US1083076A - Type-writing machine. - Google Patents

Description

0. FISCHER. vTYPE WRITING MACHINE. APPLIUATION FILED Arme, 1910.

Patented Deo. 30,1913

www@ 4 SHEETS-SHEET l.

0. FISCHER.

TYPE WRITING MACHINE.

APPLlGATION FILED APR.26, 1910y O. FISCHER. TYPE WRITING MACHINE.

APPLICATION FILED APR.26, 1910.

Patented Dec. 30, 1913.

4 SHEETS-SHEET 8.

Sax

QM M ozkmrw bam/L' O. FISCHER.

TYPE WRITING MACHINE. APPLICATION FILED Amma, 1910.

Patented 1386.30, 1913.

4. SHEETS-SHEET 4.

@Slbl FSOHER, F BEE/"LIN, GERMANY Specication 0f Letters Patent.

Applicaoxl filed April 26, 1913. Serial No. 55?,700

To all whom, t may com-em Re it knewn that L @exim `E "m;1rmz, a subject of the King of Prussia, and resident of Sehnebelgf, Berln, Grermmj@ WhOSe p05b0fee m'idlee. is Berln VW. EU? Bm'bw reasust'afe m11) have Time/med em'izu new A nii useful; uprovemgens `in Typ., YFilting; me-limes; and 'E do hereby deeme the folfm-wing to be a SML Clear, and em "d; deim tima. of the invention, such "n l ea'xzabe mI L) others skit-e1 .in bhe. :ut to which it Appeltens to make and use the seme.

My mventmm relates: t0 lmpmvemem 1n typeweltmg machufxes, and more lmeum'l'y to that chiusi; of typewting n'mehnee. m

which the types are disposed (m n. isf, e wheel w'uelr wy "ri Lime' a key 1s ils tln'ned about iis engitm'na ms so as te ble; the type v@curves-g;undEug; te the depressse kefy in u ee i eumhy pointed. out in the wir Fm' the, psll'pmse fr? expanngg Vile, inven MOU :im mammie embmlyingg'; the sga'mle has been ehe-wu in Une uceompRelying d uwngs, in which the. mme eels :if reference have been need in H the views bi; ufe-Ae: @m-e Spending paa.

Cenneeton with the type Whee, Fig. 5, a 'verh a1 longlliudina section of the segment through whlch rotation 1S imparted 1.0 the 'type Wheel, Fig. G, is a pzm of the said seg www J LE.

ment, L is a verticu Cross-section of the segwent taken on the line .fr-liti of Fig. 6, fg, f3, a horizontal seei'en f n met e1 the umehne mixen on 1. line fw-'SU el? L Fig. 9 .is a diag 'um the eleetrieal Circuits.

Rei'erying' if tine examp'e of fi'e invent-i011 llufsi'ned in the d'awngf' the Operative parte o my lfnpruved type-Editing; machine are mounted un n 'frame Wheh 0?,.msi1si5s of side, Une/nme: l, 2, :1, from' membex 2N may member 3, :L horzmlln hama pme 1,-. am 11mm? top pate, 5, and n, 'lower mp pulite h'enee m from ,of the plaie To vthe 'ton pluie :Ti suitable Slide bars '7 und 8 ae Secuer which provide -a suppet 'for "1 viering@ (not shown) of the plneu (L A wamabe type Whee Q is seemed To n, s; :Wsiaiy' perv pendculm I'Otlry sml l n'ieo le Wheel be l, Mld wie pestimi'ng; the es rle i'fx'mw.' Elie Huch luusif 1v derwd will@ epe/mi n if; immned on :1 teckel* p Genies the meemmsm :fuir o e dag' type "WM-:e1 ziggmm mening md with longitudinal slots 23 engaged by pins 24 rising from the plate '4Q and providing suitable guides for the said levers.

At the rear of'each key lever aperpendicular pillar 25 rises from the base plate 4, andin a slot formed at the upperend of the said pillar a substantially horizontal rocking lever 26 is mounted on a pivot pin 10.

The said lever is connected with the coplas erating key lever 15 by a push rod 27. With its lower end the latter engages in a socket 28 of a block 28 secured to the key/lever. At its upper end it is formed with an enlarged portion 27.which bears below the rocking lever 26,v and with 4a pin 29 which extends through an outwardly flaring hole of the rocking lever 26. A spring SO-tends to pull the front end of the lever 26 downward, so that the push rod. 27 is in engagement with the block 2S a's well as with the lever 26. At its rear end fthe lever ,26 carries a bell crank lever 32, 33. By a spring 34 engaging under a nose 32 the downwardly extending arm 32 is 'normally pressed' forward and in engagement with 'a shoulder 31 formed ona rocker 35. It will beA understood that for each key lever a push rod 27, rocking lever 26, bell crank lever 32, 33, and rocker 35 are provided. All the rockers 35 are mounted on a substantially semicircular plate 36 which rises from the `base plate 4 and which is formed at -its upper marginwith a plurality of slots'36 the number of which corresponds to the number of the rockers 35. The latlter arey formed with vslits 35 q.whereby they are pivoted on a lsemicircular .wire 46 ex-' springs 38 attached to forward extensions 47 of the rockers and holding the latter in contact with a flange 37. At their rear ends the rockers are formed with notches 39 which permit the same Vto be rocked upward relatively to the arms 32 when the latter are released from their shoulders 31, as will be described hereinafter. Each of the rockers 35 has a flat spring 40 0r 41 secured thereto which extends downward and'with its lower end at the rear of a contact pin 42 or 43 screwed into an insulating sleeve 44 lo- ,their sleeves by means of their screw threads and they are provided with locking nuts 45. As shown, the Contact pins are arranged in two groups one above the other and all the contact pins of each group are electrically connected with one another.

