screw jack in a sentence
Examples
- Such screw jack type operation provided enough mechanical advantage for rams to overcome downhole pressures and seal the wellbore annulus.
- Each front corner of the chassis was fitted with a swing-out A-frame boom equipped with a screw jack and foot plate.
- This property is also the basis for the use of screws in screw top container lids, vises, C-clamps, and screw jacks.
- The so-called Barlow-Greathead shield consisted of an iron cylinder in diameter fitted with screw jacks which enabled it to be jacked forward.
- Before bringing the crane to the location, screw jacks were used to shore up the underground garage roof to hold the crane's weight.
- Screw jacks were placed on the corners of the railcar and the car was raised slightly to take its weight off of its wheels.
- Screws are widely used in threaded fasteners to hold objects together, and in devices such as screw tops for containers, vises, screw jacks and screw presses.
- The forward bracket had a pivot point, and the rear a screw jack that rotated the entire sighting system up or down around the front bracket's pivot.
- Opposing rams ( plungers ) in the ram cavity translated horizontally, actuated by threaded ram shafts ( piston rods ) in the manner of a screw jack.
- You should already have a screw jack with your spare tire, and if not you should get one anyways so you don't get stuck when a tire goes.