US1485768A - Typewriting machine - Google Patents

Description

A TTORNE YS IN VEN TOR Nib) M. C. CRAWLEY TYPEWRITING MACHINE Filed Oct. 5

March 4 192 i;

Mach 4 1924;

M. C. CRAWLEY TYPEWRITING MACHINE Filed Oct. 5, 1922 5 Sheets-Sheet 2 k R w m 0 m C m0 M ATTORNEYS INVENTOR M1: ATTORNEYS March 4, 1924;

Sheets-Sheet 3 LEV ACHINE March 4, 1924;

M. C. CRAWLEY TYPEWRITING MACHINE 5 Sheets-Sheet A Om 4 INVENTOR Mansfilcidfl BY ATTORNEYS Mamh 4 1924:

M. :3! CRAWLEY TYPEWRITING MACHINE Filed Oct.

1922 5 Sheegg-Shee y Y Q m6 m V5 Wm WW i H J.

. 1 annup wm 'IHH HH 3 w...

Patented Mar. 4, 1924.

UNITED STATES PATENT v OFFICE. I

MANSFIELD o. cRAwLnY, or escrow, .NEW YORK, ASSIGNOR TO nnnqenarx com- PANY, OF LOS ANGELES, CALIFORNIA, A CORPORATION OF CALIFORNIA.

TYPEWRITING' MACHINE.

Application filed October 5, 1922. Serial No. 592,525.

To all whom it may-concern:

Be it known that I. MANSFIELD C. CRAW LE1, a citizen of the United States of America, and a resident of Groton, in the county of Tompkins and State of New York, have invented certain new and useful Improvements in Typewriting Machines, of

' which the following is a specification.

This invention relates to improvements in typewriting machines, and more particularly to. line-locking mechanism therefor, including means for sounding a line-end alarm, effecting a preliminary lockin of the machine, efl'ecting a release, and effecting a *final locking of the machine at the end of a machines such, for example, as the machine shown in my prior Patent No;'1,156,061, dated October 12, 1915. The mechanism illustrated is so constructed that operation of the line-locking means prevents operation of the printing keys and. also locks against operation a power-o erat'ed letter-feed.-

means, a power-operator type-bar actuating means, and a universal key-controlled release means for the type-bar actuating and letter-feeding means.

In the accompanying drawings, wherein the preferred embodiment of the invention is illustrated" i Fig. 1 is a vertical fore andaft sectional view of a typewritingmachine provided with the improved mechanism;

Fig. 2 is a detail plan view of a part of the power-opemted type-bar actuating means;

Fig. 311 front elevation, partly in vertical section showing the line-locking mechanism iii-normal inactive position;

Fig. 4 a detail perspective view, the several parts being-in normal inactive position; Fig. 5 a detail sectional View showing the bell-ringing operation; Figs. 6 and 7' detail sectional -andfront views, respectively, showing the prelnninary line-locking operation; Fig. 8 a bottom plan view of the righthand margin stop and its supporting means;

Fig. 9 a section. on the line 9-9 of Fig. 7

showing the margin stop;

Fig. 10 a detail sectional view showing-the margin-release operation; and

Figs. Hand 12 detail frontand sectional yiews, respectively,.showing the final lockmg operation. v",

The invention has been illustrated in connection with a power-operated typewritin machine having printing. means constructs as shown in my copending application Se- $6 rial No. 577 ,362, filed July 25,1922, Patent No. 1,455,112 of May 15, 1923, and having lcttersfeeding means for the platen carriage constructed as shown in my copending-application Serial No. 588,046, filed September 13, 1922. Only so much of such mechanisms is illustrated and described herein as is necessary toa full understanding of the present invention.

"The main frame 1 of the machine is pro- 'vided with a pair-of transversely extending.

raceway rails 2 cooperating with .a air of transversely-extending raceway rai s -3 on .the rectangular frame of a platen carriage 4 to form races for ball-bearings 5, whereby so the carriage withthe platen 6 thereon is supported to travel transversely of the .mam frame. The type-bars 7., only. one of which is shown herein, are pivotally supported at 8 in a suitable segment ,(not shown) in the main' frame; Each type bar has pivotally held to the heel thereof the forward end of one of a segmental series of couplers or selectors 9 the rear ends of which aread-apted to be raised into thepath of the power-driven, 9c segmental, universal type-bar actuator 10.

