Box-spring

A box-spring (or divan in the UK) is a type of bed base typically consisting of a sturdy wooden frame covered in cloth and containing springs. Usually the box-spring is placed on top of a wooden or metal bedframe which sits on the floor and acts as a brace, except in the UK where the divan is more often fitted with small castors. The box-spring is usually the same size as the much softer mattress which is placed above the box-spring. Working together, the box-spring and mattress (with optional bed frame) make up a bed. It is common to find a box-spring and mattress being used together without the support of a frame underneath, the box spring being mounted directly on casters standing on the floor.

The purpose of the box-spring is threefold:

The first rectangular spring-cushioned wire frames to support mattresses did not have wood rims or cloth covers. These were called bedsprings. More and more box-springs are being made out of wood, then covered in fabrics. Wood makes a better support system for the newer memory foam and latex mattresses. The newest design in box-springs is the folding box spring made of wood or metal, then covered in fabric which can fold in half and can be sent by shipping and courier companies.

Box Spring

Box Spring is a geyser in the Lower Geyser Basin of Yellowstone National Park in the United States.

Box Spring is part of the Pink Cone Group. Other geysers in this groups are Bead Geyser, Dilemma Geyser, Labial Geyser, Narcissus Geyser, Pink Geyser, and Pink Cone Geyser. Eruptions of Box Spring last about 2 minutes and are 10 to 15 feet (3.0 to 4.6 m) high. The interval between eruptions is 10 to 90 minutes.

As its name indicates, Box Spring was a hot spring until the 1983 Borah Peak earthquake triggered activity in the spring and it began erupting. It was later discovered that Box Spring was recorded as being active in the 1870s.

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