US885716A - Type-writing machine. - Google Patents

Description

A.T..BROWN. T D APR 2 9.98 TYPE WRITING MACHINE;

APPLICATION IILBD JANA. 1906. ssHEETs-SHEBT L 7 INVENTEIFL TNEssEs.

HIS TTDHN-EY TB TED PR.-28 1908. A. T. BROWN. M N I TYPE WRITINGMAOHINE. APPLIOATIQR 11.21) m4. 1906.

sums-$32M 2.

NEEEIES= TTEIHNEY No. 885 716. v

TYPE WRITING MACHINE. I AHLIOATI'ON- FILED JAN; 4. 1905.

' 3 SHEETS -SHEET 3.

vvfmssses. V INVENTEIH.

Emma, HE TTn gi PA'TBNTBD APR. 2a, 1908.

- specification.

improved ink ribbon (mechanism. for such -JiLE X NDER TLB'ROWN, or SYRACUSE, NEW YORK.

TiIPE-WRITING MACHINE.

. No. 885,116. v

1'0 at! whom it iner "concern: I V i :Be it known that LIAILEXANDER T. BROWN,

citizen of the United States, andresident of Syracuse, in the county Of Onondaga and State of New York,hav' e invented certain new and useful Improvements in e- Writing Machines, of which the following 1s a My invention relates to typewriting machines and has for its object to provide an machines.

-My. invention consists in certain features ofconstruction andlcombi'nations .ofparts which will be fully set forth herein and particularly pointed out in the claims. i

In the accompanying drawings, Figure 1 is a top plan view of a 'typewriting machine embodying my invention; Fig. 1 2 is '.a' front elevation of the sain'e; Fig. 3 is an end elevation, the carriage and printing mechanism bein shown in vertical section; Fig; 4' is a detall vertical sectional view showing; the .esca 'ement mechanism andone'oflthe ribbon" 25 and 9 are end views of a ribbon spool showin the clamp for retainin'g the end Of thB in ribbon in operative and inoperatiye ositions res ectively, and Fig; lOis a detai view of sai clamp. 1

' In the-present instance, I'have'showii ribbon mechanism applied to a ty ewriting 1 machine in which the printing-mec anismyis supported by a carria e which; is zmoviables over a stationary fiat p aten, but most-of the features of my invention.;are "equally fap plicabl'e-to other stylesof-typewriti w mechines. Saidflat laten is designated y the reference numera 1. The fra1ne said platenis supportedon ost's 2 and 1s rovided with a rail or trac 3 along each 0 its right and leftxhand' edges. Saidrailsy-or v tracks are shown as depressedbelow the stir 7 face of the platen, and the line spaceframe 4 rails. Rack bars 6 extendin' from the right;

is supported by rollers 5 which engage'jsa'id and left hand edges of the p atenlhaye rack teeth on the under side thereof whichare en-- gaged by feed pinions 7, by which the motion Specification of Letters Patent.

, Applicationfi-ledJanuary;,190E Seria1 No.239 ,642.

I Patented April as, 1908.

of said line space frameis controlled, The line space frame comprises two end pieces connected to ether at the rear by a rod 8 and at the front y a rail 12. The rod 8 serves as a rail on which. the rear part of the'carriage 9 is supported by a roller 10 journaled on a stud ,11 secured I to said carnage' The forward and 14, traveling on the rail 12.

The'con'struction of the platen and linespace mechanism need'not be more particu- Iarlyfdescribed herein as they are described and cla'imed in other a plications of mine, co-pending herewith. he framework of the carriage 9, as shown in the present instance, includes a forwardly extending portion 15' which is shown as a plate of. metal stiffened part of the carriage is supported by rollers 13 'byedepending side portions 16. The key le- -vers17 (Fig. 3) are i-voted on the underside of the plate .15 in ugs or ears 18 which, as here showmare secured to said plate 15-by nuts 19" threaded onto screwsor' bolts connected-to said ears 18and projecting throu h saidQ-pIate 15. At their through openings (notshown) in. the late are pivoted to the rear-ends of the key? ie ver s '17 and connect said key levers with arms 23 shafts 24 have a tangential arrangement the efromthe type bars 27 which their ends the tes 28. The arrangement is such that upon the depression ofany key lever the corresponding typeis thrown downward against the fiat platen v1. Each'of the tending arm 29 (F" sync the lo'yverI-hnd of which "is pivoted a iink or rod 30 extending forward therefrom and passin loosely ,throu h asuitable opening" in the ramebar. 31. acho'f the links ,30 has a nut 32 on the end; thereof and a spring 33 coiled about said 15, and are. provided with keys 21. Lin 22 or'ward' ends, t e key-levers project upward, asshown at 20, I

