The winch, pulley, lever, wedge, and screw are considered the five simple machines of antiquity. The discovery of the screw is usually credited to Archimedes, who used an enclosed screw or auger to lift and move water. In his book, Machanica, Hero of...

A screw is a shaft with a helical groove or thread formed on its surface and provision at one end to turn the screw. Its main uses are as a threaded fastener used to hold objects together, and as a simple machine used to translate torque into linear...

Descriptions of nine types of nails and screws are provided. The characteristics of box nails, common nails, finishing nails, escutcheon nails and tacks are discussed. The uses of wood screws, sheet-metal screws, dry-wall screws and lag screws are also explained. Nails are the...

Taking them out isn't always easy. TO GET AT THE CHEVY'S failed ignition lock cylinder, the Saturday-- morning mechanic hoped a shortcut would trim the three-hour job, as detailed in the shop manual, down to an hour or so. After pulling the steering...

1. Do your research before visiting a dealership. Salespeople are experts at sales, not cars. Find out which vehicles fit your needs and budget, then read reviews to learn about the advantages and disadvantages of each. (For example, go to www.CARand DRIVER.com and check out...

R.I. Although I live in Rhode Island , this month the taxes, surcharges and fees on my Sprint wireless bill increased due to myriad new charges from Vancouver, Wash. ; Clark County, where Vancouver is located; and Washington State . Sprint's customer-service representative explained...