Each coupler-.9 is formed at its rear end with a cam 11 which, when the coupler is rocked upwardly by a push-rod 12 connected with the key-lever '13 associated with and coupler,

' is adapted to force rearwardly a segmental 'imiversal trip bar- 14; The several banks ;of printing key-levers are fulcrumed on rods 15 in the mainframe and are guided in and. have their throw limited by, combined guidecombs vand stop- bars 16 and 17 held in the frame. 1

The' arcuate universal trip-bar 14 is 'formed midway its ends with an arm 18 connected by a link 19 with the lower'fr'ee end of a hook or actuator latch 20 pivoted at 21 011 the main frame and normay urged forwardly by a spring 22 to latchmgpos1- crank shaft is connected by a pitman 27 with b actuator-pull-baek ataxia-shaft 25 journalled in bearings 26 on the'main' frame, and said the actuator 10. Trip bar 14 is held to a swinging support 28 pivoted at 29 in the main frame to permit fore-and-aft move ment of the bar, while the actuator 10 is held to swinging supports 3031 pivoted at 32-33 in the main frame to permit fore-andaft movements of the actuator; A motor spring 34 is adapted to drive'the actuator b forward to impel a selected type-bar to the printing point u on rearward movement of tri bar 14 whic moves latch 20 rearward an forces finger 23 out from under arm 24.

A hook 35 pivoted to arm 24 is normally f urged by a spring (not shown) into engagement with a ratchet wheel 36 fixed on one end of a constantly rotating drive shaft 37. Said hook is held out of said ratchet by a cam 38when the actuator is latched in its rear position and also during the forward or working stroke of the actuator butis permitted to engage said ratchet to temporarily couplesh'afts 25 and 37 for the purpose ofpulling hack the actuator to latched position 0 and again storing pon e'r in spring motor 34.

Shaft 37 is continuously rotated while the machine is in use, said shaft being journalled in bearings 39 in the main frame and having a pulley 40 thereon connected by a belt 41 with a pulley 42 on the shaft .43 of an electric motor 44 mounted on themain 1 frame and constantly runningduring ii se of the machine.

A transversely extending raclt45 held to the carriage meshes with a pinion 46 fixed on the upper end of a shaft 47 journalled in a bearing 48 on the main frame. A notched feed wheel 49 fixed'on the lower end of shaft 47 is alternately engaged by two fced-pawls 505 1 carried by arms connected as shown with the actuator 10 so as to rock about shaft 47 during'iore and aft 'movements of the actuator. The pawls are con- 7 trolled by aicain plate 53 in such manner that pawl 50 rotates wheel 49 on the forward stroke of-the actuator and pawl 51 rotates the wheel on the return or back stroke of the actuator, each pawl feeding the carriage onehalf of a letter-space.

he mechanism for controlling the marginal line of the writing at the right hand side of a work sheet will now be-dseribed. The front transverse member of the rectangular carriage frame 4 is provided with a longitudinal slot 54 and a margin stop bar' 55 is rigidly suspended from said carriage frame member parallelwith said slot. Bar 55- is provided along its front edge with notches 56 corresponding with the graduations .of the lettenfeed scale plate 57 which cally v swinging rail" ,71.

A right-hand margin stop 58 is slidably held to bar 55, to move longitudinally of the ar, by means of front and rear hook-lugs or channel flanges 59'and60. A horizontally swinging latch hl, pivoted-on the stop 58 at 62, has its noseinormally held in one of the notches 56 in bar 55 by a spring 63. The stop 58 is adjustable alongthe bar by means of a finger-piece, 64 extending upwardly from latch 61 through slot 54 and movable 0th longitudinally and transversel of said slot. The stop is released by paling forwardly on finger-piece 64 an may then be adjusted to the desired letterspace position by lateralpressure on the finger-piece. A orwardly extending pointer. or indicator arm 65 is formed on the finger-piece 64 and overlies the scale-plate 57. The main body portion ofthe margin'stop is formed with an arm 66 extendingforwardly and downwardly over the front carriageand rovi ed with a shoe 67 the left hand edge 0 whi h is in thesan'ie vertical fore-and-aft plane as the pointed endof the indicatorjarm 65. The'shoe 67 is adapted to successively engage ar ride over a series of three transversely spaced inclinedshoulders or cam surfaces 68, 69 and-70 'on the upper edge of at'ransversely' extendingbar or verti- Shoulders 68, 69, and 70 are located "at progressively higher evels in order from right to left and shoulder 7 O is located substantially midway between the opposite sides of the machine frame. The several cam shoulders are spaced several letter-spaces apart transversely of the machine and control, in con nection with the margin stop, in the order of their location from right to'left, the

sounding of a line-end alarm, a preliminary locking of the machine, and a final locking of the machine after operation of a marginrelease key. l

