Railway frog
date: label: date made
content: ca 1879
label: date made
content: ca. 1879
label: patent date
content: 1879-07-15
name: label: inventor
content: Jackson, Caleb H.
notes: label: Location
content: Currently not on view
place: label: associated place
content: United States: Pennsylvania, Harrisburg
setName: label: See more items in
content: Work and Industry: Transportation, Railroad
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: TR.309233
label: catalog number
content: 309233
label: patent number
content: 217,536
label: accession number
content: 89797
objectType: label: Object Name
content: patent model, railway frog
label: Other Terms
content: rail switch; patent model, railway frog; Rail; Rail
physicalDescription: label: Physical Description
content: wood (overall material)
label: Measurements
content: overall: 12 in x 7 in; 30.48 cm x 17.78 cm