US1826780A - Typewriting machine - Google Patents

Description

E. HARMON TYPEWRITING MACHINE Oct. 13, 1931.

Filed Sept. 25, 1928 2 Sheets-Sheet INVENTOR ATTORNEYS Oct. 13, 1931. E. 1 HARMON 1,826,780

TYPEWRITING MACHINE I Filed Sept. 25, 1928 2 Sheets-Shee'c 2,

lcrToRNEYs Patented Oct. 13, 11931 Y i Lezama i vTYPiivvieLTING :MACHINE ,QH v

Application :filed useyitenber' 25;.192s-1-.- sentii ma, 308558; Y

rDhis; invention: relates to improvements in typewritingmmhnes'and i other type fprintvy ing;*machinesf` having; travel/ing A pa-'peny or Plin Carrgsi and more apartieu-larlyfto carriage travel arresting meansfor suchma- The :invention :has: for.: its7 pr inoipavlgtob,-A jects .gto provide an i eflioie'nteadwsta'ble f ear,-`

kriage fstopf` and stoprfimonntngg ,to provide Aefficient?. right and :leftfi handma-rgin f, deter,-

. mining means -fortypevvritinggmeans topro vide, adjustable -niargin stops for limiting endwisegmovenients of i a fplaten: carriage Whiolristops:mayfbeneasilyy and quickly,y ad! fjlisted, wil-Lbeest-nrdyfand durable-and effi.-

cient ging use, and may.y bemanufactured' at lowcost-'g g and-toY:providevafstop,` carrying-,bar

and.;V adjilstableffcarriage stop devices` con.- struoted@for` 1; seoule:;loekinggo the Astop y in dflerent: adjusted l:1positions-:along the.y bar,

and -for fea-sy? :release--- and adj-iistment 'l of the tionfandgpartioularly;fp'ointedfout in-:the'api a; portable? threeaquartenvstrike;ftypewriting maehineftof theekind disclosed inftheffapplif- To ,thegabove' #a-ncl-other` lends l-vWhich p v'v'illA hereinafter ymorenelearlyV appear., l,the invention; consists fofwthe; features-:of foonstruotion, arrangementsof p arts, and" combinations y,of devices -setf forth? gin; the; -follovvi'ngf speci-fica,-

pended claims.

` Eorthezpurpose-of l-lu'strationithe inven-k tion has been-showninrthe drawings as embodied 111:1a'marglilf:control.mechanism1ffor cationrof Avery, ,Peter-mannr andi: Harmon,

Serial Njo. 148,258', filed November,13, 1926. (now PatentgNm1,700,829, dated February 5',- 19291) for arresting; return i movement of :thelearriage and for arresting advanceof the carriage-and lockinggthe machine against' operations IIL- the present instance'thefmaohine isfshovvn providedA Witha a Sheet,l metal :car-

riagecandfiearriageibed 'of thefkind .disclosed y injtheapplidationaofiEly, Seral'NoL198,265,

filed Jiine 11,11927Know Pat-ent- No: 1,7 41,689, dated -DeceInber-fl; A1929.) .w17

Fig. 1 is a rear View ,of thepglatencarria'ge Y landioedoftheemaeliine lookingthereatf'pernormal plane-1 ofy y face-fofthe stopl bar on the icarlriage;` n f Eig; .2 a top,- vieW ofil thev .parts shown.v in Fig,1Y lookingfthereatA perpendioular to the the top i faceV of "thef stop bar l f Y, yFi g. 3V a' fragmentary sectional vieWvon-the linef3'-3 of'Figfy.

` pei-idioularlto 4r'the' loi-i the.I rear v v Figi 4 V- a Sectional,l View f on. .the vliner i- 4 l i Fig,4 8 a-sectionalviewfon-the line-S--SV of i Vthe anglff with thev` horizontal which`I said ,pai-ts make in v,the Inae'hilie;

Fig, 9y a 'viewl showingfthe partsgfof the left lilig; 1,- the. carriage -landf-bed ,being- ,shown at hand marginfoontrolv stopf device! inI .pe-irspee-` v.

