US2350773A - Device for automatically inserting and adjusting sheets of paper in typing or printing machines - Google Patents

Description

June 6', 1944. w. KNIEHAHN ETAL DEVICE FOR AUTOMATICALLY INSERI'ING AND ADJUSTING SHEETS OF PAPER IN TYP-ING-OR PRINTING MACHINES 1s Sheets-Sheet 1 Filed Nov. 25, 1940- Z r I 4 3f 9 5/ m LN II n WW5;

7|1|||l IIIIIII IIIIIII! r l 1 I 1 I 1 lll llllllllllllllll June's, 1944- w. KNIEHAHN, ETAL 0, DEVICE FOR AUTOMATICALLY I'NSERTING' AND ADJUSTING SHEETS OF PAPER IN TYPING QR PRINTING MACHINES Filed Nov. 35, 1940 '15 Sheets-Sheet 2 m o a 'q "3 Y a Q "KL ,5 a 81 I: v w vrw' N 0% 2 I. A 35 1 's L l -xm =1 -l' M a p m 1 ezlser Q: 1256/2127 7 2&erd/o .w. KNIEHAHN ETAL 2,350,773

June 6, 1944.

DEVICE FOR AUTOMATICALLY INSERTINC- AND ADJUSTING SHEETS OF PAPER IN TYPING OR PRINTING MACHINES 13 Sheets-Sheet 3 Filed Nov. 25, 1940 June 6, 1944.

w. KNIEHAHN ETAL 2,350,773 DEVICE FOR AUTOMATICALLY INSERTING AND ADJUSTING SHEETS OF PAPER IN TYPING OR PRINTING MACHINES l3 Sheets-Sheet 4 Filed Nov. 25, 1940 a a Q a H J J r 5: a. N2 3 m W. IJ\QQ 6 g 8 W 8, U S a. 3 a was .3 v 1 a i a. x w a \A June 6, 1944. w. KNIEHAHN ETAL 2,350,773 DEVICE .FOR AUTOMATICALLY INSERTING AND ADJUSTING SHEETS OF PAPER IN TYPING- OR PRINTING MACHINES Filed Nov. 25, 1940 13 Sheets-Sheet 5 65 5 Fl"; l

1 I 1 LI i1 l I I l I! QJW June 6, 1944. w. KNIEHAHN ET AL DEVICE FOR AUTOMATICALLY INSERTING AND ADJUSTING SHEETS OF PAPER IN TYPING OR PRINTING MACHINES Filed Nov. 25, 1940 13 Sheets-Sheet 7 I l 1 TH 2122 June 6, 1944. w. KNIEHAHN ET AL 2,350,773

DEVICE FOR AUTOMATICALLY INSERTING AND ADJUSTING SHEETS OF PAPER IN TYPING 0R PRINTING MACHINES Filed Nov. 25, 1940 13 Sheets-Sheet 8 Fig. 15

June 6, 1944. .w@ KNI EHAHN ETAL I 27,350,773

DEVICE FOR AUTOMATICALLY INSERTING AND ADJUSTING SHEETS OF PAPER IN TYPING OR PRINTING MACHINES Filed Nov. 25, 1940 13 Shee ts-Sheet 9 M a a v a a 1 0 m 1 I r Iv v \m June 6, 1.944. W.KNIEHAHN arm. 2,350,773

DEVICE FOR AUTOMATICALLY INSERTING AND ADJUSTING" SHEETS I OF PAPER IN TYPING OR PRINTING MACHINES Filed Nov. 25, 1940 1s Sheets-Sheet 1o .591 m 342 r,- 51,, J50 307 304 E i m an, i asa 5 ass 3.77%" I 344; 35

J12 .m m g 52 V m 313 3% a m 343 g a "328 m 361 3+5 A $1 m I a ass K aw '1 m 3 w ////1//////// /1 ///A 2:3 21 22 June 6, 1944. w, KNlEHAHN AL 2,350,773

DEVICE FOR AUTOMATICALLY INSERTING AND ADJUSTING SHEETS OF PAPER IN TYPING on PRINTING MACHINES Filed Nov. 25, 1940 13 Sheets-Sheet 1].

farm/ June 6, 1944. w, KN|-EHAHN ETAL 2,350,773

DEVICE FOR AUTOMATICALLY INSERTING AND ADJUSTING SHEETS OF PAPER IN TYPING- OR PRINTING MACHINES Filed Nov. 25, 1940 13 Sheets-Sheet 12 427 3 429 Q 557 m m m 423 '9 +22 424 26 L J40 I i j j I baa/561.,-

Zerz June 6, 1944. w. KNIEHAHN ETAL 2,350,773,

DEVICE FOR AUTOMATICALLY INSERTING AND ADJUSTING SHEETS OF PAPER IN TYPING OR PRINTING MACHINES I Filed Nov. 25,- 1940 1s She' ets-Sheet 1s Patented June 6,1944

