US1469776A - crawley - Google Patents

Description

M. C- CRAWLEY TYPEWRITING MACHINE Filed July 25 192 5 Sheets-Sheet 1 IN VEN TOR M. A TTORNEYJ Oct. 9, 1923.

M. c. CRAWLEY TYPEWRITING MACHINE l Filed July 25, 1922 unulmmmn 3 Sheets-Sheet 2 Eg TOR 7%. BY46,Q

ATTORNE Y;

Oct. 9 1923.

M. C. CRAWLEY TYPEWRITING MACHINE 3 Sheets-Sheet 5 Filed July 25 ,1922

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, gg M 7? M A TTORNE YS Patented Oct. 9, 1923.

UNITED STATESk PATENT OFFICE.

MANSFIELD C. CRAWLEY, OF GROTON, NEW YORK, ASSIGNOR TO ADDOGRAPH COM- PANY, OF LOS ANGELES, CALIFORNIA, A CORPORATION OF CALIFORNIA.

TYPEVJRITING MACHINE.

Application medinuy 25,

To UN whom /z 'may concern Re it known that l, MANsriELD C. CRAw- Liar, a citizen ot' the United States of America, and a resident of Groton, in the county ot' Tompkins and. Sta-te ot New York, have invented certain new and useful Improvements in '.llypewriting Machines, of which the following` is a tull and clear specifica tion. Y

This invention has relation to mechanism .tor rotating the platen roll Yfor line-spacing, and it is especially adapted tor use in connection with a motor-driven continuously running power shaft journaled in the machine trame, key-controlled means being provided kwhereby power may be taken oli' said shaft to actuate the'line-spacing mechanism, as more fully hereinafter set4 forth.

ln the drawing, Fig.` l is a vertical sectional view ot a typewriting machine showing one adaptation ot my invention;

Fig. 2 is a transverse sectional view of the machine, looking rearwardly.

Fig. il is a 'fragmentary vertical sectional view oit the machine, showing the position ot the parts at the end ot a line-spacing operation;

Fig. l is an end elevation oi the platen and associated mechanism, showing the parts as they appear in normal position, the pawlguard being adjusted tor making a single line space;

Fig. 5 is a view similar to Fig. 4, showing Vbe pawlsguard adjusted for making a double line space;

Fig. C is a transverse sectional view taken through the friction clutch; and

Fig. 7 is a fragmentary perspective view of the clutclroperating means.

Referring lo the various parts by numerals, l designates a countenshatt eX- tending transversely ot the machine and journaled in bearings ll attached to the rear wall of the machine frame, this shaft being adapted to be continuously driven during the operation of the machine, by means of a belt 1Q which is driven by an electric motor L3 supported on the rear wall of the machine. Mounted on the shaft l() is a disklike driving member 14 of friction-slip clutch, this member` being formed of fiber and having its periphery tapered toward one end to torni a conoidal friction surface. 4Member le is rigidly held to the shaft so as to rotate therewith, by means of a pin 14?' flange la adapted to grip the conoidal friction surface of member l/l and cut away at :intervals at 15b to torni spaced gripping portions whose radial edges iunction as scrapers during relative slipping or rotation of the clutch members and keep the conoidal gripping surface ot member lfl tree from'oil and dirt, thereby keeping the clutch in eilic'ient rendition. Y

The slidable member 15-15 of the clutch is adapted to be pressed into engagement with the driving clutch member 14 by means of a. vertical lever 17 having a laterally bent oar pivotally held by a screw 18 to the laterally bent forward end ot an arm 83 extending forward from the plate 19 affixed to a boss on the rear wall ot the machine traine, this lever being oit resilient sheet metal so asy to laterally leX or yield, and being provided with a 'forked upper end 20. AY forwardly bent lug 2l, on the upstanding arm 22 ot a bell-crank lever QQ'pivoted at 23 on a boss on the rear traine wall, is adapted to press inwardly against the outer face of lever 17 at the lower end of said lever 17. The lever 22 is adapted to be rocked on its pivot by a line-space keyf lever 24 whose rear end 25 extends upwardly so as to engage in a notch formed .in the under edge of the outwardly extending arm of said lever 22. With this mechanism, it will be seen that depression ot the ke i carrying end ot the lever 24; Causes lever` 22m-22 to rock the upper end 'l lever i7 outward to press clutch member l5-l5 against clutch member la, thus causing said member 11S-15b to rotate.

