Chapter 39 Wooden Bow Drill
After the collection in previous years, women will start making winter clothes for all tribe members.
They will take out all the skins, put them in the sun, and then simply cut them with a stone knife to form the desired shape.
The so-called clothes are just wrapped around the body with large pieces of animal skin, and when sleeping, they also use animal skin and hay as quilts.
But this year has become completely different.
Since Xu Chen invented the spinning and weaving cloth, women have almost never left their homes to collect it. Everyone is busy spinning and weaving cloth from morning to night, except for arranging the tribe's people to eat, drink, defecate and urinate. They are busy until late at night every day, and some even slept later than Xu Chen.
And in their busy schedules of work, there are more and more linens.
With cloth, several skillful women began to make clothes for their tribe members.
Men have big shorts and T-shirts, while women have medium long skirts and short sleeves.
Although they were all a group of crappy tailors, and they couldn't bear to look at them in a slight and breathable way on their bodies, and it was easy to put on and take off. Therefore, all the primitive people wearing new clothes suddenly screamed excitedly, like a group of monkey-crowned monkeys dancing in front of the cave.
In order to cooperate with the women to sew clothes, Xu Chen had to spend several more days making bone needles with two men.
It is easy to polish bone needles, but it is extremely difficult to drill needles.
After drilling several bone needles in succession, Xu Chen made a cruel decision to invent an unprecedented complex tool - Wooden Bow Diamond.
Wooden bow drill is the most commonly used tool by rural carpenters. The principle is very simple. It is to use the balance wheel to drive the wooden pole to rotate back and forth, and let the bow string-like rope wrap around the wooden pole to form enough torque. When all the kinetic energy of the balance wheel is transferred to the rope, press the bow arm downward, and the rope drives the balance wheel to rotate in the opposite direction. In this way, the drill bit can continue to work.
Of course, the principle is indeed simple, but now that there is no tool except for the stone knife and stone axe, it took Xu Chen two days to complete this wooden bow drill.
It took a day to make bow arms.
Because there must be a hole through the drill rod in the middle of the bow arm.
But it was so difficult to penetrate a hole in the middle of the wood at the moment. So he came to his senses after working for a long time. He cut the two sticks into a depression, polished them with a stone, roughly round and smooth, put them together, and tied them together with hemp rope, and then made a bow arm with holes in the middle.
With a bow arm, it is much easier. The method of making a drill rod is similar to an arrow. You only need to find a suitable sharp beast tooth to clamp it on the drill rod head and tie it tightly with a hemp rope. As for the balance wheel that drives the bow arm to swing, you can directly choose a suitable stone and tie it to the drill rod with a hemp rope.
Looking at the unprecedented and complex tool that Xu Chen took two days to invent.
Two men who followed the tools to help polish bone needles were astonishing as ever.
Especially when Xu Chen demonstrated drilling, the two were almost completely shocked.
Although this wooden bow and drill structure is a batch of rough and rough, it is typical of the original era tools.
But after it really rotated, it was no different from the wooden bow drill in later generations. As the bow arm pressed down, the balance wheel and hemp rope continued to rotate back and forth, and the sharp teeth quickly drilled a small hole in the bone piece of the test.
It can be used, but what Xu Chen regrets is that the drill bit is a tooth. Because it has no blade, it depends entirely on the sharp tip of the teeth to grind, resulting in too much impact and cracking of the bones.
Teeth are the hardest organs in all animals. The enamel is not only harder than bones, but even harder than ordinary steel.
Men often boast about being as hard as steel, but in fact they are too conservative, and their teeth are the hardest.
But it is useless, so it must be easy to use.
Just like the wooden bow diamond invented now, it has a strong and unsatisfactory effect, just like a man bragging, it looks good but not easy to use.
Xu Chen's wood drill is constantly rushing,
After several bone fragments were scrapped one after another, I finally got a bone fragment of the appropriate size of the hole and handed it over to the man for careful polishing.
The invention of any reasonable tool will improve work efficiency.
The same is true for the wooden bow diamond. Although the effect seems bad to Xu Chen, it seems to be like a magical weapon to the eyes of the two primitive people.
In just one meal, Xu Chen drilled three bone pieces in one breath. Of course, more were lost. Finally, the appropriate bone pieces he selected were smashed, and at least 70% or 80% of them were drilled.
However, although the teeth are hard, they are still scrapped quickly under such high-strength wear.
So Xu Chen had to continue looking for sharp beast teeth as drill bits.
Suitable beast teeth are not easy to find, because only beasts like wolves have sharp dog teeth. In the past, the tribes rarely hunted adult wild wolves, but in fact there were very few wolf teeth, and most of them were used by a group of men as combat power decorations.
Therefore, Xu Chen had to settle for the second best and asked the man who made the stone axe to help create a few stone drills.
But the stone is obviously not as strong as the wolf's teeth, and it is scrapped faster when drilling bone pieces.
