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2. Jack (device) - Wikipedia

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

   Jack (device) Jack which can lift a mobile home. A jack is a mechanical lifting device used to apply great forces or lift heavy loads. A mechanical jack employs a screw thread for lifting heavy equipment. A hydraulic jack uses hydraulic power. [ 1] The most common form is a car jack, floor jack or garage jack, which lifts vehicles so that ...

3. Pallet jack - Wikipedia

   en.wikipedia.org/wiki/Pallet_jack

   The front wheels inside the end of the forks are mounted on push rods attached to linkages that go to levers attached to the jack cylinder. As the hydraulic jack at the 'tiller' end is raised, the links force the wheels down, raising the forks vertically above the front wheels, raising the load upward until it clears the floor.

4. Crane (machine) - Wikipedia

   en.wikipedia.org/wiki/Crane_(machine)

   The success of his hydraulic crane led Armstrong to establish the Elswick works at Newcastle, to produce his hydraulic machinery for cranes and bridges in 1847. His company soon received orders for hydraulic cranes from Edinburgh and Northern Railways and from Liverpool Docks, as well as for hydraulic machinery for dock gates in Grimsby. The ...

5. Swing axle - Wikipedia

   en.wikipedia.org/wiki/Swing_axle

   Swing axle. A swing axle is a simple type of independent suspension, almost always for the rear axles, designed and patented by Edmund Rumpler in 1903. This was a revolutionary invention in automotive suspension, allowing driven (powered) wheels to follow uneven road surfaces independently, thus enabling the vehicle's wheels to maintain better ...

6. Lift slab construction - Wikipedia

   en.wikipedia.org/wiki/Lift_slab_construction

   Lift slab construction. Lift slab construction (also called the Youtz-Slick Method) is a method of constructing concrete buildings by casting the floor or roof slab on top of the previous slab and then raising (jacking) the slab up with hydraulic jacks. This method of construction allows for a large portion of the work to be completed at ground ...

7. Line shaft - Wikipedia

   en.wikipedia.org/wiki/Line_shaft

   Line shaft. Four wool spinning machines driven by belts from an overhead lineshaft ( Leipzig, Germany, circa 1925) The belt drives of the Mueller Mill, model and reality, in motion. A line shaft is a power-driven rotating shaft for power transmission that was used extensively from the Industrial Revolution until the early 20th century.