US814739A - Type-writing machine. - Google Patents

Description

y P-ATBNTED MAR. 13, 1906. Y G. H. SMITH.

Y TTYPBWRHLNG MACHINE.

2 SHEETS-SHEET 1.

Inn/ENTER:

- U ,/#fwz NAATNEEEEE:

,PIE ATTDHNEY l110,814,739. PATENTE!) MAR.13, 1906.

' G.. E. SMITH.

TYPE WRITING MACHINE.

, APPLIGATION FILED DBG. 2, 1904.

2 SHEETS-SHEET 2,

7; KM@ E .A37

` H15' ATTURNQ/ To all whom, itmay concern:

' STATES PATENT Aoir-irren.4

TTYPEWRITER COMP .OF NEW-YORK.

Be it known that I, GEORGE H. SMITH, a 1 citizen; of the United States, and a residentl of Evanston, in thel county of Cook and State ot Illinois,ih ave invented certain new and useful Improvements in Type-Writing Machines, of which the following is a specification.

" This invention relates to improvements in f the liner-spacing and Carriaoeretnrningmech- [Q anism of type-iifriting mac ines, the .object of theiinventi'on beingto improve the construe# tion, operation, and appearance oi such mechanism.- i

- The invention consists of theseverallfeadescribed, and particularly defined inthe ap pended Claims.

Inf-.the accompanying(drawings, inv which like reference-.numerals designate like` parts in differentiviews,*Figure 1 is a s ideview of a fragment-Voi a type-Writing machine and of l i l1ne-spaeing and carriageereturning mechanlsni embodying the invention; Fig. 2,` a top .View of this mechanism and of fragments of the platen? and platen-carriage. Figs. 3, 4, and areside Views of the line-spacing and .carriage-returning mechanism7 illustrating its action, the lendof the platen being also shown in each of these i*ieiiis Fig. 6 is a sectional View, on' an nlargedseale, illustrating the -eonstruction of'an adjustahlelgage; and Fig.' 7.,a plan and horizontal section of parts of the mechanism, the vsection being on a plane. con` taining the axis-'of the spacing-lever.

The machine from which the Hdrawings were made isa Densmore type-writing machine; but it isl to beunderstood that'the. invention may be applied tomachines of various forms and styles.

The mechanism of' the invention is atplaten-carriage, which is lchine, the .front portion' of the carriage or :that ywhich contains the platen being hinged o the rear portion or`trucl 2 by a pair oi 4inlis', one of which is the-link 3. (Shown in f Figsi and 2.) A-Eacholi'the'se links is piv- -,oted at itsflo'wer en'd to the truck 2 hy a pin 4 5'iiand is piroted 'at its upper end toone o'ffthe end hars ofthe carriage by astrid '5f *The -stud. 5 extends through'the link and linto a recessloiflnednrajblocli 6'. which is tastcncd Specification of Letters Patent. Application tiled December 2, 1904-' Serial No. 235,211.

tures of construction, combinations, and ar#- i rangements of aparts, which are .hereln'after the rock-slnill't 34, itting in thc part --GEQRGE "HKSMITH, oF/EVANSTON, iLLrnois, AssioN-oa fro onNsMoRE nr, or sraacusn'nnw Yoan, A Conroe-Arron Baitentedf March' 1 3, v1- 906.

'of the recess in the block 6 is'a screw-'threaded stop'pin '9'. 'The stud-5 makes contact either with the-pint) or with. the back of thev resess in the block 6, it being moved from one position to the other whenever the platen is shifted `to provide for upper-case orlower oase writing. The truck of the carriageextends over and into a channehbeam 10, which extends across and is affixed to the frame 1 of the machine," and in this channel-beam are grooves 11, in which fit three wheels'whieh are mounted on the truck., two of these wheels 12 being shownin Fig'. 1. These wheels secure the truck to the beam l0, and they roll in t-he grooves 1l when the carriage is moved hack and forth.

