US962121A

US962121A - Type-writing machine.

Info

Publication number: US962121A
Application number: US51354909A
Authority: US
Inventors: Lyman David Broughton
Original assignee: Underwood Typewriter Co
Current assignee: Underwood Typewriter Co
Priority date: 1909-08-19
Filing date: 1909-08-19
Publication date: 1910-06-21
Anticipated expiration: 1927-06-21

Description

L. D. BBOUGHTOR.

TYPE WRITING IAUKIIIB.

AHLIOAHOI nun me. 10. mo.

962,121 Patontbd June 21, 1910.

wtmwow. In vmro 2 UNITED s'm'ras PATENT OFFICE.

TYPEWRITER COMPANY. OF NEW YORK. N. Y.. A

CORPORATION OF NEW JERSEY.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

Patented June 21, 1910.

Application filed August 19. 1909. Serial No. 518,549.

To all whom it may concern:

Be it known that I. Luna l). lltuu'onrun, a citizen of the United Slillt'n. residing in Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in 'lype-lVriting Machines, of which the following is a specification. h

This invention relates to the line-spacing devices of typewriting machines.

wheel lever.

Another feature of the invention relates to improved means for preventing overthrow of the platen, by causing the usual detent to be prom-ed more forcibly into engagement with the line-space wheel at the upon the operation of the line-spacing moment that the linespacntg devices are arrested; said extra pressure of the detent beinflgccasioned by a stop provided upon said do t to arrest said line-spacing devices. I provide for eflecting line atljut-itmentn of the stop, so that the deflll'ttl pressure may be soat the exact point when the detent roll is seated perfectly in a notch in the wheel.

Another feature of the invention relates to improved means for releasing said dctent-so that the latcn may be left free from the control of t to line-space wheel, for irlar line-spacing. ghetfeatures and advantages will hereinafter appear.

In the accompanying drawin Figure 1 is a perspective view of one em itnent. of an invention, showin its application to the Ul iderwood type of rent strike machine, a part of the casing being omitted. Fig. 2 is a side view, parts being .broken away and dotted in to better diaclm-w the construction. Fig. 3 is a detail view of the line-space wheel-operating means and regulator, taken from the side Opposite to thatehown in Fig. 2, the slide being dotted. Fig. 4 is a detail side view of the detent and regulating le- 66 vars, parts being broken away. Fig. 5 is a ttvely into engagement with the line-spacesimilar view showing the detentin released position. Fig. 6 is a nut sectional View, a through the platen axle looking in the directron ot' the arrow, Fig. 2, the line space wheel i being broken awa Fig. 7 is a part secllonnl view througt the pivotal point of the detent lever and rack bar and looking in tho i threctmn of the-arrow, Fig. 4.

I indicates a platen rotatably mounted I by means of an n.\'le l in the ends 2 of a platen frame, the axle being provided with i a notched line-spacing wheel 1 guged by a detent lever 5 pivoted intermediateits ends, as at (3, and yieldingly held in engagement with the wheel by means, of

a spring 7.

slide ti is mounted in one end .of the platen frame, and actuated by the usual e\'el' U, a roll it) areas-ting in guiding the slide. An idle arm lLeonn'ct'ted tosaitl slide is journaled, referably, on the axle 1, and a driving pawl 12 is pivoted thereon to engage the line-space wheel. preferably of elbow-form and is pivoted at the angle of its two arms. The inotion imparted to the slide by the lever is transmittcd to the pawl by means of a link 13, connected to the tail of the pawl in a manner to throw the opposite toothed end of the pawl into engagement-with the line-space wheel. The up iosite end of the link is coltneetcd to the a ide. A returning spring 15 3 normally ent engages idle arm ll attd normally holds a stop It on alidc H against a part of the platen frame.

In operation. the backward throw of the slide H, through the link counts-lion,- will draw the arm 11 and'pawl l2 rearwardly against the tension of the spring to, the pawl taking into the notches of the littespace wheel to partially rotate the latter and the little" connected thereto. The spring 15 tend s to prevent. the idle arm ll front yielding to the rearward pull of the link ltl until the pawl has been turned into engugtanent with the wheel, when the pawl, idle arm and wheel rotate together. To prevent over throw of the platen, the detent lever 5, can t'ying a roll to seat. in the note-lam of the lute-space. wteel, has been pivotally supported intermediate. its ends to the path of an abutment carried by the slide. as shown in Patent No. 907,632 dated lkecmnher 22, 1908. 'l have mounted a stud lt on the spacing wheel actuating tneaps, preferably on the link l3, in po-ition to engage an ad justable stop. as a eorew 17. carried by the detent lever 5, the adjustment of which screw will take up the wear between the actuating lever t) and the slide, atul insure that at, the termination of the throw of the sparing wheel, the deteut lever .shall always be firmly seated in a noteh in the wheel and overthrow prevented, since pressure on the line-spacing mechanism is transmitted to the detent, whereb the latter more tirmly lot-kt: the spacing u teel against movement. The adjustable stop l't' may he tiuely adjusted, to come into play at the exaet point when the detent roll 5" seats )erl'eetly in a noteh in the wheel, or, if desired. a little itt advance of such point. A regulating lever in is journaled, t'or ronvenient'e, on the platen axle aml provided with'a preferably are-sha wd pawl-releasin shunt or tri) it, Htlbtitltlh ttally eoneentric with and a ongstde of the x-riphery of the line-spare wheel, adjacent to the driving pawl 12.

