US1355089A - Electeic typewriter - Google Patents

Description

G. C. CLARK. LECTPJC TYPEWRH'EH.

APPncArloN min APR, 2, 1916.

Patented Oct. 5, 1920.

8 SHEETS-SHEEr l.

WITNESS ES:

ATTORNEY G. C. CLARK.

ELECTRIC TYPEWRTER.

APfLicATloN man Amzs, 19m,

2 T, E E H 8 SHEE WITNESSES 2 G. C. CLARK.

ELEcmc TYPEWHHER.

APILICAHON HUD APR. 26, 9l6k Patented Oct. 5, 1920.

8 SHEETS-SHEET 4.

i www E W W ,n W www 6 F ya m WNNN WITNESSES:

Patented Oct. 5, 1920.

l SHEETb bHEET 5 Wrmmssms:

G. C. CLARK.

ELECTRIC TYPEWRHER.

Patented Oct. 5, 1920.

7 SIIEEQ SHELT *1 Gi C. CLARK.

ELECTRIC wwwmrfn.

APPLICHION FILI-U APRE@ 19H3.

. L355O89 Patented Oct 5, 1920 Il SMLFS SHELT fi MHwn GEORGE C. CLARK. OF OAKLAND, CALIFORNIA.

ASSIGNOR OF THREEQFOURTHS TO CHARLES F. GROSS, 0F OAKLAND, CALIFORNIA.

ELECTRIC TYPEWRITER.

Specification of Letters Patent.

Patented Oct. 5, 1920.

Application tiled April 26, 1916. Serial No. 93.739.

To ai? `chan? it mnj/ conca/v1.'

Be it known that I. (inname: (l. CLARK, a citizen ot the Vniteil Htates, residing at Oakland, in the county of Alameda and State of California, have invented new and useful 1mprovelmnltsy in Electric Typewriters, of which the following is a specitication.

This `invention relates to electric typewriters; and has for its object to simplify and improve the construction and operation of such devices.

In carrying out this object. employ a typewriter having the usual standard ke)L hoard in which the keys control electrical circuits for operating the machine. The principal structural features ot' the machine reside in a univerml. oscillating. rocking type har which carries the segmentai printing plate and a traveling contact arm. the latter operative over a segment provifletl with a series of movable stop contact pins, said pins corres-penaling in nunlher aml position to the printing keys on the kevhoartl and operated thcrehlv. oppositeliv placed electromagnets for oscillating the type har having their armatures connected through levers anil hcvel gear mechanism to saiil type har. the circuits ol sait! magnets heing controller] h v the printing keys. \\'l|ereh v to position the type segment in sach a manne as to expoee the {lesirecl character thereI4 on in printing poxition with the platen; elcctromagnets ior rocking t'orwzxrll the type har to cause thll exposed cha acter on the tvpe tare to print. saiil printing magnet having its circuit. closeil through the contact arm anil stop pins' heiorc mentioned: means for shitting the tlvpe har vertically to enable iiiti'erent eases on the type segment to he printell; electrically operated return mechanism for the platen carriage; an automaticailj.Y operated line spacer; automatic inking mealy for the type face: and electricall)u controlled forward aml hackwarll spacing means for thc platen carriage.

Une form which my invention ma)Y assume, is exemplified in the foilowing description and illustrated' in the accompanying llrawings. in Which- Figure l shows a perspective view. parA tialllv in diagram` of a. machine elnhmlying my invention.

Fig. 2 shows a vertical cross section of the same.

Fig. 3 shows a front elevation.y partly in Section. o1 the type bar.y oscillating mechanism and the stop Contact pins and segment.

Fig. shows a pian view of the device shown in Fig. 3, with certain parts broken away for the sake of clearness.

Fig. 5 shows a side elevation of the typeshifting mechanism.

Fig. 6 shows a pian view of the same.

Fig. 7 shows a` front elevation of the same, with certain parts broken away.

Fig. 8 shows a side elevation of the backspacer mechanism.

Fig. .0 shows a front elevation of the hack-spacer mechanism.

Fig. 10 shows a` detail perspective View of the hack spacer mechanism.

Fi". 10a is a fraffmentarv view in erl* I* n spective illustrating a part of the ack spacer mechanism.

Fig. 11 shows a front view ofthe type segment or printing plate. illustrating the aiinement plate.

Fig. 12 shows a rear view of the inking pad. i

Fig. 13 show@v a view` grain. of the carriage spacing mechanism.

Fig. 14 shows a detaii of the loose spring gear einllloved in the carriage return mechamsm.

Fig. 15 shows a perspective view of the line-spacing mechaniem. with certain parts broken away.

Fig. 1G shows a letail view of the cnil of the stationary trame.

Fig. 17 Shows a rletail view oi the magnet energizing mecha nism.

Fig. IS shows a` lliagramniatic view ofthe electric wire connections.

The machine may he of any suitable form` embodying a Vframe 1Uq printing keys 11 and a platen roller l2. The type tace 13 is in the torm ot' a lQeginent nml is tim-4l upon a sleeve 13 splineil to the upper enil of a vertical shatt 14 journaled in a movable frame l5: the latter pivotaily mounted upon the typewriter fran l at 1Wl to swing hack and partially in diarcturn and line- 'forth towaril the platen. The type shaft 14 carries a pinion 16 in engagement` with a toothed` segment 1T. the latter pivotezi to the trame 10 to oscillate sidewise therein.

A Y-shaped link 18 connects. slidahlv. at its stem with the segment 17. and at its arms to the inner ends of heli-crank levers 19, pivoted to the stationary frame at opposite sides thereof and held by retractlle springs 2() inposition with their inner ends raised. A triangular block 21 is seated between the arms of the link 18 to retain the lsame in a position where the toothed segment will be centered upon the pinion, in which position the segmental type plate will have its central portion disposed toward the platen. Fig. 3 shows an enlarged detail of this arrangement.

