Chapter 879 Platform Scale and Case Scale
Ao Fei immediately smiled embarrassedly. The functions of these two platform scales were indeed obvious, but of course it was also because of the leader's erudition. At least other people did not guess the purpose of this thing.
"I taught you the principles of the balance and lever. I also taught you the production and principles of the scale bar and the weight."
Luo Chong couldn't help but complain. This really fulfilled the idiom, you are showing off your skills before an expert.
Wen Nong also laughed beside him. He said, "Then the leader, please give us some comments and see if there is anything that needs to be improved on this platform scale?"
"Well, I'll take a look first." Luo Chong nodded and observed it carefully.
These two platform scales are actually no different from the platform scales that Luo Chong had seen in his previous life. After all, the principles used are the same, both using the principle of lever.
There is a heavy-duty iron plate under the big one, which is used to place the object being weighed. There is a column in front of it, and there is a cantilever on the side of the column. There is a platform on the bracket of the cantilever, which is used to place weights, that is, weights. Under the bracket is an iron ruler with scales, and a tray is hung on one end of the iron teeth to add weights.
In fact, the principle of this thing is an enlarged version of a portable scale bar, but the scale pan has been turned into an enlarged iron pan, and then the iron ruler, that is, the "scale bar" with scales, is pulled by a hook, and the weight with fixed weight on the other side of the scale bar has been turned into a weight that can increase the weight, and then a floating weight is put on the top of the iron ruler "scale bar", which can be moved left and right, and then the specific weight can be seen by looking at the corresponding scale on it.
The way to use this thing is to put the weight to be weighed on the iron plate first, and then add weights to the tray at the end of the iron ruler until the middle scale bar is pressed down, so that the total weight of the weight on the left is roughly the same as the weight on the right after multiplying it by multiples.
For example, if you use a platform scale to weigh a person, who weighs about 150 pounds, and then you add a weight that corresponds to 150 pounds to the tray, at this time the weight of the object being weighed is still slightly greater than the weight corresponding to the weight, and then you move the floating weight on the iron ruler to one end of the weight, so that both sides of the lever are gradually balanced, and after both sides are completely balanced, look at the small scale displayed on the iron ruler, that is, the small scale within ten pounds, and you can use the 150 pounds corresponding to the weight, plus the scale displayed by the floating weight, which adds up to more than 150 pounds.
The large platform scale they designed has a maximum unit of 20 jin on the vernier. In other words, if you are weighing something under 20 jin, you don't need to add a weight to the tray. You can balance both sides by simply moving the vernier weight. If the weight exceeds 20 jin, you need to add weights to the tray to balance the two sides of the scale.
As we all know, the longer the lever, the more you can lift a thousand jin even with just a little pressure. This principle is used by scales. By controlling the weight of the weight, you can balance the object being weighed. This is the working principle of this platform scale.
Luo Chong saw this a lot when he was a child in his previous life. Before the advent of electronic scales, in addition to the scale bar, this type of vernier platform scale was the most popular. Because it is much heavier than the maximum load of the scale bar, this type of platform scale can often be seen in large transactions.
However, after the electronic scales became popular, such scales could only be seen at scrap collection stations. The most common use was to remove the scale plate, clean it, and put it on the stove, and then it became the iron plate used by the pancake aunt at the roadside stall.
Luo Chong looked at it carefully and didn't think it was bad. It was just different from the scales he had seen in his previous life. For example, the tray used to hold the weights of this scale was made of string, and the weights used were all round pancake-shaped weights.
The scales that Luo Chong had seen in his previous life also had round pancake-shaped weights, but they all had a notch. There was an iron rod in the middle of the plate with an iron hook on it, which was hung on the scale rod. When adding weights, just stick the notch of the weight on the iron rod.
In addition, the place on the cantilever where the weight is placed has become a standing flat iron sheet, so that the notch of the weight can be stuck on it, so that it is not easy to shake. There is no need for improvement in other places.
Luo Chong looked at the cast weight scale on the weight again. The largest one was marked with 200 kilograms, then the second one was 100 kilograms, the third one was 50 kilograms, and there were two other weights marked with 20 kilograms. In addition, the maximum scale of the vernier scale was 20 kilograms, which is 10 kilograms.
Then when all these weights are placed on the tray and the weight of the vernier is pulled to the end, the total weight is 400 kilograms, which means that this large platform scale can weigh 800 kilograms!
The importance of this large scale is self-evident. In the past, if the Han tribe wanted to weigh something weighing hundreds of kilograms, they could only drive piles into the ground, then set up a scale rod as thick as an arm and several meters long, and then hang a large weight on it to weigh something weighing hundreds of kilograms.