DEVICE FOR AUTOMATICALLY INSERTING AND ADJUSTING SHEETS OF. PAPER IN TYPING OR PRINTING MACHINES Werner Kniehahn and Hans Dietrich Geiser,

Chcmnitz, Hugov Schiller, Siegmar-SchOnau, Rudolf Gerth, .Wittgensdorf, near Chemnitz, and Raimund Witt, Chemnitz, Germany; vested in the Alien Property Custodian Application November 25, 1940, Serial No. 367,134 In Germany November 29, 1939 10 Claims. (01. 197-127) The invention relates to a device for automatically inserting and adjusting sheets of .paperin typing or printing machines which are equipped with a number of actuating elements for the desired positioning of the paper sheets to be in-;

serted. v V By such arrangements sheets of paper are to be pushed forward from the front side of the typing. or printing machine, for instancatto a position in front-of sheets already previously insertedand wound about the platen, and certain lines of the paper sheets are to be brought into position for typing.

The invention has for its object to ensurean automatic easy insertion of the sheets of paper securely and rapidly and with as little manipulation as possible. The invention consists in that each actuating element is in operative connection with means for starting the drive and for initiating the inserting movement of the device and with limiting elements adapted to be adjusted into and out of the effective position, so that when an actuating element is actuated the drive of the device is started and the inserting movement initiated, and alsothe means are brought into operative position which automatically interrupt the inserti-ng movement when the paper sheets have reached the adjusted position corresponding to said actuatingelement. v fieveral embodiments of the invention in application to a typewriting machine ar illustrated in the accompanying drawings, in which v, Fig. 1 shows in frontv'elevation one form construction, 1

Fig. 2 is a top plan View of Fig. 1, Fig.3;shows the construction of 'a selectin and driving device in elevation and partly in section, Fig. 4 is a part section on line 4-4 of Fig. 3, Fig.5 is aside elevation of the arrangement shown in Fig. 3 partly in section on line 5-'5, Fig. 6 shows a detail of the selecting arrangement, Fig. 7 shows another detail, v Fig. s shows in front elevation a second embodi .mentofthe invention on a typewriting machine, Fig. 9 isa part side elevation of Fig. 8 on larger scale, Y y Fig. 10 shows a ofFig.9, v v v .h 'Figsvll; and 1 2 are elevations of a gear con- ..lie u 7 ,7 V .Figs. 13 and 14 show two .Ciiiferent forms ofcon- --stru ct ion of another gearconnection,

detail in section on line 10-10 of the selecting dividual elements of the Figs. 15 and 16 show in two elevations a looking device for the conveying rollers,

Fig. 17 shows in side elevation another embodiment of the invention mounted on a typewriting machine, 7 1 I Fig. 18 is a top plan view of Fig. 1'7,

Fig. 19 shows a key arrangement of. the device shown in Figs. 17 and 18, I

Fig. 20 is a vertical longitudinalsection through the rear part of a selecting device of other construction, l

Fig. 21 is a section on line 2|2l of Fig. 20, Fig. 22 is a section on line 22-22 of Fig. 20, Fig. 23 is a section on line 23-23 of Fig. 20, Fig. 24 shows a. detail of Fig. 20 in diagrammaticview, v l

Fig. 25 is asection through; the rear lower part arrangement on line 25 --25 of Fig. 33,

Fig. '26 is-a section on line 25-26 of Fig. 25,

Figs. 27, 28,-2.9 show different positions of inarrangement according to Fig. 25, I

Fig. 30 is a section on lin 3il30 of Fig. 25,

Fig. 31 is a side elevation of a key arrangement, Fig. 32 is a top plan view of Fig. 31,

Fig. 33 shows in side elevation the rear part of a typewriting machine and of the selectingdevice on an'enlarged scale,

Figs. 34, 35, 36 show a detail according to Fig. 33 in difierent operating positions. 7

In the figures of the drawings only those parts of the typewriting machine areshown which are essential for the present invention. This type- 'writing machine is equipped as usual-with a paper carriage shiftablein longitudinal direction on the machine frame; The paper carriage consists in known manner of a main carriage frame part and of a case shift frame. ,Tne'part chiefly consists of the stationary frame l.