The bar 71 is pirotall'v held at its left hand end to the front guide rail 2 in front of said rail by means of a pivot screw 72, and the free right hand end of said-bar is bent downwardly and inwardly within the main frame so as to rest loosely on the upper edge of the free forward end of a vertically swinging lever 73 pivotally held to a bracket 74 in the, main frame bya pivot screw 75. A fen'e-and-aft swinging trip-plate .77 is piyotally held at its upperendto lever 73 by apivot screw- 78, and a s ring 76, con nected to bracket 74 and. a, ug 79 on the lower end of the trip plate in a plane at the iao 1 names the lower end of the inclined shoulder 68 is in the same horizontalplane as the lower edge of shoe 67 on the margin stop 58, and a rearwardly projecting pointed nose or cam lug 80, formed on the-rear edge of the tripplate 77, is engaged. over a-lug 81 formed on the forward end of a two-arm bellclapper lever 82 and extending horizontally througha slot 83 in bracket 74 and in engagemcntwith the upper edge of the slot. The hell-clapper lever 82 is pivotally held to bracket 7a by a pivot screw 84$,said lever being formed of light spring metaland having its weighted inner end or' bell-clapper. 85 normally held sligthly spaced from a bell 86 by reason of the engagement of lug 81 with the upper edge of slot 83. The bell 86.

is held to the bracket 74 by one-of the screws 92 hereinafter described. Y

The line-locking bail comprises fore-andaft extending side arms 87-rand88 connected at theig rear ends by a transverse locking bar 89, preferably provided with stiffening flanges projecting rearwardly from the upper and lower edges thereof. A portion of the bail bar 89 and its upper stiffening flange is cut away midway the ends of the bar to provide an opening 90 in which an upwardly and rearwardly inclined cam lug or abutment 91, stamped from arm 18 on trip-bar 14:, is adapted to normally freely reciprocate during movements of the triphar ldby selected type-bar couplers '9. The

' side ar1ns'87 and 88 of the'bail are pivotally held by pivot screws 92 to the brackets 74 and 93, respectively, in the main frame to' rock up and down, and the arm 87 is extended forwardly beyond its pivot 92 under the trip-plate 77. I a 1 An upstandingbail-controlling lever 94 is pivotally held by a pivot screw 95 substantially midway its ends to the bail arm 87 near the forward end of said arm. The lever v 94 is formed at its upper end with a pair of vertically stepped shoulders 96 and 97..the shoulder 96 being located at the rear of and higher than shoulder ,97 A. spring 99, connecting, the upper part of lever 94 with the forward end of bail arm 87, normally tends to rock the upper end of the lever 94 forwardly and hold-a stop lug 100 on said lever against the upper edge of the bail arm, so that shoulder 96- normally lies in the path of downward movement of a laterally bent lug orabutment 98 on the forward edge of trip plate 77. ' Abutments 96 and 98 are normally spaced vertically a distance equal to the extent of downward movement imparted to trip plate 77 by shoe 6'? on the margin stop riding up the cani shoulder 68 on-bar 71, A margin-release key-lever 101' is pivoted intermediate its ends on one of the key-lever fulcrum rods 15 and is guided in, and has its throw a limited by, the key-lever guide- combs 16 and 17. The release key-lever is provided with v a key 102 at its forward end and is formed with an upstanding arm 103 at the rear of its pivot the upwardly and forwardly inclined free end of which loosely engages the rear edge of the lever 94.- below the pivot 95 0f said lever 94. I A compression spring 10-1 yieldably holds the margin-release key lever in normal position.

Operation. 8

end of lever 73. This initial depression of lever 73 forces trip-plate 7? downward causing thev nose 80 thereon to first force lug 81 on "bell-clapper 82 downward to the bottom of slot 83, thus lifting the clapper or bell-striker 85, whereupon as lever 73 approaches the position shown in Fig. 5 (the limit of its movement by cam 68) the cam nose 80 rides off lug 81, trip-plate 7? swinging slightly forward and lug 80 thereon coming to rest onshoulder 96 of lever 94. The forward swinging of the trip-plate releases the bell-clapper lever 82, permitting the clapper 85 to drop and lug 81 to again engage the upper edge of slot 83. Owing to the resilience of lever 82 the clapper 85 may drop far enough to strike the hell 86 a shar'pblow after lug 81 strikes the top of the slot; whereupon the temporarily flexed lever 82 will resume its normal position with the clapper out of contact with the bell. A distinctly audible alarm is thus sounded to warn the operator that a line of writing of the desired length is nearly completed.

