a ball bearing is a type of rolling-element bearing which uses balls to maintain the separation between…
"When a ball is rolling on a horizontal plane, the centre of gravity is not raised, but moves in a straight…
"If the plane is inclined downwards, the ball is instantly thrown into motion, because the centre of…
After the softening process in the manufacturing of jute, the fibers are about six feet long, and are…
A mill furnished with heavy rollers, through which heated metal is passed, to form it into sheets, bars…
A circular frame of hard material that may be solid, partly solid, or spoked and that is capable of…