DE2617298A1 - Typewriter keyboard linkage avoiding high speed errors - has machine and typing drives operable through two independent couplings - Google Patents

Abstract

The carriage return function which is actuated via an element chain function-key lever, tripping lever, intermediary lever, pull rod and lever is operated by an angled end of the lever which is itself operated via a saddle lever and release lever for releasing the drive rocking arms. A projection on the lever simultaneously releases a looped spring coupling via a saddle lever which coupling sets the drive rocking arm in motion over whose bolt the carriage return coupling is controlled and the tabulator mechanism driven. The swivel movement of the release lever, besides being used for operating the power drive is also employed for summing the machine functions.

Description

2617299

VEE Kombinat ZMTROIiIiC TIT 1 - Rw. -526

Albrecht / Hallensleben

Key mechanism for power-driven writing or similar Office machines

The invention relates to a keypad for automatic control of the sequence of functions in manually operated, power-driven typewriters or similar office machines with universal type carrier, in which in addition to the mutual Key lock an intermediate storage of the function occurred while the machine game is still running.

To avoid malfunctions resulting from a too fast keystrokes are devices known, by means of which the subsequent keystroke in each case with rapidly successive keystrokes is saved until a certain machine runtime has elapsed after the first stop and immediately after Imprint of the previous character for release arrives without a prolonged actuation of the Tasfe is necessary and without two buttons effective at the same time can be posted. This is essentially done in that the key lever associated with the briefly struck after another key lever is pivotable and longitudinally displaceable intermediate levers a spring element is locked in readiness that it immediately after the ball lock still during the ongoing machine game is released again, swiveled into this and thus initiated the new impression can be.

A further developed on the basis of this intermediate storage Device allows a during the

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Return of the type carrier slide or during the tabulation process to save typed characters up to the end of the movement sequence and immediately afterwards to be printed automatically. This is done essentially by the fact that the clutch is also actuated for the cyclical work processes by means of a locking finger until the end of the puncture processes, slide return and tabulation is prevented. A differently designed device sees the same principle also the double lock, whereby the second lock does not depend on the duration of the function as in the case of the previous one but is controlled dependent on the sequence of movements of the transmission links.

In addition, there has been proposed a device in which the keypad lock, the storage the quick follow-up keyed-in print function and the triggering of the power drive by a release lever is effected, the rotatably arranged on each -Zvd.schenh.ebel is, can be immersed with a locking nose in the ball lock, for the purpose of intermediate storage by means of a catch hook can be locked and through his '' Pivoting movement after the intermediate storage actuates a rocker to trigger the power drive.

These known or proposed devices allow the mutual locking of the writing function key drive as well as the blocking of the write function key gear during the execution of the machine functions Slide return and tabulation and the automatic control of the type stop sequence, their effects extend however, does not rely on the mutual locking of the machine function key gears 3 the mutual locking between the two key gear groups and the automatic Control of the type stop and the machine functions.

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The purpose of the invention is to counteract this disadvantage and presents itself, the task of a keyboard for power-driven typewriters or similar office machines to create with universal type carrier, using the known or proposed lock memory and Control means a multiplicity of machine function key drives is so included in the keyboard design that with little up / and a mutual blocking for all Key gear, the automatic control of the type stop and the machine function sequence as well as a more efficient Drive, especially with connecting punctures, given is.

According to the invention, this object is achieved by a key mechanism in which the writing function key gears and the machine function key gears are driven via two different, independently acting clutches, the drive through a uniform ball lock that encompasses all key gears, mutually lockable by means of the known release lever and when the key is pressed for a short time can be stored and in which the sequential sequence of the type stop and machine functions is automatically controlled. The pivoting movement of the release lever is used not only to trigger the power drive but also for the summation of machine functions Release lever for unlocking drive arms actuated and its approach at the same time triggers a wrap spring clutch via another Sattelhefcel, which sets the drive arms in motion and the carriage return clutch is switched via the bolt and the tabulator mechanism is driven to lift the pawl out of the rack. The puncture Wagenrüoklauf with line circuit is triggered via an analogue link chain and de * ¹ carriage return, the Tabulatormechanismus by bolts unlocked 609852/0623