To the base plate 4 two perpendicular pillars 50 (Figs. land 3') are secured which are rounded at their upper ends and provided with pins 51. The said pillars. pro- Y vide a pivotal support for the rocker plate 14 and rthe lpins 51 extend through outwardly Haring holes of the said rocker plate. To the front end of therocker plate two springs 52 are connected which at their lower ends are attached to the baseplate 4, and which tendto hold the rear end of the rockerplate upward and away from the core 19 of the electromagnet 19. Outside'the,

pins 51 a pair o'f pillars 63 are secured to the rocker plate 14 which extend upward therefrom and are bridged atftheir upper ends by a crossl plate 54. The said cross plate provides an upper guidevfor the shaft 13 of the'ty'pe wheel which at its lower end is guided in a bore of the rocker' plate 14. As shown in Fig. 3 the shaft 13 of the type -wheel is mounted on the rocker plate 14 as its upper end t-he slide pin 58 is provided with a transverse pin 63 which projects laterally through longitudinal slots 62 of the sleeve 56 and provides a means to shift the type wheel. so as to bring either one of its rows of types in front of the printing point, as will be explained hereinafter. The

pin 5S is further formed with a longitudinal bore 64, which, provides a guide and a support for the lower end of the type wheel shaft 13. Above the rocker plate 14 the shaft 13 is guided in a sleeve 70, in which it is longitudinally slidable, while it takes part in the rotary movement of the same. lVithin the latter a coiled spring 71 vis inclosed which with its lower end bears against a collar 72'formed on the shaft 13 and, with its upper end against a screw plug 73 screwed into the sleeve 70. The said spring has a tendency to force the shaftt and 101 projeeiiig latersitv the same (Figs. and 6), and the seid gear teeth are in mesh with corresponding teeth of ay segmentff'tl having e pivotal support in s bracketl 'T9 secured to the rocker plate 11. lli'ear the tulerum of the segment 78 a pivot piu 80 extends downward and to the said pivot piu two links 81 und 82 are 'iointed which extend laterally to both sides of the machine and are jointed at their tree ends to armatures 83 and of the electromaguets 17 and 18. The said arh'iaturee have a rocking' supportoii pillars i355 and 86 r speetivelywvhieh rise troiii the hase plate .For this purpose the .said pillars are provided with horizontal studs and. 238 which eag in outwardly tiarii .j hores and 90 oit' the armatures. Sprir 91. and 92 tend to pull the amatures away from their elec troii'iagnets. llt however one oft the said i electromao'uets is ehereized, :is Awill he ezt plaiued hereiimtter, the corresponding armature is attracted and therehy the toothed seg'iiii'fut T8 is rocked., end such rook ingr movement. is transmit d tlirough the pinion 7T and the sleeve 7l) to l"he shaft 1,3 ot the typo wheel, unt-il tli'eatte.,is arrested ih the posit-ieri iii which the proper type is in, trout ot the ioriiitiugpqV point.

there the pivot 30 e hloeh 95 is secured to the upper side o1 the reeriardlii-extend ing arm ont they segment 78, and the said block is formed with e notched upper tace the side faces ot' `the said notch heiugY in eliued downward and toward the center of the block. it a point above the pinion 77 a trzftiisierseplate Elt is secured to the pillars 53 and to the saidialate a flat spring* 97 is scoured which eX cuds rearward therefrom and to a, point hear the block 95. 1t its rear end and shove the bloei; 95 the seid tiet shrint is provided with roller which' runs ou the inclined upper tace ot the hloel: thi. ilorii'udly the seid roller outrages the ioirei'most or Central hert oft the iioteh o1 the hlo'ch'. 'ft-hit 'tithe-ii the segment has heee` rocked it rides uo one ot the 'inclined side feces, arid it, tends to return, the segg-l mer-.t .into .its iioriiml positie-1".

