jackscrew

• Dispositif mécanique composé d'un vérin ou d'un cric actionné par une vis, utilisé pour soulever de lourdes charges ou exercer une force par l'intermédiaire d'un mécanisme à filetage.

A mechanical device consisting of a screw-operated jack, used for lifting heavy loads or applying force through a threaded mechanism.

1. Screw-operated jackC1formaltechnical

   A mechanical device that uses a screw mechanism to lift heavy objects or apply great force.

   Cric à vis

   • The mechanic used a jackscrew to lift the engine block.
   • A jackscrew is essential for raising heavy machinery in workshops.
   • The old jackscrew required significant effort to turn.