The case shift frame is formed chiefly by two side plates 3 and t rigidly connected the one with the other near the lower ends by. a cross-stayit In the case shift frame the platen 2 is rotatably mounted. Two paper guides l, 8 for thepaper sheets to be placed around the platen 2 are provided underneath the platen 2 on the case shift frame of the paper carriage. The paper guides may be equipped with guide rollers 9 for the paper; The paper guides can be swung away from and against the platen 2 by means of levers'lll, H fast on a connecting shaft 12. The paper guides 1, 8 extend towards the rear around the platen 2'and continue upwardly behind the platen to form a paper. tableor carrying plate 13 for the paper sheets. The case shift frame of the paper carriage vertically extending, hollow casings 2|, 22, for

the gauge pins I5 and I6. The frame I4 may be arranged so that it can be oscillated away from and toward the paper carriage about the pivots I! and I8 provided on arms I9, which have corresponding bores. In its position of rest shown in Figs. 1, 8 and 9, the frame I4 rests with the ends of the pins I5, I6, which are resiliently held by springs accommodated in casings 2|, 2,2 as, indicated in Fig. 9 and pressed downwards, on parts 23, 24 of the main carriage frame 'I of the paper carriage, said parts being adjustable for instance by means of screws. When, the frame I4 rests on the paper carriage, the pins I5, I6 are pressed into the casings 2|, 22' by theweight of the frame and of'theelementsmounted on the same, sothatthe cushioning springs (unnumbered) encircling the pins I5 and IB-Within'their respective hollow casings I9 and 20, will-*be placed under tension. These springs serve to balance asfar as possible the weight of therocking frame I4 and of the elementsonsa-id frame,

order that at the case shifting of the typewriting machine, for instance fortyping capital characters, the lifting of frame I4 is facilitated.

Paper guiding means 26, 21, 2-8 constituting a front feed paper chute, are arranged on the transverse carrier or cross stay 25 onframe M, as shown in Fig: -2; and form a'funnel for the paper sheets S to be inserted. The two angular'paper guides 25 and 21* are guided, shiftablei'nlongitudinaldirection, on thecross stay 25 by means of slidable pieces 29, and can be secured by means of screws 3I, 32 in anydesiredposition as corresponds to the width of the paper-sheets to be inserted. The paperguide bar 28 extendsover the whole width of frame I 4 and constitutes a part of the means for facilitating the insertion of paper" sheets. -'I-'-he--ba-r- 2-8'is preferably made of transparent materialinorder that the matter "formerly typed on thepaper sheets held in the machine remainsvisible as muchas possible. during the typing of other lines or only a'portionof bar-28, for instance the upper portion, maybe made of transparent material.

A shaft 33, journaled in frame I4 underneath the paper guidingelements 26, 2-1, 28, carries 'several feed rollers 34. I These feed rollers 34- extend throughrecesses 35 inthe lower portion of the paper-guide bar 28- and cooperate with feed rollers 36- mountedon a shaft 37 parallel to shaft 33, the ends of said shaft 33, Fig. 9-, being jour- " naled inarms 38, 39. The shafts 33 and 31 are arranged parallel-to the axis of the platen 2. The arms 38, 3-9 areoscillatably mounted on the By turning bymeansof a handlea shaft-44jour- -naled in the frame I4- above thefeed rollers 34, 36, said shaft acting simultaneously on both arms 38, 39 by means of cam-like parts, t e arms-38,

-39. canbeswung back against. the action of springs 42, where-bythefeed rollers 34- are lifted .ofi'stherollersjfir V q The shaf=t33is extended beyond its right hand bearing, as. shown. in Figs, .1 and 2; and carries "7.5

from: the other clutch-sleeve.

on its right hand end a bevel wheel 46 which meshes with a bevel Wheel 41, Figs. 1, 2 and 3.

The bevel wheel 41 is driven, through the intermediaryv of a shaft 48, as shown in Fig. 3, a bevel wheeI49, a large bevel wheel 50 and a bevel wheel 5I, shown in Fig. 4, by means of a clutch 52 and bevel wheels 53, 54 from an electromotor 55 or from another source of power the number of revolutions of which can be transmitted into slow rotation by agear, not shown, for instance a worm gear, accommodated in a casing 56. If

' shaft 33 is driven from the electromotor 55 by the gear elements stated above, the feed rollers 34,

into the paper guiding funnel 26, 21, 28 is gripped by the rollers and inserted into the machine, until the electromotor 55 is stopped and thereby the inserting movement is interrupted. In order that the paper sheets can be inserted into the machine to a predetermined point, for instance to a certainline, a selecting arrangement is provided by which the just mentioned problem can be. solved.v r

. In a casing-51,.shown in Figs. 3 and- 4, which is fixed by means of connecting parts 558, 558 for easier attendanceof the device preferably at the right handside, on frame I4, or may even formthe. right hand part of this frame, the end 59 of an axle 58 is fixed byscrew-threads'and counter-nut. 60. A hub 61 is freely rotatableon this axle, and a bevel wheel 50 a ratchet-wheel 62 and a winding drum 63 are rigidly connected with this hub. A helical spring 64 is wound around the drum 63 one end of this spring being fixed at 65. to the casing 51- and the other end at 66 to the drum, said helical spring being put under tension or dei-tensioned according to the direction of rotation of'the drum. A spring motor 63 to 66 isflformed b-y this spring arrangement and acts. upon the'bevel wheel 50 and the ratchet tromotor 55 therefore drives the feed rollers 34,

