US1610325A - Typewriting machine - Google Patents

Description

E. G. ROWLEY TYPEWRITING MACHINE Dec. 14'

5. 1923 2 Sheets-Sheet 1 Filed Oct.

Dec. 14 1926.

E. G. ROWLEY TYPEWRITING MACHINE 2 Sheets-Sheet 2 Filed 001:. 5. 1923 35 by'en'gagement with the under faces of the .vided a pair of links or rock-arms 24, one at 7 ing rock-shaft 27 ,which is encircledby, a

each side of the machine, and each provided with a stub shaft 25, on which rests a yoke 26 formed in the corresponding side piece 19 of the shift-frame; the links'24 being fast at their rear ends to a transversely=extendspring, not shown, so tensioned as to assist in lifting the shift-frame to uppercase.

For lifting the shift frame, there is provided, at one side of the keyboard, a shiftkey 29, fulcrumed on a short shaft30 on a standard 31 rising from a cross-tie 32, which connects the sides of the mainframe. The shift-key-lever is provided with a rearward extension 33 underlying the elbowed end 34 of a sheet-metal rock-arm 35 fast on the shaft 27. "It follows that, when the shiftkey 29 is depressed, its rearward extension 33 lifts the rock-arm35, thereby rocking the arms 24 upward'so that the stub-shafts 25 on, the latter will lift the shift-frame. The

shift-key 29 may be depressed until the shift-. frame is arrested by inwardly-turned heels 36 thereon, one on each side plate l9fthereof, and'such heels strike set screws 37 on the turned-over ends 38 of'arms or brackets 39 secured to a cross-piece 40 which connects the side plates of the 'main frame at the lower'rea'r portion of the latter. When the shift-frameis shifted to this'position, the

types, 41 on the type-barsll are effective to print, instead of the normally effective lower-case types42. Set screws 43, one at each side of the machine, in the brackets 39,

heels or flanges 36, arrest the shift-frame in normal lower-case position when it is al-' lowed by gravity to return to-such position upon. 'releasejof' the shift-key.

The character-keys 10, when actuated, move charac-ter-key-levers 44 around a common fulcrum-plate 45, supported on the cross-tie '40. Each key-lever 44, when actuated,-moves against the tension of'a spring 46 to swing a bell-crank, not shown, and,

. through the latter,'to pull on a-link, not

shown,to cause its type-bar 11' to swing. lo,.cause]the carriage to move from one letter-space position to another, while typing, there is provided a universal bar 47, supported; ijby means of arms .48 on a 'rock-' shaft 49.; with which universal bar thekey levers engage, when depressed, by means of shoulders or lugs 50 onthe key-levers. The rock-shaft '49 is journaled in brackets 51,

' one at each end thereof, secured to the cross- 'bar 40, An arm, not shown, 'on the universal bar connects with and operates escapement mechanism, not. shown, for controlling the letter-feed movements of the carriage; so that, upon each depression of any letter or numeralkey-lever, the carriage may have a letter-space advance under the action of the spring-drum. Escapement mechanism suitable for this purpose is shown in United States'Letters Patent to Dobson, No. 1,417,-

304, dated May 23, 1922.

Except when the ribbon is to remain in neutral position, as',for instance, in stencihng, the ribbon is to be vibrated upon each operation of a character-key, whether the platen is in lower or upper case-shift position; and, in accordance with the present invention, a bichrome ribbon maybe employed, in which event the ribbon may have a variable vibration to presentone orthe other of the color-zones thereof to the printing point. The ribbon 52, comprising colorzones 53Qa'nd 54, and wound upon spools, not shown, is threaded through the eyes 55 of a ribbon-carrying vibrator, which comprises arms 56, connected at their lower ends to form a U-shaped structure 57.. The ribhon-vibrator has up-and-down movement on a 'gulde 58, secured by screwsf59 to a rail 60, which is unitary with the front carriageguide-rail 16of the shift-frame, and which "depends vertically from the forward edge of the latter, and extends lengthwise of the vibrator is connected to one end of a lever .67. The lever. 67'eXtends right-ward, lengthwise .of the platen, and at its right-hand end has an arcuate slot 68 thereinto receive a pin 69 on a shift lever 7 Opivotedat 71 to a plate or bracket 72, secured by screws 73 to the shift-frame front rail 60, and by screws 74 to the right-hand side plate of the shift-frame. The lever 67 is therefore,'in

effect, fulcrumed on the plate or bracket 72.

