DE356916C - Typewriter with automatic line break or backward movement of the carriage by power drive - Google Patents

Description

Typewriter with automatic line break or carriage backward movement by power drive. The present invention relates to a device for recycling the typewriter on typewriters by power drive.

A device has already been proposed with the help of an electric motor the line feed and also the return of the car. Here, right and left margin stops come in Application that close or open an electrical circuit breaker. Has When the carriage reaches the end of its path to the left, it grips the left margin stop and closes the electrical one Electricity for the motor, whereby the carriage is moved back and the line break is effected. When moving to the right the car is held up by the right margin stop, which controls the electric Electricity opens again.

The present invention is based on the object of providing aids to bring about an automatic return of the carriage, from any position. For this purpose, the left margin stop can be set to define a specific carriage return zone. The carriage is caused to create operating conditions of the machine which may cause an electrical circuit breaker to close - when a punctuation key (including period and hyphen) or the space bar is pressed; d. H. all keys that can be used when the line is finished.

A special universal rod is used for this purpose, activated by any punctuation key or by the space bar and under normal circumstances to close the current-closing device is ineffective. However, if the car enters the said return zone, then the left margin stop enables an intermediate organ to move around together to work with the mentioned universal rod and the mentioned circuit breaker, what, if any punctuation key or the space bar is pressed, the circuit breaker can be closed, thus running the engine begins.

Care has been taken to keep the circuit breaker in their effective working position to be locked during the time in which the car is in its Return movement executes, so that the struck type key is in its rest position can return without interrupting the return movement of the carriage. These The locking can be triggered again by the right margin stop if the Car strikes against him during his sore movement.

It is also desirable to keep the keys depressed (including those who initiate the return movement of the carriage) as long as the carriage makes its return movement. This can be done with the help of a locking bar which can detect the said keys, "velche with the Current circuit device can be brought into connection. The establishment is here taken so that the said rod can only work when the car is in the return zone. The buttons can also be triggered again automatically when the return movement of the carriage is finished.

If desired, a bell can also be used for the scribe gives a sign when the car enters the return zone.

Fig. I of the drawing shows a typewriter in a diagrammatic representation, as far as it is necessary to recognize the subject matter of the invention.

Fig. 2 shows the side view of the machine with the individual parts in the rest position and with the carriage outside the return zone. Figure 3 is a similar view, but with the individual parts in a position such that the circuit breaker can be closed by depressing an intersection or space bar.

Figure 4 is a similar view showing a punctuation key depressed, the strobe connection device already closed and (read intermediate organ is locked in its effective position.

Fig. 5 is a view similar to Fig. 4, but in which the circuit breaker is closed by means of a special button.

Fig. 6 shows the diagrammatic representation of "part of the" machine with the carriage in the return zone, about to detect an edge stop.

Fig. 7 is a diagrammatic representation of part of the machine with the right margin stop and tools for opening the circuit breaker. _ By striking the letter key io and the punctuation key ii are the carrying them lever 1: 2 and 13 about the pin 14 against the bias of suitable retreat f edern 1 5 pushed down, whereby a crank lever 16 and consequently the type levers 17 are rotated about their pivot so that the types 18 strike the front surface of the rotatable platen: 2o carried by the carriage 21. The latter can be moved from left to right in the machine in order to bring about a letter feed at the type stop, with the help of the spring drum: 22, which is connected to the carriage by the belt 23 . This movement takes place under the action of an inhibiting device which has an inhibiting wheel: 24 which is connected to the usual, one-sided, small toothed wheel 25 which meshes with the toothed rack: 26. If the type lever approaches its printing position, a lug 2-7 on it causes a backward movement of a circular arc-shaped rod 28 of the rail 30, and with the help of the Ouerstange23 the lever 32 is moved backwards against a return spring around a loose, rotatable pawl 33 and to move a pawl 34 fixed to the lever 32 back and forth between the teeth of the ratchet wheel 2-4, as a result of which the carriage is moved one letter distance further. The rear end of the common frame 30 is rotatably seated on an upwardly extending arm 35 which is seated on the oscillating shaft 36.

A special space bar 37 can be used to move the carriage step by step without pressing. This button extends along the front of the machine and is carried by two arms 38 on either side of the machine. These two arms extend forward from a shaft 40 on which they are fastened and which, when the space bar 37 is depressed, is set in oscillating motion against the tension of a return spring (not shown). Near the center, this shaft 4o still has (rearwardly extending arm 4, which, when the shaft swings out, engages a downwardly reaching arm 42- of the shaft 36 , in order to set the universal frame 30 in motion and accordingly to move the latch lever back and forth The oscillating shaft 4o rests in the side cheeks of the frame 43, namely the left end of this shaft is mounted in a bracket 44 which is fastened to the frame 43. This bracket has a V -shaped shape and extends downwards and to the side of the frame to allow certain mechanisms, which are described in more detail below, to pass freely. From here the bracket extends upwards again to receive the shaft 40.

