DE729611C - High-speed typewriter - Google Patents

Description

High-speed typewriter Typewriters have already worked through special arrangement of buttons and by providing the possibility of simultaneous Pressing several adjacent keys in certain combinations Ease of use of the machine and the speed of keystroke sought to increase.

The present invention resides in a novel group wise summary the buttons with the provision of contact groups controlling the selection of the type carrier, which are made effective by pressing the keys of the various key groups will. The novel arrangement according to the invention is that each finger both the right and the left hand, as is known per se, a special one Key group is assigned and that the selection of the different type carriers dominant contact groups in such a way under the control of two of the same finger the key groups assigned to both hands can be set that by actuation of a finger of one hand or of both hands and the resulting striking of one or any two adjacent keys of the key group assigned to the finger Type carrier for the stop can be selected.

With such an arrangement of keys and their assignment in groups to contact groups that can select any type carrier, requirement it just of learning the type selection by pressing a Fingers of one or the same finger of both hands, depending on the number of existing key groups with a keystroke of one hand or both; hands one: select number of weirs of different types at the same time, which by the mechanical Set up the machine one after the other to reach the stop. With the appropriate Arrangement of buttons, e.g. B. the known manner in four groups for index finger, Middle finger, ring finger and little finger of each hand and a middle group of keys for the two thumbs, one can use four at the same time with hands practically stationary Select the types to be attached from the entire range of type carriers and then one after the other take -z-uni imprint.

This results in an extraordinary reduction in the number the necessary buttons and the ability to select several at the same time Type carrier an acceleration by a keystroke of the different type groups of work that is not achievable. if each type-tr older selected for themselves and must be struck.

Preferably, for the selection of types, the Types for punctuation marks i only four groups of keys for the four fingers of both hands provided, while the thumb controls the operating processes (circuit to large or small letters, space switching, etc.).

In addition to the contacts controlled by the key groups, there is also the provision of facilities for the temporal monitoring of the coming into effect the type carrier selected by a type stop for printing when printing should take place in a machine with a paper trolley moving step by step. According to the Invention are the time controller, which the timing of the processes in the Machine master, preferably arranged so that from the by a keystroke selected types first the type selected by the index finger for printing then through the middle finger, then through the ring finger and finally the type selected by the little finget. If only forefinger keys were struck the operation of a timer or the coupling of a motor for there is no need to operate one.

In connection with the requirement of temporal mastery of the Imprints of types selected by a keystroke become the same pressed keys are preferably locked in the subscript, with this locking However, it only takes effect when the machine is ready for operation is located.

The invention is illustrated on the accompanying drawings, namely in .l ~ ig. i to 5 by several forms of "keyboards for machines according to of the invention and in FIGS. 6 to 1.I by an embodiment of a typewriter. which by those in egg, -. 5 keyboard shown can be operated.

Egg-. i illustrates a keyboard. which using the four Finger and thumb of both hands choosing from five types with one keystroke allowed. For the triggering of special control effects by the index finger are on the inside of the two keyboard sections for the four additional fingers Control rails provided.

Fig. = Shows a keyboard which differs from that shown in Fig. I only differs in that with her between two to be struck by the thumb Rows of buttons still a switch rail is provided, which the task of the circuit can be assigned to the printing of large letters.

Fig. 3 differs from the keyboard of Fig. I by the provision of shift rails on both sides of the thumb buttons. in front of which the one as an intermediate space switch rail and the other can serve the purpose of switching to large letters.

Fig. D. shows a somewhat simplified keyboard with only four groups of keys to be struck by the four fingers of the hands for simultaneous operation Choice of only four types and three additional thumb-clicks Keys for activating machine functions, e.g. B. optional circuit uppercase and lowercase letters, spacing and blocking of those made Circuit settings.

Fig. 5 shows one of the Fig. D. similar keyboard with increased thumb keys for additional machine functions, especially in reverse switching, feedback of the cart and tab circuit can exist.

FIG. 6 is a sectional illustration through a keyboard according to FIG. 5 and the contact and associated timing system operated by this for a Typewriter.

FIG. 7 is a plan view of FIG. 6.

Fig. 8 shows the assembly of a keyboard according to Ei-. 5 with a Typewriter. Fig. G is a single representation of the timing controller in one Axial section.

FIGS. 10 to 12 are different sectional views of FIG. 13 shows a side view of a row of keys assigned to a finger with its locking and release linkage.

Fig. 14 is an operational circuit diagram of the typewriter.

To explain the shapes of keyboards shown in FIGS is generally to say the following: The keyboards have certain - from the essence of the Invention resulting consistent features.

Each of the illustrated keyboards has three sections, viz a left section to be operated by the four fingers of the left hand Keys, a right section for the four fingers of the right hand and a middle section Section for the two thumbs. Each of the four fingers are in particular three in assigned to a row of keys one behind the other, whereby .the rows of keys so lie next to each other that the four fingertips when the fingers are in an unconstrained position each hand over the middle keys of the key rows assigned to them. With a slight forward or backward movement, the two end keys of each row of keys can can be grasped by the fingertip.

For each of the keyboards shown in FIGS. Z to 5 it is assumed that that the two innermost, one finger i including the thumb) assigned Rows of keys are used to select the first type of a type group to which connect the types to the right of it in the typeface.

For example, in the keyboard of FIG. Z, the keys a, b, c and keys i, 2, 3 to be struck by the left thumb serve to select the first letter of a word. The second letter of a word can be done by striking the keys d, e, f or q., 5 and 6 in various ways with the index finger of the left or right hand. The fifth letter of a word is selected by pressing one of the keys in, x., O and 13, 14, 15 with the little fingers of both hands. The middle keys are used to select the first letters of a word and the keys in the two lateral groups furthest outwards are used to select the end letters of a word to be written down. If z. B. the word BLACK is to be written, then the two thumbs select the type B , the two index fingers the type L, the two middle fingers the type A, the two ring fingers the type C and the two little fingers the type K. that two fingers act on three keys each and! Hit these in different connections, in such a way that either only one or two or three or four of the six keys are hit with each attack, one of several letters or a number or a punctuation mark can be selected for printing each time.

The keys denoted by numbers in the figures are replaced by the Right hand finger struck while holding the lettered keys be struck by the fingers of the left hand. The buttons each from above downward row of three buttons on the right-hand side are in Combination with keys of the corresponding row of keys running from top to bottom posted on the left side.

Two special, rail-like buttons S r and S 2 are used to select less common types. These rails are next to the rows of keys actuated by the index finger and are simultaneously with the keys belonging to these rows are struck.

The fingers of the right hand usually rest over the keys -2, 5, 8, iz and r .., while the basic position of the left hand is that in which the fingertips are over the keys b, e, k, t, and fa are located.

The words are written exactly as they are pronounced in groups of five letters or less, or it is also written down of the syllables forming the words, those in the direction from left to right adjoining letters selected by the fingers of the right hand that the rightmost finger is the leftmost Selects letters.