The effective arm of the leveris, however, an arm of variable length, in order that, when the lever is actuated, by means present- 1y to be described, it may eifecta variable throw. of I the ribbon-vibrator to present either'of the black orrred zones of therib bon to the printing-point.

In Figure 3, the shift lever 70, carrying the fulcrum-pin 69 of the lever, is shown in its extreme right-hand position with the pin 69 at the outer end of the slot 68. In this I position of the lever 70,the lever 67, when swung up, will have such movement as is sufficient to present the upper or blackcolor zone 53 of the ribbon to the printing-point. In Figure 4, the lever 70 is shown in its extreme left-hand position with the fulcrum-pin 69 of the lever 67 at the left-hand end of the slot 68. In this'latter position of the lever 7 O, the lever .67, when swung on of a ty e-ke by the fellowing'means; On

I te mihe the eitreme Tight andleft han'dzpe eia,

iteyiuletmh, 'wjll eee'ct greatermevemem t. Pffi the =l'dwei' Or real; 6610i 'Z'Qiae 54 ;of the iihQ-j hen to the" priming-pa e "At "an me me: (liafte o1 'centi'a'lpeiiit' b'fthefslt 68; a-recessi is oftseft theiiefrem; 5nd,;whfih the 'letf 70. is sitting t0 StlCh position that the cruni-ijizj "6'9. regie'ters with this recess 75'; upwaid-indjveihfit of the lever 67 Will'S lnh ply eaes'e' thefi'tl lcr'umqih- 69 to entetthe ie cess 75 Without movement Of the iibbe'I-i" vibrate: "In this htterpo'sition, the ribbem vibrator is then silenced, has for' 'steiiiziliiig. The leve 170' arries fa fingeriece 76, by meahsferf which it may he' 'threW'i1' 'toet1-y mentthe three positions mentiened; a spring-detail; 77 oh the arm, by i egietietioh with pockets 7 8 in theplate "01" bracket "72,- se'lves'to hold the' lete'r 70 in eeleeted pesi tion. Stepins =79 80 may Serve "t-'de sitilons respeti'vely, (if the letter 7 05*- The 7 plate t72l1 n yfheetiitahlj arked as apt-81,-

82, 88, to {Indicate the proper pee-itien s 0f the lever 70 for Writing -i i1"b'lttck iedfbl' i0rneutial, i 'espectivelfl" "1' The lever 67 is aetiietec'l bn each ac'teat-ion an 21111184, forming part'ofthe breeket :72,

is ivoted at Keene endbjf fa, toggle 86 87. The other end Of the toggle-is pivotal ly -'con;-

7 holds the toggle in the 'Figu re '2 and 4 posit9 the toggle-arm 86 is El link I l 'a' stiff wire, one end of Whichi'shbokted into a hole-'91 iii the te'ggle-aijm iifiiii Suchci'nme'f the latter and the cogrn eetien 0f the same to the iibhoii -vihreiterk f g 89 Connected at one ehjd toth'ebrztbk 1 tin and at its other end to hie-toggle, ne-fmally tien, andietuihs the x'to g'letb etlch fp'esit'ion'when free to do so; zit-iiig" him-git the teggle ai1so ter turnthe levee '67 a'ti' c'l rib hen-Vibrate? to hoiinal pes ition, Gonhected comprises another-arm 98, WhiChpfOjetS G0 7 i rightw rd in front of, ehd ecre'ssthe'pztth of movement ;of', an firm 99,- which "islfast to, and extends vertical-1y upwxrdfrQm; the rock-shaft 49, "to which, he afolesem', the