The platen can with the help of the usual handwheels 45 or with. The line switch lever 46 (Fig. I) can be set in rotation. The line switch lever can be turned to the right about its pivot pin 47, and with the aid of a tongue 48 seated on it, a slide 5o is moved backwards against the tension of the return spring 5 1. This slide has a pawl 5: 2 which moves the line index wheel 53 , which sits on the platen shaft 54, whereby the platen is rotated by one line spacing.

An electric motor 55 can be used to achieve an automatic line switching movement of the platen 2, o and to retract the carriage: 2i into the initial position for writing a new line. This is included in a circuit formed by two lines 57 and 58 which extend to the clamping screws 6o to which a power source can be connected. The circuit-breaker 61 is enclosed in the line, which is usually open and is closed at certain times (with the aids given below) in order to start the motor and (read pulling tape 62 to wind it up on the roll 63, the is seated on the motor shaft 64. This belt is guided over rollers 65, 66 ti - # I 67 -, and is connected at its other end to a rod 68 in order to move a slide 7o to the right, against the tension of the return spring 31, The slide 70 is guided on the carriage 21 and is equipped with a hook 72 which is able to grasp the line switch lever 46 in order to rotate it and thus to advance the platen by one line. The carriage is then withdrawn to the right, uni to start a new line. the carriage 21 may be made of different positions, within certain limits, retired, to be determined in advance and define a zone can be moved into the 1 of the car. In order to determine this zone, an edge plate 73 is used on the left-hand side, which sits displaceably on the oscillating shaft 74 and can be adjusted with reference to a toothed rack 75 which is fastened on the shaft 74. All lines of writing end within this discussed zone.

In order to initiate the return movement of the carriage from any position within the return zone, the machine can be set to a particular operating condition such that when a punctuation key is pressed the circuit breaker 61 is closed, thereby starting the engine to return the carriage. In order to bring about this operating condition of the machine, the carriage can be provided with a projection 76 (Figs. I and 6) which, as soon as the carriage enters the zone, is able to grasp a lifting piece 77 which is attached to your left margin stop 73 , in order to set this, together with the shaft 74 on which it sits, in a swinging motion, in the sense of the pointer of a clock (Figs. i to 5). This also causes the rack 75, which is connected to said oscillating shaft 74, to swing out, so that the lower end of the depending arm 78 moves ZD and allows the intermediate member 79 to enter a gap 8o between the sliders 81 and 8 : 2 to penetrate and thus prevent it from making a lost motion. These two slide rods 81, 82 form a connection between the circuit device 61 and an arm 83 of a universal rod 84, which is set in motion only by depressing a punctuation key or the space bar or a special key, which is described below and serves to control the slide 81 to move backwards. It can be seen from the drawing that the intermediate member 79 is attached to an angle lever 85 . It is usually held pulled out of the gap 8o with the aid of said arm 78 which engages the upper end of the lever 85 . This lever is subject to the tension of spring 86 (Fig. 2). The arm 78 is held with the aid of the latch 87 (Fig. 6) , which is able to hold the arm 78 either in the rest position or in its working position. If a punctuation key is struck while the carriage is outside the return zone, the universal rod 84 and the slide 81 move inactive against the tension of the return spring 89 which engages the slide, and consequently the circuit breaker 61 is not closed either. However, as soon as the carriage enters the return zone, the arm 78 is moved and the intermediate member 79 is inserted into the gap 8o with the aid of the spring 86 which engages the angle lever 85 rotatably mounted on the frame 43 at gi.

If a punctuation key ii is struck (with the intermediate member 79 engaging the gap 8o between the slide rods 81 and 82 ), the universal rod 84 is rotated about it, e pin 9: 2, and the downward-reaching arm 83 causes a movement of the slide rod 81 of the intermediate element 79 and the sliding rod 8: 2 to the rear, whereby a hook or a projection 93 on the sliding rod 82 moves away from the pin 94 on the angled lever 95 of the current-connection device 61. The angle lever part 95 then moves in the direction of the pointer of a 1 o'clock around the pivot pin 96 with the aid of the spring 97 in order to close the circuit breaker 61. As a result, the engine is started and the car returns to its initial position. In order to enable a backward movement of the intermediate element 79 with the slide rod 81 during the closing movement of the current-connection device, it is slidably attached to the angle lever 85 with the aid of the head screws or head pins 98 which engage in slots 99 of the intermediate element. Here, a spring ioo is provided, with the aid of which the intermediate member 79 on the angle lever 85 is withdrawn.

