One way to quantify immigrantsâ contribution to the U.S. economy is to look at the wages and salaries they earn, as well as the income of immigrant-owned businesses, as a share of all wages, salaries, and business income in the United States.
Instead of taking 15 minutes to last a shoe, a sole could be attached in one minute. The efficiency of the machine resulted in mass productionâa single machine could last 700 shoes in a day, compared to 50 by a hand lasterâand lower prices. Jan Matzeliger obtained a patent for his invention in 1883. Tragically, he developed tuberculosis not long after and died at the age 37. He left his stock holdings to his friends and to the First Church of Christ in Lynn, Massachusetts. 1  Famous African American Inventors of the 19th- and Early 20th-Centuries. 2  The History of Shoes and Footwear. 3  Everything About The History of Shoes. 4  Classic Sweet and Spicy Festival Turkey Legs. 5  The Textile Revolution.
Werner von Siemens. Werner von Siemens invented âDynamoâ, âElectric Elevatorâ and âTrolleybusâ. Werner Von Siemens was a German inventor who made remarkable contributions to the fields of electronics and engineering. Born in Prussia (now a part of Germany) in 1816, he was the fourth of fourteen children. Without formally finishing high school, Siemens joined the Prussian Army to gain training in engineering which his father could not afford to give him.