{"product_id":"mid-19th-century-a-c-brownell-patent-model-copper-boiler","title":"Mid-19th Century A. C. Brownell Patent Model Copper Boiler","description":"\u003cp\u003ec. 1863; A. C. Brownell - Brooklyn, New York\u003cbr\u003e\n\u003cbr\u003e\nOriginal United States Patent Office model for A. C. Brownell's patented improvement in copper boilers, covered under U.S. Patent No. 39,881, issued September 15, 1863. Constructed as a hand-fabricated copper vessel with four projecting brass pipe fittings, the model demonstrates Brownell's improved water heater design, which emphasized brazed construction in place of soft solder to produce stronger, more durable, and watertight copper boilers. The model retains its original copper body and brass fittings, accompanied by period patent documentation mounted within a protective plastic sleeve, including a handwritten green cardstock identification tag, a printed provenance tag from the O. Rundle Gilbert Collection of Original United States Patent Models (1790-1890), and original linen patent documents. The documents appear to comprise multiple pages, though they are now adhered together. The original fabric cord used to secure the documentation to the model also remains present.\u003cbr\u003e\n\u003cbr\u003e\nCopper exhibits light oxidation concentrated along the brazed seam lines at the top and bottom, with four projecting brass pipe fittings displaying an even darkened patina consistent with age. The first fitting (top) and third fitting (one of the lower fittings) can be easily removed, with their retaining nuts turning freely by hand. The second fitting rotates while its retaining nut remains tight, and the fourth fitting remains fixed with neither the pipe nor nut moving. The copper body is structurally intact, displaying one prominent dent along with numerous smaller dents and minor handling marks throughout. The accompanying documents remain housed in a protective plastic sleeve. The green cardstock identification tag is creased but retains legible handwritten cursive information, while the yellow provenance card is creased but otherwise blank aside from its printed text. The linen patent documents remain adhered together and should be handled with care. The original fabric attachment cord is present but exhibits damage consistent with age.\u003cbr\u003e\n\u003cbr\u003e\nBoiler: 6.5\" L x 5.5\" W x 13.25\" H\u003cbr\u003e\nDocuments: 3.5\" L x 3.5\" H\u003cbr\u003e\n\u003cbr\u003e\nMM - 21921 - 073126\u003c\/p\u003e\n\n\u003cp\u003eFor information regarding shipping, please visit our Terms \u0026amp; Conditions page \u003ca class=\"GeneratedLink\" href=\"https:\/\/industrialartifacts.net\/pages\/shipping\" target=\"_blank\"\u003ehere\u003c\/a\u003e.\u003c\/p\u003e\n","brand":"Industrial Artifacts","offers":[{"title":"Default Title","offer_id":45168632004651,"sku":"21921","price":1250.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0194\/8170\/files\/6bb6865c-8d47-5e12-b354-a8ba6ce80336.jpg?v=1787783878","url":"https:\/\/industrialartifacts.net\/products\/mid-19th-century-a-c-brownell-patent-model-copper-boiler","provider":"Industrial Artifacts","version":"1.0","type":"link"}