(Fig 2) on the outer ends of rock shafts 24 j ivoted ears-52 5 rising froman anmllarv 1 -.ame p late 26 ofsaid carriage The rock" jwelLknown in the art and have re ecting aveupon key levers is formed withra downwardly'fexlinkBO is compressedbetweenthe frame bar 31,-fand the nut 32 and-tends to, hold the key leverin normalyposition. 1 Between the arm 2 and the frame piece 31, the. link 30 is bent or 7 otherwise formed "with a shoulder 34 which is adapted to'en age'a' universal bar 35 the depending frame pieces rest 37. The

supported at it's'ends y arms 36 pivoted to universal bar 35 is held in its normal position by a spring 38 connected at one end to said universal bar and-at the other end to a portion of the framework. The universal bar is connected-by a link 39 to the dogs 40 which are pivoted to theframework'a't 41 and cooperate with an escapement wheel 42 mounton a shaft 43. A inion 44 is loose on said shaft and meshes wit a gear 45 journaled on a 1 stud projecting from the framework and connected to apmion 46 which meshes with a gear 47 fixedly securedon theshaft 48 on which the roller 14 is mounted and to which.

said roller is securedby a pin 49 passing through said roller and said shaft. The shaft 48 may advantageously be journaled in theframework of'the carriage b ball bearings 50 and-51. A pinion 52is ed on the Shaft 48 or, as shown in the present instance,

on the hub of the'wheel 1'4, and said pinion .engages a rack bar 53 which is secured to the side of the'rail 12-by screws 54 (Fig; 2). One

of the end ieces of the. line-space framehas projecting t erefrom a plate or frame portion- 55, and as ring drum 56 ,is supported on a stud or hea ed screw 57 depending from said frame-piece 55. "'A cord-or belt 58 is secured drawthe'carriage to the right. The motion I *ofthe carriageunder the impulse of said '1 35 sp is controlled by 'the'pinion-52 engaging't e rack .bar' 53 andsaid pinion is'controlled in turn'byj the escapement mechane ism acting throughfthe train of gears which 1 has beenydescribed It will be understood that uponithe depression ofjany key, the link draws the universal bar towards the.

j back ofithe'machine and oscillates the dogs "40,-and thus-permits a step-by-step .motion of the carriage. The pinion 44 is loose on the shaft'43 and has ahub' 63 formed with one member of a ratchet-toothed clutch as shown in'Figs. 3 and 4, and a sleeve 64 slidably mounted on theshaft 43 has the other member of said clutch. The sleeve 64 is formed with aninternal annular shoulder 65'- andthe shaft 43 is formed with a correspond-v .ing.-s'houlder 66, and a spring 67 is: coiled about the shaft 43 and is com ressed between said shoulders and pressest e sleeve 64 to ward the back of the machine, thus normally holding the clutch members in engagement. Pins-67 rojectfrom saidsleeve 64 mto open- I in s in t e escapement wheel 42- and prevent re ative rotation of said sleeveand said es The construction 18 such capement wheel. I that the escapement wheel and the clutch I hold the carriage against motion to the right;

but if the carriage be rasped and drawn to theleft, the ratchet toothed clutchyields,

' said ribbon s 001.

compressing the spring 67, andpermits the train of gearing to rotate.