3.6 in the. direction in which theyinsert thepaper sheets into the machine, whereas the spring motor 63 to 66 tends. to rotate the feedrollers 34, 36 in the direction of" removing the paper sheets fromthe machine. The driving connection. between the feed rollers 34, 36 and the electromotor 55 can be established and interrupted by the clutch 52. The. clutch 52 is a claw clutch in. the. form. of construction shown and permits of the clawsleeves acting the one On the other only in one direction of rotation. This is ensured by the toothed formation of the claws as shown in Fig. 4, this formation effecting a ready engagementv of the clutch in any mutual turning position oithe' clutch sleeves. One of the clutchsleeves is preferably made in one piece with the bevel wheel 5| and mounted looselyturnableon shaft: 61. which. itself is revolvabl-ymounted at 68. and 69 in. thecasing 5 1-. The other clutchsleeve. is coupled for turning with the shaft 81 by a pin-slot connection I0, II and can be shifted on the. shaft 61 according to the length of the slot II and thereby engaged with and disengaged The sh'iftable clutch-sleeve has an extension with twdfianges is mounted on one end 0t acIutch-shiftinglever I 14' sothat it can. looselyturn'. The clutch-shifting lever is constructed in the exam'pleshown as an 'elbow lever .oscillatableabout a bolt 15 in a bearingpart 16 in: the casing 51. A spring 11 wound around bolt'15.and bearing at one end on the casing 51 andat the other end on the elbow lever '14. continually tends to oscillate this elbowlever 14 in'anticlockwise direction as shown in .Fig. 4, i. .e. ina. direction to close the clutch 52. A second .ar'mpf the .elbow lever 14 carries a pressure element or foot" which acts. upon a blade spring 19, when the lever. 14 is oscillated by'the spring 11... The blade spring 1.8 carries at its end a contact-piece 88, which cooperates with a contact piece 8| on the end .of asecond blade spring 82. The rear ends of the two blade springs 18 and 82 are connected with-the cables for the electromotor 55 and are securely. mounted, by means of plates 83.of insulating material and by screws 84 suitably spaced, in the casing .51,

so that when the device is in inoperative position the contact piecesi88,.8l.are.at a certain distance the one from the other and the supply of current is interrupted. If the elbow lever 14 is oscillated by the spring 11, the pressure element 18 presses on the blade spring 18; and bends the same towards the spring82. until the contact pieces 88, 8| contact. In order tohold the. elbow lever 14 in opposition to the actionof spring "during the inoperative position of. the. device, in a position in which the contact at 88, 8| remains opened, alocking element 85 is provided which is oscillatable, about .a .pivot 86 on. an arm 81 of the casing 51. This locking elementv 85 can bring its nose 88 in front of ailug 88 of the elbow lever 14 and thus prevent the lever 14 from being oscil-.- lated by the spring 11... A spring 88, one end of which is fixed on, the. locking. element 85. and the other end on the elbow lever 14, tendsto. hold the locking element.85,in, thelocking position, in which the nose '88 comesto .lie under thelug 88. The locking element 85 is. brought under the action of the spring 88intothe. locking position, as soon ,as at the oscil lation,of the elbow lever 14 in clockwise directionthe left hand edge of lug 89 has passed beyondthe right hand-side face of the locking nose 88. The unlocking occurs w e t q kins cleneenH3 v i o c at in 121 sition to the tension of springf88 so far, that the lug 88 slipsoff the lockingnose 88. This. oscillation in the form of construction shown is derived from an adjusting element 8l, for instance a sleeve shiftable on the airle58, which sleeve by a flange 82 engages on a nose 93 on the locking element 85,so that the lockin element or la tch.

'can be unlocked as' desired when the sleeve 8| is shifted. The sleeve 8| is controlled by a spring 94 which bears against the covering hood 95 fixed on the axle and holds the sleeve 8| inlts' position of rest as showninFi'g.4'. l

Means are provided to enable 'the'sheets of paper to be'inserted or injected down the front feed chute various distances't'o bring a desired working line 'on the paper to the printing line, and vice versa; to efiect the'eiection of the sheet upwardly out of the paper chute, to bring suecessive writing lines to the printing lines of the platen.

