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Publication numberUS3718243 A
Publication typeGrant
Publication dateFeb 27, 1973
Filing dateNov 10, 1971
Priority dateNov 13, 1970
Also published asDE2055838A1, DE2055838B2
Publication numberUS 3718243 A, US 3718243A, US-A-3718243, US3718243 A, US3718243A
InventorsChvatlinsky K
Original AssigneeOlympia Werke Ag
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Apparatus for storing typing commands given in too rapid succession by keys
US 3718243 A
Abstract
Code bars having first and second opposite edges with coded projections, are located between spring-biassed interposers and storing slides. When a key releases a selected first interposer, it engages corresponding first code projections of corresponding code bars and displaces the same so that storing members are displaced in accordance with the second coded projections. A typing operation is carried out under the control of the storing members, while the first selected interposer is driven back to its position of rest, and out of the locking means, so that a second selected interposer, whose key was operated during the printing operation, and which was blocked in a waiting position by the locking means, can enter the locking means and cause another printing operation.
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Description  (OCR text may contain errors)

1 1 Feb. 27, 1973 1 APPARATUS FOR STORING TYPING COMMANDS GIVEN IN TOO RAPID SUCCESSION BY KEYS [75] Inventor: Kurt Chvatlinsky, Wilhelmshaven,

Germany [73] Assignee: Olympia Werke helmshaven, Germany [22] Filed: Nov. 10, 1971 [21] Appl. No.: 197,322

AG., Wil- [30] Foreign Application Priority Data Nov. 13, 1970 Germany ..P 20 55 838.7

[52] US. Cl. ..197/16, 197/17, 197/193 [51] Int. Cl. ..B4lj 23/02 [58] Field 01 Search ..197/l6, 17, 193

[56] References Cited UNITED STATES PATENTS R26,954 9/1970 Greene ...l97/17 X 2,252,004 8/1941 I-Ielmond.... ....197/193 X 2,255,029 9/1941 Tholstrup... ....197/193 X 3,086,635 4/1963 Palmer ..197/l6 3,191,740 6/1965 Smusz et al ..l97/16 3,195,707 7/1965 Reynard ..197/16 3,311,211 3/1967 Schaefer ..l97/l6X 3,340,987 9/1967 Bastian ..l97/20 3,353,646 11/1967 Young ..197/l6 3,373,858 3/1968 Stahl et al ..l97/l7 3,664,478 5/ 1972 Menicanti et al ..197/ l 7 OTHER PUBLICATIONS IBM Technical Disclosure Bulletin; Article by S.A. Okcuglu entitled Single Character Storage, vol. 13 No. 11, April 1971 pp 3500.

Primary Examiner-Edgar S. Burr Attorney-Michael S. Striker [5 7] ABSTRACT Code bars having first and second opposite edges with coded projections, are located between spring-biassed interposers and storing slides. When a key releases a selected first interposer, it engages corresponding first code projections of corresponding code bars and displaces the same so that storing members are displaced in accordance with the second coded projections. A typing operation is carried out under the control of the storing members, while the first selected interposer is driven back to its position of rest, and out of the locking means, so that a second selected interposer, whose key was operated during the printing operation, and which was blocked in a waiting position by the locking means, can enter the locking means and cause another printing operation.

17 Claims, 4 Drawing Figures PATENTEU Z 3,718,243

sum 1 or a m Av S umwm Sam m mm mm omm PATENTEB FEBZ 7 i973 SHEET 2 OF 3 APPARATUS FOR STORING TYPING COMMANDS GIVEN IN TOO RAPID SUCCESSION BY KEYS BACKGROUND OF THE INVENTION The present invention is concerned with an input apparatus for typewriters, and like office machines, in which upon operation of keys, interposers are released for controlling functions of the typewriter, and provided with locking means permitting only one interposer to move to an operative position while every following selected interposer is held by the locking means in a waiting position, until the printing operation, started by the first interposer, is completed and the first interposer clears the locking means.

For obtaining a high average typing speed, it is necessary to mechanically store irregular sequences of key actuations which occur in too rapid succession.