The shaft 48 is extended backward past the ball bearing 50 and has secured thereon a forming one member ofa clutch, the other collar68 formed on its end with ratchet teeth member of which is carried 'by a pinion 69 loosely supported on the shaft 48. Said pinion 69 meshes with a gear wheel 70 fixed to a sleeve 71 journal'ed on a stud'72, projecting from the framework of the carriage as shown.- In the present instance, the end of the stud 72 is threaded into said framework, as shown'in Fig.4. The sleeve 71 is retained position on the stud 72 by a headed screw 73 threaded into the'end of said stud. The sleeve 71 is formed with an annular shoulder 74 and beyond said shoulder said'sleeve'is Iadapted to receive a ribbon sp'ool 75. The head of the screw 73'is not broad enough to interfere with putting the spool on the sleeve and removing it: Aspring 76 is fixed in a slot or key-way in'tlie'sleeve, 71 and is bent u ward at itsfree'end as shown in Fig. 4.

e ribbon s 001 comprises two flanges connected by a ub or core, which has one or more notches 77.formed in one end thereof,

andone or more notches 7 8 in the other end thereof (Figs. 4,81and 9). When the ribbon spool is pushed onto the sleevethe upwardly bent end of the spring 76 is ada ted to snap into one ofsaid notches, thus ho the riblion spool in place and also-actin as a key to prevent relativerotation of sai sleeve and The ribbon spool, being provided wit a notch on each side'thereof, is reversible. Afiat friction spring-79 (Fig. 4) is. compressed between the gear 70 and the framework. This spring serves to prevent backward rotation'of the car 70 whenthe carriege is drawn to the le t, and also serves to insure'a proper tension on the ink ribbon when said ribbon is being drawn off of the spool 75 The-escapement mechanism, pinion 52, wheel 14, and shaft 48' are inclosed in a housing 80 secured to or forming part of the framework of the-carriage. Itwill be observed, more especially by reference to Figs. 1 and 2, that the escapement and ribbon mechanism so far described, are situated at .the extreme right hand side of the carriage, and that the keymechanism and type mechanism are thus left free to occupy the entire central part of said carriage. On the left hand side of said carriage another housing 81 incloses a shaft 82 which is journaled in a manner similar to the shaft 48 and to which the wheel 13 is secured. A pinion 83 is securedto said shaft 82 orto the Wheel 13, and

said pinion engages the rack 53 in a manner being carried by a pinion 85 which engages a gear wheel 86 fixed upon a sleeve 87 which isgournaled on a stud upon which it is retained 4 by a headed screw 88, all in a manner similar to the corresponding parts on the other side of the carriage, operating therewith a friction spring 89 similar to the spring 79, and a ribbonspool 90 is connected. to the sleeve 87 in the samemanner as the ribbon-spool 7.5 to the sleeve 71.-

, As far as they ribbon feedis concerned, the

spoo Z5. The guidesj92and'94 are herev 's own, as plates of sheet metal f suitably formed and secured to the framework of the carriage by screws 95 (Fig; 1). As best metal 96 secured to. the framework by screws.

g the same. As best shown Fig. 1,'-;th'e sleeve 87 is shorter than :the sleeve 71 and is extending from ltheflguide-plate 92 to :the.

uide ortion 98ofthe inc 0 writing,- The ri .40 '1 .7 a line extendin toward the'lffhack of the,ma-'

' chine and: crossing the printing oint, toan-l other guide portion 99 by'whic [the ribbon is againbentat a. right angle and from which:

' tion of theprinting point is indicated in Fi'g: 1 by the type bar-"27. It will'be observed; that the part of the plate 93 which connects, the: guides 98 and-.99 extends to the right of -eut' away at thele'ft ofthe printing -'The. constructionis' such that after I shown in Figs, 1 and3 the guide plate-93is hinged at 94 toa depending portion'oi the framework which is here shown as aplateof A portion of the late 93 isbent-as shown at 97 and engages t 1e front face of'the, plate 96 to prevent theplate 93' from droppinlggtoo e a-ten.

far when the carr age. lifted. ii -om t p I A lug 93 on the under sideof the p ate-'93 (Fig. 3) is adapted -.to rest on the. "paper and hold the ribbon at a suitable heightzabove of such-a length that the portion of theri-bbon plate 93 is below the guide portion 98 .at abouta right angle, into it extends to the-guide 131.894; The posithe printingpoint, and that'jsaid plate93nis eing ' written the characters arequickly exposed by the feed of the carriage-to the right. order that each .icharacter shall thus come 5 1' intogview as quickl as possible, I prefer to arrangethe, guide p ate 93 so that the printing point shall 'be}beneath a portion oflthe ribbon near the left hand edge thereof, as indicated in Fig. .1 This being the case,

only half of the ink ribbon will be brought- "into use as said ribbon is drawn ste -by-'ste through the machine, and it is chie y for this reason that I have SOfCODStIYUCt-fid the spools The wheel 86 has co bon bent by said oint.

