planet gearing
1Epicyclic gearing — or planetary gearing is a gear system that consists of one or more outer gears, or planet gears, revolving about a central, or sun gear. Typically, the planet gears are mounted on a movable arm or carrier which itself may rotate relative to the… …
2Sun and planet gear — The sun and planet gear (also called the planet and sun gear) was a method of converting reciprocal motion to rotary motion and utilised a reciprocating steam engine.It was likely invented by the Scottish engineer William Murdoch, an employee of… …
3sun-and-planet — /sʌn ən ˈplænət/ (say sun uhn planuht) adjective denoting a system of toothed gearing in which a small wheel moves round a larger wheel …
4Gear — For the gear like device used to drive a roller chain, see Sprocket. This article is about mechanical gears. For other uses, see Gear (disambiguation). Two meshing gears transmitting rotational motion. Note that the smaller gear is rotating… …
5Orrery — This article is about the mechanical device. For the British peerage, see Earl of Orrery. A small orrery showing earth and the inner planets An orrery is a mechanical device that illustrates the relative positions and motions of the planets and… …
6Watt , James — (1736–1819) British instrument maker and inventor The son of a Clydeside shipbuilder and house builder, Watt was born in Greenock, Scotland. At the age of 17 he started a career in Glasgow as a mathematical instrument maker. Through his shop,… …
7Differential (mechanical device) — For other uses, see Differential. A cutaway view of an automotive final drive unit which contains the differential Input …
8Hub gear — Sturmey Archer SX3 A Sturmey Archer AM bicycle hub gear mechanism wi …
9technology, history of — Introduction the development over time of systematic techniques for making and doing things. The term technology, a combination of the Greek technē, “art, craft,” with logos, “word, speech,” meant in Greece a discourse on the arts, both… …
10Transmission (mechanics) — Gearbox redirects here. For the video game developer, see Gearbox Software. 5 speed gearbox + reverse, the 1600 Volkswagen Golf (2009). A machine consists of a power source and a power transmission system, which provides controlled application of …