The U. S. Pat. No. 3,086,635 discloses apparatus of this type in which interposers of a power operated typewriter with type bars, cooperate with a ball locking device, and can be arrested in working positions while still engaging the ball locking device, which is released only after the start of longitudinal movement of the interposer, so that a second key actuation can only be carried out a substantial interval. If the second key actuation is too early, the interposer cannot engage the ball locking device, and the rhythmical typing operation is disturbed by the unexpected resistance. Only when the locking device is again free, the interposer can engage, and the arresting spring becomes effective. The interposer is locked for the entire remaining time required for a printing operation. The storing is effected only for a short time, after the locking device is already cleared.

The German patent application P 19 27 963.1 discloses an interposer of the type lever drive, which is subjected to a force and can be released by the movement of an associated type lever, whereupon the interposer automatically falls into the locking device and effects sequential operations, whereupon it is returned by return drive means to a position of rest.

In this arrangement, coding bars are not engaged by interposers, but only placed in the region of a power drive. This results in a substantial delay, and the coding bars are not arrested in the set position, so that erroneous coding cannot be avoided.

The German 08 1,512,117 discloses an apparatus in which resiliently arrested coding bars are released upon operation of the key levers. In order to avoid the simultaneous actuation of two key levers, the same cooperates with a locking device. Upon actuation of a coding bar, the respective associated key lever is held in depressed position in the locking device. Only when the coding bar has returned to its arrested initial position, and the locking device has been released by the key lever, the next key lever can be operated. This arrangement is not suitable for operations in which the key levers are operated in very rapid succession.

SUMMARY OF THE INVENTION It is one object of the invention to provide an apparatus for storing typing commands given by keys of a typewriter, which is free of the disadvantages of the prior art, and permits printing operations in a correct sequence, even if the keys of the typewriter are operated in very rapid succession.

Another object of the invention is to obtain a mechanical storing of two successive mechanical command signals produced by key actuations.

With these objects in view, the present invention pro- 5 vides coding bars which have first coded projections and recesses cooperating with interposers, and second coded cutouts and projections cooperating with storing members. Storing members selected in this manner, are automatically arrested in a storing position and effect a printing operation while the interposer is returned to its initial position of rest. Since the storing members are arrested in the storing position, the respective function is stored until finished. For example, the set position of the type head is maintained until printing of a character has been completed.

If two keys are simultaneously actuated in the apparatus of the invention, no storing member is actuated, and no printing operation takes place. In order to return the respective interposers to the position of rest, a clearing bar is used which can be operated by special manually operated member. In accordance with the further development of the invention, a separate clearing bar is omitted, and the springs acting on the interposers are mounted on a spring support bar which in the region of the attaching points of the springs to the interposers, are mounted for turning movement about an axis so that the interposers are returned to the initial positions by the springs which normally urge the interposers to an operative position. When the manually operated member opens the main switch of the typewriter, the spring support bar engages the key levers for locking the same in the normal inoperative position.

An embodiment of the invention comprises a set of interposers operated by key means, respectively, and having a position of rest and an operative position; first spring means biasing the interposers toward the operative position; first arresting means for arresting the interposers in the position of rest, and releasing any selected interposer displaced by operation of the respective selected key means; locking means for blocking movement of the interposers, except one, toward the operative position; a set or storing members or slides having a normal position and a storing position; second spring means biasing the storing means to the normal position; a series of code bars having first and second sets of coded cutouts and projections cooperating with the set of interposers and the set of storing members, respectively, so that a first selected interposer moving to the operative position, displaces selected code bars which move selected storing members to the storing position; second arresting means for arresting storing members in the storing position; return drive means for returning the first selected interposer from the operative position to the position of rest so that the locking means is cleared and the respective interposer is arrested; first actuating means operated by any one of the storing members in the storing position to actuate the return drive means; typing means including a movable member; second actuating means operated by any one of the storing members in the storing position, and controlling the typing means to perform a typing operation while the movable member is displaced; and releasing means actuated by the movable member to release the arrested storing members for movement to the normal position.

Upon return of the first selected interposer to the position of rest, the locking means permits a second selected, displaced, and released interposer, which was blocked by the locking means, to move toward the operative position while the printing operation started by the first selected key means and interposer, is carried out.

The novel features which are considered as characteristic for the invention are set forth in particular in the appended claims. The invention itself, however, both as to its construction and its method of operation, together with additional objects and advantages thereof, will be best understood from the following description of specific embodiments when read in connection with the accompanying drawing.