. tive an'dzseparatedg' Vli`\ig. 10` asectionalfview on theline- 10.-10 Y f ofJ Eig, 2, `showing' the left 5hand zmargin: ,conf

trol stop device in locked position;

vFig-,'11 asectionalfvieWon-ithefline 11%11 Figs. 1Q andl'fragmentarysectional'views and Vleft-hand mangi-nsf lcontrol stopfv devices,

` respectively, saidY Eig'sil andi'l being taken on; the salme ylinesaseFigs'. .4 and 118,?,respee-Y tively-and.Y i if 'n Figgl a detail viewfshowingfthef-stop.bar oscillatingglever." Y Y -v u y 11i-the mach-ine diselosednfi-n' thefapplieations `above'referredfto,thefplatencarriage@15 is mounted-.lon the carriage bed 16 toftravel transversely/1 of the,^ machine, fantifrietion bearings being;interposed-between the I`raee- Way? iiang-esot the {carriagefand bedgfandsaid bed being supported inthefrmaohinefatfthe an gle Withfl theyhorizontal shown in Ei'gss:

`anclg Vto su Jort the carriage, as shown-in tif) 2 Leser/eo said views for impacts of the types on the type bars of the machine upon the upper front quarter of the platen 17. rEhe platen shaft is journalled in the end plates of the carriage, and a margin stop bar 18 extends longitudinally 0f the carriage a short distance above the rear edge of the carriage base plate.

The stop bar 18 is detachably held to the carriage7 being provided with trunnion screws 19 journalled in the carriage end plates and 'hreaded in the ends of the bar and is adapted to be rocked clockwise, as viewed in 4, from its normal position shown in said view to stop clearing position by means of a. hand lever 2O fixed on said bar. Said stop bar is provided about vmidway the ends of its front face with anotch 21 part way into which projects the rearwardly extending arm of a braclret 22 Xed to the base portion of carriage to hold the bar against endwise movement relatively to the carriage while permitting said bar to be oscillated siiiiiciently todisengage the stop devices thereon from the cooperating stop devices supportedV from the carriage bed. The stop bar provided with square cut notches 23 extending entirely across its front face and spaced a letter-space distance apart.

A sheet metal carriage retaining gib or bracket. member 24 is held to the carriage bed by screws 25 and 25 at the under side of the bed and has a pair of carriage retaining arms QG curved upward and forward around the outside of the rear raceway flange of the carriage and an intermediate upwardly and rearwardly extending rigid stop arm 2'?. The carriage has a feedrack 28 meshing with a feed pinion 29 ona shaft 30 journalled in a bushing 31 swaged in a metal plate 32 forming par; of the dog rocker supporting bracket Vof the machine which is rigidly held to the carriage bed. The bushing extends through lan aperture in the bed and a hubbed escapement ratchet wheel 41 is fixed on shaft 30 below the bushing.

The bushing 31 is stepped to provide a short, intermediate, cylindrical bearing por' tion (indicated in dotted lines in 4) on which is pivoted a line-locking lever and carriage stop 34, the bearing portion of s. ld lever being confined between the plate 32 and 'the upper end of the larger lower port-ion of the bushing. A. spring 36 anchored to a suitable part on the carriage bed at one end is connected at its other end to lever 34 which it normally holds in the position shown in Fig. 2, with stop edge 37 of the lever against one side of the head of the screw 25, linelocliing arm 38 of the lever out of locking position7 and margin stop operated arm 39 of the lever to the right of the vertical, stopengagement7 left hand edge o-f stop arm 27 gib 24. The head of screw 25 is thicker than Athat of screw 25 so as to project into the path of the lever 34, while arm 38 of lever` 34 is odset downward to clear the thin head of screw 25a.

The line locking lever is rockable to the position shown in F ig. 3 where it is positively arrested by engagement of stop edge 4() thereof with the side of the head of stop screw the nachine referred to, movement of lever 34 into the position shown in Fig. 3 carries locking arm 38 into the throat of a hook arm of the dog rocker to lock the nn chine ag ii operation, and the dog rocker is operable by the universal bar of the mane cause scapement dogs thereon to cote with ra @het wheel 41 to feed the carriage step by step from right to left for letterspacing, as shown and described in said application of Avery, letermann and Harmon. rlhe carriage is returned by a line-spacing lever, as is usual.

*1. rlhe foregoing parts are all constructed substantially as shown and described in the applications hereinbefore referred to and further description thereof is believed to be unnecessary to a' full understanding of the present invention. rlhe improvements as illnstrated in connection with the foregoing parts of the machine will now be described.