Or the sheet of paper may be ejected from between the feed rolls 34,-36 at one continuous ejecting operation. I r

.A single means under control of the operator, enables the operatorto.ejectthe sheet step by step, or in one operation-as desired. Key levers 81 are arranged;abouttheaxle 58 for instance on -a common'bearing wire 88 and oscillatable inv radial slots'of an annular bearing body 86. The bearing body 88 is connected with a cover plate 88 of the casing 51 or made in one piece with this cover plate. The key levers carry each an actuating key I88-which keys are numbered with figures corresponding to the lines to be typed on, the; paper sheets. In order that a greater numberofkeys I88, for instance 26, may be accommodatedwithout the necessity of making the keystoo small, theyv are arranged in the present instance alternately displaced along the circumference of two circles having the same centre. The key levers 81 which arev consequently of different length are extended beyondthe bearings 95;; 98 and their, inner ends .I8I engage on the flange 82 of sleeve 8|. The depressing of a key I88 causes shifting; of the sleeve 8| in opposition tothe action-of spring .84, and therefore also shifting. of the nose 83 of the locking element'85 by means of the flange 92 The locking element is then oscillated inanti clockwise direction to free the clutch-shifting lever 14 for operation, and the. device is operated by the elements-11, 14, 88, 81,52. The spring 84 tends to return into their normal not depressed position, by means of elements 8|, 82, the key levers IN, 81 and with the same the keysl'88.

Under each key lever 81 a stop pin I82 is arranged whichis supported and guided in abore of the cover plate 88 and of the guide plate I83. These bores and also thestop pins I82, according to this form of construction, are arranged along the circumference of a circle,,the centre of which is the axle 58,. A. pressure spring I84 is laid, between the plates 88 and I83, around each stop pin I82 and bears at the one end against the plate I83 and at the other end against a flange. I85 of each stop pin I82, and therefore, tends to pull back the stop pin I82 into its guide bore in plate I83 and to move it towards the key lever 81.. This movement is stopped when the flange i85 comes to bear against the inner side of the cover .plate 89. When the stop pins I82 are in the inoperative position, as shown in Fig. 4, they'are moved, towards the, key levers 81 so far, that the. endsof the stop pins I82 remote from the keylevers are pulled back completely orialmostcompletely into'the bores in the plate I83. The other ends of the stop pins I82 bear at the same time against the under sides of the key levers 91 and thereby hold these in the inoperative position shown in Fig. 4. Locking levers I88 are mounted on a common bearing wire I88 in radial slits of a ring-shaped bearing body|81provided on-the irmer face of the cover plate'89. The bearing body I81 may be made, same'astheabearing body 88, in one piece with the plate 88 or fixedon this plate in any suitable manner. O'ne locking lever I86 is coordinated to each key lever 81. Each locking lever I85 is pushed intothe locking position by a spring I88, which at one-end engages on thelocking lever I86 and at the other end on the inner end |8I of the corresponding key lever. The locking levers |88,, whichin. this form of construction are elbowlevers, bear with the end faces IIBot their hooked endsI I8 against ears III of the corresponding key, levers which are in the position of rest, and their otherends 2 are pulled by thev action of springs I88.against afiange I.I3 of a sleeve II 4 shiftable. in longitudinal direction on axle 58.v -I. -1If a'key I88-.is depressed, the key lever. 81. of this :key shifts the corresponding stop 'pin- I82 against the action-of the spring I04 in the slots of'the plates 99 and I03 so that the end-of stop I02 remote from the key lever 91 projects from theguide bore in the plate I03. At the same time 'the inner end IOI of the key-lever shifts sleeve 9I against the action of spring 94, whereby the locking element 85 is disengaged and the elbow lever 14 liberated. I The elbow lever "I4 then closes under the actiorrof spring TI the contacts 80, BI and'the clutch 52. The fork shaped end II of the elbow lever 14 engages over the flange H3 of sleeve II4-and shifts this sleeve, when the elbow lever is oscillated at the closing or open-'- ing of the contacts 80, 8| and of the clutch 52. By this shifting of sleeve M4, the flange H3 is moved away from the inner ends II2 of the locking elements I06, which, as mentioned above, rest on the same when the device is in the inoperative position. As'by the depressing of a key lever 9'! the ear I is at the same time moved by such a distance that it slips off the end face N6, the locking element I06 belonging to the correspondingkey lever 91' can then follow the pull of spring I09 and oscillate inclockwise direction, as shown in Fig. 4, whereby the locking hook H0 engages over theear III and securely holds the key lever 01- in the depressed position. The other end I I2 of the locking element I06 has again come into contact with the flange N3 of the shifted sleeve I-I4 when. this locking element oscillates.

'The following arrangement is provided for stopping the device at the actually desired point.

