DE1436672A1 - Step control device for power-driven typewriters and similar machines - Google Patents

Description

IBM Germany InUmationaU Baro-Mmdiinen GettlUthaft mbH 1 436672

Boeblingen, July 24, 1968 wi-oc

Applicant: International Business Machines

Corporation, Armonk, N.Y.10,504

Official file number; P 14 36 672.4

Applicant's file number: Docket 11 136

Step control device for power-driven typewriters and similar machines

The invention relates to a switching step control device for power-driven Typewriters and similar machines with one of the width of the individual letters adapted variable carriage step size and several, different step sizes assigned space keys as well as with transversely running through the machine, Swings assigned to each switching step size.

Typewriters matched with the width of each character as Buchetaben, numbers and special characters, variable step size cars, even old typewriters designated proportional circuit, have over the typewriters with constant car step, various benefits that

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open up extended application possibilities for them. Apart from ¹ of a particularly appealing typeface, it is with these machines z. It is possible, for example, to write individual parts of the text in a blocked manner »without» as with standard typewriters the blocking script has a disruptive effect »and to exclude the right edge of the line so that the right edge of all lines is also aligned vertically.

The jogging for the car of such typewriters works with a relatively small »basic step called a switching unit, and a different number of switching units is assigned to the individual letters »for example 2» 3 »4 or 5. ',

Switching units, depending on the width of the letter. With the known machines ■

there are usually two space keys arranged »one of which is a space of two units and the other causes a blank step of three units, and with the help of which the word spacing can be corrected. which is particularly necessary when excluding lines.

However, individual known typewriters are also equipped with a Sptrrschrifteinrichtung. This is due to one of an ineffective te an effective position adjustable lever is switched on and causes »everyone individual switching step is automatically increased by one damage unit. This" "! Barring font facility is therefore both when a character key is pressed « as well as when pressing a space bar.

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However, it is often desirable to only add the spacing between individual words without writing the words themselves in barren script. You can achieve this by doing a Space bar switches on the barring device «however, this constant switching on and off of the barricade lever is cumbersome and time-consuming. But it would also be just as inconvenient «if you had a The space bar would have to be pressed twice, for example 2 to achieve a four-unit word spacing the two-unit spacebar twice. The known devices for increasing the switching step are therefore unsuitable if you want to write «e.g.» with columns of numbers with increased spacing between words with increased space between the last digit of a number and the first digit of the following number without using the tab or when excluding the lines «if only the word spacing is increased should. * -

'The invention of this deficiency is the known typewriters comparable Λ avoided and proposed a device which enables the continuous · Text only Wortab $ tände automatically enlarges to write, while even the normal step circuit is effective when writing of the individual words. The invention is characterized in that over the swing, the transverse

"_ Run through the machine and are each assigned to a switching step size,

° a by means of a bistable space step magnification lever into a normal
cd position and an active position adjustable frame is arranged in which

Q Active position in each case one of the levers encompassing the rocker arms in the path of movement co

can be pivoted by several, by pressing selected space keys Operating brackets are adjustable.

New registration documents

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The device according to the invention is simple in construction, contains only Easily manufactured parts without special requirements for tolerances and works reliably without any special maintenance effort. It is also in retrofitting existing typewriters without affecting the constructive Arrangement of existing parts and assemblies must be changed. Another advantage of the invention is that it is independent of the known barring devices works and supplements it in a meaningful way.

According to a particularly advantageous embodiment of the invention the levers on their underside each have a U-shaped leg encompassing the associated rocker and are in the operative position of the frame by means of a a rail forming a longitudinal side of the frame against the force of a spring tensioned between the frame and the lever in the direction of the U-shaped leg adjustable. According to a further advantageous embodiment of the invention, the levers are U-shaped by means of their means Upper side mounted on a common axis so as to be longitudinally displaceable.

