DE1278835B - Line balancing auxiliary device for photocomposing machines - Google Patents

Description

Line balancing auxiliary device for phototypesetting machines The invention relates to a line balancing auxiliary device for phototypesetting machines with a Arithmetic circuit for the determination and visible display of values which are taken from the available line length (remaining line length) and the number and size of the Distances between the character groups are derived.

There is already known a photographic typesetting machine which is as follows works: Each character of the font used becomes arbitrary and unique assigned a certain quantized latitude value; likewise will for the distance a minimum value is chosen between two character groups. The width of the characters and the spacing between the groups of characters results in a Value D indicated by a measuring instrument. Also shows a second Measuring instrument the quotient of the value D, i.e. H. which is based on the Minimum distance between the character groups resulting in the remaining line length and a second value N, the number of spaces between the considered Corresponds to character groups. The operator thus sees what the gap increase would occur if she stopped writing at that moment. If the value N indicated by an ammeter is satisfactorily small, then solves an automatic adjustment mechanism as well as the imprint by means of a send button the end.

The disadvantage of this arrangement is undoubtedly the fact that none Free parameters are provided with which the operator can influence the value N. can, if you consider this to be too large in the interest of a uniform typeface or appears too small. For example, suppose that the value displayed to the setter N is relatively large and the next group of characters to be set is a longer one Number represents, which by their nature are not separated and therefore possibly can no longer be set in the line in question to compensate for it, so results There is a relatively large gap between the character groups in this line. It may therefore be desirable to leave a larger space between in the next line to achieve the character groups than it is possible through the constant set minimum value on the one hand and the existing character groups on the other hand when setting. It can also be required that individual lines are set with a particularly large distance between the groups of characters, to highlight them.

It is an object of the invention to provide a line-balancing auxiliary device for light setting machines, in which the disadvantages of the known photographic Setting machine can be avoided by adding at least one freely manipulable parameter is introduced, which affects the compensation of the remaining line length.

The invention is characterized by an adjustable voltage source for the optional generation of the distances between the groups of characters, analog computing voltage signals and a display device for visually displaying the information provided by the computing circuit Input of certain voltage values given by these distances analogous to the remaining line length analog signals. The operator can thus with the device of the invention select different interword spacing and check on a display device whether the resulting remaining line length gives a satisfactory typeface.

Such a line-balancing auxiliary device proves in particular for photocomposing machines as advantageous in which the characters in the machine by an optical system, since the distance between the character groups according to the selected enlargement scale and after must be adjusted to the overall impression of the typeface. The invention can can therefore be advantageously further developed by means of a step switch adjustable, emits a computing voltage signal analogous to the magnification of the document Furnishings.

In the device according to the invention, there are therefore adjustment options created, which allow the advantage of photocomposing machines over type casting machines to take advantage of the fact that the working method of the machine is minimal and maximum size of the spaces between the character groups is subject. Due to the information given by the display device, rather, the composer of the expediency of the interword spacing he has set and magnification, and the variation in these sizes Make the typeface better than was previously possible.

The invention is described below, for example, with reference to the drawings explained; it shows F i g. 1 is a circuit diagram of that part of a photocomposing machine, who controls the photographic apparatus, FIG. 2 a circuit for calculation the remaining line length, F i g, for a given interword spacing. 3 a circuit diagram of a binary stage with connected amplifier and relay, which Stage of the device according to FIG. 1 is controlled, FIG. 4 one in the device according to FIG. 1 used distance calculating disc, F i g. 5 is a circuit diagram of another Embodiment of a line-balancing auxiliary device, FIG. 6 and 7 single circuit diagrams to explain the arithmetic circuit according to FIG. 5.

