DE2046158C - Device for key-operated line switching in typing machines or similar machines, independent of the carriage position - Google Patents

Description

The invention relates to a device for the key-operated. independent of the car elevator Line switching, with a carriage lift device, which is in operative connection with a line switching device via a clutch lever and with a Wagcnrückschalteinrichtung, whose car Rückschaltklinkc with the rack provided on the carriage is engageable.

In many cases it is desirable to switch a line independently of the respective car position without that before or after the line feed, a car lift takes place in the starting position. In particular When doing bookings, it is often necessary to add one or more: line spacing are to be carried out among each other.

In order to achieve this, the downshift pawl is used, for example, in a known embodiment used, which brought into a position locking the paper trolley by means of a key assigned to it, a movement when the line break and / or the carriage elevator is actuated of the paper cart prevented. In this case, however, it is necessary that the row and / or carriage lift stasi. as well as the backshift key pressed immediately / hastily and printed until the line feed was carried out being held. Deficiencies in functional reliability are not excluded, than it can happen that if the downshift key is pressed too briefly, the downshift pawl prematurely comes out of engagement from the carriage rack, so that after the carriage, n the Initial position is moved.

In "the German Auslegeschrift 1142179 is also another version became known,

ίο the one special one that can be inserted into the rack Has locking pawl, but which has the disadvantage. daj they each after the line feed Requires a retraction of the paper carriage in order for the following imprint of a character

one below the other and with the same columns as the last written characters.

The invention has set itself the task of eliminating the disadvantages mentioned. Also aims the invention, the handling of the device

ao Hing to simplify significantly and has the advantage of that during a car lift into the initial edge position in the event of an unintentional actuation the backspace key before the backrest latch snaps into place in the carriage rack of the carriage running, so that any damage to the Switching device must be avoided.

Another important advantage is above all that the one engaging in the rack Reset pawl to prevent premature sliding out, i.e. not before the line switch is completed, is secured.

With the invention, the known devices improved. The invention is based on the embodiments described above, wherein the reset pawl moves into the position that locks the paper trolley, and is characterized by that a pawl carrier which can be brought into operative connection with the clutch lever for the carriage backshift pawl a sprung control slide which can be displaced parallel to this is assigned to the one Has approach to the downshift pawl during a line switch with that located on the car To keep rack in engagement, and which is provided with a hook-like elevation. those with a right-angled bend of the pawl carrier can be brought into operative connection and that a with eini Special key for simultaneous actuation of the downshift and carriage lift key of connected angle levers is provided that cooperates with the control rail.

E. An exemplary embodiment of the invention is shown in the drawing, the parts not belonging to He findur.g being dispensed with 'vurdc. It shows
E i g. 1 is a diagrammatic representation of the device in the starting position,

F i g. 2 also locked the device Reset pawl in the rack,

E i g. 3 shows a side view of the device with a locked down switch pawl and step switch pawl vo Execution of a subsequent carriage backward stepc and

F i g. 4 also the device in the end position, the carriage with the stepping pawl eini Stepped backwards.

The facility is in a power plant Typewriter or similar machine provided.

For example, in order to set up a line feed in any wagon position without a wagon elevator in di

3 4

\ langrandstellung / u received is the well-known Der Zugdrah! 2 b of switching back

'■■■ aenaufzug- as well as the Rüeksehalttasie 1 and 2 a thereby the angle lever 5 supported on the axis 6

- Itertaste 3 assigned, which by means of the button a pivoting movement in the counterclockwise direction. the

1 3 (j provided angled flaps in the starting position on the extension Md of the control

3 c · when the special key 3 is actuated, arm 5 b of the angle lever S rests on the 5 slide 17

.ii lever 1 a. la acts. pushes the control slide 17 onto the pin

iii your return key lever 2 ei is known in 15, IS ₁ / sliding against the action of the tension spring 18

se a pull wire 2 b connected, which with its in the direction of the arrow .1.

η end at one under the action of a tensile die on the upper edge of the control slide 17-

r4 standing angle lever 5 engages. The Win- io lying and held by the tension spring 18 return

Leehel 5 is pivotable on one on the machine pawl 14 and slides over the bevel

Aengestell provided axis 6 is mounted. In addition to 17 b on the approach 17 α and comes with the tooth

i angle lever 5 is also the known. 14 «into the toothing of the carriage rack 12 for

same level can be swiveled on axis 7 emeriti. At the same time there is also the one on that

tired. diueh the Waaenauf / ugsVasAe 1 suitable, 15 control slide 17 located hook-like elevation

an extension 8 b provided coupling lever 8 17 c with the angled bent tab 161 · zux

.'the carriage return and the carriage elevator. Plant arrives (Fig. 3).