BRIEF DESCRIPTION OF THE DRAWING FIG. 1 is partly a fragmentary side elevation, partially in section, illustrating an embodiment of the invention, and partly a diagrammatic and perspective view;

FIG. 2 is a fragmentary side elevation, partially in section, corresponding to FIG. 1, but illustrating the apparatus during return of an interposer to its position of rest;

FIG. 3 is a fragmentary perspective view illustrating a detail of FIG. 1; and

FIG. 4 is a fragmentary side elevation, partially in section, illustrating a special feature of the apparatus by which interposers are returned to the position of rest by a manual operation, while the key levers are locked.

DESCRIPTION OF THE PREFERRED EMBODIMENT Key levers 3 having keys 5 are mounted for angular movement in cutouts of the wall la of a frame 1, and are guided by a comb-shaped wall lb. Leaf springs 7 urge key levers 3 to a normal position in which the upper edge of an end portion 1 l engages an abutment 9 formed by wall lb. Portions 11 respectively cooperate with end portions 12 of interposers 13, each of which has a locking portion 15 cooperating with a conventional ball locking means 17, which permits only one interposer to move out of its position of rest shown in solid lines in FIG. 1 toward the operative position 13b shown in dash and dot lines in FIG. 1. Interposers 13 are guided for longitudinal movement in walls In and lb, and in the intermediate wall 19. A spring 21 is attached to a hook-shaped attaching portion 89 of each interposer 13 so that the respective arresting portion 23 of an interposer 13 is arrested by an edge portion 25 of wall 19 while interposer 13 is in the position of rest. When a key means 5, 3 is depressed, the respective interposer 13 is displaced and portion 23 releases arresting edge 25, so that the respective spring 21 becomes operative to move the released interposer toward an operative position 13b. The first released interposer can move into the locking means 17 to assume the operative position 13b, but if a second interposer 13 is released by the respective key means 5, 3 while the first selected interposer 13 is still in the locking means, the locking means 17 blocks the second selected interposer 13 in the position 13a shown in chain lines.

When an interposer moves to the operative position 13b, its portion 26, which extends across a series of code bars 29, displaces selected code bars, which cooperate with portions 38 of storing members 43.

Each code bar 29 is supported at the lower end or arm means 32 which are pivotally mounted on stationary pivot means 31, so that each code bar can be displaced by an interposer portion 26 toward the end portions 38 of the storing members 43.

The edges of coding bars 29 which confront the interposers 13, are formed with coded projections and cutouts so that portion 26 can enter cutouts of some coding bars, but engages projections of other coding bars 29 for displacing the same. The other edges of the coding bars 29 are formed with coded projections and cutouts, so that coding bars 29, displaced by the interposer in accordance with the cutouts and projections 27, engage with coded projections end portions 38 of certain selected storing members 43, while the remaining storing members 43 can enter the respective cutouts. In this manner, storing members 43 are selected and displaced from a normal position to a storing position in which a shoulder 47 is arrested by an arresting portion 51 of frame 1, while the respective storing members 43 are turned in counterclockwise direction by individual springs 45. Consequently, a number of storing members representing the character of the selected keys 5, are arrested in a displaced storing position in which the projecting shoulder portion 47 is located behind the respective arresting portions 51. All arm means 32 of the code bars 29 are urged by springs 33 to a normal position abutting a stationary stop 35 which is schematically illustrated. Consequently, displaced code bars 29 will return to the normal position due to the action of springs 33 when released by portion 26 of the respective interposer 13 returning to its position of rest.

When selected storing members 43 move to the arrested storing position 43a, they engage an actuating bar 53 which extends across storing members 43. As schematically shown in FIG. 1 by a line 53a, displacement of the actuating bar 53 causes a revolution of a rotary drive member 55a, for example by closing of a switch controlling a motor, so that a return bar 58 which extends across engaging portions 63 of all interposers 13 turns with legs 59 about a shaft 59a so that its edge 61 engages the engaging portion 63 of an interposer 13 in the operative position 13b, and shifts the same to its position of rest in which interposer 13 is immediately arrested by the arresting wall portion 25, while its locking portion 15 moves out of the locking means 17 and clears the same.

Due to the actuation of the drive means 55 which include means 55a, 57, 61, 59, the selected interposer is immediately returned after the corresponding storing members or storing member 43 has been arrested in the storing position.