Ahixed rigidly to the loose clutch member l5-l5b is a toothed pinion 26 which. is in constant mesh with the teeth of a segment 27 pivotally supported at 28 on an arm 28a extending forwardly from plate 19 to rock fore-and-aft of the machine. The lower end or". the swinging segment is bifureated to form two separated stop-fingers 29 which are adapted to alternately abut against opposite ends of a double-end or duplex rubber bumper or stop 30 supported on the laterally bent forward end of an arm 3l on plate i9. said stop being adjustable foreend-aft:

of the ina-chine by bending the laterally 'extending portion of the supporting arm 31. Pinion 26 is sutliciently long to engage seg* ment 27 in all shi'l'ftedvpositions of clutch member 15. A washer 16 is loosely mounted on shaft between the forked end 20 of clutch lever 17 and the inner end off pinion 26.

The ysegment 27, at 'apoint abovei its pivot, is connected by means of ay linl; 32 to the lower end ol a rock arm the upper endot which is l'ormed integrally with one end y'oit rock shalt 34 of channel form in crosssection and des-irably formed of sheet metal. vThe shaft 34 roclably mounted on -pivots 35 supported on a stationary part Y of the machine frame, Vthe axis oit this roel( 'the parts are in normal position.

shaft being located at a point below and to 4the'rear` of the platen. Atlixed4 to the other end olthe rock shatt 34, and` 4preterably forined integrally therewith, is an vsurface of the roller so that the roller at all times runs square on the [lange while y This tlanffe is a aart ot a .rail 39 which travels with the platen carriage 5i' 'and extenos a'tter described.

transversely ot the machine, sai d rail being as long as 'the maximum-distance o'l" travel oit the ca'rriage,so that in all positions olthe carriage engagement ot the roller 87 with the rail will be maintai ed. The carri'age o? travels transversely ot the machine trarne 58 on suitable bearings 59, The rail is carried by a pair of arms 40 which eX- tend downwardly and rearwardly and are pivoted .on a rod 60 supported at its ends in dependino flanges 41 on ythe carriages, so that the rail 39 is capable of upward and rearward sii/'inging movement relatively to the platen supporti-ng shift traine herein- A hook 42 'formed on the arm 36 extends; upwardly behind the rail llange 38, so as to thereby interlock the rail with the roller 37 and arm 36 and thus Vpawl 44 whose curved forward end is bent inward to provide a tooth 45 positioned to engage in the teeth or 'a ratchet wheel 46 held to one end ot the platen 61 to rotate with Vsaid platen. An upstanding hook 49,l

engaging 'over the pand-44, vassists inguiding the `p'awl in 'its movements and, for the purpose of varying the line-spacing l provide a jpivoted regulating device or .pawlguard 56. Thehool 49 is 4formed on a plate Y anc y62 Vheld to one of the side plates 51 of the line-space pawl normally rests with its tooth 'Y 45 out of engagement with the teeth of ratchet wheel 46. A detent lever' 53 is pivoted at its lower end on plate 51, and a roller 65 on the upper end of said lever is yieldably held against the toothed edge ot' the ratchetwheel by a spring 66 connecting the lever and plate 51 to prevent accidental rotation of the platen, as is usual in linespac'ing mechanisms. Y y

lThe platen shaft 67 is jonrnaled in 'bea-rings in the side plates 51 ofthe shift trarne,V which are pivotally connected to the fon ward ends 0l two pairs of superposed parallel links 525 The two `upygieir links are rigidly connected at their rear ends Vby a sleeve 69 rotatable on a rod T0 Supported in flanges 4lon the side rails of the platen CafrriageAT, while Vthe two lower links' are pivota'll-y 4held at their rear ends to the pivot rod 60V and are rigidly connected byA a rail 71 with which suitable mechanism (not shown) is connected tor moving` theA shift frame and l platen upwardly lor printing upper-case characters. "The side flanges of the carriage are Alnovided with yslots 68 .in which he' platen shalt. is movable up and down in case-shitting' operations. olf case-shift mechanism for actuating the shitt trame is shown in my Patent 1,455,109,

'dated May 15, 1923.

