US3160257A

US3160257A - Electric typewriter

Info

Publication number: US3160257A
Application number: US189220A
Authority: US
Inventors: D Evelynes Claude
Original assignee: Individual
Current assignee: Individual
Priority date: 1962-03-27
Filing date: 1962-03-27
Publication date: 1964-12-08
Anticipated expiration: 1981-12-08

Description

Dec. 8, 1964 c. DEVELYNES ELECTRIC TYPEWRITER Filed March 27 1962 3 Sheets-Sheet 1 88 94- 93 INVENTOR 3/ C/auoe D'fve/ynes wag-J ATTORNEU Dec. 8, 19 c. DEVELYNES 3,160,257

ELECTRIC TYPEWRITER Filed March 27, 1962 3 SheetsSheet 2 l INVENTOR C/aude DEve/ynes l 4/ ywaa jr g ATTORNEY) United States Patent 3,160,25 ELECTRIC TYPEWRITER Claude DEvelynes, 26 Stanley Sh, Chatswood,

New South Wales, Australia Filed h lar. 27, I962, Ser. No. 189,220 14 Claims. (Cl. 197-44) This invention relates to typewriters and more particularly to electronic typewriters.

An important object of the invention is to combine the facilities of a teleprinter and an electric typewriter. Another important object is to provide an electro-magnetically operated typewriter adapted to employ the electronic equipment illustrated and described in my co-pending patent application Serial No. 55,943, filed Sept. 14, 1960, for Electronic Systems, now Patent No. 3,032,607, whereby a plurality of like typewriters may time-share the same electric circuit and facilitate the passage of, for example, tens of thousands of words per minute over the one channel.

Another important object is to provide an electric typewriter which is constructed and arranged for processing of material for, and the reproduction of material from, a magnetic store. For example, a plurality of the machines, as a hundred or even more, may be fed into the one recording tape at the same time and, on playing back, the material supplied by any one of the machines can be selected, or all or a group of the machines can be operated together.

Still another important object is to provide function bars or other actuating means, arranged in a plane adjacent to the typing mechanism, which will permit the type levers to be operatively connected to the function bars by means of a direct link such as a straight Wire or bar (as in the case of a conventional manually-operated typewriter), thus eliminating encased cables.

Another important object is to provide a typewriter which is operated by electr c-magnetic selecting and selecting-operating devices. There is a plurality of electromagnet selecting devices and these form a first group. There is a plurality of electromagnet selecting-operating devices and these form a second group. Each select ngoperating device is associated with a group of function bars including a plurality of function bars. The first and second groups of electromagnetic devices are connected to a local electric power supply by means of key switches operated by the keyboard of the typewriter. These are so arranged that, upon depressing a key, the selected device of the first group advances a function bar or other actuating means in each of a number of groups of function bars or other actuating means arranged in a plane adjacent the typing mechanism of the typewriter and connected to the type levers by direct links. This advancement brings the ends of the function bars or other actuating means in such relationship with an operating member, connected to each of the magnetic devices of the second group of electromagnetic devices, that, upon operation of the selected device of the second group, a function bar or other actuating means is engaged and a type lever, corresponding to the key depressed on the keyboard, is actuated; which operation results in the selection of one of a number of selected operations which number is equal to the number of magnetic devices in the first group of electromagnetic devices multiplied by the number of electromagnetic devices in the second group of electromagnetic devices.

Additionally, an important object is to provide dualfunction devices, in that the second selecting device is also the operating device, and is not dependent for its functioning upon the closing of an electrical contact relay operated by the actuation of the first selecting device, the necessary delay between the two operations being elfected 3,l,25 Patented Dec. 8, 1964 by adding inertia to the electro-magnetic selecting-operating device.

A further important object is to provide an electric typewriter or teleprinter which can be operated at high typing speeds without the possibility of jamming the type levers.

A further object of the invention is to provide a receiving teleprinter in which the machine functions independently of any relays or mechanical switching devices.

Other objects and advantages of the invention will be apparent during the course of the following detailed description of the invention, taken in connection with the accompanying'drawings, forming portions of this disclosure and in which drawings:

FIGURE 1 is a fragmentary top plan view of portions of the operating means of the electric typewriter;

FIGURE 2- is a vertical sectional view, substantially on the line 22 of FIGURE 1;

. FIGURE 3 is a schematic view combining some of the operating means of FIGURES 1 and 2 in order to illustrate the operative association. of certain shafts with triggers carried thereby and association of the triggers with abutments carried by function bars of the typewriter;

FIGURE" 4 is a view, largely in vertical longitudinal section, of means for moving the upper or lower case shift of the typewriter;

FIGURE 5 is a wiring diagram of the power supply and keyboard switch connections for the typewriter;

FIGURE 6 is a partly schematic and diagrammatic view illustrating the use of a Planchet board with the electronic system of the typewriter; and FIGURE 7 is a diagrammatic view illustrating the entire wiring diagram of the system.

