DE1948204A1 - Type wheel printer - Google Patents

Description

Dipl.-Ing. G. Schliebs 61 Darmstadt Ludwig-Büchner-Sfraße 14

Patent attorney phone (06151) 70928

Postal check accounts Frankfurt a. M. 111157 Bank details: Deutsche Bank AG., Darmstadt Telegrams: inventron

To that

German Patent Office

Munich 2
Zweibrückenstr * 12

Your reference your letter _ My reference H 189 day 22 * 9 * 69

Patent application

Applicant: Socilte d'Applications Genferales d ¹ Electricity et de Meeanique »Paris (France) ·

Type wheel printer

The invention relates to a type wheel printer with several Type wheels, a turning control device * and a sliding control device, which both work at the same time, but independently of each other, as well as a stop device. at Each print cycle is coded electrical under the control of a decoding electromagnet acting on it Printing properties brought the desired character into print position in the desired time and then carried it through the stop device struck against a paper roller

Such printers have been known for a long time. With them, the characters are on separate character carriers, the Type wheels arranged, of which fewer are available as sign. The stroke speed is determined by the inertia and / or the size of the stroke of the moving parts limited. Such machines were temporarily in the background and have become strong again in recent years observed.

The main aim of the invention is a character wheel printer of the type mentioned at the beginning, in which the

Letter dated 9/22/69 sheet 2 * "" Dipl.-Ing. G. Sleeps

to the German Patent Office, Munich 1948204 Patent Attorney

speed by reducing the masses and strokes of moving parts is greatly increased

The character wheel printer according to the invention is essentially characterized in that the rotation control device and the slide control device have a similar mechanical structure consisting of a single-turn clutch, a connecting rod and a pivot lever as well as two through each consists of a toggle-driven racks, which engage diametrically in a pinion, and also from one of the racks Selective switching lever as well as a cage which is movable and carries a fixed stop, whereby the switching lever and the movable stops Electromagnets can be adjusted and the parts interact in such a way that that with a forward movement of the pivot lever the unselected rack is stopped by pressing her Knee lever buckles in the stop against the switching lever, and the selected rack then only the forward movement follows, pushing back the other rack until her knee lever in turn against the fixed or movable selected stop of the cage comes to buckle, and the selected rack or that of its controlled part then by a locking system is determined immediately. When the Swivel levers return all adjusted parts to their original position.

In a further development of the invention at least one of the two control devices the cage is in turn by χ, Jälektromagnete such that the selected by the selected mobile or fixed stop adjustable rack has a doubled number of sustaining levels.

That controlled by the rotation control device is advantageous Part of a rotary control shaft on which the pinion is attached ~

Letter of 22,9,69 sheet 3 ~ Dlpi.-Ing. O. SehlUbt

to the German Patent Office, Munich 1948204 Patent Attorney

iet and which carries the printing unit at the same time,

This is a * further characteristic of the invention Sound of the sliding control device controlled part is an articulated frame, one arm of which is engaged by a rack and transfer the desired information to the printing unit a runner transmits this information algebraically su the tone of a rope adds information of a step-by-step control,

. The rotation control device is advantageous with the aid of a rotatable toothed bolt Terriegelbar, which is actuated by the pivot lever in such a way that it has a free end the rack latches as soon as it is stopped by the selected fixed or movable stop.

The cutting control device can have an upper cross member of the articulated frame by means of a pivot lever be pivotable bolt Terriegelbar, the one carried by the upper cross member with a tooth in recesses Can engage tooth segment.

According to the invention, the Aneohlagrorriehtung consists of one Anechlagwagen that runs on swel skins and over a rope is connected to the switchboard control. The one of Both shafts on which the stop carriage runs is driven by a half-turn clutch operated at the beginning of each pressure cycle and reads via a fork and one Sleeve the pressure unit with your by rotary control shaft and Runner selectable pressure elements with type wheels from a maximum retraction position to a minimum retraction position swivel, with the triggering to return to the maximum retraction division only on the basis of a signal from an auxiliary watch this only takes place with a slow sequence of the coded Generated pressure signals. The other of the two waves, on

009832/12 ^ 9

Letter from ^{9/22/69, sheet} 4 ~ Dlpl.-lng. G. Schliebs

to the German Patent Office, Munich 1 S 4820A patent attorney

where the stop trolley is running is stopped by one at the end every pressure cycle actuated half-revolving clutch and then brings a cam and a hammer Selected pressure element from the minimum retracted position to the pressure position.

Details of the invention emerge from the following Description of a preferred embodiment, the is shown in the drawing; in this show:

1 shows the printer in a schematic partial view from FIG in front and partly in cut |

Pig. 2 shows the rotary control device of the printer in section along the line II-II in Pig. 3 and

Fig. 3 is a partial section, viewed from above: longitudinal the line III-III in Pig. 2,

Pig 4 a partial section, viewed from the left, lengthways

the line IV-IY in Pig. 5,

Pig. 5 shows a partial section, viewed from the rear, lengthways the line V-V in Pig. 4,

Pig. 6 shows a partial section, viewed from above, lengthways the line VI-VI in Pig. 4;

Pig. 6a a perspective view of a switch lever of the rotary control device}

Pig. 7 shows the right one in a partial section on a larger scale lower part of Pig. 2 to illustrate the mechanism with retractable nosepiece of

Rotary control device

009832/1249

Letter of 9/22/69 sheet 5 ~

to the German Patent Office, Munich 1948204 Patent Attorney

Pig. 8 in a partial view corresponding to FIG. 2, but * in larger he em Mas rod, toggle lever and rack of the rotary control device at the beginning of the ascent or in the holding position against a movable stop *

Pig. 10 the slide control device in partial section, viewed from the front, along the line X-X in Piß. 9,

