Screw Propeller, Patent Model
{"id": "ld1-1643399486815-1643399503752-0", "version": "", "unitCode": "NMAH", "linkedId": "", "type": "edanmdm", "content": {"descriptiveNonRepeating": {"record_ID": "nmah_843803", "online_media": {"mediaCount": 1, "media": [{"thumbnail": "https://ids.si.edu/ids/deliveryService?id=SIA-2006-9732&max=150", "idsId": "SIA-2006-9732", "usage": {"access": "CC0"}, "guid": "http://n2t.net/ark:/65665/bq99ca746bc-10f5-704b-e053-15f76fa0b4fa", "type": "Images", "content": "https://ids.si.edu/ids/deliveryService?id=SIA-2006-9732", "resources": [{"width": 2848, "height": 4288, "label": "High-resolution JPEG", "url": "https://ids.si.edu/ids/download?id=SIA-2006-9732.jpg", "dimensions": "2848x4288"}, {"label": "Screen Image", "url": "https://ids.si.edu/ids/download?id=SIA-2006-9732_screen"}, {"label": "Thumbnail Image", "url": "https://ids.si.edu/ids/download?id=SIA-2006-9732_thumb"}]}]}, "unit_code": "NMAH", "title_sort": "SCREW PROPELLER, PATENT MODEL", "guid": "http://n2t.net/ark:/65665/ng49ca746a6-8a3f-704b-e053-15f76fa0b4fa", "title": {"label": "Title", "content": "Screw Propeller, Patent Model"}, "metadata_usage": {"access": "CC0"}, "data_source": "National Museum of American History"}, "indexedStructured": {"date": ["1870s"], "geoLocation": [{"Other": {"type": "Place", "content": "United States"}}, {"Other": {"type": "Place", "content": "Connecticut"}}, {"Other": {"type": "Place", "content": "New Haven"}}, {"points": {"point": {"latitude": {"type": "decimal", "content": "41.3"}, "longitude": {"type": "decimal", "content": "-72.9167"}}}}], "object_type": ["Patents", "patent model, propeller, screw", "Models", "screw propellor, patent model", "patent model, propeller, screw; patent model, screw propeller; propeller; Maritime"], "name": ["Harrington, Jackson"], "topic": ["Patents", "Transportation", "Models (representations)"], "place": ["New Haven", "United States", "Connecticut"], "online_media_type": ["Images"]}, "freetext": {"setName": [{"label": "See more items in", "content": "Work and Industry: Maritime"}, {"label": "See more items in", "content": "America on the Move"}, {"label": "See more items in", "content": "Transportation"}], "date": [{"label": "Date made", "content": "1875"}, {"label": "patent date", "content": "1875-04-13"}], "identifier": [{"label": "ID Number", "content": "TR.308561"}, {"label": "catalog number", "content": "308561"}, {"label": "accession number", "content": "89797"}, {"label": "patent number", "content": "162,063"}], "notes": [{"label": "Description", "content": "This patent model represents Jackson Harrington's 1875 design for a \"propeller-wheel,\" which improved upon a propeller he and a colleague invented in 1866."}, {"label": "Description", "content": "The Patent Office issued over 800 patents for paddle wheels, propellers, and other propulsion apparatus between 1790 and 1873. About 250 of these were propellers."}, {"label": "Description", "content": "Jackson Harrington and Francis Caffrey, then of New Haven, Connecticut, patented a six-bladed propeller design in 1866 that aimed to \"enlarge the driving-surface\" of the propeller \"by means of parallel blades with an aperture between them.\" Nine years later, Harrington, now living in the town of Groton Bank outside New London, patented an improvement to his and Caffrey's earlier design. The new propeller still had six blades, but instead of grouping them in pairs around a single hub, he specified that three go on a forward hub and three on a rear hub. This arrangement aimed to make the propeller easier and cheaper to manufacture. Harrington further refined the shape of the blades and their positions relative to each other, toward the end of reducing friction between propeller and water."}, {"label": "Description", "content": "Harrington, born in 1827, and Caffrey, born in 1828, were both machinists."}, {"label": "Location", "content": "Currently not on view"}], "name": [{"label": "patentee", "content": "Harrington, Jackson"}, {"label": "inventor", "content": "Harrington, Jackson"}], "topic": [{"label": "subject", "content": "Patent Models"}], "place": [{"label": "Associated Place", "content": "United States: Connecticut, New Haven"}], "physicalDescription": [{"label": "Physical Description", "content": "brass (overall material)"}, {"label": "Measurements", "content": "overall: 1 1/2 in x 3 in; 3.81 cm x 7.62 cm"}], "dataSource": [{"label": "Data Source", "content": "National Museum of American History"}], "objectType": [{"label": "Object Name", "content": "screw propellor, patent model"}, {"label": "Object Name", "content": "patent model, propeller, screw"}, {"label": "Object Type", "content": "Patent Model"}, {"label": "Other Terms", "content": "patent model, propeller, screw; patent model, screw propeller; propeller; Maritime"}]}}, "url": "edanmdm:nmah_843803", "hash": "7bb2cb57d562c50104fa12e075138266000317b0", "docSignature": "97c400debed8a55db4fc829bdec006fe", "timestamp": 1663782597, "lastTimeUpdated": 1653680878, "title": "Screw Propeller, Patent Model"}