The invention will be explained in connection with other features of a Collotype setting machine comprising a first keyboard unit shown in FIG. 1 is shown schematically, and the one control band for each to be set Lines generated, and a second machine, which is used for photography, runs through the previously produced control belt is controlled and thereby an exposed film generated on which the individual lines of the sentence as latent photographic images are included, which are then still to be developed. The keyboard machine has a Main keyboard 10 with a number of keys for selecting the different characters on, and also interchange switches are provided with the buttons in known Way work together to produce a binary selection code in the form of electrical pulses or to generate voltage surges on one or more of the seven choice output lines 12 can be forwarded. These lines are connected to the selection output lines via diode rectifiers 13 14, of which seven are also provided and those belonging to the first of eight input lines 15 lead, the working of a common coding and recording mechanism 20 control through which a paper tape 22 to be punched in a certain manner is passed through to create a permanent record of each character, which has been selected by actuating the keyboard 10 accordingly. All too characters belonging to a character group, namely uppercase and lowercase letters, Numbers, punctuation marks and the like, require a certain spacing according to their Widths. For example, the letter "m" obviously needs a considerable amount wider than the letter "i". To increase the adaptability of such Typesetting machines, it is also desirable to print the characters in the photographing machine to enlarge or reduce using a suitable optical system, and at Such optical changes must be possible by the same characters change the actual width occupied at different magnifications to be able to. This can conveniently be done by using the relative or unit width determined for each selected character and multiplied by an enlargement factor which is a function of the one made by the optical system at that time Magnification is so that the product of this unit width and the magnification factor a measure is the actual occupied by each selected character Broad. According to the present invention, the dimensions of the unit width and of the enlargement factors are selected such that the actual width of each character represented by a digital output pulse which is the actual width of the selected characters in picas and fractions of picas, the below Piclets are called, for sure.

In order to determine the relative or unit width of each selected character and to calculate the actual space that each character occupies at a certain magnification, the keyboard code output lines 12 are provided with seven isolation amplifier units 25, 25 a, 25 b, 25 e, 25 d, 25 e , 25 f connected, which in turn serve to preset the individual stages SC 1, SC 2, SC 4, SC 8, SC 16, SC 32 and SC 64 of a binary counter for the voter distance calculator. These stages can be, for example, the usual Eccles-Jordan or similar flip-flop stages connected in cascade. This counter has two functions, namely, first and foremost, the selection of the unit spacing information for each selected character, which consists of the input code through the above-mentioned isolating amplifiers, and, secondly, the cooperation with other facilities in calculating the actual distance value for the selected character.

The information about the unit width or the unit distance consists of a six-digit binary code in the form of different translucent lines on a continuously rotating distance code disk 30, which is attached to a rotatable shaft 32 driven by a motor 33. The code is formed in that transparent slits (or, conversely, opaque markings) are made on the disc 30 in each of the six code positions, and the information about the respective unit width is recorded by a short-term flash lamp 35 under the control of a Flash control unit 37 is ignited so that some of the six photographic cells 40 receive light, one of which is arranged in alignment with a respective code position of the disc. These photocells are connected to the isolation amplifiers 25a to 25f via six separate output lines 42 in order to set the associated stages SC2 to SC 64 of the counter in accordance with the selected distance code.

As a result, when a character is selected by pressing a key in the keyboard 10, a code corresponding to this selection is produced in the lines 12 and runs via the rectifier 13 and the lines 14 to the perforated tape input lines 15 in order to actuate the hole punch in such a way that on the Band 22 a perforation corresponding to the selected character is produced. At the same time, this selected code is fed to the isolation amplifiers 25, 25 a to 25 f via the lines 12 in order to set the counter to the identification code number. The unit spacing code information on the rotatable disk 30 is arranged in a complementary manner so that the unit spacing code for a particular character is separated from a fixed point on the disk by a number of digits which are counted when those digits are counted is complementary to the dialing code introduced into the voter counter.