Pig. 11 in partial section, viewed from above, along the line XI-XI in Pig. 10,

Pig. 12 in partial section, viewed from above, along the Line XII-XII in Pig. H,

Pig. 13 in partial section, viewed from the left, lengthways the line XIII-XIII in Pig. 12 and

Pig 14 viewed from above;

Pig. 15 the left in a partial section on a larger scale upper part of Pig. 12 to show the locking mechanism of the slide control device j

Pig. 16 the printing unit, viewed from the front in

Section along the line XVI-XVI in Pig. 17,

Pig. 17 in partial section, viewed from the left, along the line XVII-XVlI in Pig. 16 in maximum Withdrawal position, and

Pig. 18 corresponds to Pig, 17 in the minimal retraction position and

009832/1249

Letter of 9/22/69 ^sheet 6 DipL-lng, 'β. Closed

to the German Patent Office, Munich $ 94 §20 4 Patent Attorney

Pig. 19 according to Pig. 17 in print division »

In Pig. 1 are the essential organs of an inventive Printer schematically shown. In side walls 11 and 12 of a (not shown in the other Pig.) A rotary control shaft 29 * runs on the frame of the printer their angular position via a pinion 291 from a rotation control device 2 is controlled. The corresponding information

f:

is about one in Pig. T transmitted tickle (not shown) to a printing unit 5.

In a vertical position slightly in front of the shaft 29 A parallelogram-shaped articulated frame 39 is arranged on the 1st level, whose lower pivot points of fixed axes on Frame are formed and the left arm 592 (Pig.1) is position-controlled by a slide control device 3. The corresponding information is transmitted to the printing unit 5 via a rotor 394.

In Pig. 1 a paper roller 59 is also shown, against which the printing takes place, as well as a stepping device and a stop carriage 6, which will be considered below.

In the following description, the Pig. The right-angled coordinate system shown uses a horizontal plane T and two mutually perpendicular Has planes Q and E, the plane Q being parallel to the Side walls 11 and 12 of the machine and the isbene R lower / is right to these side walls »

" Structure of the rotation control device

On a drive shaft 20 (Pig. 2 and 7, parallel to the plane R) is a (not shown) "

98327124 «

Letter dated September 22, 1969 sheet 7 Dlpl.-Ing. G. Sdiliebs

to da8 German Patent Office, Munich 1948204 Patent attorney

One-turn clutch mounted, which has an eccentric 201 and eintn cam 202 drives in the direction of the arrow Fg. On the Eccentric 201 is freely rotatable, the head of a connecting rod 203 assembled. A pivot lever 21 is at one end pivotally mounted on an axis 21a on the frame and on a central point 21b articulated at the foot of the connecting rod 203. With each rotation of the coupling, the pivoting lever 21 «performs a back-and-forth pivoting in its plane, as shown by the arrow F * ₂ . In Figs. 2 and 7 is the Swivel lever 21 in its rest or initial position each Print cycle shown; this position corresponds to its bottom dead center.

At the free end of the lever 21 are in two vertical, two planes symmetrical with respect to the plane of the lever identical toggle levers 22, 22 * (see also FIG. 8) are articulated. Each knee lever has a first end (dam lower lande in Fig. 2) articulated on the pivot lever 21, furthermore in a central point 22b «wipe its two parts pivoted and finally with its other end 22c (the upper end in Fig. 2) hinged to an associated rack 23 · »

Both symmetrical racks 23, 23 * are the same Way arranged in two perpendicular planes symmetrical to the level of the lever 21. Each rack consists of two analog parts that are offset from one another by their common width in the horizontal direction, but rigidly with one another are connected by a web 23a. The rack is guided by two pins 23b, 23c on the frame so that they only in their plane and only in a vertical direction can move. The upper part of the rack has a laterally bent toothed edge 23d. The tooth edges 23d, 23 * d of the two racks engage symmetrically in a pinion 291 which is seated at the end of the rotation control shaft 29.

0 0 9832/1249

Letter from 9/22/69 sheet 8 " Dlpl.-Ing. G. Sdtlieb *

to the booty ehe patent office, Munich 1948204 patent attorney

The% tzel is clamped by means of a screw and elastic sleeve 292 fixed to the pinion and fixed to the shaft. I'm in the collar of the pinion, It is located in a warehouse which is housed in the left side wall of the frame (Pig. 1).

A spring 22d, which is attached to the lever 21, pulls at the lower end of each toggle lever. The spring tries the knee lever to pull into a position in which it is supported on the associated rack 23 via a central nose 22e. Everyone At its upper end 22c, which is mounted in the rack 23, toggle lever has a window 22f such that an upper nose 22g of the toggle lever is located between a middle nose 23e of the associated rack move their level and a slightly lower level can. In the rest position shown in Fig. 2 are the tooth edges 23d of the two racks at the same height arranged so that the height of the axis of the pinion is equal to the common mean height of the two racks.

Left in front of the central upper parts of the Racks and a little above their central lugs 23e, a cage 24 is arranged (Fig. 4, 5 and 6 in the Levels Q, R and P). The cage has a horizontal section a U-profile on (Fig. 6) and is with two in one plane extending arms equipped by two pins 24b, 24c are guided on the frame in such a way that the arms are only in their plane and only in the vertical direction can move.

In narrow windows of the two facing each other vertical walls of the cage can have three flat pieces 241, 242, 243 arranged one above the other as movable abutments slide. A fourth stop 244 arranged above 243

009832/124 «

Letter dated 9/22/69 sheet 9 Dipl.-Ing. G. Sdilieb

to the German Patent Office, Munich $ 948204 patent attorney

stands in relation to the cage. The heights of the four stops are uniform with the distance h between successive ones Staggered attacks.