'75 and 90 that they can bereversed on their spindles. By making the spools reversible I am enabled when one ed e of the ribbon becomes worn, to reverse said ribbon in the machineto' use the other edge thereof without disconnecting it from the spools. The

typeba'rs 27lare;supported on the ring 26 in an arc which constitutes the greater art of a circle, the open part ofsaid circle sing in- It will be seen that the disposition of the parts is such that the-writingas visible to the operator.

Theupper ends of the'type bars are covered, or partiallyso, by an arc-shaped'plate 103 which rests on-the to of. the car iage frame .or casing and d in position by shouldered screws 104passinglooselythrough slots 105'in said plate 1033811d threaded into the top of the carriage frame. The plate 103 iscut awayor interrupted at the front of the machine like the other parts above referred to, and the edges thereofnear the ends are bent downward as shownin Fig; 2 and have slots 106 throughwhich pass shouldered screws 107,,threaded into the framework of .the'carriage. The endsof the plate 103 are bent downward as shown in 108 in Figs. 2 and 3." The-construction is such that by pressing on one ofthe.downwardly-projecting portions 108 the plate 103 maybe slidfback andforth on the top of the carriage for a short distance limited .by the length of the slots 10'5and 106. It will beobs'erved that "this motion of the plate 103. is in the nature of an oscillation. Theplate 103- is. formed with a-irecess at 109011 theleft hand side of the.

basket and Withanother at ;110 at the right hand side of said basket.

In the present 1 instance the plate .103 is formed of sheet :tnetal and'has its outer edge bent downward to engage the top 'of-zthe' casing of ftheicar- 'riage,;and said sheetrnetalis'st'amped up at 109 and 110'to form there'cesses referred to. Said (recesses are adapted to receive the ends ,of arms 11,1 and 112 fixed to rock shafts 113 V and "1 Leas by pins 115 extending through the hubsof said arms and through said rock shafts. Each of said rockshafts;113 and -1 14 is 'journaled :a'tits-upper end inthe framework of thercarriage 'and its lower-end in a big 11-6 projectin :from' said framework. Endwise motion 0 saidshafts is prevented by thehubsof the arms 111 and 112 and by collars 117 lfixed to said shafts below said I lugs 116. Each of said rock shafts has projec-ting therefrom an arm 118, the end of which extends between aiinular flanges 119 and 1200f the pinions 69 and 85., Each of said arms 118 has fixed to one sidethereof, as by rivets 121, (Figs. 6 and 7 a tongue 122 of resilient material, and said spring tongue also extends between the-flanges 119 and ,120., The construetion'i's such that if the arm 118 be, rocked toward the'front of the flange119 positively presses the o machinethe end ofsaid' arm'engagilriig thfi utc teet 'on the pinions 85 or 69 out of engagement with 'the clutch teeth on the o'ollars84 or 68;

"but if said arm beoscillatedtoward the back- -ofthe'machine the spring tongue 122 enga ing the flange 120 presses said .clut'c'h'teet t be obexactly in registerat the moment when the arm *1-18' is moved towardithe back of the machine, is'aidspringis put under tension,

and 'as soon as the parts begin to turn, it

presses the clutch teeth into. proper engagement- ;1 also said spring yields and permits the v clutch :to act as-a ratchet when the carriage is drawn'toward the left. When'the'carriage '15 thus drawn; toward the left, the friction springs-7.9 and- 89; prevent the ribbon spools from turnin backward.

