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A geared continuous hinge is a type of continuous hinge used mostly on doors in high-traffic entrances and features gear teeth that mesh together under a cap that runs the length of the hinge. The hinges use a number of fasteners to attach the door to the frame from top to bottom to distribute a door’s weight more evenly along the frame to ...
Six-bar linkage from Kinematics of Machinery, 1876 In mechanics , a six-bar linkage is a mechanism with one degree of freedom that is constructed from six links and seven joints . [ 1 ] An example is the Klann linkage used to drive the legs of a walking machine.
An ornate brass door hinge A barrel hinge. A hinge is a mechanical bearing that connects two solid objects, typically allowing only a limited angle of rotation between them. Two objects connected by an ideal hinge rotate relative to each other about a fixed axis of rotation, with all other translations or rotations prevented; thus a hinge has one degree of freedom.
This video shows different parts and operation of the universal shaft. Spicer universal joints for motor cars, 1916. The main concept of the universal joint is based on the design of gimbals, which have been in use since antiquity. One anticipation of the universal joint was its use by the ancient Greeks on ballistae. [2]
A demonstration using planar links instead of bar links. The Sarrus linkage, invented in 1853 by Pierre Frédéric Sarrus, [1] is a mechanical linkage to convert a limited circular motion to a linear motion or vice versa [2] without reference guideways. It is a spatial six-bar linkage (6R) with two groups of three parallel adjacent joint-axes. [3]
It consists of four bodies, called bars or links, connected in a loop by four joints. Generally, the joints are configured so the links move in parallel planes, and the assembly is called a planar four-bar linkage. Spherical and spatial four-bar linkages also exist and are used in practice. [1] A pumpjack's main mechanism is a four-bar linkage
Put simply, hardware manufacturers must be able to trace their materials to their source, and provide traceability for their parts going into the supply chain, usually via bar codes or similar methods. This traceability is intended to help ensure that the right parts are used and that quality standards are met in each step of the manufacturing ...
A strut bar, strut brace, or strut tower brace (STB) is an automotive suspension accessory on a monocoque or unibody chassis to provide extra stiffness between the strut towers. With a MacPherson strut suspension system where the spring and shock absorber combine in one suspension unit, which also replaces the upper control arm, the entire ...