Patent EA-000311-B1 (EA)
Title: Typewriter
IPC: B41J5/02
Filed: 1996-08-28
Abstract: 1. A typewriter, comprising a character block (1), a block (2) of the register selection, comprising elements of setting the basic lower and upper registers; a typing block (3), comprising main letters of the basic symbols of a standard character block of one language, for example, Russian;  the character block (1) is connected via the register selection block (2) with the typing block (3), characterized in that comprises an alphabet switch (4), having n positions for choosing a working alphabet of typing symbols, n = 1...N, where N is a natural number;  the elements of setting additional lower and upper registers are introduced in the register selection block (2);  additional letters of specific symbols are introduced in the typing block;  letters of other languages and other symbols, differed from the main symbols;  a number of additional letters is equal to a number of different from each other specific symbols;  a unit (5) for automatic return to the basic registers is also introduced;  the alphabet switch (4) is connected via the register selection block (2) with the typing block (3);  the typing block (3) is connected via the unit (5) for automatic return to the basic registers with the register selection block (2). 2. Device according to Claim 1, characterized in that the alphabet switch (4) has two positions for choosing a working alphabet of the typing symbols and made as a piston rod (6) with rigidly secured first protrusions (7) of a handle (8), guide cylinder (9) with primary (57) and secondary (58) longitudinal slots in the rear end, the first spring (10), while the piston rod is mounted enabling to rotate and longitudinal displacement coaxially inside the guide cylinder (9), the handle (8) is rigidly connected to the piston rod (6), the first protrusions (7) are associated with primary (57) and secondary (58) longitudinal slots of the guide cylinder (9), the front end of the guide cylinder (9) is rigidly connected to the typewriter frame (11), the front end of the first spring (10) is connected with the rear end of the piston rod (6); elements of setting of additional lower and upper registers of the block register selection (2) are made as third longitudinal slots (59) in the front hollow end and the first through slot (65) rigidly connected with the first pin (66) in the rear end, the first bearing (13), the left outer shaft (14) with the first(67) and the second (68)locking slots in the rear end, the second (15) and third (16) bearings, the first spiral spring (17), made as a loop the first (18), the second (19), the third (20) and the forth (21) strips with slots in the bottom portion and with slots and with rigidly connected guide bushings (22) in the upper portion, the right inner shaft (23) with the second through slot (69) and rigidly fixed the second pin (70) in the rear end, the forth (24) and the fifth (25) bearings, the right outer shaft (26) with the third locking slot (71) in the rear end, the second spiral spring (27), the sixth (28), the seventh (28), the eighth (30) and the ninth (31) bearings, the first (32), the second (33), the third (34 and the fourth (35) screws, the left (36) and the right (37) function keys of the additional registers, the first lever of the additional registers (38), rigidly connected with a second protrusion (39) and with guides, rigidly connected to the typewriter frame (11), support base (40), rigidly connected with the typewriter frame (11), the first toothed shaft, rigidly fit coaxially on the inner shaft (12) of the first (60), the second (61) and the third (62) gears, the axes of which are associated with the typewriter frame (11) enabling to rotate freely, the second toothed shaft (42), rigidly fit coaxially on the first lever (38) of the additional registers, the second lever (43) of the additional registers with the guides, rigidly connected with the typewriter frame (11), the first (44), the second (45) and the third (46) platforms, figured platform (47),, movable levers (48) with a second spring (63) and two balls (64), set inside the upper horizontal hollow portion of each the lever, said balls are connected with both ends of the second spring (63), the fourth (49) and the fifth (50) platform, the third springs (51), pressure levers (52) with the guides, rigidly connected with the typewriter frame (11), the left locking lever (72), arranged in the first through slot (65) on the first pin (66) enabling to rotate freely, the right locking lever (73), fit in the second through slot (69) on the second pin (70 enabling to rotate freely, the fourth spring (74), one end of which is rigidly connected to the lower end of the left locking lever (72), and the other end is rigidly connected with the left inner shaft (12), the fifth spring (75), one end of which is rigidly connected to the lower end of the right locking lever (73) and the other end is rigidly connected with the inner right shaft (23), wherein