The features of the invention and its embodiments are ¹ explained below with reference to the drawings, in one embodiment. Show it:

Fig. 1 is a perspective view of the space keys and their associated Transmission parts for controlling the car empty steps with a known power-driven typewriter Proportional step, seen from the bottom of the machine, with the front of the typewriter at the top in the figure,

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FIG. 2 shows part of the idle step control device shown in FIG

and the device for enlarging the individual blank steps, partly in an expanded arrangement, from the left Side of the typewriter, with the front of the machine at the top right in the figure,

Fig. 3a-3e different working positions of the enlargement of the Three-unit blank step effecting essential parts of the blank step enlarger from the left side of the Machine seen from and the

Fig. 4a-4e different working positions of the enlargement of the Two-unit blank step effecting essential parts of the blank step enlarger from the left side of the - Seen from the machine.

For an improved understanding of the invention, reference is first made to FIG.

a known space key arrangement is described. At the top of 1, which corresponds to the front of the typewriter, there are shown space keys 2 and 3 which, as will be described, mechanically step with the carriage Switching device (not shown) connected / so that optionally a car empty circuit of two to three units can be triggered. the Two-unit space bar 2 is attached to brackets 6 and 8, which are attached to a bearing rod 10, which in turn has one at both ends Has cranking and rotatable with these in the typewriter frame 12

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is stored. Dsr right angle 8 is the two-unit space bar 2 also screwed to a lever 14 which is pivotable at its opposite end on a bolt 16 in the typewriter frame is stored. One between lever 14 and typewriter frame 12 The tensioned spring 18 pulls the lever 14 continuously upwards. The space bar 2 is thus also held in its upper position via the angle 8. Through the Spring 18 is also the bearing rod 10 is tensioned relative to its bearing points in the clockwise direction, since the action of the spring 18 via the angle 6 and 8 is transferred to the bearing rod 10. When pressing the empty, button 2 thus the bearing rod 10 is pivoted counterclockwise «

The other space key 3 is designed as a three-unit space key and, like the two-unit space key 2, is mechanically connected to the carriage step switch device (not shown). The three-unit space bar is attached to a transverse lever 20 which is rotatably mounted in the frame about a bolt 22 and executes a corresponding pivoting movement when the space bar 3 is pressed 14 and is also pivotably mounted in the typewriter frame 12 about a bolt 26. The lever 24 _v, which is drawn upward by a attached to the typewriter frame spring 30 has an angled extension 28. Upon actuation of the three. " Unit space bar 3 are pivoted against the force of the spring 30, the transverse lever 20 and the lever 24 about their bolts 22 and 26 »whereby the

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Approach 28 is lowered. There is also a bumper 34 on the lever 24 hinged like a fork, which is pressed down when pressing the three-unit space bar.

The pivoting movement of the bearing rod 10 and the projection 28 acts on a lever 32, which like levers 14 and 24 on its opposite The end is mounted pivotably about a bolt 36 in the frame 12. When one of the space keys 2 or 3 is pressed, the lever 32 is counteracted the force of a spring 38 through the extension 28 or the bearing rod 10 pivoted downwards; a cam release tappet 40 hinged to it is pressed downwards. At the lower end of the cam release tappet 40 a control cam device 44 is provided, consisting of a cam carrier 46 with a cam body rotatable about a pin 49 The cam carrier 46 is rotatable in the typewriter frame by means of a bolt 42 12 and is pivoted downwards via the cam release tappet 40 each time one of the buttons 2 or 3 is pressed.

The cam body 48 is located a short distance from the constantly rotating drive roller 52 of the typewriter. When one of the space keys 2 or 3 and the cam release tappet 40 are pressed, the is on this articulated lever 41 rotated about a pin 43 mounted in the side walls of the cam carrier 46, its other end being the Cam body 48 releases so that it is rotated slightly counterclockwise by a spring (not shown) and to cooperate with the drive roller 52 is brought. According to the shape of the cam

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body 48, this is then rotated through an angle of approximately 180 and then lifted off the drive roller 52 again; at the same time the lever 41 arrives - as a result of the return of the lever 32 and the plunger in the initial position '- in its locking the cam body 48 position. When the control cam device 44 becomes effective, two Handlebars 60 and 54 are actuated, as can be seen from FIG. 1, in arrows 61 and 55 indicate the direction of actuation of the two handlebars 60 and 54. The power-driven actuation of the handlebar 60 in the direction of the Arrow 61 indicates that the indexing device (not shown) by two units.

