US2127514A

US2127514A - Writing machine

Info

Publication number: US2127514A
Application number: US524116A
Authority: US
Inventors: Walter J Hausman
Original assignee: BURNELL LAB Co Inc
Current assignee: BURNELL LAB Co Inc; BURNELL LABORATORY COMPANY Inc
Priority date: 1931-03-20
Filing date: 1931-03-20
Publication date: 1938-08-23
Anticipated expiration: 1955-08-23

Description

W. J. HAUSMAN WRITING MACHINE 'original Filed March zo, 1931 3 Sheets-Sheet 1 Aug. 23, 1938. w. .LHAUSMAN 2,127,514

WRITING MACHINE Original Fi'led March 20, 1931 3 Sheets-Sheet 2 f Aug. 23, 1938.

W. J. HAUSMAN WRITING MACHINE original Filed March 2o, 1931 3 Sheets-Sheet 3 H., IN ww E Q um QN NN m@ Pateniednugiza, 193s Walter J. Hausman, Westfield. N. J.,

Laboratory Company,

Burnell assigner to' Incorporated,

Locust Valley, Long Island, N. Y., a corporation ` rApplication March n20,

1931, serial No. 524,116v

Renewed May 14, 1937 43 claims.,

This invention relates to writing machines or typewriters of the character having changeable type which are supported .or borne by'a shuttle, the invention having for its primary object to 5 provide an improved combination of mechanisms in the machine for 'carrying out the writingoperation.

Heretofore two kinds of typewriting machines have been provided each'having its own advan-vv itsv limitations. For example. one

tages as well as type of machine has type bars, operable by key levers, to 'print against a work sheet on the platen. This type of machine possesses the ture of permitting the work sheet to be introduced for printing without rolling up said work sheet.

It further possesses the highly desirablefeature of a four bank key board. It also has the limitation of a single set of types. The other type of'machine has a type shuttle which maybe inthe form of a wheel or segment, with types thereon with which a hammer engages to perform the printing on an interposed work sheet. This type of machine possesses the 'desirable feature of interchangeability, the type shuttle 25 being replaceably mounted in the machine, but it also possesses the feature, which is sometimes objectionable, of rolling up the work sheet for insertion into a basket from which it is fed to the printing point. This type of machine, has also been limited toa three bank key board. An object of the present invention is toy provide a machine which possesses all of the advantages -of both types of machines, in other words,va machine having a four bank key board, changeable type sets, and the feature of accommodating the i work sheet without rolling it up; the machine being simple in construction so that it may be manufactured to sell at a price which compares favorably with the other commercial typewriting 4o machines on the market.

Ythe invention is to provide Another object of a writing machine with an improved operating shuttle. Y

Another object ofthe invention is in providing the operating shuttle with improved means for demou'ntably securing 'a type bar holder thereto. f

Another object of the invention is to provide a machine which will vgive a greater latitude of 'changeability of,types than has been possible heretofore. To this end the 'replaceable type bar carrier isconstructedin a manner s uch that each type bar thereon may be replaced by one having a different character consistent with ar certain class of work or job to be typed on the machine.

desirable fea-` This feature of differently arranging the typesv (ci. 19t-ici' l on a demountable type carrier is extremely economical over constructions formerly used in which the types have been formed directly thereon, and where,` in order tomeet the type arrangement required by a customer. it has been necessary *to -5 make up' a complete shuttle in accordance with each variation of they arrangement of types. This ,has necessitated the expensiveoperation of making a new die by whichthe type shuttle is subsequently moulded. y With the structure of the pres- 10 ent invention it is merely necessary, when a special arrangement "of typesis required, to take a standard type carrier out of stock at the factory and change the typebars therein' to suit the requirement of the customer. be made by a repair man in the field if a change -of type character is required after the type car-l rier has been in use for some time.

A further object ofthe invention is to providethe type-bar holder with improved means for sup- 20 porting, guiding. and restoring the -type Abars thereon. k

Still another object o f the invention; is to provide an improved combination of means Vbetween a key lever andthe shuttle for locating the various .25 type bars at the hammer which hammer is in alignment with the printing pointsI A still further object of .the invention is to 'provide a power mechanism such as a 'continually runningmotor for loperating the type carrying 30 shuttle to a selected typing position and another j; power mechanism such as a solenoid which is operated, after the shuttle has been moved to ythe selected position, to actuate the hammer to strike the selected type bar of the shuttle. 35

Another object of the invention is to provide novelmeans operable by the key levers to effect a connection of the type carrying vshuttle with the motor so as to drive the shuttle to itsselected position by the motor. f r

A further object of the invention is to provide a writing machine with an improved combination of a plurality of type disposed forwardly ofthe platen roller and a striking hammer cooperable with. the type disposed in front thereof.v

Still another object of the invention is to pro. vide means operable by the vkey levers to select a position at which lthe type carrying shuttle will be stopped, and means including a device simultaneously operable therewithjo cause the 5o motor to actuate the device to operate the shuttle to the selected position whereby the particular type of the shuttle corresponding to theoperated key lever will be positioned in alignment with the hammer, the operation of This change may also 15 which hammer is eifectvedwhen the motor driven device has reached the end of its travel.

A still further object of the invention is to p'ro- I- vide the shuttle with improved locking meansto the appended claims,

-accompanying drawings, exemplifying the in- .suitably `supported `openings I0 f Yone-half of the frame I,

vention, and in Which:-

Figure 1 is a vertical longitudinal section taken through this improved writing machine on a fragmentary staggered line.

vFigure 2 is a vertical transverse section taken approximately on the line II-,H 0f Fig. 1.

Figure 3 is `a fragmentary vertical longitudinal .section taken approximately on the line III-' III of Fig. 2. f Figure 4 is a fragmentary vertical section taken approximately on the line IV-IV of Fig. '6.`

Figure 5 is an enlarged fragmentary vertical section taken through the mately on theline V-V of Fig. 2, Figure 6 isa rear view of the writing machine. Figure 7 is a fragmentary plan view of Fig. 6. Referring lby numerals to the accompanying drawings I designates the writing machine frame having the usual sidewalls 2 and rear end member or Wall 3 joining the walls 2 and longitudinally disposed within the frame I are the,key levers 4 each having a denoting key 5, said key levers near their rear ends being swingably mounted on the transverse shaft 6 which is supported in opposite sidewalls 2.

