engine, wind
name: label: maker
content: Sparks, Lorenzo H.
notes: label: Description (Brief)
content: This model was submitted with the application for the patent issued to L. H. Sparks, August 30, 1881, no. 246247. The mill has the solid type of wind wheel (in which the slats are rigidly fixed), a rudder vane for holding the wind wheel in the direction of the wind, and a governor for maintaining a uniform speed of the mill in varying winds. The governor consists of a safety vane normal to the direction of the wind and located just behind the wind wheel, which tends to throw the wheel out of the wind as the wind pressure increases, and a weighted lever so connected to the hinged rudder vane and the wheel bracket that it opposes the action of the safety vane. The resulting action of the governor is to turn the wheel away from the direct force of the wind as the wind velocity increases and to turn it back as the wind decreases.
setName: label: See more items in
content: Work and Industry: Agriculture and Natural Resources
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: AG.309687
label: catalog number
content: 309687
label: accession number
content: 89797
objectType: label: Object Name
content: Engine, Wind