Ait a poi it below the pinion Tl" ai stop ,rra-einher li gs 3 aud S) is secured to the sleeve i0 which zo'iisists o 'jtwo arms 100 of the said sleeve toViard the .Mies et' the marittime. it their outer ends the seid arms are .termed with shoulders Q and 1103 which project downward from the seid arms. Upon rotation ot' the sleeve 70 the said shoulders are4 adapted to strike against. the :tear oud et the rocker which has heee depressed into the 'path of the said shoulders hy depressing a hey. The sleeve '70 constitutes a holow rock-shaft 'while th arms 100 and oehererms proie daeretroizr At? points oear the ril-fir wird ot" tl ehirio two pillars Allt) tl il t t .l (il are i 111 extfiii'u'l ui i' we); wiiiiertioii is tit Ward from the base plate 1 from -which arms 112 and 113 project forward. At` their trout ends the said arms ere equipped with pivot pins 114C which are screwed through ioles of the said arms and are formed with conical points. The said pivot piuscan. he adjusted Within their holes find locked iu ad` justed position hy means of locking nuts 109. The conical ends of the pins provide a pivot for a frame which consists of a U- shaped har 116 which at its front end ishent into a` semicircular how and has its .rear ends hridged'l'iy a transverse plate 117. The curved trout part of the seid treme is disposed adjacent `to and helow the rearwmlly extending argus S3 of the hell craiit. ieveis 3Q, and it provides a means to disconnect the hey levers trom the type Wheel operating i'iieehaiiisiiigas will he explained herein! after. rEhe transverse plete 11T is loi'uied with aeeiitrel here through which a rod 11S extends. he seid rod also extends through abore termed at the rear end ot the rocker plate, and further throughjo here et the hase plete. rlthelv it'i'liiction ot the rod, is to transmit the rocking movement o't the rocher plate 111 to the. plateiriteed escapomeiit mechanism 9 and to the trahie 11G1 117. For this purpose collars 1520 and 121. are secured thereto :there md below the rocker plate und at a suitable distance trom each other and two collars 19.2 and are secured thereto ahove aud below the transverse plate 117'. At. its lower eed the rod 11S is jointed to a rocking lever 130 which is pirotslly suigiported on e bracket 131 depending from the hase plate -l-. Atits t 'ont eed the said rocking;l lever 'is jointed to the rear end of :i rocking; lever 1352 which is pivotally supported on a hraehet 133, e id which is conN "uected hy a .link 134i to ai space hey level 135. The letti' is pivoted oh ii` pillar 13G rising;

'from the hase white fir,

tirom the l of the lever 100, '101 a stud 140 'projects rearward which provides au abutment :tor securing au exact adjustment tor t'ie type 'Wheel 'W ien the latter turned haehivard into its normal igiositioh. The said stud ooperates with a pair ot parvis or rocking levers 111 and pivotallj,7 mounted oh the armatures 83 :uid 8st respectirely. Springs 1st?, and l-lft here the teudenoja to hold the said .levers iii their normal or looking positions.

Atthevrear oil3 the li'iaehiue two contacts 150 and 151 are provided which are adapted to he competed to a suitahle source ol electric energy. trieal connections are made :is lollovs: llroiu the cont: et 151 to the subsidiary elec tromagriiet 21, the typewvheelrotating elec- ;i'ouiiigfziiet 18? the lower series oit contacts 43. the spring contacts 11, thtA machine 'frame und liaelrivto the commet 15th 'u :i siluihir made from the contactI l'lrom the said contacts elec against the platen is mounted on a plate 160 secured to the base plate by means of suitable rods 161. At the rear of the electromagnet a pillar 162 is provided which provides, a stop for the rocking 'movement of the rocker plate 14. The electromagnet 19 is energized by means of a circuit which is normally broken at the contacts 163 and 1'64, and which is closed by energizing either one of the subsidiary electromagnets 2O or 21.

The latter are mounted on the hase plate 4.

Their armatures 171 and 172 are provided with contact levers 173 and 174. If now by depressing a key, either one of the subsidiary electromagnets 20 or 21 is energized as has been described above, the circuit o the electromagnet 19 is closed at the correspending contact 163 or 164. Thereby current is supplied to the electromagnet 19 as follows: from the contact 150 over the machine frame to the contact level' 173 (or 174), the contact 163 (or 164), the electromagnet 19, andfthe contact 151.l The electrical circuitsand connections; are shown diagr'ammatically in- Fig. 9. -By thus energizing the electromagnet 19 the rocker plate 14 is attracted and the type wheel12 thrown against the printingpoint.

The operationof lthe machine is as follows; lf a key is depressed,`th e corresponding rocker 35 is moved downward through the intermediary of the key' lever 15, the

push rod 27, the rocking lever 26, and the depending arm 32. Thereby instrumentalities for positioning: the rotary typecarrying member 12 to' bring the desired character into position for printing are brought intoaction and the rear end ofthe rocker is shifted into the path of the lever 100, 101 secured to the sleeve 70 of the type Furthermore the correspondor 41 is pressed wheel shaft. ing spring contact 40 against its- contact 42 or 43 of the-upper or lower series of contacts. -v Thereby either one of the type-wheel-rotatmg electromagnets-17 or 18 is energized, and the correspending armature 83 or 84 is attracted. The said armature rocks the 'segment 7S by means of the link 81 or 82 either to the right or left, and such rocking movement Yis transmitted .tothe sleeve 70, so that the lat ter and the type wheel connected therewith are rotated either to the right'or to the left. Such rotary movement is possible,hecause by the rocking movementl of the armature 83 or 84 the lever v'141 or 142 has been rocked out of the path of the stud 140 secured to the sleeve of the-'type wheel shaft 13.'