The keyboard shown in Fig.2 also sees the possibility of Distinction between uppercase and lowercase letters is made for this reason equipped with a special selector rail 16 for large letters, which between the two rows of keys struck by the thumbs of both hands will. Since all sentences begin with a capital letter, the first letter is a word is often a capital letter. As the first letter of a word through the keys to be struck by the thumb is selected, it results when at the same time with the key corresponding to the first letter or keys between the rail 16 lying on the keys to be struck by the thumbs is struck, without further ado that the letter in question is printed as a capital letter, without having to print capital letters at the beginning of a sentence or word a special event needs to be met.

Apart from the additional arrangement of the rail 16 for the selection capital letters, the keyboard of FIG. 2 corresponds to that of FIG. In both cases it is thought that five letters of a word at the same time can be selected on a single keystroke. If a word is more than five and contains no more than ten letters, then it would be a double keystroke and for a word with more than ten letters, one more for every five letters Keystroke ztt have done. As a large fraction of all words that occur only have five letters or less and another notable fraction the words do not have more than ten letters, so the arrangement results. Which allows you to select five letters with a single keystroke. without Another very quick spelling, which makes it possible to write directly after dictation to prepare a hard copy.

The key test can be left blank or with imprints such as z. B. letters or numbers.

The keyboard shown in Fig. 3 is the keyboards of Fig. I and 2 somewhat similar, but in distinction it fully shows the two mentioned Keyboards a gap rail 17 on the right side of the two through the Rows of keys to be struck with thumb and a selector rail 16 'for large letters on the left side of these two rows of keys. The Zwischenraunaschielle 17 can with the right thumb when you hit keys 1, 2, 3 or by yourself be posted. The latter comes into question when the thumb struck Keys should print types that belong to a long word.

The selector rail 16 'for the large letters can be struck by the left thumb at the same time with one of the keys a, b or c to select not only five letters, or it can also be operated by itself, while a combination of the keys is operated with the right thumb i, 2 and 3 is posted. The keys a, b and c can be struck independently of the rail 16 'if a word is not to be capitalized or if the keystroke is used to write the second half or the third third of a long word. This keyboard design with a space key offers the possibility of simultaneously switching between spaces with a single keystroke. Both. "Keyboards of FIGS. 1 and 2 must be satisfied with <1-r selection of four letters with one keystroke, if a gap switching is to take place.

Another advantage of the keyboard of FIG. 3 is that the special space key 17 makes the space connection independent of the actuation of a key combination. The combined all-hitting of keys 2, 3, a, v etc. can be used for a different type selection or another control effect. It also means an advantage. when the choice of a space switch center is concentrated in a rail instead of making it dependent on the hitting of a key belonging to one of five key sets.

The keyboards shown in FIGS. 4 and 5 have a fundamental In accordance with the keyboards of FIGS. 1 to 3, various deviations in detail on.

The keyboard of Fig. 4 has only four double sets of three keys each all place of the five double sentences of the keyboards explained. The special rows of keys for the two thumbs have been dropped and by keys with a special purpose, that have nothing to do with the type selection is replaced.

It plays an important role in the formation of the keyboard. in what attitudes words of a certain length occur in the language for which the machine is to be used. Detailed investigations have been carried out on this, the result of which is reported in a book by Godfrev Dewev, concerning "Relative Frequencv of Eilllish Speech Sounds". yFrom the established results, the following may be cited: Number of letters frequency of in a word word usage 1 3.275 r9,088 3 22.685 4 15.6o8 5 8.125 6 3984 7 2.849 8 1, .t67 9 952 10 394 il 139 12 78 14 39 With the predominant number of short words with up to four letters, the keyboard of FIG. 4, which only allows four letters to be selected by a keystroke, is evidently quite powerful. Since with this keyboard the thumbs only serve to trigger control effects in the machine, namely by hitting the key 33 a switch to large letters, by hitting the key 34 a block for the selected type of letter and by pressing the key 17 'to bring about a space circuit, so also takes into account the fact that the thumbs are not as dexterous as the rest of the fingers of the hand, which is why, from a practical point of view, it is advisable to assign the thumb to a simpler activity than the rest of the fingers. When this happens, the control of the keyboard is also made easier and the working speed is also influenced favorably.

To create a keyboard with the highest-medium speed can be operated, it is above all necessary to determine the ease with which the 35 combinations can be selected at the keystroke, the with the assignment of 2 X 3 buttons each to the corresponding fingers of the two hands are. Certain basic requirements can be made: 1. Use one hand is easier than using both hands at the same time; 2. the the right hand is generally more skilled than the left hand; 3. Buttons which are in the basic position of the hands under the fingertips are easier to hit as keys, to the stop of which the fingers are moved out of the basic position Need to become; 4. Less movement of the fingers out of the basic position is easier to do than a larger movement of the head; 5. It's for one Typist a little easier to keep his fingers away from himself than toward himself move.

With regard to the keyboard shown in FIG. 4, it is assumed that the basic position of the fingers is that in which the fingertips are above the keys 22, 25, 28, 31, 2 b, 2 e, 2 La, 2 k , and that the thumb tips in the basic position are above the gap rail 17 '.

The keys 21, 22, 23 and 2 a, 2 b and: 2 c of the keyboard of FIG. 4 can be viewed as a key set consisting of six keys, which is typical for operation with two fingers. Under this prerequisite and taking into account the assumptions no. 1 to 5 made above, the following ranking results in the ease of operation of individual keys and key combinations on the keyboard of Fig. 4: Degree of service ailments ease buttons I 2b 2 22 3 22-2 b 4 2a, 2b 5 2 b, 2 C 6 21, 22 7 22, 23 8 22-2 (b, 2 b g 22-2 b, 2 c 10 21, 22-2 b 11 22, 23-2 b 12 21, 22-2 (b, 2 b 13 22, 23-2b, 2c 14 21, 22-2b, 2C 15 22, 23-2 a, 2 b 16 2a 17 2C 18 21 23 20 22-2 a 21 22-2 C 22 2I-2 b 23 23-2 b 24 21, 22-2 CL 25 21, 22-2c 26 22, 23-2 C6 27 22, 2,3-2c 28 21-2 a, 2 b 2g 23-2 a, 2 b 30 2I-2 b, 2 C 31 23-2 b, 2 c 32 2i-: 2a 33 23-2 C 34 21-2 C 35 23-2 a. The frequency of occurrence of letters, punctuation marks and machine control processes, calculated in terms of iooooo 'places, can now be combined with the degree of ease of use for keys that have been pressed. It should be noted that the gap shift is the most common control operation. This has to do with the fact that there is a space switch after each word and two space switches between: two: consecutive sentences. Looooo word spaces, increased by 5446 sentence spaces, together result in 105446 spaces, each of which corresponds to a stop of the rail 17 'in the keyboard of FIG.

