Trowbridge Steam Generator, Patent Model
date: label: date made
content: 1876
label: patent date
content: 1878-01-01
name: label: inventor
content: Trowbridge, William P.
notes: label: Description
content: This model was submitted to the U.S. Patent Office with the application for the patent issued to W. P. Trowbridge, of New Haven, Connecticut, January 1, 1878, no. 198863; Automatic Boiler & Engine Co., assignee.
label: Description
content: The model represents a small vertical coiled water-tube boiler provided with a stack or hopper in the center of the shell, which acts as a fuel reservoir to supply fresh fuel to the fire automatically.
label: Description
content: The boiler consists of a cylindrical shell the base of which forms the ashpit above which the grates are supported. The shell above the grates is built with increasing diameter upward to form the firebox, and immediately above this is contracted for a short distance and then continues in a cylinder of constant diameter. Around the firebox and fitting closely to the shell is a single coil of tubing, which is continued up through the cylindrical portion where alternate coils are staggered slightly. Projecting downward within the coils is a second cylindrical shell closed at the top by a removable cover. This shell is used as a fuel reservoir and feeding device and also forms an annular passage with the outer shell which requires the hot gases of combustion to pass over the coils. The automatic fuel supply device is not shown or described.
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: Connecticut
label: associated place
content: United States: Connecticut, New Haven
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
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: MC.308699
label: catalog number
content: 308699
label: accession number
content: 89797
label: patent number
content: 198,863
objectType: label: Object Name
content: water tube boiler
label: Object Name
content: boiler, steam, model
label: Object Name
content: patent model, generator, water-tube steam
label: Object Type
content: Patent Model
physicalDescription: label: Physical Description
content: brass (overall material)
label: Physical Description
content: wood (overall material)
label: Measurements
content: overall: 3 1/8 in x 10 in x 8 1/2 in; 7.9375 cm x 25.4 cm x 21.59 cm