Patent Model of a Multicolor Rotary Printing Press
date: label: date made
content: ca 1868
label: patent date
content: 1868-03-10
name: label: maker
content: Dunk, A. A.
notes: label: Description (Brief)
content: This patent model demonstrates an invention for a multi-color rotary printing press which was granted patent number 75394. Five color plates were arranged around a cylinder, each with its own inking apparatus. The impression cylinder, of equal diameter, had five platen areas. Six sets of sheet grippers were mounted around a third rotating frame geared to the other two. But the gripper frame was one fifth larger in diameter than the two cylinders, so each sheet of paper was shifted one step for each revolution. The sheet would be printed at the first plate on the first revolution, at the second plate on the next revolution and so on. When the sheet had collected all the impressions, it was released, one fully printed sheet for every revolution of the press.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Graphic Arts
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content: Patent Models, Graphic Arts
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content: Work
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content: Communications
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content: Industry & Manufacturing
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content: Patent Models
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: GA.89797.075394
label: accession number
content: 089797
label: patent number
content: 075394
label: catalog number
content: GA*89797.075394
objectType: label: Object Name
content: press, rotary printing
label: Object Name
content: Machine, Engraving
label: Object Type
content: Patent Model
physicalDescription: label: Physical Description
content: metal (overall material)
label: Physical Description
content: wood (overall material)
label: Measurements
content: overall: 20.4 cm x 15 cm x 22.7 cm; 8 1/16 in x 5 7/8 in x 8 15/16 in