A contact arm 22 is fixed to the shaft 14 and insulated therefrom and swings horizontally over a divided sector 23, the latter secured to the stationary frame of the typewriter and also insulated therefrom. Movable up and down, through openings in the sector 23. is a series of Contact pins 24, corresponding in number and arrangement to the printing keys of the typewriter andop- @rated therefrom by means of bell-crank levers 25 and transmission links 26. Depression of a printing key raises the corresponding pin 24. whereby to block the movement of the contact arm 22 and establish an electrical connection. This mechanism is best shown in Figs. 1 and 4.

For rotating the type shaft I employ a set of eleetromagnets 27 for each of the bellrrank levers 19 also carried upon the stationary frame 10; the armature 28 of each set being secured to the lever. For controlling the energization of the magnets 27, l provide electrical connections for each. with a suitable source of current, indicated at 20: the latter being in connection with Contact arms 30 actuated by swinging hails 31 carried on supports l0, one at either side of the machine for each set of magnets. "lhese hails are normally held forward, by means of .springs 31a, against lugs 32 on the transmission links Q6. In front of each arm 30 and normally separated therefrom is a contact member connected electrically' to the adjacent magnet. Tbus,when a printing key is depressed. the bail on the corresponding side is moved to swing its arm 30 into contact with the terminal 33 to close the circuit through the adjacent magnet, whereby to draw the bell-crank lever downward at its inner end and, through the toothed segmenti, turn the type shaft a distance until the contact arm 22 strikes the projecting pin 24, whereupon the character of the type segment directed toward the platen will correspond to tlc character on the key depressed. Thc connection between each bail and its Contact arm contemplates the use of a spring pressed locking pawl 34 pivoted on a rearward and downward extension 34a of the hail and engaging a tooth on said arm, as shown in Fig. 17, whereby the arm is moved to contacting position jointly with the bail, and is releasable independently thereof when the pawl is tripped, 1n a manner to be hereinafter described, to return under the action of its spring 30".

The type characters as shown in Fig. 1l, are mounted upon the t pe-face plate 13 in three horizontal rows, t e top row forming the, lower case of characters which are normally presented in printing position in front of the platen 12. The capital letters form the central or second row, and the figures, punctuation marks, etc., form the third or lower row; the characters being equidistant apart corresponding with the stop pins 24. The characters in the `three rows are arranged also in vertical series. TheUtype-face is left blank at the center or normal position of the type segment to allow for spacing by means of the spacing key 39, because it will be seen hereinafter that whenever the spacing key is struck, the type frame will rock forward on its pivots and release the platen carriage for a one space movement. The arrangement of characters to the right and left of normal line position on the type-face, is such that the most frequently used characters have the shortest distance lto travel, while other characters, like q, X, z, most infrequently used, are mounted toward the outer ends of the type-face plate. Starting with `the nor mal central position of the'type segment, the characters on the right-hand side of the center are selected by the keys on the same side of the keyboard and those characters on the left-hand side are selected by the keys on the keyboard at the corresponding sie.

With the segmental type plate properly positioned, the frame carrying the same is rocked forwardly to make the impression and this is accomplished by means of a stationarily mounted electromagnet 35, the armature 36 of which is secured to the lower end of the frame 15. The magnet 35 has included in its circuit the contact arm 22 and sector 23 so that when the arm strikes a projecting pin a circuit is closed through the magnet to draw the armature thereof in a direction to swing the frame l5 toward the platen and imprint the exposed type character. Simultaneously with the rocking movement of the frame the circuit. through the positioning and printing magnets, is broken by means of a rod 37 secured to the lower end of the frame 15 and movable against the pawls 34 to release the contacting arm 30.

A light pressure of any key, either on the right or left half of the keyboard. moves the contact arm of thel switch for that side of the machine on which the key is depressed into the closed position so that current flows to and energizes either the right or left positioning magnet, as the case may be, oscillating the type `shaft and swinging the traveling contact arm 22 carried thereon either to the right or left; and,

simultaneously. the key depresses mechanically pushes up its corresponding stop contact pin 24 1n the pin segment directly into the path of the traveling contact arm so that the latter is arrested in its further movement in that direction. All the stop contact pins mounted in the segment 23 being connected to one of the current-carrying ivires of thc printing circuit and insulated from the rest of the machine and the other cm'rent-czn'rying wire ot said circuit being connected to the printing magnet, which is in turn connected to the traveling arm 22, an electric circuit is established through the printing magnet when the traveling arm comes in contact with and is arrested by the pushed up stop contact pin. Thus the printing magnet is energized and the type face is tilted against the platen to print the letter selected.

At the proper moment during the forward movement ot' the type face to the platen the electric circuits are automatically broken by the lnickward movement of the rod 37. This breakingv of the circuit is so timed that only about halt` ot' the forward movement of the printing plate is done under the attractionV of the printing magnet. the last half of the movement being by inertia of the moving parts. thus giving' the liest results in the printing. Upon striking the platen the frame is instantly restored throu h the medium of a rctractile spring 38, an( the travcling contact arm and type segment. are returned to central position under the action ot' the retractile springs 2l).