In the drawings, wherein for the purpose of illustration is shown a preferred embodiment of the invention and wherein similar reference characters designate corresponding parts throughout the several views, the electric typewriter is illustrated to include a housing or casing 20, having walls such as the walls 21 to 23 extending upwardly from a bottom wall 24, all defining a compartment 25 which houses the operating means 26 of the typewriter.

The operating means 26 includes a plurality of groups of actuating means 27, a plurality of suspension means 32 and 37 for the actuating means 27, a group of selecting devices 49 for reciprocating the means 2'7, a plurality of selecting-operating devices 60 for oscillating the means 27, and a plurality of operative connection means between the means 27 and the type-levers of the typewriter.

Contained within the compartment 25 are six groups of actuating means 27, each of which in the particular form of the invention now described comprises a typewriter function bar 31 of'novel construction, best shown in FIGURE 3, having elongate, substantially fiat side faces 28 and 29 and an upper edge 30. In the example shown, the bars are disposed, when at rest, substantially horizontally, in parallelism, and there may be, for example, forty-eight bars, arranged in six sections or groups of eight each.

A plurality of first suspension means 32 for the bars 31 are provided and each preferably includes a somewhat L-shaped link 33, with its downwardly-extending leg being pivotally carried, at the upper end portion thereof, by a hanger or shaft 35, extending across the compartment 25 and carried, in turn, by the

walls

21 and 22 respectively. The other leg of the link 33 which is shown to extend away from the wall 23, is secured, in a hinge joint, at its outer end portion, to a function bar 31, as by a rivet, with its shank extending through suitable aligning openings in the function bar and link, and a head of the rivet, functioning to retain the two sections of eight function bars each, there may be, by'

way of example, two operating abutments 36 carried by the second and fifth function bars, counting from the bottom as in FIGURE 1, of each section, and preferably disposed closely adjacent the lefthand ends of the function bars as viewed in FIGURE 1.

A plurality of second suspension means 37 for the function bars 31 each comprises a retract-ion coil spring, with its upper end carried by, for example, a rod or bar 38'- extending across the compartment and carried by the

walls

21 and 22, for example; The lower end of the spring extends through a' suitable opening in the function bar intermediate the ends thereof and adjacent the upper edge thereof. The spring is substantially relaxed'when the function bar is in an inoperative position and the spring isdisposedwith its upper end'rearwar'dly (.to the left as in-FIGURE 2) ofits lower end, so that, as the function bar moves to an operative position (to the right as in FIGURE 2), there is tension on the spring tending to draw the bar in the opposite direction to restore the bar to an inoperative position. Preferably, there is a separate means 37 for each function bar;

The group of selecting devices 40 for the function bars 31, include a first row, as of four electromagnet solenoids 41 and a second row, as of four, other electro-magnet solenoids 4'1, withall their housings rigidly carried by, for example, the housing wall 23 so that the longitudinal axes of their armatures 42 substantially parallel the Iongitudinal' axes ofthe function bars 31, and the longitudinal axes of the armatures of the first row are disposed over the horizontal plane of the function bars while the longitudinal axes of the armatures of the second row are below that horizontal plane. The solenoids of the second row are staggered with reference to those of the first or upper row.

Further, with reference to the selecting devices 40, each armature 42- is pivotally connected, as at 43', at its protruding end portion, to one end portion of a substantially straight link 44 which has its other end portion pivotally connected, as at 45, with one end portion of a lever 46 fixedly secured, at its other end portion, to one of eight shafts 47 to 54 inclusive, arranged spaced apart one from another, in two spaced apart parallel rows and all journalled in the

walls

21 and 22 for rotation by the levers 46. That is, there is one shaft for each solenoid and, of course, the length of each link 44 is governed by the distance of the pivotal connection 43 of the armature 42 and link 44, with all armatures retracted, for example, and the location of the specific shaft 47 to 54' inclusive to which the armature is operatively connected. In the plan view of shafts 47 to 54 in FIGURE 3, the lower row, that is 51 to 54, are drawn slightly to the left of the upper row to make clear the positions of the trig- 4. fromthe left hand end of the function bars of FIGURE 3; the second and fifth function bars carry the abutments 36 which are disposed very slightly inwardly of the left hand ends of these function bars; the third and seventh function bars each carry an abutment 56 with its center spaced about A from the left hand ends of these bars; and the fourth and sixth function bars each carry an abutment with its center spaced about A from the left hand ends of these function bars.