The fixed point position, also known as the synchronization position is determined by a translucent synchronization mark 45 on a timing and calculating disc 30 (Figs. 1 and 4), which is on the shaft 32 is fastened in a very specific fixed position with respect to the bait disc 30 is and with a photocell 52 and a (not shown) light source on the opposite side of the disk 50 cooperates to make each revolution of the disks 30 and 50 to generate a synchronization pulse. This synchronization pulse runs via a line 54 to a separating circuit G 1. This separating circuit is passed through controlled a flip-flop circuit F 1 that it follows its state. If the flip-flop F 1 is in the first or the 0 state, then G1 is »closed« and does not pass on impulses sent to him; if, on the other hand, F 1 in its second State is, then G1 is "open" and lets incoming impulses through the line 54 to line 55 and thus to a second control flip-flop F2. F 1 is normally in state 0, with the blocking circuit G1 being closed, however, it flips into its state 1 um, if a trigger pulse is supplied to it via the line 57 from the keyboard 10 will. Such a pulse travels through this line every time through Depression of a key or in any other suitable manner a character is selected.

The timing disc 50 is also provided over its entire circumference in a different radial zone than that in which the synchronization marking is located, with pulse-generating markings which cooperate with the aforementioned light source and a photocell 60, such that timing pulses are generated in the line 62 and passed to a further blocking circuit G 2, which is controlled by the second flip-flop F2. Since F2 is usually in the 0 state, the blocking circuit G 2 is also normally closed, and timing pulses cannot pass through this blocking circuit unless F2 is switched by initiating a pulse from the line 55 via the blocking circuit G 1. If, however, F2 changes over to its state 1, G2 opens, and the pulses in line 62 run through G 2 and its output line 64 to the input of stage SC I of the dial counter, with a pulse in line 65 to the flip-flop at the same time F 1 runs so that it tilts back into its 0 position and the blocking circuit G 1 closes again. Further timing pulses now run through the blocking circuit G2 into the selection counter until it is completely filled.

If you z. B. assumes that the binary code for a particular selected Character is the number 0010100 (corresponding to the number 20 in the decadic system), so more pulses must be received in order to fill the dial counter 107, too at which point in time the counter is then set to 1111111. The next 108. Impulse clears the dial counter and causes an output impulse in its output line 70, which is connected to the input of a flip-flop circuit F 3, and at the same time runs a reset pulse through line 72 to flip-flop F2, so that this flips back to its 0 state and closes the blocking circuit G2. F3 is via a Line 75 connected so that it enables the operation of the flashlight control circuit 37 controls in such a way that it follows the state of F3. F3 is located normally in a state in which the flashlight control is turned off; when a pulse arrives from the output line 70 of the selection counter, F3 toggles um, and a pulse passes over the line 75, so that the flashlight control device the immediate emission of a flash light beam from the flash lamp 35 result if the distance code information is in the 108th position behind the synchronization or the starting position is aligned with the reading photocells 40.

The pulses generated by one or more of the photocells run via the output lines 42 and cause the selection counter SC 2 to SC 64 to be set via the isolating amplifier 25 a to 25 f, and these last six levels of the selection counter are now calculated in cooperation with the Calculating disk 50 shows the actual width occupied by the character selected at a certain magnification.

The calculation process for the distance continues in the following way: When the flip-flop circuit F3 tips over and the flashlight control unit 37 is actuated, a signal is also generated in the line 78 by which the normally closed blocking circuits G 2 and G4 are opened. The input to the selection counter is now via the blocking circuit G3 and the line 79, which receives pulses from the photocell 80, which cooperates with unit pulse generation markings on the disk 50, for example such a unit mark for each quadrant, ie four of them for each full revolution of the disk 50, is or are. The pulses generated by the photocell 80 consequently run through the line 82 and the blocking circuit G 3 and into the stage SC 2, where they collect and possibly fill up the last six stages of this counter, which are now set to a binary number equal to the unit width of the previously selected character, from the distance code disk 30, corresponds. The input of the blocking circuit G4 is represented by a photocell 85 for the piclets, which emits pulses via the line 86 to the blocking circuit G 4, and when this is open, the pulses run to the input line 87 of the line length accumulator, which is made up of twelve Composed of binary levels, which are designated with LC 1 to LC 4096. Each of the piclets input pulses to this counter represents a specific fraction of a pica, which is a common printing measurement of one-half inch.