To adapt the device to a standard keyboard machine provision for shifting the type plate must be made. This also is accomplished electrically and it is best illustratcd in Figs. Si, and T. Normally the type segment 13 stands with its top row opposed to the platen. so that Whenever a character key ll is struck a type in this row will be imprinted on the paper carried by the platen. To obtain a character in the central or lower row it is necessary to raise the type segment either one or two steps upward. The type segment is carried upon a sleeve 131* splined to the shaft 14 and a pair ot' electroni-aguets 4() and 40a are mounted on the frame lll, with their armatures connected to a hell-lever 4l engaging with the lower end of said sleeve". The armature 42, on the magnet 40, is rigid with the bell-crank 4l wllile the armature 43 of the magnet 4U has a separately pivoted bellcrank extension-.t4 `lying beneath the rearward extension of the bell-crank lever 41. The armature 4;-1 is normally spaced a greater distance from its magnet than the armature l" and the magnet 4U has itsA circuit controlled b v a key marked Fig.", while he magnet llll" has its circuit 'controlled by a key marked cap Thereby the type segment is raised the proper distance to present the desired rowr of characters.

In this connection a latch device is desirable to maintain the type segment 'L3 in raised position, and this comprises a latching dog 45 coperating with spaced projections 4G on the sleeve and litted with a bell-crank extension which carries the armature 47 of an electromagnet 48, as best shown in Fig. 3. The dog is pressed to latching position by a spring 49 so that the sleeve is automatically locked in shit'ted position. The circuit through the electromagnet 48 is closed by a key marked release and thereby the magnet is energized to release the dog.

Tn order to lock the type plate, when printing, and insure proper alinement of the type7 I employ a segmental locking plate 50 as shown in Fig. 4 which is fixed to -the sleeve 13, and turns with the type segment 13, and is of about one-half inch shorter radius than the type segment. The peripheral edge of this locking plate 50 is serrated or suitably formed with V-shaped notches. which latter conform in their position to the vertical rows of type on the type segment.

Directlf alrlfeutrally in front of this plate.

at a point approximatelycoinciding with the normal position of the type segment, is a stationary vertical pin 51, also V-shapcd in cross section. corresponding with the V- shaped notches in the locking plate. 50. This pin is placed about one-sixteenth of an inch from the peripheral edge of the notched plate when the type bar stands vertical and in non-printing position,r so that when the plate is oscillated horizontally the pin offers no obstruction to this free lateral movement. However, the moment that the printing circuit. before described. has closed. through the. arm 22. pins 24 and segment 23, so as to oscillate the frame 15 to print` thc notched plate 50 is also tilted forward Iand the notch in the peripheral edge ot' they plate corresponding to the character on the key depressed on thc keyboard is brought into engagement with the stop pin 5l. thus arresting and locking the universal type bar and preventing further lateral motion of the type segment 13. rThe inclined surfaces of said notches and pin operate to insure perfeet alinemcnt ot' the characters when printing.

Between the con vexed surface of the type plate 13 and the platen roll is removably fixed a concaved velvet inkpad 52. Figs. 4 and 12. normally separated from the typeface. The center ot' the ink-pad corresponding to the central or normal position of the type segment is fitted with a resilient shield ot' metal. or other suitable springy material. in the center ot' which is a square hole 54 just large enough to allow the free passage of a type. so that the type protruding therethrough will strike the paper on the platen and print whenever the type segment is rocked forward. rlhis shield protects the paper on the platen from heilig soiled by the pressure of theadjacent letters. The forward motion of the'tvpe segment also accomplishes the inking of the types by bringing the convexed type-face into contact with the coneaved hiking-pad.

A carriage receives the platen roll, and this carriage is suitably mounted for reciprocation so as to cause the platen roll to traverse the type-face, and its movement in one direction is accomplished by an suitable means well-known in the art an hereinafter explained.

As here shown, the carriage is operated in one direction by means of a spring drum 56. (Fig. 2) to the exterior of which is connected one end of a tape 57; the opposite end being attached to the carriage. Secured to the carriage is a toothed rack 58, into which meshes a pinion 59 journaled upon a support 6l). and having connected to it an escapement wheel 61 providing for step by step movement.` The controlling means for the escapement wheel consists of a duplex dog (32. one member of which is rigidly mounted on an endwise movable shaft 63; the other member being located at the side of the fixed member and having a limited pivotal movement on the shaft 63. said shaft being held by means of a spring 64 in position where the pivoted member is engaged with the escapement wheel. The endwise moving shaft 63 is held against rotation in its bearings and terminates adjacent to the u-pper end of the rocking frame l5. Thus each time the type bar and its frame rock forward to printing or spacing position, the shaft 63 is shifted to disengage the pivot/ed dog member and engage the rigid member with the eseapement Wheel and allow the pivoted member under spring pressuretobe retracted. Then when the frame returns and the .pivoteil dog is rengaged it will yield to permit the carriage to progress one step to the left under the action of the spring drum 56.

The carriage return movement is accomi plished by the depressing of a special carriage return key 64, at the left-hand side of the keyboard. Depresslng key 64 closes a switch G5 in the circuit of a motor. 66. The armature of the motor is mounted on a shaft 67, which shaft and armature have a limited `lengthwise. movement within the lield of the motor. The armature is so positioned with respect to the field that when the field is energized it will so react on the armature that the later is drawn into central position 1n the field, causing the armature to shift from the full line, or normal inert position, Fig. 13, to the dotted line, or active position of the rotating parts. This will cause a corresponding lengthwise shifting of the motor shaft (i7. Shaft (i7 carries a wide spur gear 68 meshing with a gear 69g the latter mountedioose on a eountershaft 7), being yieldingly held thereto by means of a spring 7l which has one end secured to the said gear, and the other end fixed to the shaft, Fig. 14. Thus it is that motion 1s transmitted from gear 69 to shaft 70 through the medium of the spring 71. Splined on to the shaft 70 is a clutch collar 72 which turns with the shafty and slides lengthwise on it and is operated by a lever 73 fnloru'med at 74 and loosely connected with the armature shaft G7, so that the lever 73 is moved back and forth correspondingly with the lengthwise movement of the shaft 67, to carry the clutch member T2 into and out of engagement with a eorrespoiuling clutch member 75. which is Loose on shaft 70. and carries a pinion 'iti meshinfr with a rack 77 on the platen carriage the carriage has a rod 78 on which an ad j ustahle trip or cam T9 is adapted to contact with the beltcrank switch member 8() andV interrupt the motor circuit, so as to cut out the motor and stop the further return movement of the carringe.