Some of the key levers are provided each with an upwardly extending cam lug I, the lugs I being in approximate transverse .alinement land disposed adjacent said lugs and extending transversely across the frame I is a fixed or rigidly held vertically disposed -supporting bracket or plate 8 on the machine frame I. Said plate supports a series of horizontally disposed stop pins 9 which arelocated in respective rmed in said plate, each stop pin having a head II and a spring I2 interposedgbetween each head and the back of the plate 8.

The key levers 4 are divided into groups A and B, the .group A being disposed in approximately^ or in other words` to the right ofthe middle of the machine (Fig. 2) and the group B being disposed in'the approximate other half of the frame, to the left of the middle of the machine, the key levers of said groups A and B having cooperation with frames or levers C and D respectively which are located at the rear of the machine frame I and are hereinafter described.

The pin openings I0 of the plate 8 are disposed intermediately of the width of the plate 8, said openings and the stop pins Il carried thereby having relation with the intermediately located key levers of the groups A and B. 'I'he plate 8 is further provided with, openings I3 at each side of the openings I l), each therein a. stop pin I4 of respectiveintermediate or auxiliary levers I5 pivoted at I6 on the rear side of the plate 8, each lever I5 beingoperable by a Y cam` lug I1 of the outer disposed key levers o'f the groups A and B as shown in Figs. 2 and l3.

From an inspection of Fig. 2 which clearly e shuttle when it strikes` the type holder approxistruck from the plate 8 is a rack 25 (Fig. 2).

fof which is guided in a respective groove of said openings having \)bending the pivot wire 32 at either end back to the '70 shows the location of the intermediately 'disposed openings I8 vin the plate 8 for the support of stop pins or selecting devices 9 and t e outer disposed openings I3 for the stop pins or selecting devices I4, it will be understood a stop pin corresponding 4 to each key lever 4 is provided. It is also to be noted that the manner of operating the inner disposed stop pins 9 is different than the manner in which the stop pins I4 are operated. In this connection when one of the inner key levers 4 is 1. depressed, the cam -face I8 acts against the'head II of a respective pin il tomove the forward end of the pin outwardly on the plate 8. When one of the outer key levers'l having thel cam lug Il is depressed, the cam face" I9 thereof will force 14 the lower end of the lever .I5 rearwardly and thus move the pin I4, at the upper end of said lever, forwardly, said pin being supported on the plate 8. Extending forwardly from the bracket or plate 8 is a rigidly held horizontal pin 20 for the support 2( of a ball bearing race 2I and mounted on said ball bearingrace is an oscillatory shuttle 22. Secured to said shuttle on the rear side thereof, and located between said shuttle and the plate 8, is a pinion 23, said pinion being disposed concentric 25 to the pin 20. Horizontally disposed above the pinion 23 and supported `on guides 24 which are having the teeth 26 in mesh With the teeth of the pinion 23, said rackat one end being provided with a pin 21 30 connected to suitable operating mechanism hereinafter described.

The shuttle 22 is provided with a vertically disposed arm 28 and a pair of horizontally disposed arms 29, each armsupporting a threaded stud 30 jon its outer`end and mounted o n each stud is a thumb nut 3|, the studs and thumb nuts beingr for demountably securing a type bar holder 32 to i' the shuttle. or bracket 22.

'I'he type bar holder'32 is in the formv of a 'seg- 40 ment and when mounted on the shuttle 22 is concentric therewith, said shuttle having bifurcated c ears 33 for engagement on respective studs 30. 'I'he type bar holder 32 is ,provided with a series of equally spaced radially disposed slots or grooves 45 34, the number of grooves corresponding to the number ofkey levers 4 of a four bank key board machine there being forty-two key levers shown There is also a total of forty-two stop pins 9 and I4 in the writing machine; each groove 50 34 being for the reception of a type bar 35 each to swing about the pivot wire 36. 'I'he type bars are all straight and extend radially outwardly from the convexed surface of the holder 32. each type bar 65 A being guided almost throughout its entire length in the slot to insure accurate printing, only that portion projecting which supports the type block 38.

From the :foregoing it vwill be understood thatv 60 curvature of the major portion of the wire, and then sliding the wire around until the end passes the type bar which is to be substituted by another one. Subsequently the wire may be pushed back to re-assemble all of the type bars which have 75 been temporarily A removed during'the substitutionof oneV or more.

The type block 38 of each type bar may be made of type-metal or any other desirable material and each is mounted on the outer end 31 of each type i bar. On each type block the types may be disposed one above the other as shown in Figs. -1 and 5. Drilled in each groove 34 of the type holder near the outer end of each groove is a spring pocket 39 for the reception of a'spring 40, each of said springsnormally holding its associated type bar 35 in its normal or'retracted position, the heel portion 4I of each type bar abutting with the bottom portion 42 of respectivev versely disposed shaft machine frame and the ported in end bearings of lugs extending from which are joined at their upper ends by a'horizon. o

guide way is a shoe 5I).v

. outer end of each spring 53 is talptransversely extending portion 48, said portions 48 paralleling the shaft 43. Each of the portions 48 of respective levers C land D is provided with a dove-.tailed groove or guide way 49 and slidable, laterally of them'achine-in each Disposed adjacent the Irearof the writing machine and near the upper portion thereof is a horizontal transversely extending bar or actuating element 5I; said bar intermediate of its, ends being slidably mounted in a bearing 52 fixed on the machine frame. Mounted on said'bar at each side of said bearing is one of two equalizingv springs 53 and slidably engaging said bar at the apaw154. Mounted on said bar and at the opposite side of each pawl is an equalizing spring 55 which is located between the pawl 54 and a collar 56 fixed on said bar. 1

One end of the bar 5I is bifurcated as designated at 51 and secured to said bar in said bifurcation by pin 58 is one end of a lever 59,

' the end of t elever through which the pin-58 an elongated opening 68. The

passes having of the writing lever 59 is pivoted on the frame I machine by the. screw end of'said lever beingpivotally connected to' the pin 21 borne by the rack 25 which is in mesh with the pinion 23 of the shuttle v22.