The abutments 36 on the fifth function bar of each section is adapted to be engaged by the trigger 55' on the shaft 47, the abutment 56 on the sixth function bar of each section is adapted to be engaged by the trigger 55 on the shaft 48; the trigger 55 on the shaft 49'ris adapted to engage the abutment 56- on the seventh function bar of each section; and the trigger 55 on the shaft 50 is adapted to engage the abutment 56 on the first function bar of each section. The triggers 55 operatively connected with the solenoids of the second or lower row of solenoids are adapted, in the example shown, to engage abutments as follows: The triggers on shaft 51 engage the abutments 36 on the second function bars of each section; the triggers on shaft 52 engage the abutments gers 55 in relation to the abutments- 36 on the function bars 31.

Fixedly secured to each shaft 47 to 54 inclusive is a plurality of spaced apart triggers 55, such as one'for each shaft for each section made up of a group of eight funo tion bars'31, or six mounted upon each shaft. In FIG- URE 2, the dotted downwardly-extending trigger 55 is in the cooked position and the full-line downwardlyextending trigger is in the triggered position, being moved to the latter uponcounter-clockwise rotation of its connected shaft, while the upwardly-extending trigger 55 is in its triggered position with its shaft, of course, rotating clockwise to move its triggers to triggered positions.

Associated with each trigger 55 is an abutment, either the abutments 36 or abutments 56 which may be like the head of the rivet forming the abutment 36 and being fixedly secured to a function bar 31, as projecting from the side face 2 8. For example, in FIGURES 1 and 3, the first and eighth function bars, counting upwardly, carry an abutment 56 with its center disposed about W 56 on the fourth function bars of each section; the triggers on shaft 53 engage the abutments 56 onthe third function bar of each section; and the triggers on the shaft 54 engage the abutments 56 on the eighth function bar of each section.-

Each trigger 55, moving from its cocked to its triggered postion, moves the function bar, carrying the abutment, which the trigger engages, to the right as in FIG-

URES

1, 2 and 3 upon energization of the solenoid 41 with which the trigger is operatively connected and, when the solenoid is de-energized, the spring of the second suspension means 37 restores the functionbar to its inoperative position, i.e., moves the function bar to the left as viewed in FIGURES l, 2 and 3-.

noids 61 are connected to two oscillative'

members

64 and 65 of each section by means of yokes 66 which are pivotally connected to the protruding ends of the armatur'es 62 intermediate the ends of the

members

64 and 65, which latter are of rigid material. Each

member

64 or 65 is pivotally carried at its rearward end portion by a hanger of shaft 67 carried by the

walls

21 and 22. In order to clear the lower shafts 51 to 54' inclusive, the

members

64 and 65 may be recessed, as at 68, adjacent their rearward end portions (left hand portions as in FIGURE 2) and, at their forward end portions, each provided with an upturned big 69 through which extends an abutment '70, which constitutes the operating member of the selecting-operating device as a rigid rod, bridging the two

members

64 and 65 of each section, the function of which will be subsequently explained. Each lug 69' has attached thereto the lower end portion of an upwardly ex tending retraction coil spring 71 with its upper end portion carried by a suitable support, as a rod 72, which is, in turn, supported by the

walls

21 and 22.

Movement to the right, as in FIGURE 2, of a function bar 31 of any one group will position its forward ends beneath the abutment operating member 70 of the selecting-operating device associated with that group and in the path of movement thereof.

Means to retain the forward ends of the function bars 31 and

members

64 and 65 against any lateral moveby the

walls

21 and 22 with the function bars 31 and

members

64 and 65 extending between these teeth.

Energizing of any of the solenoids 61 will cause the armature thereof to move downwardly, carrying the two

members

64 and 65 with it and, as the abutment 70 moves downwardly, it will tip downwardly any one of the function bars of its group as is in its path, that is, the particular function bar that has been moved forwardly by one of the selecting devices 40. The springs 71 will cause opposite movement of the

members

64 and 65 and the abutment 749. Thus, the function bars are capable of both reciprocation and oscillation.

A plurality of operative connective means 89, forming a part of the operating means 26 and connecting the function bars 31 with the typelevers of the typewriter, preferably comprise a bare wire for each function bar, connected at one end to the function bar, preferably closely adjacent the forward end thereof, being between the comb structure '76 and the lug 69, and connected at its other end to the typelever of the typewriter.