It is desirable to keep the circuit breaker closed so that the motor will continue to move until the carriage has returned to its initial position without the need for the scribe's attention. For this purpose, the intermediate member 79 is expediently locked in its i working position (Fig. 4) with the aid of a pawl ioi, which is designed as an angle lever and usually assumes an inactive position (Fig. _2). This pawl is brought into its working position by a spring when the arm 78 swings out into its working position. A connection is created between the arm 78 and the angle lever pawl by a pin 103 on the pawl (Fig. I). If the intermediate member 79 is withdrawn when a punctuation key is struck, as described above, a tooth 104 snaps behind the pawl to hold the slide and the circuit breaker in the working position (Fig. 4). As a result, the punctuation key can return the universal rod 84 and the slide 81 to their rest position in which the slide 8r is stopped by a stop io5 which engages with a pair of guide blocks. The latter are attached to a foundation plate io7. From the above it should be remembered that the movement arm 78 is held in its working position by the snap 87 (Fig. 6) when the carriage executes its backward movement.

In order to stop the motor when the carriage is returned to its writing position, the circuit breaker 61 is automatically opened. This is preferably done so that a projection iog on the carriage detects a lifting piece io8, adjustable ei with a right margin adjuster iio (Fig is rotated (Fig. I to 5) and the movement arm 78 reaches the rest position. the first part of the backward movement of this arm 78 v # ranlaßt the pawl ioi to disengage from the intermediate member 79, so that this by the spring ioo in its rest position reaches the angle lever 85. the arm 78 then detects the angle lever 85 in order to move it to its rest position, counter to the tension of the spring 86 and 8o extract the intermediate member 78 from the gap, whereby the power circuit device is ineffective. i the right margin adjuster iio is adjustable in the longitudinal direction of the carriage so that it is adjusted according to the width of the desired margin on the left side of the worksheet, thereby changing the position at which the circuit breaker is to be opened when the carriage moves backwards to stop the motor.

A shock absorber or buffer, which can be designed in a known manner, is received by the edge adjuster and can be adjusted together with it. A tongue ioga strikes against it on the projection 76 of the carriage in order to hold it in its initial position. Furthermore, a device has been made to indicate to the clerk that the car is entering the return zone. This device advantageously consists of a bell 112 which can sound when the car enters the said zone. To achieve this, the arm 78 is equipped with a pin 113 which protrudes laterally from it and engages a lifting piece at the other end of the angle lever 1.5 , so that this is caused to swing out about its pivot point 116, thereby lifting the hammer I 1 7 causes. If the highest point of the lifting piece 114 is exceeded, the angle lever 115 falls back against the stop iig on which it usually rests, and due to the flexibility of the arm 118 by which the hammer 117 is attached to the angle lever 115, the hammer strikes against the bell 112. If desired, a spring can be used to assist in the return movement of the bell crank 115 . The pin 113 is seated on the member i2o which is rotatably attached to the arm 78 at 1.21 so that it can slide idly over the lifting piece 114 during the return movement of the arm 78.

At times it seems desirable to have the car return by the motor from any position * outside of the return zone. For this purpose, a special return button 1.22 is attached which, when struck, executes a rotary movement of the lever 12,3 around the pivot pin 14 and rotates the angled lever 124 about its pivot pin 125 with the aid of the 1:26 pin which is pushed forward by the button lever 123. and protrudes into a slot 127 provided at the free end of the angled lever 1:24. During this movement of the angular lever 1:24, a pin 128 sitting on it grips the arm 78 in order to rotate it into its working position (Fig. 5), whereby the intermediate member 79 and thus the pawl ioi, as described above, come into effect . After the intermediate member 79 and and the pawl ioi have been brought into effect, the key lever 1 23 detects the universal rod 84 in order to put it into action, whereby the slide rods 81 and 8: 2 are moved to close the current circuit device 61, thereby that the angle lever 95 of this current circuit device comes through the spring 97 in its working position. This will start the engine and return the car to its starting or writing position. Once this position of the carriage is reached, the lifting piece io8 is activated on the right margin positioner ii o 'in order to return the arm 78 , and accordingly the pawl ioi and the intermediate member 79 also return to their rest position, whereupon a return spring 130 comes into effect in order to move the slide rod 8: 2 back and accordingly to bring the bell crank 95 to swing out and to open the circuit breaker 61.