The driving pawl is provided with a )in 20, normally re.-ting upon the trip, the latter provided with an inrlinetl or beveled cam or nose li up which the pin 20 rides, to tin-engage the pawl from the wheel upon the return stroke. ll swinging the regulating lever to caube the trip to extend over more or lens of the path traversed by the )awl, the latter is permitted to engage the till inc-spacing wheel through lens or more of its length of travel and henee the wheel may be rotated to space either one or more lines. A detent arm 21 for the regulating lever :24 may he conveniently pivoted on the same support 6 t thedetent lever 5. undengagul by the same spring 7 that holds and detent' lever J in engagement with the line-space wheel. 'l'his atm '.'l is toothed. "N at 22. to engage a stud 23 on the. regulating lever, the maui atlatioa of the handle :24 of whieh lever wil formthe stud over auetwsive teeth tlgtllltal the tom-ion of-tlte spring. When the stud in seated in tlte l'ront notelt 2:5. the lever 9 will throw the platen three line spares. The next nou'h is med for ad'uatin; for two line apnoea. and the next or a single lin .:-'|t:ti-e. 'l'lun e of the fourth or l'ttll' non-h will now he explained. 'lhe regulating lever.i.-t provided with an arm 2.: to engage a wherehv to tort-e said detent lever away from the line-a-pnrr wheel aml retain it in sneh itto n'l'ttliV position. This arm 25 in pt'el'erah y prm ided with an inelined or eam edge 2?. Wltlt'lt is brought into engagement with the pin "it'- to e:|tn.the detent away from the line-spare wheel. it also lltlrt a dwell portion or edge 27". eonm-ntrie with the-axle l, whit-h engages-t the pin .26. to hold the detont. released (Fig. 5), to leave hoth handa of the operator free. Simultanmualy with this releasing movement, the regulating lever pin 26 on the detent lever It,

moves the trip 19, so that the latter occupies the entire spare through which the driving pawl trave thereh preventing en ment of the pawl tlltt line-spare wheefi fii e sttltl 20 ot the pawl merelv riding hack and forth on the trip I". 'it t the parts in this position the platen can he turned freely by aumipnlating the hand wheel 23. Thus the written lines may he aptltttl. one two or thwe spares apart, or the line-sparing mechani.-.m thrown out of use from any position rand s meing wheel, a ptvotally support tent or the mun-mg wheel, a pivotallv an parted notehed member. a spring for yiel mgly retaining both the detent and notched member in operative pmitiona. and a part on the regulatvng lever engaged by the notched member to retain the lever in adjusted polihan.

2. In a typewriting'maehine, the combination with a platen and a line-a wheel eonnected then-to, of a li etng mode anism including a lever-operated slide. a link eonneeted thereto, an arm emmactad to said link and pivoted upon the platen axle, a driving pawl pivotet upon aaid arm, a stud upon said hnk, and a detent lever for mid spacing wheel, mid ,lever lying in the path of said atnd to he engaget thereby at. the eomplet ion of the line-apaeing operation to force the (latent. more llnnly againstthe rt'nteing wheel to prevent overthmw of the )aten. I 3. In a typewriting machine. the combination with a platen and a line-spare wheel eonneeted thereto. of a linoapueing mechanism ineluding a lever-operatotl.allde. a link eonneeted thereto. an arm mnnected to said link and pivoted u m the platen axle, a driving pawl iivotet u am aanl arm. a dud upon Ntttl lin and a tetent lever tor and -qua-tag wheel. mid lever lytn tn the path of aaid atud to he engaged ttetehy at the eompletion of the line-quaemg-operattth to form the deteut more tirmly agatnat the sparing wheel to prevent overthmw of the tlaten. means being provided for elleetmg line adjustments bet ween said lever aml said stud. to determine the point of arrest of the lino-n aeing devices.

4. n a type-writing machine, the etunbiin which the regulating lever may happen' nation with a platen and a line-spacing wheel for actuating the platen. of a huespacil mechanism inclu ing a lever operated s ide, a swinging arm, a driving pawl actuated thereby for engagement With the wheel, a connection between the slide and arm, an abutment carried by the connection for engagement with a stop, means being provided for etl'ecting fiue adjustments to determine the point of arrest of the linespacing mechanism.