The cage can take two positions: the lower position (shown in Figs. 4 and 5) is defined by a pawl 245 which is pivotable about a pin 245a on the frame and is pulled against a thumb 24d of the cage under the action of a spring 245b attached to the frame, the upper position is through a stop 24e on the frame defines against which the cage is pulled by a spring 24f attached to the frame. The difference in altitude between the upper and lower positions of the cage is -a / 2. The relatively long lower arm of the cage ends in one Beak 24g, which lies under the edge of the pivot lever when it is in the bottom dead center.

Each of the movable stops 241 to 243 (FIG. 6) has two large lateral noses 243a, 243'a which open the side of the racks 23, 23 'protrude to with these to work together, and on the same side a small lateral nose 243 "b» which is intended to work with the long arm 252 of a reset lever considered later to work together. On the one pointing away from the rack On the side and outside of the cage 24, each movable stop has a lateral recess 243c into which two levers 281, 282 can penetrate, which also continue be considered below. Eventually everyone becomes agile The stop is pulled forward by a spring 243d in the cage until either 243b reaches 252 (rest position in Fig. 6) or a shoulder of 243c on either of the two Lever 281, 282 is supported within the stroke permitted by a bolt 243e, this bolt against the Cage comes into contact.

00933 2/1249

Letter from 9/22 69 ^{sheet 10} dupl.-lng. G. Schlieb

to the German Patent Office, Munich 1949204 ^{Patent Attorney}

A flat angle 25 called a Klickstellhebei has a short arm 251 and a long arm 252 (FIG. 4). The reset lever, which is mounted pivotably about an axis 25a on the frame, is influenced by a spring attached to the frame in such a way that its short arm 251 remains in contact with the pivot lever 21, or more precisely in the rest position of this lever with a retractable nose piece 211 of this lever (Fig. 7). The turf has the shape of a truncated angle. One angle wing lies against the surface and the other against the edge of the lever 21. The nosepiece is held in the lever 21 by two pins 21c, 21d which reach through two windows in a wing. On the other hand, these two windows define ^{end positions, indicated schematically by the arrow F * lf} 2, which the nosepiece can assume with respect to the lever 21. The other wing of the nosepiece is provided with two recesses. The first recess allows the short arm 251 of the reset lever 25 to come free from the nosepiece under the action of the spring 25b to jump into direct contact with the lever 21. The second recess allows the position of the nosepiece to be controlled in a manner described later. The nosepiece is held in the rest position (FIG. 7) by a spring 21 β attached to the lever 21. in which the arm 251 of the lever 25 is in contact with the nosepiece and not with the lever 21. A flat angle lever 204 is pivotably mounted on the frame about a pin 204a. If the pivot lever 21 is at its bottom dead center (as in FIG. 7), the lever 204, which is pulled by a spring 204b attached to the frame, tries to come into contact with the cam 202 with its short arm via an edge 204c bent at its end . The long arm of the lever 204 then leads with its free end into the second recess of the nose piece in such a way that it is in its rest position shown in FIG

Letter from 9/22 69 Sheet 11 Dlpl.-Ing. O. Simple

to the German Patent Office, Munich 1948204 Patent Attorney

ff

has come free from both ends of the cam 202 and the nosepiece, then its stroke triggered by the spring 204b is restricted by a stop 204d on the frame.

A switching lever 26 (the shape of FIG. 6 and 6a to take decision is) is pivotally mounted on a shaft 26a on the frame. In detail , the switching lever consists of a triangular flat piece with a central recess and an edge bent up on the side of the toothed racks with two upper lateral projections 26b, 26'b. On the other side of the _v reversing lever has also a control arm 26c. The switching lever is mounted in such a way that its lateral projections are slightly above the level of the central lugs 23e of the racks in the rest position. It can assume two extreme positions, which are defined by a stop 26d on the frame which cooperates with one or the other side of the recess of the switching lever: in the rest position shown in FIG. 6, into which the lever is pulled by a spring 26e attached to the frame is, the projection 26'b is in the path of the rack 23 '· In the working position, the projection 26b is in the path of the rack 23.

On the eccentric 201, in addition to the head of the connecting rod 203 (FIG. 2), the head of a lever 205 slides, which in turn is seated pivotably on an axis 205a on the frame. A handle 27, which is seated pivotably on an axis 27a on the frame, has two arms 271, 271 'and two identical sectors 272, 272 ", which lie in the same vertical planes as the racks 23, 23' and each has a stepped toothed edge which forms an angle of about 45 ° with the mean radius of the sector. The parts 271, 272 are each pulled by a spring 27b attached to the arm 271 and the frame into a position in which the arm 271 rests on a finger 205b carried by the free end of the lever 205

00 983 2 / 12A9

Letter from 9/22/69 sheet 12 ^ Dlpl-Ing. G. Schli.b »

to the German Patent Office, Munich 19.4 §2 O 4 patent attorney

supports. The right-angled teeth of the silk sectors a seal 27 have the task of engaging in the also right-angled lower corner 23f of the associated Rack to cooperate with this.

Levers 281, 282 (FIGS. 4 to 6) form the anchors of two Electromagnets 281e, 282e. Depending on whether these magnets are are in the rest position or in the working position, the levers are in the side recesses of the movable stops 241, 243 introduced or not. The position of the pawl 245 is controlled by a lever 283 that controls the Forms armature of a third electromagnet 283e; depending on, whether this is in boo or in working position, the latch is in turn in rest or working position. The position of the switching lever 26 is controlled by a lever 284, which is the armature of a fourth electromagnet 284e forms the switching lever depending on its position 26 in turn in a cow or working position.

