For such a large kiln, the bellows was too small. Considering the actual situation in the tribe, Song Xuan felt that it was still a bit unrealistic to make the bellows he wanted.
Although the structure of the bellows is not complicated, it is very complicated for Teng She.
However, Song Xuan suddenly thought that although it was difficult to make a suitable bellows, he could try to make a skeleton and then support it with animal skins inside.
It is indeed difficult to seal the surroundings tightly with wooden boards, but if you just need a frame, it is not that difficult.
There are also many complete animal skins in the tribe, most of which are from goats. When catching such prey that does not have high combat power, the hunting team will be more careful. Even if they cannot capture them alive, they will use weapons to target innocuous places such as the head and buttocks. .
Even when peeling, keep it as intact as possible. Although it doesn't have much use, it is still good to bring it back and fill it with some soft hay to make a toy.
Even some of the targets in the tribe today are made in this way. The targets made in this way are much more vivid and vivid than the heads of erected wooden stakes, and the height and size are more in line with the real hunting environment.
After a careful design with Shi Ban, the two chose a relatively larger sheepskin. Of course, if it is used to blow air, the bigger the better, but after all, this is the first time to do it. If it is damaged, There are some larger animal skins to use later, so even if the design is unsuccessful, the loss can be stopped in time.
Although the animal skin is irregular, Song Xuan still wants to use wooden sticks to prop it up into a square shape. The wooden board that pushes the wind in will be relatively easier to make. If it is made according to its shape, If it's round, the board won't be that easy to polish if you want it to fit perfectly.
The wood is also readily available. Although there is not much in stock, it is more than enough to build a rectangular wooden frame half a meter long and thirty or forty centimeters wide.
However, the existing wood needs to be polished again to make it as horizontal and vertical as possible, and there must be no big undulations on each side.
There are no other tools here, so you can only grind them hard on stones. Fortunately, they are all semi-finished products, so it only took half a day to grind them to the desired effect.
Before assembling, you have to carefully fix the sheepskin and the four legs, but you can't completely remove them because there is no way to seal them after they are removed, so you can only use ropes to tie the legs as tight as possible. No air leakage.
At the same time, he also made full use of the two large holes at the front and rear. Song Xuan planned to connect a pipe at the neck to go straight into the combustion stove, and the large hole at the tail was directly used as a place to push the air rod in. This can be regarded as utilizing this complete piece of animal skin. To the extreme, almost everywhere there is no waste.
The size of the frame is completely based on the animal skin. If it is too big, the animal skin cannot fit on it. If it is smaller, the animal skin cannot hold it up. In this way, there will be many gaps when it comes, and it will be completely useless.
Therefore, there was no room for error. Although there was no ruler in the tribe, Song Xuan still took some animal skin ropes and marked the parts of the same length, trying not to make too big an error.
However, the existing wood has an extra section. If it is long, it can be slowly polished after it is finished, but if it is short, there is no way to make up for it.
Such a frame definitely cannot be tied directly with ropes as usual. It still has to use a relatively strong rope rivet structure. However, the method is relatively primitive. You can only use charcoal to burn a hole bit by bit, and then carefully pick up the things and slightly Grind it larger, then polish the corresponding wood part, and finally put it in.
It was very cumbersome to talk about, let alone do it. The two of them were careful and careful, and they didn't even dare to take a breath when they were burning.
Fortunately, Shi Ban also has some experience in this kind of simple mortise and tenon joint. After all, he has made some related things before. After burning a nearly round hole, he stopped in time, and then used the bones to shovel away the blackened charcoal. , polish it as roundly as possible, so that the corresponding wood will be easier to make.
Looking at the wooden frame that took two days to make in front of him, Song Xuan shook it a few times. It was still very solid. At least it was not loose at all. This was also related to the fact that the two of them were extremely conservative, and the hole was slightly smaller. A little, the wood is not polished very finely, it can only be squeezed in bit by bit, and naturally it is very strong.
Moreover, in order to ensure that Song Xuan was strong enough, one end of each piece of wood was burned into a hole and the other end was used as a piece.
As for the protruding parts on both sides, they can only be burned off and then polished flat. After polishing off one end and making sure that the animal skin can be propped up, Song Xuan continued to work on the other end. Although it was done by measurement, it was safer to test it. Well.
After it was completely done, the two of them put the sheepskin in. Because it fit very well, it was not easy to put on the sheepskin. Song Xuan was afraid that the sheepskin would be worn out, so he specially got some oil and smeared it inside the sheepskin.
Next is the most difficult part to make, and the key part of this simple box sealing, which is the design of the air push plate and the air inlet.
This board must not be too thick. Song Yaxuan gave it to Shi Ban. The limit is one finger thick. If it is any thicker, it will probably be difficult to use. If it is too heavy, it will be tiring to push.
And it has to be a complete wooden board. Song Xuan can't do it. He can put the wooden boards together without falling apart.
As for the other parts, Song Xuan can only design them slowly by himself. The four corners of the wooden board can be dug out to fit the frame inside. This was also designed before, so although it will not fit perfectly, it will still work. Air leakage is reduced as much as possible.
The air outlet is also the simplest. Song Quan's temporary idea is to put a bamboo tube around the sheep's neck. After all, bamboos of the same size are easier to find, and bamboos gradually become thinner. These are in line with the principle of air supply, and gradually become narrower. You can increase the wind speed so that the wind can naturally blow into the entire kitchen hall.
Song Xuan couldn't think of a better way to make the air inlet for a while. After all, it was all animal skins, and he couldn't easily dig holes for experiments. He could only think about it in his head before doing it.