Left and right hand margin controlling stop devices are adjustably mounted on the 1 stop bar for cooperation with the stop devices 24 and 34, respectively, mounted on the carriage bed. Each of these stop devices on the bar consists of two members, each of the two members of each stop device being formed of a single piece of sheet metal and being entirely independent of the other member of the device, i. e. having no positive connection therewith. The abutment member of each stop device is embraced at opposite sides thereof bythe locking member of the device, and said members are held in embraced relation solely by the stop bar which is passed therethrough before the bar is mounted in the carriage. f

The ad" able, left hand margin controll 1,', stop device cooperates with stop arm 27 of me nber 24 to arrest return movements of the carriage toward the right hand side of the machine a-nd consists of the locking i,

Aefnber 42 preferably formed of thin sheet 'cel and the a` ent member 43 formed sheet steel. Each of s a yoke-like main body Y of a fiat rear wall and a pair of flat forwardly extending side walls or arms. Member 42 has an in- 'tegral7 tempered, spring tongue extending from the rear wall 44 of its yoke portion7 the free end of which presses against the rear wall 45 of the yoke portion of member 43. rlhe side arms 46 and 47 of member 42 abut the outer faces of side arms 48 and 49 respecttively, of member 43.

rlhe side arms of member 43 are provided 30 free lowerl end of spr-ing tongue .53 is preferrif.

. withfiregistering rectangular. apertures 5.0. .in

which the stop bar 18 hasqasmlg ,Slidingatit I the .face ofextension48..opposed ito that face v,ofi said] extension.- whichA engages. thewerteal Thes'idearms of'member 42 are provided f-'Nvith registering rectangular apertures "51.v

6.-..throughwhich l.the stop. bar extends,l the-'top and-:bottom edges, ofwhich openings slide on -..the. :top-..and .fbottom-.dacesof the stop liar. rApertures lareelo'ngated .foreand-aft so that the yoke portion of member 42, 1nay slide 1 V.10 1fore..and.afttransversely of the bar, .beingnormally pushed.. rearward.' to. locking positiOn-.by the pressure of the spring tongue ofv 'stopdevce willfbesuffcent Stereoa- .Ilflernberl42 ,against :wa1l45 ofmember 43.

vPreferably,.as shown, only the'front end l5 of`arm47 iszadaptedto engage in a. locking vnotch 230i vbar 18;-when` thel yokeportion of,

niece... Member .haette yoke-'like 119.015?. p0r- Ymefmber42 is` spring-.pressed rearward vto `loe-king position, Varm 46lbeing preferably :folded outward away from arm l47 along ythe l l0 line `of the front edge of its aperture` 5l into.`V l

58 and 59. areprovidedwith apert ure s 67'1 "u similar to apertures.51,y and arm y58 iis formed yfv .\ri t l 1;a laterally' bent f orward'end portionor parallelism with the ront'face of the stop bar yEto .provide arelatively broad iiat abutment lug 52 incapable of entering a locking notchand vbearing flat against the front face m25 A 47 is dra-wn rearward into a locking notch.

`The spring tongue 53 of locking member 42de. preferably relatively narrowI and of Y J-shape in side elevation, the shortarm of tlthe. springr tongueextending upward` from the. middle of the upper edge of. wall 44 and the long arm of the spring extendingdown- ...wardto a point.-between- sidearms 46 and 47 and 'being spaced `forward: of the short .535 arm-of the spring-and. wall 44 sufciently to allow member'42 to, be pressed forward, by;

. ythumb pressure on therear .face of wall 44, far .enough ltovcarry thel frontend .of arm 47 outof alocking notchof the stop bar. .The

- ably proVidedwi-.th twooppositely. and laterallyextending Contact `arms 54 the outer ends Y otwhich are preferablybent `forward as 1ant, contact portion for the right handv mar- -shown .to contact withy .the rear. face. of wall posite sides voi'fthe wall. in the medial .fore

.and aft planeet thestop bar, as shown'. The shortLarni z of spring tongue 53 `is preferably cocked rearward-out of the plane of .wa.lll.44,

Y with apertures 68 similar tofaperturesl 5.0L of;u

- :ed as shown.

