Patent model for printers' quoins

Patent model for printers' quoins

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Description (Brief)
This patent model demonstrates an invention for mechanical quoins, which expanded by means of paired screw gears; the invention was granted patent number 93603.
Location
Currently not on view
Object Name
manufacture, printers quoins
Object Type
Patent Model
date made
ca 1869
patent date
1869-08-10
maker
Dorrity, Daniel
Physical Description
metal (overall material)
Measurements
overall: 10 cm x 16.7 cm x 10.5 cm; 3 15/16 in x 6 9/16 in x 4 1/8 in
ID Number
GA.89797.093603
accession number
089797
patent number
093603
catalog number
GA*87979.093603
See more items in
Work and Industry: Graphic Arts
Patent Models, Graphic Arts
Work
Communications
Industry & Manufacturing
Patent Models
Data Source
National Museum of American History
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