1800, the salesman of an insurance company in the United States is talking about business with customers. A shop assistant named wortmann worked hard to negotiate a big deal. When signing the contract, wolman handed the customer a beautiful quill pen and a bottle of ink for him to sign. Unexpectedly, the customer just dipped in ink and wanted to sign. Due to excessive force, the quill pen leaked a large pool of ink and stained the contract.

Please wait a moment. Wolman said to the customer, and then hurried back to get a new contract.

At this moment, a competitor standing next to wortmann immediately jumped in, signed a contract with the customer before wortmann arrived, and stole the big business.

This incident deeply stimulated wortmann. He made up his mind to design an ideal pen that can control water by himself.

According to the principle of capillary transport of liquid in plants, Wolman finally developed a new type of pen through unremitting efforts. Because the ink in this pen can be controlled by itself, it is called "fountain pen".