Apparatus for performing deleting operations while backspacing in a composing machine
AssigneeR & I Patent Corporation
InventorsWilliam S. Gubelmann, deceased, by Walter S. Gubelmann, executor, William R. Grier
Life of this patent
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Abstract
A desk top justifying text writing composing machine including automatic encoding and reading control means for operating a desk top justifying reproducing machine, or for operating larger and more sophisticated printing machines capable of automatic justification. The machine will produce unjustified typed lines and will automatically encode for controlling another machine to print justified lines, as a result of a single series of manual keyboard composing operations and automatic code controlled reproducing operations for producing a justified copy of a literal text, respectively.
Claims20
An apparatus for performing deleting operations in a composing machine for correcting composing errors made during text character and print condition composing operations, comprising forward composing means including character and function keys, text display means responsive to said character and function keys for displaying text characters in conditions according to said function keys, a record means, encoding means responsive to said character and function keys for sequentially encoding different information bits on said record means in forward encoding sequences, said information bits representing text character information and print condition information, normally ineffective delete reading means located one code space extend beyond said encoding means for sensing the last effective bit of encoded information on the record means, delete key means operable for rendering said delete reading means effective, and backspace decoding means controlled by said delete reading means for sequentially reversing said composing operations and deleting text character information and print condition information from said record means by direct reading of the encoded text and function information from said record means on a last-in first-out basis, said backspace decoding means placing said apparatus in the text character print condition existing just prior to encoding of the last deleted character.
An apparatus for performing deleting operations in a composing machine for correcting composing errors made during a composing operation, comprising forward composing means including character and function keys, a carriage in said composing machine, means for advancing said carriage in steps of different length in response to the operation of said character and function keys, a record medium, encoding means responsive to said character and function keys for sequentially encoding different information bits on said record medium in one or more forward encoding sequences, delete key means operable from nornmal to operated position, delete reading means arranged for sensing said record medium, means for operatively connecting said delete reading means to said delete key means in its operated position for sensing information bits from said record medium in response to the actuation of said delete key means, reversing means responsive to said delete reading means for reversing said composing operation in one or more reverse sequences corresponding to said different information bits in a last-in first-out fashion, said reversing means comprising means for spacing said carriage in a reverse direction in response to said encoded information bits to be deleted, whereby the reverse carriage steps correspond to said last-in first-out fashion so that, at the end of a deleting sequence, the carriage is in the position in which said carriage it was prior to the encoding of the last deleted information bit, said reversing means further comprising backspace decoder means responsive to said delete reading means, and means operatively connecting the backspace decoder means to said reversing means for differential backspacing of said carriage in accordance with the respective character and space code sensed by said delete reading means, and
- differential stop means, solenoid means for selectively rendering effective and stop means to control the extent of carriage movement, and means for controlling the operation of the solenoid means in response to the backspace decoder means.
An apparatus for performing deleting operations in a composing machine for correcting composing errors made during a composing operation, comprising forward composing means including character and function keys, a record medium, encoding means responsive to said character and function keys for sequentially encoding different information bits on said record medium in one or more forward encoding sequences, delete key means operable from normal to operated position, delete reading means arranged for sensing said record medium, said delete reading means comprising a backspace reader, a backspace decoder connected to the backspace reader, first means responsive to the backspace decoder for shifting the composing machine to an upper case condition if a lower case code is decoded by said backspace decoder, and second means also responsive to the backspace decoder for shifting the composing machine to a lower case condition if an upper case code is decoded by said backspace decoder, means for operatively connecting said delete reading means to said delete key means in its operated position for sensing information bits from said record medium in response to the actuation of said delete key means, and reversing means responsive to said delete reading means for reversing said composing operation in one or more reverse sequences corresponding to said different information bits in a last-in first-out fashion.
An apparatus for performing deleting operations in a composing machine for correcting composing errors made during composing operations, comprising a counting mechanism, forward composing means including character and function keys, said keys including a word space bar and electric means for energizing said counting mechanism in response to the actuation of the word space bar, a record medium, encoding means responsive to said character and function keys for sequentially encoding different information bits on said record medium in forward encoding sequences, normally ineffective delete reading means located one code space beyond said encoding means for sensing the last effective bit of encoded information on the record medium, delete key means operable for rendering said delete reading means effective, and backspacing decoding means responsive to said delete reading means for reversing said composing operations in reverse sequences corresponding to said different information bits in a last-in first-out fashion, said counting mechanism comprising (i) count accumulating means movable step wise between a count starting position and a count stop position said count accumulating means comprising first ratchet wheel means, (ii) cocking means operatively connected to said keys and to said count accumulating means for preparing said count accumulating means for a counting step in response to the actuation of the respective keys, said cocking means including solenoid means for cocking the first ratchet wheel means, and (iii) drive means operatively connected to said count accumulating means for step wise advancing the count accumulating means in response to the release of the respective keys, said drive means including resilient means operatively connected to the first ratchet wheel means whereby the first ratchet wheel means is cocked each time the solenoid means is energized and said first ratchet wheel means is stepped each time the solenoid means is de-energized.
Dependencies are inferred from the claim text.