A compact, portable device utilizing a gear system with a helical “worm” engaging a toothed wheel provides significant mechanical advantage for lifting or pulling heavy loads. This simple machine is often employed in applications requiring high force multiplication, such as hoisting engines, securing cargo, or tensioning cables, making it a valuable tool in various industries from automotive repair to construction.
The high gear ratio of this mechanism allows for precise control and secure holding of the load, crucial for safety and operational efficiency. Its self-locking nature prevents unintentional release, a significant advantage when working with suspended weights. Developed over centuries from ancient screw pump designs, this technology continues to find relevance due to its reliability and compact form factor. Its adaptability contributes to its widespread use across a range of modern applications.
