| Swivel chairs rotate about a vertical axis. These were | | | | structure. |
| invented by Thomas Jefferson in the United States. | | | | A third design is an empty cylindrical rod that has |
| They are often found on casters as well. Swivel desk | | | | another rod that is smaller, inside. They are prevented |
| chairs are available in many varieties and in vibrant | | | | from separating by flanges. The device may be |
| colors. These are made by the best quality | | | | connected to either end. A swivel joint for a pipe is |
| craftsmanship available. They make any office | | | | often a threaded link, in which at least one of the pipes |
| complete and are comfortable to sit and work in. They | | | | is bent, often at an angle of 45 or 90 degrees. The |
| give built-in lumbar support, pneumatic seat elevation | | | | connection is squeezed, enough to be water or air tight |
| adjustment, rear height and seat depth correction. | | | | and then tightened further. |
| A swivel is a connection that allows the connected | | | | A part found in rolling chairs, called the caster, is a type |
| object, such as a gun or chair to spin horizontally or | | | | of wheel mounted with an offset navigation pivot. This |
| vertically. A regular design for a swivel is a cylindrical | | | | enables the wheel to automatically rotate to line up |
| shaft that can turn freely inside a support structure. | | | | with the direction from which it is pushed. Internet |
| The rod is usually held in place by a nut, washer or by | | | | provides access to various websites displaying |
| thickening the rod. The apparatus can be connected to | | | | different types of swivel chairs, along with beautiful |
| the ends of the rod or the center. Another familiar | | | | pictures. Some offer a gallery of pictures of swivel |
| design is a ball that is able to revolve, within a support | | | | chairs, with a slideshow. |