Secured to the vertical post 48 of the rear member 3 of the frame i is a bracket 62 to support an electric motor 83 which constitutes a driving means f or the shuttle. Extending equal distances from each end of the motor is a motor shaft or rotating device 64, one end of the motor shaft having a left hand threaded length or screw Av whereas the other 4end of. the motor shaft is provided with a, right hand'threaded length or\ screw 66. Each shoe 50 on its inner end ls provided with an upwardly extending ear 61', each being secured to arespective pawl 54 by rivets 68. The outer end of each shoe is provided with avertically ex-B the' mechanism tending ear 69 and secured to each ear 69 and suitably insulated therefrom is a contacting plate 18 which is in transverse and horizontal .aligniment with a pair of electrical contact pins 1 I each pair of contact pins 1I being supported by alug has a thread-engaging bar or treadle 11, the treadle 11 spective sides of the 6I, the opposite or forward l.

12, of insulating material, and secured tothe rear member 3 of the frame I. J s The end of'each pawl 54 which engages the bar 5I is providedv with an elongated slot 13 so that the pawl may be moved transversely of said bar and the opposite end'of each of said pawls tooth as designated at 14, the teeth 14 to engage the screws on the motor shaft 54. On the lower edge of each pawl 54 is a depending lug 15, each lug being cooperable with a respective guide strip 16, each of which is secured to the rear member 3 of` the frame I beneath each pawl. l

Each of the levers C and D at its lower end vis provided with a horizontally disposed universal of the lever C overlying the rear ends of the group A of key levers 4 and the universal bar or treadle 11 of the lever D overlying the rear ends of the key' levers 4 of the B group on the other side of the writing machine.

To cause the type bar 35 to print there is provided a hammer 18 which is located in alignment with the printing point and which is formed on the upper end of a vertically disposed lever 19 which is located in front of the type carrying shuttle 22, said lever at itslower end being pivotally connected at 88 to the` plunger armature 8| of a solenoid having a coil 82 which is horizontally supported in the machine above the key levers 4 and in the approximate longitudinal center of the machine. The lever or printing element 19 is pivoted intermediate its ends at 83 to f 9 and I4 vare arranged in a curve concentric with the supporting pin. 28 or axis of the shuttle 22S so that the pins I8 and I4 are all within range of the stopping projection 85 formed on the' end of the depending arm 88 of the shuttle 22. Carriedl` by said arm 86 is a slidable latch or anti. rebound device 81 having a beveled catching portion 88 disposed on one side of the projection 85 and a beveled catching portion 89 disposed on the other side of said projection 85,` said catching portions 88 and 89 and the projection 85 being adapted to snap over the active stop pinl 9 or I4 and forming retaining notches 90 and 9|- on reprojection 85. It will be understood that the latch through tlie medium of the portions 88 and 89 prevents rebound of the shuttle stop from the active pin o thus prevent printing out of alignment with the printing point. if

The

conductor wires

92 and 93 of the contact pins 1I,- Fig. 6, on each side of the machine are solenoid coil 82.

As shown inv Fig. 2, certain of the typev bars 35 'are lacking `in the gaps E indicated on the type holder 32. ly showing the type bar grooves 34d` and the' spring pockets 39. In a complete machine however, the type holder 32 isprovided with a complete set of type bars.

e In this improved writing machine, each key lever is associated with a specific type bar of thel set of type bars carried by the type holder 32, and upon the depression of a particular key lever,

be operated so that the corresponding type bar on thev type holder 32, will be moved to the vertical center as indicated by the dotted lineF, in striking alinement with the hammer 38 for printing a character from the particular or selected type.

of the machine will be caused to This is for the purpose or more clear- The operation is as follows:-

The motor is put into operation by a switch,

not shown, to continually revolve the shaft 64 thereof. When a denoting key 5 is depressed,

5 the key lever 4 thereof at its forward end is moved downward vand by reason of said lever being swingably mounted on the shaft 6, the rear end 94 thereof will be swung xupwardly thereby elevating the universal bar or tr'adle 11 and caus- 10 ing the frame or lever C to swing rearward on the shaft'49. This rearward movement of the le'ver 3v will carry the shoe 50 thereof rearward and as the pawl 54 is fixed to the ear 6l of said shoe by the rivets 68, the teeth 14 of said pawl will be 15 brought into engagement with the left hand thread 65 of the motor shaft 54, the elongated slot 'I3 of said pawl permitting the pawl to Vbe moved transversely of the shaft 5| to connect the pawl with the motor shaft.

Thelateral movement given' to the pawl 54 will cause the depending lu'g 'l5 thereof to engage and be held on the outside of the guide strip 16 on the lever group A side of the machine (see Fig. 4). and as the motor Ashaft 64 is revolving,

the teeth 14 of the pawl 54 will be acted on by the left hand threaded length 65 and the pawl 54 will be moved leftwardly in Figs. .6 and 7, the guide strip |56 holding the pawl in engaged position with the threaded portion or screw 65 while it is moving along said screw. The outward travel of the pawl 54 will compress the spring 55 on the bar 5| sumciently to act upon -the associated collar 55 moved in the same direction thereby swinging f the lever 59 on its pivot screw 6|, the forward end of said lever 59 which is engaged at 21 to the rack 25 causing said rack to be moved in the direction'of the arrow 95 shown in Fig. 2 or in other words, leftwardly of the machine.`

40 In addition to the downward depression of the key lever 4 actuating the lever C, simultaneously therewith the cam face I8 of the leg 1 of said lever will engage the head of the associated pin 9 to actuate the latter to project its forward end into the path of the projection ss of the arm 86 of the shuttle 22, the operated pin 9 determining the position at which the shuttle 22 will be stopped when the shuttle is actuated by lever 59 through the medium of the rack 25 and pin- When the shuttle arm 86 reaches the actuated pin 9 or 4 the catching portion 89 of the latch 91 snaps o'ver the selected stop pin and while the pin 9 engages the stopping projection 9| of the shuttle, the latch is drawn into locking position by the spring 96 of said latch and the i pin 9 will be engaged in the notch 99 between the catching portion 88 and the projection 85, the catching portion 88 thereby holding the shuttle against return movement.