As rail 39 and arm 43 thereon are mounted. ou one of the pivot rods oi the shift frame, it i yill be obvious that the .relation between these parts and arm 36 will not lbe changed by the ,upward movement of the sh-itt traine and platen lto upper-case position. It will also be observed that a line through he pivot 47 of the pawl and its point of support on regulator 50 is substantially parallel with links 52, and that the case-shift movement will not interfere with the proper action ot' the pawl on the ratchet wheel, lt will also 'be noted that arms 40 of the rail arm 36 are soarranged and pivoted as to swing substantially in parallelism so that there is practically no canting action oit roller 37 relatively to the rail flange 138.

The regulating device 50 is shittable to either of two positions, as shoe/'n in Figs. 4

A desirable form and `5, to Adetermine wl'iethe-r the `tooth 45 or pawl 44 shall drop in front of the irsttooth oit ratchet wheel 46 forward lof jhqolg 49, or

in tro-nt et the second .tooth in advance .of

rear edge of pawl tooth 45 with the torward edge of the upstanding shank of hook 49. A'resilient laterally flexible detent arm 72 on the sheet metal regulating device 50 has a portion thereot pressed inward to form a stud 73 adapted to snap in either of two depressions 74 in plate 62 to frictionally hold the regulating device in its different adjusted positions. A lug or limiting stop on plate 62 arrests the swinging movement ot the regulator at the two positions shown in Figs. 4 and 5 to prevent overthrow of the regulator by the operator in adjusting said regulator. The shank of hook 49 is formed with a cam lug 76 on its forward edge, the lower edge of which lug inclines downward and rearward and is engaged by pa'wl tooth 45 duringv the latter part of the rearward or active line-spacing movement of pawl 44. A restoringr spring 77 connects key lever 24 with a stationary 'trame plate 78, said lever being pivot-ally supported on a fulcrum rod 79 mounted in the machine frame. f

Nith the parts in normal position, as shown in Figs. 1 and 2, when it is desired to rotate the platen 61 for linespacing the operator depresses and immediately releases the key on key lever 24. `The downward movement of the key causes the parts to practically instantly assume thepositions shown in Fig. 3. The upward movement ot the rear end 25 of the key lever causes lug 21 on arm 22"L of lever 22 to press inward on the lower end of the clutch shitting lever 17 thus rocking the forked upper end 2O ot lever 17 outward and pressing the .driven member 15 oi? the clutch against the driving clutch member 14. Clutch member 15 and pinion 26 are thereby rapidly rotated to rock segment 27 until its forward vstop finger 29 abuts stop 30, when these parts will be arrested and member 14 will slip or rotate relatively to member 15. This movement of segment 27 causes link 32 to rock arm 33 on the rock shaft 34 forwardly, thus swinging arm 36 on said shaft upwardly and rearwardly. This movement of' arm 36 swings the U-shaped frame 39-40 and the arm 43 thereon upwardly and rearwardly, thus pulling pawl 44 rearwardly, whereupon the tooth 45 of the paw]V will drop oft regulator 50 in front of a ratchet wheel tooth and rotate the ratchet wheel and platen one or more line spaces, according to the adjustment ot the regulator. As tooth 45 moves rearwardly it engages the inclined lower edge of cam lug 76 on hook 49 and isjammed down between two adjacent teeth of the wheel and against the forward edge of the shank of hook 49 at the end of the rearward movement of the pawl, to positively lock the ratchet wheel and platen against overthrow. A coil spring 8O connects pawl 44 with one of the links 52 of the shift trame and serves to snap the tooth of the pawl down into engagement with the teeth of the ratchetl wheel as thepawl is drawn rearward.

