Greene-Wheelock Valve and Valve Seat Model
notes: label: Description
content: This model represents a skeletonized taper plug in which are formed two gridiron valve seats and a bonnet that carried a rockarm collar and cams for actuating one steam and one exhaust valve on the valve seats. The valves are long narrow gridiron valves, which reciprocate in the direction parallel to the axis of the plug. They are actuated by rods and slides and roller cams, which are rock shaft on the collar. The steam valve slide has a disengaging pawl to provide an adjustable cut-off.
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
place: label: place made
content: United States: Massachusetts
setName: label: See more items in
content: Work and Industry: Mechanical and Civil Engineering
label: See more items in
content: Bulletin 173
label: See more items in
content: Engineering, Building, and Architecture
label: See more items in
content: Work
label: See more items in
content: Industry & Manufacturing
publisher: label: Related Publication
content: Frank A. Taylor. Catalog of the Mechanical Collections of the Division of Engineering United States National Museum, Bulletin 173
creditLine: label: Credit Line
content: Gift of Franklin Machine Company, Providence, R. I.
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: MC.310250
label: catalog number
content: 310250
label: accession number
content: 108073
objectType: label: Object Name
content: valve mechanism
physicalDescription: label: Physical Description
content: nickel plated (overall material)
label: Measurements
content: overall-from catalog card: 3 5/8 in x 5 1/2 in x 1 1/8 in; 9.2075 cm x 13.97 cm x 2.8575 cm
label: Measurements
content: overall: 3 5/8 in x 5 1/2 in x 1 1/8 in; 9.2075 cm x 13.97 cm x 2.8575 cm