The rotary movement offthe type Wheel shaft is arrested by one of the arms of the lever 100, 101, which comes in contact with the rocker 35 whichchas been depressed by the key. From this it follows that the rockers 35 are and constitute instrument-alities which limit the oscillating movement of the type-carrying` member 12; and, since through the leaf-springs 40, 41,carried by them, they control the electrical circuit of the printing-controlling magnet 19 (as hereinafter explained) and inasmuch as they are through the' bell-crank levers 32, 33, each normally connected with the keycontrolled mechanism (the rocking lever 26, push-rod 27 andr key-lever 15), they may be properly said to be instrumentalities which control the printing-controlling magnet 19 and are normally connectedv with said keycontrol'led mechanismand actuated thereby. It will be observed, that by using a stop member 100, 101 having two arms and rotating -the sleeve 7 0' either to the right or left, the type wheel is turned over an angle of not more than 180 degrees to the right or to the left. Thereby itis positioned accoi-ding to the key struck within a very short time. lfilhile the type wheel is thus being positioned, the subsidiary lelectromagnet 20 or 21 is energized and either one `of the contacts 163 or 164 is closed, so that current ssupplied to the printing or imression-controlling electromagnet 19. Thereby the rocker plate 14 is attracted and the typewheel thrown against the platen. By using the subsidiary electromagnets 2O or 21 for energizing the electromagnet 19,v

some time elapses, asis necessary for rotating the typewheel before throwing the same against the platen. By the rocking movement of the rocker plate 14 the frame 116, 117 is rocked by the. rod 11S and the escapemint mechanism is actuated, s0 that the carriL ge is shifted one space. By the rocking movement of the fra-me 116, 117 the crank lever 32, 33 is rocked away from the shoulder 31 of the rocker 35, so that the latter is Afree to move'into its upper or inoperative position under the influence of its spring 3S. y An important feature of the invention consists in the manner in which the connection between the type wheel operating mechanism and the key levers is broken. 1n order to permit of a rapid operation of the machine, I deem it advisable, that the stroke of the type wheel whereby it is thrown against the platen he as small as possible. because a large stroke would requireconsidcrable time. However, in order to be able to throw the type wheel against the platen with sufficient force as tc produce meent/e io seid mechanisme be effected bef-oie the type ,moei eufikee against the pieten, bot Whi fee eiee rie eireui; is not )feisbroken. Lihue mede '1' ,;-il e by he spring' eo imei@ fief) sind il. jm 'l'ilsg'ieetion of l Wiii. Show, Limi by' le ioeii'irlo' movement of the iflome 11G, fili the heil eximir ever i591 of the key wiuoh 1n ezleii opelotiorl .has beenv eniwfueie rocked, :md ziiefeby the-Seid difseou'oeedjoll ei otoei. This disconnection is .mode :1L suitable time iioforo the type 'whee Strikes fiojziinrffzi the pinten. Bui; While the i'ooker *"i being; roeioe into iris upper or i'ioji'iemtiwe posiizioo1 the spring; com; t or L-i Wil sii be heid in one( gel'oent with its minimi ma before linie; ennemi. ]f"i'| ;=,1eiore, .v'iiilo the lie-.cmmotion, of the ome Wheel mechanism :imi the key lever meehoniein is eii'eeteei in e i'eliz'lliie wei/f, yet 'the 'force Lfo. iniuowiugg the type 'Wheel against ehe pieten leso; ione' enol'lg'li to ineure o goed impression. t will be understood that the eamo efee; muy be obtained by other means. For exemple the Cores of the eleetl'onmgnets Q0, 2l may' be so eonsm'eeted to have some emonenee or residua] imegznetiem7 so that their ormaturee :we ooi inemulmieousiy released, ami the cireui of the priming eieetl'omegnot 1 9 broken.

From the foregoing description, it is ob viens that each rocker 35 is in e'eet o make" mid-break device or e (circuit-'bmaking device Whieh is eontroile by the U-simped/ lover 1169 which le'vel in tum is controlled by the printing-eonh'oiling megi'iet l; omi ne will oe owious from what has been Seid in the foregoing, the-rocker 35 is controlled by the lli-shaped fieve: 116 in euch e wey to ineifmp the circuit independently of the return movement of he key. Viilen the remi end of he rmfker is. Lhown down by bhe key-minimose'i zmxehmiiem (the )over E56, poeiwrod el '1.59 Whiei'i 'it ie comme lufougii ihe bei-e`v-ooo 35E? the oirooii: fe elo@ i o? mofzi mici he weer euri of the roe, fifi ie im: vos-:eil in Hze gieh of the of;iter-orme 00, ,loi for' Iimiiog (he oseiia'iingg lllwen'leut of the 'yfiowvii e] to bi'iiog iziio doeied character into printing; position.

the

Mie type Wieei o pluie 5f.