So he had to consider replacing the needle material.
The reason for using bones is that they are hard and not easy to break. If you don’t consider using it for a long time, the wood should be fine.
So he found some materials left to make a bow, and used a stone axe to split it into small wood pieces and then drilled the holes. The speed was indeed much faster, and the stone drill bit was also very small. He tried to polish it into a wooden needle, and it was indeed useful.
As a result, he successfully solved the problem of insufficient needles in the tribe.
With enough needles, women sew clothes greatly accelerated, and even in their spare time, they found out many animal skins that had been worn in previous winters and re-cut and sewed them into new styles of clothes.
Xu Chen also advised them in his spare time to sew winter clothes into long-legged trousers and long-sleeved ones.
In addition, some remaining linen and animal skin scraps can be sewn into bellybands, bras and shorts.
However, when he saw a woman sewed a pair of animal skin shorts with animal skin under his inspiration and wore it on a child, he felt his eyes start to shine, and he vaguely saw a group of savage men and women wearing animal hair running freely in the primeval forest under the brilliant sunshine.
...
The primitive days were busy and leisurely.
As the moon dims again and enters the next cycle, the autumn colors become more and more intense.
According to time calculations, it should have entered the eighth month of the lunar calendar, that is, around the tenth month of the lunar calendar.
In the mountains and fields, a large number of broad-leaved trees began to turn yellow. Although the leaves have not yet fallen, the temperature has become cooler day by day.
If you don’t wear clothes sooner or later, it will be irresistible.
Especially when sleeping at night, you need to cover with hay and dirty animal skins.
Fortunately, a group of women worked day and night, and the fabrics were getting more and more, and the tribesmen gradually began to wear linen clothes. Some of them had not yet waited for the fabrics to wear newly renovated animal skin clothes.
Xu Chen took Gu Heju to re-dig the water holes for daily drinking water washing, and made a square well with tiles, lime clay and mud. At the same time, he dug out several mud holes passing by the flowing water below and drained the water. Then he made a few water holes for washing vegetables and washing with tiles.
After such a renovation, the cave's appearance became more neat and beautiful.
The emergence of these pools has greatly improved the water sanitation situation.
Because there were enough pottery tiles burned this time, Xu Chen built a circle of low brick tables around the fire pit as benches, which was convenient for eating and roasting the fire to keep warm.
The plants and thorns in the river beaches and hilly areas below the mountains have begun to enter a yellow state.
The collection of women has completely stopped.
A circle of stone walls has been surrounded by a kiln factory, with a height of about 1.5 meters. It is not too high, but it is enough to stop ordinary beasts.
In the valley, since the group of wild wolves were wiped out, after the continuous hunting and expulsion of Feng and others, except for some wild boars, foxes, pigs, badgers, jackals, etc., there are no large beasts that seriously threaten the safety of the tribe. Therefore, this wall is enough to ensure the safety of the kiln factory workers.
Of course, for safety, the door must be available.
Therefore, after the wall of the kiln factory was repaired, Xu Chen took two men who made tools down the mountain and prepared to repair the gate of the kiln factory.
The gate is facing the river beach, with the purpose of convenient transportation of stones and water.
More than a month has passed since the construction of the kiln factory started. Every day, people have come and go, and a road has been stepped on to the river beach.
In addition, most men have been busy in kiln factories recently, and the thick smoke caused by burning kilns every day has now become completely different from the original desolate scene a month ago. The atmosphere is very lively, not like the scene of a group of primitive people living, but like a mountainous countryside that I once knew.
Especially recently, this is even more true after a group of savages have put on linen clothes.
The kiln factory gate is almost three meters wide.
According to the current conditions, it is difficult to make such a large two doors.
Because the stone sword and stone axe cannot cut down too large trees.
However, it is not necessary to use thick trees throughout the door. The main two rotating door shafts must be strong.
The three of them walked around the forest near the kiln factory for half an hour, and then selected two small trees as thick as thighs.
The task of cutting down trees was naturally handed over to two tool men. Xu Chen took Gu Heju and began to build door posts with ceramic bricks.
The original stone wall was very rough, with a trapezoidal structure wide at the bottom and narrow at the top. If you want to stand up the door, you have to build the door wall into a straight and flat state so that the door can be fixed.
However, the two men had two trees with thighs, and they chewed on the mountain for a whole day before they cut them off, and the stone axe cut several times.
After the tree was knocked down, Xu Chen measured it with a rope and continued to cut it.
The two of them chewed and cut off for half the day, and finally got two trunks two meters long.
A group of people from the kiln factory went up the mountain to help lift two pieces of wood, trim them according to Xu Chen's requirements, and then peel them and dry them.
In the past two days, Xu Chen and Gu Heju also built the door walls with ceramic bricks on both sides of the door, and found two flat stones, and grinded them slightly in the middle and placed them on both sides of the door post as door shaft stones.
Chapter completed!