Patent Model for a Vacuum Cylinder Sheet-Feed Apparatus
date: label: date made
content: ca 1858
label: patent date
content: 1858-09-21
name: label: patentee
content: Bullock, William
notes: label: Description (Brief)
content: This patent model demonstrates an invention for a sheet-feed apparatus which was granted patent number 21591. The patent details a sheet-feeding apparatus, operating independent of the printing machine, with improved registration.
label: Description (Brief)
content: William Bullock (1813-1867) made himself a name in 1852 with a hand-cranked wooden press to which a self-feeder was attached. He followed this with other fast presses, focusing on the problems of feeding. This led him to his most famous press, the web perfecting press (Patent 38200). In 1867 Bullock was caught in a press he was installing for the Philadelphia Public Ledger, and died from the injuries.
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.89797.021591
label: accession number
content: 089797
label: patent number
content: 021591
label: catalog number
content: GA*89797.021591
objectType: label: Object Name
content: patent model
label: Object Name
content: Feeder, Paper
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: 32 cm x 28.5 cm x 37 cm; 12 5/8 in x 11 1/4 in x 14 9/16 in