imiversal bziu'; 47 eei1pects. I It fellows that, Whenever a type-key is f' It will also thef- 'lihk SU' 'tO; he drawn leftward. v This m'evement of the link- 90 str'eightens thetog? gle from eithe'rite' Figure 201'" Figure at p031 tie?! to its igure 3 pesitioli,the 'ehy throwing up tlLeleVeI-G'TWith the ribbon-vibrator (exeejet when the fulcrum-pin '69 of the lever' registei s with the IGCESS 75, as forstenciling). The spri g 89,;Wl'1ieh'retu-1ns the toggle joint'to hor'nial POsitiemtltaWs the link 7 90 riglitwetcl' w'vhe'h; the key is' vreleased, and

t-hei ehy-Te'tflrhsj the bell-crank -98 to normal pjo'eitiem Itwill he noted that, wh n the tojggle is e't -eigh'tenetl out, as in Figure I 3, fur-the? upward mevemem of the fle-vei 67-ttn'd "ribben-v-ib rato is i ossible. Over I threw' of the ribbon is thereby absolutely prevented. 7

'be hetedthatthe ribbeli hi'titel -fhes a straight-hie up ahd'c'letvn me lit fn'at'le pessi'b'lehy the tlisp bsitio h of the w two ear s 6 4: and thesttxd 66 as shown and de'zefiibe'c'h; that-the efi l of the lever" (a l'wpiveted 'te' ti part of'the etutl' '66 prevents leng'i mdimL-mevemem of the levei'faml the-tithe oppp'si te end fot the lever fleets upon the tel; i f'pin' 6 th the stud 66- stflkeetlle bottom of the 's'let 65 for a normal ine13'e1* etive step ind that the straightened-out toggle, utomatic allyisteps the tl'pwantl threw 6f the vibrziter at either ribbbn threw poit e itionf; that the stepping of-thej upwai'd thret'v' 61 the -i"-ihb'en by 't he straightened-out toggle providesf -retardedteanenlizsioe' to the Vibrator-,- thtlt, becomes "nil at, the-fend 0t steps ere em-played that 'sutldehly arrest/Lit- Vibrating part (if the ribbon-shift. control;

[end "thatthe whole ribhonvibreting and ribi bOIi-Sll-i'flllliQ mechehisms are, Iee-Operatively hieufitecl up a th'e shifting platen-frame.

Scope o f theinventien,kihtlpeftions of the improvements may he need 'withetit otherg.

', Having t'li ls' described-my ihveiiti'oh, I

c aim 1 In a typewriting' machine, ee platemla fihbofi-fvi hrater, eleVex-ifot epe'rati'nri' the l ii g the"ri'ibbohvihratorlever a 'elistztnce 13ft? "determined the strifightened-iout;tlength 0f stud jomted lever, -'t-ypjekeys, and means for actuatingthej'eihted lever froxii the type? keys; I

, 1119a typew' riting 'maehihe,

Flu

7 fat" l vlaten, a 'flbbon-vlhrator,tilex'er for" operating the ribbon-vibrator, means for shifting the fulcr'um of the lever, to vary the throw of the vibrator, to present to the printing-point a selected color-zone of a bichrome ribbon a toggle connected to the vibrator-lever between the fulcrum of thelatter and the'ribhon-vibrator,type-keys, and means. for actuating the toggle from the type-keys,

3,111 a typewriting machine, a platen, a ribbon-vibrator, a lever for operating the ribbon-vibrator, means for shifting the fulcrum of the lever, to vary the throw of the vibrator, to'present to'the printing-point a selected color-zone of a bichrome ribbon, a toggle connected to the vibrator-lever between the fulcrum of the latter and ther-ibbon-vibrator, type-keys, a universal bar adapted to 'be actuated by the type-keys, and means for actuating the toggle from the'universal bar;

