Hansen Writing Ball Patent Model
date: label: date made
content: 1872-04-23
label: date made
content: 1872
label: patent date
content: 1872-04-23
name: label: maker
content: Hansen, Hans R. M. J.
label: inventor
content: Hansen, Hans R. M. J.
notes: label: Description
content: This typewriter patent model accompanied the patent application of Hans R. Malling J. Hansen of Copenhagen, Denmark in his patent application that received patent number 125,952 on April 23, 1872. The model only shows a portion of the machine, with three letters in the “type-ball.” This patent was one of the earlier designs of Hansen’s unique writing ball typewriter. In his patent Hansen claimed the combination of converging types arranged circularly that met at the same point. Hansen also claimed the use of a spring or electro-magnet as a means of paper carriage movement. The electromagnet in the typewriter operated by closing the circuit on each descent of the type before it makes it impression on the paper. Closing the circuit causes an attraction of the armature of the magnet, moving the drum before the type hits. After the drum moved a full line, the mechanism would move it down a line.
label: Location
content: Currently not on view
place: label: associated place
content: Denmark: Hovedstaden, Copenhagen
setName: label: See more items in
content: Work and Industry: Mechanisms
label: See more items in
content: Typewriters
label: See more items in
content: Computers & Business Machines
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: ME.308874
label: catalog number
content: 308874
label: patent number
content: 125,952
label: accession number
content: 89797
label: patent number
content: 125,952
objectType: label: Object Name
content: patent model, typewriter
label: Object Type
content: Patent Model
label: Other Terms
content: typewriter; patent model, typewriter; Manual
physicalDescription: label: Physical Description
content: mahogany (overall material)
label: Measurements
content: overall: 5 in x 12 1/2 in x 10 in; 12.7 cm x 31.75 cm x 25.4 cm