then the carriage 55 is moved to the left. so that the cam or trip 79 is out of engagement with the switch member Si?. this switch i member is held in closed posh ion by reason of the action of a spring H1, and thereby the motor circuit is closed at this point. The key-actuated switch 65 closes the motor circuit across the forward section and the moment the field of the motor is energized the armature is pulled to the right into central position with respect to the` field. shifting the shaft 67 to the right rocking lever 73, and throwing in the clutch 72--7. This endwise movement of the shaft fi? has the further function of closing a shunt circuit through switch' members rthis shunt circuit is for the purpose of keeping the motor circuit closed after the pressure is rele:l ed on the carriage return key 64, because the moment the key is released. a spring 83 returns it to raised position. thereby opening the switch 65. Setting the motor in motion causes the shaft 67 to revolve, and the gear 76 acts on the rack 77 to move the carriage back to the right, or until the cam or trip 79 on the carriage comes into engagement with the switch leverl80 mounted on the frame independent of the trip and carriage. As soon as the` cam 79 hits the. switchlever 80 the motor circuit is interrupted at this point, thereby shutting oil' the motor. whereupon a spring 84 acts on lever Til to throw out the clutch 72 and return the armature to initial full line position. shown in Fig. 1?. The cam or trip 79 is adjustably mounted on the rod 7S so that it can be slid along the same :unaY

, ing or turning;r of thi` and clamped wherever desired lo hreali the circuit and stop tho Pairing@ rotnrn at vaY riahle points. The nionlvnt tho r'lutrh T2 thrown ont` tho shunt circuit through switch H2 is interrnplvdr` and thv inolor is not operable until thtl key G4 is* again deprvsed.

Provision is made for tho automatic feed platrn roller coincident with the return of the carriage mechanism, as shown in Fig. l5. This embodies: a ratchet wheel S5 on tho rollt-r operated hy moans of :i rorker-arm SU. carrying a pnwl 8T to Gngagv with tho tooth on Said ratrhet whrvl. A pluto R9, haring: nn inclined faro t0 Coopfrate with t roller 89 on the man R6, is adjuntahly monntvd upon a vortical stem il() of a holdin 9i tho latter being adjustuhly sliduhln upon :i horizontal har 92 fixed to tho frame of the machine. The holder can thus ho moved to position whom thu inclined faire of the plate SS will ho onagrd b v they rolltr 89 :is thil rsu-ringo nuwhanism nears its rr turn ponition, and the-roby th(A plalrn will he tnrnml. Adjuslnunt of thv plate on the` vorticail stom will doter-miml the vxtflnt of turning of tho platen as. for inatairuo, ono, two or three lines..

Tho` sparing is 'ontrollml from tho kry 39 in a Similar mannvr to tho rvgnlar ku'veil on the k(* vhoard.-tln1r Hwiti'h 92 which it rontrols being vonnwftod in the circuit oi' thv printing' magnets 3:1 so that there` is no oscillating movvnwnt ot [lux rontart arm 22, hut thorn in a forward and hat-li 'rorking mowinvnt ol` thix unii'ursial typo shaft 1T and its tramo lf. No printing laiton plano, howivor;y whvn tho har 39 if: doprvh'nod, l'or tho rvnson that thv f'intrr ot' thiA typo son nient li is hlanli` an prorioiisli' llwrrihed.

n ilvrlricallli' 'onlrolloel linlgl-Hpzifor niwhanisnl in provi-lod. as: Shown in Figs. F-L l? and l() and lila. llihrtronmgnrt Uil, loi'utml adiarent to lh(L lootlwd rail; TT, han its virrlxit rontrollwi h v a hawk-sparta' ltvv l-L The* arnniinri 95 oi" Suid magnol is pivotml to thi` frmnr at it loam' rnd and han its al pvr'ifnd pivolial to an man Elli lying hrnoalh thv` rari( TT und having :l hooh lll lo f'opvr alp with the tooth lhprnoiiu Thi al'ni 9G hor-1 an invlinod lng1lblyingfudjafoni to thv rnd oi a rivid Support il. :and :t npring lflli normall)r wtnins: hfl arnnitnrv in poiiion nflwrr tho in;r in hrlsl away from the` ond otA said support so that the nrni f will be? loworrd to rlvzir the rack. lvhm, howuwr, tho kry 94 is doprussml to energize he magnet and aritnntlthi armatura thoroot. forwmd moroznont of tinx armateur will raumJ thi` lng to ride up on thi` support flf? mal ruine', thv arm 9H to engaging' i'rorsition with thv rnil:` whorenion furthr n'iovonn'nl nl' thi arnhiinrff will draw tho uarr'iny'f harlmard on stwp. ly rvpfntin;l thiy oiwra i n thi haelt-:sparing may hi irasw lo any dintnnrlelofiired.

Thr` miliare-nt tar-05, of thv lag? H nml SupY port .(Jl :tre beveled :it their rar OndS to ranno thorn to passy rfiflo hy Side in returning, so that thu pawl will 'luar thu rack.