Drive rockers controlled by the saddle lever, the wrap spring clutch, the cam and a roller caused by two coupling transmitted movement follow a rocker. A recessed saddle lever pivots at the same time a driver pawl in the area of action another saddle lever moved through the curve and a second roller, causing its movement to the with the drive lever connected to the driving pawl for the line shift is transmitted. The two roles are there Arranged offset by 90 °, whereby the saddle lever can initially be adjusted over 27o ° from bottom to top dead center and can be reset to bottom dead center during the further 90 °. The permanent function of the line feed takes place by overpressing a spring-loaded stop of the puncture keypad via the functional connection of a, link chain marked in the exemplary embodiment. The puncture line break by half a line spacing forward can be triggered via a likewise analog link chain by means of a lever, the bent end of which via a saddle lever swivels two driver pawls into the area of action of the saddle lever, which simultaneously triggered by the approach of the lever drive is moved, whereby its movement on the one with the driver pawl connected drive lever for the line feed backwards by half a line spacing and to the one with the other drive pawl connected drive lever for the line shift forward is transmitted. The invention has the advantage that both the mutual locking of the Typing function key transmission and the machine function key transmission as well as the mutual locking between the two key gear groups, the intermediate storage short-term keystrokes, the automatic control of the consequent puncture processes and the effective Drive is given, especially with connecting punctures, which means puncture disorders and incorrect operations, which result from too fast a keystroke sequence can arise, are excluded and which further facilitates the rhythmic operation of force-

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powered typewriters or similar office machines is created.

An embodiment of the invention is explained in more detail with reference to the drawing, which is limited to the diagrammatic representation of the parts of the key mechanism that are essential to the invention.
It means:

Pig. 1 The diagrammatic representation of the 'keyboard part of the keypad.

Pig * 2 The graphical representation of the clutch assembly of the keypad. 'The puncture button levers 1} 2 j 3, which are stored and guided in a known manner, and the button-less puncture levers 4 $' 5 | 6} 7 are in operative connection at their release lugs with one release levers 9, which are rotatably and displaceably arranged on intermediate levers 8. The release levers 9 are equipped with a locking lug 9a for actuating the ball lock 1o, a locking lug 9b for locking the release lever S on the frame edge 1oa of the ball lock 1o and a bore 9c, in which a fork head 11a of the pull wires 11 is rotatably supported. The puncture button lever 1 for carriage return / line feed (WR / ZL) is provided with a recess 1a and also actuates a saddle lever 12, which engages the release lever 9 of the buttonless puncture lever 5 for the line feed when the key depth is appropriate. ^; The buttonless puncture levers 4 | 5J 6 are operated via the Sattelhehel 13 and 14 as well as the lever 15 and the axis 16 of associated keys, which are not shown. The key button-free function lever 7 interacts with a tab key lever 18 through its extension 7a via a rocking lever 17. The drive rocker 1o connected to the pull wire 19 and acting on the intermediate lever 8 serves to reset the engaged release lever 9. The pull wires 11 fastened with their fork heads 11a to the release levers 9 are connected with their other ends to the levers 21, 22, 23; 24

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261729a

25} 26 and 27 attached and provide the operative connection between the keyboard part and the coupling assembly of the Key mechanism.

The levers 21} 22} 23 operate the driver pawl.;: Ι 28} 29} 30} which are hinged to the drive levers 31} 32} 33. are. The levers 24 and 25 act on the saddle levers 34 and 35, which actuate the release levers 36 and 37. The release levers 36} 37 lock the drive rocker 38 and 39 for the carriage return and the tabulation. . ...

Two coupling 40; 41 connect the drive arms 38 and 39 with the rocker 42, which is driven by the cam 44 via a roller 43. ·. ■ ■. One. Wrap spring clutch 45 drives the curve 44 and through it connects via a roller 46 to a saddle lever 47 which, through its cross strut 47a, is connected to the driver pawls 28} 29} 30 cooperates. The wrap spring clutch 45 is triggered by a saddle lever 48, the saddle 48a of which from the approaches 21a} 22a} 23a} 24aj 25ä, · 26a} and 27a the levers 21} 22} 23} 24} 25} 26 and 27 is operated. . ...:

The mode of operation of the key mechanism according to the invention is explained on the basis of the individual puncture gears as follows: The tab function is activated by the tab key lever 18 triggered. The approach 18a of the tab key lever 18 pivots against the train of the spring 49 the ■ rotatable about the Key lever axis .se 5o mounted rocker arm 17 and thus' The buttonless function lever 7 via the projection 7a. Through the release nose of the buttonless puncture lifter 7 while the release lever 9 is moved vertically downwards, its locking lug 9a gets between the balls of the Ball lock 1o and locked with its locking lug 9b on the Frame edge 1oa of the ball lock 1o. The release lever 9 is actuated by the leaf spring 58 with the support of the peder 51 a rotation which is transmitted to the lever 27 and through lug 27a of the lever 27 to the saddle 48a of the saddle lever 48 is acted upon. The release lever 36 is against the train