Like F i g. 4 is a number of different Radial zones having characteristics are provided, of which the photocell 65 for the piclets can optionally be read. This dialing process takes place in that photocell 85 into one of any of these radial zones of the pulse generating markings 91 to 95 for the piclets is brought into alignment, so that this photocell between the successive unit pulses emitted by the photocell 80 a greater or lesser number of piclet pulses is emitted.

When the unit pulses are introduced into the selection counter and collected there this counter begins to fill up, and that for the complete filling of the The number of unit pulses required by the dial counter is equal to the complement value of the unit distance code set in the counter by the photocell row 40 is. When the last six levels of the dial counter from the unit input via the Blocking circuit G 3 are filled, the next unit input pulse overflows line 70 to F 3 causes this flip-flop to tip over and thus close the blocking circuits G3 and G4. The total number of pulses passing through the trap circuit G4 are fed to the line length collective counter during this period thus represents a digital input, the sum of which equals the entire actual distance occupied by the selected character and that information is in this way for each selected character in the line length counter stored, after which this memory value then arriving distance information added so that a sum of the total distance is formed, the occupy the individual characters put together in one line.

In a similar way, the typesetter presses the space bar of the keyboard every time a word space is to appear in the line to be set, whereby he closes a switch through which the output line 100, which is connected to the line 107 via the auxiliary keyboard 105, a pulse is running: this line transmits input pulses to the first stage of a word distance counter with six cascaded binary stages WC 1, WC2, WC4, WC16 and WC32. In this way, this counter forms the total sum of the interword spaces contained in the set line.

For reading the information in the line length collective counter and in the Word spacing counter is each stage of this counter via a subsequent amplifier connected to a relay for actuation of the same. A typical arrangement a binary stage with the following amplifier and relay is shown in FIG. 3 shown, which also the reverse connection between the successive, cascaded Stages shows. This arrangement. is met for all levels of these two counters, with only a few noticeable exceptions.

Like F i g. 3 shows, the binary stage has an input connection 110 to an input capacitor 112 connected to both cathodes of the input double diode is connected, which can be of the tube type 6AL3, for example. The anodes the double diodes are connected to the anodes of a double triode. for example the type 5963, connected as shown in a usual Eccles-Jordan circle is provided. These anode circuits are also using over 100mmF capacitors forward and reverse output contacts 115 and. 116 connected for this level, which are optionally connected in this way via the relay-controlled control switch 120 can be that they deliver pulses on the input line 122 of the next stage. In the usual way, one or the other side of the double triode is conductive when the other side is not conductive, and this transition from one to the other Status occurs when each one arrives. Input pulse on the input capacitor 112. In this way the grids of the double triode are alternating and reversed, applied to a somewhat positive voltage, and a subsequent connection 125 leads to the grid of a triode amplification tube 127 which feeds the coil of a Relay 130 controls. When the triode 127 conducts, the relay 130 is switched on and closes its contacts, so that now a circle through the contact 132 and a Neon tube 133 to a particular output lead in the eight-channel output matrix which controls the hole punch 20 is closed.

This circle will only be completed when the end of the line located in the record is reached, and therefore the outputs of the line length collective counter and the word spacing counter schematically as output lines 135 and 136 (FIG. 1), which lead to the end of the line control 140. Therefore, although the relay 130 of each stage of these counters several times during the setting of a line a-. and can be switched off, only according to the final settings of these relays Completion of the line used to complete the reading circles that then cause the encrypted information to be punched into the perforated tape 22, in accordance with the complementary value of the total spacing of all characters from the line length collective counter (i.e. the remaining distance that is based on the spaces between words must be divided), and the direct reading of the number the interword spaces in this line from the interword counter.

