hoister

A hoister is a person or machine that hoists, meaning to lift or pull something up, typically a heavy object. The term can refer to a skilled individual who operates hoisting equipment or to the equipment itself. In construction and maritime industries, hoisters are essential for moving materials, equipment, and sometimes even personnel to higher elevations or between different levels.

Manual hoisters, often called hand hoisters or manual chain hoists, utilize a system of pulleys and chains operated by human power. These are suitable for smaller loads and situations where powered machinery is not feasible or necessary. Powered hoisters, on the other hand, employ electric motors, hydraulic systems, or pneumatic power to lift much heavier loads with greater ease and speed. Examples of powered hoisters include cranes, winches, and forklifts, though the specific term "hoister" is often used more broadly to encompass the act of lifting itself rather than a specific type of machine.

The safe operation of hoisters is paramount. Operators must be trained in the proper use of the equipment, load capacities, and signaling. Regular maintenance and inspection of hoisters are also crucial to prevent accidents and ensure efficient operation. The primary function of a hoister, regardless of its form, is to overcome the force of gravity to move objects vertically or diagonally.