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Other levers allowed the chair to rotate ("through the whole circle") and rock back and forth. In addition, minor movements were possible, such as the raising or lowering of the back and headrest, slight rocking of the seat ("to prevent the patient form sliding forward"), footstool length and height adjustment, and the small of the back support ...
A dental engine is a large chair-side appliance (often including the dental chair itself) for use in a dentist's office. American dentist Josiah Flagg created the first adjustable dental chair in the late 18th century, adapting a wooden chair by adding an instrument tray on one side, as well as a movable headrest.
U.S. Patent No 8771 drawing image Patent 8771 image close-up of parts Shaker ladder chair with ball swivels on rear legs for tilting. The Shaker tilting chair – named for its ball bearing or ball and socket [A] button mechanism assembled to the back two legs of a wooden chair – allowed a person to lean back in the chair without slipping or scraping the floor.
It has X-shaped sides and a sling seat and back made of leather, cane or wood slats. Similar to a planter's chair, but without the extended arms. Cantilever chair, has no back legs; for support its seat and back cantilever off the top of the front legs (see: Cesca chair) B55 Cantilever chair by Marcel Breuer
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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.
Consumer price increases accelerated last month, the latest sign that inflation's steady decline over the past two years has stalled in recent months. According to the Federal Reserve's preferred ...
NEW YORK (Reuters) -Robert F. Kennedy Jr, the former independent presidential candidate, is reviewing candidate resumes for the top jobs at the U.S. government's health agencies in Donald Trump's ...