"formed witha flat pendant extension or contact Wall48a mergingat its'rear. edgewith one edge Yof anflat pendant extension:4 5fofy -.-;55 wall 45 which extension. formsa brace'for'.

contact wallpportion 48a. of the abutmentl member. y:Said `contact wall portion is pref- .erablyadditionally braced, to'furtherresist. .bending.. .thereof under the heavyv shocks, to .f awhich it is. subjected in arresting the usually rapid. and violent return Amovements of .the

carriage, ley-means of a ftransversebrace lug-Y 49%l extending vinward from the lower edge of bar apertures in the lockingwmembersmaybe extended sufficiently .tothe reargtoprecludduo sidearm49 and abutting contactwallv portion 48, saidilug lyingdiatwise in a plane o-` the stop bar when the vfront end of. arm

tongue lfwfithlateral arms ,62 hailing for` e46-A45. at two laterallyy spaced points adjacentop 'Theside arm 48 ofkabutmentfmember 43 ismy 56.. is embraced bythe yoke portion of mem'- tOJer fwhen, thedeyiceis assembled onthe o? straight 'leifthand .Stop :edge vqonitf stOP' Avarm 70 The adjustable*'rghtlland .marginontrolling., stop device.. is of.. .substantallythe f same constructionas the adjustable, lefthand 'margllfcontrolling stopgdeyice' just described r and aI brief descriptionfthereoffwith refer-W vence .to th e parts of. the .left handmargin tion termed (1t-rear wall. audsde. varfmsor Walls v 58 .and 59, similar,respectively, gto. wall 44 and armsf46 Yand 47, of'member42.

abutment lug 6,0 similar toportion- 52. 57 is formed withan. integral 1-shaped spring.

wardly bent contactendssimilar. to spring 53 and arranged l and coactiye: with k'rear Wlall y63 'ofthe yoke portion ofmember. 56y in the samemanner asspring. ,53 -is arranged and 95 Coacts with wall .45.` i M 'The yoke portion yof member 5 6 consists of .the .flat rearwall. 63 andside .arms orj .walls 64. and 65si1ni1ar to. wall 45 and arms 48and 49 ofmember43, eXceptthat-neit'her side arln., has. a ,pendant-extension while .the rearwall ""1 6 6, .the left hand edge o twhicheoacts with therightfhanfd edge of lthe y.rearwardly projecting Contact head yportion 39of 'of 'the Carriage Stoppt-maud. .llleioering .1e-frm` .ver34.'r v ff Itis unnecessary to provide abraced, pend- .eseapementandis not, therefore, subjected Y.to

heavyshocks Arms 64 and 65are provided member 43, and-the yoke portion of member The stopbagr 18 .hasletterspace scale gra-.d f lnations 1 6 9 and associated numerals .7 0 stamped vinfits--rear-` face. '.'These numerals and. graduation .markings terminate short of the top Y and 'bottom' edges offthe rear face of vthe..bar and the-rearedgesoflthe apertures 125 in themembers of the stop devices arepreferably xcut-y .back as. indicated.- at 71- A.to clear said .numerals andmarkings.v 'The' elongated `has. a pendant extension :encontact portion.

engagement of the rear edges of said apertures with the rear face of the bar when the springs are fully compressed, if desired. The arrangement shown is preferred, however, the foremost edge portions of the stepped rear edges of the apertures in the locking members engaging the rear face of the bar after the locking member is released to prevent crushing or flattening out of the bent extensions 54 and 52 of the J-shaped springs under .heavy forward thumb pressures. The

` gin controlling, stop device 7 3 is shown.

These stop devices are constructed precisely like the corresponding stop devices shown in the other views, except that the J-shaped springs are formed integrally with the lower edges of the rear walls of the locking members of the stop devices.

The described construction wherein each stop device consists solely of two independent members, each formed of a single piece of sheet metal and having no positive connection therebetween, one of said members constituting the abutment or contact element and the other member constituting the adjusting and locking element of the stop device, affords a simple, light, and inexpensive stop device. It will be observed also that the stop devices are easily releasable and adjustable by finger pressure, and that the only part of a stop device that is flexed in releasing is the integral spring tongue.

