Experts in Medicine
There is a well-documented trend of growth among black or African American female medical school graduates. Since 1986, the proportion of female graduates has increased 53%, and the proportion of male graduates has declined 39%.
Jan Ernst Matzeliger invented a shoemaking machine that increased shoemaking speed by 900%. Jan Matzeliger conceived, patented, built working models, and factory-tested a machine known as a shoe-lasting machine, and he eventually became a stockholder in the company that manufactured it. Matzeliger's shoe-lasting machine could produce 150 to 700 pairs of shoes a day.
Jan Matzeliger was born on September 15, 1852, in the port city of Paramariboin Dutch Guiana, now known as Surinam. His mother was a native Surinamese of African descent, and his father, a Dutch engineer who had been sent to the island colony to take charge of the government machine works, was a well-educated man and a member of a wealthy and aristocratic Dutch family.
Jan served as an apprentice in a government machine shop supervised by his father. He developed an interest in machines, eventually becoming a skilled machinist. At the age of 19 he signed on as a seaman with the Dutch East Indies Company and went to sea. He helped fix the engines on the steamship to which he was assigned. He spent two years sailing to the Far East, then came to North America with his ship. When his ship docked in Philadelphia in 1873, Jan Matzeliger left the Dutch East Indies Company and looked for work as a machinist in Philadelphia. By 1877, he spoke adequate English and had moved to Massachusetts.
After a while, Jan Matzeliger went to work in a shoe factory. At the time, no machine could attach the upper part of a shoe to the sole. This had to be done manually by a "hand laster"; a skilled one could produce 50 pairs in a ten-hour day. As he worked in shoe factories around Lynn and Boston, he heard it said many times that it was impossible to last shoes by machines; the job simply could not be done. In secret he started experimenting, first with a crude wooden machine, then with a model made out of scrap iron. For ten years he worked, steadily and patiently, with no encouragement. Indeed, when the news of his tinkering finally reached the public, there were jeers of derision. Metzeliger only smiled and continued working.
Finally in 1882, Jan Matzeliger felt he had perfected his machine to solve the impossible problem. When he applied for a patent and sent his diagrams to Washington, patent reviewers could not even understand them. They were so complicated that a man was dispatched from Washington to Lynn, Massachusetts to see the model itself. On March 20, 1883, patent number 274,207 was granted to Jan E. Matzeliger. Matzeliger's machine was able to turn out from 150 to 700 pairs of shoes a day versus an expert hand lasters fifty.
By 1889 the demand of the shoe lasting machine was overwhelming. A company was formed, The Consolidated Lasting Machine Company, where Matzeliger was given huge blocks of stock for his invention. His machine had revolutionized the entire shoe industry in the U.S . and around the world.
Unfortunately, Jan Matzeliger didn't live to see the fruits of his labor. Because he had sacrificed his health working exhausting hours on his invention and not eating over long periods of time, he caught a cold which quickly developed into tuberculosis. He died at age 37 on August 24, 1887.
Don't miss a single page. Find everything you need on our complete sitemap directory.
Listen or read the top speeches from African Americans. Read more
Read about the great African Americans who fought in wars. Read more
African Americans invented many of the things we use today. Read more
Thin jazz, think art, think of great actors and find them here. Read more
Follow the history of Black Americans from slave ships to the presidency. Read more
Olympic winners, MVPS of every sport, and people who broke the color barrier. Read more
These men and women risked and sometimes lost their life to fight for the cause. Read more
Meet the people who worked to change the system from the inside. Read more
Visit my RedBubble page and use Michael Arnold Art to create greeting cards, T-shirts, mugs, and more.
The variety and impressive numbers of mammals, birds and marine wildlife in Alaska draw visitors from all over the world. For some travelers, Alaska is wilderness, at least compared to what they may know from back home. The pristine wilderness of Alaska is, perhaps, the last vestige of thriving populations of North American wildlife. Where else can you see polar bears, bald eagles, blue and humpbacked whales, gray wolves, grizzly bears, orcas, lynx, moose, and hundreds of other rare and endangered species in their original and undisturbed natural habitats?
Enjoy our website filled with original signed acrylic paintings by award winning Artist Michael Arnold. Located in Citrus County Florida, Michael Arnold is a the editor at the Citrus County Chronicle. When he's not busy being an editor, he is an avid artist who enjoys painting in a variety of styles. We hope you take the time to click on each image to see a larger view and to learn what the artist, Michael Arnold has to say about his paintings.
As dog owners and people who care deeply for animals and wildlife, we wanted our Dog Encyclopedia to be a website that could empower pet owners to create the most positive, loving environment for their dogs. Dog Encyclopedia realizes that owning a dog is like adding a new member to your family.
Floridian Nature has everything your are looking for in Florida nature. The wildlife of Florida is rich and varied, yet most of us are familiar with only a dozen or so species: the "well known endangered species such as manatees and panthers; those, like raccoons and squirrels, that have adapted to urban environments; the frightening alligators and black bears; and those like the armadillo who can't seem to cross the road. Yet they are just a few of the many animal species found in Florida.