The parts will remain in this shitted po sition until the operator releases the key lever 24. Upon release of the key lever 24 a retractile coil spring 54, connecting the lower end of rock arm 33 to an ear carried by the aforesaid plate 19, will restore all the parts to normal position, ready for another operation. The interlocking arrangement between the arm 86 and the rail 39 will ensure the return to normal position of the line-spacing pawl. The rear stop finger 29 on the segment 27 will abut the rear tace of the stop 30 and thus arrest the parts in proper position for another operation. Inasmuch as the operation orn the mechanism is exceedingly quick after the clutch members are brought into contact, it is practically impossible :tor the operator to release the key on the key lever 24 before the line-spacing operation is completed; hence it is desirable that there shall be a slipping action. at some point in the power-driven means. For this reason I have found it highly advantageous to employ a friction-slip clutch and put the same into action by manual torce exerted through the key lever. The clutch shown is practically noiseless in operation. I have found that it requires but very slight pressure to cause the clutch to Actuate thc line-spacing mechanism, and consequently the clutch members readily slip oneon the other. To prevent a too great degree of pressure being brought upon the clutch members through the medium of the key lever, I provide the key lever with a stop lug 55 whichy is adapted to strike against a rigid transverse frame bar 56 supported at its ends on bosses 81 on the side walls of the machine frame, and to still further provide against a too severe thrust on the fric.- tion clutch I make the depending end of the sheet metal lever 17 resilient, so that it will laterally yield when the line-space key is depressed and thus ensure alight, resilient pressure on the slidable member ot kthe clutch. The platen may be freely rotated in either direction by the usual finger wheels 82 on the ends of the platen shalt.

The line-space-pawl 44 is provided with a rearwardly-extending finger-piece 48 for convenience in disengaging the pawl from the rachet-wheel carried by the platen when the platen is rotated by hand `tor line-spacing.

This application is a substitute in part for my previously-tiled copending application Serial No. 310,996, filed July 15, 1919.

What I claim is:

1. In a typewriting machine hai/*ing a rotatable platen mounted on the carriage, means mounted on the carriage for rotating said platen embodying an interlocking- .llO

line-spacing member, a ypower-shaft and amotor ster continuouslydriving it, actuating-means driven from the poweiesha'it rto actuate the linespacing means jon the carriage embodying another intedocking-member, one oi said intedocking-members consistingof a rail extending the length of Ytravel of fthe carriage and the other interlocking-membcr consieting of an arm having continuons interlocking engagement with the aforesaid member, and key-controlled vn'leai'is for connecting the power-shaft to said actuati-ng'mea-ns.

2. In .a typewriting machine embodying a .motor and a shaft driven therefrom, .a f. inechanisr'n adapted to be clutched to said shaft, Grey-controlled 'mechanism for operating iclutch, said clutch beinga ini/tional yone eo as to ada-ptit .to slip, a positive stop for the lineespacing mechanism being provided so that `the clutch will slip after lthe.line-spating mech anismf'is operated'i-lts full throw. n

lun a 'typew-riting machine, continuonsly-driren power-shaft, a triction .clutch on said shaft, yhey-controlled .means :tor operating the line-spacing mechanism from this clutch embodying a pin-ion carried .by one/oi the Vclutch-members and a pivoted segment in constantmesh with said pinion.

1l. ln a typewriting machine, a continuonslydriven power-shaft and key-controlled means for 4operating ythe linespacing mech-- `einem ol themachine from said powcreshaft embodying 'a slip-clutch adapted to be put into operation and held in operation by the fili' manual forceY applied to said lkey, whereby when the line-spacing operation is conipleted beifore'the lr Y 'is released a slippage may occur in the "clutch, a pinion and segment mechanism operated by said clutch, andv means for arresting the movement oil the segment when the dine-.spacing action is completed. p

ln a typewriting machine embodying a vcarriage carrying a rotatable platen, means on the carriage `tor rotating the plate-n em.- bodying a rail extending the length of' travel ol theycarriage and mounted on arms extending upwardly and `forwardly, actuating meansV for said line-spacing mechanism embodying a pivotal A mated `arm extend ing upwardly and if iward'ly in substantial parallelism withthe arms carrying said rail and having continuons interlocking engagement with said ra-il, la continuously-'rnnning power-shaft and amotor for actua-ting'the same, and key-controlled devices forcennectingsaid power-shaft to said yactuating means! c e. 'ln apowerftypewriting machine, a linespacing mechanism and a' stop for arrest ing the'same when it has operated its full Y throw, and power means for operating said mechanism embodyi o' friction-slip dri.f'i-ngelements to permit the loperating-rne 1harnsm S. In awtypewriting machine, poirier-opel.

ated l ey-controlled eline-spacing mechanism embodying a rail on the carriage adapted to be lswung upwardly and rearwardly, and means connected thereto for rotating the platen.