The switching to capital letters for the first letter can be determined with regard to the frequency with which it occurs using the following addition calculation: Start of sentence. . . . . . . . . 5446 Proper names . . . . . . . . 6404 Salutation, first name ... 6404 18254 For each of these switchings, the key 33 of the keyboard of FIG. 4 must be struck.

The frequency of the various small letters and punctuation marks and the keystrokes corresponding to them for 100,000 words on the keyboard of FIG. 4 results from the following compilation: Type or frequency of the afflicted Punctuation marks occurrence buttons e 36,313 2 b t 31.623 22 0 25304 22-2 b a 23,576 2a, 2 b h 24780 2b, 2c n 19.7 8 8 .21, 22 i 19.329 22 23 s 15.21 8 22-2a, 2 b 14.205 r 22-2 b, 2 c d 9951 2 1, 22-2 b 1 9.602 22, 23-2 b f 8.713 21, 22-2 a, 2 b. w 7,897 2 '23-2 b 2 c u 7.404 21, 22-2 b, 2 c m 6.595 22. 23- 'a, 2 b y 6.207 2 a Comma 5,951 Point 5.275 2 I. c 5, o14 23 b 4,473 22-2 a g .j., I 6o 22-2 C p 3.024 21--2 b v 2.526 23-2 b Hyphen a, 416 21, 21-2a Quotation marks 2,216 21, 22-.2c- ki, 566 22, 23-2 a Apostrophe 935 22, 23-2c Underline 540 2i-2a, 2 b Semicolon 442 a3-2 a, 2 b Question mark 330 21-2b, 2C Exclamation mark 304 23-2 b, = c 248 2I-2 a j 191 y3-2 c (1 121 21-2C z 39 -a3-2 a In the table above, the nine most frequently occurring punctuation marks are assigned to the `fasts to be played with the index fingers, while the other, less frequently occurring punctuation marks and special characters are assigned to the keys to be played with the middle fingers, as will be specified in particular.

It is also still closed. Mention that type selection, as indicated as achievable by the index finger keys 21 = 2, 23, 2 a-, 2 b, 2 c , can also be made by hitting the corresponding keys in the rows of keys assigned to the other fingers. For example, the letter s can also be written by hitting the keys 25 and 2 d, 2 e by means of the ': middle finger and the letter j by hitting the keys 27, 28 and 29-2h by means of the ring finger and the letter -itt by hitting the keys 31 , 3 = and 2j, 2k can be written using the little finger.

If the Shift key 3.4 is pressed, then capital letters and digit types selected. The frequency is hereby disregarded take into account the occurrence of the various capital letters and digits, because key actuation is identical for upper and lower case letters the overriding point of view. Since the capital letter type O corresponds to the digit type o matches, all types of digits can be used in conjunction with pressing the shift key are printed because the 26 major letter types together with the number types i to 9 result in a total of 35 types, which is the number of combinations of the keys of two rows of keys, each consisting of three keys, if from each Button row, one or two adjacent buttons can be selected each time. In the case of a keyboard according to FIG. 4, there is therefore the possibility for each pair of fingers selecting a digit so that a four-digit number appears on a keystroke can be written, which is a decided advantage over keyboards according to FIGS. i to 3 means where digits have to be written individually.

The key combinations for selecting the capital letters and numbers are compiled for the keyboard of Fig. 4 in the following table: Type Pressed keys E 33 and 2 b T 33-22 O 33-22-2 b A 33 - 2a, 2b H 33-2b, 2c 33-21, 22 I 33 - 22, 23 S 33 - 22-2 a, 2 b R 33 - 22-2b, -> c D 33-21, 22-2 b L 33-22, 23-2 b F 33 - 21, 22-2 (b, 2 b 33-22, 23-2b, 2C U 33 - 21, 22-2 b, 2 C @I 33-22, 23-2 a, 2 b 33 - 1 33 - 2 c 2 33 - 21 C 33-23 B 33 - 22-2 a G 33-22-2 c 33 - 2I-2 b 33 - 23-2 b 3 33-21, 22-211 33-2 1 , 22-2C h 33-22, 23-2 a 5 33-22, 23-2 c 6 33 - 21-2 a, Z b 7 33- 23-2 a, 2 b 8 33 - 2I-2 b, 2 C 9 33 - 23-2 b, 2 c K 33-21-2a 33 - 23-2 O 33-21-2c 33-23-2a As stated earlier, certain infrequent punctuation marks and special characters can be displayed under control of the keys that are struck by the middle fingers. These characters can be selected by keyboard shortcuts similar to the combinations selected by the index finger to represent common punctuation marks. The special key combinations for the less common punctuation marks on the keyboard of Fig. 4 are as follows: Signs often-battered Riding "fast Colon 2i8 2 f Bracket on 122 24 - to 122 24, 25-2d 76 2-1, 25-2f 23 25, 26-2f f 16 2.I-2 d, 2 e 13 26-2 d,? e The keyboard shown in FIG. 5 is similar to that shown in FIG. 4, apart from the fact that three additional keys are provided for the thumbs in addition to the three keys in the keyboard of FIG. These three other keys relate to reverse switching (key 35), carriage return (key 36), tab switching (key 37). In conventional typewriters, these control keys are provided at different locations, while in the keyboard of FIG. 5 they are close to one another and are assigned to the thumb for actuation.

From the preceding description it can be seen that the 3o keys or or rails, which are present in the keyboard of FIG. 5, can be used to write `Vorte with a typewriter. Referring to Figures 6 and 7, there is a keyboard as discussed above; illustrated in a device which .serves for remote control of a typewriter. The buttons close contacts which are electrically connected to solenoids, e.g. B. I i and Cc (Fig. 8), are connected, which actuate key levers of an ordinary typewriter. In Figure 8, a machine shape is indicated in which the keys are housed together with the writing mechanism in a housing. The remote control device for typewriters shown in FIGS. 6 and 7 will, however, first be described because the illustration in these figures is more complete than in FIG. B.

The device rests on a base plate 56 and is of a housing 57 enclosed. The keyboard frame includes a top plate 58 and a bottom plate 59, which the two plates are connected to one another by spacer bolts 6o are. The base plate 39 is fastened to the base plate 56 by six support bolts 61.

The two keyboard mounting plates 58 are provided with slots in order to guide the eight rows of key shafts and the shafts of the six other keys which are arranged in the middle of the keyboard. On the key shafts coil springs are placed, as z. B. for the key shaft 5 c from Fig.6 can be seen. This helical spring rests with its lower end against the lower frame plate 59 of the keyboard and finitely with its upper end against a shoulder on the key shaft, so that this is usually held by the spring 62 in the upper position. A lateral projection 63 on the lower end of the key shank forms a stop, which supply the upward movement limits of the key shank. The slots 64 in the lower frame plate 59 are long enough to allow the lower end of the key stems to pass through when the keyboard is being assembled. But after all key shafts have been inserted into the gesture plate, the key shafts are adjusted by a locking plate 65 in the slots so that the lugs 63 engage under the edge of the slot so that the upward movement of the key shafts is limited by the projection 63 acting as a stop. The locking plate 65 is firmly connected to the frame plate 59 by nuts 66 on the ends of the spacer bolts 6o.