The front 'portion of the carriage or the platen-frame consists of the end bar 13 and 'another similar harconnected at their frontends bj* a bar 14. On the har 14- is secured a, wheel 15, which normally rests on a shift-rail i6, whic-h contains a groove in which the wheel 15 The platenv 1T is mounted he'- tween the end hars of the platen-frame on a shaft 1S, which has hearings in the end hars.. A ratchet-wheel 19 is affixed to the platen, and on the platen-frame is a bracket 20, to which is attached a detent composedof a spring 21 and a roller 22, mounted in bearings on the spring, the roller being pressed hy the spring against the teeth of' the ratchet- Although the mechanism ahovcf described is not Afull)v shown in the' drawings,` its construct-ion and operation will he readil)v understood li" persons familiar with type-writing machines;

The line-spacing and carriage-returning mechanism compriscsa united lever and rock# shalt, a pawl operative on the ratchet 19, and otherdevicescombinedtherewith. Thelerci', including thc handle or crooked part 23 and 23 and tightl)v fastened therein hy a screw is mounted on the end har 125 of thc platenfra'mc, the rock-shaft having 'hearings in thc tubular case 26, which is last on thc hat' 13. On the rock-'shalt 24,h cl\\'ccn vthe part '.LI of vthe levcr and thc casc 2G, isla wheel which and on which are hevcl gear-teeth )Nyhi 2 and 7. A "collar 2f), fastened to thc roch-shalt' afitsrear chd har a set-,screw 3U; [its in'and hcarsoh the i nik by screws' 7 to the truck. -In the front'wall 8 l lOO ner surface of the tubular case, and the rockshaft has another bearing 31 at the front end of the case 26. Within this case is a coilspring 32, whose ends extend into holes 33 and A stud l35 1s formed on the case 26 on the.

left side and near the front ofthe case, and

:vonthis stud and a shouldered screw 36,l formying an extension of the stud, is mounted a awl-carrying arm 37. This arm extends ackward besider the case 26 from the fixed pin or stud 35 36 toward the ratchet 19, the rear end of the arm being preferably over or nearly over the teeth at the front of the ratchet. 0n the front endof this arm is a wheel or hub 38, whichis fast on the arm and on which are bevel gear-teeth 39, which engage with the teeth 23 on the wheel 27.

The pawl 40 is pivoted to the pawl-carrying arm 37 at .the rear end of this arm by a shoulderedscrew 41, which passes through` the pawl and fits in a threaded hole inthe arm 37. The pawl extends downward from the pawl-carrying arm in front of the ratchet" 19 and behind the bar 14- of the platenframe. It has at its lower. end a hook 42 and at its upper end an extension 43. A spring 44, coniinedin a recess between the pawl and the arm 37, tends to turn thepawl on its pivot.- into engagement with the ratchet. On the arm 37 is a device 45, consisting of a screw which fits in a hole in the arm and projects over the extension 43 of the pawl, and on the bar 14 directly in front of the pawl is a block 46, these devices being stops which help to limit the movements of the pawl under certain conditions.

An adjustable gage, which is operative to 'regulate the action of the pawl on the ratchet, vis mounted on the end bar 13 under the case 26. This gage comprises a locking y device on the exterior of the platen-frame and a stop connected withthe locking device and operative on the pawl within the frame. The lockmg device andstop are both fast on a pin 47, Fig; 6, which extends through and has a bearing in the bar 13. On the left end of this pin is an arm 4S, to which is allixed a stop-pin 49, which extends underneath the extension 43 of the pawl 40. To the right end of the pin 47 an arm 50 is fastened by a screw 51, and on this arm next to its rear end is a hollow hubv52, which is fast on the arm and on which is a loose-fitting cap 53. A bolt 54, which extendsv through and fits loosely in the head of thehollow hub 52, is fastened at its outer end tothe head of the l cap 53, and between the head of the hub 52 and the enlargement on the bolt is a coilspring 56, whlch 1s compressed endwise. The