Means 85 for moving the conventional typewriter upper or lower case shift mechanism to upper or lower case is shown in FIGURE 4 and includes a cam member 86 preferably of elliptical transverse section and pivotally carried on pivot member 37 which may be supported, for example, by the

walls

21 and 22. The cam member is provided with a plurality of equally spaced apart pins 88, disposed substantially as in FIGURE 4 and extending from one side face thereof. These pins are adapted to be engaged, one after another, by a vertically reciprocating bar member 8? provided with a hook or beak portion tl having a downwardly opening recess to receive any one of the pins 88 for stepby-step rotation of the cam member 86 during each step. The bar member 8? is operatively connected to the operating mechanism, i.e., a function bar 31 of the typewriter for reciprocation thereof and is restored to its inoperative position as by a retraction coil spring 91 with one of its ends secured to a support )2 carried by the walls of the housing 29 and its lower end attached to the upper end'portion of the bar member 89. A second retraction coil spring 93 attached to one end thereof to the bar member 89 below the cam member 86 and extending substantially horizontally, as in FIGURE 4, may be secured to a support 94 carried by a wall or walls of the housing 2% for causing the hook 99 to hold to the right and engage the succeeding pin 88 when the bar 89 returns to its position of rest after each downward operation.

Rotation of the cam member 86 raises or lowers the bar member 97 which is operatively connected to the upper and lower case movement of the typewriter. The upper limb of the inverted L-shaped lever 95 is secured to the upper end of a retraction coil spring 58 which is secured at its lower end to the bar 97 and a retraction coil spring 99 has its lower end secured to the upper limb of the lever 95 and its upper end secured to a projection ltdtla carried by a wall at the housing 20. The lever 95 which may be pivoted at 96 to the

walls

21 and 22 merely serves to load the spring 99 with energy during the downward operation of the bar 97. This energy assists the cam to raise the bar 97 during its upward operation.

The advancement-of the typewriter carriage one space, following the operation of each typelever, would be effected by a pawl and ratchet arrangement similar to the force feed escapement action in a standard typewriter. It could be powered by the reaction of a spring energized by the space bar action common to the typelever movement, or a solenoid could be adapted and connected to the local power supply by a switch operated by the return of the space bar action.

The carriage would be spring-loaded to return to the right when the carriage return control is operated, as in a standard electric typewriter. The carriage return would be operated by a function bar.

Referring now to FIGURE 5, there is shown a wiring diagram of an electric circuit including a power supply and keyboard arrangement to provide for the repetition of each function, while the key on the typewriter keyboard is held depressed. Here, the electric switch contacts are illustrated as wired in series with each other to prevent the operation of two functions at the same time.

Associated with each letter key of the keyboard is a pair of key switches, each including a switch key 159, a pair of switch contacts 15% and a pair of switch contacts 153. For each letter there is a different combination of

switch contacts

156 and 153. There are six series of eight switches each, so that altogether there are 48 cooperating pairs of switch cont-acts which are connectablc in dilferent combinations to each of the letter keys and other function keys of the keyboard. The mechanical linkage shown in 6 only pertains to the contacts shown because the other contacts are associated with solenoids other than the two shown in the drawing.

Upon depressing the keyswitch for example, a pulse of direct current flows from the charged capacitor 151, through the resistor 152 and the contacts 153 to a selecting device solenoid 61 and a selecting device solenoid 41 through the contacts 156 to the other side of the capacitor 151.

The voltage developed across the resistor 152 charges up the capacitor 157 through the diode 158 and biases off the thyratron 159. The flow of current through the thyratron 159 to the capacitor 151 is switched oil until the charge on the capacitor 157 leaks away through the resistor 16d sufficiently to allow the thyratron to again conduct and charge the capacitor 151. v

Only four of the six keyswitches controlling the electromagnet or solenoid 61 are shown in FlGURE 6, and only four of the eight keyswitches controlling the electromagnet solenoid 41 are shown. It will be obvious from the drawing particularly FIGURE 7 that wiring the contacts of the switches in series with each other, makes it impossible for two solenoids 41 or two solenoids 61 to receive power from the power supply X at the same time, because the depressing of a keyswitch opens the circuit to all subsequent keyswitches associated with the series of specific solenoids.

