stretched out his hand and twisted the clockwork, and the clicking sound sounded on the mechanical structure in front of him.

If you look closely, you can see a bunch of gear-connected escapements, which resemble a seesaw, with grappling hooks on both sides constantly reciprocating up and down, grasping a not-so-standard gear with an oblique hook. Moreover, the constant reciprocation of the 'seesaw', the source of energy, is still the helical hook gear.

In addition to this, under the seesaw, there is also a small lob, which is constantly moving back and forth with the operation of the escapement.

Sure enough, I was right.

It does make use of the principle of 'isochronism'.

Thinking so, Zhu Yuan pointed to the pendulum in the escapement and asked Jin Dahu: "This, do you know what the principle is?" ”

"Don't hide it from your lord...... Jin Dahu said: "Xia Guan Xiao felt that adding this was a counterweight, which could make this escapement more stable, and later ...... When I became an adult and started to run this business, my father said that with me, this white ball is done, and the time for it to come and go is fixed. ”

Zhu Yuan said: "That's true, your father is a smart man. ”

Jin Dahu smiled: "Don't dare to be an adult to compliment, father...... I'm afraid I also listened to what my grandfather said, what the truth is, the lower officials don't know, and my father doesn't know either. ”

Zhu Yuan: "......"

Well, skip it.

"I don't know the reason, I just remember a 'isochronous'," Zhu Yuan said, writing three words on a piece of manuscript paper in front of him with a charcoal pen, and then said: "Probably, this pendulum has a certain arm length and weight...... I don't know if it has anything to do with weight, in short, under certain external conditions, no matter how large the amplitude of its swing is, back and forth, the swing time is constant, as long as the time can be accurately measured, and associated with the time of the day, you can make a fairly accurate clock...... Well, I was still pondering just now, this name is not imaged in the end, and people misunderstand it, thinking that it is a traditional drip. Henceforth...... This one...... It's called engraving watches, the name of the workshop, and change it, the engraving workshop. ”

In the end, I still don't want to use 'clocks' and the like, and I'm worried about affecting sales.

Jin Dahu, as well as a few people around, clearly heard the word 'clock' that Zhu Yuan casually said, and in a blink of an eye, it became 'engraved watch', and they didn't quite understand why.

However, of course, what the adults say, is what it is!

And so it was settled.

Zhu Yuan didn't finish, gestured to the escapement system in front of him, as well as the drawings, found another page of blank paper, wrote a few paragraphs quickly with charcoal, and ordered: "These will be transferred to Jinling University later...... Well, the National University also sent a copy to their physics department, and said that I instructed them to study the principle of 'isochronism' of the pendulum and confirm which factors are related to isochronism, which seems to be very small, but in fact it is also a great truth, which is related to the foundation of all things in heaven and earth. ”

At this time, Jin Dahu was a little reluctant.

Just now Zhu Yuan asked, Jin Dahu calmly said the biggest secret of this escapement system, but he understood that the great talent in front of him might have known, and he also wanted to show himself in front of Zhu Yuan.

However, this is not something that anyone can know.

Zhu Yuan also noticed Jin Dahu's hesitation, and said with a smile: "In the past, there were some big truths and some small secrets, you can be a family heirloom, quietly guard, and ...... in the future It's different, you should also read the book "The Science of Economics", and I have also customized various studies that I know for several universities, this 'isochronism' principle, I just didn't remember it before, but I know that I won't hide it in my heart, even if you don't say it today, when I think about it, I will transfer it to the students at the university for study. ”

After listening to Zhu Yuan's words, Jin Dahu reacted and quickly said: "My lord, it is the lower official who cherishes the broom, and the lower official will let people send it." ”

Zhu Yuan was very satisfied with Jin Dahu's reaction, and continued: "The times will be different in the future, these truths, children who are less than ten years old may know these truths in the future, and you don't have to worry at all, I just saw it, whether it is carving or polishing, these skills need to be exercised." However, you also need to be motivated, because in the process of moving from the agricultural age to the industrial age, the status of craftsmen will be greatly improved, and the requirements for your knowledge will also be raised. Jinling University of Technology, which is being planned, is for you. If you feel that you are too old to learn, then you should pay attention to your children's education. In the future, the treatment of craftsmen at the lowest level of ordinary craftsmanship will definitely be different from that of the most advanced craftsmen who know many fundamental principles. ”

At this time, not only Jin Dahu responded, but the people around him also echoed it.

Wei on the other side also wanted to speak and stopped.

Because of the 'Jinling University of Technology' in Zhu Yuan's words, it's just that, as a craftsman, some deep-rooted inferiority complex made Wei not ask in front of Zhu Yuan.

That university, they are artisans, can they really go to study?

However, think about it again, what does it mean to deceive such a big person in front of him?

It's definitely true.

In any case, the University of Technology, it doesn't sound serious, how can the word 'work' be associated with the 'university', since it is connected, then ...... I'm afraid it's really connected.