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the spring 52 moves and unlocks the through, the hook 36a of the release lever 36 held drive rocker 39 » whose bolt 39 a is the coupling point to the tab mechanism to be driven, and the thus unlocked drive rocker 39 follows under the train. the spring 34 of movement the rocker 42, with which it is connected by the coupling 41 · The simultaneously by the shoulder 27 a of the lever 27 The saddle lever 48 pivoted against the spring 59 releases the wrap spring clutch 45 and thus releases the over the curve 44 and the roller 43 guided drive of the rocker 42. The curve 44 rotates clockwise and is so urgent! * That the roller 43 is in the starting position in the top dead center. Moved during the first 90 ° turn itself, the rocker 42 by the train of the spring 53 of the curve then into the bottom dead center and during the closing 270 ° rotation, the return stroke takes place in the top dead center.

The function of the carriage return with line feed (individual function) is triggered by the function key lever 1. A release lever 9 _t dips into the ball lock 1o with its locking lug 9a in the manner described when the function key button 1 is actuated, is locked with its detent 9b on the frame edge 1oa of the ball lock 1o and is twisted under the tension of the spring 51, transmits its movement through the pull wire 11 to the lever 26 which actuates the saddle levers 55 and 48. The saddle lever 55 continues to act on the release levers 36 and 37 and thus unlocks the drive rocker arm 38 and 39 »so that these caused the movement via the saddle lever 48, the wrap spring clutch 45, the cam 44 and the roller 43 and transmitted through the couplings 4o and 41 can follow the rocker 42 «Via the bolts 38a and 39a del * drive rockers 38 and 39, these control movements reach the carriage return mechanism and the tabulator mechanism in the manner shown Cross brace 47a of the

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Saddle lever 47 can be detected. The recesses 55a cause in your saddle lever 55 that the pawls 28 and 29 remain unaffected during its movement, so that only the driving pawl 3o can be brought into real pitch can, through the starting from the curve 44, through the roller 46 and the saddle lever 47 with its cross strut 47a Movement transferred to it actuates the drive lever 33 connected to it for the line feed. The roles 43 and 46 are offset by 90 °, whereby the saddle lever 47 initially moves over 270 ° from the lower to the upper Dead center and moved back to the bottom dead center during the further 90 °.

The permanent function of the carriage return with line break. By overpressing a not shown, sprung Functional key lever 1 acts on the key lever stop Via the saddle lever 12 on the upper edge of the Zvd.sch.enhebeI belonging to the buttonless puncture lever 5 a, whereby the release lever 9 arranged on the intermediate lever 8 is brought into its operative position and the drive connection via the pull wire 11, the lever 23, the Mitnehnierklinke 3o and the saddle lever 47 to the drive lever 33 is made. Through this connection, the The line feed function is repeated as long as the puncture key lever 1 is held in its lower position will. Before the trigger nose of the puncture button lever 1 is ■ a recess 1a, which is held in the permanent functional position Puncture button lever 1 the release lever 9 of the associated intermediate lever 8 leaves so much space that it only has one Performs a single work cycle and that it can be reset via the intermediate lever 8 by the drive rocker 2o is.

The same line break function, but without a carriage return is triggered as a single or permanent function by pressing a line key (not shown). The buttonless puncture lever 5 is lowered via the saddle lever 14 and provides the drive connection via the associated release lever 9, the pull wire 11, the lever 23, the driver pawl 3o and the saddle lever 47 to the drive 33 ago. If the key depth is normal, the individual

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function triggered while at twice the depth of the key the permanent function is activated for as long as the line switch key is held in its lower position.

The! Puncture line break by half a line spacing backwards is triggered by the button lever 56, reaches the buttonless function lever 4 via the saddle lever 13 and runs over the links 9; 11; 22; 29; 47 $ 32 off. The line feed forward by half a line spacing is made up of the line feed just mentioned half a line spacing backwards and the normal Line feed forward together with the action of the drive levers 32 and 33 in the known not shown Way are linked in the line switch mechanism. Like the the previously described line feeds, the function is based on a key lever, not shown, via the armpit 16, the lever 15, the button-free function lever 6 and the release lever 9, also not shown, intermediate lever 8 and pull wire 11 to the lever 24 'which with its bent end 24b engages on a saddle lever 34 and through him the two driver pawls 29 and '3o in engagement with the cross strut 47a of the saddle lever 47 brings. The drive triggered at the same time by the projection 34a moves the saddle lever 47 and thus both drive levers 32 and 33. The carriage return function is activated by actuating the Function key lever 2 via the links, not shown, release lever 9 »intermediate lever 3, pull wire 11 and the lever 25 triggered. An angled end 25b of the lever 25 acts on the saddle lever 35, which the release lever 36 and 37 actuated and thus the drive arms 38 and 39 are unlocked. The approach 25a of the lever 25 releases at the same time via the saddle lever 48 the wrap spring clutch 45, which provides the drive for the drive rockers 38 and 39 sets in motion; whereby the carriage return clutch and the tabulator mechanism are switched via their bolts 38a and 39a is driven. The functional combination of both mechanisms results in the carriage return