Continued travel of the carriage fora few letter-spaces causes shoe 67 to ride up over cam shoulder 69, as shown in Fig. 7, thereby depressing rail 71, lever 7-3, and trip-plate 77 another stcf to theposition shown in F ig. 6. During this second downward movement of the trip-plate lug thereon forces the control lever 94 on the bail downward thus lifting cros-arm 89 of the bail 1 until the front vertical face thereof below the opening engages behind the cam. lug 91, as shown in Fig. 6, thereby preventing rearward movement of the universal trip bar 14-. The power-driven operating means for the type-bars is thus locked against actuation and, as the power-driven letterfeeding means is controlled by movements of the type-bar actuating means, the letterfeed mechanism for the carriage is also locked against'operation. It will also be observed that, as bar 14 cannot move rearwardly, the cams 11 on the coiiplers 9 will prevent upward movement of the couplers in frontof the actuator and also prevent any substantial movement of the .printing key-levers 13. The operator will thus immediately be made aware by the sense of plished by simply depressing and releasing lock is prevented.

ey 102 on the margin-release key-lever 101. The depression of this key causes arm 103 of key-lever 101 to rock lever 94 to thepdsition shown in Fig. 10, thereby carrying shoulder 96 rearwardly from under lug 98 on the trip-plate, whereupon the weight of the channel bar 89 and arms 88 and 87 of the bail at the rear of pivots 92 causes the lockingbar 89 to drop down to. its normal position in which aperture 90 therein" opposite stop lug 91 onthe universal trip bar 14 and shoulder 97 on lever 94 engages under lug 98 on trip plate 7 7.

If, after actuation of key 102, the car,- riage is fed several additional letter-spaces sufiiciently to cause shoe 67 to ride up over can-1 shoulder '70, as shown in Fig. 11, the rail 71 and lever 73 will be further depressed, thus forcing trip-plate 77 downward another step to the position shown in Fig. 12. This additional downward movement of the trip-plate again forces lever 94: downward, thereby again swinging the bail to locking position. and locking the machine.

In the construction illustrated the pointer 65 is so arranged with relation to shoe 67 that it indicates the point on the scale 57 at which the printing point will be when the final docking of the machine takes place, but it will. be obvious that the relation be-' tween the shoe and pointer may be varied so that the pointer will indicate the preliminary locking point, if desired.

By inclining stop lug 91 on the trip-bar l4 upwardly and 'rearwardly provision; is" made for the bail bar 89 to exert a cam ac,-

tion 'on the trip-bar in a direction to force the trip-bar forward to normal position in the event of said bail-bar being elevated'to locking position in rapid writing before the universal trip bar is fully returned by the spring 22 connected with latch 20. Positive action of the line-lock is thus in suredeven invery rapid writing on a highspeed power-driven machine such as that illustrated and writing through the line- Upon return of the carriage for starting a new line, the weight of the parts of the Y bail at the rear of pivots 92, and the ten- 1. In a typewriter, the combination of.

type-carriers, a reciprocable type-carrier ac-= tuator, power means for reciprocating the actuator, type-carrier selecting means, keys for operating said selecting means, means operable by said selecting means controlling said power means to impart a single cycle of movement to said actuator, a travelin paper carriage, means for letter-spacing t e carriage at the key strokes, and line-locking means controlled by the travel of the carriage for holding said power controlling means against operation by the type-carrier selecting means. 1

2. In a typewriting machine', the combination with a traveling papercarriage and a universal key-operated member movable by the keys of the keyboard, of a line-lode ing inembercontrolled by travel of *"e c: riage' and shiftable transversely of the pan of movement of the universal member to hold said universal member against movement by the keys, and means forming coact ing cam surfaces on said members for foreing the universal member to normalposition' during initial movement of the line-locking member to locking position.

3. In a typewriting machine, the combination with a traveling paper carriage and a universal key-operated member movable by the keys of the keyboard, of a line-locking member controlled by'travel of the carriage and shiftable transversely of the. path of movement of the universal member to hold said-universal member against movement .by the keys,and a. stop on the uni-- versal member provided with a cam surface along one edge movable across the path'oi locking movement of the line-locking menr her during movements of .the universalmemher by the keys, said line-locking member being shiftable to a locking position opposite theend of said stop.

