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An office chair, or desk chair, is a type of chair that is designed for use at a desk in an office. It is usually a swivel chair , with a set of wheels for mobility and adjustable height. Modern office chairs typically use a single, distinctive load bearing leg (often called a gas lift ), which is positioned underneath the chair seat.
The Centripetal Spring Chair or Armchair was a 19th-century American office chair, and one of the first modern designs for office chairs. [1] Designed in 1849 by the American inventor Thomas E. Warren (b. 1808), the chair was produced by the American Chair Company in Troy, New York. Made of cast iron and varnished steel with wood and velvet ...
This type is common in modern offices and are often also referred to as office chairs. Office swivel chairs, like computer chairs, usually incorporate a gas lift to adjust the height of the seat, but not usually large (e.g. recliner) swiveling armchairs. A draughtsman's chair is a swivel chair without wheels that is usually taller than an ...
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1776 Swivel chair. A swivel or revolving chair is a chair with a single central leg that allows the seat to spin around. Swivel chairs can have wheels on the base allowing the user to glide the chair around their work area without getting up. This type of chair is common in modern offices and is often also referred to as an office chair.
The earliest rail chairs, made of cast iron and introduced around 1800, were used to fix and support cast-iron rails at their ends; [2] they were also used to join adjacent rails. [ 35 ] In the 1830s rolled T-shaped (or single-flanged T parallel rail ) and I-shaped (or double-flanged T parallel or bullhead ) rails were introduced; both required ...