Ratchet-wheel
121ХРАПОВИК — (Ratchet wheel) механизм для сообщения валу прерывистого вращательного движения в одном направлении. X. состоит из храпового колеса (зубчатого) и собачки, шарнирно соединенной с коромыслом, качающимся около центра храпового колеса. Собачка… …
122Stephenson, George — born June 9, 1781, Wylam, Northumberland, Eng. died Aug. 12, 1848, Chesterfield, Derbyshire English engineer, principal inventor of the locomotive. Son of a coal mine mechanic, he himself became chief mechanic at a coal mine, where his interest… …
123pawl — /pɔl / (say pawl) noun a pivoted bar adapted to engage with the teeth of a ratchet wheel or the like so as to prevent movement or to impart motion. {? from Dutch pal} …
124pawl — n. lever which engages with a ratchet wheel so as to permit movement in one direction only …
125pal|let — pal|let1 «PAL iht», noun. a bed of straw, or any other small or poor bed: »a humble pallet. A pallet of mats (Washington Irving). ╂[< Old French paillet < paille straw < Latin palea straw, chaff] pal|let2 «PAL iht», noun. 1. a flat blade …
126Enigma machine — Military Enigma machine …
127Perpetual motion — For other uses, see Perpetual motion (disambiguation). Robert Fludd s 1618 water screw perpetual motion machine from a 1660 wood engraving. This device is widely credited as the first recorded attempt to describe such a device in order to produce …
128Wrench — For other uses, see Wrench (disambiguation). A set of chrome vanadium metric wrenches, open at one end, box/ring at the other. This type is commonly known as a combination wrench. A wrench or spanner is a tool used to provide grip and mechanical… …