Storing members 43 moving to the arrested storing position 43a, also operate associated switches 67, 69 which are connected to electric control devices 72 on a movable carriage 85 which supports on a slide 75 a type head 71 cooperating with a platen 73. When switches 67, 69 are closed in accordance with the code, the type head 71 is turned and axially displaced to position the respective character type opposite platen 73, and thereupon slide 75 is moved toward the platen to effect an imprint, in a manner well known to those skilled in the art. At the end of the printing operation, the movable slide or member 75 closes switch means 77,79 which are operatively connected with a releasing member 81, see also FIG. 3, which has elastic prongs 83 cooperating with the end portions 65 of the storing members 43. The line 78 schematically illustrates electromagnetic means or other drive means actuated by the closed switch 77, 79 to raise the releasing member 81 to a position returning all displaced and arrested storing members 43 to the normal position in which they are pulled toward the right as viewed in the drawing to the normal position by the action of springs 45. By this time, drive means 55 have already returned the respective interposer 13 to its position of rest, and springs 33 have returned displaced code bars 29 to a normal position so that the respective storing members 43 can move to the normal position without engaging the coded cutouts and projections 37.

A spring support bar 87 has legs 88 mounted for angular movement on a shaft 91 between the position shown in solid lines, and the position shown in broken lines in FIG. 4. Attaching portions 89 of interposers 13 are located substantially in the axis of shaft or pivots 91, and have the ends of springs 21 attached thereto. The other ends of springs 21 are secured to the spring support bar 87, and as is apparent from FIG. 1, the springs 21 are normally positioned to pull interposers 13 toward the operative position 13b.

Spring support bar 87 carries a pin 93, see FIG. 3, located in a recess 95 of a lever 99 which is connected by a hole 98 with one end of a link 101 whose other end is located in a hole of a projection 111 of a manually operated member 103.

Manually operated member 103 is provided in the region of the keys 5, turnable about a shaft 102 between the first position abutting a stop 107 and a second position abutting a stop 109, and is held in either position by a dead center spring 105 passing through the axis of shaft 102 when member 103 is manually shifted. Portion 1 11 cooperates with the main switch 112 by which the motor 113 of the typewriter is started, motor 113 serving, for example, to rotate the power roll of typewriter, not shown, and to move carriage 85 and slide 75.

In the position illustrated in solid lines in FIG. 4, manually operated member 103 have opened switch 112 so that motor 113 does not operate. The spring support bar 87 has been turned from the position shown in solid lines to the position 87a shown in chain lines, turning springs 21 from a position pulling the interposers 13 to the operative position 13b to the broken line position pulling the interposers 13 towards the position of rest. At the same time, the edge 117 of the spring support bar 87 in the position 87a abuts the lower edge of key levers 3, locking all key levers 3 in the normal position of rest in which they are held by leaf springs 7. Consequently, it is not possible to operate keys 5 when manually operated member 103 switches off motor 113.

p The apparatus operates as follows. At the beginning of an operation, manually operated member 103 is turned in clockwise direction, as viewed in FIG. 4 to the position abutting stop 109, so that projection 111 closes main switch 112 and starts motor 113. When a key 5 is operated and the respective key lever 3 displaced, the key lever portion 11 presses the portion 12 of the respective interposer l3 downward so that the arresting portion 23 is moved away from the arresting portion 25 of wall 19. When the interposer 13 is released by arresting portion 25, the respective spring 21 pulls interposer 13 to a position in which the locking portion 13 of interposer 13 enters between two balls of ball locking means 17, and assumes the operative position 13b, shown in chain lines in FIG. 1. The arm 26 cooperates with the coded projections and recesses 27 of the code bars 29, and causes turning of selected code bars 29 about pivot 31 to a position displacing certain storing members 43 which represent the same character as the displaced key means 5. The displaced storing members in the storing position are arrested by arresting wall portion 51.

Any storing member 43 in the arrested storing position has operated actuating bar 53 so that drive means 55 are started, and effect turning of the edge 61 of bar 58 about shaft 49a until edge 61 engages the engaging portion 63 of an interposer in the operative position 13b, and moves the interposer 13 back to the position of rest in which the respective spring 21 causes arresting of portion 23 of interposer 13 by the arresting wall portion 25, while the respective key means 3, 5 is returnedto the position of rest by leaf spring 7 independently of the interposer 13 as soon as released by the finger of the operator. The return of the interposer 13 by drive means 55, is best seen in FIG. 2 from which it is apparent that the locking portion 15 of the first selected and returned interposer 13, is released by locking means 17 in the position of rest of interposer 13.

