The main source of old canvas was tents, and it was during the Westward Expansion Movement, and although the Midwest was still empty, people moved from the East every day.

The west is vast, the railroad has not yet been popularized, and the automobile has not yet been invented, so tents are naturally indispensable in order to avoid eating and sleeping in the open during the migration process.

Most of the houses in the town would have an old tent, which Mary had bought at a low price, about seventy or eighty of them, neatly stacked in the utility room in front of them.

And it looks like these old tents have been cleaned and are very clean.

"Well done." The horse whistle nodded.

Mary asked, "So, how are you going to sew trousers out of them now?" ”

"Call the tailor and I'll tell you how."

After a while, several white women were called over, armed with simple sewing tools.

The horse whistle suddenly fell silent.

Looking at the simple tools of production in the hands of these tailors, he thought of an invention.

Sewing machine.

Strictly speaking, there were sewing machines in this era, and they existed decades ago, but because the design was not mature enough, it was not widely popularized, and only a small number of people used it.

Maybe he could improve the sewing machine, just like Watt did with the steam engine?

This seems completely feasible, after all, a mature sewing machine is not far away from the current era, and there should not be much improvement that needs to be made. Moreover, he lived in the countryside in his previous life, and he also had close contact with sewing machines and a little experience in using them.

"Do you have sewing machines?" The horse whistle asked.

A chubby white woman said, "I have one at home, but it doesn't work very well, and I feel like a hand-sewn one." ”

"When did you buy your sewing machine?"

"Half a year ago."

"How much did it cost?"

"About fifty dollars — my husband bought it, he must have had too much to drink."

Ma Whistle thought for a moment: "If it's not damaged, I want to buy it for thirty dollars, how about it?" ”

The white woman was stunned for a moment: "Really? ”

"Of course. But without rushing for now, let's talk about the design of canvas pants first. Ma Whistle pulled out a drawing on which he drew the most common styles of jeans in later generations.

"You need to make a pair of pants like this out of old canvas." He pointed to the drawings and introduced them to the tailors.

Strictly speaking, there are still some differences between the jeans on the drawings and the common styles of later generations, mainly the zipper.

- There are no zippers in this era.

And Ma Whistle did not intend to invent this thing, because he knew that with the current state of technology, it was not difficult to invent a zipper, but it was almost impossible, or impossible, to invent a good, durable and cheap zipper.

The zipper looks inconspicuous, but there are actually a lot of doorways.

In the original history, it was already in the 20th century that this technology really matured. Even into the 21st century, zipper technology was still evolving.

Today's jeans are still honestly made of canvas and rivets, which are already mature designs that have been tested by the market for a long time.

Ma Whistle believes that the jeans he designed will be more popular than the first pair of jeans in history, and westerners will fall in love with it sooner, and even more quickly become popular in the east and even around the world.

Not long after, under his guidance, the first pair of jeans was sewn.

If you don't count the zipper, its style looks almost the same as that of later generations, but the color is not the most popular blue in later generations, but brown.

"That's it, very good!" Ma Whistle praised, "According to this style, all the old canvas is made into trousers." ”

Mary asked, "Are you going to apply for a patent?" ”

Ma Whistle nodded: "It must be patented, believe me, this thing will definitely sell well." ”

"But...... You are an Indian. Mary spread her hands, "I'm not even sure if you'll be able to get into the patent office." ”

She's right, after all, the Indians' scalps are still being bounted. To whites, Indians are walking dollars.

The Indians went to the white city to apply for a patent, and it was simply a sheep's mouth.

Black people can't go, and although free blacks won't be directly caught and scalped, it is still difficult to apply for a patent.

The only viable way is to find a white man to apply.

"I know." Ma Whistle thought for a moment, "I'm going to ask Thomas to apply for a patent, and then send Floyd to be his bodyguard." ”

Thomas, as a white man with white roots, is naturally much easier to apply for a patent, and even if he encounters a little trouble, it will cost a few tens of dollars at most to make a dot.

Freud was naturally trying to restrain him, although Thomas Jr. was in the hands of the horse whistle, and Thomas should not dare to do anything, but for the sake of safety, it was safer to find two black men to accompany him.

Mary nodded: "That's all." ”

"By the way, since you're going to apply for a patent, what are you going to name these pants?"

Ma Whistle pondered for a moment: "Let's call it 'Clark cargo pants'." ”

He began to want to call it Apache cargo pants, but after thinking about it, he felt that the Indian name might cause trouble when applying for a patent, so he gave up.

The sentry then went to find Floyd Freeman, who was patrolling the town with several black policemen.

Although Floyd had a strong sentiment towards whites, he exercised restraint and did not take revenge on whites, at least so far, despite the repeated emphasis of Horse Whistle and Sheriff Tom.

"Chief." Seeing the horse whistle, the blacks greeted one after another. They naturally have respect for the man who gave them freedom and work.

The sentry walked up to Floyd: "How's it going, how does it feel to be a deputy sergeant?" ”

"It's not bad, these white people finally know how to be humble." Floyd said.

Ma Whistle smiled, and then changed the subject: "I have a task for you." In a few days, I'm going to send Mayor Thomas to the city to apply for a patent...... But you know, I can't trust white people. ”

"So, I need you to bring a black man with you to keep an eye on and protect Thomas until you return to Clark Town with your patent certificates. Can you do it? ”

"Absolutely." Floyd replied.

The two then talked for a while, and Freud said, "Chief, frankly, I don't quite understand why you are so kind to the white people. It stands to reason that you should hate them more than we do. ”

"Indeed." "But that's how I get my revenge, and I'm sure you'll see the effects of it, and for anyone, it's far more meaningful than slaughter and looting." ”

"Remember what I said to Tom." He finally admonished, "You are now a policeman, punish the offenders, and protect the law-abiding." ”

Leaving Freud, it was late in the evening.

Ma Whistle went to the white woman's house and bought the second-hand sewing machine for thirty dollars.

Then he was alone in the room, studying the antique sewing machine.