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Class 400/165 - Simultaneous rotation and translation of type-head by manually powered actuation (e.g., helical shift)


Subclass of Class 400 - Typewriting machines
Definition: Subject matter wherein said selecting mechanism moves a
No. of patents: 2
Last issue date: 10/27/1981


NumberTitleIssue Date
4297042Helical print head mechanism
An impact printer head mechanism for printing on a print medium has a cylindrical print head with its axis perpendicular to the print line and a matrix of characters on its exterior surface in the form of a multi-turn helical row. A rotatably fixed screw ... 		10/27/1981
3991873Attaching print disc to drive in impact printers
A print disc and guide are configured so that the print disc can be mounted on a driving shaft transversely to the shaft axis. Removal and replacement of the print disc are thereby facilitated.... 		11/16/1976
 
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