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Whitcomb L. Judson (March 7, 1843 – December 7, 1909) was an American machine salesman, mechanical engineer and inventor. He received thirty patents over a sixteen-year career, fourteen of which were on pneumatic street railway innovations.
In 1892, Whitcomb L. Judson, an American inventor from Chicago, patented the original design from which the modern device evolved. [1] The zipper gets its name from a brand of rubber boots (or galoshes) it was used on in 1923. The galoshes could be fastened with a single zip of the hand, and soon the hookless fasteners came to be called ...
In 1891 Chicago inventor Whitcomb L. Judson wanted an easier way to lace up his shoes so he devised a system of hooks and eyes, plus a slide mechanism, to fasten and unfasten the hooks. He exhibited his device at the 1893 World's Columbian Exposition .
Whitcomb Judson (1836–1909), U.S. – zipper Percy Lavon Julian (1899–1975), U.S. – chemical synthesis of medicinal drugs from plants Ma Jun ( fl. 220–265), China – south-pointing chariot (see differential gear ), mechanical puppet theater , chain pumps , improved silk looms
The Lapidary Journal Jewelry Artist is an American magazine dedicated to lapidary interests such as gemology, jewelry design, metalworking, mineralogy, rocks, and gemstones. The magazine was established in 1947 as the Lapidary Journal , and was renamed to its current title in 2005.
His original design consisted of 10-inch-long (250 mm) and 6-inch-wide (150 mm) palettes. Contrary to today's version of rubberized swim fins worn on the feet, Franklin's swim fins were originally intended for use on a person's hands. Shaped like lily pads or an artist's paint palette, they helped attain greater speed with each stroke. [11]
Thomas Midgley Jr. (May 18, 1889 – November 2, 1944) was an American mechanical and chemical engineer.He played a major role in developing leaded gasoline (tetraethyl lead) and some of the first chlorofluorocarbons (CFCs), better known in the United States by the brand name Freon; both products were later banned from common use due to their harmful impact on human health and the environment.
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