It is obvious from the foregoing description of the mechanical action of the typewriter that the selectingdevice solenoid 41 must complete its operation before the selecting operating device solenoid 61 begins its operation. The action of the solenoid 61 is delayed by adding'inertia to the electrical circuit and delay means may be provided, for example, in the form of a shunt capacitor 155. The shunt capacitor also has other advantages when the electronic typewniter is used in conjunction with the electronic equipment mentioned in my United States Patent No. 3,032,607, issued May 1, 1962, referred to above.

When the selecting device solenoids 61 are operated in series with the selecting-operating device solenoids 41 in FIGURE 6, a large capacitor across the solenoid 61 causes a very large initial current to flow in the solenoid 41 the instant the keyswitch 150 is depressed. The impedance of the solenoid 41 delays the voltage rise across the solenoid 61.

FIGURE 7 shows a method used for connecting the typewriter of this invention to a conventional P'lanchet board 165. Each contact 166 on the board corresponds with a function of the typewriter keyboard. The insulated probe 167 is electrically connected to the pulsating direct current power supply 168 by a single wire cable 169.

As illustrated, the lead 176 from a. contact on the board 165 carries the electric current to the diodes,

ing solenoids permits the use of half the power supply voltage necessary for series operation, as in FIGURE 6, and there is therefore, less dangers to the operator from electrical shocks.

The variations in the voltage and current values of the power supply, when changing fromkeyboard to Planchet board operation, can he efiected automatically by the wiring of the plug-in connectors as is believed plain.

Because of the greater work they have to do, it is necessary for the selecting device solenoids 61 to receive approximately four times the electrical power required by the selecting-operating device solenoids 41. It is necessary, therefore, for the impedance of the solenoids 61 to be four times that of the solenoids 41 when they are connected in series, but only one-quarter of the impedance of the advancing solenoids 4 1 when they are connected in parallel. This change is arranged by winding all the solenoids with two equal impedence windings and bringing out the connections of both windings of each solenoid to the contacts of the connector socket. The connections to the plug from the Planchet board are arranged to connect the two windings of the solenoid 61 in parallel, and the windings of the solenoids 41 in series. The plug connecting the keyboard arranges the solenoids 61 in series and the windings of the solenoids 41 in parallel.

Various changes in the size, shape and arrangement of parts may be made to the form of invention herein shown and described, without departing from the spirit of the invention or scope of the claims.

' What I claim is:

1. In an electrically operated typewriter, in combination,

a keyboard having a plurality of keys;

a plurality of typelevers;

a plurality of actuating means each of which actuating means is operatively coupled to a corresponding one of each of said typelevers;

a group of at least two selecting-operating devices each having an operating member movable in a predetermined path, each of said selecting-operating devices being associated with a group of at least two of said actuating means, said selecting-operating devices including a first group of electromagnets of which an electromagnet is coupled to each of said selecting-operating devices for moving the operating member thereof;

a group of at least two selecting devices, each of said selecting devices being associated with one actuating means in each group of said actuating means, said selecting devices including a second group of electromagnets of which an electromagnet is coupled to each of said selecting devices for moving those actuating means with which the selecting device is associated from an inoperative position to an operative position in which a portion of each of those actuating means lies in the path of movement of the operating member of the said selecting operating device associated with the group of actuating means within which that actuating means is included; and

electrical circuit means including means for supplying electrical power to said electromagnets, switches interposed between said supply means and said electromagnets and operated by the keys of said keyboard to. energize an electromagnet of the second group of electromagnets coupled to one of said selecting devices and an electromagnet of the first group of electromagnets coupled to one of said selecting-operating devices each time a key of said keyboard is depressed, and inertial means connected across the electromagnets of said first group of electromagnets whereby said one selecting-operating device is caused to function after said one selecting device.

2. In an electrically operated typewriter, the combination as claimed in claim 1, wherein the inertial means tion claimed in claim 1, wherein said supply means in cludes a capacitor, means for charging said capacitor and means for discharging said capacitor when a key of said keyboard is depressed to provide a pulse of current.

5. In an electrically operated typewriter in combination,

a keyboard having a plurality of keys;

a plurality of typelevers;

a group of at least two selecting-operating devices each having an operating member movable in a predetermined path, each of said selecting-operating devices being associated with group of at least two of said actuating means, said selecting-operating devices including a first group of electromagnets of which an electromagnet is coupled to each of said selecting-operating devices for moving the operating member thereof;

a group of at least two selecting devices, each of said selecting devices being associated with one actuating means in each group of said actuating means, said selecting devices including a second group of electromagnets of which an electromagnet is coupled to each of said selecting devices for moving those actuating means with which the selecting device is associated from an inoperative position to an operative position in which a portion of each of those actuating means lies in the path of movement of the operating member of the said selecting-operating device associated with the group of actuating means within which that actuating means is included; and

electrical circuit means including means for supplying electrical power to said electromagnets, switches in terposed between said supply means and said electromagnets and operated by the keys of the keyboard to energize an electromagnet .of the second group of electromagnets coupled to one of said selecting devices and an electromagnet of the first group of electromagnets coupled to one of said selecting-operating devices each time a key of said keyboard is depressed, and inertial means connected across the electromagnets of said first group of electromagnets whereby said one selecting-operating device is caused to function after said one selecting device.