Ae soon as in *ihe exompie shown the een @niet spring #i0 or el hoe been retracted from reiezvise their o'lnimtlzi'es so imt elle type Whoo is ototed. into ite normal ijaoeion by spring 9T engaging on the inclined feces. of the biook Q5, iu which position it is er i'esiied by the spring;- iover 14;. or "When wives in ite oormo positioo, ti1o oimotm'e fl; or 81.5% has of eoui'se been eeo i ond rommd ixa'io ne nomno po- 1on1, and miao the ioeiiiofg" ieve ifi-loi heb been bym ht into iiisno'mni position. Howevei, the seid oeiiinoj ievoi" will not we feint the 'hype 1 ii, from :owing into ile normali pos-ioion, beezmse ii; j 'dds-'ino the eind MG tjJ keine: spring :wit-noted emi pivomiiy.eipported ou the mmetm'e oi'- 8%. The roekoi 'plaie lewill 'be i'eeeeed by iis eieeii'onmpoet 1 and iw'mc'efi into ie om me! posiilo its sprl. k 1 it will be oindeletood boot di ibo opemiiooe are pen 'fain-med Whether the kof.; hee been ileieoe'ed or loot, emi. hnl, e second key om be strook wiiiiml'li; ivei releasing; the key which iles fafe; eeen depreesevfi.

As ssii( on, in "the dzmfif Uwe, ai am: shy

-r we piovided. have e seeking Supp. meii 'elle lower :Eme of ioe buse Ai their wsem ends; lle ieveye fiore jointed fo ')eivpemiiouim? links lTT, which 'wigh iieiaf :www fome we iu looee eugzie'emeet with Lilo me 'fitting' enfle o- J' me u of the pio 623 theirA le e guide piete 179 im .fj'he iin-iis '1i/'7 and M8.,l mui the latter :o1uzapifessed in engegezoeni, with the said pine ley springe 180. vThe shift key levers 357 have different ronge of mmfment, sohbet. they viii eievaie the type Wheel wi'x either one o... is owex rows oi types 'in 'freeof ghe priming point.

Novel means have been provided 'to enable the operator to 'speediiy remove his type pin G3. A11 the re i Wheel from the shaft and 13o pui; thereon :mf

other one which may be provided with types o' e dlfel'eut oheaeieir. if shown such nie-.ms me constructed. ne 'olowe: Neoi'- its upper end the shaft 1.3 is formed Wdl o, oolim' lilo whleh provides e Jutobfie support for 4die type wheel. `fbove the e o pair oi? Spring arms 126 31 emfi 13 which 'tend to @hifi the ewey 'fiom its seat oto. the 'oo 1%. iis Moyer end the shaft lf3 eoifies e; pivotal com ii?? whim in the position shown in Fig. ine-mz? 'o i, nose 128 on. the .inrit-pei. :foce me imno wheel und presses rile same 5d and in commet with Zehe Colim- 3" .i Nie Smid. com rocked ite nose is eiifmiioi mio uiie Siot, of the Shaft, eo the@ 'he wheel can be removed from its shaft. 'ifo prevent reunion sind infiere exact ed- Los oom-oet oi' i3 ali 'the eieetromognesl justment of the type wheel on its-shaft a pin 129 is provided on the collar which engages in a corresponding bore of the type wheel.

i Novel means are rovided to actuate the ribbon spoolmechanism and thereby to control the feed of the ribbon." As shown in Fig. 1, the ribbon spool is mounted on a spindle 145 guided in a suitable sleeve 146 rising from the upper top plate 5 of the malchine. Near its lower end a Worm gear 147 Vdesired character thereon into printing position; means for actuating said member to produce the printing stroke thereof; automatic means for causing the return of said member to its initial position after the impression hasy been made; a manually-operated device under control of the operator for controlling the rst-named means; and automatically-operating mechanism for disconnecting the latter from said device a substantialinterval of time before the end of the print-ing stroke of said type-carrying l member.

2. A typewriting machine comprising a rotary type-carrying member; instrumentalities foi` positioningthe same to bring the desired character thereon into printing position; means for actuating said member to produce the printing stroke thereof; automatic means for causing the ret-urn of 'said member to its initial position after the printing stroke has been made; a manually-operated device under control of the operator for controlling the first-named means; automatically-operating mechanism `for disconnecting the latter from said device a substantial interval of time before `the end of the printing stroke of said type-carrying member; and a connecting device which joins the first-named means and said mecha.- nism together.

3. In a typewriting machine, the combi-' nation with a type-wheel, means to rotate the same, means to throw the same against the platen, and an operating member for said rotating and throwing means, of means operative upon the actuation of said throwing means asubstantial interval of time in advance of le type wheel striking the platen to disconnect said operating member from the rotating and throwing means, and

the same; means to throw the same against the platen; and an operating member for said rotating and throwing means; of means Aoperative upon the actuation of said throwing means and a substantial interval of time in advance of the type-wheel striking the platen to disconnect said operating member from said rotating and throwingvmeans and to make said throwingv means thereafter inoperative by said operating member and automatic means to ret-urn said type-wheel to its initial position.

5. In a typewriting machine, the combination with a type wheel, electric means to rotate the same, electric means to throw the same against the platen, and a key-controlled operating member for said rotating and throwing means, of means operative upon the actuation of said throwing means to disconnect said operating member from the rotating and throwing means, and automatic means to return said type wheel into its normal position.