To the typesetter operating the keyboard 10 a display for the remaining Line length, a setting indicator circle and a reading option are provided, to determine and display the remainder of the line length as the setting progresses. Since the input of the line length collective counter is the actual, from the characters corresponding to the occupied width, an arbitrary unit width becomes accordingly the same magnification factor that was used when determining the actual Length remainder was used. The remainder of the length is represented by Control of the between earth connected to one side of the meter 150 (Fig. 2) is, and a control line 152 to which the other side of this measuring device is connected is flowing stream. In practice, the meter 150 may be a milliammeter whose scale is calibrated to remaining picas for an immediate reading to allow the excess line length in picas to be applied to the one line contained interword spaces must be divided. The last nine steps of the line length counter, namely the stages LC8 to LC4096, are in addition to the Reading relay 130 is provided with setting indicator relay 160, the contacts of which make the connection of resistors 161 to 169 between control line 152 and a + 225 volt supply line 170 taxes.

Since the remaining length measuring device is only required when the end of a sentence line is approaching, a bias voltage is provided in that the control line 152 is connected to a -75 volt supply line via a bias resistor 173. Similarly, the six stages of the word space counter are provided with sentence indicator relays (the same as relays 160) that control the connection of six resistors 181-186 to a line 188. This line is connected to tap 190 of a potentiometer 192 which has taps between resistors of a predetermined size, for example the resistance values shown in the drawing, and on one side to ground and on the other side to a -72 volt supply control 195 of variable voltage is connected, which in turn is connected to a source of negative DC voltage. By adjusting the device 195 , the bias voltage is set to a certain value, which is proportional to the unit value that is to be given to the inter-word spaces. In the illustrated embodiment, 72 volts is the setting that corresponds to a word spacing of eleven units. The tap 190 is set to the correct setting for the selected magnification, the photocell 80 at the same time being set to a specific radial zone for the reception of piclets.

The meter 150 is calibrated to indicate how much actual line length remains that can be used for characters and spaces between words. When the indicator needle reaches the number zero, the line is balanced with word spaces that are equal to the setting on the voltage adjustment device 195. The measuring device 150 is subject to three different current effects at all times: 1. the current through the relay contacts in the word spacing memory in the direction shown, 2. the current through the relay contacts in the remaining length memory, also in the direction shown, and 3. one Preload in the direction shown.

A numerical example will now be given below. If the Voltage changing device 195 to a word spacing value of eleven units (about 1 / s on) and set the magnification dial to 12 points is, it results under the assumption that, as shown, two picas in the distance memory remain and six spaces between words have been provided, the following mode of action: Because one third of a 12 point one equals 4 points and six spaces between words are present, a current value of 24 points results in the direction indicated flows through the meter. Also, since 2 picas are equal to 24 points, how flows indicated, a stream of 24 points in the opposite direction through the meter. The current corresponding to the word spacing equals that of the length that remains free corresponding current, and if it weren't for the bias, it would The measuring device shows the value zero.

In this example, when the operator finishes setting when If the meter reads zero, the photographic machine will equalize the line and forms word spacing of about 1 / s. If the operator has spaces between words narrower than 1 / s a desires, so he can turn the voltage changing device on set a smaller unit value for the word spacing. This causes the current reduced by the relay contacts of the word spacing memory, whereby the Indicator needle moved to the left, indicating that there is now a larger space for accommodating more characters is given.

Because the remaining length is given in picas and the spaces between words only to be recorded in their number, it is necessary to use the spaces between the words to convert to picas so that they are subtracted from the remaining free picas can. This is done through the group of resistors 192 which act as the magnification selector are shown. In this way all currents flowing through the meter are directly proportional to the pica number.

In the F i g. 5, 6 and 7 is another type of display apparatus the remaining line length. In this apparatus are variable Voltages generated as analog signals according to what is assumed by the characters Space and the space that remains free as well as the space between words in one certain magnification of the occupied space.

