FR2462269A1 - MEMORY WRITING MACHINE - Google Patents

Abstract

THE INVENTION IS RELATIVE TO A WRITING MACHINE INCLUDING A LINE 12 MEMORY CAPABLE OF RECORDING CHARACTER STRIKE ORDERS GIVEN ON THE KEYBOARD AND CORRESPONDING TO A WRITING LINE, AND READING MEANS 13 OF THE CONTENTS OF THE MEMORY 12 COMMANDING THE PRINTING OF STORED CHARACTERS. THE MACHINE IS CHARACTERIZED IN THAT IT INCLUDES AN INDEX WHICH CAN BE CONSTITUTED BY THE CARRIAGE 1 AND WHICH MOVES ALONG THE STRIKE CYLINDER 3, AND THE CONTROL MEANS 19 OF THE MOVEMENTS OF THIS INDEX 1 ASSOCIATED WITH THE LINE MEMORY 12 TO BE MADE ACTIVE WHEN STORING 12 EACH STRIKE ORDER. THIS MACHINE ALLOWS A USER TO LOCATE, THANKS TO INDEX 1, THE POSITION THAT EACH OF THE CHARACTERS THAT IT ENTERS IN MEMORY 12 WILL OCCUPY ON THE SHEET.

Description

TYPEWRITER

  The present invention relates to a typewriter

  taking a support of a printing device and a cylinder

  can be moved relative to each other under the action of a drive motor, a keyboard, a line memory likely to record typing orders given on the keyboard and corresponding to a line of writing, and means for reading the content

  line memory intended to control the printing of

  characters whose typing orders are recorded by the

line memory.

  In known typewriters including a

  mobile riot likely to move along the striking cylinder, the carriage remains fixed in a position, generally at the left margin, when storing a line

  of text in line memory. A key on the keyboard

  order to read the contents of the memory and the

  pressure of this content. The carriage then moves from left to right, ensuring the printing of the line

stored text.

  A user of known typewriters of this type has great difficulty in representing to himself the position that the character he introduces into memory will occupy on the writing sheet after its printing. Some memory machines

  line are equipped with a display device. This provision

  This display usually only displays the last fifteen characters entered in the memory and allows you to control the stored text, but it does not usually give any correspondence of the position of the characters between

  writing sheet and the characters displayed. In some

  In machines, the display gives a number indicating the name

  number of characters stored since the beginning of the

  registration of the line. When the escape step is proportional to the width of the characters, this figure provides no indication of the print position of the characters. -2-

  The object of the invention is to provide a machine for

  write line memory allowing a user to represent the positions that the characters he introduces

  in memory will occupy on the writing sheet.

  The typewriter subject of the invention is

  characterized in that it comprises an index arranged in re-

  the striking cylinder and the means for controlling the

  relative placements between this index and the cylinder of

  eg, these means being associated with the line memory, so that

  to be made active when saving each character typing order and ordering a move

  between the index and the cylinder, in the sense of writing

  re, and of a value equal to the spacing step corresponding

  the character whose typing order is recorded.

  The attached drawing represents, schematically and by way of

  example, an embodiment of the machine object of

invention.

  Figure 1 is a perspective view.

  Figure 2 is a block diagram illustrating the elements

  this machine and their interaction.

  Figure 3 is a symbolic representation of the

line.

  With reference to FIG. 1, the typewriter comprises a carriage 1 carrying a writing head 2 and capable of moving along a striking cylinder 3. A sight 4 is placed above the keyboard 5 LED 4 contains

  a display of a portion of the write line.

  As illustrated in FIG. 2, this machine comprises a read-only memory of the characters 6 associating with each key

  keyboard 5 the information needed to hit the keyboard.

  corresponding character. This information is particularly

  benchmarks for the establishment of the character carried by the head of

  2, the striking force necessary to ensure the

  pressure of this character and the width of the exhaust

  corresponding to this character for a machine with no escape

proportional

  A selection device 7, a striking member B and

  a driving motor 9 of the carriage 1 are connected by means of

  in the memory of characters 6 and are intended

  to ensure respectively the establishment of the com-

  The position indicator 10 transmits at all times the position of the carriage 1 to a logic control circuit of the transmission.

machine, not shown.

  A switch 11 is provided between the memory of characters

  6 and the selector 7. This switch 11 is

  placed on the left of the keyboard 5 and allows a user to

  to choose the operating mode of the machine.

  be the usual mode of operation and a mode of operation

  memorization. In the usual mode of operation of a typewriter, the typing of a character is consecutive to its command on the keyboard 5, the command

  the next character being made after this hit.

  The switch 11 makes it possible to change the operating mode

  by deflecting character typing commands

  given to the keyboard 5 on a line memory 12.

  A write pointer 13, visible in FIG. 3, and an exhaust accumulator 14 are connected in parallel with the line memory 12. When operating in

  memory, the line memory 12 stores each

  character strikes and the characteristics of

  corresponding pe, the write pointer 13 designating the box of the memory in which this typing command is

  recorded. The exhaust counter 14 adds to its range.

  the magnitude of the exhaust pitch corresponding to the

  whose typing order is recorded. The memory of

  gne is connected in known manner to a display device visible in the indicator light 4. The display device 15

  allows you to display, for example, the last fifteen characters

  whose striking orders have been recorded by the

  moire and constitutes for the user a means of control

memorized text.

