Chapter 157 Foot-operated drum combing yarn machine (please vote and subscribe)

The two talked, and soon it was dark. Bonfires were lit in the tribe again, and the aroma of food came out of the pottery pots.

You Fu, who went out hunting, also came back with his men. They also brought back a musk deer, which is a deer with two long fangs in its mouth, also known as a vampire deer, but it is not a blood-sucking animal, just because the two fangs are too scary. It is not very big, less than 20 kilograms of meat, but it is enough for their tribe to eat for one night.

"Chief Han, the bridge you built is really great. I hope I can cross the river here often in the future. Do you think it's okay?" You Fu happily came to Luo Chong and sat down.

"Of course, you can go to the east bank of the river more often in the future. If you encounter a strange tribe and can exchange some good things, you can also exchange them with me when you come back." Luo Chong said with a smile.

"Really, that's great. When this ox cart is ready, we will go to the East Coast. We haven't been there much. By the way, Han leader, can your bridge pass the ox cart? Will it collapse?" "

Hahaha, how is that possible? We built that bridge for ox carts to pass. The ox cart you saw before has already passed. Don't worry, it won't collapse." Luo Chong laughed.

"Okay, okay, that's fine. You can eat slowly. I'll go and plan with the tribesmen how to get to the East Coast." You Fu got the answer he wanted, and happily stood up and said goodbye to Luo Chong.

Luo Chong also smiled and nodded, and ate dinner with Xiaodie again.

The night gradually darkened, and many tribesmen fell asleep. Occasionally, the footsteps of the soldiers patrolling the night guard post could be heard.

In a thatched house beside the wall, Luo Chong hugged Xiaodie, playing with her long hair, thinking about how to spin wool.

There is a difference between wool spinning and cotton spinning. Cotton fiber is easier to spin than wool fiber. Luo Chong has seen cotton spinning machines. After all, this is the mainstream, with the most information. Textbooks are full of that thing. Just take a cotton ball and you can spin the thread. The spinning machine will automatically extract the cotton fiber from the cotton ball and wind it into cotton thread, that is, cotton yarn.

But wool fiber is not the same. Although wool spinning and cotton spinning are similar in theory, wool fiber must have a pretreatment process, which is combed roving. To put it bluntly, it is easy to understand, just like combing a large ball of alpaca hair to make it smooth.

When the alpaca hair is just cut, it is in the form of sheets stuck together, and then after washing and drying, it becomes a messy ball. The order of the fibers is very messy, horizontal, vertical, oblique, and circular, a messy ball, so such wool fibers cannot be used directly for spinning. They must be combed before they can be used for spinning, that is, use a comb to comb all the wool fibers into one direction.

After sorting out the process of spinning wool in his mind, Luo Chong fell into a deep sleep while thinking about the structure of the combing machine.

The next morning, the alpaca wool was not dry yet, and Luo Chong coaxed Xiaodie to cut the alpaca wool. He had to build the machine he had in mind first.

The first thing to consider when making a machine is the purpose of the work, which is to smooth the fibers, and the number of times should be many. In summary, this machine must be able to comb the wool fibers many times.

So Luo Chong conceived a six-axis drum combing roving machine, a triangular main support bracket, on which a 50-centimeter-diameter wooden drum is mounted, and then two 20-centimeter-diameter drums are installed in front and behind this drum, and there are three small drums with a diameter of 15 centimeters on the main drum.

The surface of the drum is glued with the needle skin of a kind of needle-skin vitex, which is a kind of vitex exchanged from the thorn tribe at the spring meeting. The surface of the vitex is densely covered with short and slender spikes, about three millimeters long, just like the short thorns on the surface of the cocklebur, which can easily catch the hair, just like the effect of sanding belts.

Glue the six rollers with needle skins, and then install wooden gears and pedal transmission mechanisms. The left and right sets of pedal transmission rods drive the largest main roller to rotate counterclockwise, and the main roller then drives the other five small rollers to rotate clockwise through gears.

In this way, the worker who operates the machine only needs to sit in front of the machine, keep stepping on the pedals with both feet to drive the machine to rotate, and then manually put the cleaned wool fibers evenly on the feed plate, and the needle skin on the surface of the main drum can stick the wool fibers to the top, and then when the hung wool fibers pass the junction with the small drum, the main and auxiliary drums move in the opposite direction, and the needle skins on the surfaces of the two drums will continuously tear, disassemble, and straighten the wool fibers.

In this way, after the two drums tear in opposite directions for a week, the straightened wool fibers continue to be sent forward, and continue to tear, stretch, and straighten them when passing the next junction of the main and auxiliary drums. The tearing, stretching, and straightening are repeated five times in a row, and the straightened wool fibers are brought to the junction of the main drum and the yarn outlet plate.

The inner end of the yarn outlet plate should be ground into a comb shape, and then the wool fibers brought from the main drum are scraped off and aggregated into a fiber strip as thick as a finger. This wool fiber strip is as soft and smooth as cotton candy, and the fiber direction is consistent.

Then the wool fiber strips, that is, roving, are connected together to form a long yarn strip, which can be placed on the spinning machine to be spun into wool yarn.

The entire combed roving machine is made entirely of hard oak, with a drum width of 65 cm. It is composed of a main drum and five auxiliary drums as the main body. The pedal transmission rod provides power to the main drum, and the gear set controls the five auxiliary drums to rotate in the opposite direction. There is a feed plate and a yarn outlet plate in front and behind.

The worker only needs to step on the pedal and put the washed alpaca wool on the feed plate, and the final yarn outlet plate will continuously produce 65 cm long, finger-thick wool fiber strips. The efficiency is very fast, and the work is easy, and they all work while sitting.

This machine looks complicated, but it is actually very simple. To make the drum, you only need to make two round wooden boards with the same diameter, then punch a hole in the middle and put it on an axis, and then stick a layer of thin wooden strips along the two round wooden boards to make the surface of the drum, and then stick a layer of needle skin on the outside.

The most important part is the gear, which is directly sawed from the round wooden board. It is not troublesome to make, but it is very troublesome to calculate.

Luo Chong also considered using hemp rope as a belt at first, or using leather strips directly as a transmission mechanism, but later he simulated it in his mind and it still didn't work.

The principle of this machine is mainly to use the reverse force of the main and auxiliary rollers to tear the wool fibers, but the toughness of wool fibers is very strong. If the transmission device uses a belt or hemp rope, the torque of the machine will definitely not be large enough to tear apart the tangled wool balls, which will hang the machine and make it unable to run, so it is better to use gears directly.

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[I made a concept map of a pedal drum combing roving machine and sent it to the group album of the book friends group. Friends who don’t understand can refer to that picture to understand. The group number is in the introduction.]

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(End of this chapter)