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A screwdriver is a popular alcoholic highball drink made with orange juice and vodka. In the UK, it is referred to as a "vodka and orange". While the basic drink is simply the two ingredients, there are many variations. Many of the variations have different names in different parts of the world.
A screwdriver is a tool, manual or powered, used for driving screws. A typical simple screwdriver has a handle and a shaft, ending in a tip the user puts into the screw head before turning the handle. This form of the screwdriver has been replaced in many workplaces and homes with a more modern and versatile tool, a power drill, as they are quicker, easier, and can also drill holes. The shaft is usually made of tough steel to resist bending or twisting. The tip may be hardened to resist wear, treated with a dark tip coating for improved visual contrast between tip and screw—or ridged or treated for additional 'grip'. Handles are typically wood, metal, or plastic and usually hexagonal, square, or oval in cross-section to improve grip and prevent the tool from rolling when set down. Some manual screwdrivers have interchangeable tips that fit into a socket on the end of the shaft and are held in mechanically or magnetically. These often have a hollow handle that contains various types and sizes of tips, and a reversible ratchet action that allows multiple full turns without repositioning the tip or the user's hand.
Peter Lymburner Robertson was a Canadian inventor, industrialist, salesman, and philanthropist who popularized the square-socket drive for screws, often called the Robertson drive. Although a square-socket drive had been conceived decades before, it had never been developed into a commercial success because the design was difficult to manufacture. Robertson's efficient manufacturing technique using cold forming for the screw's head is what made the idea a commercial success. He produced his screws in his Milton, Ontario, factory starting in 1908. The brand has been sold over the years, and the manufacturing for the present corporation is done in Jiaxing, Zhejiang, China; but the Milton, Ontario, building was still a head office for a long time before moving to nearby Burlington, Ontario.
In cultural anthropology and cultural geography, cultural diffusion, as conceptualized by Leo Frobenius in his 1897/98 publication Der westafrikanische Kulturkreis, is the spread of cultural items—such as ideas, styles, religions, technologies, languages—between individuals, whether within a single culture or from one culture to another. It is distinct from the diffusion of innovations within a specific culture. Examples of diffusion include the spread of the war chariot and iron smelting in ancient times, and the use of automobiles and Western business suits in the 20th century.
Witold Rybczynski is a Canadian American architect, professor and writer. He is currently the Martin and Margy Meyerson Professor Emeritus of Urbanism at the University of Pennsylvania.
Home: A Short History of An Idea is a book published in 1986 by Canadian architect, professor and writer Witold Rybczynski.
A Robertson screw, also known as a square screw or Scrulox, is a type of screw with a square-shaped socket in the screw head and a corresponding square protrusion on the tool. Both the tool and socket have a slight taper. Originally designed to enable the screws to be made using cold forming of the heads, the taper has two other advantages which have helped popularize it: It makes inserting the tool easier, and helps keep the screw on the tool without the user having to hold it there. The Robertson screw is specified as ANSI Type III Square Center.
A worm drive is a gear arrangement in which a worm meshes with a worm wheel. The two elements are also called the worm screw and worm gear. The terminology is often confused by imprecise use of the term worm gear to refer to the worm, the worm wheel, or the worm drive as a unit.
Agostino Ramelli was an Italian engineer best known for writing and illustrating the book of engineering designs Le diverse et artificiose machine del Capitano Agostino Ramelli, which contains, among others, his design for the bookwheel.
A manual impact driver is a tool that delivers a strong, sudden rotational force and forward thrust when struck on the back with a hammer. It is often used by mechanics to loosen larger screws (bolts) and nuts that are corrosively "frozen" or over-torqued. The direction can also be reversed for situations where screws have to be tightened with torque greater than a screwdriver can reasonably provide.
Acquainted with the Night: Excursions through the World After Dark is a non-fiction book by Christopher Dewdney about various aspects of night. It was first published in 2004 by HarperCollins. It uses the same title as the Robert Frost poem "Acquainted with the Night". The book consists of 14 chapters, with one chapter dedicated to each hour of the night, from 6 pm to 5 am. Mini-essays populate each chapter which each follow a theme, like nocturnal creatures, dreams, astronomy, and mythology. Other subjects and topics touched upon include science, art, culture, natural history, superstitions, and psychology. The book was a finalist for the 2004 Governor General's Awards and for the 2005 Charles Taylor Prize. It tied with Dark Matter: Reading The Bones for the World Fantasy Award in Anthologies.
The bookwheel is a type of rotating bookcase that allows one person to read multiple books in one location with ease. The books are rotated vertically similar to the motion of a water wheel, as opposed to rotating on a flat table surface. The design for the bookwheel originally appeared in a 16th-century illustration by Agostino Ramelli at a time when large books posed practical problems for readers. Ramelli's design influenced other engineers and, though now obsolete, inspires modern artists and historians.
In books and other works, a subtitle is an explanatory or alternate title. As an example, Mary Shelley gave her most famous novel the title Frankenstein; or, The Modern Prometheus; by using the subtitle The Modern Prometheus, she references the Greek Titan as a hint of the novel's themes.
One Good Turn may refer to:
A screw and a bolt are similar types of fastener typically made of metal and characterized by a helical ridge, called a male thread. Screws and bolts are used to fasten materials by the engagement of the screw thread with a similar female thread in a matching part.
In manufacturing, threading is the process of creating a screw thread. More screw threads are produced each year than any other machine element. There are many methods of generating threads, including subtractive methods ; deformative or transformative methods ; additive methods ; or combinations thereof.
Natalia Rybczynski is a Canadian paleobiologist, professor and researcher.
In metalworking and woodworking, an automatic lathe is a lathe with an automatically controlled cutting process. Automatic lathes were first developed in the 1870s and were mechanically controlled. From the advent of NC and CNC in the 1950s, the term automatic lathe has generally been used for only mechanically controlled lathes, although some manufacturers market Swiss-type CNC lathes as 'automatic'.
A hex key is a simple driver for bolts or screws that have heads with internal hexagonal recesses (sockets).
References
- ↑ Rybczynski, Witold (2000), One Good Turn: A Natural History of the Screwdriver and the Screw , Scribner, ISBN 978-0-684-86729-8, LCCN 00036988, OCLC 462234518. Various republications (paperback, e-book, braille, etc).