Builder's hoist, with small petrol engine

Hoist or hoist can mean:- Image File history File links Download high resolution version (480x640, 48 KB) Summary I took this photograph. ... Image File history File links Download high resolution version (480x640, 48 KB) Summary I took this photograph. ... Gasoline, as it is known in North America, or petrol, in many Commonwealth countries (sometimes also called motor spirit) is a petroleum-derived liquid mixture consisting primarily of hydrocarbons, used as fuel in internal combustion engines. ... An engine is something that produces some effect from a given input. ...

• A verb meaning "to lift".
• In flag terminology, the half of a flag nearest to the flagpole.
• A 1994 Phish album: see Hoist (album)
• A Transformers toy and fictional character: see Hoist (Transformers)
• A lifting device: see below.

A hoist is a device used for lifting or lowering a load by means of a drum or lift-wheel around which rope or chain wraps. It may be manually operated, electrically or pneumatically driven and may use chain, fiber or wire rope as its lifting medium. "Overhead" lifting operates under special legal restrictions. A verb is a part of speech that usually denotes action (bring, read), occurrence (decompose, glitter), or a state of being (exist, stand). Depending on the language, a verb may vary in form according to many factors, possibly including its tense, aspect, mood and voice. ... The design and description of flags typically uses specialised flag terminology with precise and technical meanings (a form of jargon). ... This article is about the musical group. ... Hoist is an album by Phish. ... Transformer or Transformers may refer to: Transformer, an electrical device Transformer (album), Lou Reeds 1972 rock album Transformers (myth) of Pacific Northwest native myth The fictional Transformers Universe: Transformers Universes Transformers series, television series Transformers (comic), produced primarily by Marvel Comics (1984-1993), Dreamwave Productions (2002-2004), and IDW... Hoist serves as a repairman for the Autobots in the fictional Transformers Universes. ...

For a given Rated Load wire rope is of lighter weight per running foot but is limited to drum diameters far large than the liftwheel over which chain may function. Therefore a high-performance chain hoist may be of significantly smaller physical size than a wire rope hoist rated at the same working load. High speed lifting (60 ft./min +) requires wire rope over a drum because chain over a pocket wheel generates fatigue inducing resonance for long lifts.

Both systems over time fail through fatigue fractures if operated repeatedly at loads more than a small percentage of their tensile breaking strength. Hoists are often designed with internal clutches to limit operating loads below this threshold. Within such limits wire rope rusts from the inside outward while chain links markedly are reduced in cross section through innerlink wear. Sigificant repeat lubrication of both tensile systems is recommended to limit replacement cycles.

The unloaded wire rope of small hand powered hoists often exhibits a snarled "set" making the use of a chain hoist in this application less frustrating, but heavier.

A "hoist" normally is used for lifting (near vertical) and a "winch" is normally used for pulling (near horizontal).

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