■ 'the free end of the arm 5 i; de angle- In the further sequence of movements uc angle lifting K 5

.is 5 is under the action of a tension spring 9 with the control slide 17 is now also the

■ - ". Ides holding member 10 rotatably arranged, which 20 pawl carrier 16 moves in arrow direction A (Fig. 4).

the clutch lever 8 cooperates. To the with the carriage rack 12 in engagement

, • 111 purpose is the clutch lever 8 with a downshift pawl 14 pulls / wangstieg the

ji / 8 α provided. Paper trolleys in the carriage lift direction, while the

\ n of the carriage base plate H of the well-known one having an elongated hole 13 ii and on the

and the paper carriage (not shown in more detail) is 25 bolts 20 guided in the carriage toothing 12 in

the carriage / rack 12 in which on the one hand engaging stepping pawl 13 is from

■ x'kannier way the stepping pawl 13 and the tooth gap .ν slides and from the tension spring 21 on

On the side, if necessary, the return pawl 14 to the bolt 20 is pulled in the direction of the car pull-out

iiiriif is coming. and then into the next tooth gap .v '

On / Viei under the car / rack 12 frame 30 can fall.

arranged bolts 15, 15 α are nc- Wähieiiii the pivoting movement of the angle

• iL-iiiander and a pawl carrier lever that can be moved lengthways · -5; _M also the one located in the arm 5 '.

and a control slide 17 under the action of the tension spring 9 holding

The link IO is located along the pawl carrier 16 on the clutch lever 8; emotional

Nth and rotatably fastened reset pawl 14, 35 and latched on the extension 8 ″.

with a tension spring 18 fixed to the frame. In the meantime, the function is much slower

is bound. of the wagon elevator so far that the

The control slide 17 indicates (.Learning the front end of the line feed has already taken place while now

inen increased approach 17 α . which on which the the paper trolley tries to move in the elevator direction

Kücksehaltklinke 14 facing side to move with a down 40.

-dirägun " \ ~ ib is provided. In addition, F3 is due to the fact that as a result of the locking of the angle

:: iii. the upper edge a hook-like elevation 17 c hebeis 5 with the clutch lever 8 also the rear

and at the rear ^F: .nde an angularly extending ratchet 14 in EingrilT with the rack 12

! ■ οι! Sentence 17 </. on which a tension spring 19 is attached. is held, the paper trolley can only only

As well as the 15th to the two bolts' .5, 1 45 a small distance in -mi- to-lift direction

ungsverschiebhare and two elongated holes 17 <·, Lay back. The pawl carrier 16 also meets

! 7 / aulweisende control slide 17. is the pawl - its free end 16 </ on the extension «/) of the

Weigher 16 also with two long holes 16 u, 16 h coupling lever 8 for the car elevator and

Mistake. switches this off. The clutch lever 8 leads. The pawl carrier 16 also has a clockwise pivoting movement at its 5 °

A right-angled flap on the upper edge. wherein the folding member 10 in addition to the

c. which arrives with the hook-like elevation 17f of the extension 8 ″ and the angle lever 5 again

Control slide 17 temporarily releases in operative connection.

comes. By releasing the angle lever 5, which

The operation of the device is as follows: 55 under the pulling action of the spring 4 cine!

In the rest or starting position, everyone moves clockwise to their starting position

Parts of the position shown in Fig. 1 of the drawing returns, also goes, pulled by the spring 19,

ment a. The stepping pawl 13 is the control slide 17 in its starting position back,

in this case known Pch on the carriage rack 12 while the index pawl 14 of the approach

a tooth gap, that is, a switching step, in 60 17 λ and thus out of engagement

The direction of travel of the carriage wwitei than in the preceding, rack 12 comes.

in which the last imprint of a character The return of the pawl carrier 16 with the

is done. With the depression of the special button 3 Rückschaltklinkc 14 takes place in the starting position

the key levers 65 tension spring 18 are at the same time the key lever 65 tension spring 18 through the lent tabs 3 b, 3 c located on the reset pawl 14.

Ι «, la the carriage elevator and the back button 1, 2 with the removal of the reset pawl 14 off

actuated, whereby the known and not shown the toothing of the carriage rack 12 tries

Drive triggers the functions at the same time. Paper cart to move in the direction of writing.

feed, which by the stepping pawl located in F.ingrifT 13 is limited.

F. is in a special step of the paper car damil is no longer required after the line has been split in order to print a Characters one below the other and with the same column as the / last on the previous line to get characters.

Of course, changes and improvements can be made to the execution described can be taken without leaving the scope of the invention.

1 sheet of drawings

ti Z d se

Claims (2)

Patent claims: 1. Device for key-operated line switching, independent of the car elevator, with a car elevator device which is in operative connection with a line switching device via a coupling lever and with a carriage reverse switch device, the carriage return pawl of which engages with the rack provided on the carriage, characterized in that, that a pawl carrier (16) for the carriage return pawl (14) that can be brought into operative connection with the clutch lever (14) is assigned a spring-loaded slide (17) which can be moved parallel to this, iL-r has a saddle /. (17 ti) to keep the reset pawl (14) in engagement with the rack (12) located on the carriage during a line switch, and which is verselu η with a hook-like elevation (17 c) , which is connected to a right-angled bend (16 c) of the pawl carrier ( 16) can be brought into operative connection and that a special key (3) for simultaneous actuation of the downshift key (2) and the car lift button (I) connected toggle lever (5) is provided. which cooperates with the control rail (17). 2. Apparatus according to claim 1, characterized. that the Steucb ': over (17) is provided at a free end with a bent projection (17 t /). which is in active connection with an arm (5 h) cies angled lever (5) of the downshift device.