Jingwen heard that this silver coin was afraid that there would be all kinds of problems, and he immediately had a headache. Now not only the cost of coinage, but also the quality of what currency is not up to standard, and other factors will cause the silver coins proposed by Jingwen to not achieve the desired results. And if the silver coin plan can't be opened, then I'm afraid that Jingwen's purpose of trying to mint currency to control the economy of the Tang Dynasty will not be feasible. Therefore, Jingwen is thinking about how to make this currency well, and be able to save the cost of minting, so that he can live the so-called seigniorage. Seigniorage is a very huge benefit, and the ordinary government can't see it at all, and now that they have the opportunity to issue coins, they will naturally have to hurry up and make a big profit, so as to be worthy of their own coinage rights!

"If only there was something that could press the coins out! However, how can the strength of one person be able to press the silver coin well? Cui Ying said.

And Cui Ying's words immediately made Jing Wen have a flash of inspiration. That is, you can use the stamping method to mint coins, and you don't need to melt the silver water and then mint the coins! If the stamping method is used, it is only necessary to make the silver into a small ball, then place it in the middle of the mold, and then press the mold hard. Once pressed, the silver coins can be taken out. This can be said to be a low-cost and efficient solution. Moreover, the appearance of the minted coin is delicate and clear, because it is pressed and molded at one time, not the kind of artificial pouring of silver water and then minting again. This method is very difficult to control the weight of the silver coin, resulting in excessive errors. But stamping doesn't matter, stamping only needs to be cast into a small ball of the same weight at one time, so that it can be pressed and formed at one time. This is not only convenient, but also cost-effective.

"That's right! That's how we use it! Jingwen said.

But Cui Ying said: "But one of us, even Hercules, can't suppress everyone the same!" ”

Cui Ying didn't know what pressure was, because even if it was a person, he couldn't suppress all kinds of silver coins with great strength! And. There is a limit to manpower, and it is naturally impossible to press silver coins with force for a long time.

Jing Wen smiled and said nothing, he obviously already had a way, because manpower is not good, he can use mechanical ones! Mechanical ones are able to produce silver coins of a uniform style.

After a few days, Jingwen came to the bank's mint, and then looked at a huge iron pillar hanging in midair, and then there was a box underneath, which was empty and engraved with various patterns. Then. A man who looked strong opened the box and put in a few small silver balls. Then he immediately left, and went to pull a thick rope.

"Gera-" The iron pillar was pulled up.

Of course, this iron pillar is so thick that even the average strong man cannot pull it. However, this iron pillar is made of pulleys, so this allows him to pull it up. And when this pulley set was pulled to a certain height, the strong man suddenly let go.

"Boom-" With a loud bang, the pillar of iron fell against the Earth's gravity and landed on top of the alloy box made of mixed metal.

And the alloy box was pressed down hard. Then the small silver ball inside was crushed and deformed, and finally became a round flaky thing.

Jingwen asked the strong man to pull up the iron pillar again, and then went to take down the box. Jingwen took out a disc from the box and looked at it.

"It worked. The stamping machine minted the coins successfully! Jingwen said excitedly.

A few days ago, Jingwen began to draw the design drawings of the stamping machine he designed, and in the past few days, he has asked senior craftsmen to make various parts of the stamping machine, and then tied the various machines with ropes, so that a primitive human stamping machine has been formed.

Jingwen knows. I have completed an invention again, that is, a stamping machine. Of course, this press is a very primitive human press. It's not something advanced. If it is in the future life, I am afraid that it will not be very practical at all. In the final analysis, this is still the use of manpower, and then pull the iron pillar to a high place, and then use the weight of the iron pillar itself to smash down and become a stamping result. This is the most basic reason for the stamping machine, but it is more and more advanced and the accuracy is getting higher and higher, but the principle has not changed at all. This kind of stamping machine is only able to make things that do not need to be very accurate.

Jingwen successfully used this stamping machine to complete the minting of this silver coin, using the weight of steel to stamping the silver coin mold, and as a result, the silver was directly pressed into silver coins, and now this silver coin can be stamped out in this way. On the other hand, the cost of stamped silver coins is much lower than that of silver coins made from molds made by melting, and it also saves costs. Moreover, because the press is cold, it is not as hot as melting silver, so the service life of this die is higher, and the service life is longer than that of those hot silver water.

"Jingwen, can this press also be used to make copper coins in the future? Even a lot of things can be used to make zuò. Cui Ying asked.

"Of course, this press can be used to make not only silver coins, but also copper coins. Moreover, many weapons can be forged with this press in the future, especially those blunt weapons. Also, if you already have gold foil, it will be much easier, and you don't need so many people to smash it with a hammer, as long as this press is smashed down, a large pile of gold foil can be made. Therefore, this stamping machine is a huge invention, this is the world's first machine tool, and the meaning of history is different! Jingwen said.

Jingwen was very happy in his heart, because the world's first machine tool was born. Although this machine tool is the lowest technical pressure machine tool, that is, a stamping machine, this historical significance is different! The first person to do anything, that is enough to be remembered in the history books, and the book is very large. Although this press still uses manpower, it represents a new era in the processing of various parts. In the future, from industry to military, China will become more and more powerful.

And history has become more and more unpredictable because of Jingwen's butterfly. In the future, Datang's military equipment will reach a new level, and the next expansion will be carried out more smoothly. At that time, China will achieve the great cause of conquering the world ahead of schedule. (To be continued......)