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  2. Differential pulley - Wikipedia

    en.wikipedia.org/wiki/Differential_pulley

    Because there is a traveling pulley at the load, this doubles the mechanical advantage of the fixed (anchored) sprocket assembly, leading to a total mechanical advantage of 2 × ⁠ P 1 / P 1 − P 2 ⁠. For instance, a 1-ton differential chain fall might have a 15-pocket and a 14-pocket sprocket set.

  3. Hoist (device) - Wikipedia

    en.wikipedia.org/wiki/Hoist_(device)

    Hoist atop an elevator. 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.

  4. Hoist (mining) - Wikipedia

    en.wikipedia.org/wiki/Hoist_(mining)

    A drum hoist (steel wire rope visible) and motor. In underground mining a hoist or winder [1] is used to raise and lower conveyances within the mine shaft.Modern hoists are normally powered using electric motors, historically with direct current drives utilizing Ward Leonard control machines and later solid-state converters (), however modern large hoists use alternating current drives that ...

  5. Hoist controller - Wikipedia

    en.wikipedia.org/wiki/Hoist_controller

    A hoist controller is the controller for a hoist. The term is used primarily in the context of electrically operated hoists, but it is apparent that the control systems of many 20th century steam hoists also incorporated controllers of significant complexity. Consider the control system of the Quincy Mine No. 2 Hoist. [1]

  6. The 50 men accused in mass rape of Gisèle Pelicot - AOL

    www.aol.com/50-men-accused-mass-rape-072159807.html

    They are young, old, burly, thin, black and white. Among them are firefighters, lorry drivers, soldiers, security guards, a journalist and a DJ. These are the 50 men accused of raping Gisèle ...

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  8. Here Are The All-Time Record Cold Low Temperatures In All 50 ...

    www.aol.com/heres-time-record-cold-low-170000238...

    Even Florida has seen a subzero temperature with Tallahassee dropping to minus 2 degrees during the most brutal U.S. cold outbreak on record in Feb. 1899. Montana is the coldest in continental U.S ...

  9. Man documents inflated grocery prices in Alaskan hometown ...

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    In the most recent video, Magdanz described his visit to the newest grocery store in Kotzebue, recording some food and drink prices there.. Butter was on sale for $8.14 per pound, a quart of ...

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