6. In an electrically operated typewriter, in combination,

a keyboard having a plurality of keys;

a plurality of typelevers;

a group of at least two selecting-operating devices each having an operating member movable in a predetermined path, each of said selecting-operating devices being associated with a group of at least two of said actuating means, said selecting operating devices including a first group of electromagnets of which an electro magnet is coupled to each of said selecting-operating devices for moving the operating member thereof;

a group of at least two selecting devices, each of said selecting devices being associated with one actuating means in each group of said actuating means said selecting devices including a second group of electromagnets of which an electromagnet is coupled to each of said selecting devices for moving those actuating means with which the selecting device is associated from an inoperative position to an operative position in which a portion of each of those actuating'means lies in the path of movement of the operating member of the said selecting-operating device associated with the group of acincluded,

electrical circuit means including means for supplying electrical power tosaid electromagnets, switches interposed between said supply means and said electromagnets and operated by the keys of said keyboard to energize an electromagnet of the second group of electromagnets coupled to one of said selecting devices and an electromagnet of the first group of electromagnets coupled to one of said selecting-operating devices each time a key of said keyboard is depressed, and inertial means connected across the electromagnets of said first group of electromagnets whereby said one selecting-operating device is caused to function after said one selecting device.

7. In an electrically operated typewriter, in combination,

a keyboard having a plurality of keys;

a plurality of typelevers;

a plurality of actuating means of which actuating means is operatively coupled to a corresponding one of each of said typelevers;

a group of at least two selecting devices, each of said selecting devices being associated with one actuating means in each group of said actuating means said selecting devices including a second group of electromagnets of which an electromagnet is coupled to each of said selecting devices for moving those actuating means with which the selecting device is associated froman inoperative position to an operative position in which a portion of each of those actuating means lies in the path of movement of the operating member of the said selecting-operating device associated with the group of actuating means within which that actuating means is included; and

electrical circuit means including means for supplying electrical power to said electromagnets, switches interposed between said supply means and said electromagnets and operated by the keys of said keyboard to simultaneously energize an electromagnet of the second group of electromagnets coupled to one of said selecting devices and an electromagnet of the first group of electromagnets coupled to one of said selecting-operating devices each time a key of said keyboard is depressed, and inertial means connected across the electromagnets of said first group of electromagnets whereby said one selecting-operating device is caused to function after said one selecting device.

8. In an electrically operated typewriter, in combination,

a keyboard having a plurality of keys;

a plurality of typelevers;

a plurality of function bars each of which function bars is provided for operating a corresponding one of each of said typclevers, said function bars being arranged side by side in a plane adjacent to said typelevers;

coupling means operatively coupling each function bar with a corresponding typelever;

a group'of at least two selecting-operating devices each having an operating member movable in a predetermined path, each of said selecting-operating devices being associated with a group of at least two of said function bars, said selecting-operating devices including a first group of electromagnets of which an electromagnet is coupled to each of said selecting-operating devices for moving the operating member thereof;

a group of at least two selecting devices, each of said selecting devices being associated with one function bar in each group of said function bars said selecting devices including a second group of electromagnets of which an electromagnet is coupled to each of said selecting devices for moving those function bars with which the selecting device is associated from an inoperative position to an operative position in which a portion of each of those function bars lies in the path of movement of the operating member of the said selecting-operating device associated with the group of function bars within which that function bar is included; and

electrical circuit means including means for supplying electrical power to said electromagnets, switches interposed between said supply means and said electromagnets and operated by the keys of said keyboard to energize an electromagnet of the second group of electromagnets coupled to one of said selecting devices and an electromagnet of the first group of electromagnets coupled to one of said selectingoperating devices each time a key of said keyboard is depressed, and inertial means connected across the electromagnets of said first group of electromagnets whereby said one selecting-operating device is caused to function after saidone selecting device.

' 9. loan electrically operated typewriter, the combination as claimed in claim 8, wherein the inertial means comprises a capacitor connected across .the winding of each electromagnet coupled to each of said selectingoperating devices.