' As the shoe 50 reaches the end of its travel \by reason of the pawl 54 engaging the left' hand thread 65, the plate 10 of said shoe will engage the related contact pins 1| thereby closingthe electrical circuit of the solenoid 82 by which the armature 8| will be drawn inwardly of the solenoid coil thereby causing the hammer 'I8 of the lever'19 to strike the type bar 35 which has been moved into alignment therewith and which type bar corresponds to the particular keylever 4 operated. During the striking operation of the hammer 'I9 on the position type bar 35, the desired character 96 will print on the work sheet on the platen 75 97 of the carriage 98 which is disposed rearwardso thatthe bar 5| is ly of the type carrier 22. As each type bar will carry a pair of type characters one above the other, the upper character will be used for print- Y ing by shifting theplaten into printing position with the upper character in the usual manner. g After printing, the key lever is returned to its normal position by a spring element or the like (not shown) and the stop pin 9 will be returned by the spring I2 thus releasing the shuttle for return movement.

The pawl 54 after completing its travel by means of the left hand thread 65 will be permitted to be released by the lug 'l5 thereof riding olf the guide strip 16 and the spring 99 of the lever C will return said lever to its neutral 15 position 'as shown in Fig. 1. Upon the release of the pawl 54, the spring 55 which was compressed by the pawl to effect the longitudinal movement of the bar 5| for actuating the lever 59, will be released so that,it can expand to an 20 equalizing position with the other springs' 53 and 55 on said bar 5|, and thus return the pawl 54 into its neutral position. As the bar 5| was moved by the pawl 54 relatively to the intermediately disposed bearing 52, the other Ipawl 54 25 (at the right in Figs. 6 and 7) was also caused to travel on the bar 5| by its associated springl 55, located between said pawl land the collar 56 secured to the shaft 5| although said pawl 54 which is associated with the other half B of the 30 key levers was not brought into engagement with the right hand threaded portion 66, the travelling movement therefore given to the latter pawl 54 being an idle movement caused by the spring 55, 4said pawl being returned to normal axially 35 of the shaft 5| by the spring 53.

As the bar 5l is moved to its normal or entral position, the lever 59 which is secured to one end of said bar by the screw lilA will also return the shuttle 22 to its normal position through the 4o rack 25 and pinion 23.

Obviously, the release ofthe pawl 54 from engagement with the left hand thread 65 of the motor shaft 64 will cause the electrical circuit in which the solenoid 82 and pins "Il are located 45 to be broken by reason 'of the plate 10 of theI shoe 50 being withdrawn from contact with the pins 1|. Upon the breaking or opening of the electrical circuit, the striking hammer 18 of the solenoid 82 is swung to its normal position by 50 means of a spring 82a.

When a key lever 4 of group B is depressed at its denoting end, the universal bar or treadle 11 of frame or lever D will vbe elevated by the rear end 94 of the depressed key lever thereby caus- 55 ing the lever D to` swing rearward on the shaft 43 and carry the pawl 54, supported on the lever D, into engagement with the right hand thread 66 ofthe continually revolving motor shaft 6d.'

The engagement of the toothed end of the pawl ,G0 54 with the revolving right hand thread 66 will cause the pawl Vto be moved outwardly along the shaft 64 thereby compressing its related spring 55 on -the bar 5| suillciently to act upon the adjacent collar 56, the action of the pawl against the 65 spring 55 and collar 56 causing the bar 5| to be moved in the same direction but in an opposite direction to which it is moved when a key lever 4 of the A group is depressed and consequently the lrack 25 in mesh with the gear 23 will swing the 70 shuttle 22 in an opposite. directionV or counterclockwise in Fig. 2.

It is to be noted that the key levers 4, of both the A and B groups, which are located near the middle of the machine, are provided with the cam lugs 1 and act t s directly on the pins 9 whereas the outer disposed key levers 4 .are provided with the lugs I1 which' act on .ment of intermediate stop pins I4 through the intermediate levers I5. This arrangelevers I5 is provided for the pins I4 on each side of ther medium of reason that the stop I' supporting plate 8 are disposed in an arc struck levers I5, betweenl the part of having a lug I1 is operated', the associated lever s C or D is tilted rearwardly 'for connecting the associated paw154 with 'the' respective threaded the motor shaft 94 `to effect the actuation of the bar 5I, lever 52 and rack 25\to actuate the type carrying shuttle 22 by the. pinion 23 engaged wardly to move the 5I, lever 59 and shuttle by the rack. Simultaneously therewith the lug I1 will force the lower end of the lever I5'rearassociated pin I4 forwardly to project its end into the path of the Aprojection 85` of the shuttle-22 for setting the selected type bar in alignment with the hammer-"18 for actuation, to print against the platen, by said hammer. Upon the release of the operated key :lever 4, all of the actuated parts will be returned to their normal positions, said key lever per-- mitting the return of the operated frame C or D to'eiect the release ofthe pawl 54 from its associated threaded part of the motor shaft 54, whereupon the springs 53 'and 55 will return the bar- 22, the stop pin I4 of lever I5 being forcedl from the path of travelof the projection 95 of the shuttle 22 by the spring I4a when the key lever 4 is released. As the bar 5I moves back to normal from either side of its machine the active -svvitch4 plate 10 leaves the contact pins 1I to open the circuit in which the coil A92 of the solenoid is connected thus deenergizing the solenoid and permitting the return of the hammer 19.