. and 3.

bar 13 contains three holes 57'," in which `the bolt 54 fits, and when the bolt. is in. one of these holes the stop-pin 49 is locked in one of ighest position, which is indicated in Figs. 1

Itis in a lower position, which is indicated at Fig.` 4,'when the bolt 54 is in the next hole in the bar 1.3, and the stop-pin'is in its lowestposition, which is indicated in Fig. 5, when ,the bolt is i-n the lowest of thezholes 57. The position of the stop-pin may be changed b vpulling the cap 53 outward until the bolt 54 is withdrawn from the bar 13, and then turning the lockingl device, together with the pin 47, arm 48, and stop-pin, on the axis of the pin or shaft 47 and enabling the' spring 56 to push the bolt into another hole 57 in the end bar 13. The arm 50 of the lock- `ing device contains a curved slot 5S, in which is a pin 59, which is fixed in the bar 13 and with which the upper end of the slot makes` contact when the bolt '54 is withinor in front of the lowest hole 57.

The stop-pin 4 9 is to be locked in its highest position when it is desired to impart a single line-space movement to the platen. ln that position the stop-pin coacts with the block'46v on the bar 14in supporting the pawl 40 at the rigl'rt 'elevatioirwhen the parts'of the mechanism are'in their normal positions. as they are shown in Fig. 1.4 Thon the .pawl bears against the 'block 46, and the extension 43 of the pawl rests on the stop-pin 49. ll' the line-spacing lever is now actuated by pulling the handle of the lever toward the right of the machine, the rock-shaft 24 turns on its axis, the bevel-gearing acts on the pawlwau rying arm 37, whose inner end rises, and the pawl is (.lrawn upward bythe pawl-carrying arm. As the 'pawl ascends its lower end is advanced to the ratchet by the'action of the pawl-spring 44, and the ratchet and platen are then turned by the pawl, the movement of the platen being that required to produce a single line-space and being-completed when the parts of the mechanism are brought to -the positions in which they appear in Fig.4 3.

At the end of thisspacing movement or of either of the two others which may be produced with the mechanism described, one of' these aording two line-spaces and theother three line-spaces, the extension 43 of the pawl makes contact with vthe under vside of the stop 45 on the arri),l 37, andthe pawl is prevented from ascending farther by the coaction on it of the arm 37, stop 45, and ratchet -19'. The carriage may then be drawn from left to right by pullingvon the spacingleve1, the platen being meanwhile kept from turning in either direction by the engagement `of the pawl with the ratchet. The line-spacing lever and the parts of the mechanism connected therewith. are restored to their non. mal positions by the actionof ,the restoring IOS IZO

ring 32 on the rock-shaft 24. The lower p s vspring-inessed `pawl pivoted to said tlxe'rear end olthe arm-and extending thence do\\'|r\va1"tl in front of the ratchet, an adjust-- able gageoperative toregulate the action of end of the pawl is withdrawn from the ratchet A- by the downward action' 'of the arm 37 on the 'pawl and that of the exte'nsion'43 of the paw] 'on the stop-pin 49 of the adjustable gage, the forceexerted by the spri g 32 being great enough ,to further depressthe inner end of the arm 37 after the extension 43 reaches the stoppin-19, notwithstandingl the additional resistance olferedA 'by the pawl -spring 44. When the'pawl makes' contact with thel stop 46, furtlrer'motion cannotbe imparted to it 'or tothe other parts ol` the mechanism by the restoring-spring-32. A

From the foregoing description it will be understood that when the adjustable gage is locked in the position indicated in Fig.4 the pawl will be movable by the spacing-lever far enough "torimpart to the platen a movement 'of tivo line-spaces and that a movement of .three line-spaces may bev produced when the gage is. locked in the position in Iwhich it appearsin Fig. The pawl makes contact with the spring 21 instead 'of the stop 46 when the gage is adjusted to provide for a three-line movement andivhen the pawl is in itslowest position.` l

Yarions changes'` ma3Y be made in the mech-` anism 'described without depart-ing from the invention. f

nCerta in feat uresoic invention herein shown .and described are not claimed, the same being the invention of Oscar Toodvvard and claimed h v: him in his application liled Feb-- rn'ary 5, 1906, Serial No. 299,536.