The :flop pins 2l ari- ;vt to effect :t rontzict with thi1 zii-in 22 lightly in ad 'anrfo of the positioningr oi' 1hr iorrospondin,"T typo rhararters. Tho typtl sugnunt will thus: more forward whon inronlplotvly positionwl. hut tho rtntfring lug- ."l will bring it to proper position lwloro inipai't in nladv with thu philon Thur: thel inlvrval lwtwui-n dolorossion ol' the kry sind rovhing of the` typo traine is soinenvhat shortonld and the spoed otl (.prration ot' the niai'hino vonsequently incronnrd This arIn .22 muy he of Spring*` mati'rilfl und hy zulvaniingf [hv position ot' tho Stop pins, thiJ sprintr arm will rome into 00ntact with thiJ stop pin hclorv the intended typo churartvr has alinod itsaelf with the platen. lnnnidintvl)v the typo nn'ryingr frzunv will begin to rork during the time that it rniaina4 in rontart with thvy stop pin, tho turning` lnaggnv` will rontinue to turn it .sli, rhtl ,f` thu arm 2:2 houding to porniit this.

'llufuni-tion ol' tho paw] Ill is to loi-lc tho hail Ill :incl rontart arm lll tog'ulhvr so that thvy all mow togothrr wln'n :i hoy is dw prossvd. Then whin tho pawl is relou-50d hy th(l rod 3T thi' fontart arm is rvtrarttal hy its Spring thus lil-making tho (-irruit, notwithstandingr llmt thv lngv may still ho duprussmh Thix two parts` rannot thi-waitin' ho lol'lwd loglthol' nnlil ihr lilly is re'lvnsod and tho huil allowwl to ri-tnrn.

Tho liofilioxling and printingr lnagrnvts. togvihir with tlwir :lrnlainrw4 and low-ng wigg'xnonlsal lonlheal rai-h and Y-ahapi-d linlm. :iro lnonntwl upon llnslaionary l'rnnun thv tooth oi" [liv:-;'r1nlit:|l 'urli and pinion living' s-:liphtllir hm'vle'll lo nllon Arilnlii'n nim'onunl. A\ minimum o!" wright iv thun rarrii-l upon the roi-hing' troneo. and lwnio ihr lailwr may la ronnrnri-fl nl lin-hi nlairinl ni-h illumini n thrrvhy linlhi-r inw-rating tho spinal mid rwponisiwiww olh tho inaxhini 'Vlnliiwl( jl i pri'llrr'ahly rondoy ol` rnhhvr lo rliininalr noia,

Among' thiI :advnnnigiwol` this niaohinc :mthi xxl wenn vario :ind rapillir wil h whit-h it nur" la` opvratwl. (in mininnnn physirnl vwrion lwingr rmpiirwl lo lvprrsss thel keyis), praviiinilly unito' economy llo:

lvm :iran` and :rnd Finipvitv nl' ronHlrnf-tion: thi` ninnhor oln parll unil'ilowrl livroin living vastly ninilllvr than lhonv ot tla'. l:i11i'lzi1d inznhinvs non in inw. rhino iha'ulidli' low :in thv rurrent ron Sln'np ion oiy lla) lnagfnots and motor is Small and tho i'arioim f-hi'trifal domino@ omployed :iro ilwirgnod lo -iprratr troni lh? ordinifry light or poiwr wfrvim, Thu impart of ha tjfpi ,ai-gown upon tirplaten living inde- ;wndvnt oi tho tonrh malins the torri of the iniprvninn nni Forni. rla-iulting in a nvati :ipp-uni'ojnrv of tho tjnf-writlan mutter. (lthor Tho opwindingr cost ol'` tho nu.

features of advantage embodied herein are the standard keyboard1 the eleetrieally operated carriage return. the automatic linespaeer. improved system ot inking giving a eleairrut impression, and electrical backspaeer all embodied in a single maeliine of compact form and light Weight which is readily and easily transportable.

`While l have shown and described lierein but one form ot maeliine. it will be understood. nevertheless, that the saine is susceptible of modification, and tlierfore. many elianges in the Construction and arrangement ot the several parts may be employed without departing t'rom the spirit of my invention as disclosed in the appended claims.

Having' thus described my invention. what l Claim and desire to seeure by Letters Patent isl. In a typewriter.` the sidewise oscillating and tore and aft roeking type-Carrying: member. a` keyboard. a eoiitait segment earryinpr a plurality of separate stops, eaih stop beiimT operably eonnerted with a. key on the keyboard. a vontai't arm on the type-carrying member. eooperating;r with said stops aiid swinging over the segment. elertromagnets tor oseillating said typeearrying member in aei'ordanee with 'the key depressed. whereby to position the type1 and eleeti'omagnets energized by rontai't of said arm with a stop to roek said type-earryinp.r member, whereby to print the exposed type.

Q. ln a typewriter. the iombinatioii with a platen and a key-board ot a vertieally disposed type-earrying member mounted for oseillation about its longitudinal axis and lia\.iii; r a roi'king motion toward and from thi` platen` elet-tro-niagnets tor osrillatini; the said member to position tht` type i'hararti-rs thereon in printing relation with the platen and a separate set of elevtril-magnets to roek said member to print the positioned rharaelei'. and means operative by the osrillatinrr morena-nt ol' said type-ear iin;r member to ('ontrol thi` i-iiei'glization ol' the sei-ond set ol" magnets.

fi. ln a typewriter. the eombinalion with a platen and a keyboard` of a type-rarrying member mounted for oseillation about its longitudinal axis and having! a roekiirgr movement toi'ard and troni the platen. elertioinagnels alternateliF ront rolled by the keys to turn said type-rairyinir member about its iei'tii-al axis in opposite direi-tions. whereby to position ouil ol' the tvpieliai'ae ters thereon iu printing; relation with the platen. a stop arm swinging: in unison with said type rarryini;l member. a sei-ond set of elertroinairfnets to rook said types-arryinnr member whereby to print the positioned iliai'aeter thereon. and means aetiiated by the keys lo Vl'orm a iiieelianii'al stop for the eombination ot a stop arm of the type-earryiimY member in its oseillating` movement and also an electrical Contact for energizing the last inlined electromagnets.