Each key shaft is offset near the upper end at 67, so that when the key is struck, the shoulder 67 rests on the upper frame plate 58 and limits the downward movement of the key. -The keys, which are to be esciiiaged by the middle fingers, the ring fingers and the little fingers, are provided with locking devices in order to keep them in the lower position, because these keys do not cause a valve lever to be actuated as soon as they are hit do this with a temporal supervision in the specified folder. The buttons of the middle finger and the ring finger operate a linkage through which their effectiveness is controlled in terms of time, and at the same time lock all buttons finitely with the exception of the actions actuated by the index finger in their upper or lower position. The jeigefingertasten 21 ', 3'. ', 33', 2f ', 2 h,' ac '(Fig. 5. Can be actuated by itself, and then cause the printing of a character, without undergoing a blocking and The special control keys 17 #, 33 ', 34 #, 35, 36, and 37 can also be effectively grounded without being locked in the lower position and without them operate a linkage to control the chronological sequence of processes. However, if a word, part of a word or several characters are to be printed under the influence of a keystroke, then middle or ring finger keys a-4 ', 25', 26 ', 2 d ', 2 B', 2 f ', 2 7', 28 ', 29', 2g ', 21i , 2 i' to trigger the timing linkage and the locking linkage, which is shown in FIG.

The key shafts a, 5b # 5c shown in FIG. 13 of the key row 2g ', 211' and 27, which are struck by the ring finger of the right hand. provided with shoulders 68 , which protrude over lugs 69 , which rise from an edge of a horizontal Zeitgestängelenlz: ers 7o, which at its front end on a pin 71 of an angle lever 7a and at its rear end on a pin 73: angle lever 74 is rotatably mounted. The middle extension 69 of the horizontal link 70 includes at 75 the key shaft 5b. in order to prevent the link from swinging around the pivot pins 71 and 73 out of the plane of the shaft shoulder 68. A spring 76 usually pulls the handlebar 70 upward. so that it finitely lays the approach 69 against the underside of the paragraphs 68 of the key shafts. The spring 76 also serves to return the entire linkage to the normal position, -, t-enii struck keys are unlocked. The angle lever 72 is rotatably seated on a short shaft 82, which is mounted in a pair of holders 83, which is firmly seated on the plate 59, while the angle lever74 is firmly placed on a long shaft 84 which rotates in a pair of holders 85, which is fixed on the bottom plate 59 is arranged.

The upper ends of the angle levers 72 uil <1 74 are at 77 and 78, respectively hinged to a horizontal link 79, which is used to lock the keys and bridged the gap between the two angle levers. From the top of the handlebar 79- lean-eyed approaches 8o lay out of the plane of the handlebar out which are inclined to the handlebar edge and both with their top as also with their underside on the edges of the keys provided on the key shafts laterally, xusladeriden tips to work. When a key is struck and, in connection with this, the link 79 moves to the right, then acts the approach 8o on top of the tip 81 and holds the struck -'aste in subscript. However, if the key shaft is in the Superscript is, while the handlebar 79 is under the influence of a battered other Key moved to the right, then the approach 8o occurs under the lower edge of the probe shaft tip 81 and thus prevents the subsequent hitting of such a key.

When one of the three buttons acting on the linkage described is struck, the shoulder 68 of its shaft pushes the timing linkage 7o downwards. When that happens, the Winkelelliebel 72 and 74 are rotated in the direction of rotation of the clock, so that the handlebar 79 is moved to the right and the struck key in the lower position and at the same time locks the keys not struck in the upper position. The parts 70, 72, 74 and 79 form a parallelogram linkage in which the movement of one part at the same time results in the movement of the other parts of the linkage.

To the keyboard, you can hear v i er rows of keys together with the associated linkage, as shown in Fig.; 3. Two rows of keys belong to the middle finger and the ring finger the right hand and the other two rows to the middle finger and the ring finger the left hand (Fig. 7). The shaft 84 is so long that it extends over the right-hand side and extends the left-hand key group. Two shafts 82 are provided, from those - one to the right-hand group of buttons and the other to the left-hand side Button group belongs.

The rows of keys to be operated by the little fingers are also blocked when the shaft 84 experiences an oscillating movement when a key is struck by a middle or ring finger. This blocking is caused by a crank 74 'which is seated on the shaft 84 and which is articulated to a blocking link 79' at 78 '(FIG. 6). The front end of the link 79 ' is articulated at 77' to a crank 72 ' which is loosely placed on the shaft 82. The handlebar 79 'is provided with three lugs 8o which can step under or over tips 81 of the three key shafts. Although the handlebar 79 'and the parts connected to it are shown in FIG. 6 only for the keys operated by the little finger of the right hand, it should be noted that similar connections are also made at the left-hand end of the shaft 84 (FIG. 7). are provided, which take effect when a key is struck by the little finger of the left hand.

It may be specifically mentioned that the six keys struck by the index fingers of both hands. are not locked and do not operate any timing rods. For these buttons no organs like the links 70 and 79 are required because the contacts actuated by these buttons take effect immediately and do not require any delay in their effect.

As can be seen from Fig.6. acts every row of three buttons 5 a. 5 b, 5 c together with ten contacts, through the actuation of which working circuits for type levers are controlled. It will be explained in more detail later how two of the ten contacts, which are controlled by the corresponding fingers of the two hands, interact to bring one of 35 types of one type position or one of 35 types of the other type position to the stop.

The contact organs are on the underside of a support plate 58 below Using screws 86 and secured by insulating pads 87 from each other separated. Certain contact organs are made by adjusting a single key shaft actuated immediately. while the actuation of other contact organs from the simultaneous Depends on the stroke of two keys. Pins protrude from the sides of the key shafts, which act on the flexible contact springs and adjust them or give them a Allow adjustment under spring tension, thereby opening or closing comes from contacts.

When the button 2 j '(Fig. 6) is struck, a pin pushes 4.z on the key shaft 5 a on the top of a contact spring belonging to the contact 4uR and thereby closes this contact. At the same time, the pin 41 moves away from the lower spring leaf of a contact 4f R and thereby enables this spring leaf to to move downwards so that the contact .4 f R is opened. In the same In this way, a pin 43 on the key shaft 5b causes the contact 4 to close. cR and an opening of the contact 4gR when the button 2 k 'is struck. Of the Key shaft 5 c is provided with a pin 46, which when you hit the key 21 'the contact 4eR closes and the contact 41cR opens.

The key shaft 5a also carries a second pin 40, against the top of which the middle spring leaf of a double contact 4bR and 4bR 'lies. This spring leaf lies not only on the pin .Io, but also on a pin .12 of the key shaft 5b, so that both keys 2j 'and 2k' must be struck before the middle spring leaf, which is on their pins 40 and 42 rests, able to move downwards and the contact .4 bR opens and the contact 4 bR 'closes. In the same way, the pins _i4 and .i5 of the key shafts 5 b and 5 c support the middle contact spring leaf of the contacts 4 (1R and .I (IR ', so that both buttons = k' and 21 'must be struck before the contact. Usually opened and the contact .IdR 'can be closed.