the rear end of the left inner shaft (12) is associated via the right bearing (13) with the type writer frame (11), the front hollow end of the left inner shaft (12) is associated with the typewriter frame(11) via the alphabet switch (4), the left outer shaft (14) is fit coaxially on the left inner shaft (12) through the second (15) and the third (16) bearings, the first spiral spring (17) by one end is rigidly associated with the left inner shaft (12), and the other end is rigidly connected to the left outer shaft (14), the right inner shaft (23) is rigidly connected from both ends to the typewriter frame (11), the right outer shaft (26) is fit coaxially on the right inner shaft (23) via the fourth (24) and fifth (25) bearings, the second spiral spring (27) is rigidly connected by one end to the right inner shaft (23), and the other end is rigidly connected to the right outer shaft (26), the left side of each of the first (18), the second (19) and the third (20) strips is arranged on the left outer shaft (14) and rigidly tightened to it in one point by correspondingly the first (32), the second (33) and the third (34) screws, and the right side of said strips is arranged accordingly on the sixth (28), the seventh (29) and the eighth (30) bearings, fit on the right outer shaft (26), the right side of the fourth strip (21) is arranged on the right outer shaft (26)and rigidly tightened with it in one point by the fourth screw (35), and the left side of the fourth strip (21) is arranged on the ninth bearing (31), fit on the left outer shaft (14), the left function key (36) of the additional register is rigidly associated with the upper end of the first lever (38) of the additional register, the second protrusion (39) of the first lever (38) of the additional registers is associated with the base platform (40), the teeth of the first gear (60) mesh the teeth the teeth of the toothed shaft (41) and the teeth of the second gear (61), the teeth of the third gear (62) mesh the teeth of the second gear (61) and the teeth of the second toothed shaft (42), the lower end of the first lever (38) of the additional registers is associated with first (44) and the second (45) platforms, which are further rigidly connected to the front face of the left outer shaft (14), the right function key (37( of the additional registers is rigidly connected to the upper end of the second lever (43) of the additional registers, the lower end of which is associated with the third platform (46), is rigidly connected to the face of the right outer shaft (26), movable levers (48) are associated with the guide bushes (22) of the first (18), the second (19), the third (20) and the fourth (21) strips, the lower ends of the movable levers (48) are associated with the fourth (49) and the fifth (50) platforms accordingly, the upper horizontal hollow portion of each of the movable levers (48) is inserted into the slot of the corresponding figured platform (47) and associated with the front and the rear inner faces of the figured platform (47) via the second spring (63) and balls (64), each figured platform (47)is rigidly associated with the lower end of the corresponding pressure lever (52), fourth (49) and the fifth (50) platforms are rigidly associated with corresponding first key levers (53), the third springs (51) are set freely above the guide pressure levers (52) accordingly and rigidly associated by one end with the corresponding figured platform (47), and by the other end are rigidly connected to the typewriter frame (11), the left locking lever (72)is associated with the first (67) and the second (68) locking slots, the right locking lever (73) is connected with the third locking slot (71); additional letters of specific symbols are printed on the alphabet keys of additional letter levers, which are arranged in the letter basket of the typing block (3), wherein additional letter levers and a part of the main letter levers are associated accordingly with the first key levers (53) via elements of the typewriter and another part of the main letter levers is associated correspondingly via elements of the typewriter with the second key levers (54);  the unit (5) for automatic return to the basic registers is made in the form of a return bridge (76), arranged in the segment of the typewriter, the first return valve (77), enabling to rotate freely around the axis, associated with the typewriter frame (11), the second return valve (78) with the guides, rigidly connected to the typing writer frame (11), the left (79)and the right (80) return platforms, the third return lever (81) with rigidly associated the third protrusion (82) in the rear end and the teeth in the front end and the guides, rigidly connected to the typewriter frame (11), the third toothed shaft (83), enabling to rotate freely around the axis, associated with the typewriter frame (11), the third key lever (84) with teeth in the lower portion, the sixth spring (85), wherein the return bridge (76) is rigidly associated with th