Patent Model for a Vacuum Cylinder Sheet-Feed Apparatus

Description (Brief)
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.
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.
Currently not on view
Object Name
patent model
date made
ca 1858
patent date
Bullock, William
Physical Description
metal (overall material)
wood (overall material)
overall: 32 cm x 28.5 cm x 37 cm; 12 5/8 in x 11 1/4 in x 14 9/16 in
ID Number
accession number
patent number
catalog number
Industry & Manufacturing
Patent Models, Graphic Arts
Patent Models
See more items in
Culture and the Arts: Graphic Arts
Patent Models
Patent Models, Graphic Arts
Data Source
National Museum of American History, Kenneth E. Behring Center

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