Lifting jacks are used for leveling or positioning heavy equipment, lifting automobiles and for supporting structures. They typically use screw or cylinder-based actuators and are powered by hydraulic ...

Self-locking keeps tools like screw jacks from unwinding under load. Acme Screw Thread Profile by Wizard191 CC-BY-SA 3.0 Screw thread profiles can be modified from the standard V profile for ...

Even if you aren't the handiest person in the world, you've probably encountered a stripped screw or two in your time. They are a common enemy of the home do-it-yourselfer and can throw a wrench ...

With a ratcheting screwdriver you can tighten or loosen a screw while your hand and the screw remain in contact with the tool they allow you to turn the screwdriver (handle and stem) one way ...

Pallet jacks, also known as pallet trucks, are mechanical tools used to haul and maneuver items of freight. They are best suited for short distances and usually only elevate a load high enough for ...

I always think of jumping jacks as being quite an old-fashioned exercise. I remember them from primary school – ‘be a star!’ – and from Jane Fonda DVDs and Mr Motivator workouts on ...

Your car often needs to be raised when you work on it, and this makes a trolley jack essential. From an oil change to new brakes, exhaust or suspension, your jack will soon pay for itself and the ...

Jack Welch was the former CEO and Chairman of GE Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. David Kindness is a Certified Public ...

Jack Royston is Newsweek's Chief Royal Correspondent based in London, U.K. He reports on the British royal family—including King Charles III, Prince William, Kate Middleton, Prince Harry and ...

Watch the classic story of Jack and the Beanstalk told in 14 short video clips, for children aged 5-7. There is a new Resource Pack to go with the animation with guidance, worksheets and ...