011' the ratchet-wheel '62 a two-armed intermediate lever II-'I-, as shown in Figs; 3, 4 and '7, is 'oscillatably mounted on. a bolt- I I8. An angle piece H9 is also fixed on the ratchet-wheel 62, for instance by rivets I20, andcarries a twoarmed lever I22 oscillatableabout abol-t I21. The

intermediate lever II! and the two-armed lever I-2-2 permanently operate together. As a result, the end I23 of lever I Ilalways is in contact with the end I24 of lever I22, for instance by the action of a spring, so that'the movement of the lever I22 is obtained and influenced by the movements of the lever'I-I-L The other end I25 of lever II! is arranged so that, when the ratchetwheel 62- rotates, this end- I25 sweeps along the inner face of the guide plate I03.-- The end I25 of lever III, which may have a concavity I26 adapted-to the cross-section of the stop pins I02, comes to'bear against-a stop pin I02 when the pin projects from a gu-idebore of plate- I03, so that itcanno longer rotate together with the ratchet-wheel 62-, and the lever III-, whosebeareing bolt I I8 continuestomove with the ratchet-'- wheel 62, is oscillated.- At this oscillation the end I23 of lever I ll pressesagainst-theend I24 ct lever 122- and causes the-other and I2] of. this lever I22 topress against the flange I28 of sleeve H 4, so that this sleeve I I4-, which atthe starting of the device has been shifted by the forked end '5 ot the elbow lever 14 on the axle 58 towards the sleeve 9-I, is then shifted in opposite direction. During this shifting, the clutch-shitting lever 14, by means of itsforkedend II5,is drawn along aswell as the locking element I06, by means: of its end I I2,- is" turned in opposition to the pulling direction ofspring I09. The oscillating of. lever I4 efiects in the. manner already described. opening of. the clutchv 52 and interruption of the-contacts at80' and Bl, whereuponthe locking element 85 engages and secures the device in the disengaged position. By the. already men-- tionedusimultaneousturning of the locking en- 15 gagement element I06,.the locking between the elements H I, H0 is released, whereupon the corresponding key lever 91 again moves back into its position of rest under the influence of the springs 94 and I09. The stop pin I02 coordinated to the key leverzis liberated hereby and also moves into the inoperativeposition under the influence of its spring I-04, in.which position it is pulled back into its guide bore in the guide plate I03 and thus brought out of the path of the end I25, I26 of the intermediate lever II1. From the foregoing explanations can be seen that in this form of construction a key I00 of the machine which has been depressed at the starting of the device is maintained depressed, until the lever II! has reached the position corresponding to the corresponding stop pin I 02 and that the intermediate lever II'I, upon its arrest automaticall-y cuts out the communication of power to the paper feed rolls 34, 36, and the corresponding key I00 can again jump back from the depressed position into the position of rest.

When the clutch .52 is open, the spring motor 63 to 66 tends to rotate the bevel wheel 50 and with the same, through the intermediate elements 49, 48, 41, 46, also. the shaft 33 and the feed rollers 34 and 36, namely as already explained, in the direction opposite to the direction of the electromotor-drive, Consequently, when the clutch 52. is opened,- a retrograde movement of the feed devices would start, which would expel from the machine the paper sheet which has just been introduced into and adjusted in the machine. To prevent this, the ratchet-wheel 62 is provided, which cooperates with a pawl lock. The pawl lock is arranged in this form of construction on a separate manually operable spacing lever or element I50, as shown in Fig. '7, which is oscillatably mounted on a bolt I 51 in the casing 51. The pawllock, which is shown alone iII'Fig.- '7, comprises a fixed pawl I52 and a; loose pawl I54 oscillating about a'bolt I53 controlled bya spring I 55. An intermediate piece [51,159 oscillatable around bolt I56 acts upon the'loose' pawl I54 and tends to oscillate the same under the pull of aspring I58 in the same direction as the spring I does. This intermediate piece I51, I59, the part I51 of which bears against the back of the loose pawl I54, and the part I59 of which piece bearsagainst the line-space controlling element I50, limits the oscillation of the loose pawl I54. The line-space controlling element I50 can be oscillated from and to its normal intermediate position in anticlockwise direction, Fig; 3, about the bolt I5I, in opposition to the action of the spring I60 fixed at the one end on the casing 57 and at the other end on the line-space controlling element I50, until the edge I6I of the line-space controlling element I50 strikes against a bolt I62 mounted on the casing 51. Normally, i. e. in the position of rest of the line-space controlling element I50 shown in Fig. '3', the loose pawl I54 meshes with the teeth of ratchet-wheel 62 and keeps locked this ratchet- :vvheel in opposition to the drive of the spring motor 63'to66. If the ratchet-wheel 62, when the device is driven by the electromotor 55, is turned totension spring 64 ofthe springmotor 63 to 66, the backs of the teeth of the ratchet-wheel 62 moving over the back of the loose pawl I54 oscillatethis loose pawl I54,;so that the ratchet-wheel 62 moves freely past the pawl lock.