QhIn a typewriting machine, a platen, a;

crum of the lever, to vary the throw of the vibrator, to present to the printing-point a selected -colorZone of a bichrome ribbon, a toggle connected to the vibrator-lever between the fulcrum of the latter and the ribbon-vibrator, type-keys a universal bar adapted to be actuated by the type-keys, a

link'connected at one end ,to the toggle, av

rocker to which the link is connected at its other end, and an arm connected to the universal bar foractuating the'rocker. 6. In a typ ewritingmachine, a platen,a ribbon-vibrator, a lever for operating the ribbon-vibrator, means for shifting the fullcrum of the lever, to varythe throw of the vibrator, to present to the'printing-point a selected color-zone of a bichrome ribbon, a

toggle connected to the vibrator-lever between the'fulcrum'of the latter and the ribbon-vibrator, type-keys, a universal. bar adapted to be actuated by the type-keys, a link connected at one end to the toggle, a bell-crank to which the link is connected at its other end, a rock-shaft upon which the universal bar is mounted, and an arm on the rock-shaft for engagement with the bellcrank to actuate the same when the universal bar is actuated.

7 In atypewriting machine, a platen, a frame for the platen, means for shifting the 7 frame between case-positions, a ribbon-vibrator on the case shift frame, a lever connected tothe'ribbon-vibrator at one end, eandfat its other free end having a" slot, a lever pivoted on the shifting frame and .having'a pinto engage within the slot and support the free end ofthe first-named lever, means for shifting thepin'along the slot to vary the throw of the vibrator-actuating lever to present to the printing-point a selected colorzonejof a bichrome ribbon, typekeys, and means for actuating the vibrator-lever from the typeekeys. V I

8. In a typewriting machine, a platen, a

frame for the platen, meansfor shifting the l frame between casepositions, a. ribbon-vibrator on the caseeshift frame, a lever connected to the ribbon-vibrator at one end, and at its other free end having a slot, a lever pivoted on the frame on which a pin is mounted, to l engage the slot and support the free end of.

the first-named lever, manual means i for shifting the pin -carrying lever to change the position of the pin in the slot, and thereby to varythe throw of the vibrator-actuating lever to present to the printing-pointa selected color-zone of a bichrome ribbon, type-keys,

and means for actuating the vibrator-lever from the typerkeys.

, 9. In a typewriting machine, a platen, a frame for the platen, means for shifting the frame between case-positions, a r1bbonv1brator on the case-shift frame,.a lever fulcrumed on the case-shift frame for actuating the ribhon-vibrator, manually-operable means on the shift frame for shifting the fulcrum of said lever to vary thethrow of the ribbon vibrator to present to the printing-point a selected color-zone, ofa bichrome ribbon, a two-part jointed lever having one part pivoted on the case-shift frame and the other part connected to the vibrator-lever between the fulcrum of the latter and the vibrator,

type-keys, and means for actuating the jointed lever from the type keys.

10. In a typewrlting machine, a platenfa framefor the platen, means for shiftingthe frame between case positionaa ribbon-vibrator on the case-shift frame, a'lever on the case-shift framefor actuating the ribbon-vibrator,means for shifting the fulcrum of such lever to vary thethrow of the ribbon-vibrator to present to the printing-point a selected color-zone of a bichrome ribbon,

a toggle on the case-shift frame connected to the vibrator-lever,type-keys, and means for actuating the toggle from the type-keys.

fulcrumed 11. In a typewriting machine, a platen, a

frame for the platemmeans for shifting the frame between case-positions, a ribbon vibrator on the case-shift frame, a lever fulcrumed on. thecase-shift frame foractuati-ng the ribhon-vibrator, means for shifting the fulcrum of such lever to vary the throw of the ribbon-vibrator to present to the printing-point type-keys. V 7

- crumed on the case-shift frame for actuating 12. In a typewriting machine, a platen, a frame for the platen, means for shifting the frame between case-positions, a ribbon-' vibrator on the case-shift frame, a lever fulthe ribbon-vibrator, a toggle onthe vcaseshift frame connected to the ribbon-vibrator lever,.type-keys, a universal bar actuable from the type-keys, a rock-shaft on which 7 the universal bar is mounted, a link connected'to the toggle at one end,"and an arm on the rock-shaft for moving'the link.