The eight sets of contacts that interact with the eight rows of buttons are similar to each other in arrangement and operation, so that the above Description, which refers in particular to the contacts that lead to the The little finger of the right hand belongs to the pressed keys, too applies to the other seven contact sets. The contact sets are in the drawing figures by the capital letters appearing in the reference numbers chosen for them A distinction is made between R and L, with the letter R indicating contacts. which through Keystroke operated by means of the fingers of the right hand and the letter L on contacts made by keystroke by means of the fingers of the left hand be operated. Those appearing in the reference numbers chosen for the contacts Numbers i, -2, 3 and .i indicate that there are uin contacts which through Hitting a key is finitely your index finger or the middle finger or your ring finger or your little finger.

Each of the six control keys or rails in the middle of the keyboard has a special contact that is actuated when the control key is pressed. If z. B. the shift key 33 'is struck, then a pin 5o provided on this causes the closure of a züigeordtieten I-Zoritakts SHC. Hitting the intermediate button 17 " causes the contact SPC to close through the pin 5i connected to it. The contact PSC is closed by a pin 53 on the shaft of the reset button 35. The carriage return rail 36 causes a contact CRC to close by a pin when it is hit 54 and the tab key 37 the closure of a contact TB C by a pin 5 , 3 located on its shaft. The contact S I_C is closed by a pin 5 2 on the LTni.clialts lock key 3. The shaft of this toggle key is at 88 (Fig .6), and the cover plate 89 can be inserted into this recess and the key can be locked in the lower position, whereby the contact S L C is kept closed as long as the 7 @ 1> @nlage is to be held 89 is located in the middle of the plate and closes the opening 90 in the housing 57 from which the buttons protrude These contact combinations are held in place by the interaction of locking links 79 with the buttons. This happens until devices for temporal contact monitoring become effective and cause current surges through the contacts, whereby the index finger contacts become effective first, followed by the middle finger contacts and so on.

The devices for temporal contact monitoring include a number of cam disks i T, 2 T, 3 T, .i T, 2 Ta, 2 Tb, = Tc, zTd and AT. (Fig. 7). The cam disks consist of insulating material and are placed on a shaft 9 i, which is mounted in holders 92 which sit on the base plate 56. The shaft 9i is driven via a coupling 93, which enables the optional connection of the shaft 9i to the shaft 94, which rests in a bearing block 95 and is continuously driven by a motor 11 via a speed reduction gear 96.

The clutch 93 is engaged each time. if more than one character is to be printed under the influence of a joint keystroke, i.e. when a link 70 (Fig. 1 3) is actuated by a middle or ring finger and the oscillating shaft 84 is rotated in the clockwise direction. An arm 97, which has a pawl 98 at its end, is firmly seated on the ZZ-elle 84. This pawl is guided in a slot which is cut into an extension 99 of a holder which is fastened to the base plate 56. A projection ioi protrudes from the pawl 98, which is usually below a projection 102 which is provided on a release disk 103 for the clutch, whereby the engagement of the clutch is usually prevented. A spring io4, which is stretched out between the pawl 98 and the holder ioo, is used for this purpose. usually to hold the latch in a certain basic position. If, however, one of the keys assigned to the middle finger or the ring finger is struck, the shaft 84 experiences an oscillating movement, the pawl 98 being pulled to the left in the sense of FIG which the latter is then able to move downwards in the counterclockwise direction of rotation, which results in the engagement of the clutch.

The coupling parts are shown in FIGS. 9, to. ii and 12 illustrated. Fig-. c) shows the equipment of the disk 103, which is firmly connected by riveting to a disk io5, with two approaches ioa. The disk io; sits firmly 'on a hub part 107 which is attached to the shaft gi. The disks 103 and io5 are then provided on the shaft 94 with three arcuate recesses io8 which narrow towards one end. In each of these recesses there is a hardened cylinder 109, which cylinder can rotate freely in the further part of the arcuate recesses iog, but clamp themselves in the narrow part of the recesses 108 between the outer boundary of the same and the shaft 94, so that a driving connection occurs between the shaft 94 and the disk 103 , which is connected to the shaft 9i by the hub piece 107.

The three cylinders log are pressed into the clamping position by a plate i io (Fig. Io), which sits loosely on the shaft g4. This is done in that a spring iii, which engages the plate i io, seeks to rotate it counterclockwise, so that three projecting against the shaft 94 lugs against the cylinder iog and these in the narrow part of the Press notches io8. The cylinders iog are usually prevented from assuming the clamping position because the disc 103 is prevented from rotating in the clockwise direction by the extension piece ioi. However, as soon as the extension piece ioi releases the extension piece io2, the plate iio is able to rotate under the influence of the spring acting on it and to bring the cylinder iog into the clamping position, whereupon the shaft gi is set in rotation by the shaft 94 will. The cylinders (FIG. 9) are secured against longitudinal displacement by the hub part 107 on the one hand and a plate 113 fastened to the outside of the disk 103 on the other hand.

The two diametrically opposed projections io2 of the disk 103 allow a rotation of the coupled parts each time the shaft gi is coupled to the shaft 94; r8o °. If the attachment ioi moves out of the movement path of the attachment io2, then another attachment 114 on the pawl 98 enters the movement path of the other attachment part io2 of the disk 103, so that it is caught. When the keys properly return to the upper position, the pawl is moved back into its basic position by the shaft 84, so that the extension piece ioi then catches an extension part io2 again.

The keys that are struck are released each time by a cam surface 115 on the hub part 107 . These cams meet at their on the upper end 116 (Fig. 6) of a latch lever 117, which is mounted at 118 on the holder part ioo. A spring iig seeks to rotate the ratchet lever 117 in the clockwise direction so that an attachment part 12o of the same is held in contact with the outer edge of a locking lever 121 provided with a recess, which is firmly seated on the shaft 84. When the shaft is given a clockwise oscillating motion, such as when a key is pressed, the arm 121 swings downward with the stopper 120 going up. and rests against a shoulder 122 on the arm 121. This prevents the arm I21 from swinging back counterclockwise, and the shaft 84 cannot return to its starting position either. The struck keys are held in the lower position by the handlebars 79 and their lugs 8o until the shaft gi has performed almost a partial rotation of i8o °. When such a rotation of the shaft gi has taken place, a corner surface 115 strikes the end 116 of the lever i7 and rotates this lever counter-clockwise so that the extension i2o is pulled off the arm 121. The arm 121 and the shaft 84 can then swing back in the counterclockwise direction of rotation, the links 79 being taken along, which release the keys. The shaft 8.4 serves two purposes, namely on the one hand to monitor the locking and release of the buttons, and also to control the clutch. At the same point in time at which the released shaft 84 begins its counter-clockwise rotation and thereby releases the buttons for the upstroke, the pawl 78 moves to the right, as a result of which its attachment 114 emerges from the movement of the attachment 102 while the approach ioi, under approach 11.1. occurs and locks the clutch in the normal released position.