In this modified apparatus design, the fourth to ninth stages of the line length counter are connected via amplifiers 219 to 224 in such a way that they control six relay-operated changeover switches 225 to 230, each individually. These relay switches in turn control the tapped secondary winding of a transformer 235, the primary winding of which is connected to a suitable AC voltage source 236 of constant voltage. As the drawing reveals, when one or more of the relays 225 to 230 are switched on, more or less of the secondary windings of the transformer 235 are switched into a connection between an output line 238 and earth.

The line length counter LC is set to a predetermined line length, and pulses supplied to this counter strive; this counter to the predetermined To fill the value, and when the counter value approaches the set counter capacity the complementary value of the counter value is the same as that which is still free in the line Space. In the illustrated embodiment, the Line length counter a capacity of 64 pica, divided into increments of 1 / s4 pica.

When the line length counter fills up towards the end of a line set, the last three levels of this counter are set to 1, and when the fourth to ninth levels of this counter are filled, the setter is within 8 picas of the end of the line. When the relays 230, 229 and 228 are switched on in this order, the space still free in the line becomes smaller in the size of the binary sequence 4, 2, 1. If, for example, it is assumed that the spacing mechanism has reached a point where exactly 8 picas of free space remains between the current position and the end of a line of a predetermined length, the next pulse which reaches the fifth stage of the counter causes a Signal through amplifier 219 so that the secondary winding is connected between ground and output line 238 as a result of the action of the associated tap.

If (see Fig. 3) all relays 225 to 230 in the viewing direction according to FIG. 5 are switched to the right, so are all Secondary winding parts of transformer 235 connected in series with the others, so that the maximum inducible secondary voltage between line 238 and earth occurs. For example, if the primary winding of this transformer has 1920 turns and is fed from a 120 volt AC source, then in is this circuit, the potential of the output line 238 32 volts when the through the Relay 225 controlled tapping eight turns, controlled by relay 226 Pick-up sixteen turns and the relays 227 to 230 32 or 64 or 128 or 256 turns, as shown in FIG. 6 is registered.

When the spacer moves another eighth of a pica, the fifth stage LC 16 of the counter 88 switches over, the relay 225 switching off the eight-turn secondary winding, after which the output voltage in the line 228 is then 31.5 volts, the one remaining free line lengths of 7 7 / s pica. When the spacer moves another eighth of a pica, the fifth stage of the counter reverts to its previous state and the sixth stage LC32 toggles so that relay 226 turns off sixteen turns of the secondary, while relay 225 turns off controlled eight turns back on in the circle. The output voltage is then 31 volts, which corresponds to a free line length space of 73/4 pica.

From the above example it can be seen that when filling of the counter LC at the end of the line the voltage on the output line 228, respectively drops by 1 / z volt per eighth of a pica.

The voltage in the line 238 is thus an analog value of the entire remaining line space in picas; this line leads according to FIG. 5 to a single coil transformer provided with several taps and designated as a whole with 240, namely via a variable input connection 242. The transformer 240 is divided into two partial windings, the upper winding 243 being divided equally into 128 turns per tap, with the exception of the lowest , first tap 244, which has 512 turns. The lower winding 245 is divided into three tapping sections of 32 turns each and thus has a total of 96 turns. That is, the range of the single coil transformer 240 is from 4 to 16 points. The highest voltage attainable on the secondary side of transformer 240 is 144 volts, and if therefore the maximum voltage of 32 volts from transformer 235 and line 238, corresponding to 8 picas, is conducted to the 4-point connection of transformer 240, then it would be 144 volts appear on secondary output line 248, which is equal to 24 in at 4 points, or approximately 6 volts per one. The voltage on the output line 248 is therefore an indication of the number of a remaining free in the row.

