Error correcting typewriter
AssigneeTriumph Werke Nurnberg A.G.
InventorsJurgen Skrzipek, Helge Reuter
Life of this patent
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Abstract
An error correction system for a typewriter in which a silent type action with a blank type face is operatively connected and synchronized to initiate a backspace action and elevate and feed an error correction ribbon in advance of the striking of the blank type face against the space wherein an error was printed. Thus, to obliterate an error and type in a correct character, an operator need only perform two operations; depress the error key and the correct character key. Further, in accordance with the invention, the error key may be further depressed to a repeat position whereby a series of characters may be obliterated automatically.
Claims5
An error correcting typewriter having an error correction ribbon,
- means for elevating said error correction ribbon opposite the printing point of a typewriter,
- means for feeding said error correction ribbon to present a fresh area for elevation opposite said printing point,
- a carriage,
- means for initiating a backspace action for backspacing said carriage,
- a silent type action having a blank type face,
- an error correction keylever depressible to a first limit position for initiating operation of said silent type action, and
- means responsive to depression of said error correction keylever to said first limit position for operating, in advance of the printing of said blank type face, in sequence, said backspace action, said error correction ribbon elevating means, and said error correction ribbon feeding means, whereby a previously typed character can be erased and a correct character typed in the same character space.
Dependencies are inferred from the claim text.