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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.
A zipper, zip, or fly, formerly known as a clasp locker, is a commonly used device for binding together two edges of fabric or other flexible material. Used in clothing (e.g. jackets and jeans ), luggage and other bags , camping gear (e.g. tents and sleeping bags ), and many other items, zippers come in a wide range of sizes, shapes, and colors.
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 .
It is what clasps the zipper teeth or separates them depending on the direction of movement. Attached to it is the pull tab, the extension that is held when moving the zipper up or down. Some sliders come with a zip-lock feature in that, when the pull tab is lowered, it locks the slider in place and when raised, it unlocks it.
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
A longtime hairdresser at Fox Sports has sued the company, alleging that she was fired after raising a series of concerns about workplace misconduct, and after repeatedly refusing to have sex with ...
His base pay nearly doubled, from $810,000 to $1.55 million. And he wasn't alone. In the span of just a few weeks last winter, four of the 61 head coaches at Group of Five schools left to become ...
A lobster clasp, also known as a lobster hook, lobster claw, trigger clasp, or bocklebee clasp, is a fastener that is held closed by a spring. [ 1 ] [ 2 ] The lobster clasp is opened or closed by actuating a small lever, after which it is attached to (or removed from) a short link-chain or a ring-like structure.