<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31419385</termId><termName>walking beam engines</termName><termType>PT</termType><termNote><![CDATA[ Steam engines, common in the 19th century, in which a beam is pivoted in the center above a veritical cylinder, transmitting motion to the piston down to a crank shaft by a long connecting rod. ]]></termNote><termCreatedDate>2026-03-30 20:52:58</termCreatedDate><relation><relationType>UF</relationType><termId>31419386</termId><termName>beam engine</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31419387</termId><termName>beam engine, walking</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31419388</termId><termName>beam engines</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31419389</termId><termName>beam engines, walking</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31419390</termId><termName>beam, walking</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31419391</termId><termName>beam, working</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31419392</termId><termName>beams, walking</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31419393</termId><termName>beams, working</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31419394</termId><termName>engine, beam</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31419395</termId><termName>engine, walking beam</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31419396</termId><termName>engines, walking beam</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31419397</termId><termName>walking beam</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31419398</termId><termName>walking beam engine</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31419399</termId><termName>walking beams</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31419400</termId><termName>working beam</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31419401</termId><termName>working beams</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31384652</termId><termName>steam engines</termName><termType>PT</termType></relation></term>  </Zthes>