The construction and arrangement of this integral spring tongue, shown and described is advantageous in that a narrow highly flexible tongue is provided, shaped and arranged to afford a spring of great resilience but of compact form andin compact relation with the other portions of the stop device. The construction and arrangement of the spring and the parts of the stop device are also such that spring pressure is so distributed as to prevent cocking of the abutment member on the bar when the locking member is pressed into releasing and adjusting position which would cause bindingof the abutment member on the stop bar greatly resisting or preventing adjustment of the stop device. The normal rearward cooking of the J-shaped Vspring relatively to the planes of the rear walls of the two members of the stop device allows full flexing of the spring without the spring striking the upper edge of the rear wall of the abutment member and, thereby lessening the resilient "force, exerted on said abutment member. i w

It will be observed that thenon-locking side arms46 and 58 of the two stop devices are at the inner sides of these two devices, i. e:

at the sides nearest the middle of the carriage, while the locking arms 47 and 59 are at the outer sides of the devices. By this arrangement the locking arm of each device is backed upV by the adjacent abutting side arm of the abutment member of the device so that it will not bend under stopping strains. By providing but one locking arm diiiiculty and expense of precision manufacture which would be required to provide for entrance offon the locking member constructed as shown and described is advantageous, however, in that the locking member is thus accurately guided in its movements both transversely and longitudinally of the stop bar, this nona locking arm being precluded from engaging in the notches of the bar at any time by the lateral extension or lug at its front end and acting to resist cocking of the locking and abutment members of the stop device when` the stop device comes in engagement with its cooperating stop on the carriage bed.

As the carriage approaches the end of its letter-feed travel from right to left for which the right hand margin controlling stop device on bar 18 is adjusted, the left hand edge" of contact portion 66 of said device engages the right hand edge of Contact head 39a of arm 39 of lever 34 and rocks said lever from the position shown in Fig. 2 to that shown in Fig. 3 against the pull of spring 36, where# upon lever 34 is arrested by the head of screw 25, thus stopping the carriage with line-locking arm 38 of lever 34 in its machine-locking position.y Upon return of the carriage from left to right, the right hand face of contact wall 48n of the left hand margin controlling stop device on bar 18 engages the straight left hand edge of stop arm 27 of gib 24 on the carriage bed and immediately arrests the carriage. The pendant portions a and 48"L of this stop device are made short as shown to permit the same to pass over head 391 of lever 34, while pendant portion 66 of the other stop device is adapted to pass behind stop arm 27. Either adjustable stop device may be swung to clearits cooperating stop for typing within the marginal areas by rocking the handle Vportion of lever 20 forward. Lever 20 has a pendant stop arm 74 normally held by the weight of the stops, aided if delp'plane of thebar axis.

sired by a suitable return springfor the stop b ar, against a stop portion 75 of t-heca'rriag'e.V Said leveris also preferably providedwitha y. second stop arm 76'adapt'ed to rock doWns."W'ard into engagenientfwith tbe bottom of the yCarriage to limit the extent ofstop-releasing rocking movement ofthe stop bar i8. It 'will ybe noted that the 'mag orfportion ofthe Weight ofthe stop devices' isinfr'ear ofthe By making the abutment member of each ,stopr device ofsub stantially thicker sheet metal stock than the locking member-of the-stop device,y theside arms of the abutment mem- 15? bers maybe made atvvithout danger of en- Y gagement thereof in the notches of the stop bar. ,The heavy gauge stock` of the abutment members also affords strong abut-ment portions for the stop devices which will not be bentf out :of shape in operation.,v and these strong ,rigidl abutment members back up or brace thethin locking side arms of the lockingmembers. y K j 'What I ,claim is :l

1.-' In' a typewriting machine, thecombina-V tion offatraveling platencarriage, a margin stop bar onvthe carriage of rectangular crosssection and having stop-locking notches eX-` tending transversely ofv one face thereof spaced aletter-spacel distance apart, pair' of margin stop devices mounted'on said bar-for adjustment therealong and locking thereto7 each' of said stop devices vconsisting solely of` an abutment member and ia comaY Y bined adjusting and locking jmember each formedfofa'singl'e piece ofsheet metalythe registering' apertures through which thefbar extendsiandthe transverseparts of Whih 'are located: at the opposite face of the .bar from, thegnotched barface,the body portion of the locking member embracing the body portion ofthe abutment member, theside arms of the abut-ment member beingvof greater thickness thanl the Width lof the' barnotche's and the apertures therein beingshapedfto preventl relative transverse movement betweeny the member and bar, one side arm of thebody portion. ofthelocking member being `en` gageable in the bar notches and'theapertures in' the .side arms of said member.' being shapedV to permitshifting o f the rigid body portionk thereof inr av path perpendicular to the transverse partofth'ebody portion of the locking vmemberbeing formed with an inte-j gral spring'tongue;bearingagainst the transverse' partf'ofthe body portionfof the abut# ment "member, and normally'yieldably hold ing4 the locking Vmember 'in V,locking position,

the left lrandlmargin stop having ai contact Wall for. engagingaffixed stop, formed as aV pendant extension, }ofone side arnr of .its

