Ericsson Hot-Air Engine, Patent Model
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Within each cylinder is a hollow equilibrium piston, both connected by a long piston of relatively small diameter, called the working piston, which passes through airtight stuffing boxes in the heads of the equilibrium cylinders. The cylinders are connected to a heater and to a water-cooled chamber, through suitable valves and passages, so that both ends of one equilibrium cylinder are simultaneously in communication with the cooler. The pressure being higher in the heater than in the cooler, the effect is to force the working piston out of the cylinder in communication with the heater into the other. The equilibrium pistons move with the work piston and circulate the air in the cylinders to the heater or cooler and back to the respective cylinders, maintaining a constant pressure in each cylinder throughout the stroke. When the piston has completed its stroke the valves are reversed and a continuous motion is produced. This engine includes the regenerator or \u00e2\u0080\u009cheat deposit vessel,\u00e2\u0080\u009d which was a feature of most of Ericsson\u00e2\u0080\u0099s engines. In this construction it is a vessel filled with disks of wire cloth, which are heated by the hot air passing from the cylinders to the cooler and, in turn, give up this heat to the air passing from the cooler to the heater."}, {"label": "Description", "content": "Reference:"}, {"label": "Description", "content": "This description comes from the 1939 Catalog of the Mechanical Collections of the Division of Engineering United States Museum Bulletin 173 by Frank A. Taylor."}, {"label": "Location", "content": "Currently not on view"}], "name": [{"label": "inventor", "content": "Ericsson, John"}], "publisher": [{"label": "Related Publication", "content": "Frank A. Taylor. Catalog of the Mechanical Collections of the Division of Engineering United States National Museum, Bulletin 173"}], "topic": [{"label": "subject", "content": "Patent Models"}, {"label": "subject", "content": "Engine"}], "place": [{"label": "place made", "content": "United States: New York"}, {"label": "associated place", "content": "United States: New York, New York City"}], "physicalDescription": [{"label": "Measurements", "content": "overall: 7 3/4 in x 10 3/4 in x 6 in; 19.685 cm x 27.305 cm x 15.24 cm"}], "dataSource": [{"label": "Data Source", "content": "National Museum of American History"}], "objectType": [{"label": "Object Name", "content": "engine, hot air, model"}, {"label": "Object Name", "content": "patent model, engine, hot air"}, {"label": "Object Type", "content": "Patent Model"}]}}, "url": "edanmdm:nmah_1063778", "hash": "cc2f726fc8bc04f135d87b2ee0bd4cdefdc200e4", "docSignature": "8d2b1d301ba066bf5491748211f1b87e", "timestamp": 1663781938, "lastTimeUpdated": 1655973429, "title": "Ericsson Hot-Air Engine, Patent Model"}