DE1611448B1 - Device for the automatic control of the type stop sequence in manually operated, power-driven typewriters - Google Patents

Description

1 . ■■■ - ■■■■ - ■■■ - ■■ 2

The invention relates to a device for self- that the operation of a typewriter to indicate Control of the type stop sequence with von Neten Art is even more simplified and effective Hand-operated, power-driven writing-writing speed is increased. Despite the pre-engine with the key levers associated, lengthways, that with excessive stroke sequence the second slidable and pivotable, the intermediate storage 5 stop is saved and the controlled type tion of the scanned character serving intermediate in the next cycle of the printing cycle automatically to lever, which is reached by means of an over an all intermediate impression, may be removed during the process common rocker switchable and correct functions of the typewriter none then in the machine cycle effective power drive to the type key are operated. Is z. B. the car or Setting or triggering of the selected types has been triggered io slide return, you have to press be effective. wait until the next type key is pressed

The maximum writing speed from the beginning of the line is reached; the same goes for that powered typewriters is generally higher tabulation. In the interest of fluent writing the typewriter has to estimate The actual number of hits per unit of time, but how long it takes to carry out the function the keystrokes follow when entering via the keypad, then immediately after reaching the new one door never quite evenly, but rather in an irregular writing position to press the next type key. Consequence, in particular as a function of To avoid malfunctions and disturbances Follow the letters, numbers and genes to be keyed in by hitting the next one prematurely Sign. When the call type key is executed particularly quickly during the forward or backward movement impact consequences, especially when changing hands, e.g. B. can occur in the carriage are devices The combinations ch, en, a before that the input speed momentarily slide movement increases the key lock automatically is switched than the achievable writing speed, so that a type stop remains ineffective of the machine, so that an error in the print or so, or the key cannot be operated at all (see USA.-even an interruption of the writing flow, e.g. B. by Patent 2,103,921 and Technical Disclosure Jamming or clashing of two Bulletin, Vol. 8, No. 11, p. 1632). A similar type of lever, occurs. Interference can also result in a keystroke during the order arise that the writing carriage or type carrier duration of the switching process from small to large slide not yet exactly in the new one, the letter 30 or vice versa, shows the Spelling position corresponding to the spacing of the letters is used. US Pat. No. 3,157,265 before the next stop takes effect. sings have various disadvantages: in and of themselves,

As mentioned, the typewriter operator is responsible for avoiding these disruptions

wait for the control of the type stop sequence until the functional sequence of the side movements

have become kaiint, in which the stopping is ended if the stop is too fast, which, however, has an unfavorable effect on the

follow the second stop as long as the saved writing speed or the operator

until the first "stop" triggers the machine does not notice that this is happening during the

Functions are finished. - Characters keyed in during this function

In the main patent, an improvement and an expression has not been printed, and presses after the

design of this device, which is generally only used for the next 40

Lever type typewriters with a key assigned to a continuously rotating type, but then takes place

fender drive roller are applicable, under application, a misprint because the character entered first

tion of the known basic principle, a device is missing.

described, by means of which in rapid succession using the known arrangement for following keystrokes also on typewriters with 45 intermediate storage of an entered character a single, by rotating and inclining movement, the invention solves the problem that also a during With adjustable, swiveling type carrier of the following slide return or a tabulation process The limit stop until a certain character entered via a type key has expired. Minimum number is lost after the first stop, but is moved to the end of the slide and is saved immediately after the previous 50 has been printed and then automatically for the outgoing party Character reaches the setting without any pressure. This task is according to the invention longer pressing the button is necessary and manure has been solved by the fact that one in the Einohne that two buttons are struck at the same time switching path of the clutch pawl lever can. According to the solution after the main adjustable locking finger is arranged, which in Abhänpatent are the intermediate levers for the actuation of 55 gness from the exhibition of during the duration Adjustment oscillations in combination for the purpose of the carriage (or carriage) return and from position of the type carrier as coded with the characters during the duration of a tabulation process in a Representative approaches provided selector rails from effective position adjusted elements in its operative position formed and reached in their area of activity of their power. This solution according to the invention are one drive lying working position by means of a 60 number of advantages own. When operating the Ma spring element can be locked automatically and gripping the machine needs the duration of the slide movement when each with one approach "in a ball lock, and slide return or no more with tabulation to switch on the power drive is a one to be waited for or estimated, but rather it Clutch pawl optionally lifting, locking can already while this function is still running, Barer Küpplüngsklinkenhebel the clutch release 65 a new character can be entered. This information swing assigned. mation is achieved by the well-known locking of the