A coupling is provided between a starter switch and the type keys in order to prevent the keys from being locked in the lower position when the machine is not in operation, since otherwise pressing the switch would readily occur when the switch is engaged. An engagement button 125 of a toggle switch sits between two tabs 126 of a switching lever 127 which is mounted at 128 on a holder part below the keyboard plate 58. Another tab 129 sits in such a position on the lower edge of the lever 127 that it is outside the path of movement of the latch lever 117 when the latter assumes the position shown in FIG. 6 with solid lines. When the switch 127 is moved to the position shown in dashed lines, the tab 129 abuts against a portion 130 of the lever 117 and prevents this lever from hitting your arm 121 when the keys are struck. Therefore, if a key is struck while the operating current is switched off, then the struck keys are not locked in their lower position, and an undesirable pressure when the switch is engaged is avoided.

The disks iT, 2T, etc. on the shaft 9i serving for the temporal monitoring of the operational processes are rotated counterclockwise (in the sense of FIG. 6) to abut with claws 131 at the ends of the contact spring leaves 132 to be brought. These contact spring leaves are insulated by means of insulating intermediate layers 133 on bent tabs 135 of the base plate 56 by screws 13._j. attached. The cams of the discs i T. -2 T, 3 T and d. T are arranged in such a way that they take effect in the specified order and actuate contacts assigned one after the other. A contact set is provided for each of the nine disks i T etc.

From Fig. 6 is - can be seen that the Zeitreglernoekenscheibe 17 @ is usually with respect to the key contacts such that a cantilevered part is located under the roller 131, so that: the contact spring is raised 132 and the contacts i R and i I_ are closed at the same time with the mediation of the movement of the contact spring 132 transmitting insulating pieces 136 and 137. If the roller 131 moves towards the disk when the protruding part of the cam disk i T is passed, then both of the aforementioned contacts are opened simultaneously.

The three other sets of contacts, one of which is assigned to the timing regulator contact disks z T, 3T and dT, are, like the sets of contacts, designed with contacts i R and i L, the only difference being that they are actuated at a different time, which is due to the fact that the protruding parts of these cam disks are differently offset from that of the cam disk i T, so that the contacts are closed one after the other.

The contact sets which are assigned to the timing control disks zTa, z Tb, a Te and aTd have a slightly different design. With these contact sets, the outer contact of each disk, i.e. the contact a 1t, 2 p, a s and 2 1r furthest from the timing contact disk, is usually open, while the contact underneath the bar is 2 M, 2 o, z q and 2 71 is usually closed. These contact positions are switched over for each contact pair at the same time, always when the projection on the timing regulator contact disc 2T takes effect. This has to do with the fact that all these contacts have to do with the selection effect for certain characters by the middle finger, "- which in the course of the operational processes following a keystroke in second place, i.e. left for printing the second character, take effect. In order to close the upper or external contacts and to open the lower or internal contacts of this contact set, there are insulating pieces 138 and 139 between the lower contact spring leaf. from which the contact actuation proceeds, and the contact spring leaves lying further outwards are provided. These . Contacts are only indicated schematically in the middle of FIG. 14 and will be explained in more detail later with reference to this drawing figure.

The time regulator disk.-37 '(Fig. 7) has the same design as the disk i 7' and acts on a single contact AC. which is usually closed. This contact is opened as soon as a printing process starts to prevent special operations, such as. B. Switching. Intermediate switching, switching back, etc. occur simultaneously.

The apparent from Fig. 8 modified design of the keyboard and the time regulator organization for mastering the type lever stop of an assembled with it Typewriter operates in a similar manner to the device shown in FIGS for remote control of typewriter type levers. The insignificant differences which result from the modified arrangement of FIG. 8 are as follows: The lower keyboard plate 59 'is not carried directly on the base plate, but is attached to the side frame plates 1e1.0 by means of screws, which pass through lugs 141 provided on plate 59 'pass therethrough.

The release element for the clutch is in the form of an angle lever 98 ', Zvelcher is mounted on a holder at 42. The upper arm of the angle lever is coupled by a pin-and-slot connection to an arm 97 'which is firmly seated on the release shaft 8.4. A rotation of the shaft 84 in the direction of rotation of the clockwise serves to rotate the angle lever 98 ' counter to the direction of rotation of the clockwise and to move an attachment ioi on the angle lever out of the path of the attachment ioz of the coupling and thereby enable the coupling part to rotate.

Near the end of a machine game, a cam 115 on the coupling part meets the end of a latch lever 117 'which is rotatably mounted at 118' on a holder 144 which sits on the underside of the keyboard plate S9. The ratchet lever 117 'serves to lock the shaft 84 in a position in which the keys are held in their lower position until a machine game has ended. A spring iig 'holds the ratchet lever 117' against an arm provided with a shoulder on the shaft 84. The upper end of the ratchet 117 'protrudes into the movement path of the lug on the switch lever 127 so that when the switch is. is in the disengaged position, the ratchet lever 117 'is prevented from turning counterclockwise and accordingly then no blocking that can bring about the struck keys.

The type carriers are operated by solenoids, which are under control can be excited by the button and timer contacts, with the controlling The keyboard and the time controller are assembled directly with the printing device can be, as shown in Fig. 8, or by means of remote transmission emitted impulses the excitation of the printing unit solenoids can be brought about, as is assumed in the illustration of FIGS.

; 'Zach's illustration of Fig. 8 is a multitude of solenoids, of which only two are visible in the drawing with the reference symbols Ii and Cc are arranged in two rows offset from one another on a rail i 5o, which extends across the machine and attached to the side frame pieces 140 is. In each Solenodd there is a nucleus i 5 i, the one at 152 near its upper one End is hinged to an arm 153 which is in a vertical rod 154 is stored. The end of the arm 153 is connected to a link 155, which is coupled to a lever 157 by a pin and slot connection at 156, which the key lever of a known under the name "Electromatic", in 8 corresponds to the typewriter indicated in the drawing. This lever could but also correspond in its function to the key lever of another typewriter.

The links 155 of the various levers 157 are all in one Row, but the arms 153, which are connected to the individual links, lie alternately on one side and on the other the handlebars and lead alternately to a solenoid of one and the other solenoid line.

Each energization of a solenoid results in a downward movement of the associated link 155 and the lever 157 connected to it, whereby the stop of a type lever 16o of the typewriter against the paper roller 172 is brought about. How this happens does not belong to the essence of the invention. It suffices to mention with regard to the electroinatic typewriter indicated in Fig. 8 of the drawings, (let, the downward oscillation of a lever 157 'results in the coupling of a cam 162 to the continuously rotating drive roller 161, whereupon the cam mounted in an angle lever 163 162 a rotation is given, which also results in a rotation of the angle lever, which then brings the type lever to abut against the paper roller 172 through the coupling linkage 164, 165, 166.