At the same time, an operating lever 56 is on the handlebar 54 by an im Frame 12 stationary axle 62 pivoted, namely counterclockwise and against the force of a spring 58. The actuating lever 56 has two legs 64 and 66, of which the former is movable with the Handlebar 54 is connected and the second an angled at its end Approach 68 has. However, the pivoting movement of this projection 68 only has an effect when the three-unit space bar 3 has been pressed.

Accordingly, the handlebar 60 is used exclusively to trigger a two-unit switching step and the handlebar 54 and the operating lever 56 only for a three-unit shift step.

For triggering the three-unit switching step of the carriage is the Bumper 34 connected at its lower end to a lever 70, the

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- 9 - ** P 14 36 * 72.4

P 14 36 * 72.4

is in turn rotatably connected to a rocker actuating lever 72. If the lever 24 is pivoted when the three-unit space bar 3 is pressed and the push rod 34 is pushed downwards / there is also a downward pivoting of the intermediate lever 70, whereby the front end thereof is set in the path of movement of the extension 68. If now, as described, the lug 68 swings toward the rear of the machine, it gives movement to the adjusted lever 70 which causes the swing operating lever 72 also pivots backwards, whereby the three-unit rocker 74 is actuated. This in turn brings about more Lever connections enable the carriage to advance by three units.

The three-unit rocker 74 is designed as a horizontal rod and mounted with their cranked ends in two rocker plates 76, of which only the right one is visible in FIG. 1. In the swing arm plates there are two more rockers, a four-unit rocker and a five-unit rocker 80. All three rockers are by means of three Handlebars 82, 84 and 86 connected to the car switch gear (not shown) and, when actuated, cause three or four car shifts or five units. The two-unit circuit takes place, as mentioned, via the handlebar 60 and without the involvement of the rocker.

In the arrangement described so far, the two-unit circuit is used triggered via the handlebar 60 and without the involvement of a rocker. In any case, pressing the spacebar, regardless of which spacebar

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was actuated, the projection 68 is also pivoted to the rear (rear side of the machine) via the control cam device 44; if the three-unit space bar was pressed, it causes the lever 74 to be actuated via levers 70 and 72, otherwise its pivoting movement has no effect.

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In the illustration according to FIG. 2, some of the parts coincide with those in FIG. 1 and are labeled identically, so that their function need no longer be described in detail. More clearly than in FIG. 1 , however, FIG. 2 shows how the actuating lever 56 is rotatably mounted on the axle 62 with the upper end of its one leg 66. The angled extension 68 of the leg 66 swings, as already explained, "to the rear of the machine, as often as the actuating lever 56 is swiveled about the axis 62 in response to the actuation of a space bar. If only the two-unit space bar 2 has been pressed, the extension 68 swings past below the lever 70, so that only the two-unit car control operated by the handlebar 60 is triggered. When the three-unit * space bar 3 is pressed, however, its downward movement is also transmitted to the bumper 34 »in order to set the lever in the path of the projection 68 of the actuating lever 53 and thereby cause the rocker 74 to be actuated»

In addition, the rockers 78 and 80 and the associated ■

Handlebars 82, 84 and 86 visible. ··

In addition to these parts in common with FIG. 1, an empty step enlargement lever 90 is provided on the keyboard in FIG. 2, which acts as a rocker arm

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formed and under the action of a spring 98 in two stable positions is adjustable, a normal position and a position "space step enlargement". The space step enlarging lever 90 is in a bearing lever 02, and both levers 90 and 92 are around one in the typewriter frame 12 fastened bolt 94, which is inserted through the frame 12, the front end of the bearing lever 92 and through the lever 90.

When adjusting the space step magnification lever 90 in its effective Position it is pivoted clockwise around the bolt 94 and takes while the bearing lever 92 connected to it. On the middle part of the bearing lever 92, a link 96 is articulated, which is pulled in the direction indicated by the arrow 97, and one on the axis 67 rotatably mounted by means of its opposite short sides 102, 104 rectangular frame 100 pivots clockwise. The side of the frame 100 running parallel to the front of the machine forms one Rail 106, the back side 110 of the frame 100 contains a pair to the inside of the frame, that is, projection 112 and 114 protruding toward the front of the machine are provided. There are also two levers 116 actuated by the rockers and 118 provided. The lever 116 (cf. also FIG. 3) carries on its underside a U-shaped leg 120, by means of which it the four-unit rocker 78 wraps around. The lever 16 is mounted on the axle 62 with a second U-shaped part 122 on its upper side. Also located on the lever 116 two approaches 124 and 126, of which the approach 124

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the underside of the rail 106 (Fig. 3), and i was under the effect a spring 128 tensioned between the projection 112 and the lever 116, which constantly pulls the lever 116 upwards.

