{"product_id":"unique-c-1930-s-vintage-industrial-functional-steam-locomotive-instructional-model","title":"unique c. 1930's vintage industrial functional steam locomotive instructional model","description":"very unique and highly collectible c. 1930's steam engine model manufactured by the w.m. welch scientific co., chicago, il. comprised largely of cast iron with original black enameled finish. the linkages are made of yellow brass with nickel-plated finish. similar models were made around 1936 by the chicago apparatus company. the fully functional steam engine features a cross-section through the steam chest, exposing the workings of the piston, sliding gear, slide valve, etc. the opposite side shows the stephenson valve or reverse gear.","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":50669161414954,"sku":"UR-9504-11","price":595.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0959\/7075\/4858\/files\/20110307-20110307-img_5344n_2.jpg?v=1759980940","url":"https:\/\/urbanremainschicago.com\/products\/unique-c-1930-s-vintage-industrial-functional-steam-locomotive-instructional-model","provider":"Urban Remains Chicago","version":"1.0","type":"link"}