In a typcwriting machine, the combination with a latcn and a line-space wheel for actuating the platen. of a spacing wheel actuating mechanism including a swinging member, a driving pawl actuated thereby for engagement with the wheel, means for operating the swinging member. an abutment carried by said means, and a detent normally engaging the line-space wheel the detent lying in the path of movement of the operating means to be engaged thereby at the completion of the line-spacing stroke, means being provided for-effecting line adzs justments between the deteut and the abutment to determine the point of arrest of tht line-s acingmechanism.

6. n a typewriting machine, the combination with a platen and a spacing-wheel so for actuating the same, of a spacing wheelactuating mechanism including a pivotally supported idle arm, a driving paw carried by the arm and cotipe'rating with the spacing wheel, means for rocking the arm and 85 pawl, and a coiled spring on the axle of the platen and slpacing wheel actusting mocha 'e dingly retain the same at one limit of i movement.

7. In a typewriting machine, the combi- 40.nation with a laten and a spacing wheel for actuating t same, of a spacing wheel actuatin mechanism includi a lever-o rated ali e, and a pawl actua ed there rom and e 'ng the wheel, means being pro- 46 vided an lying in the of the slide or effecting no adj astments to determine the length 0 throw imparted to the spacing whee by its actuating mechanmm 8. In a typewriting machine, the combination wit-h a platen, a spacing wheel for actuating the platen, an a etent lever pivbtally supported intermediate its ends and normally engaging the wheel, of inmate- 5s ing whcel-actuatin mechanism, means heth of movement ing rovided on t e detent lever and enga 2' the spaci wheel-actuating mechamsm or effecting neadjustments to determine the length of throw of the spacing so wheel actuating mechanism.

9. In a typewriting machine, the combination with a platen, a ratchet wheel therefor,

4 and a platen axle, of an actuator, an arm a'winging about the platen axle, a pawl pivss qted upon the arm to engage the ratchet wheel, a link connecting said arm to said actuator, an abutment carried by said link,

, and a detent normally in engagement with said ratchet wheel and engngcublc by said abutment to force the dclcnt against the ratchet wheel.

10. In a typewriting machine, the combination with a platen, a ratchet wheel therefor, and a platen axle, of an actuator, an arm swinging about the platen axle, a pawl pivoted u N) the arm to cngw'e the atchet wheel. a ink connecting said arm to said actuator. an abutment carried by said link, and a detent normally in engagement with said ratchet wheel and cngugalble by said abutment to force the detent a ninst the ratchet wheel; means being provh ed for effecting tine adjustments to determine. the point of arrest of the line-spacing mechanmm.

11. In a typewriting machine, the combination of a ateu, a ratchet wheel therefor, a platen as e, a spring-pressed detent arm normally in engagement with said ratchet wheel, a slide actuated at its forward end, a link pivoted to the rear end of the slide and extendin I forwardly therefrom, a tappet connectei to said link to en age said detent lever and arrest the slide an simultaneously force the deteut into engagement with the ratchet, a pawl having an. upwardly extendingcarm to which the forward end of said lin is connected, and anarm pivoted upon the platen axle; arm.

12. In a ty )ewriting machine, the combination of a aten, a ratchet wheel therefor, a platen ax e, a spring-pressed detent arm normally in engagement with said ratchet wheel, a slide actuated at its forward end, a link pivoted to the rear end of the slide and extendin forwardly therefrom, a tappet conuectet to said link to engage said detent lever and arrest the slide and simultaneously force the detent into engagement with the ratchet, a pawl having an upwardly extending arm to which the forward end of said lin is mnnected, an arm pivoted upon the platel. xle; said pawl pivoted to said am, a regulating lever also pivoted u)on the platen axle extending upwardly am carrymg a finger-piece at its upper end, and an abutment o'r guard upon the Hit: of said re ulating lever, said pawl having a lateral y projecting pin to ride it n and abutment, whereby the awl is heh out of engagement with therate et-vvheel.

18. In a ty writing machine, the combination of a aten, a ratchet wheel therefor, a platen ax e, a spring-pressed detent arm normally in engagement with said ratchet wheel, a slide actuated at its forward end, a link pivoted to the rear end of the slide and extending forwardly themfmngatappet connected to said link to engage said detent 1'0 said pawl pivoted to said @BBJBI lever and arrest the slide and simultaneously force the detent into engagement with the ratchet, a pawl having an upwardly extendiug arm to Wlll(ll the forward end of said 5 link is vonneclvd, an arm pivoted upon the plulen axle; Quid pawl pivoted to sand arm, n regulating lover also pivoted upon the pluton axle extending upwardly and carrying a finger-piers at its upper end, and an m :iliuluwnt or guard upon illl. side. of said reg;-

ulating laver, said pawl lmvi a; laterally pmjecling pin to X'ldfi upon 881d abutment, whereby the nwl is held out of engagement with the mtcliet wheel; said r ulatlng lever having ii can! to engage said detent and 15 force it awn from said ratchet. wheel.

LYMJ N DAVID BROUGHTON.

Witnesses:

W. M. Dyomuum, I-lAiwLn I. ADAMS.