The rotary control device 2 works as follows:

When receiving any encoded electrical pressure signal and depending on the coding of this signal, the electromagnets 281e and 284e remain independent of one another in rest position or come into working position · First of all, it is assumed that 283e and 284e are in rest position remain, while 281e and 282e are in their totality take one of the four possible combinations "

When the signal is received, the coupling leads at the same time of the device 2 one rotation in the direction of arrow P2. The crouch 202 immediately causes the lever 204 to pivot in the pointer direction (FIG. 7). This lever pulls the retractable hare piece 211 in its working position. It follows that the reset lever 25 under the action of its spring 25b suddenly falls into the first recess of the nose piece 211.

0 09832/1249

Letter from 9/22/69 sheet 13 'Dipl.-Ing. G. Schlieb "

to the German Patent Office, Munich | $ 4§2Q4 ρ ^ "*" ™ ^

¹ p

This rapid anti-clockwise rotation of the lever 25 (Pig · 4) just as quickly releases the movable stops up to 243, which immediately under the action of their leather assume a certain position in that they are supported either on one of the levers 281, 282 or on the cage 24. Because of the length ratios of the long arm of the lever 25 to its short arm 251, the movement the lever 25 when it comes free the movable stops 241 to 243 granted, a multiple of the thickness of the retractable patch of turf 211.

The connecting rod 203 driven by the pivot lever 21 takes the other hand, a reciprocating _V .and-forth pivoting in its vertical plane, the pivoting movement corresponds to the arrow P ¹ 2 in Pig. 2 and 7 and starts increasing the lever. This results in the lever 204 being brought back against its stop 204d by its peder 204b after it had previously escaped from crouching 202 on the one hand and from Hasenstüek 211 on the other hand. The pivot lever 21 also tries to lift the two toggle levers 22, 22 *, and after the game has been caught by their penstocks (Pig. 8), also to _{lift the associated racks 23 9} 23 *. If, however, as in the example chosen, the switching lever 26 is in the rest position, then its projection 26 ^f b locks the rack 23 'almost directly through its middle rabbit 23 * e. The assigned toggle lever 23 'kinks in its central joint 23 * b. This means that only the rack 23 is raised and that, as a result of the rotation of the pinion 291, the rack 23 'is lowered to the same extent, the associated toggle lever 22 increasingly buckling. This movement continues until the unit formed by toggle lever 22 and rack 23 is stopped by one of the movable stops 241 to 243 (ie by the large lateral nose 243a of one of these stops) or by the fixed stop 244

009832/1249

Letter from September 22nd · 69 sheet H "" Dip! .- Ing. ©. Sdiliebs

ent on carrion German Pat "MÜHClien ast 194§2Q4 Patent Attorney

Hf

is done by pulling the upper arm 22g of the toggle lever and the. middle rabbit 23® of the rack against these stops meet. At this moment the toggle lever 22 in turn buckles into its central hinge 22b (Fig. 9), while the Sound of the inertia of the moving parts entrained rack 23 their middle nose 23 © safe against the encountered Stop applies. -

In the special case described, the. four possible combinations of resting or working of the two Electromagnets 281e and 282e and consequently the movable ones Stops 241 to 243 * to which the fixed stop 244 should be added is to stop the Zahnstang® 23 on four levels evenly staggered with the constant interval h. The positions of the recesses can be determined in a manner known per se Calculate 241e to 243c of the movable stops, which are required to use the levers 281, 282 and taking into account the fixed stop these four equidistant To reach stopping points of the cream stick under consideration. These points correspond to evenly

'dö staggered angular positions of the rotary control shaft 29 _S which in turn's.u. correspond to the numbers I ₉ 3 »-5> 7 of type wheels.

In the meantime, the lever 205 in turn has a reciprocating pivoting in its vertical position at the same time as the lever 21. Executed plane, where he began with a counter-pointer ™ rotation about its axis 205a (Fig. 2). This results in that d j @ r hai bolt 27, a back-and-Hersehwenkung carried out under the action of its spring 27b;. 'Which is symbolized by the arrow F' ⁸ 2. Has. the bar began9 to approach the rack 23 in such a way that exactly at the point in time where the rack had placed it against the stop encountered, the associated gear sector 272 of this latch with one of its teeth in the

BAD ORfGiNAS.

09832/1241 - ■

Letter from September ^22nd 69 Biatt 15 Dipl.-Ing. G. Sdiliebs

to the German Patent Office, Munich t9A82P4 patent attorney

iS

has latched the lower corner 23f of this rack. This toothed rack is thus held stiffly, as / she with both Ends is latched. In the case where the electromagnet 283e has initially been brought into working position, the associated lever 283 removes the pawl 245 from the down 24d of the cage 24 · As a result, the Cage under the action of his. Spring 24f immediately moves into its upper position against stop 24e. These Displacement of the cage upwards by a distance h / 2 causes that, while all other operations remain unchanged remain, the four angular positions which can be occupied by the rotary control shaft 29 are now the digits 2, 4, 6, 8 of the type wheels correspond. -

Initially, when the electromagnet 284e has been brought into working position, brings the associated lever 284 the switching lever 26 (referred to as the rest position) from its position directly in a new (as working position designated) position, in which the protrusion 26b of the order ₇ control lever unit in the way the rack 23 is located. This switching of the switching lever 26 has the effect that, while all other processes remain unchanged, the eight angular positions that can be assumed by the rotary control shaft 29 now ^{correspond to numbers 1 'to 8 1} , which are arranged symmetrically to the previous ones on the type wheels.

If the rising movement of the pivot lever 21 continues, the rack 23 or 23 ', as already described, remains locked, then the toggle levers 22 and 22 'buckle in their central joints until the Lever 21 reaches its top dead center. The positions of the rack 23, 23 'remain here and in the first part of the subsequent decline of the pivot lever 21 unchanged. So you have a certain amount of time that is used for the attack.