The purpose of the invention is this known pre-intermediate lever in its lower position for as long a direction to develop further in their effectiveness, saves until the carriage movement is finished; U.N-

then indirectly the selected character is printed. Since at this point the in the ball lock engaging approach of the intermediate lever is excavated, can practically at the same time Another character can be keyed in, which in turn is temporarily stored until the imprint of the first entered "character is executed. If the operator of the machine tries while the If you enter a second carriage movement after a first character, the ball lock will do this prevented; in this case the operator receives a signal, as it were, when at the end of the slide movement the first print is taken and he keeps his finger on the second key until he hears this imprint.

The invention thus offers a further relief in the operation of power-driven typewriters of the type previously described and improved at the same time the achievable writing speed.

According to a particularly useful embodiment of the invention, the locking finger is a Control rod with an actuated when a carriage (or carriage) return is triggered and under control the margin stop rack connected to the resettable locking arm. In an analogous way can the locking finger is preferably connected to the tabulating rocker via a second control rod which is locked in its effective action after its actuation until the type carrier is in the middle arrives at the next tab stop.

Since according to the slide movement to the left or to the right of the locking finger either over the the control rod assigned to the »slide return« function or via the »tabulation« function assigned control rod is adjusted in its effective position, the mechanical connection is the to construct both control rods with the locking finger so that each control rod is effective alone can be without the actuation of the locking finger by the other, not switched on control rod is hindered. This can be done in a simple way. by means of a slot connection between the Control rods and the control element carrying the locking finger can be achieved.

The invention is described below with reference to the drawing, which shows the for Invention shows essential parts of a typewriter of the type indicated above, in one embodiment explained.

The typewriter 10 shown in the drawing includes a platen 11 and a spherical one Type carrier 12, which is mounted on a carriage 13 so as to be longitudinally displaceable in the direction of the rows, as well as a keyboard 20. On this there are keys 21 and 22 for triggering the individual types as well as special ones Function keys, such as the carriage return key 23 and the tab key 24. The type keys 21 and 22 are effective on associated intermediate levers 25, on the underside of which one of the relevant Character assigned coding is located, and by actuating the intermediate lever 25 is a only schematically illustrated selection device 30 the setting of the type carrier 12 to the keyed type triggered. The intermediate levers 25 are normally inactive by means of leaf springs 25 α in their left Position against the action of tension springs 25 & locked and are in this position outside the area of action of the pressure wave 26 provided with drive vanes.

When a type key is pressed, for example key 22, a pawl 27, which repeats a The associated intermediate lever prevents tripping

25 pivoted down into its effective position so that it comes free from a leaf spring 25 a and is shifted to the right under the action of the tension spring 25 δ. The leaf spring 25 a has the effect of that the intermediate lever 25 is held in its lower position in which it is now in the range of action which is provided with two drive vanes on the circumference pressure wave 26. These The position of the intermediate lever 25 is defined as the storage position.

A half-turn clutch 40 is switched on for each printing cycle, by means of which both the pressure wave 26 as well as the selection device 30 are effective for selecting and setting the desired type will. The half-turn clutch 40 is switched on by means of a self-resetting clutch pawl 41 triggered, which in turn via a clutch pawl lever 42 and a release latch 43 is actuated. The clutch pawl lever 42 is normally in its position shown in the figure ineffective position in which he is due to the application of the release latch 43 to a frame part 14 is locked against the pulling action of the spring 44.

