screw mechanism

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• Screw theory — was developed by Sir Robert Stawell Ball in 1876, for application in kinematics and statics of mechanisms (rigid body mechanics). It is a way to express displacements, velocities, forces and torques in three dimensional space, combining both… …   Wikipedia

• Screw conveyor — Screw conveyors have been a popular material handling mechanism throughout history. They are used in many bulk handling industries. Although inclined screw conveyors can function as an Archimedes screw, many bulk systems have chutes guiding… …   Wikipedia

• Screw-cutting lathe — A screw cutting lathe is a machine (specifically, a lathe) capable of cutting very accurate screw threads via single point screw cutting (which is the process of precisely guiding the motion of the tool bit in relation to the rotating motion of… …   Wikipedia

• Screw — This article is about the fastener. For other uses, see Screw (disambiguation). Screws come in a variety of shapes and sizes for different purposes. U.S. quarter coin (diameter 24 mm) shown for scale. A screw, or bolt, is a type of fastener… …   Wikipedia

• Mechanism (engineering) — A mechanism is a device designed to transform input forces and movement into a desired set of output forces and movement. Mechanisms generally consist of moving components such as gears and gear trains, belt and chain drives, cam and follower… …   Wikipedia

• Rotary screw compressor — A rotary screw compressor is a type of gas compressor which uses a rotary type positive displacement mechanism. The mechanism for gas compression utilises either a single screw element or two counter rotating intermeshed helical screw elements… …   Wikipedia

• Archimedes' screw — was operated by hand and could raise water efficiently …   Wikipedia

• Machine screw — Machine Ma*chine (m[.a]*sh[=e]n ), n. [F., fr. L. machina machine, engine, device, trick, Gr. ?, from ? means, expedient. Cf. {Mechanic}.] 1. In general, any combination of bodies so connected that their relative motions are constrained, and by… …   The Collaborative International Dictionary of English

• Differential screw — differential dif fer*en tial, a. [Cf. F. diff[ e]rentiel.] 1. Relating to or indicating a difference; creating a difference; discriminating; special; as, differential characteristics; differential duties; a differential rate. [1913 Webster] For… …   The Collaborative International Dictionary of English

• Feed screw — Feed Feed, n. 1. That which is eaten; esp., food for beasts; fodder; pasture; hay; grain, ground or whole; as, the best feed for sheep. [1913 Webster] 2. A grazing or pasture ground. Shak. [1913 Webster] 3. An allowance of provender given to a… …   The Collaborative International Dictionary of English

• Direct drive mechanism — A Direct drive mechanism is one that takes the power coming from a motor without any reductions (such as a gearbox). Contents 1 Advantages 2 Disadvantages 3 Applications 3.1 High speed …   Wikipedia