0 0 9832/1249

Letter of 22.9 · 69 ^sheets t6 DlpL-lng. G. Schlfebs

to the German Patent Office, Munich $ 94 B 20 4 Patent Attorney

During the subsequent downward movement of the pivot lever 21 all parts are in their initial or rest position repatriated

- The buckled toggle levers 22, 22 * take over their

middle lugs 22e again make contact with the associated Toothed racks 23, 23 'and then pull on them, around this and the pinion 291 in their central starting positions The toothed rack, which was latched at times, was now due to the retraction of the associated sector of the bolt 27 has been released again.

- The reset lever 25, which had constantly followed the lever 21, runs back and simultaneously with this makes contact again with the small lateral noses 243b of the movable stops, in order to place them in their Starting positions.

.- Possibly the lever 21 will make contact with the Beak 24g of the lower arm of the cage 24 to return this to its lower position, in the it is locked directly by the latch 245.

- At the end of the print cycle, the cam 202 resumes Contact with the lever 204.

The slide control device 3 is very similar to the rotary selection control device 2. The description of its structure can therefore be limited to demonstrating the differences it has from that one. For a better understanding, similar parts or parts with the same function of the two devices 2 and 3 are also denoted by reference numerals which only differ in their first digit (2 or 3 in the first digit). The right and left designations used in the following description refer to the right and left sides of the front-facing printer as shown in FIG

009832/1249

Letter from 9/22/69 sheet 17 Dipl.-Ing. G. Schliebs

to the German Patent Office, Munich ^ 94§30 ^ Patent Attorney

A pivot lever 3I, which is driven by a single-turn clutch (not shown), performs a back-and-forth pivoting movement in its plane. 1, 10, 12 and 15, oriented in the plane R, the lever t> \ is shown in its rest or initial position is indicated symbolically by an arrow F ^{1 5.}

Two formed by toggle levers and rack 32/33 and 32 '/ 33' Pairs correspond to those of the device 2, but have a horizontal main direction and shift from left to right and vice versa. The rack 33, 33 * mesh symmetrically with a pinion 391, which rotates idly on a pin 391a on the frame. Just a rack e.g. 33 »is with the left arm 392 of the articulated frame 39 connected by a connecting rod 39b. The other rack 33 » runs free.

The U-shaped cage 34 in Fig. 13 has a difference to the cage of the device 2 only a flat arm that runs horizontally. The cage on the one hand and this arm on the other hand, two mutually perpendicular pins 34b and 34c cooperate, the cage and arm lead in such a way that the arm can only move in its plane and in the sightings P, R. The cage has two movable stops 342, 343 which can slide in slots in the cage, as well as a fixed one connected to the cage Stop 344. The vertical planes of the three stops are precisely staggered in a manner described below. The cage can only move by an extremely small stroke, which is set by means of a fixed stop 34e and is determined by recesses 34h in the vertical side walls of the cage. In its rest position the Cage by a tension spring 34f attached to the frame

009832/1249

Letter from 22 · 9 »69 Sheet 18 Dfpi.-Ing. ©. Sdifiebs

to the German Patent Office _? Munich 19 ^ 8204 patent application

is

This is the right setting. The cage 34 has a projection 34k on its upper side which is adjustable in the longitudinal direction of the cage _e

The movable stops 342 and 343 have practically the same structure as the corresponding parts of the device 2. The same applies to a flat angle lever 35, called a reset lever, for a retractable nose piece 311 (FIG. 7 remains fully applicable to this part of the device 3 If you turn the figure by 90 ° in the pointer sense), for a switch lever 3β for the levers 381, 382 of the movable stops and 384 äas ümschalthebelsi all three levers 381, 382 and 384 are armatures of electromagnets. The very slight displacement of the cage that occurs with each displacement of the levers and racks in the working position is caused only by the thrust of these parts against the movable or fixed stops 342 to 344.

The locking device of the rack, however, is complete different from the locking device of the device 2 and therefore needs a full description (Fig. 15).

On an axis 32a, on which the toggle levers 32, 32 'on Pivoting levers 31 are articulated, is a in the same Y / Eise Flat lever 306 mounted at one end. The second End, this lever has an upturned beak 306b and is shown by a pen 306a in a window 306c guided. The lever 306 has a © first flat ' The pawl 373 is pivotable about an axis 373a on the lever 306 sits and has an upwardly directed beak 373b on. The position of the latch is determined by the system its lower edge 573 ° with a concave recess ^ at the end against a fixed pin 373 ° on the frame,

003832 / 1-248

Letter dated September 22, 1969 page 19 Dipl.-Ing. O. Schliabs

to the German Patent Office, Munich 1948204 Patent Attorney

against which the pawl 373 is pressed by a torsion spring 373e.

A second, practically flat pawl *> 74 can rotate around an axis 374a pivot on the cage 24, has one directed to the right Beak 374b and a stem 374c, which cooperates with the beak 306b of the lever 306, and is rotated clockwise by a torsion spring 374d (Fig. 15) A flat, 'i' -shaped latch 375 is pivotably mounted on an axle 375a on the frame and points to its right Side on a downwardly directed beak 375b, which cooperates with the projection 34k of the cage 34, on the left an upwardly facing "tooth 375d, which is connected to a tooth segment 376 cooperates and almost halfway between the tooth 375d and the axis 375a a lateral Dausen 575c, the one with the beak 374b of the second latch 374 cooperates while a stem 375e of the latch works with the son label 373b of the first latch. A tension spring 375f (Pig. 15) attached to the frame has been tried to turn it clockwise. Finally, has one attached to the horizontal upper cross member 393 of the articulated frame Toothed segment 376, recesses 376c, the shape of which corresponds exactly to the shape of the tooth 375d of the bolt.

The working method of the Slide control device 3 has numerous similarities with the operation of the device 2 on. Hence be mainly the differences in the way of working are described, especially with regard to the locking.

