Tilting mechanism for a chair

Details Tilting mechanism for a chair Tilting mechanism for a chair

A - Human Necessities

47

C

155/34

A47C 1/022 (2006.01) A47C 1/026 (2006.01)

Patent

CA 1250217

ABSTRACT A tilting mechanism for a chair of the typists type comprises a channel shaped first part for attachment to the underside of the chair seat. A backrest carrying second part and a pivot block to be carried on a base of the chair are each pivotally connected to the first part by respective horizontal pivots . The second and third parts are connected by respective links to quadrants having recesses in their upper edges for engagement with respective pins of links . The links are releasable from the quadrants by a lever pivotally mounted between the side flanges of the first part. The lever carries a cam having shaped portions to engage the links with different ones of the shaped portions engaging the links depending on the rotational position of the lever, whereby both links or only a selected one thereof are dis-engaged. By this means the angle of tilt of both the chair seat and the backrest can be adjusted together or independently as required.

460617

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