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The puncture regression is made by your function key lever 3 starting, like "with the line feed already described, Via the links (not shown), the release lever 9, the intermediate lever 3, the pull wire 11 and the lever 21 triggered. The lever 21 pivots with its angled end 21b the driver pawl 28 in the area of action of Cross brace 47a of the saddle lever 47 and solves through, his Approach 21a off the drive.

The movement of the Mitnehra pawl 23 is transferred to the i.iit her connected drive lever 31 »of which the regression is effected. As with the line feed, the single function also becomes the individual function when stepping backwards through the normal key depth triggered, while with twice the depth of the button the permanent function is activated for as long as the button des Puncture button lever 3 held in its lower position will.

Common to all the functions described is the following Reset process for the release lever 9.

Mt tripping the wrap spring clutch 45 is set, the Curve 44 in motion, the roller 46 driven by it passes through the Y / eg from top to bottom dead center and pivoted the saddle lever 47 »its movement through the pull wire 19 arranged at the hinge point 47b of the saddle lever 47 is transmitted to the drive rocker 20. By, the movement the drive rocker 20 is the in the operative position Zwischen.enh.ebel 8 pushed forward, which with it connected release lever 9 follows this shift, whereby the locking lug 91 emerges from the ball lock 10, the locking of the locking lug 9b on the frame edge 10a is released and the intermediate lever 8 and the release lever 9 below the action of the tension spring 57 returns to its original position.

With this redistribution, in which only with the loosening of the Locking the release lever 9 and the ball lock 10 is released again, causes the earlier release another puncture or another character stop is excluded, thereby reducing the time sequence

all key-ins are regulated and the consistent processing of cy / ic-stored entries is guaranteed is. An additional interlocking of the function keys takes place by the drive rocker arm 20, which after triggering the wrap spring clutch 45 via the roller 46, the saddle lever 47 and the pull wire 19 inevitably in the Movement range of the idle intermediate lever 8 is pivoted and their key-operated vertical stroke so prevented for a long time until it has swung back into its original position. This additional blocking of the function keys each other lasts longer than the blocking of the writing keys and the puncture keys among themselves.

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Claims (2)

