Super Chief

　　 If I hadn't seen it with my own eyes, it would be hard for Shixiong to imagine how the North American Indians without iron or steel made various tools from hard rock.

　　 After seeing it, Shi Xiong really admired the patience of these people.

Although the 　　 people have a lot of iron tools in their hands, they still use the old methods when they make stone mills.

　　 This method is very simple, but it is also time-consuming. They just smash the stone with the stone, and then use the abrasive tool made of obsidian to grind the stone, and finally grind out what they want to build. Obsidian is the most common high-hardness tool used by North American Indians.

　　 This makes Shi Xiong very helpless and a little painful. These guys obviously already have iron tools in their hands, but why do they still use this primitive method to make stone tools?

　　 Shi Xiong asked several clansmen, and the answers they gave were almost the same-reluctant...

　　 The hammers, chisels and other tools in their hands are obviously for dealing with stones, but they are reluctant to use them for fear of ruining these tools during use.

　　For these people, the iron tools in their hands are family heirlooms. How could they be used in such a "dangerous" work of making stone tools?

　　 Regarding this, Shi Xiong expressed his extreme incomprehension.

　　 But he has nothing to do.

But fortunately, these guys did not delay the stone bear. Even if they still used that primitive way to make stone grinders, it only took two days. Ten pairs of stone grinders with a diameter of almost two feet were enough. They have been created one after another.

　　 Then these stone mills were moved to several large carts that were just made, and the tamed bison was pulled to the salt mountain.

　　 North American Indians had no means of transportation with wheels before, even if they came into contact with European colonists, vehicles as a means of transportation did not spread among their tribes.

　　 In this regard, Shi Xiong once again expressed the pain of the egg.

　　 Therefore, when casting tools, he deliberately cast more than ten thick bearings.

　　With these bearing bushes, even if the bearing is not available for the time being, you can add boiled butter to the bearing bush, then the wooden axle can rotate freely, and the basic conditions for building a four-wheeled bull cart are solved.

Perhaps the Indians had invented vehicles with wheels a long time ago, but they have not been able to solve the problem of wear between the wooden axles and the frame. In addition, the early Indians were safari people, and they didn’t need a car to pull a lot. That’s why there is no market for this kind of transportation with wheels.

　　 Before the advent of bearings and industrial butter, the wheels of vehicles were fixed to the axles, and the axles rotated with the wheels. As a result, the joint between the axle and the frame will produce huge wear.

　　If it is just the axle wear, it is good to say, after all, it is much easier to replace the axle than to replace the frame. The problem is that the axles and the frame are made of wood, and the friction is mutual. In the process of axle wear, the frame will also wear out.

The North American Indians did not master the method of smelting steel before, so even if they have vehicles, they still can’t solve the problem of friction between wood and wood. In addition, the vehicles are not very useful to the North American Indians, so the vehicles are not very useful. This kind of transportation has not become popular on the North American continent.

　　 Now it’s different. To make steel, you must have a heavy-duty transportation vehicle. Otherwise, with human power, how much coal and iron ore can be transported in a year?

　　 Therefore, when smelting the first furnace of steel, whether it works or not, Shixiong has prepared such things as casting bearings early.

　　 Once the bearing shell is cast, it can be directly mounted on the frame and directly contact with the axle made of wood.

　　 There are many excellent hardwoods in North America in this era. Among them, red oak and walnut produced near the Great Smoky Mountains are excellent hardwoods. Red oak is harder and suitable for axles. Although walnut is not as hard as red oak, it has high-quality toughness and shock resistance, so it is best to use walnut for wheels.

　　 Red oak trees are everywhere at this time, and a large oak tree can make many excellent axles. No matter how hard the axle is, it is not nearly two centimeters thick. Grind away, as long as the bearing bush is not worn out, just replacing the axle will not have much effect.

Moreover, building an ox cart is not much more complicated than building a curved plough, so the old Muko and his family went into battle. With more than 20 helpers, two four-fours were built in just two days. Wheel ox cart.

Of course, this kind of bullock cart is the kind with a turntable on the front axle, that is, a wooden turntable that can turn three hundred and sixty degrees is added to the front axle. The turntable is installed on the load-bearing axle below, and the upper layer of the turntable is the car. frame.

　　In this way, when turning, the turntable can move freely, so that the four-wheel ox cart can make small-angle turns.

　　 As for the animals that are pulled, they are naturally powerful to tame the bison. Although there are not many tamed bisons in the tribe now, UU reading www.uukanshu.com, but in the future there will be more and more tamed bisons. Pulling out two cows to pull the cart is nothing at all.

　　 These two newly built bullock carts immediately became the most famous celebrities in the tribe. Both adults and children want to ride in this bullock cart and feel the taste of traveling long distances without having to walk on their own.

　　 It’s absolutely no problem for this cart to pull a one-kilo catty item. Even if it’s pulling people, it can pull seven or eight adults at a time.

　　 A pair of stone mills weighs about 200 kilograms. Ten sets of stone mills and two bullock carts can be pulled from the tribe to the bottom of the small salt mountain at one time.

　　 Under the arrangement of the stone bear, a hayloft was also set up at the foot of the small salt mountain. By then, these ten stone mills will be placed here to grind the salt blocks mined from the salt mountain.

　　 In addition to the haylofts where the stone mills are placed, there are also haylofts for boiling salt. The big iron pots that the stone bears originally cast for the tribe came in handy.

　　 Originally, the stone bear cast 20 large iron pots for the tribe. This time, because of the need to boil salt, the stone bear simply had to come out five large iron pots.

　　 This kind of big iron pot is not small, one weighs about twenty catties, which is about the same size as the later Liuyin iron pot.

　　 Now these iron pots have also been pulled over, and they rested securely on the clay stove just built.

　　 But you don’t need coal to cook salt. Just picking some firewood from the woods is enough to cook salt.

　　 Almost all members of the tribe in the tribe were dispatched early in the morning, and even the people who cultivated the land and planted seeds suspended their work. The news that Master Guardian will teach the tribesmen how to make salt has spread throughout the tribe in the past two days, and all tribesmen will not let this opportunity pass.

　　 Although food is very important, it is undoubtedly more important than salt...