Q .ln a typewriting machine, power-operated ]rey-controlled line-spacing mechanism en'ibodying a rail movable upwardly and downwardly and supported entirely on the carriage, means connected to the railV for rotating the platen, and a device for actuating th-e rail having a rolleradapted to travel along` the rail, and a hook-member for interlocking with the rail, :for the purpose set forth.

l0. In a typewriting machine, a poweroperated key-controlled line-spacing mechanisniv embodying a rearwardly-swinging arm carrying a roller, aV movable rail on the carriage adapted to bev engaged by vsai-d.

mechanism into action, segment adapted to be shifted by the driven member of the clutch Vand proifide-d with a' pair of separated stop-firgers,y and a stop supported'be- ,tween saidlingers, said stop being carried by an arm adapted to be permanently bent for adjusting the stop.

In Ia typewriting machine, Va power! operated line-spacing mechanism embodying a slip clutch, land lreyoneans #for putting said clutch into action embodying a key# lever, an inte rmediateleafer `actuated by said key-lever, and a resilient lever having one end vin lengagement with, said in mediate lever and its other end in engagement with the movable member o'lf the clutch.

le. ln typewriting machine, power-op erated line-spacingl mechanism and key-con` trolled in ans tor putting' the same into action, said mechanism embodying a rockable horizontal shaft supported to the rear of tl e platen and having at one end an arm adapted to actuatc the platen-rotating devices and having a depending arm at its other end adapted to be actuated by power.

'l5` In a typewriting machine, mweractuated line-spacing mechanism, a iiriction-slip clntch it'or puttingthe same into action, keynicans lor actuating this clutch, one member of said clutch being formed of separated edged members for the purpose o'l1w lightly scraping the Yfrictlonliace of the opposite member.

i6. ln a typewriting` machine, power-act ated line-s1 icing mechanism, a friction-slip clutch for putting' the' same into action, keymeans :tor actuating this clutch, one member of said clutch being formed of separated portions having radial edges or the purpose of lightly scraping,` 'the 'friction-'tace oit' the opposite member.

l?. In ,a typewritingr machine, a continu` ousljv--running motorflriven sha'jt arranged transversely at the rear of lthe machine, clntch-inembers ou said shaft, key-lever means 't'or putting said clutch into action, line-spacinr means operated 'from the driven nen 4Jr oli said clutch, and means 'for stopping said line-spacing mechanism when the spacingoperation is completed irrespective oi" the relation oit the clutch-members.

18. ln a typewriting machine having, a traveling carriage carrying a rotatable platen, a power-shaft journalcd at the rear oi the machine, a motor for continuously running said shaft, platenrotating devices on the carriage, mechanism supported on the frame of the machine for operating the platen-rotating devices and having continuous connection therewith so as to be capable of rotating the platen in all positions of the carriage, devices 'for connecting said mechanism with the power-shaft in such manner as to actuate the same, and key-actuated means for putting said devices into action.

19. In a typewriting machine having a carriage carrying a roller-platen mounted on a pivoted ranie capable of up and down movement for change in case, a line-spacing mechanism n'iounted on the carriage embodying a member piyoted co-axially with the pivot of said case-shifting iframe and carrying at its upper end a pivoted pawl adapted to rotate the platen ilor line-spa ing, an actuating mechanism having an up standing member held in constant engage` ment with the inember of the linespacing mechanism, and key-controlled power mechanism 'for operating said actuating mechanism for causing a line-spacing` rotation oi? the platen.

In testimony whereof I hereunto affix my signature.

` MANSFIELD C. GRAl/VLEY.

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