6. In a typewriting machine, the combination with a type-wheel; electric means to rotate the same; electric means to throw the same against the platen; and an operating memberi for said rotating and throwing means; of means operative upon the actuation of said throwing means and a substantial interval of time in advance of the typewheel striking the platen to disconnect said operating member from said rotating and throwing means and to make said throwing moans thereafter inoperative by said operating member; and automatic means to return said type-wheel to its initial position.

7. In a type writing machine, the combination witha typeivheel, of electric means to rotate the same, means to throw the saine against the platen, means to actuate said throwing means, an electric circuit including said electric rotating means, a Contact and a spring arm rcoperating with each other and included in the said circuit, a rocker-providing a stop for limiting the rotary movement of said type wheel and carrying said spring arm, a key-controlled op- Jerating member for said rocker and the spring arm carried thereby, means operative upon the actuation of said throwing means to disconnect said operating mcmber and rocker, automatic means to return said type wheel into its normal position, and automatic means to move said rocker and spring arm into normal position, said spring arm remaining in circuitclosing position until after the roc-ker and its operating member have been disconnected. v

' 8. In a type writing machine; the comb"- nation with a type wheehof electric means Leeeme limiting; the rmzu'y iilovement of' sriiiltype Wheel and cm'rjfillg smid spring; arm7 :L key controlled eperzing :xml the spring' arm married Hier-elif', ineens operative upon the ing means to disconnect; Smid operating; mehr ber and rocker, mi'mmitie mezme te return Said type Wl eel inte ite normal pneition, and

autmiielie nieuwe if; more will rocker :mil Spring; erm im@ ixmrml poen um, simi' Spring);

melxiber have l en vliscmmeem.

Sl. A liypewriiiug' machine mililil-risinfV :14

type-Cnfrying mcfirilm 5 menne .lier fieimng llie Crime 'ite produce lille priming; sril flier-wif; mzlonmlff mesme for alusingfi fem'ii nl seid r nlier i0 its inl l :llfl'er ille prliiinte* fa'mke ljlle'efl .3f-wml rol lfrf'l if" memellmes wliirli limil` said Leuber nel (-mirul in? 11ML lim; been emu means, mal which :1re Marinelli' Gemmell-il 'mth smc li'eyemiljrelled meel.L 'n

i 1i siriani 1 e'miial interval Qtime before the end of the printing# slrolte if eeil lype-earrjfinl,y member. n

10.4421 typewriing iimcnlne com type-Wheel; a shaft .piin which zlie Same mounted; e spring' iii'lerpofed lsel'weeri Sfilifl iype-Wheel and Shaft and nmuiilelil lielow said lypeivheel, :nid spring; en ii1ig`tnptfsh the, zype-wlieel npwerflly along the Slieft: and al locking' (lr-)vire wliiell 'wally emp; e.,

mount-ed upon said slmfl; :rlme smid wipe-- Wheel and :ixlnugeil to be w'imgj in {walnugatimi (if mid slmiille perii'iit the removal m" Said type-Wheel.

ll., A ypewriirg'machine4 comprising n type-Wheel; a, shaft upon which `ldie seine mounted; L Spring jnlieiposed between Suid type-wheel and sli-all; sind mmmtefl below Said type-wheel, said Spring tending t'o pmli the type--wheel 'u'gjnwmly along' the and n, locking' device formed with :L eem .fmcl pivolizxlly mounted upon said shaft, elwwe seid -ypewheel and arranged lo be swung in prelengniifm of said shaft m permit lie remnml of said. typefwheei.

In n typewriting marhine the combinrion with zi type wheel, ellectriceilyoperated means to rotate the same, ineens to me'sl'iler for Seid .rocker nafion with :il t" immuun y peiling *lie :meinst fue plnem ef nimm plaireY :uid supporting eaifl mme in ie throw the same egiinsllg the operffituig mer-:ibex: :fior

13. In fi ypew'lii-ing iriuehine, bhe smilblnatimii, with a Vpe Wheel: menne to ro'lzite the szmca eleetriealjopemLed means 'le throw the seme aesinet *he plne :md mi oper ing* niii-nljleiier m'ml'i nml 'ihrem nie-mls, of meer Ll'f echi ation of Said ihm of the linie l connect Smal @pei-:lim 'Milling :1215i lilewir mesme if) rerum :mid nor-mei limsiten.

1 7 i@ :me roeier 'pluie Se zu; m l against the platen., el: s

www mln ype wheel. L :ne wheel es in freie? l l5. in ai, ypewriiing iiifielime., the. @muri-- nation 'will e vise wheel, e rw'lm f piel@ muy l 12S n wel; said v lzle lv Wheel (will.

im iwi-mel nmei'umf. ille combi- .rocker plate se :is to threw the y'pe Wheel sleeve mmirib mi angular notch und ecm'ed to seid seg mem, :md e spring nefimtwl member engaging in unid iieell anni lending to hold the mrnml pneiiiem 1T. flu n typewritiiig Inel'cliirw, the enmbinntimi with the platen, type wheel, :md menne to alix-ow he same aguinet. ilw pinten, nil? means i@ rotule mi@ type wiweL :mire mehr memes; *Le ieluu smid ilyg''e wheel inizi; is vorrrml wrsilime :rml :l locking' lever Japie@ le lie i'rmlaoff "mi mi .lm'li'ing fmSil'iim i}"'f eil r-i -f mmm am? in lw reim-ned m130 locking werden zum ille rele; e nl Suid rotating men-m1.