Solenoids are also provided for the control of operating functions of the typewriter. It was mentioned earlier that if you hit the shift key, space key, shift lock key, reset key, carriage return key, and tab key, contacts SHC, SPC, SLC, SSC, CRC, and TBC are closed. These contacts, which also appear in the working circuit diagram of FIG. 14, are parallel to one another at solenoids SH, SB, SL. SS, CR and TB connected. All six solenoids and the associated contacts are connected in series with the usually closed timer contact AC, so that each time a solenoid contact is closed, the two ends of the associated solenoid winding are connected to the two main conductors 175, 176 of the power source, so that the relevant operation in the Screeching machine is triggered.

The closure of the main current switch PS (Fig. 14) and the switch 125 causes the connection of the main current conductors 175 and 176 of the Arheitsstroinkreissy stems to an electrical line network. The switch i25 is the switch that was mentioned in the previous description and that has the effect that when the switch 125 is open, the keys that have been pressed are not blocked. In FIG. 14, the switch is shown closed, and in the other figures, too, it is assumed that it is closed, as is necessary in normal operation. The drive motor 1! -for the timing device is connected to the b ° iden main conductor 17.5, 176 so that it is continuously in operation when the main switch PS ' and the switch 1-2,5 1, l are closed.

In the middle part of the working circuit diagram of FIG two rows of solenoids shown. These solenoids can be operated on lever i_57 of type lovers to think iCio connected to a typewriter. as in Fig. 'shown. When one of these solenoids is excited, a letter is printed, be it in small or large letter, a number, a punctuation mark or one special character. Each of the solenoids shown in the figure is with the Marks are provided, which are printed by pressing the TYllenliebels assigned to him can be. The first of the two attached to a solenoid in the figure Character tv is printed on large letters when switched. while the second character arrives at the printout when the shift key is not pressed. For example, if that Solenoid 9! is excited, then it usually controls the pressure of one Exclamation mark; but when the shift key 33 @ is pressed when the solenoid is energized, the digit g is printed.

As can be seen from the solenoid designations, l: (3ininen precedes certain types of digits twice. This has to do with the fact that these "digits 1, 2, 3, 4, 5, 6 and 7 are finite with the seldom occurring special characters (');&, I and °; o are connected, «-which can be selected in place of the more frequently used punctuation marks,. -"'-and;. These solenoids i:, 2 (, 3), .l- #, 5 &, 611 and 7 "," o are connected to the time controller contacts 211, 2S, ap and 2; 1, which are only closed for the second printing process in the machine game, for which the keystroke through the middle finger over the time regulator contact a R acts, sc that these less frequent characters are selected with the middle finger, as stated earlier. Although these characters are printed the second time a machine game is printed, no switch back is necessary because the index finger keys can remain unused if d he less common characters are printed.

_XI All remaining soletioicles with _Xustialnne of the seven mentioned are in series with all eight sets of key contacts between main conductors 175 and 176. Each solenoid can be energized by actuation of any of the four pairs of key contact sets. The 35 common solenoids are wired so that each can be selected by one of 35 different combinations of contact closures for excitation, which by. Keystroke can be brought about by means of two corresponding fingers of the two hands. The index finger contact sets take effect first because these contacts are in series with the normally closed timer contacts i R and i L. which are assigned to the timer contact disk i T. Contacts assigned to: middle fingers, ring fingers and little fingers are in series with time regulators 2 R, -2 L; 3 R, 3 L and d. R, -. L and are activated one after the other by the time control cam disks 2T, 3T and .4T. The current paths may be explained using a few examples.

The letter e is selected in the keyboard shown in Fig. 5 by hitting the key ah ', which has the consequence. that the contact i eR (Fig. 14.) is closed and the contact i gR is opened. The pressure control circuit in this case is as follows: main conductor 176, contact i R, usually closed contact i dR. Wire i 8o, usually closed contact i bR, wire 181, contact i cR, wires 1.92, 183, solenoid Ee, wires 184, 185, 186, 1.97, usually closed contacts i 11_, ig L, if L, wire 188, contact i L, main conductor 175. The energized solenoid Ee pulls the associated lever 157 downwards, whereby the type lever with type e is struck.

The letter na is selected by pressing the key combination 2 2 ', a3', 2 a ', a h' (Fig. 5), whereby the closure of the contacts i cL, i eL, i dL ', i aR, i cR and i bR 'and the opening of the contacts i gL, i hL, i dL, i fR, i gR and i bR is brought about. This creates the following circuit: main conductor 176, contact i R, usually closed contact i dR. Wire i, go, contact i bR ', wires 189, 19o, 19i, solenoid Mn, wires 192, 193, closed contact i dL', wire 188, contact i I_, main conductor 175.

If the letter. in. as a capital letter would have written «-erden should then the Shift key 33 'would have been pressed before the character keys were posted. and the U inshift key would be held in the subscript until the letter 11 would have been printed. If this .I is the first letter of the first word of a sentence, then the subsequent letters could of the town immediately then releasing the shift key 33 'for going up and by pressing the key by means of the middle finger, the ring finger and the little finger can be printed. In this case the shift key works 33 'as a tax body for the capital initial letter.

To write an entire word or phrase in large letters, the shift key 33 'must be held in the lower position or the shift lock key 3q. ' must be locked in their subscript in order to thwart other tax effects get released.

The shift lock key 3 # can, instead of through the solenoid SL and thereby being made dependent on the time regulator contact AT, also than the usual one mechanically operated toggle lock key of a typewriter are considered. Such a mechanically acting device can be used with machines which often entire lines are written in large letters or rows of digits should.

The selection of a point for the pressure can be done by hitting the button 2i ', whereby the contact i aL is closed and the contact i fL is opened. The circuit for this pressure is as follows: Main conductor 176, time regulator contact i R, usually closed contacts i fR, i gR and i hR, wires 19.1., 195, contact 211t., Which is used during the first, third and fourth printing of a machine game is closed, wire 196, solenoid 2nd, wires 197, 198 and 199, contact i aL closed, usually closed contacts i bL and i dL, wire 188, timing contact i L, main conductor 175. It may be noted here that this is one of the keyboard shortcuts by which characters that occur less frequently are printed during the second printing process of a machine game after selection by. the middle finger. For dot printing, the circuit goes via contact 2 m, which is opened during the second printing process of the machine game, and contact 2-11, which is then closed and selects a bracket symbol (in place of the dot). In other words, the pressing of the keys 21 ', 27' or 30 ' (Fig. 5) causes the selection of a point for the pressure, while the pressing of the corresponding key 2q.' in the row of keys assigned to the middle finger now brings about the printing of a bracket sign. The by hitting the key 2q. ' and the closing of the contact 2 aL established circuit for the printing of an a (instead of a point) runs as follows: Main conductor 176, time control contact 2 R, which is closed by the time control cam disc 2T at the end of the second printing process in the machine cycle, usually closed contacts 2 fR, 2gR, 2ltR, wires Zoo, toi and 195, contact 27i, which is closed by the time control cam disk 2Ta during the second printing process in the machine game, wire 202, solenoid 2 (, wires 1 97, 198, 199, contacts 2 aL, 2 bL, 2 dL, time controller contact 2 L, which is closed by the time controller cam disk 2 T during the second printing process of the machine game, main conductor 175. In the same way, the other time controller cam disks 2 Tb, 2 Tc and 2 Tc and 2Td establish switching connections during the second printing process of the machine game , which turns one of the six remaining voter solenoids into the circuit for less common characters in place of the Soleno @ ide, which control the printing of common punctuation marks and other characters. Immediately before and after the second press of the machine game, the timing cam discs allow contacts 2 in, 2 0, 2 q and 2 v to close in order to make the frequently used solenoids operational in the event that the index, ring or pinky fingers use these solenoids Select actuation.