It will be understood that the type`bar shuttle 22 moves through different angular distances del pending on the selected type bar; the extent of movement depending on the active stop pin corresponding to the selected type bar and the associated key lever. Further that the active connecting pawl 54 moves always the same distance laterally of the machine irrespectiveof the extent of angular movement of the shuttle. Consequently the element 55 vwhich transmits movement of the pawl 54 to rod or bar 5I is resilient or in the form of av spring to compensate for such variable movements of the shuttle. In other words. whenone of the inner typebars is selected theshuttle 22 is arrested early before the pawl has moved the full length of the screw on the motor shaft 54. Under these conditions the pawl continues to'move laterally and further com` presses the spring 5I until the outer end of the screw is reached by said pawl. Thus eachspring 55 serves as a compensation device by which the shuttle is moved a variable distance b y the pawl 55 having a movement the extent of which is always constant.

It will further be understood that whenthe rod or actuator 5I is being moved leftwardly in Fig. t/by the pawl. 5'4 at ther left through the medium of the associated spring 55', that the

springs

53 and 55 at the right in Fig. '1 are being compressed .side of the iixed support 52,

bar'5I the other spring vfor said bar assisted Aposition'lengthwise of the bar 5 I,

. end of the screw or worm on the motor shaft because they are located between the fixed support 52 and the collar 56 fixed on the rodf5l, and that when the rod is moved rightwardly that the

springs

53 and 55 atthe left in Fig. '1 are compressed. Thus it follows that upon the release of-v the shuttle from its active springs v5,3 and 55 serve position the compressed to return it tounormal through the rod 5I and the connected parts including the lever 59, rack 25 and pinion force of the two sets of springs, one set at each to hold the shuttle in a central or normal posi- 23, the v balancing each other l' tion. It will also be understood that while one of the springs 55 functions'to drivethe actuator 55 acts as a return spring A fmther purpose of each spring 53 is to assist in holding lthe associated pawl 54 in its proper the force of the springl 53 balancing that of the spring 55 when the pawl 5Iv is in its normal position a't the inner and at the inner end of the locking plate 54.

The type bar holder 32 is demountablyl secured to the shuttle 22 and'in the use of a writing ma.-

bythe associated spring 53.

chine, of this improved character, several type holders 32 arev provided, each bearing a different style of characters, and in the event the operator has occasion to change to a different style lof type, the holder 32 can be readily vremoved by loosening the thumb nuts 3I to remounta holder having the desired style of type. It will be understood that the studs serve not only to enable the detachabillty of the type bar holder but'they also serve to, accurately locate said holder on the shuttleh'with respect to the printing point and with respect to the hannner 18.

i Obviously constructional modifications of the '.device are possible without departing from the spirit of the present invention and therefore it is to be understood that it is not necessary to limit the invention by the terms used in the foregoing description, excepting such as theJ state of the art may require.

The unique disposition-of the type carrier 22 in the writing machine and the vertical transverse swinging thereof, permits its location between thestrlklng hammer 18 and the platen rollthe writing of the machine er 91 so that the type bars 35 of the type carrier 22 can be desirably actuated to print on the record sheet of the platen roll 91.

What I claim iszof a platen, a type bar unit located at the` front of said platen, said platen, said unit including a body rhaving a thin web, a thick flange on the .said web,'said flange having radial slots therein,

thel type bar unit to said bracket to f acilitate75` a type bar actuator in front ofk with said actuator, a

outer edge of ported on said pivot wire, one of said type bars o slot, the type bars extending out- 1. In a typewriting machine, the combination ,55

replacement of the type bar unitat will by an- 'other typebar unit having a different style of of a platen, an actuator, 'a shuttle element, means to support said shuttle element forl oscillatory movements, a type bar support element. type bars, means to pivotally carry the type bars on said support element, and means for locating the type bar support element on the shuttle element,

said means including studs on one of said elements to engage in apertures in the other element, said last mentioned means operating to demountably secure the on said shuttle element.

`4. In a typewriting machine', the combination of a platen, an actuator at the front of the platen, l

a unit including types disposed between said platen and said actuator, said actuator to cooperate with the types of said unit to cause them to print one at a time against the platen, a shuttle for the type unit whereby any one of the types may be positioned in registration Vwith the actuator, a pivot for said shuttle, and means for demountably attaching said type unit on the shuttle without disturbing the shuttle pivot, .said

`means being arranged to permit the type unit to be moved between the platen and the actuator to or from vthe shuttle.

5 In a typewriting machine, the combination of a'type shuttle, key levers, a drivingmeans including a constantly rotating device, intermediate mechanism whereby the shuttle may be operated by saidV device, said intermediate mechanism being normally disconnected `from thedriving means, means'operableby the key levers to effect a connection of the intermediate mechanism with the driving-means, said intermediate mechanism including -a pawl, means operable by the key levers to effect an actuation of the pawl to connect it with the rotating device, and a lock--- ing device along which the pawl is adapted to move while being actuated by the rotating device, said locking device being eilective to prevent accidental release of the pawi from the rotating device until the pawl reaches the end oi.' said device.

6. In a typewriting machine, the combination of a type carrier having type members, a printing element to cooperate with said type members,

'. means to support said carrier for oscillatory movement towards the opposite sides ofthe machine from a central position to locate any one of the type members-in alignment with the printing element, key levers arranged in two groups one'group at each side of the middle of the machine, settableselecting devices to determine the extent of movement .of the type carrier to its printing position, means including an operating lever to actuate the shuttle in from its normal position, an actuator to operate said lever in opposite directions from its normal. position, twocpower driven devices, two connecting elements whereby the actuator'may be connected with any one of the power driven devices according to the direction the type carrier is to be operated by said actuator, and two devices one associated with each group of key levers and with one of the connecting elements and whereby the connection of the actuating lever withfone of the power devices may be effected by any key of the associated connecting element.