4. In a typewriting machine, the combine tion of key-operated type-selecting means, a. single-cycle power means for actuating se lected type to print, a universal trip device normally out of the path of said device,.an

upstanding control lever pivotally held to said locking member and having stepped abutments at its upper end, a traveling res paper carriage, a margin-controlling device" on the carriage, means operable by said margin-controlling device to exert downward pressure on the in her' one of said abutment: at a predetermined point in the travel of the carriage to actuate said lookthe lower one of said abutnients beneath said lever depressing means, and means whereby said margin-controlling device may after slight additional travel of the carriage impart additional downward movement to the lever depressing means to again actuate the sizing member.

5, In a typevvritiug machine, the combination with a machine frame and a paper carriage traveling transversely otthe frame,

oia riglithand margin controlling device having a shoe thereon, a transversely extending rail pivotally held at its left end to the frame and adapted to be depressed at its other end by said shoe, line-end alarm means and line-loelzin means operable successively by said rail W en the rail is progressively depressed, and means for yieldably supportthe free end of said rail. I

In typeivriting machine, the combination with. a machine frame and a paper carriage vtraveling transversely of the frame, of right-hand margin controlling device having a shoe thereon, a transversely errt'endin rail pivotally heid at its left end to the "time and adapted to be progressively depressed at its opposite end by said shoe,i a bell and a striker therefor mounted on the drama, and yieidably supported bell-striker operating means-engaging under said rail and depressible thereby actuate the striker, said striker oper rng means yieldably holding the rail in normal position.

7,, in a typeivriting machine, the combination vvith a machine frame and a paper carriage traveling transversely, of the frame, of a right-hand margin controlling device having a shoe thereon, a transversely e2;-

tending rail pivotally held at its left end to the drama and adapted to he progressively depressed at its opposite by said ashoe, a bell and. aistrilrer therefor mounted on the trams yieldably suppo; Ed bell striker operating means engaging under said rail and depressible thereby tofiaetuate the striker, said striker operating means yield ably iioldin the rail in normal position, and line-inching means operableby addi tional depression or the/hell-strilzer o erating means by said raiito a point elovv striker-actuating position x 8. In a typewriting machine, the combination with a main frame and a paper carriage traveling trrmsversely of said frame, orla transversely extending depremiq ldably supported in the frame ee transversely spaced shoulders thereon arranged from right to leis progressively higher levels, right-hand margin Econ ble rail y having t trolling devicesnounted on the carriage 111 4-- onto ride along said. rail, a bell a stri set, a

line-locking member pivotally supported in the frame to swing up and down, a trip device supported in the frame to move up and down and depressible successively to three different levels by the rail as the controlling device rides successively over the shoulders on the rail, means on the trip device for operating the bell-striker upon the first de pression of the rail, an upstanding control lever pivoted on the line-locking member and having two stepped shoulders the higher one of which is adapted to be engaged by the trip device to depress the lever and shift the locking member to locking position upon the second depression of the rail, and a n'iargin-rclease key-lever connected to swing the control lever to present the lower on the carriage, rail extending transvers be,

of the irame and pivotally held at its le thanol end to the frame to swing up and down, a line-locking member shiftably mounted in the frame, means on the frame yieldab-ly supporting the free end of the railand depressible thereby to actuate the line-locking member at two different points in the travel of the carriage, said rail havingstepped shoulders thereonover which the margin controlling; device is adapted to ride, a control member shittably held to the linelocking member and having stepped sur faces successively engaged by said depremible means for actuating the locking mem. her, and amargin-release key-lever adapted to engage and shift the control member to move one of said stepped surfaces out of engagement with the depressible means. and move the other stepped surface under saiddepressible means.

10. in a typewriting machine, the combination with a machine frame and a platen carriage mounted thereon to travel transverselyofthe frame, of a right-hand margin stop mounted on the carriage, a tea versely ext/ending rail pivotally held at its left-hand end to the frame to swing up and down and having three stepped shoulders on the upper edge thereof arranged at progressively higher levels from right to left,

shoe carried by the stop adapted to ride along the upper edge or": the rail, a line-end alarm. device operable by depression of the hind said tripping member to thereby lock.

the same against release action, and carriageopera-ted means for raising said locking member to looking position.

12. In a typewriting machine embody memes ing poWer-aetuated type-oarrier-actuatin means, a swinging tripping member for sai( power-actuated mechanism adapted to be ac- 20 mated i'earwardly by one of the printing keys for tripping the type-carrier-actuator,

a. locking member adapted to be moved upto a position behind thetripping member to thereby lock it against rearward release 25 movement, cam means for wedging the tripping member forwardly when the lockin member is thus swung to a position behin the tripping member, and carriageoperated mechanism for shifting the looking member to locking position. In testimony whereof I hereunto afiix my signature. MANSFIELD G. CRAWLEY.

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