The spring motor vI53 to 66 ha's a tendency to oscillate by. means of. one of the teeth of the ratchet-wheel 62 the loose pawl :I5'4'in opposition to the action of the springs I55 and'I56 until the part I 59 ofthe intermediatejelement I51 comes to bear againstthe line-spacecontrolling element I 50' and prevents further rotation of the ratchet wheel 62; as shown inFig. If then' by means of a handle I63 the line-space controlling element I50 is oscillated in anticlockwise directio'nuntilit bears against a bolt" I62; the loose pawl I54 again comes out of engagement with the ratchet-wheel'62. The fixed ratchet tooth I52 engages at the same time intothe teeth of the ratchet-wheel 62, i. e. in the next following gap between teeth, and stops the rotation of the ratchet-wheel 62, and with the same themovee ment of the whole inserting device; after ashort travel up to the next following'itooth 'of the ratchet-wheel. In the meantime the loose'pawl I54 has been oscillate'dbytheaction of springs I55, I 58 so that the loose pawl I54 lies just behind the fixed ratchet tooth and engages, when the line-space controlling element 150 is-tumed back into the position shown in Fig;" 3;.in the same gap between teeth from'which the fixed ratchet tooth I52 has just been removed. The ratchet-wheel 62' then carries out a short rota tion in the course'of which the loose pawl I54 is again oscillated by a tooth of the ratchetwheel until the arm I59 of theintermediate ele ment I51 comes to bear against the'line-space controlling element 'I50 and prevents a further oscillation of the loose pawl I54 and a further rotation of the ratchet wheel 62. A feeding operation of the pawl ratchet gear is thus terminated. During this feeding operation the ratchet-wheel 62' hasjbeen able to rotate by one circular step. To thisrotation of the ratchetwheel 52 by one circular step corresponds a rotation of the paper feeding arrangement by one line s'pacing'in the'direction of ejection of an inserted' paper' sheet. on the inserted sheet the next lower linecomes thereby into the position for typing- If,'however, the feedinghas not to be by onlyone spacingbetween lines, but the inserted sheet has to be completely ejected from the machine, the ratchet whe'e'li 62ghas to 'be freed from'the; action of the pawl feed gear, in order that following thepullof the spring motor 63 to.65 it can be movedback into the" initial position. In this initial position the ratchetwheel 62 is stoppedlbyan abutment. 2 I fixed on itas shown in 5, which abutment. strikes against a spring 2II preferably c'omposed offa number of lamellas; The. spring 2| I is fixed at 2I2 onthe casing and upon contact of the abutment2I0 with thefree end'of the spring 2| I', the spring flexes untilit rests against a support 2I3 which prevents further bendingof the spring 2 H and thus finallylimits the travel of the abutment'2 I0., By the spring 2 isv efiected that the shock is" clamped which occurs when the moved elements are stopped, so'that damagingiof elements cannottake place. t v

The releasing 'of the ratchetewheel 62, .isefa fected in that? the two, feed ,pawls- 1 52, 154,; by moving the line space escapement controllinglele ment I50, oscillate in'jclockwise direction out of therange of the teeth of the ratchetewheel 62. 'I'heline spaceescapement controlling element I50 is thus ,oscillatediabo'ut itsv bolt I I ,in. clockwise direction-until. the edgeIBLof an inter: mediate element I66 oscillatably mounted at. J65 bears against the .bolt -v 'lfifl and' preventsj' the further movement crime, line spae' escape'mnt controlling element I50, The backward movement of the line space escapementcontrolling element I50 is effected by a spring I68 of the intermediate element I66. This intermediate element I 66 is then oscillated in anticlockwise direction until its arm I69 strikes against bolt I 61 and its face I10 presses against the line space escapement controlling element I50 and returns the same into its inoperative position shown'in Fig.3. 1 V

