The screw jack can then be used to gently lower the trailer nose onto the tow ball.

The tobacco is kept under pressure using oak blocks and massive screw jacks, forcing nearly all the air out of the still-moist leaves.

Trim in pitch was achieved by adjusting the incidence of movable wing-tips using screw jacks.

A house jack, also called a screw jack is a mechanical device primarily used to lift buildings from their foundation for repairs or relocation.

Normally the latches are opened and closed by a screw jack powered by an electric actuator motor.

The Jeep came with a special cross shaped wrench, a screw jack and working lights.

The screw jack, butted against the stone sash, exerted its pressure sideways across the bars and their frame.

A manually operated screw jack was utilized to compress air or other gases up to 200 atm ( 3000 psi).

The beam was loaded into place with the screw jack making the Mayflower secure enough to continue the voyage.

The rotor blades used ailerons on the trailing edges with pitch control achieved by a screw jack.