DE1611437A1 - Type head setting device on power-driven typewriters or similar office machines - Google Patents

Description

ti11437

THOROUGH EMC
MECHAFFL ROPES EXPERIMENTAL INSTITUTE

Owner Max Grundig
Fürth (Bavaria), Kurgart ens t FaOe 37

TPA / Lh / Fri / SOt T July 4th

Type head adjustment device on power-driven typewriters or similar office machines.

The invention relates to a type head adjuster on power-driven writing instruments or the like Office machines, through which each type is selected and by swiveling the entire type head can be brought to a print site for printing.

Setting devices for a type head, which is composed of several individual type disks or wheels, are known several times in printing calculating machines. With these type heads, however, the axis of rotation of the type carrier is parallel to the axis: the platen, each type disk contains all printable characters and is set and struck individually. This makes the setting and printing mechanism of the printing unit very expensive and complicated. "Since all characters to be imprinted are applied to each individual font, this type of type carrier is not suitable for reasons of space, for reasons of space to accommodate as large a number of characters as are necessary for a typewriter.

With type cylinder typewriters there, the ^ cylinder axis a right angle with the writing shaft

ORiSlNAL IHSPECTSD

161143?

TPA / Lh / Fri / SOI 1h. July T96?

forms the type carrier is usually made in one piece or is composed of several .Einzelringen that are rigidly connected to each other, IJm to bring a certain character to imprint with such type triggers, it is necessary to move the type cylinder by large distances on its axis. The characters arranged in rows on top of one another on the cylindrical surface of the type head must be so far apart that only the characters π of a row are printed with certainty and not additional parts of the characters arranged above or below. The length results from these reasons; of the type cylinder, the distance arranged on its surface character strings and \\ eg, oclei lifted by which the type cylinder ¹ must be lowered in order to switch from one character set to an arbitrary 'other character font string. On the other hand, however, the diameter of the platen cannot be kept too small in order to avoid unwanted printing of parts of the characters, since recording media made of thicker material would otherwise be deformed too much during clamping and might even bend or break,

The object of the invention is to avoid these disadvantages and a type head top device of the specified Type to be designed in such a way that the type carrier has the smallest possible spatial expansion,

009886/0458

- 3- 1811437

TPA / Lh / Fr / 801 July 14th Ϊ967

the mass moved during the printing process is kept small and that for setting the selected character The distances to be traveled are short, In addition the character carrier should not have any influence on the size of the platen durometer.

According to the invention, this object is achieved by that the type head consists of individual type disks arranged on a common support axis, rotatable and displaceable in the printing direction. In order to set up the characters as quickly as possible »it is useful if during the switchover from one to the other type series, to select a specific visual pen, at the same time the shifting of the individual slices to each other takes place. The invention Apparatus can of course be used both with fixed Platen and movable type carrier as well as the other way round.

For more inventive features and details go to from the following description of an execution match of the subject matter of the invention liervör, which is shown in Figures 1 to 7.

It shows: ■,

Fig. 1 one, arranged in a Triigteil

Type head in a graphical representation,

2 shows a plan view of a type head in the printing position of a character arranged on one of the lower type disks.

009886/0458

161 U37

TPA / Lh / Pr / 801 Η. July 1967

Fig. 3 is a plan view of a type head at the printing position of a character arranged on the upper type disk,

¹ Fig. H is a side view of a type head shown in section with the upper or first type disk in the imprint position,

Fig. 5 is a side view of a type head shown in section with the second Type disc in imprint layer,

Fig. 6 is a side view of a section

type head shown with a lower or the third type disk in the imprint position and

7 shows a side view of a type head shown in section with the lower one or fourth type disc in the imprint position,

In the diagrammatic representation according to FIG. 2, the arrangement of the type head is in front of the platen shown, with the setting and hitting of a selected characters required actuators, but without the well-known writing keys and means for generating the adjustment paths for the type head. With the well-known typewriters with a common type carrier the platen is generally not displaceable * while the type head is moved along the platen,

_ ■ -. ■ '■ - 5 -

009886/0458

161 U 37

TPA / Lh / Fr / 80T

■ ik. July 1967

The type head 1 according to the invention is attached to a hollow support tube 2 or 2a or joined to it by a detachable connection. The support tube 2 has a toothing 3 on its circumference and at its lower end a collar 4 and an adjusting ring 51 between which a ring 6 is guided, which has two suspension pins 7. Inside the support tube 2, a control axis 8 is guided so that it can be longitudinally displaced . The unit, type head 1 and support tube 2, is mounted in a frame 9 so that it can be rotated and adjusted in height. The frame 9 is pivotably connected by means of the bearing journals 10 to a carriage 11 which is only partially shown and which is guided along the platen in a known manner. Moreover greiftineiner recess 12 of the Rahmens9 an actuating rod I3, for example, electromagnets, not shown, with a for pivoting of the frame 9 is connected is "A! Performing adjustable 25ähnstange \ h is of the type head 1 for performing the rotational movement by means of a not därgestettten Einetel.