If a second key 5 was operated, and a second interposer 13 was released by arresting means 25, 23, movement of the second selected interposer 13 due to the action of its spring 21 to the operative position was prevented by the locking means 17,and the locking portion 15 of the second selected interposer was blocked by the locking means 17. However, as soon as locking means 17 is released by locking portion 15 of the first selected and returned interposer 13, spring 21 of the second selected interposer 13 pulls the same into the locking means 17 so that a second selected interposer 13 performs the function described above for the first selected interposer 13, but, of course, effecting a different selection of storing members 43 for printing a different character.

The return of the first selected interposer to the position of rest can be carried out while the printing means 71, still perform the printing operation started by the closing of switches 67, 69 by storing members 43 moving to the storing position arrested by arresting portion 51. At the end of the printing operation, the movable slide 75 operates switch 77, 79 so that releasing member 81 returns all storing members 43 from the arrested storing position to a released position in which the respective springs 45 pull the displaced storing members 43 to the normal position.

Due to the fact that the engaging portions 63 of the interposers 13 move along a first path to the operative position due to the action of springs 21, and move along a second different path when returned by the drive means 55 to the position of rest, it is possible that during return of the first selected interposer 13, a second selected and released interposer 13 can become effective upon release of the ball locking means 17 by the first selected interposer, as best seen in FIG. 2. The second selected interposer 13 can jump to the position 130 shown in broken lines, and a third selected interposer 13 can be released by operation of the respective key until blocked by locking means 17 The return drive means 55 has the effect that the storing members 43 selected by operation of the selected interposer 13, can be pulled by springs 45 to the arrested storing position only when the printing function associated with the first selected interposer 13 and the respective storing members 43 has been completed.

Due to the comb-shape of the releasing means 81, 83, see particularly FIG. 3, it is possible to move the second selected storing member 43 toward the storing position while the movement of the first selected storing members 43 to the respective positions of rest is being carried out. This is due to the fact that the prongs of the comb-shaped releasing member 81 are resilient. Furthermore, during the angular movement of storing members 43 to the arrested storing position, the switch means 67, 69 is closed which effect a setting of the type head 71 to the respective character, and a movement of slide 75 to obtain an imprint.

In order to avoid a wrong coding, storing members 43 are held in the arrested storing position until printing has been completed. During the movement of slide 75 with type head 71 to the printing position engaging platen 73, switch 77, 79 is closed which causes a cyclical movement of the releasing member 81 by which the storing members 43 are released from the arresting portion 51 so that springs 45 pull the storing members 43 to the normal position of rest.

In the preferred embodiment of the invention, springs 7 are provided for key means 5, 3, springs 21 are provided for the interposers 13, springs 33 are provided for the coding bars 29, and springs 45 are provided for the storing members 43 so that each of these members can be returned to the position of rest independently of the other members, as soon as it is possible.

If directly after depression of a key 5, a second key 5 is actuated, a second interposer 13 is released by the arresting portion 25, and engages with its locking portion the ball locking means 17. Only after ball locking means 17 has been released by the first inserted locking portion 15 of the first selected interposer 13, the stored second interposer 13 automatically falls into the locking means clue to the action of the respective spring 21.

Since storing members 43, after a predetermined movement of the respective selected interposer l3, and of the respective coding bars 29, are arrested for storing the respected selected printing function, no wrong coding is possible, and on the other hand, interposer 13 can be returned to its position of rest while the printing operation takes place, while an already released second selected interposer can start its operation. Only when the printing operation has been completed, storing members 43 are released and returned to the normal position.

If two interposers 13 are absolutely simultaneously released from the arresting portion 25 by operation of the respective keys, the locking means 17 prevents any printing operation. In order to return the released interposers 13 to the arrested position of rest, manually operated member 103 is turned to the position abutting stop 107, opening main switch 12 of motor 113, while the linkage 101 turns spring support bar 87 to the broken line position 87a shown in FIG. 3 so that springs 21 in the broken line position urge the respective interposer 13 to the position of rest, arrested by arresting portion 25, instead of to the operative position. Consequently, the released interposers 13 are returned to the position of rest and arrested. Springs 21 in the broken line piston shown in FIG. 3, displace the respective interposers toward the position of rest until respective attaching portions 89 abut an edge 90 of the frame.

