Electro-plating machine
date: label: date made
content: ca 1890
notes: label: Description (Brief)
content: The dynamo was donated thru Ohio Edison Company "as a service to one of our customers." They reported the donation came from Hess-Snyder Company, H. Charles Hess. "The Hess-Snyder Company was established in Massillon, Ohio in 1874 and liquidated in 1968. Among other items, it was engaged in the manufacture of Boomer ranges, heating stoves and cast iron furnaces until the late 1950's. The plating dynamo was apparently used in the plating department associated with this stove manufacturing."
label: Description (Brief)
content: Additional details: "Belt Driven. The dc generator is shunt connected, thus giving it nearly steady output voltage as load is applied. The wooden base measures 13 x 22 inches. The top wooden plate which anchors the shunt field resistance (spring type) and the generator output terminals measures 13.5 x 9 inches. The two vertical coils which are connected in series provide the necessary flux. Each core and coil assembly is approximately 2.25 inches wide, 7 inches long and 6 inches high. The flux path between the top of each coil is through a solid plate of iron located just below the top wooden plate and measures approximately 10 x 6 x 1 inches. The flux path between the bottom of each coil is through the iron which surrounds the armature and through the air gap.
label: Description (Brief)
content: "The two pole armature is 6 inches long and approximately 3 inches in diameter. On one end of the 20 inch armature shaft is a pulley 4 inches in diameter and approximately 4 inches wide. On the other end of the shaft is the commutator which is 2 inches in diameter. The brushes are spring bronze straps and extend one to two inches out of their holders. The field coil wire is estimated to be No. 4 insulated copper wire, whereas the armature wire is estimated to be No. 2 copper insulated wire. The only identification markings on the generator is the number 553 stamped into the top wooden plate, and "Patent Pending 1888" engraved on the brass grease cups."
label: Description (Brief)
content: Staff at the time reported: "The generator is practically identical to the "Little Wonder" Dynamo-Electric Machine marketed by the Hanson, Van Winkle Co. of Newark, New Jersey in 1889. An advertisement appears in the 14 December 1889 issue of Electrical World. The machine was apparently designed for electroplating applications."
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from H. Charles Hess
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.329995
label: catalog number
content: 329995
label: accession number
content: 284769
objectType: label: Object Name
content: electrical generator
label: Object Name
content: dynamo
label: Other Terms
content: Generator; Motors and Generators
physicalDescription: label: Measurements
content: overall: 15 1/2 in x 21 1/2 in x 22 in; 39.37 cm x 54.61 cm x 55.88 cm