Q5 abitentymember; contact lWallbeing vertical v theplane of the notched face of the bargonly',

` braced by anlintegral lug extending laterallyV from the other side 'arm of thejabutment VVmember. y. e f ,i

2.' In atypewriting machine having a traveling (zar'riv'age,l thecombination of af carriage stop carrying vbar of rectangular 'cross-section having transverse notches 1n oneY face thereof,l

andacarriagestop mountedojn and adjl'istable alongsaidbansaid stop comprising a'n body portion slidable along said-'bar 'a abutment member having a rigidl y'ole-lile'rml locking member a rigid" yol'elile" l body portion embracing the body portion of' the Vabutment .'rnemberr slidable along said bar and ,also slidableftrais'verselyof thef'b'ai'I perpendicu.lai` to the notched fable' Of the br sol into and out'- o'f engagement with'fthefbar' y' l notchesy to locltthe stop"against"ifiiveinentV along the bar',A the. transverse par'ts A0f the yoke-like body portions of the stop ni'einbers being Vspaced apiitand'located at the'opp'o site face ofthe'bar fronofthe notched barface,l and the transyer'se part ofthe yolielilte tbody i portion of the" looking member being fo'rlnedr with an integral. rJ-shaped4 fsq'or'iii'g r,to'irigiie' ysin the shorter arm ofvvh'icliV 'isIV joined-vvifth l edge of said part 4,e'itendingilengitndinlly' of the baiaind the" fr'e'end'o 'the leiig'er ing member in stop-lo'eli'ng"position.r`

abutment member tov yildably hold the' lock-l.'v

3. in typ'wrting machine having ai traveling "Carriey section havi t'tran sverse" notch inone `vface v I Y the combinatijr'lo'f 'nage 'stopfearrym bafofrectangular cross;

timmer, and stpnrmited nan'd adjustable along said barysaid stop coinpi'j'i'si' f ing an' abutmentiiie'iber haying ar'igid yokelilre body' portion slldable only" al'orgs'aid barand a" locking inem-ber'- ha'v'lng' yoke-like body peinen- 'eiabraeing the `body t portion of Uthe abutment I i memb'e'rfA slidable along saidfbarf also slidable transversely ofthe bar solely' in apa'th :perpendicular tfo sweetened factor thefbar'into out; i

gagement Wahine bar normado-*lockthe abr-against' movement aber the bei", 1

passingthre h the@ e parteci" the ykgeiifkefbby 'perdons endg-'being -t-Hesdle element holding 'said members 'inf opera we @lattea-the 'transverse' v bociyf poi-tions or the stop; fenibjes being spaced and located at' the faeeefthe bar j from vthe notched face", p and tHe-trans"- 125 j vf springt'onguebearinga'tits'free errd like body portion of the abutment member facing in a direction opposite to that in which the notched face of the bar faces, the yoke-like body portion of the abutment member having an integral rigid contact part eX- tending therefrom and an integral brace engaged with said contact part.

4. In a typewriting machine having a traveling carriage, the combination of a carand also slidable transversely of the bar pero' pendicular to the notched face of the bar into and out of engagement with the bar notches to lock the stop against movement along the bar, the transverse parts of yoke-like body @portions offthe stop members being spaced 25 and located at the opposite face of the bar from the notched bar face. and the transverse part of the yoke-like body portion of the locking member being formed with an inte- 3.0, gral spring tongue bearing at its free end 7against a surface of the transverse part of the yoke-like body portion of the abutment member facing in a direction opposite to that in which the notched face of the bar faces, the yoke-like body portion of the abutment `member having an integral rigid contact partextending downward from the lower edge of one side part of said portion for movementlagainst a cooperating stop and braced against impact thrusts by an integral lug which extends longitudinally of the bar from the ylower edge of the other side part of said portion into engagement with said contact part.