Claim, e Keypad for power-operated typewriters or similar office modules with universal type carrier, in which the mutual locking of the write function key gears, the storage of keyed-in type stop functions as well as the automatic control of the type stop sequence and the triggering of the power drive is effected by a release lever which is rotatable on each of the intermediate levers assigned to the keypad levers is arranged, with a locking nose in the ball lock is immersed, sum purposes of Storage can be locked by means of a catch hook and the power drive through its pivoting movement can be triggered via a rocker arm, characterized in that the write function key gears and the machine function key gears only have two different, independently operating clutches Drivable, the drive through a uniform ball lock that encompasses all key gears mutually lockable by means of the known release lever and with brief keystrokes storable, the sequential sequence of the type stop and machine functions is automatic controllable and the pivoting movement of the release lever except for the release of the power drive for the . Summation of machine functions is used » 2. Key mechanism for power-driven typing or similar Office machine according to Claim 1, characterized in that the puncture button lever via a link chain (2), release lever (9), intermediate lever (8), Pull wire (11) and lever (25) triggerable function carriage return through an angled end (25b) of the Lever (25), which via a saddle lever (35) release lever (36, 37) for unlocking the drive 609852/0623 - 13 - gen (3Ω »39) and actuated by a shoulder (25a) of the lever (25) which triggers a wrap spring clutch (45) at the same time via a caliper lever (48), which sets the drive rockers (38, 39) in motion, via the bolts (38a , 39a) the carriage return clutch is switched and the tabulator mechanism is driven, can be realized. Key mechanism for power-driven typewriters or similar office machines according to Claims 1 and 2, characterized characterized in that the puncture carriage return with return via a gear chain puncture button lever (1), release lever (9), intermediate lever (8), pull wire (11) and lever (26), the saddle lever (55, 48) actuated, can be triggered - that the carriage return and the tabulator mechanism by means of bolts (38a, 39a) the Antriebschwingeii (38, 39), which by the The saddle lever (55) is unlocked via the release lever (36, 37), and the wrap spring clutch is unlocked via the saddle lever (48) (45), a curve (44) and a roller (43) caused by coupling (40, 41) transmitted movement of a rocker (42) follow, is controllable, that the recess for driver pawls (28, 29) Saddle lever (55) at the same time a driver pawl (30) in operative connection with one through the curve (44) via a roller (46) moved saddle lever (47) pivots, whereby its movement on the with the Driving pawl (30) connected drive lever (33) for the line switching is transferable - that the Rollers (43, 46) are arranged offset by 90 °, whereby the saddle lever (47) initially over 270 ° from lower to upper dead center adjustable and can be reset to lower dead center during the further 90 ° is - and that the permanent function of the line feed by overpressing a spring-loaded stop of the Puncture button lever (1) triggered, via the action connection of a link chain saddle lever (12), intermediate lever (8), puncture lever (5), release lever (9), Pull wire (11), lever (23), driver pawl (30), saddle lever (47) and drive lever (33) can be implemented is, Key mechanism for power-driven writing or similar Office machine according to claims 1 to 3 »thereby characterized in that the puncture line feed forward by half a line spacing through a link chain Puncture button lever, axis (16), lever (15), buttonless puncture lever (6), release lever (9), Intermediate lever (8) and pull wire (11) can be triggered by means of a lever (24), the bent end of which (24b) Via a saddle lever (34) the driver pawls (29, 30) in operative connection with the, through the at the same time triggered by the approach (24a) of the lever (24) The saddle lever (47) that is moved by the drive swivels, causing its movement to connected drive lever (22) for the line feed backwards by half a line spacing and on the with the driving pawl (30) connected drive lever (33) for the line switching forwardly transferable is. - Id - List of Eesugszeichen used 1 Function key lever 2 Function key lever 3 Function key lever 4th buttonless function lever 5 buttonless function lever 6th buttonless function fog 7th buttonless function lever 1a Recess 7a approach 8th Intermediate lever 9 Release lever 9a Locking nose 9b Locking approach 9c drilling 10 Ball lock 10a Frame edge 11 Pull wire 11a Clevis 12th Saddle lever 13th Saddle lever 14th Saddle lever 15th lever 16 axis 17th Rocker arm 18th Tab key lever 18a approach 19th Pull wire 20th Drive arm 21 lever 21a approach 21b angled end 22nd lever 22a approach 23 lever 23a approach 609852/0623 24 Iiebel 24a approach 24b angled end 25th lever 25a approach 25b angled end 26th Iiebel 26a approach 27 lever 27a approach 28 Driving pawl 29 Driving pawl 3o Driving pawl 31 Drive lever 32 Drive lever 33 Drive lever 34 Saddle lever 35 Saddle lever. 36 Release lever 36a hook 37 Release lever 38 Drive arm 38a bolt 39 Drive arm 39a bolt 4o Paddock 41 Paddock 42 Swing arm 43 · role 44 Curve 45 Wrap spring clutch 46, role 47 Saddle lever 47a Cross brace 47b Pivot point 48 Saddle lever 48a saddle 609852/0623 - 1Y - 49 feather 5ο Key lever sleeve 51 feather 52 feather 53 feather 54 feather 55 Saddle lever 55a Recesses 56 Button lever 57 Tension spring 58 Leaf spring 59 feather 609852/0623 - 18 - State of the Art Publications Report For the determination of the state of the Technil: was the us available patent literature of the GDR and FRG of the following classes and groups researched « 15g - 14, 15g - 23, 15g - 25 / 0.2, 15g - 23/01, 15g - 40/01, 15g - 40/03, 15g - 45/15, 21a1 - 11/02 The following descriptions of the invention were taken into account in the delimitation from the state of the art: 1 152 115 15g - 23 ■ DT-PS 1 2o9 942 15g - 25/02 DT-AS 1 611 448 15g - 25/02 DT-AS 1 2o9 15o 21a1 - 11/02 DT-AS 1 965 o31 1-5g - 25/02 DT-AS CVJ o34 583 15g - 40/03 DT-AS 1 927 963 15g - 25/02 DT-AS 429 383 15g - 40/03 DT-PS WP B 41 j / 183 057 (DWP registration) In the description of the prior art are the descriptions of the invention 1 2o7 942 1.611 448 2 o34 583 1 965 o31 V / P B 41 j / 183 o57 (DWP registration) been sucked in one after the other. 609852/0623