4. In a typewriter, the ronibinatioii with a platen and a` key-board of a vertirally dis posed type-earryiiig member mounted tor oscillation about its longitudinal axis aiil having a rocking movement toward and trom the platen. elei'tro-niagnets eontrolled by the keys to turn said tvpihrariixiii; r meno bei' about its vertieal axis whereby to posi tion one of the type eliaraeiers thereon in printing relation with the platen. :i sia-ond set ot' eleetro-magnets to rork said typel earrying member ii'hereby to print tlaposi tiolied eliaraeter thereon. means ae-tiiated by the keys to forni a nieelianii'al stop for thi` type-carrying: member in i s oseillatiiig movement and also an eleetriiral eoiuart tor energizing the last-named eleetrimagnets the roi-.kingl of the typihearrying member to printing' position servingi to break the eletIH trie-al and nua-hanieal vnunet-tion with said key-actuated means simultaneously.

5. In a f ipeivriter. the i-oinbination with a` platen and a keyboard. ot a type-earrying member mounted vtor osi-illation about its longitudinal axis and havin;r a melting movement toward and Jfrom the platen. eleetromagnets eontrolled by the keys tor turn ing said type-carrying member about its longitudinal axis whereby to position a typieharaeter in printing' relation with the plat-en. a stop pin eoiinei-ted with and movable by eaeli ot said keys. an arm on the type-carrying member eoopeinting;l with said stop pins whereby to liiiiit the tiirniun;I4 movement of the type-rarryiiiir member. and a seeond set of eleetroinag'nets ba\'in;r their eireuits closed by the multas-ting).r oi' said arm with one of' the stop pins to roek said type-Y i-airyinig member whereby to print llupositioned rliararter thereon.

6. ln a typewriter. the eombination with a platen and a keyboard. ot' a type rari-ying' member mounted to osi-illate about its longitudinal axis and having a i-oi'king motion toward and from thi` platen. an elei'tro magnet at eaeli side olf the typewriter and operatively eonneeted to the t. \fiieraiijviiiii member for turning the latter iii one dii-w'- tion about its longitudinal axis whereby lo position one of the type i-liaiae-tiirs in print ingrelation with the platen. a switrli I'or i'onti'ollinglv earb of the elertroinagnels. :ind

a swingin.;lr bail at eaili side ol' the tiiawiiter aetod upon by one ball' ol' the ltr; 1 ol' the keyboard to elosii the swileb of thi` adiai'ent eleeti'oinagiiet.

7. ln a typewriter. the i-oiiibinatioii with a platen and a keyboard. ol a type-rairving membri' mounted to osoillate about its loiiyjitiidinal'axis and havin.;r a rorkin; r motion toward and l'ioni the platen, an eiertriinagi-VY lill] net at eaeh side of the type writer and operatively eonnerted to the t vperarr ving inember for turning the latter in one direction about its longitudinal axis. whereby to position one of the type characters in printing relation with the platen. a switch for eontrolling eaeh oi. said eleetromagnets. the keys on one side of the keyboard when depressed aeting to rlose the switeh oi' one ot said elet-tromagnets and the keys on the other side of the keyboard acting when de,- pressed to rlose the switrh of the opposite eleetroniagnet. eleetromagnetie means to rook the type-earrying member, whereby to print the positioned eliaraeter thereon, and means actuated direetly by the roi-king ot' said member to open the elosed Switeh of the positioning magnets.

8. ln a'typewriter, the combination with a platen and a lwyboard` ot' a t v|)eear1'yi1lg member mounted to oseillate about its longitudinal axis and having a roeking movement toward and from the platen` eleetromagnets for turning said tlvpe-earrying member about its longitudinal axis. whereby to position one ol' the eharaetere thereon in printing relation with the platen` operating switehes for said eleetromagnets 'losed by the depression of one ot the keys ol' the keyboard. means: to roel( said typerarrying member. wherebyY to print the positioned rharaeter thereon. and meana aetuated direetlv b v the rocking ol' said tvpe-earrving member to open the elosed switrh oll the positioning magnets.

il. ln a typewriter. the eombination with a platen and a kev--board of a` tvpe-earrving membermounied for oscillation about its longitudinal axis and having z rorking motion toward and YFrom the platen` elet-tromagnets for osrillating said t vpe-'ai'i'ii\g member wherebyP to position a tvpe rhai'arier in printing relation with the platen. a see-oud seiv of magnets to roi-k said member wherebyr to print the positioned ehalarler. aeiuating ronuertions between the positioningI` magneto and the typi-anarrlving member separately supported Vfrom the positioi'iing magnets so ars to remain staliouaxjv while Said member roi-ks. and means on said meut ber to engage with the am uating eonnertious.

10. In a tyl'iewriter. the eombination with a platen and a keyboard` ol' a typir-rarrving member mounted for osr'iilation about its longitudinal axis and having a roeking motion toward and from the platen. elei'tro` magnets 'or oscillating said type-earrying member. wherebyY to position a tvpe ehararter in printing relation with the platen. a sei-ond set of magnets to roek Said member whereby to print. the positioned character. and a segmental gear operatively eomieeted with said positioning magnets t'or turning said tvperarrvingmember about its verti` eal axissaid gear being separately supported from the t vpe-riii'i' ving member and remainingT stationaryY while the latter roeks.