When receiving any electrical pressure signal and depending on its coding, the xilektromagnete 381e remain up to 384 e in rest position or come into working position. Us it is initially assumed that 284e remains in the rest position, while 381e and 382e in their entirety are one of the

0 0 98 32/1249

Letter dated September 22, 1969, page 20 Dipl.-Ing. G.SchiUb

to the German Patent Office, Munich t9A82Q4 patent attorney

'■: ■ ■. SO . I.

take four possible combinations.

When the pressure signal is received, the coupling of the device 3 rotates in the direction of arrow F3 in FIG. 10. Under the action of a cam 302 on the drive shaft 30 and a lever 304 (analogous to the parts 202 and 204 in Fig. 7), a retractable nose piece 311 directly gives the cuckle lever 55 the opportunity to come free and the movable stops 342, 343 the required freedom of movement granted·

On the other hand, the pivot lever 31 assumes a to-and-fro movement by pivoting in its vertical plane in accordance with the arrow F3 in FIGS. 10 and 15? this movement begins with a counter-clockwise rotation. The lever tries to move the two toggle levers 32, 32 and then the two racks 33 * 33 * to the left via them. However, since the switching lever 36 remains in the rest position in the selected example, it holds the toothed rack 33 'almost immediately. The result is that only the rack 33 is shifted to the right and that as a result of the rotation of the pinion 391, the rack 33 ^s runs back to the right by the same amount, with its associated toggle lever 32 'buckling.This movement is continued until that of the toggle lever and rack 32, 33 formed unit is stopped by one of the movable stops 342, 343 (ie by the large lateral nose 343a of one of these stops) or by the fixed stop 344. The abutments encountered are touched by the left outer nose * of the toggle lever and the middle nose of the rack. At this moment, the rack 33 has moved the left arm 392 of the articulated frame by a certain amount to the left.

In the case specifically described, the four possible combinations of resting and working states allow the two

009832/1249

Letter dated September 22, 1969 sheet 21 Dipl.-Ing. G. Sehlieb "

to the German Patent Office, Munich 1948204 Patent Attorney

Electromagnets 381e and 382e so the movable stops 342 and 343 »to which the fixed stop 344 has been added must be to hold the rack 33 in four precisely staggered vertical planes. These four levels correspond four evenly staggered displacement positions of the horizontal plane in the projection onto a horizontal plane upper (Draverse 393 of the oil frame, these four positions cause the type wheel of rank 3, 2 or 1 (counting from the left) to be guided into the vertical stop plane will.

If the pair formed by the toggle lever and rack 32 and 33 is stopped in its movement by a movable or fixed stop, then the cage 34 is in turn pushed back to the left against the action of its return spring 34f, to the small extent that the Cooperation of the stop 34e with the recesses 34h is permitted. The result is that the bolt 375, which is under the action of its spring 375f, can fall with its beak 375b over the right edge of the projection 34k on the cage, the bolt pivoting through a small angle in the pointer direction (FIG. 15) and with its tooth 375d engages exactly in a recess of the toothed segment 376. On the other hand, because of the lever 31, the flat lever 306 has run to the left and has taken the first pawl 373 with it in ^the same direction, so that its beak 373b has moved into a position to the left of the handle 375e of the bolt ^ 75, the pawl moving towards the end of the Movement has rotated slightly in the pointer direction due to the action of its spring 373e by cooperation of its lower edge 373c with the fixed pin 373d. This prepared the return of the bolt, which will be considered further below.

In the event that the electromagnet 384e has initially been energized, the associated lever 384 brings the toggle

009832/1249

Letter from September 22nd, 9 sheet 22 DlpS.-lng. ©. Sleep

to the German Patent Office, Munich 1948204 Patent Attorney

36 immediately from its initial rest position in working position. Now the other projection of the shift lever is in the way of the rack 33. This switching d @ s Umsehalthebels 36 causes, while all® other operations remain unchanged, the three new displacement positions, which the upper traverse 393 of the The articulated frame can now fit the wheels of the Sanges 4 »5 or 6 (counting from the left) in the vertical Announcement level leads,

Macleaem of the joint raamenj as just described, once is locked and the pivot lever 31 further to the left runs, the toggle levers 32 and 32 · continue to buckle until the lever 31 reaches its left pressure point. Here and during the first part of the return movement of this lever, the positions of the rack 33 and 33 'remain unchanged. So you have a certain amount of time is used to the stop.

The further running movement of the lever 31 to the right has ZWC result, all the elements are returned to their initial or rest position "When the first latch 373 passes back to the right, pulling her beak 373b on a stick 375E of the bolt 375, which this against its spring slightly pivots, whereby it unhooks itself with its tooth 375d and its beak 375b at the same time, so that the articulated frame and the cage are released »The second pawl 274 slides with its beak 374b over the thumb 375e of the bolt 375» in order to hook it tightly into it ₉ what the! Crucible in Kückziigstellimg during the return of the tooth segment 376 of the ßelenkrahmens against

30- holds the toggle racks 32/33 or 32 ^l / 33 ^i. The bolt remains retracted with respect to the cage, the projection 34k of which comes under the snow bel 375 © of the Edigel, finally the beak 306b of the HsheXs 306 sets the.

0098.32 / 1.24 «

Letter of 9/22/69 sheet 23. Dipl-Ing. G. Schliebs

to the German Patent Office, Munich 194 8204 patent attorney

second pawl 274 back to its rest position.

The reset lever 35 »which has constantly followed the lever 31, returns simultaneously with this and leaves the movable stops in their initial position or guides them in this back · At the end of the print cycle the cam takes off 302 makes contact with the lever 304 again.