7. In a typewriting machine, the combination type bar support element opposite directions moyementtowards the opposite sides of the machine from acentral position to locate any one of the type members in alignment with the printing element, an operating lever for said'type carrier, said lever being also operable in opposite directions from a normal position, an actuating element connected to said lever to operate it in either direction, continually running power driven devices whereby the type carrier may be operated in opposite directions from its normal position, two groups of key levers, one group associatedV with each power driven device, and two devices one for each group of key levers and each being operable by any one of the key levers of the associated group to effect a connection of the associated power driven device with said actuating element. 8. Ina typewriting machine, the combination of a carrier having type members thereon, an element to cooperate with said type members one at a time, saidelement being normally at rest, selecting devices, a stop connected to said carrier, key levers one for each selecting device by which the latter is settable into the path of said stop,

intermediate driving means for said `carrier, c-ontinually 'runningpower means to actuate said intermediate driving means, means operable by the key levers to establish a connection of the intermediate driving means with the continually running power means, operating means for the cooperating element to cause the selected type member to print, means operable by the intermediate driving means to eiect the actuation of `the cooperating element, and a lock on said stop the'key levers to render said power means effective, said actuator being eiective to cause the selected type bar to print against said platen,

and locking means independent of said actuator' 'r and on said support to prevent return movement of the latter while the selected type bar isbeing operated by the actuator.

10. In a typewriting machine, the combination of a carrier having type members thereon, a platen against which the type members may print an element to cooperate with said type members one at a time to cause them to print, selecting devices, a stop connected to said carrier, key levers one for each selecting device by which the latter is settable into the path of said stop, driving" means for said carrier, power means to actuate said driving means, means operable bythe key levers to establish a connection of 'the driving Y means with the power means, operating means forthe cooperating element to cause the selected' typemember to print, and means operable by the driving means to eiect the actuation of the co- .I

operative element. s 11. In a typewriting machine, the combination of a shuttle, type bars on said shuttle, a type ban actuator, means to'posi'tion said shuttle in its d printing position, the positioning means includ.

ing means to drive said shuttle, continually rotating power means izo-actuate the driving means,

a group of key levers, said driving means being the type bar actuator.

12. In a typewriting machine, the combination of a shuttle, type bars on said shuttle, a type bar actuator, means to position said. shuttle in its printing position, the positioning means including means to drive said shuttle, power means to actuate the driving means, key levers, means operable by the key levers-to effect a connection of the driving means with the power means, means including an electric device to operate-the type barvactuator, and a normallyopen switch members individually,

in circuit with said electric device, said switch being engageable by said driving means to close it to energize the electric device to, actuate the type bar actuator. l

13. In a typewriting machine, the combination of a shuttle having type members thereon, means including an element to cooperate with the type members individually, key levers, a fulcruin for said key levers at their reary ends, means to actulocate any one of the typeate said shuttle to members at the cooperating element, an upright plate above the key levers, selecting devices supported entirely on said plate one for each key lever and extended perpendicularly said plate, upright devices one for each key lever, the up-v right devices being located 'between the fulcrum andthe keys of said key levers and extending from 'the key levers to the selecting devices 4so that the associated selecting device `may be set upon an actuation of the corresponding rkey lever, and a downwardly extending arm conne ted to said shuttle to swing in a plane parallel to said plate so that it may engage the set selecting device to arrest the shuttle with the type member corresponding to the actuated key lever at the cooperative element.

14. In a typewriting machine, the combination of a-shuttle having type members thereon, means I including an element to cooperate with the type key levers, a fulcrum for said key levers at their rear ends, means to actu- 'ate said shuttle to locate any one of the type mem- 'b'ers at the cooperating element, an upright plate above the key levers, horizontally movable selecting devices on said plate one lever, said selecting devices being short and supported entirely on said plate, cams one on each i key lever, said cams beinglocated between the fulcrum and the keys o'f said key levers and effective to actuate the corresponding selecting ldevice by the actuation of the key lever, and a stop arm connected to said shuttle and arranged to swing in a vertical plane to enga-ge the set'selecting de' vice to arrest the shuttle. p

15. In a typewriting machine, the combination of a shuttle having type members thereon, means including an element`to cooperate with the type members individually, key levers of the second order, means to actuate said shuttle to locateany one of the type members at the cooperating element, an upright plate above the key levers, short selecting devices supported entirely on said plate one for each key lever and arranged for horizontal movement on said plate, upright levers located above midway of the length of said key levers and operable thereby the upper end of each-upright ate it upon the actuation of devices one for each type bar,

vices being supported on said plate and arranged 20 ment and said actuator.

for each key 7` lve'r engaging one of thevselecting pins to actuv key lever, and a stop arm connected to said shuttle and arranged to Swingin a verticalplane to engage the set selecting device to arrestthe shut-I 5 tle with th selected type member at the cooperat-I ing element. ,f

16. In a typewriting machine, the combination of a platen, a vertically disposed carrier, type bars extending outwardly from said carrier, 10

means including .an actuator arranged Ain Afront of the lplaten by which any one of the type, bars may be actuated to print against said platen, a vertically disposed plate, fixedly supported igeans by which said carrier is pivotally support oscillatory movements toward either side of the machinefrom a normal or central position, means for actuating said carrier, a series of selecting said selecting dein an arc about the pivot of said carrier, horizontal key levers iinder'said plate, cam members extending upwardly from all of said key levers, the cam members of the key -levers near the middle of the machine engaging directly with the corre- 25 sponding selecting devices t set them, intermediate levers extending upwardly from the cam members of the key levers near the sides of the machine to the outer ones of the series of selecting `devicesvand where'by the oiiter selecting devices 30 may be set, and a downwardly, extending arm on said carrier to engage anyl one of said selecting devices which may be in its set position to arrest the carrier withthe selected type ba at the type bar actuator.

` lL In a typewriting machine, the combination of ,printing instrumentalities including a type shuttle, actuating means for said shuttle, and yselectably settable stops to arrest the shuttle in various angular positions, the actuating means 40 ydevice,means to render the connecting element effective, means to retain said element connected so that the actuator is always driven through a constant distance,l and 'a compensating power transmitting device between the connectable elev13. In a typewriting machine, the combination tot printing instrumentalities including a type shuttle,'operable in opposite directions from a normal position, actuating means for said shuttle,

and selectively settable stps to arrest the shuttle in various angular positions, the actuating means including a continually running power device, an actuator for the shuttle operable in opposite di- -.rections to accordingly drive the shuttle in opposite directions, two elements normally ineffective I b'ut connectable individuallyto said power device and actuable thereby always through a constant distance to operate the actuator in opposite directions by said power means and two compensating powertransmitting devices one between each connectable element and said actuator.

