Archive for the ‘ innerspring ’ Category

Mattress Protectors: Protecting Your Mattress and Yourself

Protecting Your Mattress and Yourself So you are buying or have just bought a new mattress. The sales person at the store, customer service rep on the phone, or the website selling the mattress recommends buying a mattress protector, too. "Why," you ask, "do I need a mattress protector?" Good question. Why or why not? We don't like the idea. For one thing, it's one more thing to buy. For another thing, we may remember the uncomfortable plastic sheets our parents put on mattresses when we...

See-Saw Support

See-Saw Support I remember when as a child I played with other children on a tilting board, variously called a "see-saw" or "teeter-totter." Pushing with our feet, we would alternately go up and down. Easy enough to do when we were both close to the same weight. This was where we learned the principle of the balance scale. When one end goes down, the other goes up. and it's the heavier end that goes down. That's the way it was on the see-saw. With an average first grader and a fifth...

What’s New in Box Springs?

What's New in Box Springs? For many of us, the box spring is a Ho-Hum item. We buy a mattress, and a box spring is included. When the new mattress is delivered and set up, the box spring is placed on the rolling steel frame, which is adjusted for fit. Then the new mattress is placed on the new box spring. We think we know what a box spring is, so we just take it for granted. The truth is, that plain old box spring under our bed might not be as old a design as we think. It may be something...

Nanocoils: The smallest mattress coils so far

Nanocoils: The smallest mattress coils so far It used to be that the shortest mattress coils were the 4" Bonnell coils in a sofabed mattress. The reason they were so short, when most coils were 7 or 8 inches high, was so the mattress could be folded to fit inside the sofa under the seat cushions. With the introduction of pocket coils, the trend was for innerspring coils, at least the wrapped coils, to become taller, up to 9 or 10 inches. This allowed greater conformabiity and more...

Minicoils or Microcoils?

   Minicoils or Microcoils? A previous blog article, Microcoils, covered the use of coils in mattresses that are significantly smaller than innerspring coils. In this article, I noted that some of these smaller coils are much smaller than others, and that there has not been a concensus on terminology. Until now, the whole category of small springs has been classified as microcoils. But now several manufacturers are placing two layers of these coils above the support core of a mattress....

Foam Springs

Foam Springs In February 2014, I posted an article about wood coils, a new kind of mattress innerspring invented and developed by a Hungarian company. Not long before the launch of wooden coils in the bedding market, another new kind of mattress spring was invented and introduced into the market by Willy Poppe, a Belgian. Poppe is CEO of a family-owned bedding manufacturer, Diamond Spring Company, in Sint-Niklaas, East Flanders, Belgium.                    Willy Poppe...

Coil-in-Coil Technology

[caption id="attachment_807" align="aligncenter" width="950"] Stearns & Foster's Intellicoil[/caption] Coil-in-Coil Technology [caption id="attachment_806" align="aligncenter" width="123"] Serta's Duet Coil[/caption]   Pocket coils were invented at the end of the 19th Century (1800's) by James Marshall, who began manufacturing them about 1900. Since then, individually wrapped pocket coils have been adopted by most of the major manufacturers of innerspring...

Pocket Coils

Pocket (Marshall) Coils [caption id="attachment_731" align="aligncenter" width="300"] Pocket coils Image from Simmons Beautyrest[/caption] Pocket coils, also known as pocketed coils, encased coils, wrapped coils or Marshall coils, are light gauge open-end coils in fabric pockets.  They were invented in 1900 by James Marshall, an Englishman who migrated to Canada. In Toronto, Ontario, Canada he founded the Marshall Mattress Company to make mattresses using his technology.  The company is...

Continuous Coils

Continuous Coils [caption id="attachment_719" align="aligncenter" width="347"] Looking down rows of continuous coils Image from Bedrooms & More, Seattle, Washington[/caption] Continuous coils are the least expensive type of coils used in innerspring mattresses. According to Seattle Mattress Company, this coil type was invented by Serta. Currently, Serta is the largest user of continuous coils. Serta's continuous coils are manufactured by Leggett & Platt under the trade name...

Offset (Karr) Coils

Offset (Karr) Coils [caption id="attachment_705" align="aligncenter" width="642"] Offset Coil System Image from Bedrooms & More, Seattle, Washington[/caption] Offset coils, also called Karr coils, were invented in the early 1900s by Frank Karr, who also started the Spring Air mattress company. They were developed from Bonnell coils, the original support for innerspring mattresses. Since the inception of offset coils, they have been used by many other mattress companies. The...

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