In Pig. 1 the step-by-step control 4 is now considered, which works reversibly and, with the help of two ropes 41 and 42, normally ensures the regular advance in the writing direction of the rotor 394 on the one hand, and consequently of the printing unit 5 and, on the other hand, of the stop carriage 6. The rope 41 runs over rollers 421 arranged in a rectangle with stationary axes. The rope 42 runs over rollers 411 'whose axes are the hinge points of the hinge frame 39. This rope causes a vectorial advance of the runner 394 with respect to the upper cross-member 393 of the articulated frame, corresponding to the advance of the stop carriage, and this runner slides on this cross-member. Since the step control is not part of the invention, it will not be further described. Incidentally, an example of such a mechanism can be found in French Patent No. 1,529,888.

Structure of the pressure unit. (Pig. 16 and 17)

On the one hand, a pinion 294 is longitudinally displaceable on the shaft 29, but non-rotatably mounted. On the other hand, a chassis 50 is seated on this shaft in a longitudinally displaceable and freely rotating manner two side walls 51, 51 ', which are connected to one another with two spacers and carry two shafts 52, t> 6.

The Vf eile t? 2 inserts on the left end with her donates it Gear 521 meshing with a pinion 294. To the right to

009832/1249

Letter from 22 _β 9> 69 ^sheets 24 Dlpl.-Ing. O. love of sight

to the German Patent Office, Munich 194820 ^ Patent attorney

If the shaft carries a certain number, in the selected example five, identical elastic sleeves 522 ₉ which are wedged on it and alternate with spacers 523, each sleeve has a radial slot over its entire length and a part which has two flats running parallel to the slot has through which a stud bolt passes. In addition, the sleeves have a cylindrical part, for Velchen the part with the flattened areas serves as a shoulder and on which a gearwheel 524 sits, the circumference of which is identical to that of gearwheel 521. On the shoulders of the wheel 521 and on the shoulders formed by each of the spacer disks 523, a certain number of, in the selected example six, identical pressure elements are freely rotatable. Each pressure element has two flange disks 531 »531V, which are connected to one another by an axle 532 and by two spacer bolts 533, 534. A type wheel 535 and a gear wheel 536 are freely rotatably mounted on the axis 532 and are firmly connected to one another, for example by riveting. The gears 536 of the printing elements mesh with the gears 521 and the gears 524 in such a way that the type gears 535 all have the same angular position, which is only controlled by the angular position of the pinion 294, which transmits the rotation control information.

The chassis 50 of the printing unit, on the other hand, has its front side has a wing 54 in the form of a rigid flat piece which is perpendicular to the rotary control shaft 29 is directed and free of play between * two equal directional prongs of a fork 395 inserts, which stiff with the runner 394 is connected. as shown in Fig. 17 the runner is formed by a slide with a downwardly pointing U-profile, which is placed on the upper cross member 393 of the Articulated frame 39 is seated and has a cable clamp 396 on its upper part, which is used by the step-by-step

0 0 9 8 3 2/12 48

Letter from September 22nd 69 ^Sheet 25 Dlpl.-Ing. G. Sehlieb *

to the German Patent Office, Munich 1948JÜQ 4 patent attorney

mechanism coming rope 41 holds. The sliding direction of the printing unit 5, i.e. the type wheels, ultimately results as the algebraic sum of the incremental shift and the displacement of the cross member 393 of the articulated frame, which is the displacement information of the pressure signal translates into a shift.

The so rotatably mounted on the shaft 52 pressure elements 53 are normally supported against a stop 55 of the Chassis 50 and are pulled by tension springs 551 against this stop, which on the one hand on the spacer bolt 553 of the associated pressure element and on the other hand on the chassis. are attached. About the other spacer bolt 534 is each pressure element struck with the hammer of the stop carriage, to do the actual printing, as shown below.

A sleeve 561, which works together with a fork 631, is arranged freely movable and rotatable on the shaft 56, which starts from the stop carriage 6 in order to ensure one or the other position of the printing unit 5.

The stop carriage 6 is formed by a chassis 60 with two side walls 61, 61 ′ which are connected to one another by a spacer bolt 62. The chassis is freely slidable on two shafts 63, 64 which rotate freely in the side walls 11, 12 of the printer frame. The car therefore runs like a sleigh. The cable 42 of the stepping device 4 is clamped in place with a cable clamp 65. The rope controls the direction of movement of the carriage at any moment.

On the shaft 63, its angular position by a half-turn clutch and associated elements (eccentrics, connecting rods, levers, which are not shown) is controlled, is one

009832/124 9

Letter from September 22nd © 9 sheet 26 " Dlpi.-tng. G.

to the Detitsche Patent Office, Munich 19 4BJ? Q 4 patent attorney

Fork 631 mounted, which rotatably with the shaft and unverseMeblich connected to the car. This fork works together with the sleeve 561 of the pressure unit 5 in such a way that At the beginning of each printing cycle, the shaft 63 rotates in the clockwise direction (FIG. 17), "about the printing unit in the opposite direction an Winkel.von about 30 ° to pivot, making it from the maximum retraction position (Fig. 17) to the minimum Rückugstteilung (Fig. 18) transferred.

A cam 641 with two noses 641b is fixedly mounted on the shaft 64, the angular position of which is controlled by a half-tour clutch, not shown. On the Distanzbolsen 62 of the carriage sitting a hammer 621 _β A control B21B of the hammer has an outer roller 621c, d gegen'das by an attached on. Cart tension spring 621 profile of the cam is drawn 641st When the pressure unit has reached its minimum Küekzugstellung and when the shaft 64 and consequently its crook 641 have rotated counterclockwise by an angle of about 60 °, then the striking arm 621® of the hammer is driven and in turn rotates clockwise by a sufficient amount Angle and strikes against the spacer bolt 534 of the selected pressure element and this against the paper roller 59.