11. In a typewriter. the eombination with a platen and a keyboard. of a t' vpe-e:iii' vii1g member mounted for osrillation about its longitudinal axis and having a roeking inotion toward and from the platen. electromagnets for `oscillating said tvpeaaIrving member, whereinY to position a tlvpe character in printing relation with the, platen. a Seeond-set ot' magnets to rork said member whereby to print the positioned eliaraeter, actuating lneehaniam between the positioning magnets and the type-carrying member, including' a segmental gear. a lever at each side of the typewriter movable by the positioning electroniaguets` and a swinging link slidably and pivotally fonneeted to said levers and to the gear sueh that the three points of eonneetion form a triangle. said link swinging about its pivot point of ronneetion with one of the levers when moved b v the other.

12. ln a typewriter. the eolnbination with a platen and a` lnwboard. ot' a typeearrving member mounted for oseillation about its longitudinal axis and having a rorking mo tion toward and jfrom the platen. eleeiromagnets for oseillating said tlvpeaariving member. \vlu-reb \Y to position a f vpe eliararter in printing relation with the platen` a `Keeond set of magnets to roek said member whereby to print the positioned ehararter. :ntuating merhanisrn between the position ing magneti',n and the t vpe-i:1rr ving member. inrluding a segmental geaixa lever at earh side of the tjifprwriter movable b v the positioning elertroniagnets. a swinging link slillabltY and pivotallv eonneeted` to said levers and to the gear .sm-h that the three points ot' eonneetion forni a` triangle. said link swinging about its pivot point ot' rouneetion with one of the levers when moved b v the other'. and a triangular bloek for rentering .said link.

ifi. In a typewriter. the rombination will a` platen and a inw-board of a tvpeaarrlving' member mounted for oscillation about its longiindinal axis and having a roeking movement toward and from the platen. ai: elel'tro-magnet at eaeh side of the vpewriter controlled by 'the kers tor turiiiim; `said typeafarrying member about its vert ieal axis wherebyY to position one of the eharzntere thereon in printing relation with the platen, a toothed gear for turning said typeearrying member, aetuating means between said gear and the armature ot' eaeh magnet and eonneetions inelniled in said aetuaing means operative to permit the aetuating means at one side to remain stationarv when the other is moved l 14. Tn an electricy tlviiewriter. `the rombinationwith a pieten and a keylioard of a Shaft mounted to oseillate about its longilll() lll) tudinal axis through an aro of less than 18dD and havingr also arocking movement toward and from the platena segmental typo plate rarriod upon said Shaft and movable tlnrowli'ln elet'troinagnets for turning Said Shaft. whereby to posit-ion a type character on the plate in printinpY relation with the platen said elertromagnets being energized by the duproasion'of ar key on the keyboard, a serios of stop pin` each connected with key aiirlnrrangrd in an arc and profiel-tabla upon the dnpression of a key, and a single arm lixi-d npon said Shaft and normally disposi-l in the renter of said arcuately arrangjvd ,-'top pim)` for Contant with tl'a projorli-d ont` n'iIGrOby to t'ontrol tbe extefnl of turning; morvment ot' said shaft.

ln an ulortrir typewriter, the Combination with a platen and a keyboard, of a type-carrying member mounted to oseillate about itt-1 longitudinal axis. and having a rofkingf motion toward and from the platrin electrical moana` Controlled by ,the kry@ for oavillating; the typo-Carrying member to eti-srt a positioning' of ther type char- :irrers tliareon. and Qlevtrioal moans controlled diri-ctly by the position of the typerarrying: membvr for rorlcingr the latter` vilain-by to print the positioned rharaoter.

i6( ln an electric 'typowritnr` the rombinunon n" "o a platen and a keyboard, of a typo-rar ing inrmber monntud to ost-,illato about it.- longitndinal :Lais and having a rotating motion toward and from the platen. :doctrinal means; controlled by the l: for Srillating the type-carrying inemln-r to effort a positioning of the type charae-terf-f t'neroon. and electrical moans oontrolled direitly by the position of the typeworrying member for rocking: the latter, wlierfaby to print the positioned rlaararter1 S nl lan-t-namrd mean-z brim: eifel-,tive aligbliy in advance of tho romplotion of tbn {1n-ning movement of tho type-carrying membri:

In :in nlvrtrio typewriter. the 'ombination with a platen and n. keyboard. oi' a tyiihnairyiiigf momber monnted to oarillatn alu-nt il` longitudinal axia and having a motion toward and from the rlrrtrioal means vontrollvd by the t or o.- cillatin; r the type-rarryinnr mom- -r to eline-t a position of tln type Charllnrvon, elm-tribal moans nontrollod by tho position of the t \'|n-i-arryiin-r for rovkinn' tho lzillir. wlmi-olly )i iink po-iionoil vhararlvr. said lzwtnml moans boing elli-tivo Slightly in adit nunointo bordant' with rentrol f-aid nliiolwr and in- 18. In a typewriter`y the combination of a platen and'key board of a Side-wiso oscillating and fore and aft rocking type-shaft; a segmental type-plate carried thereby, electrical means controlled by the keys for oscillating the typo-shaft to effect a positioning of the type characters on the plate and electrical means controlled by tho positioningr of the type-plato `for rot-king the type-Shaft to print the positioned charafter`r said last means being effective slightly in advance of the complete positionin of the type-characters.

19. n a typowritor, tho combination of a platen and key board of ay sido-wise oscillating and fore and aft rocking typo-shaft; a segmental type-plate carried thereby, eloetrital means controlled by the keys for (Manilla-tingr the type-shaft to eifel-t a positioning of the typt` characters on the plate and elvrtriral means controlled by tho positioning;r of the tyqio-plateJ for rorking thu typo-shaft to print the positioned choral-tor, said lar-t meanbeing effec-tive slightly in advance ot' the romplute positioning of the type-CbarartvrS, and a mentoring device adjarent the type segment to complot@ the po- Sitioning of the type characters.