What l claim as new, and desire to secure hv LettersPatent, is-' i l, lnatLvpe-ivriting machine, the combi- 'nation\vitl1:tl1e platen and platen-carriage 'ol' a ratchet-Wheelz-on the platen, a line-spacing lever including a rock-shatt mounted. on the platen-carriage, the axis of the rock-shaft heil-1g'higher-thanthat of the platen, a pawlcarrying.'armmounted on a tixed pin and extending backward from said pin toward the 'ratchet on one sideot the rock-shaft, means connecting' the rock-shaft 'with said pavvlcarrving'arm at theft-ont end of said arm,a

the paw] on the ratchet ,and a restoringspring'-,.operative onfzthe 'spacing-lever and paxvl-caIrving arm,

lna type-writing machine, the combii nation with the platen 'andl platen-carriage 'ol aA ratchet-'wheel o'n the platen, `a line-spaclrmg lever including a rock-shalt mounted on the iilaten-carriage, the axis of" the rock-shaft vbeing lnglleruthan'that ofthe'platini, a:pa\vlcal-'r \f.mg:iarmmounted on a fixed pnn and cxtcn'ding hackniind .from-isaid pii-lktowa-rd ythe `ratclwto'n one 'side ol therock-shaft.; ni'eans `connect lng allie. rock-allait nith said, paxvlarm at ing leverl including a rock-shaft mounted on the platen-carriage, Pthe axis' ot the rock-shaft carrying arm mounted on a fixed pin and exratchetA on one side of the .rock-shaft, means connecting the. rock-shaft with said pawlcarrying'arm at the'tront end of said arm, a spring-pressed pawl pivoted to saidv arm 'at the rear end ofthe arm and extending thence downward in front'of theratchet, an' adjustable gage operative to regulate the action'of the 'pawl on the'ratchet, a stop cooperative with the pand-carrying arm and the `ratchet to limit theupward movement of the pawl, and a restoring-spring perat-ive'on the spacing-lever and pawl-carrving arm.

4. In a type-Writing machine, the combination with the platen and. platen-carriage of a ratchet-wheel on the platen, la line-spacing lever including-arock-shaft nunmted on the platen-carriage, the of' the rock-shaft being higher than that ot the platen, a pan'lcarrying 'arm mounted on a fixed pin and extending backward from said pin toward the ratchet on one side of the rock-shatymeans connecting the rock-shaft"with saidcpandcarrying arm at tliefront end otsaid spring-pressed pawl pivoted to said arm at the r'ear end otl the arm and extending vthence able gage operativetovl regulate the'action ol tpavvl-carrying arm and cooperative with said arm and the ratchet to limit,theupward movement of the pawl, -an'tla 'restoring-springoperative on the spacing-lever and pawl-carrvmg arm.v y v 5. In a type-writing machine, the combination with the )laten and' ph'tten-carriage ot a ratchet-Wheel on the platen, a line-spacing lever including a rockshalt mounted on the platen-carriage, the axisof the rock-shaft being higher than that of thtfplatci'i, a pawl- 'farrving arm mounted on a fixed-pin and extending l. ack\\.ard fromsa'id pin toward the ratchet `on one side of the rock-shaft, means connecting the rock-shaft `with said pasvlfcarnving'arm at the front end of said arm','a Vvsnri:1g-Dressed. Daivl bivo'ted to' said arm'f'at the rear end ot' the arm and cxtemling thence downward in tn-nnt oft the ratchet, an adjusttending backward from said pin toward' the being higher than thatof the platen, 'a pawl- 4 arm', a i