10. In an electrically operated typewriter, the combination claimed in claim 8, wherein each of said'plurality of function bars is coupled to a typelever by a direct link.

11. In an electrically operated typewriter-, the combination claimed in claim 8, wherein the said supply means includes a capacitor, means for charging said capacitor and means for dishcharging said capacitor when a key of said keyboard is depressed to provide a pulse of current.

12. In an electrically operated typewriter, in combination; a

a keyboard having a plurality of keys;

a plurality of typelevers;

a plurality of function bars each of which function bars is provided foroperating a corresponding one of each'of said typelevers, said function bars being arranged side by side in a plane adjacent to said typelevers; a

a group of at least two selecting-operating devices each having an operating member movable in a predetermined path, each of said selecting-operating devices being associated with a group of at least two of said function bar's, said selectingoperating devices includa first group of electromagnets of which an electromagnet is coupled to each of said selecting-operating devices for moving the operating member thereof;

a group of at least two selecting devices, each of said selecting devices being associated with one function bar in each group of said function bars, said selecting devices including a second group ofelectromagnets of which an electromagnet is coupled to each of said selecting devices ll for moving those function bars with which the selecting device is associated from an inoperative position to an operative position in which a portion of each of those function bars lies in the path of movement of the operating member'of the said selectingoperating device associated with the group of function bars within which that function bar is included; and

electrical circuit means including means for supplying electrical power to said electromagnets', switches interposed between said supply means and said electromagnets and operated by the keys of said keyboard to energize an electromagnet of the second group of electromagnets coupled to one of said selecting devices and an electromagnet of the first group of electromagnets coupled to one of said selectingoperating devices each time a key of said keyboard is depressed, and' inertial means connected across tion;.

the electromagnets of said first group of electromagtio a keyboard having a plurality of keys;

a plurality of typelevers;

a plurality of function bars each of which function bars is provided for operating a corresponding one of each of said typelevers, said function bars being arranged side by side in a plane adjacent to said typelever's; i

a group of at least two selecting-operating devices each having an operating member movable in a predetermined path, each of said selecting-operating devices being associated with a group of at least two of said function bars, said selecting-operating devices including 5 a first group of electromagnets of which an electromagnet is coupled to each of said selecting-operating devices for moving the operating member thereof; a group of at least two selecting devices, each of said selecting devices being associated with one function.

electrical circuit means including means for supplying electrical power to said electromagnets, switches interposed between said supply means and said electromagnets and operated by the keys of said keyboard to energize an electromagnet' of the second group of electromagnets coupled to one of said selecting devices and an electromagnet of the first group of electromagnets coupled to one of said selecting-operating devices-each time a key of said keyboard is depressed, and inertial-means connected across the electromagnets of said first group of eleca keyboard having a plurality of keys;

a plurality of typelevers;

a plurality of function bars each of which function bars is provided for operating a corresponding one of each of said typelevers, said function bars being arranged side by side in a plane adjacent to said typelevers;

a group of at least two selecting-operating devices each having an operating member movable in a predetermined path, each of said selecting-operating devices being associated with a group of at least two of said functionbars, said selecting-operating devices includa first group of electromagnets of which an electromagnet is coupled to each of said selecting-operating devices for moving the operating member thereof;

a group of at least two selecting devices, each of said selecting devices being associated with one function bar in each group of said function bars, said selecting devices including a second group of electromagnets of which an electromagnet is coupled to each of said selecting devices for moving those function bars with which the selecting device is associated from an inoperative position to an operative position in which a portion of each of those function bars lies in the path of movement of the operating member of the said selecting-operating device associated with the group of function bars within which that function bar included; and electrical circuit means including means for supplying electrical power to said electromagnets, switchesinterposed between said supply means and said electromagnets and operated by the keys of said keyboard to simultaneously energize an electromagnet of the second group of electromagnets coupled to one of said selecting devices and an electromagnet of the first group of electromagnets coupled to one of said selecting-operating devices each time a key of said keyboard is depressed, and inertial means connected across the electromagnets of said first group of electromagnets whereby said one selecting-operating device is caused to function after said one selecting device.

References Cited by the Examiner UNITED STATES PATENTS 5/98 Cahill 197-13 7/00 Cahill 19714 10/15 Hausberg 197-14 6/59 Peterson 197-14 10/62 Rywak '317'148.55

OTHER REFERENCES Pages 22-25, November 15, 1956, Rectifiers and Circuits for DC. Relays, Electronic Design. EUGENE R. CAPOZIO, Primary Examiner.