The second lever 118 which can be actuated by a rocker arm is the lever 116 designed similarly and has a U-shaped leg 130 by means of which it loops around the rocker 74, and an upper U-shaped leg Part 132 with which he as well as the lever 120 on the axis is stored. Two lugs 136 and 138 of the lever 118 correspond in their arrangement to the lugs 124 and 126, respectively, of the lever 116 Rest of the approach 124 on the underside of the rail 106 by a Spring 140 is effected.

Furthermore, the arrangement according to FIG. 2 contains two operating brackets 150 and 152. The bracket 150 forms part of the actuating lever 56 and follows its movements. With its other end is the arm rotatably mounted on the axle 62, and in the middle between its ends it carries a tab 154. When the lever 56 pivots backwards, in 2 to the left, the arm 150 goes with it and the tab 154 on the arm 150 swings downward in an arc to the rear. Located to this time when the lever 56 is under the action of the handlebar 54 pivots, the idle step magnification lever 90 in its normal position, so the frame 100 is substantially horizontal and the levers 116 and 118 remain in their upper position by the springs 128 and 140 (FIGS. 3a, 4a).

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The projection 138 on the lever 118 lies a little above the range of motion of the tab 154 so that it can move freely under the extension 138 without causing the lever 118 to move (FIG. 4b). However, if the lever 90 is depressed, i. E. in the position "empty step enlargement ¹¹ , the frame 100 is pivoted clockwise about the axis 62, and the levers 116 and 118 are pushed downwards (FIGS. 3c, 4c). The downward movement of the lever 118 causes the extension 138 to reach the Movement path of the tab 154 (FIG. 4c), so that it pivots the lever 118 to the left when the two-unit space bar 2 is pressed (FIG. 4d), whereby the three-unit rocker 74 is actuated.

The other actuating bracket 152 (FIG. 2) is rotatably mounted in the same way with its left end (FIG. 2) on the axle 62 and is connected at its other end to the rocker actuating lever 72. A tab 160 is arranged in the middle of the bracket 152. As already explained, the rocker actuating lever 72 is pivoted clockwise when the three-unit space bar 3 has been actuated, and thus also the tab 160 on the bracket 152. Whether or not the tab 160 actuates its associated lever 116 depends, in turn, on is whether the approach 126 calibrated in the movement path of the tab 160, depending on the respective position of the frame 100, depending on the lag · dee idle step magnification lever SO. If this is in its normal position, ie not inclined, the tab 160 can move freely under the extension 126 when the three-unit space bar is pressed (FIG. 3b). If, however, the lever 90 is pressed, that is to say in the "empty step enlargement" position (FIG. 3c), then the projection 126 is

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in the path of movement of the tab 160, and this actuates the lever 116, see above that when you press the three-unit space key 3, the four-unit rocker 78 (Fig. 3d) is actuated.

If the space step magnification lever 90 is in its operative position, so So when you press the two-unit space key, it becomes a carriage circuit triggered by three units and when the three-unit space key is pressed, a four-unit car circuit is triggered. All void steps are therefore increased by one unit.

The functionality described is independent of / whether the type lever cage is the typewriter is in the normal position or - for capital letters in the switch position. When pressing the shift key (not shown) the rocker plates 76 are raised with the rockers 74, 78 and 80, for which the plates 76 are mounted in vertical guides. From Fig. 3e and 4e it can be seen that due to the formation of the legs 120 and 130 even after this lifting of the rocker arms 74 * 76, 78 the corresponding "

Swings 78 and 74 are carried along by the U-shaped strings 120 and 130 of the levers 116 and 118, respectively. .