Since the edge 117 of the spring support 87 in the broken line position 87a abuts the lower edges of all key levers 3, none of keys 5 can be operated when the manually operated member 103 disconnects the motor 113.

It will be understood that each of the elements described above, or two or more together, may also find a useful application in other types of apparatus for storing typing commands given in too rapid succession by keys.

While the invention has been illustrated and described as embodied in an apparatus for storing typing commands including code bars having first coded means cooperating with interposers, and second coded means cooperating with storing members, it is not intended to be limited to the details shown, since various modifications and structural changes may be made without departing in any way from the spirit of the present invention.

Without further analysis, the foregoing will so fully reveal the gist of the present invention that others can by applying current knowledge readily adapt it for various applications without omitting features that, from the standpoint of prior art, fairly constitute essential characteristics of the generic or specific aspects of this invention and, therefore, such adaptations should and are intended to be comprehended within the meaning and range of equivalence of the following claims.

What is claimed as new and desired to be protected by Letters Patent is set forth in the appended claims.

I claim:

1. Apparatus for storing typing commands given in too rapid succession by keys, comprising a set of key means; a set of interposers operated by said key means, respectively, and having a position of rest and an operative position; first spring means biasing the interposers toward said operative position; first arresting means for arresting said interposers in said, position of rest, and releasing any selected interposer displaced by operation of the respective selected key means; locking means for blocking movement of said interposers, except one, toward said operative position; a set of storing members having a normal position and a storing position; second spring means biasing said storing means to said normal position; a series of code bars, having first and second sets of coded cutouts and projections cooperating with said set of interposers and said set of storing members, respectively, so that a first selected interposer, moved by said first spring means to said operative position, displaces selected code bars which move selected storing members to said storing position; second arresting means for arresting storing members in said storing position; return drive means for returning said first selected interposer from said operative position to said position of rest so that said locking means is cleared and the respective interposer is arrested; first actuating means operated by any one of said storing members in said storing position to actuate said return drive means; typing means including a movable member; second actuating means operated by any one of said storing members in said storing position, and controlling said typing means to perform a typing operation, said movable member being displaced by said typing operation; releasing means actuated by said movable member to release said arrested storing members for movement by said second springs to said normal position so that upon return of said first selected interposer to said position of rest, said locking means permits a second selected, displaced, and released interposer, which was blocked by said locking means, to move towards said operative position while said printing operation is carried out.

2. Apparatus as claimed in claim 1 comprising a frame; wherein said storing members are storing slides mounted on said frame for longitudinal movement by said code bars, and for angular movement to said storing position; wherein said second arresting means include a frame portion engaging a portion of a storing slide in said storing position; and wherein said second spring means bias said storing slides to move longitudinally to said normal position and angularly to said storing position.

3. Apparatus as claimed in claim 1 wherein said storing members are arranged in a row; and wherein said first actuating means include an actuating bar crossing said storing members and being displaced by storing members in said storing position; and wherein said return drive means are operatively connected with said actuating bar for engaging and returning said first selected interposer to said position of rest when said actuating bar is displaced.

4. Apparatus as claimed in claim 3 wherein said return drive means include a driven rotary member, a return bar crossing said interposers, and link means connecting said rotary member with said return bar so that said return bar engages any first selected interposer in said operative position and returns the same to said position of rest.

5. Apparatus as claimed in claim 4 wherein said interposers have engaging portions cooperating with an edge of said return bar; and wherein said return drive means include means mounting said return bar for movement with the engaged engaging portion of the selected first interposer along a circular path spaced from the path of movement of the engaging portion of the second selected interposer to said operative position under the action of said first spring means.

6. Apparatus as claimed in claim 1 wherein said second actuating means include a set of switch means actuated by said storing members, respectively, in said storing position; and wherein said typing means are controlled by said switch means to effect a movement of said movable member for actuating said releasing means to release storing members arrested in said storing position.

7. Apparatus as claimed in claim 1 including third spring means for returning said code bars to a position of rest; and fourth spring means for returning said key means to a position of rest so that said key means, interposers, code bars, and storing members are independently returned to a position of rest, when released.

8. Apparatus as claimed in claim 1 wherein said releasing means include a releasing member crossing said storing members, and electric means including switch means controlling said releasing member to move from a position of rest to a releasing position releasing arrested storing members for movement to said normal position, said switch means being actuated by said movable member of said typing means so that each storing member returns to said normal position after a typing operation has been carried out.

