This is the simplest and most common differential unit found in cars and light trucks, it contains four gears (spider gears) which allow the rear wheels to turn at differing speeds so that cornering doesnt cause the inside wheel to be drug along by the outside wheel.
Loom is a mechanical device which is used to produce woven fabric by the insertion of warp and weft yarn. In weaving technology; loom is the principle mechanical device for weaving. Various types of loom are used for doing the weaving task. Various types of designed fabric are produced by changing the machine setting.
A round loom is ideal for creating hats without side seams. Looms come in several types and specialties, helping crafters more easily produce knitted materials. A knitting loom can be used to produce the same pattern commonly done using knitting needles. Looms can be used to make rugs, tapestries, curtains and blankets.