downward in front of thev ratchet, an adjust'- the pawl on the ratchet, a stop allixed to the i IIS -of a ratchet-wheel on the platen, a line-spacing lever including a rock-shaft mounted on the platen-carriage, the axis of the rock-shaft being higher than that of the platen, a pawlcarrying arni mounted on a fixed pin and extending backward `trom said pin toward the ratchet on one side of the rock-shaft, means connecting the rock-shaft vwith said pawlcarrying arm at thefront end of said arm, a spring-pressed pawl pivoted to said arm at the rear end of the arm and extending thence downward in front of the ratchet, an adjustable gage operative to regulate the action of the awl on the ratchet, a stop atlixed to the paw -carrying arm and cooperative with other par-ts of the mechanism to limit the upward movement of the pawl and to lock the platen in the desired position, and a restoringspring operative on the spacing-lever and pawl-carrying arm..

7 In a type-writing machine, the combination with the platen and platen-carriage of aratchet-wheel on the platen, a line-spacing lever including a rock-shaft mounted on the platen-carriage, a pawl-carrying'arm mounted on a fixed pin, means connecting the rockshaft with said pawl-carrying arm, a springpressed pawl pivoted to said arm, a restoringspring operative on the spacing-lever and pawl-carrying armand an adjustable gage operative to' regulate the action of the pawl on the ratchet, said gage comprising a locking device on the exterior ot the carriage-frame,

a pawl-engaging stop, and a pinto which said locking device and stop are attached, this pin having a twarring in the carriage-frame and being movable on its axis by means of said locking device.

8. In a type-writing machine, the combination with the platen and platen-carriage of' a ratchet-wheel on the platen, a line-spacing -lever including a rock-shaft mounted on the platen-carriage, a pawl-carrying arm mounted on a fixed pin, means connecting the rockshaft with said pawl-carrying arm, a springpressed pawl pivoted to said arm and extending within the carriage-trame, a restoringspring operative on the spacing-lever and pawl-carrying arm, and an adjustable gage operative to regulate the action ot' the pawl on the ratchet, said gage comprising a locking device on the exterior oi' the carriageframe, and a stop connected with said locking device and operative on the pawl within the carriage-frame.

9. In a type-writing machine, the combination with the platen and platen-carriage ot,

a ratchet-wheel on the laten, a line-spacing lever including a rock-sliaft mounted on the platen-carriage, the axis of the rock-shaft being higher than that of the platen, a pawlcarrying arm mounted on a iixed pin and extending backward from said pin toward the ratchet on one side of the rock-shaft, meansgconnecting the rock-shaft with said pawl-carrying arm at the front end of said arm, a spring-pressed pawl pivoted 'to said arm at the rear end of the arm and extending thence downward in" front ofthe ratchet, a restoring-spring operative on the spacinglever and pawl-carrying arm, and anadjustable gage op'erative on the pawl within the carriage-frame.

10. ln a type-writing machine, the combination with the platen and platen-carriage 4vof a ratchet-wheel on the platen, a line-spacing lever including a rock-shaft `mounted onthe laten-carriage, the axis of the rock-shaft being higher than thatof the platen, a pawl,- carrying arm' mounted on a fixed pin and extending backward from saidpin toward the ratchet on one side ,of the rock-shaft, means connecting the rock-shaft with said pawlcarrying arm at the front end of said arm, a spring-pressed'pawl pivoted to said arm at the rear end ofthe arm and extending thence downward in front of the ratchet, and pro- -lever and pawl-carrying arm, and an adjustable gage operative on said extension of the awl. p 1l. ln a type-writing machine, the combination with the platenfand platen-carriage of a ratchet-wheel on the platen, a line-spacing lever including a rock-shaft mounted on the platen-carriage, a pawl-carrying arm mounted on a'iixed pin and extending backward from said pin toward-the ratchet on one side IOO of the rock-shaft, means connect-ing the rockshaft with said pawl-carrying arm at the front end of said arm, a spring-pressed pawl pivoted to said arm at the rear end of the arm and extending thence downward in front of the ratchet and provided at its upper end with an extension, a restoring-spring operative on the .spacing-lever and pawl-carrying arm, and an adjustable gage comprising a locking device on the exterior of the carriage-frame, and a stop connected with said locking device and operative o n said extension otl the pawl.