5. In a typewriting machine having a traveling carriage, the combination of a carriage stop carrying bar of rectangular cross-section having transverse notches in one face thereof, and a carriage stop mounted on and adjustable along said bar, said stop comprising an abutment member having a rigid yokelike body portion slidable along said bar and a locking member having a rigid yoke-like body portion embracing the body portion of the abutment member slidable along said bar and also slidable transversely of the bar perpendicular to the notched face of the bar into and out of engagement with the bar notches to lockthe stop against movement along the bar, the transverse parts of yoke-like body portions of the stop members being spaced and located at the opposite face of the bar from the notched bar face, and the transverse part `of the yoke-like body portion of the locking member being formed with an integral spring tongue bearing at its free end against a surface of the transverse part of the yoke-like body portion of the abutment lmember facing in a direction opposite to that in which the notched face of the b-ar faces, the yoke-like body portion of the abutment member having an intergral rigid contact part extending downward from the lower edge of one side part of said portion formovement against a cooperating stop and braced against impact thrusts by an integral lug which extends longitudinally of the bar from the lower edge of the other side part of said portion into engagement with said contact part, and further braced by a downward extension of the transverse part of said portion which forms with said contact part an integral angular pendant extension of said portion. Y

6. In a typewriting machine having a traveling carriage, the combination of a margin stop carrying bar on the carriage of rectangular cross-section having transverse stop-locking notches in one face thereof, and a margin stop mounted on said bar and adjustable therealong, said stop comprising abutment and locking members each formeY from a single piece of sheet metal, said members having non-resilient body portions of yoke-like form each comprising a flat transverse wall parallel with the notched face of the bar and located at the opposite side of the bar from the notched face and parallel Hat side walls through registering apertures in which the bar extends, the body portion of the locking member embracing the body portion ofV the abutment member with the side walls contacting and the transverse walls spacedl apart, the apertures in the side walls of the abutment member being shaped to prevent transverse movement of said member relatively to the bar and the side walls thereof being too thick to enter the bar'V notches, the apertures in the side walls of the locking member being shaped to permit transverse movement of the body portion of said member transversely of the bar only in a direction perpendicular to the plane of the notched bar face, the free end of one of the side walls of the locking member being adapted to enter the bar notches andthe free end of the other side wall of the locking member being bent outward tov form an abutment wider than the bar notches adapted to bear against the notched bar face when the firstmentioned wall engages in a bar notch, the non-locking side wall being located atv the leading side of the stop, and the transverse wall of the locking member being provided with an integral spring tongue bearing against the adjacent face of the transverse wall of the abutment member between the side walls of the locking member` y 7. In a typewriting machine having a travcling carriage, the combination of a margin stop carrying bar on the carriage of rectangular cross-section having transverse stop-l locking notchesin one face'thereof, and a margin stop mounted on said bar and adjustable therealong, said stop 'comprising 'Y (abutment and locking members each formed I from a single piece-oi sheet metal,v said members having non-resilient Vbody portions of yoke-like form each comprising a flat transverse wall parallel with the notched face of the bar and located at the opposite side of i the bar from the notched face and parallell fiat side walls through registering apertures in which the bar extends, the body portion of the locking member embracing the body portion of the abutment member with the side wallsfcontacting and the transverse walls Y spaced apart7 the apertures in the side walls Y of the abutment member being shaped to prevent transverse movement of said. member u' relatively to the bar and the-side walls there- Y of being too thick vto enter the barv notches, the apertures in the side walls ofthe locking member being shaped to permit transverse movement of the body portion'of said member-transversely of the bar only in a direction Vperpendicular tothe plane of the notched bar face,the free end of one of the side walls of the locking member being adapted to enter Y the bar notches and the free end ofA the other o side-wall of thelocking member being 'bent utward too-rm an abutmentwider than the e barV notches adapted to Ybear against the notched bar face when the iirst-mentioned side wallA engagesV in a bar notch, the non# 35 locking side wall being located at the leading side ofthe stop,V and the transversewall of the locking member being provided with an integral spring tongue bearing against the adjacent face of the transverseiwall of the abutment member between 'the sidewalls ofv the locking member, said spring tongue being. of J-shape and relatively narrow with its shorter arm joining the transverse wall of the locking n "member midway the Vends of onevlongitudinal f edge of the wall and having lateral wings on its free end bent toward and bearing'against said face of the transverse wal-l vof the abutment member atspaced points in line with the stop bar.

50v In testlmony whereof Ihereunto affix my signature.v

EDWIN L.

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