ROBERT E. PULFREY, L. w. VARNER, Examiners.

UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 3,160 ,257 December 8 1964 Claude D'Evelynes It is hereby certified that error appears in the above numbered patent requiring correction and that the said Letters Patent should read as corrected below In the three sheets of draw ngs, 11ne 3, for "Filed March 27, 1962", each voccurrence, read Original Filed Sept. 14, 1960 in the heading to the printed specification, line 5, for "Filed Mar. 27, 1962, Ser. No. "189,220" read Continuation of application Ser. No. 56,051, Sept. 14, 1960. This application Mar. 27, 1962, Ser. No. 189,220 column 1, before line 8 insert The present application is a continuation of application, Serial No. 56,051, filed September 14, 1960.

Signed and sealed this 22nd day of June 1965.

(SEAL) Atlest:

ERNEST W. SWIDER EDWARD J. BRENNER Attesting Officer Commissioner of Patents Disclaimer 3,1'60,257.-0Zaude DEweZg nes, Chatswood, Australia. ELECTRIC TYPE- WVRITER. Patent dated Dec. 8, 1964:. Disclaimer filed Apr. 30, 1965, by the inventor.

Hereby enters this disclaimer to claims 5, 6, 7 12, 13 and 14 of said patent.

[Oflicial Gazette July 15, 1.965.]

Claims

1. IN AN ELECTRICALLY OPERATED TYPEWRITER, IN COMBINATION, A KEYBOARD HAVING A PLURALITY OF KEYS; A PLURALITY OF TYPELEVERS; A PLURALITY OF ACTUATING MEANS EACH OF WHICH ACTUATING MEANS IS OPERATIVELY COUPLED TO A CORRESPONDING ONE OF EACH OF SAID TYPELEVERS; A GROUP OF AT LEAST TWO SELECTING-OPERATING DEVICES EACH HAVING AN OPERATING MEMBER MOVABLE IN A PREDETERMINED PATH, EACH OF SAID SELECTING-OPERATING DEVICES BEING ASSOCIATED WITH A GROUP OF AT LEAST TWO OF SAID ACTUATING MEANS, SAID SELECTING-OPERATING DEVICES INCLUDING A FIRST GROUP OF ELECTROMAGNETS OF WHICH AN ELECTROMAGNET IS COUPLED TO EACH OF SAID SELECTING-OPERATING DEVICES FOR MOVING THE OPERATING MEMBER THEREOF; A GROUP OF AT LEAST TWO SELECTING DEVICES, EACH OF SAID SELECTING DEVICES BEING ASSOCIATED WITH ONE ACTUATING MEANS IN EACH GROUP OF SAID ACTUATING MEANS, SAID SELECTING DEVICES INCLUDING A SECOND GROUP OF ELECTROMAGNETS OF WHICH AN ELECTROMAGNET IS COUPLED TO EACH OF SAID SELECTING DEVICES FOR MOVING THOSE ACTUATING MEANS WITH WHICH THE SELECTING DEVICE IS ASSOCIATED FROM AN INOPERATIVE POSITION TO AN OPERATIVE POSITION IN WHICH A PORTION OF EACH OF THOSE ACTUATING MEANS LIES IN THE PATH OF MOVEMENT OF THE OPERATING MEMBER OF THE SAID SELECTING OPERATING DEVICE ASSOCIATED WITH THE GROUP OF ACTUATING MEANS WITHIN WHICH THAT ACTUATING MEANS IS INCLUDED; AND ELECTRICAL CIRCUIT MEANS INCLUDING MEANS FOR SUPPLYING ELECTRICAL POWER TO SAID ELECTROMAGNETS, SWITCHES INTERPOSED BETWEEN SAID SUPPLY MEANS AND SAID ELECTROMAGNETS AND OPERATED BY THE KEYS OF SAID KEYBOARD TO ENERGIZE AN ELECTROMAGNET OF THE SECOND GROUP OF ELECTROMAGNETS COUPLED TO ONE OF SAID SELECTING DEVICES AND AN ELECTROMAGNET OF THE FIRST GROUP OF ELECTROMAGNETS COUPLED TO ONE OF SAID SELECTING-OPERATING DEVICES EACH TIME A KEY OF SAID KEYBOARD IS DEPRESSED, AND INERTIAL MEANS CONNECTED ACROSS THE ELECTROMAGNETS OF SAID FIRST GROUP OF ELECTROMAGNETS WHEREBY SAID ONE SELECTING-OPERATING DEVICE IS CAUSED TO FUNCTION AFTER SAID ONE SELECTING DEVICED.