Dör building of the type head 1 Is; t can be seen in detail from FIGS. 2 to 7. Of the? Type head! Consists of preferably four type discs 15 _f 16> 17 and 18, which miitoi · of the bearing rings 19 qnd the balls 20 "on arranged eccentrically to the center axis of the Traßrohres 2 Lagerf1Hohen 21 of the control shaft are mounted. 8 IIIe Daisywheels 15,16,117 and 18 are between an upper flange 22 and a lower flange 23,

009886 / 0A58

16-37

TPA / Lh / Fr / 801

1 '+. July 1967

which are both arranged on the support tube 2a, held. In FIGS. 2 and 3, with the upper flange 22 removed, the bearing parts and guides of the type disks in front of the platen Zh are shown from above. According to FIG. 2, one of the type disks 16 or 18 on the platen 2 h is in the printing position and, according to FIG. 3, one of the type disks 15 or 1? ^; ichen 21 of the control axis 8 and on the bearing fingers I9 and on the other hand through the bolt 26 in the elongated hole 25. The spacer rods 27 and 28 determine the exact distance between the upper flange 22 and the lower flange 23 together with the bolt 26. To allow the type disks to pivot In order to enable the bolt 26 as a fulcrum, the recesses 29 and 30 are provided in the type disks 15 * 16, 17 and 18.

So that the surface of the individual characters in the imprint position lies exactly against the surface of the platen, each character * is arranged on the circumference of the type disk in such a way that it fulfills this condition, taking into account the two bearing points 2 , 26, which determine the position of the respective type disk. Fulfills.

In Fig. 7 is in principle · a possibility of detachable Formation of the type head shown. The carrying

0098 8 6/0458

161 U37

TlVl / üi / Fri / 801

l'j. July 1967

The pipe in this case consists of a flange part '31 and a pipe 3 ~ V which are joined together by a screw connection or the like. The axis 33 and the bearing piece k, which are detachably connected to one another by a plug-in connection 35, consist of an axle 33. To change the type head, just ^{remove the stick connection 35 ZL} *, after which the type head T with the type keys 15 to 18, the LaKerstück Jk and the flange part 31 can be removed from the Hohr 32. ■

In summary, the function of the invention Type head with type disc setting device based on the required individual movement sequences are described * ■ "" "/

1. All type disks 15 »-Tß't t-7 '. And 18 are through the rack 14 and the toothing 3 on the Support tube 2 twisted together until the selected Character of the platen 24 is opposite. The necessary to carry out the setting movement For example, button-operated selectors are known in various forms. The same is therefore not shown *

2V The type _{disc t,} which bears the selected character, is adjusted in height relative to the platen 2k by shifting the support tube 2. This movement is brought about, for example, by a single magnet, not shown, which engages the suspension pin.7 of the ring.

BATHROOM GBI6INAL ₈ _

98 8 6/04

_ ₈ _. 161.U37

TPA / Lh / Fr / 801 1 ^. July 19 ^ 7

V / io can be seen from Figures h, 5, 6 and 7 ^ u, the type disc to be imprinted lies closer to the platen than the neighboring "type discs. This is caused by the design of the control axis 8 and its displacement. The bearing surfaces 21 on the control axis H are arranged eccentrically opposite the center of the control axis 8 in such a way that the type disks mounted next to one another are offset from one another Control axis 8 around the width of a type disk is required -.ierachse 8 by a type disk width opposite the support tube 2 moved downwards (Fig. 5) ·

After setting the character to the platen the actual print movement, which is transmitted from the actuating rod 13 to the frame 9, takes place is who together with the support tube 2 the The type head is swiveled and the selected character is printed. J3in this pivoting movement

0098 8 6/0458

" ⁹ V IS 11437

H; July 1967

of the type head 1. around the pin 7, the toothing 3 fully engages the teeth of the adjusting rod lh. a, whereby the only extended print position of the type head is finally centered. Before the characters are imprinted, there is air between the toothing 3 and the adjusting rod 1A.