13. In a typewriting machine, a platen, a

frame for the platen, means for shifting the 7 frame between case-positions, a ribbonvibrator on the case-shift frame, a lever ful crumed on-the case-shift frame for actuating the ribbon-vibrator, a toggle on the caseshift frame connected to the ribbon-vibrator lever, type-keys, a universal bar actuable from the type-keys, a rock-shaft on which the universal bar is mounted, a, link connected to the toggle at one end, a bell-crank lever on the main frame, to which the link is cons nected at its other end, and an arm on the rock-shaft for engagement with the bellcrank lever to rock the same and-actuate the vibrator when the universal bar is operated. 14:. In a typewriting machine including a 1 platen, a platen-carriage, and a frame for shifting the carriage to upper and lower case-positions, a ribbon-carrying vibrator having a straight-line movement, a vibrating lever, and a manually-operable lever] for shifting the fulcrum of said vibrating lever,

the latter having one end pivoted to the vibrator to prevent longitudinal movement of the lever and the other end free to cooperate with said fu'lcrum-shi'fting lever, all

I mounted upon the shift frame.

15..Ina typewriting machine including a platen, a platen-carriage, and a frame for shifting the carriage to upper and lower case-positions, bichrome ribbon-vibrating and ribbon-field-shifting mechanisms wholly mounted upon the shift frame, includinga ribbon-carrying vibrator, a vibratory lever, a manually-operable lever for shifting the, fulcrum of said vibratory'lever, the latter being connected to said vibrator to prevent endwise'movement'of the lever, said vibraa tory lever formed with means at the free end to co-operate with saidmanually-operable fulcrum-shifting lever, and a toggle to vi-.

'brate the first-mentioned lever.

16. In a typewriting machine including a platen, a platen carriage, and a frame for shifting the carnage to upper and lower case -positions,fa ribbon-carrying vibrator a manually-operable ribbon-field-changing lever pivoted on=the frame and carrying a fulv crum pin, a lever extending lengthwise of the platenin front of the carriage and positively connected at one end to the ribbonvibrator and. at the other end loosely connected to the fulcrum pin, and key-actuated means on the frame to vibrate the last-mentionedllever to present a predetermined field of the ribbon to theprinting'point'and prevent any overthrow of the parts.

17.111 a typewriting machine including a V platen, a platen-carriage, and a frame for shifting the carriage, a ribbon-guldlng bracket secured to the frame comprisingparallel guide-arms and a guiding slot parallel therewith, a U-shapedribbon-carrying vibrator havingmeans to engage witheach guide-arm, a stud at the lower end of the vibrator to engage within the slot on one side and form a pivot on the-other side-of the vibrator, a vibrating lever secured atone end to said pivot and at the other end formed with a fulcrum slot, a shiftable fulcrumin said fulcrum slot, and means to vibrate the e lever.

V 18. In a typewriting machine including a platen, a platen-carriage, and a frame for shifting the carriage, a ribbon-guiding bracket secured to theframe comprising par- F allel guide-arms and a guide-slot below and parallel to the arms, a U-shaped ribboncarrying vibrator having oppositely-disposed ears to engage with the guide-arms, a stud secured at the lower end of the vibrator to slidably engage within the slot and engage with the endof the slot to arrest thereturn movement. of the vibrator for a normal inoperative position, a lever connected atone end to the vibrator and at the opposite end formed with a slot, a'fulcrum pin on the frame to engage within the last-mentioned slot, and key-actuated means pivoted on the frame to vibrate the lever and check the upward movement of'the vibrator to prevent overthrow of the ribbon field.

EDWARD e. Row EY. [n 5.

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