9. Apparatus as claimed in claim 1 wherein said interposers have attaching portions aligned along an axis when said interposers are in said position of rest; wherein said first spring means include a set of springs having first ends respectively attached to said attaching portions, and a spring support bar to which the second ends of said springs are attached; means mounting said spring support bar for turning movement about said axis between a working position in which said springs urge said interposers to said operative position, and a resetting position in which said springs urge displaced interposers to said position of rest; and manually operated means connected with said spring support bar for shifting the same between said working and resetting positions.

10. Apparatus as claimed in claim 9 comprising a main switch; and wherein said manually operated means are also connected with said main switch, and include a manually operated member having a first position for placing said spring support bar in said working position and for closing said main switch, and a second position for placing said spring support bar in said resetting position and for opening said switch so that the apparatus is deenergized when said spring support bar resets displaced interposers.

11. Apparatus as claimed in claim 10 wherein said key means include key levers, and springs urging "said key levers to a position of rest; and wherein said spring support bar in said resetting position engages said key levers for locking the same in said position of rest.

12. Apparatus as claimed in claim 1 wherein said interposers and said storing members are located on opposite sides of said series of code bars and have portions extending across said series of code bars; and wherein said code bars have opposite first and second edges respectively confronting end portions of said interposers and storing members, said first and second edges having said first and second coded cutouts and projections, respectively.

13. Apparatus as claimed in claim 12 comprising carrier means supporting said series of code bars for angular movement with said interposers toward said storing members; and spring means for returning said code bars to a position of rest when said interposers return to said position of rest thereof.

14. Apparatus as claimed in claim 13 wherein said carrier means include a stationary pivot, and a series of arm means supporting said code bars, respectively, for angular movement about said pivot means.

15. An apparatus comprising a set of key means; a set of interposers having a position of rest and an operative position, and being actuated by said key means, respectively, said interposers having attaching portions aligned along an axis when said interposers are in said p'osition of rest; a set of springs having first ends respectively attached to said attaching portions, and a spring support bar to which the second ends of said springs are attached; means mounting said spring support bar for turning movement about said axis between a working position in which said springs urge said interposers to said operative position, and a resetting position in which said springs urgedisplaced interposers to said position of rest; and manually operated means connected' with said spring support bar for shifting the same between said working and resetting positions so that interposers held by said springs in said operative position are returned to said position of rest.

16. Apparatus as claimed in claim 15 comprising a main switch; and wherein said manually operated means are also connected with said main switch, and include a manually operated member having a first position for placing said spring support bar in said working position and for closing said main switch, and a second position for placing said spring support bar in said resetting position and for opening said switch so that the apparatus is deenergized when said spring support bar resets displaced interposers.

17. Apparatus as claimed in claim 16 wherein said key means include key levers, and springs urging said key levers to a position of rest; and wherein said spring support bar in said resetting position engages said key levers for locking the same in said position of rest.

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Non-Patent Citations
Reference
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Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4003459 *Nov 26, 1974Jan 18, 1977Robert Adolphus Guy MoffattWriting machines
US4027763 *Aug 2, 1976Jun 7, 1977Ing. C. Olivetti & C., S.P.A.Keyboard for office machines
US4128382 *Sep 19, 1977Dec 5, 1978Ing. C. Olivetti & C., S.P.A.Keyboard recocking mechanism
US4235554 *Nov 16, 1978Nov 25, 1980Silver Seiko LimitedKeyboard signal storage mechanism
US4283150 *May 14, 1979Aug 11, 1981Brother Kogyo KaishaTypewriter
US4412755 *Dec 21, 1981Nov 1, 1983Brother Kogyo Kabushiki KaishaTypewriter with an erasing apparatus
US4600319 *Jun 6, 1985Jul 15, 1986The United States Of America As Represented By The Secretary Of The ArmyControl for dot matrix printers operating in harsh environments
US5505337 *Oct 12, 1994Apr 9, 1996Littman; Carrie W.Hygienic toothpaste dispenser and stand
Classifications
U.S. Classification400/52, 400/366, 400/425, 400/161.1, 400/440.2, 400/478, 400/54, 400/666, 400/367
International ClassificationB41J7/44, B41J7/00
Cooperative ClassificationB41J7/44, B41J5/08
European ClassificationB41J5/08, B41J7/44