19. In a typewriting machine, the combination of a series of type bars, a swingableshuttle, a

holder for said type bars, means including a linger-piece in an accessible position t'o demount- 70 -ably secure said holder on said shuttle and to fai cilitate replacement oi said holder by another one "having a diierent style of types on itstype bars,

means for swingingly supporting saidtype/ bars on said holder, a type bar actuator,

the corresponding n d for ,15

eans for 75 -with respect to each other so that the type bar holdermay be detachedwithout disturbing said actuator or said shuttle.

20. In a; typewriting machine, the combination` of a swingable type bar carrier, a platen, a hammer cooperable with any one of the type bars of said carrier to cause it to print against said platen, a continually rotating power driven shaft,

' an actuator common means operable by said continually rotating power shaft to actuate said carrier, and means independent of said continually rotating power shaft for positioning the type bar carrier so that the vdesired type bar is in striking alignment with said hammer, said hammer and said type bar carrier being located at the front of the platen so that a Work sheet may be inserted around the platen from the rear thereof.V

21. In a typewriting machine, the combination of a platen, a swingable type carrier, type bars on said.carrier, a hammer cooperable with the type bars to actuate any one of them to print against said platen, a continually rotating power driven shaft, means operable by said continually rotating power shaft to actuate said carrier, a series of key levers, and devices operable by the key levers to determine the extent of movement of said carrier for the purpose of positioning any one of thev type bars of said carrier in striking alignment with said hammer. l

22. In a typewriting machine, the combination of a platen, a swingable type carrier, type bars on said carrier, a hammer cooperable with the type bars to actuate any one of them to print against said platen, a power shaft, means cooperable with said carrier and said the type carrier in opposite directions from a normal position to locate any one of the type bars of said carrierin striking alignment with said hammer, a series of key levers, anda series of stop pins, one for each key lever, each pin being operable by its key lever into the path of travel of said carrier to arrest the `carrier in a position with the desired type bar in alignment with said hammer, the type bar carrier and said hammer being located at the front of the platen so that a work sheet maybe passed around said platen to the printing point from the rear thereof.

23. In atypewriting machine, the combination of a shuttle, a demountable holder on said shuttle,

ytype bars on said holder, means whereby the holder may be readily and detachably secured to the shuttle for the purpose of substitution by another holder having types of a diierent style, to all of the type bars, and means to actuate the shuttle while the holder is secured to said shuttle to carry any one of the type bars of said holder into cooperative relation with said actuator.

24. In a typewriting machine the combination of a shuttle, a demountable holder on said shuttle, type bars on said holder, means whereby the holder may be readily and detachably secured to the shuttle for the purpose of substitution by another holder having type bars with another style of types, an actuator commento all of the type bars, means to actuate the shuttle while the holderelement is secured to said shuttle to carry any one of the type bars A Y erative relation with said actuator, and means to power shaft for actuating of said holder into cooplever connected interfere While changing the type bar holder.

25. In a typewriting machine, the combination of a shuttle, a demountable holder on said shuttle, type bars on said holder, means whereby the holder may be readily and detachably secured to the shuttle for the purpose of substitution by another holder having type bars with another style of types, an actuator common to all of the type bars, means to actuate the shuttle to carry any one of the type bars of said holder into cooperative relation with said actuator while the holder element is secured to said shuttle, and means to lock the shuttle in its various printing positions, the locking 'means being associated with the shuttle and being free and clear of the type'bar yholder so as not to interfere while changing the type bar holder.

26. In a typewriting machine, the combination of a shuttle, a demountable holder on said shuttle, type bars on said holder meansto actuate said shuttle to drive it to any one of -its printing positions, means cooperating with said shuttle to accurately position the desired type bar at the vprinting point, and means to demountably support and accurately position the type bar holder on theA shuttle with respect to the positioning means and for the purpose of readily substituting the type holder by another one having a diierent style of types.

` 27. In.a typewriting machine, the combination of a shuttle, a demountable holder on said shuttle, type bars on said shuttle, means to actuate said shuttle to drive it to any one of its printing positions, means cooperating with said shuttle to accurately positionthe desi-red type bar at the 28. In a typewriting machine, the combination of a type carrying shuttle, means to support said shuttle for oscillatory movements with respect to a printing point, shuttle actuating. means including a gear secured to said shuttle 'and a rack operable in opposite directions to drive said gear, a demountable type carrier on said shuttle, and means toaccurately locate said carrier concentrically and angularly with respect to said gear.

29. In a typewriting machine, the combination of .a platen, an oscillatory type carrier, type bars on said type carrier, a power device to actuate said type bar carrier selectively in opposite directions from a normal position, key levers, pins selectable by the key levers to determine the extent of angular movement of the type carrier, the key levers being divided into two groups, and two devices one forl each set of key levers and each being operable by any one of the key levers of the associated group to determine the Adirection of actuation of the type bar carrier by the power device, and to render the power device eiective.

30. In atypewriting machine,'the combination of printing instrumentalities including an oscillatory type carrier which maybe moved in opposite directions from a normal position to selectively position any one of the types thereon at the printing point, means including Aan operating to said type carrier, said lever being operable in opposite directions from a norwith the desired type bar mal position to correspondingly actuate the type carrier, means including two clutches normally type carrier by the power element.

3l. Ina typewriting machine, the combination of a platen, a movable support, type bars on said support, said type. bar support being supported in an upright position in frontof said platen and to move in a plane transversely of the machine, a hammer to engage any one of the type bars to cause it to print against the platen, a power shaft,

means operable by the power shaft to actuate the type bar support to thus position a desired type bar in alignment with the hammer, key levers, and pins to'determine the extent of movement required of said type bar support to locate the de- ,sired type 'bar at said hammer, and means ac- -tuable by anyone of said key levers to cause the operable means to-be actuated by the power shaft,

any one of said pins being rendered effective by a corresponding key lever prior to the actuation of the type bar support.

