"Flight by machines heavier than air is unpractical and insignificant, if not utterly impossible."
|6755125||High speed marker|
A marking device (10) comprises a frame (1) (of frame plates (12,14)) to which are fixed first and second motors (16,18). A carriage frame (40) is pivoted in the frame about a screw axis (22). A marking head (30) is m...
|4828410||Serial print wheel impact printer|
Disclosed is an improved serial impact printer which both prints and serrates a document. The printer includes a print wheel which is rotated to position a selected character in front of an anvil. The print wheel includes a wheel-like circular member havi...
|4146337||Electric typewriter for multiple languages|
An electric typewriter for printing indicia includes indicia-selecting and typerwriting mechanisms. Keys are associated with the indicia through a mechanical matrix which controls the positioning of a ball containing the indicia....