20. ln a typewriter, tho i-,oinbination of a platen and. keyboard of a sido-wise oscillating' and fore and aft rocking type-shaft, a` segmental typo plate on `aaid Shaft to ooact with tho platen, dentro-magnets at either side offthe typo-shaft for oscillating the same, whereby to position the characters on thel segmrntrl white with relation to the platoxn Said magnets being controlled by the, koys on the keyboard; a Contact arm rarried by tho type-allait` arenately spaced stop pins over which vtho vontact arm travels, oai-l1 of l@aid pins being operal'llo by a key to move into rontaiting position with tho arm`v and electro-1n:ignoto havingr their rirruit-l closed by iaaid arm and pins to rot-k Imid `ahal't and print the positioned typenlniraeter.

2l. ln a typewriter, tho oon'ibination ol" a platen and koylmard of a side-wiso osrillatinglr and fore and aftnr rofking tylw-f-ihat't, a. iwgniolital typo plato on said shaft to uoaet with the platen, dentro-magnets at either ywide ol" tho typo Sbaftfor oscillating-tho same, wherol'iy to position tho char- :n'tvrs on tho segmental plate with relation to the plalvn, said magna-ts being rontrollrd by the keys on the keyboard; a rontac't arm 'arried by tho iype-sllaii't, ari'nately spat'ed stop pins over whirl] the rontart arm trawl-s. carb of said pins being operable by a. kry to more into ronliarting position with (hn arm7 and eleotr11-magnets havin;r their rirvnil-` vlosod by said arm and pini-i to rook said liar and print tho pooitionod type-(liarA artnl; l aid pino` bring positioned with rvspl-rt lo thv vharantewI on tho segmental platen, eleetromagnets A late to effect a premature Contact with the arm.

In a typewriter. the eoinbiiiation with ii frame hi'i'vli'ng a platen and a keyboard` of a fore and aft roeking frame pivoted on the stationary trame.' aiioseillating sliat't jonrnaled vertieally in said rocking type segment on said shaft to i-oaet with the on the stationary frame eontrolled by the keys in said keyboard to oseillate said shaft in either direction, meehanieal means eontrolled by said keys to limit the extent of oseillating movenient of the shaft. whereby to position the rhaiaeters on the type segment in printing relation with the platen and an eleetromagnet on the stationary frame. having its eir enit elosed l said means. whereby to roek said traine and print the positioned type eharaeter.

n a typewriter. the eombination with a trame having a platen and a keyboard. of a fore and at't roeking trame pivoted on the stationa ry trame: an osqillating shaft jonrnaled vertieally in said roi-king t'rame7 a ty shaft to eoaet with the platen. eleetroinagnets on tie stationary frame at either side ot` the shaft ronti'olled by the keys in said keyboard. operating means between eaeh oi' said magnets and the shaft. eomprising a lever eonneetedjto the armature; a toothed segment earrierl on the stationary trame: a pinion on the shaft; meshing with said segment a'nd a roeking Veonneetion between eaeli lever and the segment. whereby to oseillate the Shaftin either direetion dependingnpon the eleetio-mag net operated. an: means aetiiated by said keys to limit the roeking movement of the shaft.

24. ln a tyiiewriter, the rombination with a. tationaiv trame having a platen and a keyboard. of a fore and att roeking. sidewise oseillating type shaft. a type segment on the shaft to eoaet with the means tor oseillating the shat't an eleetro-magnet at either 'side of shaft, a lever on the net. z toothed segment earried on the stationary frame. a. pinion on the shaft to mesh with said segment. a sha )ed link pivoted to eaeh of said levers and i eonneetion with means operated by the keys eireiiit. through said magnets for closing the and limiting;`

'the oseillating movement oi` the shaft.

25. ln a typewriter, the eombination with a stationary frame having a platen and a i'raine, a

platen. and

keyboard, ot' a fore and aft roi-king, sidewise oseillating type shaft. atype segment on the shaft to eoart with the platen, means for oseillating the shaft eoniprising an eleetro-magnet at either side ot the type shaft. a leveron the arniature ot eaeh niagnet. a toothed segment earried on the stationary frame. a pinionon the shaft to mesh with said segment. a Yshaped link pivoted to eaeh of said levers and having a sliding eonneetion with the toothed segment, means operated by the keys t'or closing the circuit through said magnets and limiting the o seillatiiig movement ot' the shaft and a resilient noiseless eentering block for said Y-shaped link.

2o'. In a typewriter, the combination With a platen and a keyboard.` of a fore and aft rocking. sidewise oscillating type shaft, a type segment to eoaet with the platen, eleetro-niagnets at either side for oseillating said type-shaft and means operated by the keys on the keyboard to close the eirenit lthrough said magnets. said means comprising a swinging bail at either side of the renter of the keyboard, movable by the adjacent keys. and a pair ot' contact inemberst'or each set o magnets adjaeent eaeh of the hails, one ot' said Contact ing movable by the bail to close the eirenit. n a typewriter. the combination with a platen and t'ore and aft roeking. sideivise oseillating type shaft, a to eoaet with the platen. eleetro-magnets at either side for oseillating said type-shaft and means operated by the keys on the keyboard to elose the eli-enit through said magnets. said means eoniprising a swinging bail at either side of the renter ot' the kevboard. movable by the adjaeent keys. and a pair of eontaet members for eaeh set of magnets adjaeent eaeh of the bails. one Vof said pawl and ratchet bail and movable i ie fore and aft roi-king movement ot' the type shaft to release said pawl and allow the movable eontaet member to return independently.

In testimony whereotI I have liereiinti`i\set my hand in the presenee of two siihseribing witnesses.

GEORGE C. CLARK. Witnesses:

C. W. F. M.

Winnen; M A UX.

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