1 Each of t erib'bon spools 75 and 90 has pivotedto one side thereof. at 123 an arm' 124,' referably of more or less resilient ma:

teria A portion125 (Fig. 10). of said arm;

"is bent Ito'one side-and extends inwardly through an opening'126 in the side of the ribbon spool; The edges of the inwardly extending-portion; 125 may be serrated and bent toward the'fhub of the'ribbon spool as shown at-125' in Fig. l0jinorder'to engage theink ribbon 91*,'and-.1'elamp the-same to' said hub, as. shown in Fig; 8. The arm 124 is formed with-a lug orpr'oje'ctiom1'27 which is adapted' -to' 'snapintoanopening .128."i n 't he side of the the arrn 124 in its clamping position. i (This rlibbon- 'clamp may be conveniently formed ofi'sheetmetal, in whichkcase" the projection -127 niay-' ,be' stampedin-themetal. a f

,Vai'io s; flanges in thedet'ails of construck- 'tion and' 'arrangement may bem'ade without departing from the gist of my several im'- 'g pr'ov ementst f Y What Ij'cla'im'asn'ew and desire tosecu'rel by Letters Patent, 'is:'- w

1;. The comb nation with "a ribbon spool, of

said pinions '5. The

n spool to retain drivinvmeans for said ribbon spool including a clu'tc i, one member of which is slidable' into and out of engagement with the other and is formed with a groove, a shifting arm extending iiitmsaid' groove and having a spring to e,'-said arm being adapted to engage one of i d'walls ofsaid groove to slide said clutch member out of engagement with its fellow andsaid springtongue being adapted to engage the other wall of-said groove to slide said clutchj'member intoengagement with its fellow. g t

2.-The" combination of. a ratchettoothed clutch, one member of which is slidable into andout of engagement with theothen-of a shifting device adapted when operated in one direction .to positively shift said slidable member out of engagement with its fellow and when'o e'rated in the other direction to press said s idable-member only yieldingly into engagement with its fellow; and a ribi bon spool adapted to be driven by said clutch when its members are in engagement.

t 3. The combination of a shaft having one member ofa ratchet toothed clutch fixed thereon, a pinion slidably mounted on said shaft and having the other member of said clutch, annular flanges projecting beyond the teethof said pinion, a shifting arm having a spring tongue,,said arm and tongue extending between said flanges, said arm 'being adapted. to engage one of said flanges to positively'disconnect said clutch members when operated in one direction and said tongue being adapted .to engage the other of said flanges to yieldinglypress said clutch memq bers into e operated in t e other'direction; a gear meshing with said pinion, and a ribbon spool operatively connected to said ear.

- 4.- The cornbination 'wit a type basket, of

ink ribbon spools on oppositesides of said basket, meansgfor actuating said ribbon spools tofeed the'ribbon, and areversing device including-a Lmemb'er 'arranged to be shifted bodily. substantially concentrically of salitgtype basket to reverse the feed of'the ink n on.

on opposite sides- 0 said printing point,

combination 'with a platen and a series of type bars arranged to strike said platen at a-common fpoint, of-ribbo'n spools agement with said arm when means for actuating one or-the other'of'said,

'ribbon'spools to feed the ribbon, an are- :shaped member extending around the-print point and mounted to be shifted bodily concentrically of the type basket, and ribbon feed reversing devices connected; to said are- ,shaped member. 1

6.---The combination with a type basket,

. ribbon spools-on opposite sides of said type basketgdr ving means for said ribbon spools for imparting a feed to the" inkribbon, a clutch for each of-said driving means, shiftranged in'a basket about the printing point,

-ing devices for said clutches and an arcshaped member s anning said type basket and adapted to, e moved in the arc of a circle, and shifting'devices for said clutches adaptedto be operatedby the movement of arc-shaped member. Y

-7.' Thefcombinationof a-series of'type arribbon" spools on opposite sides of said basket, a plate extending over said basket and mounted to be rotated concentrically of said .basket, and ribbon feed reversing. devices connected to said plate. Y

the core and flanges of an arm pivoted to one of said flanges on the outer side thereof, a

clamping member projecting from-said arm. Y through an opening in. said flange, and a spring detent between the flange and the arm for retaining said clamping member in clamping position. 9. In a ribbon spool, the combinationwith a core and a flange, of aresilient arm pivoted to said flange-on the outer-side thereof, a

clamping member extendin from said arm through an opening in said ange, and coopcrating latch members on said arm and flange adapted to hold said clamping member in clamping position;

10. In a typ'ewriting machine,the combination of a frame having a rack bar mounted thereon, a carriage adapted tomove back and forth over said frame, an escapement mechanism having connected thereto a pin ion which en ages said rack bar to control:- the motion 0 the carriage, a ribbon s 001 actuated by said pinion, a second rib on spool actuated by a Wheel engaging a portion said frame, and means for guiding an ink ribbon from-one of said spools to' the other.