1 3. ln. e. type pletem amil en Said relating' and throwing mienne, of means; eperefive upon the actuation oil" raid ill-rowing ineens te disconnect Swirl operating iiienller :from he ro letting and throwing means, and ausmexc (me el? ile:

nation with a type-wheel; a` rock-shaft upon which the same is mounted and which is provided with a pair of rocker-arms; key-controiled devices arranged tobe thrown into thepath of said rocker-arms to limit the rotary movement of said type-wheel; and electromagnetic means which throw the lat- ;ter in either direct-ion to bring the desired character into printing position and which are controlled by said key-controlled devices.

' ing stroke of said type-carrying member.

20. An electric typewriter having a keycontrolled type-wheel; a platen; electromagnetically-actuated devices for rotating the type-wheel and-throwing the same againstthe platen to print the character; and meansV for causing the interruption of the magnetism-creating electric current a substantial. interval of time prior to the completion ot ,the printing stroke of the type-wheel.

' -21. An electric typewriter -having a key-- controlled type-wheel; a platen; mechanism for rotating said type-wheel; an electromagnet for actuating said mechanism; means for throwing the type-wheel against the platen to vprint theV character; an electromagnet for actuating said means; and means for initiating the breaking of the electrical circuits of said electromagnets" a substantial interval of time previous to the completion of the printing vmovement of the type-wheel.

An electric typewriter having a typewheel; a platen; electromagnetically-actuated devices for rotating the type-wheel and throwing the same against the platen; keycontrolled means for first closing the electric circuit ofsaid devices; and an electromagnetically-controlled device for freeing said 'devices from key-control to break said circuitindependently of the return movement of the key.`

Q3. An electric typewriter having a typewheel; a platen; electroinagnctically-actuated devices tor rotating the type-wheel and throwing the saine against the platen; keycontrolled mechanism; male-and-break devices detachably connected with the latter for controlling the flow of exciting current in thecircuit of said electromagneticallycontrolled devices; and adevice which breaks the connection between said key-controlled vmechanism and make-and-break devices before the completion of the printing stroke of the type-wheel and thereby interrupts said exciting current.

24. An electric typewriter having a keycontrolled typewheel;'a platen; mechanism for throwing the type-wheel against the latter to print the character; an electromagnet which controls said mechanism; means for rotating the type-wheel; and a second electromagnetwhich controls said means and the circuit through the first-named electromagnet.

25. An electric typewritencomprising a type-wheel; a platen; devices` for rotating the type-wheel; an electromagnet which actuates 'said devices; mechanism for throwingI the type-wheel against the platen to print the character;'a second electromagnet which actuates said mechanism; and a device for breaking the circuit through said electromagnets, said device being controlled by the second electromagnet.

26, An electric typewriter comprising a type-wheel; a platen; carriage-controlling means; devices for throwing the type-wheel against the platen t0 print the character; an electromagnet which controls said devices and means; mechanism for rotating the type-wheel; and a second electromagnet which actuates said rotating mechanismand controls the circuit of the rst-named electromagnet independently of said rotating mechanism.A

27. An electric typewriter comprising a type-wheel; a platen; ribbon-feed mechanism; devices for throwing the type-wheel against the platen to print the character; an electromagnet which actuates said devices and ribbon-feed mechanism; means for rotating the type-wheel; and a second electromagnet which controls said rotating means andthe circuit through the first-named electromagnet.

28. An electric typewriter comprising a type-wheel; a platen; carriage-controlling means; ribbon-feed mechanism; devices for throwing the type-wheel against the 'platen to print the character; an electromagnet which controls said devices; means and ribbon-feed mechanism; means for rotating the type-wheel; and la second` electromagnet which controls said rotating means and the circuit through the first-named electromagnet.

Q9. in electric typewriter comprising a type-wheel. ;a platen; mechanism for throwin;- ne type-wheel against the' platen to print the character; an elcrtromagnet which controls said mechanism; devices for rotating the type-wheel; and a pair of electroinagnets one o1 which is arranged to'actuate said devices to rotate the type-wheel in one direction and the other of which is arranged to actuate said devices to rotate the type- Wheel nl an opposite direction each of the last-named elcctromognets 4being arranged toeontrol the circuit through the first-named electromagnet independently of said type` wheel-rotating devices.

30. .rin electric typewriter comprising a type-wheel; means including a pair of lockin@I parvis for holding the saine in normal position; means for rotating' the type-Wheel; and a pair ci. electromagn'ets which actuatc said means and said pawls and which are arranged to swing the latter out of locking, position to permit the rotation of the type- Wheel.

3l. In an electric typewriter comprising keys, the combination with a rotary type- Wheel and a platen; of key-controlled typewheel-rotating electromagnets'; a printingcontrolling electromagnet; carriage-feedcontrolling mechanism; and automaticallyoperating," devices for interrupting the circuit through. said electromagnets independently of the return movement of the key; said mechanism and devices being controlled by said printing-controlling electromagnct.