However, this weighing method is okay for weighing dead objects. Do you want to weigh the weight of a live pig?
Sorry, it's better to kill the pig first, or knock it unconscious, wait until it is motionless, then stuff it into a sack, and then hang it on the hook of the scale bar, so that it can be weighed.
But now, with this mechanical platform scale, you can directly put an iron cage on the scale pan, and then put the live pig in it, let the pig stand on the scale pan to weigh, isn't it much more convenient?
"This scale can only weigh things weighing up to 800 kilograms, and the smallest unit is one tael, which is still a bit small. If we can make a scale with a maximum weight of 1,000 kilograms, it would be even better." Luo Chong said with emotion.
Wen Nong, Ao Fei and others immediately gave a thumbs up, and the two of them said with great admiration, "The chief is really amazing. We didn't say anything or introduce anything, but you can see how to use this scale and its maximum and minimum limits. We admire you very much."
"Stop flattering!" Luo Chong rolled his eyes at them, and then continued to ask, "Can this scale be made bigger? Seriously, if this scale can be popularized, it will be of great use in the future, and it can even be used to weigh coal."
"Yes, Gu Cheng said that the principle of this thing is very simple and not complicated. Before we came, he told us that if the chief needs a larger scale, he only needs to increase the area of the scale plate, extend the length of the scale bar, and add more weights. If he only wants an upper limit of one thousand kilograms, it is not difficult. It's just that when using it, you need a very hard ground. Otherwise, the two thousand kilograms of weight will be applied to the four legs of the scale, and even ordinary blue bricks will be crushed." Wen Nong explained.
Luo Chong nodded, "That's right, don't weigh it at the end, it's okay, just crush the ground first. By the way, is this Gu Cheng you are talking about the one who invented this kind of scale? Is he here?"
"To reply to the leader, that's right. These two scales were invented by Gu Cheng. The maximum upper limit of the large scale is 400 kilograms, and the maximum upper limit of the small scale is 25 kilograms. He calls it a table scale, saying that this weight is suitable for weighing scattered items on the chopping board, and is suitable for daily transactions by the people.
Gu Cheng is an apprentice who joined our Comprehensive Research Institute last year. His father is a carpenter and has participated in the production of windmills, water wheels, and looms. Therefore, he has been influenced by his father and is very interested in these mechanical structures. The clock that the leader mentioned is also his invention.
He should have come here, but this kid has just become an adult not long ago. He has been working in the research institute and has no time to go home. His mother arranged a marriage for him, but the marriage has never been completed. Now it happens to be the New Year's Day holiday, so the two families discussed and decided to get married during the New Year, so he didn't come with him." When Ao Fei heard Luo Chong asking about the identity of the inventor, he immediately introduced it in detail.
"Sure, he has just graduated and joined the institute, and he has achieved such great success in less than a year. This kid is a talent, Gu Cheng, right? I'll remember, let him get married first, and then give him a title and reward after the festival." Luo Chong immediately praised him.
For inventions with special practical value like this, no reward is excessive. Luo Chong wants people to know that as long as they study hard, they will have the possibility of joining the institute. As long as they can come up with practical inventions, he will definitely not hesitate to give titles and rewards. Only in this way can everyone in the tribe actively participate in scientific research, and then the Han tribe can become stronger and stronger. Rejuvenating the country
through science and education is Luo Chong's basic administrative policy, and it is also the main direction of the future development of the Han Empire.
Luo Chong and the people in the institute discussed these inventions, and the other county governors around could not help but show their surprise again. Wow, everyone in this institute is really talented. The last one invented photography not long ago, and now this one not only invented the clock, but also improved the steelyard invented by Luo Chong, and made a more practical platform scale and table scale. Luo Chong immediately expressed his intention to confer a title and reward.
It is not easy for these officials in politics to make some achievements, and it is even more difficult to be promoted to a title. Compared with these researchers in the institute, they are a level behind.
In the courtyard of Luo Chong's house, the people in the Xingang County Power Research Institute also showed surprised expressions. They were originally separated from the comprehensive research institute. They didn't expect that after they separated and worked alone, the mechanical group of the comprehensive research institute could still create such sophisticated and ingenious machinery with practical value, which really shocked them.
However, although they were surprised, they did not mean to admit defeat, because their power research institute was still an existence that others could not surpass in the field of power machinery.
I'll try to code the fifth chapter and make up for the chapter from the day before yesterday
. By the way, this chapter says there are pictures. If you haven't seen them, refresh them later. They are pictures of platform scales. Some people born after 2000 may not have seen this kind of antique. I used to see them when I was a teenager.
(End of this chapter)
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