A clutch release rocker 28 transmits the downward movement of the respective released intermediate lever 25 to the release latch 43, so that now the spring 44 via the clutch pawl lever 42 acts on the clutch pawl 41 and a clutch play is triggered. In the course of a printing cycle there are more, in the drawing only hinted functions triggered such. B. the stop movement of the type carrier 12 after its setting and the stepping of the carriage 13 after the impression has been made. A wing of the now a half-turn executing pressure wave

26 moves the intermediate lever 25, which is in its storage position, to the left, so that selected rocker arms 25 c are actuated in a combination representing the actuated character and then the intermediate lever is returned to its inoperative starting position under the action of the spring 25 b . That position of the intermediate lever 25 into which it is shifted to the left by the pressure shaft 26 to actuate the selector rocker 25c is referred to as the control position.

A ball lock 29 of known design prevents that more than one of the intermediate levers 25 are in the storage position at the same time, there otherwise an incorrect setting of the type carrier 12 would be the result. However, the ball lock 29 is designed so that it enables an intermediate lever 25 to be in its control position and a second Intermediate lever 25 is at the same time in its storage position. This makes it possible without any consideration to trigger two types one after the other in the shortest possible distance on the clock cycle of the typewriter, without disturbing the regular impression cycle.

The step feed of the carriage 13 along a guide rod 15 takes place via a belt 51, which is shown in FIG looped over pulleys 52 and a drive pulley 53 in a closed loop. To the

Drive of the carriage 13 via the belt 51 in the buher control pawl 73 through the bolt 77 in the one direction, namely in the forward direction, is held in the operative position. As soon as the Shiite senses of the step feed, ie th 13 in the drawing has reached the desired tabulation position to the right, a spiral spring 54 is used, while the tabulation sensor 72 strikes against the set oppositely directed driving force from a 5 TäbuHeranschlag, and the Täbuh'er-Steuerldinke Electric motor 55 originates. This also serves as an 73 is counteracted by the action of the tension spring 75 drove to wind up the spiral spring 54 and pivoted to the left, so that the bolt 77 now ineffective Drive the half-turn clutch 40. sam is. The tension spring 75 therefore provides the tabulation

The return of the carriage 13 after Beschrh> Control pawl 73 counterclockwise in its th one line is returned to original, ineffective position by a carriage return key, while on 23 triggered, the stepping action again effective on a schematically shown slide 13 Schittenreicklaufeinrichtung 60 is effective. For that will. The triggering of the tabulation by means of the Tavorh'egenden Relation is essential only buUertaste 24 takes place via one in the drawing a tabulating drive 78, the ent control unit, shown schematically on the slide return device 61, which, when a slide is guided backwards, 15 neither directly nor power-driven, the previously belaüfs Rotary movement of the tabulating rocker 76 written by means of the slide return device 60 is rotated counterclockwise while its effects. ■ '

Resetting by means of a locking arm 62 and from this description of the tabulation and the

a bolt 63 is initiated as soon as at the end of the slide return device it becomes clear that each

a slide return operation of the type carrier 20 for the duration of the execution of the relevant function

slide 13 with its stop lug 65 an edge a certain element a defined position

Steeper stop 64 actuated. The stop lug 65 trims, for the slide return, the control

there is a shift in the margin stop gear shaft 61 and the tabulation control

rod 66 against the force of a compression spring 67 after pawl 73. This fact makes the following

Hnks, the margin stop rack 66 using a winch 23 the arrangement described,

Lever 68 pivots counterclockwise. in the middle part of the drawing is an on below

This in turn causes a pivoting movement of the locking mechanism, which is rotatably mounted on a cranked rod 81

