The story of Lu Ban inventing the saw.
At the beginning, Lu Ban led his disciples to chop wood on the mountain with axes. However, in the face of tall and thick trees, it is very laborious to cut them with an axe in your hand. After a few days, they were all tired, but the cut trees were far from meeting the needs of the palace building.
Lu Ban's heart began to be anxious. One day, Lu Ban went to a steep mountain to look for wood that could be used as a pillar. When climbing a small steep slope, a stone suddenly shook under his feet, and he quickly reached out and grabbed a clump of thatch by the roadside. "Oh, dear!" His hand was cut by thatch and blood was oozing out.
Why is such a humble thatch so sharp? Looking at the small hole in the palm of his hand, Lu Ban was lost in thought. So he forgot the pain of the wound, pulled up a thatch and studied it carefully. As a result, he found that there were many sharp little teeth on the edge of the grass. He scratched the back of the hand with these secret little teeth and actually cut another hole.
Just as he was thinking about the truth, he suddenly saw several big locusts in the grass. Their big dies opened and closed, and they quickly swallowed and chewed the grass leaves. He caught the locust, and when he looked carefully, it turned out that there were many small serrations on the locust's teeth.
He said thoughtfully to himself, "Oh, so they use these serrated teeth to bite off grass leaves. No wonder they eat so fast! " Thinking of this, his mind flashed: If I also use a tool with many small serrations to describe trees, wouldn't I be able to see wood soon? That must be much easier than chopping with an axe.
So he asked the blacksmith to make dozens of iron pieces with sharp serrated edges and take them to the mountains for experiments. He and his apprentice each pulled one end and sawed back and forth in the tree. Sure enough, the tree was soon sawed off.
Lu Ban named this newly invented tool "saw". Later, he installed a handle in the shape of "* * *" on the saw, which was much more convenient to use. With the evidence, chopping wood will be much faster and the magnificent palace will be completed as scheduled.
For more than 2400 years, people have concentrated on him the collective creations and inventions of ancient working people. Therefore, the story about his inventions is actually the story of the inventions of the working people in ancient China. Luban's name has actually become a symbol of the wisdom of the ancient working people.
Extended data:
Other inventions
1, ruler
The earliest name of the music ruler was Moment, also called Lu Banchi. Legend has it that it was invented by Lu Ban.
"Mozi Tian Shang Zhi" said: "Wheelwrights stick to their own rules to make Fiona Fang famous in the world." Rules, namely compasses and straightedge. A ruler consists of a ruler handle and a ruler wing, which are perpendicular to each other at right angles. The handle of the ruler is one foot shorter, mainly for measuring. The length of the ruler wing is uncertain, and the longest is twice that of the ruler handle, which is mainly used for measuring right angles and balance lines. Woodworkers use rulers to measure right angles, planes, lengths and even balance lines.
2. Mo Dou
Mo Dou is a tool used by carpenters to smash things, which was invented by Lu Ban. The tool uses a bucket to store ink. One end of the rope is dyed through the ink hole. At the end of the dyeing rope is a small wooden hook called "Ban Mu", which was invented by Lu Ban's mother. Class mothers are usually about a foot above the ground.
After fixation, the dyed rope bounces back to the ground and is used as a horizontal straight line standard at the construction site. In addition, the class mother can be fixed on a high place, suspended by Mo Dou, and the dyed steel wire rope can be pressed to the wall by using the weight of Mo Dou, which is a straight line standard. The master stonemason fixed the shape of the stones collected by the bucket line, and then knocked off the unnecessary parts with other tools to form stones such as plates and feldspar with the required shape.
3. Ancient weapons
Hooks and ladders are commonly used weapons in the late Spring and Autumn Period. Mo Wen records that Lu Ban changed the hook into a "strong hook" for ship warfare. Chu used this device to fight a water war with the Vietnamese army. Hook the boat when it retreats, and push it away when it passes. "Mozi's public loss" records that he changed the ladder into a ladder that can stand in the air to attack the city.
Step 4: ladder
Ladder is an ancient siege equipment, which is said to have been invented by Lu Ban. The following is the relevant record: Mozi Gong Bo records: "Gong Bo is the weapon of Chu to build a ladder, and will attack the Song Dynasty after its completion." "The Warring States Policy and the Public Transport Plate Set a Machine Seal for Chu" wrote that Mozi said, "Seeing the public is a ladder." "Huai Nan Zi" said: Lu Ban is defeated by the public, and the Chu people are also defeated. He is a wise man of the son of heaven and can be a ladder.
Xu Shen's "Brief Training of Huainan Zibing" notes: "The ladder can stand on the cloud, so you can have a bird's eye view of the enemy city".
5. Strong hook
"Hook strength" is also called "hook rejection" and "hook giant". It is a war tool used in ancient water warfare, which can hook or hinder enemy warships. Legend has it that it was invented by Lu Ban. The following are all kinds of relevant records. Mozi Luwen: "In the past, Chu people and Yue people fought in a boat on the river. Chu people advance downstream, retreat against the current, advance at the sight of advantages, and retreat at the sight of disadvantages.
The Vietnamese advance against the current, retreat downstream, advance at the sight of advantages, and retreat at the sight of disadvantages, so the Vietnamese will be defeated by the Chu people. From southern Shandong to Chu, the loser started as a boat fighting device. As a preparation for a strong hook, those who retreat hook it, those who enter it are strong, and the length of the hook is measured. When making soldiers, the soldiers of Chu were not loyal, so if the Chu people were defeated, they would be defeated. "
6. Stone crusher
According to Shiben, Luban also invented the stone mill. It is said that Lu Ban used two hard round gems, each of which was cut into dense shallow grooves. They are rotated by people or animals and ground into powder. This is what we call polishing. Before that, people put food into a stone shovel for processing, and the invention of grinding turned the up-and-down movement of scorpions into a rotating movement.
Changing intermittent work into continuous work greatly reduces labor intensity and improves production efficiency, which is a great progress of ancient grain processing tools.
Baidu Encyclopedia-Luban