32. In an electric typewriter comprising keys, the combination With a rotary typevvheel, and an inking ribbon; of key-controlled type-wheel-rotating electromagnets; a printing-controlling electromagnet; and ribbon i'eed controlling mechanism controlled by the latter.

33. .ln an electric typewriter comprising keys, the combination with a rotary type- Wheel and an inking ribbon; of key-controlled type-wheel-rotating electromagnets; a printing-controlling electromagnet; ribbon-feed-controgfling mechanism; and automatically-operating devices for interrupting the circuit through said electromagnets independently of the return movement of the key; said mechanism and devices being controlled by said printing-controlling electromagnet,

34.-. ln an electric typewriter comprising keys, the combination with a rotary type- Wheel and a platen; of key-controlled type- Wheel-rota'ting electromagnets; a printii controlling electromagnet; make-and-break devices in the circuit of said electroinagnets; carriag'e-ieedcontrolling` mechanism; and automaticaily-operating devices for actuating said make-and-break devices to interrupt the circuit through said electromagnels independently of the return movement ol' the key; said mechanism and means being controlled by said printing-controlling electromagnet.

35. in an electric typewriter con'iprising keys, the combination with a rotary typewheel and an 'inking ribbon; of key-controlled type-ivlicel-rotating 'electromagnetsg a printing-controlling electromagnet; ribboni'teed-controlling mechanism.; and automatically-operating devices for actuating said make-and-break devices for interrupting the circuit through said electromagnets independently of the return movement of the key; said mechanism and means being controlled by said printing-controlling electromagnets. i

3G. In an electric typewriter comprising,- keys, the combination with a rotary typeivheel, a platen and an inking ribbon; of key-coi'itrolled type-'Wheel-rotating electromagnets; a printingcontrolling, electromagnet; make-and-break devices interposed in the circuits of said electron'iagnets; devices for transmitting the Working movement of the keys to said make-and-break devices to close the circuit through said electromagnets; and automatically-operating devices for interrupting the circuit through said electromagnets independently of the return movement of the key; the last-named' devices being controlled by said lninting-contro-lling electromagnets.

8T. In an electric typewriter comprising keys, the combination With` a rotary typewheel having a shaft provided with arms, a platen and an inking, ribbon; of key-coutrolled type-ivheel-rotating" electromagnets; a printin0-controlling electromagnet; and make-and-li eak devices .interposed in the circuit ot' said electromagnets; said devices being arranged to cooperate with said. arms to limit the rotary motion ot said type-Wheel shaft.

38. ln an electric 'typewriter comprising keys, the combination With a rotary typeivhcel, a platen and an hiking-ribbon; ot' key-controlled typc-Wheel-rotating electromagncts; a printing-controllingr electromagnet.; circuit-breaking devices interposed in lthe circuit of said electromagnets; connectiup; devices which connect" said keys with said circuit-breaking devices; and automatically-operating devices for disconnectingr the keys :from said circuit-tweaking devices to permit the interruption oi the circuit independently of' the return movement of the key.

39. ln an electric typewriter comprising' keys, the combination With a rotary typeivhcel; oi key-controlled type-wheel-rotating electromagncts; a make-and-break device interposed in the circuit of said electromagnets: and mechanism controlled by the latter for controlling said make-and-breakdevice to interrupt the circuit of said electromagnets indcliei'idently of the return movement of the key. y

4-0'. In an electric typewriter, the combination with `a rotary type-Wheel; of a printing;- controllinp; electromagnet; a circuit-breaking device interposed in the circuit olf-said printingcontrolling magnet; and 4means' necting the armatures of said electromagnets with each other; a pinion upon the type-wheel shaft; and a toothed segment meshing with said pinion and connected with said linksY 42; In an electric typewriter the combination With a rotary type-wheel; of type- Wheel-rotating \electromagnets; a printingcontrolling electromagnetg' links connecting the armatures of said electromagnets with each other; a pinion upon-thltype-wheel shaft; atoothed segment in mesh with said pinion and connected with said links; and automatically-operating devices fr interrupting the circuit through said electromagnets independently of the return movement of the keys. f y

43. In an electric typewriter the combinaformedwith a lug; of type-wheei-rotating electromagnets; and pawis hinged to the armatures of said electromagnets; said lug being arranged to coperate with the free ends of said pawls to position said typewheel shaft. 1

44. In an electric typewriter they combination with a rotary type-wheel having a shaft formed with alug; of type-wheel-rotating electromagnets the armatures of which are connected with each other; a pinion mount ed-upon said shaft; a toothedlsegment which meshes with said pinion and is connected with the armatures of said eiectromagnets; and pawl's hinged to said armatures; said lug being arranged to coperate with the free ends of said pawls to position said type wheel shaft'.

In testimony-whereof I aiiix my signature, in presence of two witnesses.

OSKAR FISCHER.

Copies of this patent may he obtained tor ve cents each, by addressing the Commissioner of Patenti,

'Washington D. C. i

Images