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  2. 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.

  3. 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.

  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. Jack (device) - Wikipedia

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

    A 2.5-ton house jack that stands 24 inches from top to bottom fully threaded out. A house jack, also called a screw jack, is a mechanical device primarily used to lift buildings from their foundations for repairs or relocation. A series of jacks is used and then wood cribbing temporarily supports the structure. This process is repeated until ...

  6. Download, install, or uninstall AOL Desktop Gold

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    • 512 MB free hard disk space Internet connection. Download Desktop Gold. ... 2. Open the email. 3. Click Download AOL Desktop Gold or Update Now. 4.

  7. Ohio State overwhelms Oregon to win Rose Bowl and secure a ...

    www.aol.com/sports/college-football-playoff-ohio...

    No one can stand in Ohio State's way if the Buckeyes keep playing like this. The No. 8 Buckeyes absolutely throttled No. 1 Oregon in the first half on the way to a 41-21 Rose Bowl win on Wednesday ...

  8. Manning, Maxwell and Moore - Wikipedia

    en.wikipedia.org/wiki/Manning,_Maxwell_and_Moore

    Download as PDF; Printable version; In other projects Wikidata item; ... The company manufactured pressure gauges, valves, cranes, and hoists. History

  9. 702 H Street, NW, Suite 300, Washington, DC 20001 Tel: 202 ...

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    702 H Street, NW, Suite 300, Washington, DC 20001 Tel: 202-462-1177 • Fax: 202-462-4507 Mr. Charles Koch Chairman and CEO, Koch Industries P.O. Box 2256

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