The universal bar 84, which has come into operation to close the circuit breaker 61, is designed so that it can only be activated by the punctuation key i i, the space key 37 and the special key 122. For this purpose, the universal rod 84 is provided with an upwardly projecting projection 131 so that it can be grasped by the relevant key lever. The main part of this universal rod 84 is deep enough to give the letter keys 12 a free path in their downward movement. The punctuation key ii, the space key 37 and the return key 122 can perform a different swing. Provision is made here that between the keys and the universal rod 84 lost movements of different sizes can be carried out in order to always move the universal rod by the same amount through one or the other key.

It appears desirable to avoid depressing any key when the carriage is in its motorized return motion. This is done with the aid of the locking bar 132, which extends across all key levers, so that it can be brought into its effective locking position with respect to hooks 133 on the key levers (Fig. 1, 2 and 4) when one of the punctuation keys mentioned ii or the space bar 37 or the special key 12: 2 is pressed. For this purpose, the locking bar is rotatably attached at 134 so that it can be made to swing out with the aid of the downward arm 135 - (Fig. 4), which is connected to the slide bar 82 by a rod T 36 . If the slide rod 82 is moved in order to close the stroke locking device, the rod 136 is pulled back, whereby the locking rod 13: 2 moves into its locking position under the hooks 133 (Fig. 4). The hooks 133 are made from one piece with the letter key levers 1: 2. However, the hooks 133 of the punctuation keys, the space bar and the special key are rotatable, attached to the levers at 137 , and are held in place by suitable springs 138 so that they can yield and allow the key levers to return to their normal position. when the locking bar 132 is in its operative position. If the struck key has returned to its normal or rest position, it is also held locked by the locking rod 132 and can therefore no longer be put into action until the carriage is in its. Returned to the initial position or his writing position and the stroking device is open.

Claims (2)

PATENT CLAIMS: i. Typewriter with automatic line switching or backward movement of the carriage by power drive, characterized by a device which is usually switched off and only takes effect when the carriage approaches the end of its path of movement, through which when certain keys are pressed (e.g. 1 1, 37, 12: 2) the line feed or the backward movement of the carriage is initiated. 2. Typewriter according to claim i, characterized by one of the specific keys (11, 37, 12 ?,) movable, the latter common drive rod (84) which remains unaffected by the letter keys when they are pressed down. 3. Typewriter according to claim i, characterized in that the device which can be switched off and on is formed by an intermediate member (79) in the linkage (81, 8 ?,) between the key and a current closing device (61) and the activation of the car from it Entry into a previously determinable zone takes place, as a result of which when a certain key is pressed (punctuation key ii or space key 37) the current is closed and the writing carriage is returned to its starting position. 4. Typewriter according to claim 3, characterized by a special locking device (101, 104) which prevents the current-closing device (61) from being opened until the returning typewriter has reached its starting position. 5. Typewriter according to claim 4, characterized in that the special locking device (ioi, 104) is triggered from the car. 6. Typewriter according to claim i, characterized by an adjustable member (77) by which a multiple letter spacing enclosing zone is determined, within which the carriage allows that the specific keys (punctuation key ii, space bar 37) the line break or the backward movement of the typewriter. 7. Typewriter according to claim 6, characterized in that the adjustable member (77) is attached to a margin stop. 8. Typewriter according to claim i, characterized by a device (132, 133) for locking all keys when one of the specific keys (1 1, 37, 1: 2-2) is pressed during the backward movement of the carriage. G. Typewriter according to Claim 8, characterized in that the device (132) for locking the keys with the linkage (82) between the current-closing device (61) and the keys (ii, 37, 12: 2) initiating the backward movement of the carriage or the keys movable by these Drive rod (84) is connected. ok Typewriter according to claim 8, characterized in that the device (132, 133) is held in the locked position by a special locking device (expediently the ioi, io4 mentioned in claim 4) until the end of the backward movement of the carriage. ii. Typewriter according to Claims 2 and 3, characterized in that one (122,) of the said keys causes the intermediate element V9) in the linkage (81, 8: 2 # between the key and the circuit breaker (61) to be switched on simultaneously when the drive key (84) is depressed 12. Typewriter according to claim 10, characterized in that the locking device (ioi, io4) is triggered by the mechanisms which open the circuit device (61) when the backward movement of the carriage is terminated.