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.
For example, here is how the woven label is made: The looms weave polyester yarns, recreating the logo submitted by the client in the form of artwork. The loom works with two threads, the warp and the weft. The threads are interlaced lengthwise (warp) and widthwise (weft). The modern computerised Jacquard loom provides a ribbon which is then cut by a hot knife to the desired dimensions. This cutting technique seals the label to prevent fraying.