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A knuckle joint on a locomotive, seen behind the pin joint of the eccentric crank. Ball-point pen included for size. A mechanical joint is a section of a machine which is used to connect one or more mechanical parts to another. Mechanical joints may be temporary or permanent; most types are designed to be disassembled.
This version of the kinematic diagram has proven effective in enumerating kinematic structures in the process of machine design. [2] An important consideration in this design process is the degree of freedom of the system of links and joints, which is determined using the Chebychev–Grübler–Kutzbach criterion.
The diagram from Beard's 1897 coupler patent [1]. Janney couplers were first patented in 1873 by Eli H. Janney (U.S. patent 138,405). [2] [3] Andrew Jackson Beard was amongst various inventors that made a multitude of improvements to the knuckle coupler; [1] Beard's patents were U.S. patent 594,059 granted 23 November 1897, which then sold for approximately $50,000, and U.S. patent 624,901 ...
Retrieved from "https://en.wikipedia.org/w/index.php?title=Knuckle_joint_(mechanical)&oldid=1147111397"https://en.wikipedia.org/w/index.php?title=Knuckle_joint
Joint replacement of the hand is a procedure that was invented by the Scottish scientist, Mitchell McGuire. The procedure was considered a major breakthrough in the medical field at the time. However, it is now considered an almost standard operation. The first successful surgery of this kind was conducted on 21 December 1992, in New York City, US.
The function principles of the mechanic press machines differ in how to ensure the upper punch–main movement by cams, spindles-and friction drives, eccentric, knuckle-joints or by the round table principle, independent if the die-or lower punch movement is realized by cams- or eccentric systems or other mechanically or hydraulically combined systems.
Joint cracking is the manipulation of joints to produce a sound and related "popping" sensation. It is sometimes performed by physical therapists, chiropractors, and osteopaths [1] pursuing a variety of outcomes. The cracking of joints, especially knuckles, was long believed to lead to arthritis and other joint problems. However, this is not ...
The knuckles are the joints of the fingers. The word is cognate to similar words in other Germanic languages, such as the Dutch "knokkel" (knuckle) or German "Knöchel" (ankle), i.e., Knöchlein , the diminutive of the German word for bone ( Knochen ).