- 11. In a typewriting machine, thecombi nation of a rotary spindle; a spring key mounted on said spindle; a. ribbon spool adapted to be mounted on. said s indle and. having at each end thereof a note adaptedv to be engaged by said spring key to retain said ribbon" spool in place andto cause said nation of a carriage 'ribbonspool and' spindle to turn together, the construction bemg such that said ribbon spoolis reversible on said spindle. Y v I 12. In a'typewriting machine, the combi- ;.su' porting shafts for said carriage; clutc I v ed on said shafts; pinions loosely mounted on said shafts and provided with clutch members and adapted to slide into and out of en- 'gag'ement with said rigidly mounted clutch members; and ribbon'spools geared to said 'PlDIOIlS. i

. 13. In. a typewriting' machine, the combination of a stationary platen; a carria e hav ing printing instrumentalities mounte therein, said carriage bein mounted for 'motion across said platen; rib on spools mounted on 7 8. In a ribbon spool, the combination with a 111, said carriage being Y across said platen, rib .said'carriage, and a ribbon guide for guiding Inem ers rigidly mount.

said carriage; and a ribbon guide for guiding the ribbon past the (printing point, said guide ties, and ribbon mechanism, said. ribbon mechanism comprising 'a. Tpivoted ribbon guide adapted to guide an ink ribbon across thepri'ntin point and a contact part on said Y ribbongui e for enga ing the pa or to prevent contact therewit of the in ribbon.

15. In a typ'ewriting machine, the combination of a stationary platen, a carria e having printing instrumentalities mounte there mounted for motion 'on spools mounted on the ribbon past the rinting point, said guide being hin ed to sai carriage and being provided wit a contact part for enga ing the paper to prevent contact therewith of the ink ribon. v

16. 'In a typewriting machine, the combinationof a stationary platen, a carria e havprinting instrumentalities mounte therein, said carriage being mounted for motion across s'aid platenand bei be raised away from sai spools mounted on said carria e, and a rib- .bon guide for guiding the rib on past the printing point, said guide being lnn ed to saidcarriage and also being provide with meansjor limiting-[the downward motion thereof when the carriage is raised from the platen.

17 In a typewriting machine and in ink ribbon mechanism, the combination of means for guiding an ink ribbon across the printing point in a direction up and down the page of writing, types adapted to strike said ribbon near one -e ge thereof,- and a pair of spools for said ribbon, said ribbon s ools bein reversible so as to bring the ot er edge o the ribbon-into use. p v r 18. In a typewriting machine and in ink ribbon mechanism, the combination of types adapted to Y strike at a common printing point, two ribbon spools mounted on opposite sides ofthe printin point, and ribbon guides for guiding the ri jbon from one spool part of-the ribbon that covers the printing point extends ina direction up and down the pa e of writing and such that a part of the rib on near one ed e thereof is led v'erthe printing point,, sai ribbon spools bein reversible so as to bring the ot er edge 0 the ribbon'into use;

also adapted to platen, ribbon its tothe, other in an off-set path such that the 19. In a typewriting machine, the combi- Signed aii; Syraeuse, in the county 01' Ononnation of a stud having a head, a hub con- 2 daga, and State of New York, this 30th day fined by said head and revoluble upon said of December, A. l). 1904.

stud, said hub having a slot, and a, yielding i ALEXANDER T. BROWN 5 detent protruding fromsaid slot, and a rib- Witnesses: v bon spool. having in. its core an opening to be 5 REBECGA M. SMITH,

" en a ed b said detent. i MYRTLE L. EATON. g g y l

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