According to the other side of FIG. 5, the word spacing memory counter WC is connected to each of its six stages via amplifiers 250 to 255 with a group of six relays 260 to 265, which control the secondary part of another transformer 267, which is provided with several taps, whose primary part is connected to the 120-volt alternating current source 236 is connected. If the primary winding of the transformer 267 has 2000 turns and the secondary winding belonging to the relay 260 has 100 turns, the voltage in the output line 268, if only this secondary winding part is switched on in this line, is 6 volts, so that in the line 268 at Each word spacing pulse fed to the counter WC produces a 6-volt signal, and if the secondary windings controlled by the relays 261 to 265 have 200, 400, 800, 1600 or 3200 turns, the voltage signal in the output line 268 changes in size depending on the number of spaces between words.

It can be seen that the output ratio in both lines 248 and 268 is 6 volts per one. Therefore, if the transformer 265 is shown in FIG Switched way, the highest potential of the line is 268 378 volts, and at 6 volts per one this gives a capacity of 63 one. This output voltage is a high impedance potentiometer 270 with even resistance between forwarded to the taps. When it is assumed for purposes of illustration that each Word space takes up one third of a. (As is usually the case is), so if the tap 272 is set so that the potential at the tap is equal to one third of the value of the potential on potentiometer 270, the lead 273 a potential, the size of which corresponds to the number of interword spaces in the line and corresponds to the space occupied by these spaces between words.

A high impedance 275 voltmeter (30 megohms for example) is between lines 248 and 273 switched, and the potential difference indicated by this voltmeter between these lines provides an indicator of the number of remaining in the line free ones that have not yet been taken over by set characters. By Observing the measuring device 275, the typesetter can determine the space that to balance the line with the spaces between words contained in this line must be divided. This reading is particularly useful for the typesetter when approaching to the End of line useful; it allows the typesetter, for example a decision as to whether or not there is room for a short word in the line. Of course, if the meter 275 reads zero, i. H. so there is no longer a potential difference between the lines 248 and 273, the relevant line completely filled. This zero setting can be done during the setting one row can be used in the following way: Another voltage divider 280, such as one with sliding contact, is between lines 248 and 268, and the tap 282 of this potentiometer is, as at 283 is indicated schematically, driven by a reversible motor 284. the Line 285 coming from tap 282 is connected to the primary winding of a transformer 287, the other end of which is connected via a line 288 to that of the single-coil transformer 240 incoming line 248 is connected. The secondary winding of the transformer 287 is attached to a conventional zero and phase circle, shown schematically at 290 is connected, and this circuit controls the motor 284 via lines 292. The The arrangement is such that as long as the circuit 290 passes through the transformer 287 receives a potential difference, the motor 284 is running and the tap 282 in that Shifts direction that this potential difference is zero.

The sliding contact 288 therefore follows the line setting and generates a visual indication on a scale 300 by moving a pointer 302 along it Scale shifts. This pointer can be conveniently attached to sliding contact 288 be attached, as shown in FIG. 5 is shown schematically to the desired To give an indication of the progression of the sentence.

Claims (2)

Claims: 1. Line compensation auxiliary device for photocomposing machines, with an arithmetic circuit for the determination and visible display of values, which from the available line length (remaining line length) and the number and Size of the distances between the character groups are derived, g e k e n n -z e i c h n e t d u r c h an adjustable voltage source (195) as an option Generation of the distances between the groups of characters, analog computing voltage signals and a display device (150) for visually displaying the data generated by the computing circuit when entering certain voltage values analogous to these intervals, the Remaining line length for analog signals. 2. Line balancing auxiliary device according to claim 1, characterized by an adjustable via a step switch (190), a dem Enlargement of the pleadings analogue arithmetic voltage signal output Furnishings. Documents considered: German Patent No. 848 913; U.S. Patent No. 2,682,814; Handbook of Automation, Computation and Control, Vol. Z, 1959, pp. 22-05 to 22-09; Electronic Engineering, June 1947, pp. 178 bis 180.