Latch 63 counterclockwise, whereby the finger 80 is shown, by means of a spring 82 in a

Latch arm 62 released and inoperative under spring pressure relative to clutch pawl lever 42

force is returned to its ineffective position. 30 held in position wkd. This locking finger 80 'can against

It should be noted that a carriage return will still pivot the action of spring 82 into one position

triggers further functions, e.g. B. the line feed, in which he is in the path of an edge 45 of the

the platen "11, the downshift device, etc. clutch pawl lever 42 arrives so that their

An explanation of these functions is in front of the adjustment movement to the left under the effect of the

lying connection not required. 35 spring 44 is prevented. Then a trigger is the

For tabulation, the carriage 13 is in the known coupling pawl 41 by actuating the coupling

In the event of ineffective step-by-step switching, release trigger rocker 28 is prevented. .

ben, so that under the action of the spiral spring 54 at the cranked portion 83 of the rod 81

A control rod 69 and a control rod 79 move forward along the platen to the right

can, until the tab sensing device 72 is articulated on the carriage 13 40, each of which depends on the position

at the next set tab stop and the development of the control shaft 61 or the tabulation control

normal stepping becomes effective again,. .. khnke 73 can be adjusted to hnks. This is each

A particularly important part of the tabulation setting for the duration of the relevant function is the tab control pawl 73, because the tabulating front. the case, namely as long as the sled runs are significantly controlled by them. The 45 backwards the control shaft 61 through the locking tab control pin 73 is on a pin 74, which arm 62 is held in its switched position is on the carriage 13, rotatable and slowly ver- or as long as the TabuBer control pawl 73 through the slidably against the action of a tension spring 75 is mounted in its switched-on position and held in its normal position in the drawing. The connection of the control rods 69 and shown. A tabulating rocker 76 acts with a 50 79 with the cranked section 83 of the rod 81 Control finger 73 α and a Rüekstellfinger 73 δ is formed by means of elongated holes so that, if, the the TabüMer pawl 73 together, and this rod 81 by one of the control rods 69 or 79 Parts make the mechanical connection between being adjusted, this adjusting movement is not through the the movable carriage 13 and the stationary other control rod is hindered. orderly Elements of the typewriter. 55 In the following the working method of the described-Wenn the Tabüliersehwinge 76 explains a rotary movement enclosed device.

executes clockwise, it pushes against the control unit by actuating the Jlasle 23 or the

finger 73 α and causes a pivoting movement of the button 24 one of the two functions - slide

Tabulation control buttons73 around pin 74 in the clockwise direction - return = - tabulation - triggered,

smn, so that a bolt 77 behind the tab control 60 as mentioned, each a certain element in a

latch 73 can collapse so that it is in its effective position that it _; persists until the concerned

seed location is recorded. The process can now be ended by means of loading. Assume that by pressing

actuation of the tab key 24 a tabulation process for the delivery of the slide return key 23.

the slide 13 with the type carrier 12.

will. . 65 movement of the control shaft 61, the control rod 69 a

The backward finger 73 δ is so long on the TaTm pushing movement to the left, whereby the rod

Herschwmge 76 effective to wkd it in its counterclockwise direction in the sense of 81 and

To hold the clockwise adjusted position, as the hands the locking finger 80 in the path of the edge 45 of the

Clutch pawl lever 42 moved. Through the locking arm 62, the bolt 63 is held in its effective position until the return of the Carriage 13 is finished; that is how long it remains the locking finger 80 in its effective action.

