Pallet jack
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A pallet jack, also known as a pallet truck or pallet pump, is a tool used to lift and move pallets. Pallet jacks are the most basic form of a forklift and are intended to move palletized loads within
Typical manual pallet jack (lowered)
Pallet jack in lowered position, allowing it to be inserted under a load on a pallet
Jack showing how wheels drop, lifting forks and load. The steering tiller and raised hydraulic cylinder are clearly visible on the right
Underside of a jack showing linkages under forks
Jack (device)
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A jack is a mechanical lifting device. Most often, the term "jack" denotes equipment used to apply great forces or lift heavy loads. There are also smaller, more delicate jacks used as part of the act
Pallet jack
…the jacking mechanism. 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…
A private in the Auxiliary Territorial Service using a jack to lift a staff car, January 1945
A jack which can lift a mobile home
Jackscrews are integral to the scissor jack, one of the simplest kinds of car jack still used.
A house jack, standing 24 in (61 cm) from top to bottom when fully extended, capable of lifting 2.5 tons