The Ansehlagvorrichtung works as follows% Hur when the printing unit was 5 not remained in their minimum retracted position ₉ it is "placed at the beginning of each print cycle by triggering the clutch shaft 63 in this position the other hand, carried out the rotation control and the shift control in a gentle manner described" On At the end of the printing cycle, the release of the clutch of the shaft 64 causes the hammer 621 to pivot and the selected pressure element 53 and only this to strike against the paper roller 59. This element, which is retracted by its spring 551, then runs back against the stop 55 of the printing unit .

009832 / 124®

Claims (9)

Letter dated 22.9 69 sheet 2? Dipl.-Sng. G. Schlfeb » to the German Patent Office, Munich 19482-4 patent attorney On the other hand, the rotation control device 2 and the run Slide control device 3 back into its rest position and thereby take the lype wheels with them into their starting position return. With regard to the angular position of the printing unit 5, there are two Differentiate cases: - Is the time until a new print quality is received sufficiently long (e.g. larger than 1/10 of a lake), then sends an auxiliary clock, not shown, a special signal, which a new release of the clutch of the Wave 63 causes the printing unit to return to its maximum retracted position and reading the last posted signs permitted. - In the opposite case, the auxiliary watch does not send any special signal, and the printing unit remains in the minimum retracted position. In reality, the type wheels do not return to their starting position towards the end of the printing cycle because the step switching mechanism 4 at the end of this cycle and / or at the beginning of the following cycle shifts the runner 394 by one step and thus shifts the printing unit b and at the same time the stop carriage 6 triggers. 0 09832/1249 Letter from 22 * 9.69 sheet 23 Dlpl.-Ing. G. Schllabs to the German Patent Office, Munich 1948204 Potentanwalt Patent claims 1 · Character wheel printer, consisting of a printing unit with several Type wheels, a rotary control and a slide control device, both of which work simultaneously but independently of one another and one character with each print cycle performing and acting on decoding electromagnets encoded electrical pressure signals bring the desired character into print position, and a stop device that the set character then strikes against a paper roller, characterized in that the rotation control device (2) and the slide control device (3) have a similar mechanical structure, consisting from a single-turn clutch, a connecting rod (203 j 303) and a pivot lever (21 j 31) and two each with a toggle lever (22, 22 ·; 32, 32 ·) driven racks (23, 23 ' 33, 33 '), which engage diametrically in a pinion (291-391), also from an IT shift lever that selects the racks (26? 36), as well as one several movable ones (241, 242, 243? 342, 343) and a fixed stop (244? 344) carrying cage (24? 34}, the switching lever and the movable The stops by the electromagnets (284e, 281e, 282e - 384e, 381e, 382e) can be adjusted and the parts interact in such a way that that with a forward movement of the pivot lever the not selected rack is stopped by its knee lever buckles in the stop against the Umechalthebel, and the selected rack then only the forward movement follows, pushing back the other rack until her knee lever in turn against the feston or movable The selected stop of the cage comes to buckle, and then the selected rack or the part it controls is determined directly by a locking system (205, 27? 306, 373 to 376) .. 0 09832/1249 Letter dated 22.9.69 sheet 29 Dlpl-lng. G. Sdtüebt to the German Patent Office, Munich 1948204 Patentcmwpit 2. Character wheel printer according to claim 1, characterized in that at least one of the two control devices (2; 3) the cage (24; 34) in turn by BlektromagneTe (e.g. 283e) is adjustable in such a way that the selected movable or fixed stop selected rack has a doubled number of holding levels. 3. Type wheel printer according to claim 1 and 2, characterized in that the part controlled by the rotation control device (2) is a rotation control shaft (29) on which the tickle (29) is attached and which at the same time carries the printing unit (5). , 4. Character wheel printer according to claims 1 to 3, characterized in that the cable controlled by the sliding control device (3) is a steering frame (39), one arm (392) of which is engaged by a rack (e.g. 33) and which carries the desired information about the printing unit (5) is transmitted via a runner (394) which algebraically adds this information to the information of a stepping control (4) transmitted by a rope (41). · Type wheel thruster according to claim 1, 2 or 3, characterized in, that the rotary control device can be locked with the help of a rotatable toothed bolt (27) which is operated by the! The pivot lever (21) is actuated in such a way that it latches onto a free end (23f) of the rack (23) as soon as this is held up by the selected fixed or movable stop. 6. Type wheel printer according to claim 1, 2 or 4, characterized in that that the slide control device via an upper cross member (393) of the articulated frame (39) by means of a the pivot lever (31) pivotable bolt (375) can be locked, which with a tooth (375d) in recesses (376c) of a the toothed segment (376) carried by the upper traverse can engage. 009832/1249 Letter of 9/22 »69 '■■■ Sheet 50 _{/ ß} . Dlpl.-Ing. ©. Asleep to aas German Patent Office, Munich f 9 4 ν / U 4 patent attorney 30 ': ■. · 7 "'Uypenraddrueker according to claim 1 and one or more of claims 2 to 6, characterized in that the stop device (6) is a stop carriage that on two shafts (63, 64) runs and over a rope (42) with the step control is connected. 8. iypenraddruckei * naeh claim 1, 3 and 7, characterized _? that one (63) of the two shafts on which the stop carriage (6) runs is driven by a half-turn clutch actuated at the beginning of each Dmek cycle and, via a fork (631) and a sleeve (561), the draek unit (5) from one The maximum retraction position can be pivoted into a minimum retraction position, whereby the triggering of the return to the maximum retraction division only takes place on the basis of a signal from an auxiliary clock, which generates this only with a slow sequence of the coded pressure signals. 9. Type wheel printer according to claim 7 and 8, characterized in that that the other (64) of the two shafts on which the stop carriage (6) runs, one at the end of each print cycle actuated half-turn clutch is driven and A selected pressure element (53) from the minimum retraction position via a cam (641) and a hammer (621) puts in print " 0098 32 / 124t