  The exhaust totalizer 14 is connected to a cir-

  cooked test 16 commander including a key lock

  18 when the recorded text exceeds the margin of

  17. This test circuit 16 also controls an audible warning signaling to the user that he is at

near the right margin.

  A comparison circuit 19 is connected between the total

  Exhaust generator 14 and the position indicator 10 of the truck 1. If the quantities contained in the exhaust totalizer 14 and the position indicator 10 of the truck 1

  are different, the comparison circuit 19 acts on the

  1 of the carriage drive motor 9 for

  to evoke a displacement of the latter rendering equal the two quantities considered. At each introduction in memory of a

  typing command of a character, the carriage 1 is thus de-

  placed a distance equal to the magnitude of the escape

  corresponding to this character. That is to say that the chain

  riot still occupies b position he would have if the machine

  operated in the usual mode of operation, indi-

  so as to the user the place that the character he

  will introduce into memory will occupy on the writing sheet.

  A read pointer 20, visible in FIG. 3, is connected to the line memory 12 and indicates the first box

busy with this memory.

  A print control key 21 disposed proximate

  keyboard 5, allows you to control the playback of

  of the line memory 12 and the inversion of the switch 11.

  This key is usually constituted by the key of

  control of carriage return and interline spacing.

  The typewriter may be provided for writing from left to right only or for writing in both

  direction: from left to right when the machine is used se-

  lon the usual operating mode, and from right to left

  for printing a stored text. In the first

  In this case, the carriage 1 makes a return to the beginning of the

  writing as a result of a print command, and the

-5-

  reading unit 20 reads the contents of the memo.

  line 12 from left to right. After the impres-

  sion, the carriage 1 is again brought to the left margin

  before the introduction of a new text in memory.

  In the second case, the carriage 1 will perform the printing

  the memorized text starting from the last character introduced

  in the line memory 12, the pointer 13 being used

  se to record the contents of this memory. When the impression

  is completed, the cart is on the left margin

  and a new line of text can be memorized. A My-

  China can print in both directions can reduce

  half of the movements of the trolley 1, which decreases the

  on the guiding elements of the trolley 1 and reduces to a minimum

lost time.

  As shown in Figure 2, the striking orders

  kept in the memory 12 are transmitted by the pointers 13 or 20 to the selection means 7, to the striking member 8 and to the

  drive motor 9 of the carriage to cause the impres-

  text on the writing sheet.

  The machine described above has all the functions

  usually equipping this type of machine. She

  particular means of scanning the memory of li-

  12 by the display device 15, horn keys

  rection of the memorized text, etc. Numerous variants of the typewriter forming the subject of the invention can be provided. In general, an index moving along the typing cylinder can be envisaged to indicate to a user the locations that the characters introduced into the line memory will occupy on the writing sheet. This index is a repeater for the indication of the exhaust totalizer. Of course, it is possible to equip a cylinder typewriter with

  mobile keystroke of a memory circuit allowing the recording of

  a text, and driving means of the striking cylinder ensuring displacements corresponding to the pitch

  escape characters stored in memory. In this case, the

-6- 2462269

  index is fixed in relation to the frame of the machine and is con-

  the location of the printing location arranged

  usually above the ribbon guide.

-7-

Claims (3)

R E V E N D I C A T I 0 N S   1. Typewriter comprising a support (1) of a disc   positive impression (2) and a striking cylinder (3)   able to move relative to each other under the-   action of a drive motor (9), a keyboard (5), a line memory (12) capable of recording orders   keystrokes given on the keyboard (5) and corres-   laying on a line of writing, and reading means   (13, 20) of the contents of the line memory intended to com-   the printing of characters whose orders of   pe are recorded by line memory, characterized in that it comprises an index (4) arranged facing the striking cylinder and control means (10-14-19) relative displacements between this index (1) and the striking cylinder (3), said means being associated with the line memory (12) so as to be made active during the recording of each character strike command and to control a relative movement between the index ( 1) and the cylinder (3) in the write direction and a value equal to the corresponding escape step of the character whose order typing is recorded.   2. Machine according to claim 1, comprising a chain   mobile riot (1) able to move along the cy-   striker (3) and constituting the support of the   printing device (2), characterized in that the index is   constituted by the carriage (1), the auxiliary control means   (19) of the drive motor (9) of the carriage (1)   both connected in parallel with the line memory (12), so as to be made active at each recording by the   memory of a typing order of a character.   3. Machine according to claim 2, comprising a cir-   bake indicator (10) of the position of the carriage (1) by   to the striking cylinder (3) and an exhaust accumulator-   ment (14) connected in parallel with the line memory (12)   and to control the margin overruns, which are   characterized in that the auxiliary control means   -8- take a comparison circuit (19) of the position of the carriage (1) and the indication of the exhaust totalizer (14), this circuit (19) being intended to deliver commands to the drive motor ( 9) to ensure movements of the carriage (1) coinciding the position of the carriage (1)   and the indication of the exhaust totalizer (14).