In the following, the various possible functions of the device are once again summarized, and in particular with the aid of the '

Figures 3a to d and 4a to d. ~ '··. ■

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To switch between two units, press the space bar 2 and the Space step magnification lever 90 remains in its normal position. As a result, the control cam device 44 is triggered via the lever 32, which in turn the handlebars 54 and 60 operated. While the via the handlebar 54 to the operating lever 56 transmitted pivoting movement remains ineffective, a two-unit Wagaisehaltüng via the link 60 leading directly to the indexing device triggered. The ineffectiveness of the movement transmitted by the handlebar 54 is due to the fact that neither the lever 70 and the swing operating lever 72 have come into their operative position (since the three-unit space bar 3 has not been pressed) nor one of the levers 116 or 118 actuated is, since the empty step enlargement lever located in its normal position holds the frame 100 in its inoperative position (Fig. 3a, 4a).

For three-unit car switching, press the space bar 3 and the Empty step enlargement lever 90 again remains in its normal position. Via the bumper 34, the rocker actuating lever 72 is in the Brought away from the approach 68 and at the same time again via the control cam device 44 the. Actuation of the handlebars 54 and 60 triggered. A two-unit step circuit is triggered via the handlebar 60, but at the same time also through the approach 68 on the rocker actuation lever 72 the Three-unit rocker 74 actuated so that a three-unit stepping operation takes place (see. Fig. 3b). As shown in FIGS. 3b and 4b, the pivoting movement of the actuating brackets 150 and 152 is not transmitted to the levers 116 and 118, since the frame 100 is now in its inoperative position.

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To increase the two-unit space by one unit, the lever 90 is moved into its position "space step enlargement" and the two-unit space bar 2 is pressed. The pivoting movement of the operating lever 56 via the link 54 remains ineffective with respect to the lever 70, so that the projection 68 passes the rocker actuating lever 72, but the projection 138 of the lever 118 is now in the path of the tab 154 (FIG. 4c), since the rail 106 of the frame 100 has changed the position of the levers 116 and 118 accordingly. According to FIG. 4d, the three-unit rocker is therefore via the lever 118 74 actuated, while the actuating bracket 152 with the tab 160 is not pivoted and therefore with respect to the lever 116 and the four-unit rocker 78 remains ineffective.

Also to increase the three-unit space by one unit the lever 90 is adjusted to its "empty step enlargement" position and now the three-unit spacebar 3 pressed. Now is about the The bumper 34 and the lever 70 of the swing arm operating lever 72 are effective and simultaneous with the two-unit stepping over the handlebars therefore the three-unit rocker 74 is also actuated. Also will now

but also the two operating brackets 150 and 152 pivoted and as a result the inclined position of the frame 100, the levers 116 and 118 are in the way the tabs 160 and 154, so that both rockers 74 and 78 are actuated, where the four-unit rocker 78 dominates and a four-unit step-by-step circuit triggers (Fig. 3d, 4d).

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Claims (3)

New anme ^ clun§suäUöfi £ igen Docket 11 136 patent claims 1. Switching step control device for power-driven writing and the like Machines with one adapted to the width of the individual letters variable carriage step size and several »different step sizes assigned space keys as well as with transversely running through the machine, Swings assigned to each switching step size, characterized in that a bistable by means of a bistable Empty step enlargement lever (90) in a normal position and an operative position adjustable frame (100) is arranged in its operative position levers (116, 118) encompassing one of the rockers (74, 78) each in the path of movement are adjustable by several actuating brackets (150, 152) which can be pivoted by actuating selected space keys (2, 3). 2. Device according to claim 1, characterized in that the levers (116, 118) on their underside each one, the assigned rocker (78, 74) around- ^ 2 gripping U-shaped legs (120, 130) and in the operative position ο of the frame (100) by means of a rail that forms a longitudinal side of the frame ο ^(1Οδ) g ^e g ^ei * dte force per one between 'frame (100) and oo c lever (116, 118) tensioned spring (128, 140) in the direction of dea U-shaped ο. - OO. ' Legs (120, 130) are adjustable. vt ~ _{>> A} bobbin thread tArt.7 8iAbs, 2Nr.l sst ₂ 3 Φ39Äraferunqeq «* v.4» 9.1. 3. Device according to claims 1 and 2, characterized in that the levers (116, 118) by means of their U-shaped upper side (Parts 122, 132) are mounted on a common axis (62) so that they can be longitudinally displaced. 809809/0613