- If a type key 22 is pressed during the return of the slide, the associated intermediate lever 25 is pivoted downward in the manner described and locked by means of its leaf spring 25 α , while at the same time engaging in the ball lock 29, and the clutch release arm 22 presses on the release bolt 43 of the Coupling pawl lever 42 to lift it off the edge of the frame part 14 and to release the thrust movement of the coupling pawl lever 42 to the left caused by the spring 44. In the path of the edge 45 of the coupling pawl lever 42, however, the locking finger 80 is so that the coupling pawl lever 42 is prevented from its full thrust movement and the half-turn clutch 40 and the pressure shaft 26 are not switched on. The intermediate lever 45 therefore remains in its locked position in which it engages the ball lock 29. If another type key, e.g. B. the button 21 is pressed, the ball lock 29 prevents the actuation of the intermediate lever 25, so that this button actuation remains ineffective if it is initiated while the slide return function is running. As soon as the carriage 13 has reached the left edge, the stop lug 65 hits the margin stop 64, and the bolt 63 is released via the angle lever 68 so that the locking arm 62 and the control shaft 61 can return to their starting position. As a result, the control rod 69 is also withdrawn to the right in its starting position, so that the locking finger 80 is reset out of the way of the edge 45 and the release of the half-turn clutch 40 is released. The character selected by the key 22 is now printed.

The printing is delayed in a corresponding manner after a type key has been pressed when a tabulation is being carried out. As previously described, when the tab key 24 is pressed, the tab control pawl 73 is pivoted into its operative position via the tab rocker 76 and locked there. The return finger 73 b of the tab control pawl 73 holds the tab rocker 76 in its actuated position, and the control rod 79 is effective on the cranked rod 81 to move the locking finger 80 in the path of the edge 45 of the coupling pawl lever 42. If any type key 22 is pressed immediately after pressing the tab key 24, the associated intermediate lever 25 is held in its memory position in the same way as previously explained until the tabulation is ended the tabulating rocker 76 is released and rotates counterclockwise back to its starting position, whereby - analogously to the carriage return So run - the locking finger 80 is pulled out of the path of the edge 45 via the control rod 79.

It can happen that a carriage return or a tabulation is initiated before the

For this purpose 1 sheet of drawings of the clutch pawl lever 42 according to a preceding one Printing process has reached its starting position. In order nonetheless to overuse the parts avoid and to ensure an undisturbed operational sequence, the cranked rod 81 is arcuate Oblong holes 85 stored. In the case described, the locking finger 80 should not yet be attached to the If the clutch pawl lever 42 is completely reset, the rod 81 can counteract the action the spring 82 give way down until the clutch pawl lever 42 is at its original (right) Has reached. The spring 82 then ensures that the rod 81 and the locking finger 80 back into their upper effective layer can be withdrawn.

Claims (3)

Patent claims: 1. Device for automatic control of the type stop sequence for manually operated, power-driven typewriters with the key levers assigned, longitudinal displacement and pivotable intermediate levers which serve to temporarily store the keyed characters in the middle of a clutch release rocker that can be switched on via a clutch release rocker that is common to all intermediate levers and then in the machine cycle effective power drive for setting or triggering the selected types take effect, with the intermediate lever for actuating adjustment rockers in combination for the purpose of setting a rotating and inclinable spherical type carrier as having approaches encoded with the characters provided selector rails and located in their area of action of their power drive Working position can be locked automatically by means of a spring element and each with one Approach to engage in a ball lock and a one to connect the power drive Clutch pawl Optionally lifting lockable clutch pawl lever of the clutch release arm is assigned, according to patent 1207942, characterized in that a in the engagement movement path of the clutch pawl lever (42) adjustable locking finger (80) is arranged, which depending on the switching position of during the duration of the slide (or carriage) return and from during the duration of a tabulation process into an effective • position adjusted elements (62; 76) comes into its operative position. 2. Apparatus according to claim 1, characterized in that the locking finger (80) via a control rod (69) with a locking arm (62) which is actuated when a carriage (or carriage) return is triggered and which can be reset under control of the margin actuator rack (66) connected is. 3. Apparatus according to claim 1, characterized in that the locking finger (80) has a second control rod (79) is connected to the tabulating rocker (76). OOpy 009 531/138