grooved wheel

См. также в других словарях:

• wheel and axle — noun Date: 1759 a mechanical device consisting of a grooved wheel turned by a cord or chain with a rigidly attached axle (as for winding up a weight) together with the supporting standards …   New Collegiate Dictionary

• wheel and axle — n. a larger wheel or pulley that is fixed to a shaft, a smaller wheel or pulley, or a drum, to increase mechanical advantage or speed: the wheels are often grooved and operated like pulleys …   English World dictionary

• wheel trolley — noun : a grooved rotating wheel attached to the end of the trolley pole of an electric railway car or bus for making constant rolling contact with the trolley wire …   Useful english dictionary

• trolley wheel — noun A grooved wheel by which a bus, tramcar, etc receives current from an overhead wire • • • Main Entry: ↑trolley …   Useful english dictionary

• Persian wheel — Persian Per sian, a. [From Persia: cf. It. Persiano. Cf. {Parsee}, {Peach}, {Persic}.] Of or pertaining to Persia, to the Persians, or to their language. [1913 Webster] {Persian berry}, the fruit of {Rhamnus infectorius}, a kind of buckthorn,… …   The Collaborative International Dictionary of English

• Wheellock — Wheellock, wheel lock or wheel lock, is a mechanism for firing a firearm. It was the next major development in firearms technology after the matchlock and the first self igniting firearm. The mechanism is so called because it uses a rotating… …   Wikipedia

• Fly system — Fly loft of the Theater Bielefeld in Germany A fly system, flying system or theatrical rigging system, is a system of lines (e.g. ropes), blocks (pulleys), counterweights and related devices within a theatre that enable a stage crew to quickly,… …   Wikipedia

• Band pulley — Pulley Pul ley, n.; pl. {Pulleys}. [F. poulie, perhaps of Teutonic origin (cf. {Poll}, v. t.); but cf. OE. poleine, polive, pulley, LL. polanus, and F. poulain, properly, a colt, fr. L. pullus young animal, foal (cf. {Pullet}, {Foal}). For the… …   The Collaborative International Dictionary of English

• Belt pulley — Pulley Pul ley, n.; pl. {Pulleys}. [F. poulie, perhaps of Teutonic origin (cf. {Poll}, v. t.); but cf. OE. poleine, polive, pulley, LL. polanus, and F. poulain, properly, a colt, fr. L. pullus young animal, foal (cf. {Pullet}, {Foal}). For the… …   The Collaborative International Dictionary of English

• block and tackle — Pulley Pul ley, n.; pl. {Pulleys}. [F. poulie, perhaps of Teutonic origin (cf. {Poll}, v. t.); but cf. OE. poleine, polive, pulley, LL. polanus, and F. poulain, properly, a colt, fr. L. pullus young animal, foal (cf. {Pullet}, {Foal}). For the… …   The Collaborative International Dictionary of English

• Cone pulley — Pulley Pul ley, n.; pl. {Pulleys}. [F. poulie, perhaps of Teutonic origin (cf. {Poll}, v. t.); but cf. OE. poleine, polive, pulley, LL. polanus, and F. poulain, properly, a colt, fr. L. pullus young animal, foal (cf. {Pullet}, {Foal}). For the… …   The Collaborative International Dictionary of English