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A chela (/ ˈ k iː l ə /) – also called a claw, nipper, or pincer – is a pincer-shaped organ at the end of certain limbs of some arthropods. [1] The name comes from Ancient Greek χηλή, through Neo-Latin chela. The plural form is chelae. [2] Legs bearing a chela are called chelipeds. [3]
Location of flight controls in a helicopter. Helicopter flight controls are used to achieve and maintain controlled aerodynamic helicopter flight. [1] Changes to the aircraft flight control system transmit mechanically to the rotor, producing aerodynamic effects on the rotor blades that make the helicopter move in a desired way.
A claw is a curved, pointed appendage found at the end of a toe or finger in most amniotes (mammals, reptiles, birds). Some invertebrates such as beetles and spiders have somewhat similar fine, hooked structures at lower elevations that allow the spider cells of their own species the end of the leg or tarsus for gripping a surface as they walk.
A hand imitating an ulnar claw. The metacarpophalangeal joints of the 4th and 5th fingers are extended and the Interphalangeal joints of the same fingers are flexed.. An ulnar claw, also known as claw hand or Spinster’s Claw, is a deformity or an abnormal attitude of the hand that develops due to ulnar nerve damage causing paralysis of the lumbricals.
The first locking pliers, with the trade name Vise-Grip, were invented by William S. Petersen in De Witt, Nebraska, United States in 1924. [ 1 ] [ 2 ] Later, in 1955, in the United Kingdom, M K Mole and Son, a hand tool manufacturing company, under the managing direction of Thomas Coughtrie , began making nearly identical pliers.
The lyrics of "21st Century Schizoid Man" were written by Peter Sinfield and consist chiefly of disconnected phrases which present a series of images in a fixed pattern. . The first line of each verse consists of two short phrases, while the second line is a single, more specific image, and the third is a longer phrase or a full sente
One side of the head has a poll [1] with either a smooth or textured surface and used for driving, while the other is formed into a pair of downward curving V-shaped claws and used for prying — most commonly extracting nails from wood. The greater the curve of the claw(s), and longer the handle, the greater the leverage that may be applied.
Medieval pincers found in Hamburg-Harburg (15th/16th century) As pliers in the general sense are an ancient and simple invention, no single inventor can be credited.Early metal working processes from several millennia BCE would have required plier-like devices to handle hot materials in the process of smithing or casting.