Zhu Yuan didn't notice Wei Ye's expression, and after a few words, he returned to the topic of 'engraved watches' that had just been named in front of him: "Give me an approximate time, how long will it take for you to make the first batch of engraved watches, and how accurate is it?" ”

"At present, there are a total of ten rebuilds," Jin Dahu said: "My lord, if it is just assembly, Xia Guan can give one now, but ...... In this way, the engraved watch is not accurate, after the installation, it also needs to be carefully debugged, calculated, before the end of the month, the lower function can ensure that all ten engraved watches are completed, and the accuracy is ...... The daily difference will never exceed a quarter of an hour. ”

A quarter of an hour, that's 15 minutes.

If you tell someone in a few hundred years that a watch is no more than 15 minutes off, they will think it's outrageous.

Right now......

This is absolutely rare precision.

Zhu Yuan nodded, not dissatisfied, but said, "Can it be more accurate?" ”

"Yes," Kim Dahu was decisive: "I'm just afraid...... It takes more and takes longer, just like ...... Adults should have seen the crystal ...... Engraved watches, the daily difference will not exceed one interest between. ”

Zhu Yuan subconsciously took a breath.

Well.

Someone is short of popularity.

It's about four or five seconds.

If that's the case, it's already a rare precision!

So he gestured in front of him: "Tell me casually, if you want to be more precise, what is the approximate situation?" ”

Jin Da Detective pointed to several of the shafts: "My lord, here...... This bearing is made of crystal...... Crystals are also good things, only this ...... With gemstones, or better. ”

Zhu Yuan recalled a little, this was right.

It seems to be ...... Wear.

However, Zhu Yuan thought: "Can you make some smaller ball bearings, you should have seen it, right?" ”

If it is a watch pocket watch or the like, it is unimaginable to add ball bearings.

Now......

It is expected that the finished product will be the size of a main chassis, although I have not heard of it before, maybe you can also try ball bearings. Just one thing, ball bearings are definitely more wear-resistant than gem bearings, and the friction resistance will be smaller, perhaps, cheaper.

"I've seen it," Jin Dahu said: "Xia Guan also pondered it, and thought it might be better, but I haven't used it before." ”

"Try it, you must have the spirit of exploration," Zhu Yuan said with a smile: "In addition, other gems and the like, as long as you need them, you want to apply for them from the Ministry of Industry, and if Shan Anren doesn't give them, come to me." ”

Jin Dahu nodded: "Xia Guan remembers." ”

After saying this, Zhu Yuan didn't continue to sit, got up and turned to the others, and looked at the various books, drawings, and engraved watch parts around him, including the one that he was most interested in.

Thin sheets of steel, about an inch long and half an inch wide, are cleverly mounted in a box to power the entire chronograph, which only needs to be wound once in three days.

Among them, the thin steel sheet was built by Wei Ye himself.

Zhu Yuan doesn't need to know much to know that spring steel must also be different.

Spring steel that can make bows, spring steel that can make sofas, and now, spring steel that can make clocksprings, will certainly not be the same.

Obviously, the spring steel from which the clockwork is made, the highest end.

Leaving this side of the house, Zhu Yuan looked at the assembly and processing site of the main house in the inner courtyard again, and was very satisfied, but when he was about to leave, he sat down next to the main house console again, and asked for a pen and paper: "Regarding the pointers and scales of the engraved watch, now there is only one pointer, and the scale subdivision is not enough, after this batch is completed, I hope you will try to make a carved watch with two or even three hands, dividing the day into 24 'hours', 1 'hour' into 60 'minutes', and 1 'minute' into 60 'seconds', how about it, what's the problem?" ”

"There are too many pointers, I'm afraid it will affect the accuracy," Jin Dahu said truthfully, "But the lower officials will do their best." ”

"Then, there is another one," Zhu Yuan said, "the current engraved watch is too big, I hope you will try it, make a small engraved watch that is small enough to be held in one hand and can be carried in your arms, we will call it a 'pocket watch'." ”

Kim Sango found the key accurately: "My lord, this is ...... Pocket watches, clockwork is easy to solve, the question is, escapement? ”

Today's engraving takes advantage of the 'isochronistic' effect of the pendulum. If you want to make that pocket watch, the current escapement, I'm afraid it can't be used anymore.

"This requires you to design a new escapement," Zhu Yuan said, "I can give a suggestion to this, but in fact, it is not a suggestion...... Because I only thought of a term called 'hairspring escapement', I pondered for myself, probably using spring steel to make some kind of filament that can be rebounded repeatedly, no more, no more. ”

The hairspring escapement is also thought of when pondering the relevance of engraving.

However, there is only so much that can be thought of.

After Zhu Yuan finished speaking, he saw Jin Dahu's thoughtful expression, and said with a smile: "You think slowly, I'll go to the spring workshop next door to have a look." ”

PS: 9000 words, I owe more to make up, and the last few days of the month will be more 6000, I will sort out the outline by the way, and break out as much as possible next month

(End of chapter)