An example can also be used to explain how the processes take place when several key combinations are pressed at the same time in order to print a `` gort '' or a type sequence under the control of a single stroke of the keyboard using both hands. Assume that the word pure is to be printed. In the keyboard of FIG. 5, the keys 2 b ', 2 e, 2 f', 21 a, z i and 2 k ' are then pressed by the fingers of the right hand and the keys 21', 2.1. ', 25 and 28 'by the fingers of the left hand, struck. This brings about the closure of the contacts i cR, 2 RR ', 3 dR', q.cR, i aL, 2 bL 'and 3 cI_. This is followed by the emission of four current pulses in quick succession, which causes the four letters of the word pure to be printed as follows: The first pulse runs in the following way: main conductor 176, usually closed contacts i R and i dR, wire i 8o , Contact i bR, wire 181, closed contact i cR, wires 182 and 183, solenoid Pp, wires 197, 198, 199, put contact i aL, usually closed contacts i bL and i dL, wire 188, contact i L, Main conductor 175. Immediately after the letter p is printed: contacts i R and i L open, while contacts 2 R and 2 L close to initiate printing of the second letter. The second pulse goes in the following way: main conductor 176, contact 2R, closed hotital: t 2 dR ', wires 2o5, 2o6, 207, solenoid Ui-t, wires 208, Zog, 210 and 211, switched contact 2 bL ', for usually closed contacts 2 d1_ and 2I_, main conductor 175. The excitation of solenoid Vir causes the letter it to be printed, whereupon contacts 2 R and 2 L are opened and contacts 3 R and 3 I_ are closed and cause the third letter to be printed.

The third impulse for word printing goes z in the following way: main conductor 176, contact 3 R, rearranged contact 3 dR ', wires 212, 2o6 and 2o7, SolenoM Rr, wires 213, 214, 2i5, 2i6, rearranged contact 3cL, for ge "" Oily closed contacts 3 bL and 3 dL, contact 3 L, main conductor 1 7 5. After the letter r has been pressed, contacts 3 R and 3 I_ are opened and contacts .IR and 4 L are closed, whereby the pressure of the fourth Letter of the word is introduced.

The fourth impulse goes as follows: Main conductor 1 76, contact 4.R, for Gewölinlich @ escltlos: ette contacts -.dR ttnd 4bR, rearranged contact .I cR, wires 182 and 1 83, solenoid Ec, wires i8-1 and 185, usually closed contacts.IhL, 4.-L tind d. f L, contact -. L, main conductor 175. The excitation of the relay Ee lying in this circuit causes the printing of the last letter c ° of the word pure. Immediately after this type has been printed, the contacts .IR and .Il "open and the contacts R and i I_« - earth closed, since the timing controller coupling is interrupted and held in its rest position in preparation for a new printing press game.

The contact.-IC opens after the first part of a press game, thereby energizing any of the solenoids SH. SP, SL, PS, CR, and TB will be prevented while printing continues.

Claims (7)

PATENT CLAIMS: i. Typewriter with facility for writing ' a character string by simultaneously pressing keys in alternating combinations, whose jerler <las stop organ is assigned to a certain "type characterized that the keys when combined into groups, each by a specific fingers of one of the two hands are to be actuated, assigned to contact groups which are assigned by one or more keys in the same key group controlled, the contacts of the different contact groups. which under the action of keys of one or two by the same finger of the two Hands of key groups to be operated are available for selection of a 1 -> specific type carrier to serve. 2. Machine according to claim i. characterized in that, with providence, e = itles right side, a left side and a middle keyboard section die Groups of keys lying next to each other in rows, «-elche with reference to the working position of the operator iti in the front-to-back direction, with the half of the rows on the right for the various groups of keys Section of the keyboard and the other half of the left-hand section of the keyboard form, and elass rows of keys whose position corresponds to that of one another Fingers of both hands match, for the formation of the excitation circuits of the T_vpenträgerkraftorgane interact. 3. Machine according to claim t and 2, characterized marked, elass to each forming a group, by a specific finger the hand anzttsclilagetiden row of keys include three keys. their assigned contacts are in such a circuit connection with each other that excitation circuits for Typenträ Gerkraftorgane come about when individual keys or two directly next to each other adjacent acts in the series are posted. .I. Machine according to claim 3 characterized in that each of the three is to be struck by a finger of one hand Keys ten contacts are assigned and that through these contacts in cooperation with the ten contacts of the one to be struck by the corresponding finger of the other hand Keys the excitation circuits of the power organs controlled by 35 type carriers. 5. Machine according to claim i and 2. characterized in that it includes a device is equipped to regulate the timing of the operating processes, which has mastered the closing of the excitation circuits for the Tvpenträgerkraftorgan in such a way, That is, through the "keystroke" by means of the different fingers of both hands Tvpträger selected for the imprint reach the stop in such a sequence. first through the index finger, then through the ring finger and last the valve door selected by the little finger reaches the stop. 6. Machine according to claim 5, characterized in that the timing device has four pairs of cam disks for closing four pairs of timing contacts which are connected to the four contact groups which are actuated by the rows of keys struck by the four fingers of the two hands, wherein the timer contact, which is assigned to the index finger key contacts, is usually closed so that the type carrier selected by the index finger reaches the stop without delay. 7. Machine according to claim 6, characterized in that for the four contact closure serving timing control cam discs a coupling device for coupling to the drive is provided, which is only indented if more than one type carrier for the imprint is selected. B. Machine according to claim 7, characterized in that that in the supply circuit for the drive motor of the Zeitreglernok kenscheiben Switch is provided, which with a device for locking the buttons in their lower position cooperates so that the locking device when the switch is open for the keys, is ineffective, so that when the machine is idle the keys, if they are struck, they are not locked in the subscript. G. machine according to claim 1 and 2, characterized in that the thumb assigned to the two thumbs middle keyboard section Keys for circuits of the machine, e.g. B. Switching and gap switching.