<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
mads.xsd"><authority><topic authority="http://AATesaurus.cultura.gencat.cat/aat/getty_en">centripetal spring chairs</topic></authority><related type="broader"><topic>reclining chairs</topic></related><related type="broader"><topic>patent furniture</topic></related><variant type="other"><topic>centripetal spring chair</topic></variant><variant type="other"><topic>chairs, centripetal spring</topic></variant><variant type="other"><topic>spring chairs, centripetal</topic></variant> <note xml:lang="en"><![CDATA[ Reclining chairs with a spring concealed under the seat which allows the chairs to recline and then snap into place; attributed to the American Chair Company, Troy, NY, about 1850. ]]></note></mads>