Although Song Xuan knew the relevant principles, he had not fully stood inside to see what the structure was like. He could only rely on his own imagination. Although Song Xuan had theories that were thousands of years beyond this world, most of them were He is only in the theoretical stage, and he is not very good at practical operations. After all, he is only an ordinary person. It is impossible for him to understand these things that have been basically eliminated in later generations, and still have a thorough understanding.
In particular, these things used by Teng She are some of the most primitive objects. Song Xuan can think of such things, which is already quite good.
After thinking about it carefully, I decided to make a hole in the hide to use as an air inlet, but this hole still had to be designed carefully.
Song Jun's idea was to dig a square hole with enough air intake on the side near the outside. Of course, this hole only had three sides, and it still had to be connected to the entire large animal hide.
Then tie a piece of wood under the dug-out animal hide. The wood doesn't need to be too big, just as thick as one finger, but it must be strong enough and extend to the front end of the entire bellows.
In this way, on the same line, dig out a depression in the air push plate that matches the size of the wood. When pushing the board inward, directly stick the wood to the top of the air box to seal the air inlet. When it is pulled to the rear end, it is affected by gravity, the wood hangs down, and the air inlet naturally opens.
Although it is not the most perfect solution, it is a better way that Song Xuan can come up with for the time being. In this way, the air inlet can be closed when the air is supplied, and at the same time, it can be naturally closed due to its own gravity. Into the wind.
In order to ensure that the cut animal skin can still seal the gap, the stone-burning method developed by Song Xuan cannot be used. It can only be cut slowly with a stone knife bit by bit.
In order to tie the animal skin to the wooden stick, Song Xuan cut a piece of hemp from the ground and woven it into a thin hemp rope.
It took two people two days to build the frame, but these two days were not enough for Shi Ban to grind out a wooden board of suitable size. In the end, it took four days to make the wooden board that barely conformed to Song Dynasty. Although there are many obvious traces of polishing on Xuan's request, as of now, this is the limit that the tribe can achieve.
The next step is to install two poles for blowing the wind on the wooden board. This is a relatively easy step that has been missing for a long time. It still uses a mortise and tenon structure, but there are not so many requirements for the wood. You can just use the logs around the tribe. On the contrary, round wood is easier to use.
In order to ensure that it is strong enough, Song Xuan reinforced the pole on both sides of the wooden board. Even if one end of the wood breaks, it should not affect its use.
There is also a small handle on the outermost part of the two poles that is assembled. At least in this part, Song Xuan feels that there is not much difference between the ones he has seen before. It is just that the square wooden stick is replaced by a round one. That’s all.
This is also the part that Song Xuan is most satisfied with. Of course, the other parts are the best that he can do for the time being. That's all he is not satisfied with. At least Song Xuan tried his best and it seems to be okay. As for what will happen, we can only wait and see. Let’s see how it looks after assembly.
First put the wooden board in diagonally, adjust the position, and then install the pole for pushing the air. Fortunately, both ends are empty, so it is not troublesome to install. The carefully designed wooden board is basically the same as the inside. After it fit, Song Xuan pushed it back and forth a few times, but only felt a slight friction. Later, he applied oil and rubbed it back and forth a few more times, and it naturally became smooth.
Feeling the wind blowing from the sheep's neck, Song Xuan also felt a sense of accomplishment:
"Ban, come and try too!"
"hey-hey!"
Ban, who was blowing the wind, showed a burst of silly smiles. It was true that he had been busy with work these days. He basically didn't take much rest. After eating, he started grinding wood. Since Song Xuan valued the bellows very much, Shi Ban naturally also I didn't dare to borrow the help of others, so I did it all by myself. At most, I let the bow and arrow makers on the side take the beating.
Although the designed air inlet is not perfect, there is no big problem in using it. Holding the air box, Song Xuan said to Shi Ban:
"Let's go, take the bamboo and give it to Stone and the others to try!"
Seeing Song Xuan carrying something like a sheep, Shitou immediately recognized what it was and shouted to Song Xuan happily:
"Angel, have you...made it?"
"Well, let's try it first!"
Song Xuan said and assembled it with Shi Ban, put the bamboo tube around the sheep's neck and tied it tightly with animal skin rope.
Song Xuan stopped taking action and cooed at Shi Shi, signaling for him to try it too.
Shitou has not been running to the workshop less in the past two days. He has a very clear grasp of the progress. He is also very clear about the use of the bellows.
Seeing that Song Xuan asked him to use it himself, he and Shi Ban carried the bellows to the door of the stove and extended the pipe into the combustion chamber. Fortunately, it was still some distance away from the charcoal and it would not burn out at once. Song Xuan was worried about what would happen next. The design is also well thought out, which is to use the stone to burn a batch of clay pipes, so that there is no need to worry about the pipes being burned out after being used for a long time.
I saw the stone pushing the pole inside, and as the air flow poured in, the charcoal fire in the combustion chamber immediately became stronger. After pulling it back and forth a few times, the flame in the combustion chamber became much larger, and as long as enough air was sent in, , it can be maintained for a while even if it stops slightly.
Of course, this time is relatively short, and you still have to continuously supply air, but this is much less laborious than holding a fan. Pushing and pulling back and forth does not consume a lot of energy.
"God's envoy, God's envoy!"
"It's really okay!"
The stone who used the bellows seemed very excited. Even if the three of them took turns recently, they didn't have time to stop, because in addition to fanning the inside, they had to make pottery.
The successful production of beehives can be regarded as solving the last shortcoming of firing pottery. Although the existing beehives are not perfect, they are still satisfactory. It will not be a problem to hold them for a period of time. The entire inner layer of Songxuan is coated with grease. , so the loss will not be particularly large.
After this one is worn out, Teng She will probably use a new tool. Even if it is not used, it will not be troublesome to make a few more by then. Moreover, some bad things can be modified by then, and they have been mastered. If you master technology, you will only get better and better in the future.