From the above description of the structure and the The way of operation is the setting of the in a simple way by means of the orf indungsgeinäßcn type head characters to be printed with extremely short adjustment paths enables »- The type head itself has one very small and compact design, as it is possible through the construction according to the invention - the type disks to be in direct contact with each other and to keep the width of the type discs only so large, like the height of the characters »Besides, he is Diameter of the type discs reduced to a minimum, which results in a lower moment of inertia of the type head. Thus the most important Requirements for achieving high scribing speed digkoiten, namely low mass and smallest Abiriessungert de »Type carrier, achieved in a simple manner. The weight of the type head can be advantageous ej by further degrading the type washers aifs plastic and only the bearing ring 19 made of steel has been manufactured.

In a modification of the example shown of the device according to the invention, it is also possible to arrange only one eccentric on the control axis, whereby 'each

- 10 -

009886 / 04SB

, 161U37

TPA / Lh / Fr / BOl U. July 1967

only one type disc is swiveled out »This the type head can also be used if its longitudinal axis is parallel to the axis of the platen lies.

Pu tent a ηsρ r i i c hο

00988S / 0A58

Claims (1)

GUUNDIG EMC
ELEKTUO-MECIIANISCIIE VEHStTCIISANSTALT Inh. Max Grund ig
Fürth (Uayorti), Kurgartenstrasse 37 TPA / Lh / Fr / Hqt- i'l ·. Jail 1967 Pa t ο η t an s ρr t i ehe Typenköpfeinstellvorrichtung on power is trio Bonon write odor similar BürOinaschinen, dtirch respectively selected a typo and can be brought by pivoting the gesaintun type head for placing a printing position, characterized ge ke η n ζ calibration net dai3 type head (ι) consists of individual, on a common Support axis (2) arranged, rotatable and in AbdiVickrichtuug movable type disks (15,1 ^ i 17,1B) consists. 2. Type head ejLns part vorri eh tang according to claim 1, characterized, that in the dismantling position ■ the axis of rotation of the type disks (z.13. 13), which selected the previous print Type tends to the axes of rotation of the neighboring Type closures or to the Drehaclise of the neighboring type disc in direction is offset to the platen axis. 3. T> ^r penkopfeinstoilvorrichtung according iUisprüchen 1 and 2, dadu rc hgeken α "κ calibration et n, that the center points of the respective ■""adjacent Typenseheibeii (1 5, 1 6; 16-17; 17, 18) on any common axis lie. BAD ORlQfNAL 09886/0458,,. TPA / Lh / Fr / 801 July 14th Ι967 Ί. Type head setting:! Device according to claims 1 up to 3, thereby g e k e η η ζ ο i c h net, that the type washers (15,16,17,18) in a support part (2a, 22, 23) in the axial direction fixed, but stuck in the radial direction by means of the bearing surface (21) and the guide (25,26) are arranged bar. 5. Typenkopfeinstellvorrichtung according to claims 1 to 4 _f . characterized in that the control axis (8) of the type head (1) has a plurality of bearing surfaces (21) on its circumference, the centers of which are eccentric to the center of the control axis (8). 6. TypcnRopfeinstcllvorrichtun: according to claims 1 to 51 characterized in that the mutually eccentric bearing surfaces (21) are connected to the circumference of the control axis (8) by means of scliriger start-ups. 7. Type head adjustment device according to claims 1 to 6, characterized in that the bearing surfaces (I9) on the type disks and the control axis (8) are narrower than the thickness of the type disk !!. 8. Type head adjustment device after speeches 1 to 7, characterized in that the type disks (15,16,17,18) 0-9 886/0458 o ^ .. · ■ · is ■■■. ■■ / TPA / Ltt / Fr / 80t -tk. July 196? donLagerflachen (21) of the control axis
are mounted by means of feützkörper (20). 9 · - "type head one te Llvori'ichtung according to claims 1 to 8, dad ύ rchgeke η η ζ η et verifiable that the type of head" (i) van der support shaft (2) formed abnehhibar ISL. 10. Typenkopfeinstoiivorrichtung according to claims 1 to 9 »since durchgekc n- ii ζ calibrated net that ύϊο designed as a crankshaft
Steueraehso (8.3'l ·) is rotatably mounted with the eccentric Liigerfiaehan (2t). 11 .. Typenkopreinstellvox'richtung according to claims 1 up to 10, d a du r c h g-.e k e η η ζ e i c h net that the Steueraclise (8) an eccentric Layer rf pool (21), each with a inclined contact surface since Lieh. BATH ORIGINAL 8S6 / Q45S 4 ¥ Lee on the back