32. In a typewriting machine, the combination of printing instrumentalities including a type carrier, a horizontal pivot extending fore-and-aft of the machine about which the type shuttle may be actuated towards either side of 'the machine. from Aa normal position, key levers, a vertical plate extending transversely of the machine and arranged above the key levers, settable stop pins on vsaid plate, said pins being arranged in an arc extending around the axis of said pivot, an arm on said type carrier to engage any one of said pins to arrest thetype carrier in its various positions, upwardly extending members on the key levers near the middle of the machine to engage the stop pins near the middle of said plate, two groups. of intermediate levers each4 group being associated with the key levers near the side of the machine, and two fulcrum rods, one at each side of said plate whereby the two groups of interlmediate levers are pivotally supportedl on said plate, the lower ends of the intermediate levers being engageable by the associated key levers to actuate the intermediate levers, the intermediate levers slanting upwardly and inwardly of the' machine so that their upper ends engage the pins at the outer ends of 'the set to actuate them, the fulcrum rods slanting upwardly and outwardly on said plate.

33.- In a typewriting machine, the combination of printing instrumentalities including a type carrierl rotatable about a fixed axis, means including a power shaft, intermediate means between said power shaft and said type carrier whereby the type carrier may be actuated by the power'shaft, a group of key levers,a connecting element com'- monto the key levers of the group whereby the intermediate means may be connected'with the power shaft, key levers, means including a device operable by any one of the key levers to render said connecting element eiective, and means independent of the rendering means to retain the be connected differently with connecting element in its connected position until after the type carrier has 'been moved to position the selected type at the printing point. y

` 34. In a typewriting machine, the combination of printing instrumentalities including a type car-V rier rotatable about a fixed axis, means including a power shaft, intermediate means between said power shaft and said type carrier whereby the type carrier may be actuated by the power shaft, key levers, a connecting element whereby the intermediate means may be connected with the' power shaft. means operable by the key levers to render said connecting element effective, and a plate along which the connecting element travels, said plate being effective to lock the connecting element in its connected position until after the type carrier has been located in its selected position.

35. In a typewriting machine, the combination of a platen, a movable type carrier having a horizontal axis, stop pins adapted to be located in the path of travel of said carrier, type bars on said carrier, a hammer cooperable with the type bars to actuate them one at a time against said platen, a power shaft, means cooperable with saidcarrier to actuate the type bar carrier in opposite directions from a normal position for positioning any .one of the type bars in striking alignment with said hammer, key levers, and other means adapted to be actuated by any of said key levers for engaging said first mentioned means with said power shaft. f

36. A writing machine having a platen, a swingable type carrier disposed in an upright position forwardly of said platen and in a plane extendingv parallel to the axis of the platen, type bars onsaid carrier a hammer cooperable with the type bars of said carrier, a ypower shaft, means cooperable .with said carrier and said power shaft to'actuate said carrier vfor positioning the type bars of said carrier in striking alignment with said hammer, a projection on said carrier, and a series of stop pins each being operable into the path of travel of said projection to arrest said carrier.

37. A writing machine having a platen, a swingable type' carrier disposed in an upright position forwardly of said platen and in a plane extending parallel to the axis of the platen, type bars on said carrier, a hammer cooperable with the type bars of said carrier, a power shaft, means cooperablewith said carrier and said power shaft to actuate said carrier for positioning the type bars of said carrier in striking alignment with said hammer, a series of stop pins each being operable into the, path of travel of said carrier, and av series of key levers each having cooperation with said means and a respective stop pin.

38. A writing machine having a platen, an oscillatory type carrier disposed forwardly of said platen, a hammer cooperable with the type of said carrier to print against said platen, a power shaft,

intermediate means cooperable with said carrier. said intermediate means including a member to be engaged with said power shaft to connect it l therewith so that the intermediate means may be actuated by the power shaft for positioning the type carrier in striking alignment with said hammer, stop pins adapted to be positioned in the path oi travel of said carrier, key levers each being cooperable with a respective stop pin, other means adapted to be actuated by any of said key'levers for engaging said `member of the intermediate means with said power shaft, and

means to return said intermediate means and the type carrier independently of the power shaft.

39. In a typewriting machine, the combination of a platen, a type. bar carrier, type bars thereon, means by whlch\the type bars are pivotally mounted on the carrier, a type bar actuator, means to actuate the type carrier to selectively position any one of the type bars at the type bar actuator, each type bar being detachable for replacement, and means to demountably support the type carrier on the actuating means therefor so that the type carrier may readily be substitutedby another one for printing with another style of types.

40. In al typewriting machine, the-combination of a platen, means including a rotatable device having two opposite faces, a stationary bracket adjacent to one face of said device, means to rotatably support said device on said bracket, a

carrier element havingtype bars thereon to print against said platen, and means Afor detachably mounting said carrier element on said device at the face opposite to the irst mentioned face of said device soas to give ready accessy to the /mounting means for the purpose of conveniently attaching or detaching the type bar carrier. element.

41'. In a typewriting machine, the combination'c of a platen, a rotatable device, stationary means about which saiddevice may be rotated, a carrier element having type`bars thereon to print against the platen, said carrier element extending about cluding type bars to print against said platen, of

two separable elements, means to rotatably support one of said elements, the type bars being supported onthe other one of vsaid elements, and means including members on one of said elements to cooperate with portions on the other element to locate the type bar carrying element accurately on the rotatable element, said last mentioned means operating to secure the type barcarrying element on the rotatable elemen 43. In a typewriting machine, the combination f of a support, type elements detachably mounted on said support so that any one of them may be substituted by another one, meansto actuate said support to selectively register any one of the type elements with the printing point, the actuating means including a bracket, and means for demountably attaching said support to said bracket so that it may readily be substituted by another support-having a different kind of types.

W. J. HAUSMAN.

the axis of said device, means to detachably sup-l `port said carrier element on said device, means