12. ln a type-writing machine, the combination with the platenj and platen-carriage of a ratchet-wheel on the platen, a line-spacing lever including a rock-shaft mounted on the platei'i-carriage, a pand-carrying arm mount-A and extending thence downward in front of .the ratchet and'providedat its upper end ativeon the spacing-lever and pawl-carrying arm, and-an adjustable gage comprising a sto underneath said extension of the pawl an means for securing this-stop at different elevations. j

13. (In a t e-'writing machine, the lcombination with t e platen and platen-carriage of a ratchet-Wheel on the laten, a line-spacing lever including a rock-s aft mounted on the platen-carriage, the axis of the rock-shaft be- :mg higher thanthat of the platen, a pawl- -With an extension, a restoring-,spring opercarrying arm mounted on a fixed pin and extending backward irom said pin toward the ratchet on one side of therok-shaft, means connecting the rock-shaft with said pawl-carrying arm at the front end of said arm, a spring-pressed pawl pivoted to said arm at the rear end ofthe arm and extending thence downward in frontof the ratchet and provided at its upper end with an extension,. a restoring-sprin' operative on. the spacin lever and pawcarrying arm, an adj'ustab e gage operative to regulate the action of the pawl on the ratchet, and a stop on said pawlcarrying arm above said extension of the pawl, said stop being cooperative with the ratchet to limit the upward movement of the pawl.

14. ln' a ty e-writing-machine, the combination with tde platen and platen-carriage of a ratchet-wheel on the laten, a line-spacing lever including a rock-s aft mounted on the platen-earria e, a pawl-carrying arm mounted on a xe pin and extending backward from said pin toward the ratchet on one side of the rock-shaft, means connecting the rockshaft with said pawl-carrying arm at the front end of said arm, a spring-pressed pawl pivoted 'to said arm at the rear end 'of the arm and extending thence downward in front of the ratchet and provided at its upper end with an extension, a restoring-spring operative on the spacing-lever and pawl-carrying arm, a stop on said paWl-carrying arm above said extension' of the pawl, and an adjustable gearing this sto at di erent elevations.

gage com rising a stop underneath said exi tension o the pawl and means for securing` 15. n a type-writing machine, the combination withtlie platen and platen-carriage of a ratchet-wheel on the platen, a line-spacing lever, including a rock-shafthaving bearings vin a tubular case fast onthe carriage-frame,

higher thanl the axis of the rock-shaft being that of' the platen, a restorin -spring confined in said case and-connected with the rockshaft, a pawl-carrying arm mounted on a pin aiiixed'to said case, said arm extending backvward beside the case from said pin, bevelgearin connectinCr the pawl-carrying arm with t e rock-sha t, a spring-pressed pawl pivoted to .the rear end of said pawl-carrying arm and extending thence A, downward in front ci the ratchet, and an adjustable gageoperative to regulatethe action of the pawl on the ratchet.

nation with t a ratchetwheel on the platen, a line-spacing lever, including a rock-shaft having bearings in a tubilarcase fast on the carriage-frame,

- c 16. In a t e-Writing machine, the combie platen and platen-carriage of 7o' the laxis of the rock-shaftibeing higher than I SeA Signed at Chicago, in the countyof Cook and State of Illinois, this 25th dayof November, A. D. 1904.

GEORGE H. SMITH'. Witnessesz' A. LAUFFS, J NE1L.

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