Supports – Resilient support – Including load sustaining bearing or guide
Patent
1978-06-15
1980-03-04
Mitchell, James C.
Supports
Resilient support
Including load sustaining bearing or guide
248596, 297300, 297305, 297326, F16M 1300
Patent
active
041913558
ABSTRACT:
A rocker fixture for attachment to the bottom of a chair seat to provide a swivel and rocking action. The fixture comprises an upright post having its lower end received in swivel manner in the usual center socket carried by the legs of the chair. The upper end of the post is secured to a head bracket which has pivot connection with the legs of a channel, the latter being secured to a plate which is attached to the under-side of the chair seat. A bell crank lever is also pivotally connected between the legs of the channel and has one arm slidably engageable with an extension of the head bracket, and the other arm is acted upon by a spring-controlled member to urge said one arm to engagement with said bracket extension. The rocking action of the fixture works on a counter-balance principle so that weight shifting is required to tilt both to a backward position and forward from such position.
REFERENCES:
patent: 2420745 (1947-05-01), Harman
patent: 2463257 (1949-03-01), Fox
patent: 2528223 (1950-10-01), Fox
patent: 3672721 (1972-06-01), Williams
Mitchell James C.
Williams Michael
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