Hansen Writing Ball Patent Model


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.

Date Made: 1872-04-231872Patent Date: 1872-04-23

Maker: Hansen, Hans R. M. J.Inventor: Hansen, Hans R. M. J.

Location: Currently not on view

Associated Place: Denmark: Hovedstaden, Copenhagen

See more items in: Work and Industry: Mechanisms, Typewriters, Computers & Business Machines


Exhibition Location:

Data Source: National Museum of American History

Id Number: ME.308874Catalog Number: 308874Patent Number: 125,952Accession Number: 89797Patent Number: 125,952

Object Name: patent model, typewriterObject Type: Patent ModelOther Terms: typewriter; patent model, typewriter; Manual

Physical Description: mahogany (overall material)Measurements: overall: 5 in x 12 1/2 in x 10 in; 12.7 cm x 31.75 cm x 25.4 cm

Guid: http://n2t.net/ark:/65665/ng49ca746a6-93b6-704b-e053-15f76fa0b4fa

Record Id: nmah_850025

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