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A corkscrew is a tool for drawing corks from wine bottles and other household bottles that may be sealed with corks. In its traditional form, a corkscrew simply consists of a pointed metallic helix (often called the "worm") attached to a handle, which the user screws into the cork and pulls to extract it. Corkscrews are necessary because corks ...
Herbert Allen (1907-1990) was an American inventor.. Allen was born May 2, 1907. He graduated from Rice University in 1929. [1]Herbert Allen invented the Screwpull brand of corkscrews in 1979.
A wall-mounted corkscrew. The screw enters the cork below. When the lever is lifted, the screw is pulled directly up, and then unscrewed from the cork. The freed cork falls out of the hole on the side. Until many years after the invention in 1892 [4] of crown corks, beer bottles were stopped with corks. The increasing popularity of bottled beer ...
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The self-locking property is also key to the screw's use in a wide range of other applications, such as the corkscrew, screw top container lid, threaded pipe joint, vise, C-clamp, and screw jack. Screws are also used as linkages in machines to transfer power, in the worm gear, lead screw, ball screw, and roller screw.
A screw-propelled vehicle. A screw-propelled vehicle is a land or amphibious vehicle designed to cope with difficult terrain, such as snow, ice, mud, and swamp. Such vehicles are distinguished by being moved by the rotation of one or more auger-like cylinders fitted with a helical flange that engages with the medium through or over which the vehicle is moving.
The screw pump is the oldest positive displacement pump. [1] The first records of a water screw, or screw pump, date back to Hellenistic Egypt before the 3rd century BC. [1] [3] The Egyptian screw, used to lift water from the Nile, was composed of tubes wound round a cylinder; as the entire unit rotates, water is lifted within the spiral tube to the higher elevation.
Operation Corkscrew was the code name for the Allied invasion of the Italian island of Pantelleria (between Sicily and Tunisia) on 11 June 1943, prior to the Allied invasion of Sicily, during the Second World War. [3]