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%.
Thomas Elkins designed a device that helped with the task of preserving perishable foods by way of refrigeration. Elkins patented this refrigerated apparatus on November 4, 1879. and had previously patented a chamber commode in 1872 and a dining, ironing table and quilting frame combined in 1870.
Dr. Thomas Elkins was a pharmacist and respected member of the Albany community. An abolitionist, Thomas Elkins was the secretary of the Vigilance Committee. As the 1830’s drew to a close and the decade of the 1840’s began, committees of citizens were formed all across the north with the intention of protecting fugitive slaves from re-enslavement. As slave catchers sought fugitives vigilance committees provided legal assistance, food, clothing, money, sometimes employment, temporary shelter and assisted fugitives in making their way toward freedom. Albany had a vigilance committee in the early 1840’s and into the 1850’s.
Thomas Elkins was an avid inventor and designed many improvements for everyday items. Living in Albany New York he designed a new refrigeration device, that strangely enough could also be used to store corpses. At the turn of the century, the common way of keeping food cold was by placing items in a large container and surrounding them with large blocks of ice. Unfortunately, the ice generally melted very quickly and the food soon perished. On April 11, 1879 Thomas Elkins received patent number 221,222 for a "Refrigerating Apparatus" for "food or corpses," which provides a convenient container and method of chilling using the evaporation of water.
In 1805, an American inventor, Oliver Evans, designed the first refrigeration machine. The first practical refrigerating machine was built by Jacob Perkins in 1834; it used ether in a vapor compression cycle. An American physician, John Gorrie, built a refrigerator based on Oliver Evans' design in 1844 to make ice to cool the air for his yellow fever patients. German engineer Carl von Linden, patented not a refrigerator but the process of liquefying gas in 1876 that is part of today's basic refrigeration technology.
Thomas Elkins patent was for an insulated cabinet into which ice is placed to cool the interior. As such, it was a "refrigerator" only in the old sense of the term, which included non-mechanical coolers. Elkins acknowledged in his patent that "I am aware that chilling substances enclosed within a porous box or jar by wetting its outer surface is an old and well-known process."
A patent was also issued to Thomas Elkins on February 22, 1870 for a "Dining, Ironing Table and Quilting Frame Combined" (No. 100,020). The table (shown here) seems to be little more than a folding table.
The Minoans of Crete are said to have invented a flush toilet thousands of years ago; however, there is probably no direct ancestral relationship between it and the modern one that evolved primarily in England starting in the late 16th century, when Sir John Harrington devised a flushing device for his godmother Queen Elizabeth. In 1775 Alexander Cummings patented a toilet in which some water remained after each flush, thereby suppressing odors from below. The "water closet" continued to evolve, and in 1885, Thomas Twyford provided us with a single-piece ceramic toilet similar to the one we know today. In 1872, a U.S. patent was issued to Thomas Elkins for a a new article of chamber furniture which he designated a "Chamber Commode" (Patent No. 122,518). It provided a combination of "a bureau, mirror, book-rack, washstand, table, easy-chair, and earth-closet or chamber-stool," which might otherwise be constructed as several separate articles.
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Listen or read the top speeches from African Americans. Read more
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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.