The line space escapement controlling element I50 can be actuated notonly by the handle I63, but also simultaneously by the usual line-adjusting arrangement of the machine. -With this ob"-. ject in view a slide I1I, Figs. 1 and 3,.similar'to the slide 243, Fig. 2,*of the line feeding mechanism. arranged on the left hand side of the paper carriage, as shown inFig. ;2,' is provided on -the right hand side of the machine on frame I4 or on the lower part of the, casing 51, for instance by means of a pin and ,slotguiding one. plate I12, 50 that it can be shifted'towards the platen 2 and away from the same. The slides 243 and "I are shifted both-together by the'oscillation of one of the hand levers 240, 24I which arecona nected the one with the other by a rod 242. The slide I1I, as shown in Figs. 3 and 6, carries ona bolt I14 an intermediate element I13 oscillatable about this bolt. By the oscillation 'of the inter: mediate element I13 by means of the handle I15 this intermediate element can be brought into two adjusting'positions; In these two positions the intermediate element is secured by a safety device which may consist for instance of a ball I16. located in a bore In of the intermediate element I13 and, pressed down by a resilient plate I11 according to the adjusted position of the intermediate element I13, seats itself in one of two aperturesflfiin the slide "L. In Fig. 6 a portion of ball: I16 is visible through the bore I18; In order that the intermediate elementv I13 cannot be turnedbeyond the two'adjustedpositions, a bolt 200 providedon its lower side, pro= jects into a recess 2 0I of' slide HI and in both adjusted positionsv bears against the one'orother side wall of the reces s 20l. The intermediate element I13 has a-wedge-shaped end with two side faces I80, I. "According to-the position to which the intermediate element I13'has been adjusted, either the'face-I80or the face I80- comes, at the shifting ofslide-I1I at the linefeeding operation of either l-ine-spacing'lever 240 or 24I, into contact with a roller I8I arranged on the downwardly extending arm of the line-space escapement controlling element I50. If thenat the shifting of the intermediateelement I13 for instance the face I80 comes into contact: with roller I8I, when the slide I1I, is actuated at; the line-feeding operation, it pushes the roller -I8I-to the. left, as shown in Fig. 6.- The line-space escapement controlling element I50 is thereby oscil,- lated in clockwise, direction, as shown in Fig; 3, until the .face I64 of the-intermediate element I66 bears against bolt I61. At this occasion, 'as above described, the pawl ratchet ar is completely disengaged froin-the teeth of the ratchet-, Wheel 62, wherefrom results a complete returning of the inserting device :into the initialposition, in which abutment 2) and counter-abutment 2I I; 2I3 touch the onethe other and the inserted papersheets have again been; completely ejected. ;,.At. the cooperation of the face I 80' f the intermediate element I .13 in; the other adjustin position of the samewit-hthe-ro1ler;-I8I a moviingof the. roller I 8 I towards the right-takes place at the line spacing operation, which causes an oscillation of the line-space escapement controlling element I50 in anticlockwise direction, until the face I6! of the same bears against the bolt I62 and, as already explained, a further rotation of the ratchet-wheel 62 by one tooth and by one line space of an inserted paper sheet. After the roller I 8| has been shifted by the faces I80 or I80 respectively of the intermediate element I13, this element "3 is again oscillated back, together with the slide I'll by the action of a spring I82 fixed at the one end on said slide and at the other end on the plate II2 after the hand levers 240, I have been liberated, as'shown in Fig. 2, for such a distance that the faces I80; I80 of the intermediate element-I13 come out of the range of the roller I8I, this being the position shown in'Fig. 6. Hereby the possibility is given to the line'space escapement controlling element I50 and consequently to the pawl ratchet gear to move back into their positions of rest, shown in Figs. 3 and 7, under the action of the springs I60 or I68.

The casing 51, in which the selectingand feeding-arrangement described is preferably accommodated, is'well closed by the already mentioned covering plate 99 and by covering hoods I83, 95, as shown in Figs. 1 to 4. The covering hoods I83, 95 may be fixed for instance on the covering'plate 99 or on the axle 58. Only the elements material for theoperation of the device, that is the key levers 91 with their keys I and the ends of the stop pins I02, project through the covering plate 99 and through the hood I83. The shanks of the key levers 91 slide in slits of the side wall of the covering hood I83, and the ends of the slits limit the movement of the keys. In the form of construction shown by way of example, selecting arrangement, inserting arrangement and source of power 55 are mounted on the rocking frame I4 adapted to be placed on the paper carriage I, 2 and to be oscillated away from the same and removed. A compact and clear construction is thus obtained.

The effect of the device and the operation of the same take place as follows: If a paper sheet S has to be inserted into the machine and an entry on the same has to be made, for instance, on line I0, the lower edge of the paper sheet S, that is the line with the highest number at the left, is inserted into the front feed paper guiding funnel 26, 21, 28, the lower edge K of-the paper sheet lying in front of theplaten 2, and bearing against the contacting points of the feed rollers 34, 36, as shown in Fig. 1. If then the selecting key I00 is depressed, which carries the number 10 and corresponds to the tenth line of the insertedpaper sheet, the locking element 85 is disengaged by the end of the key lever IOI through the intermediary of the sleeve 9|, Whereupon the clutch-shifting element I4, owing to the pull of the spring 11, closes the contact at 80, 8I and engages the clutch 52. The'electromotor 55 drives then, by the intermediate elements 46 to 54, 33, the feed rollers 34, 36 and draws the paper sheet Sinto the machine. Simultaneously with the depressingof a key I00 the corresponding stop pin I02 is alsoshifted, as already described, to project its end into the path of the end I25, I26 of the intermediate lever I. By thev movement of the clutch shifting element I4, the sleeve H4 is shifted by the fork-part I I5 of this element, and therewith the end II2 of the lockingelement I06 is liberated. After depressing of key I00, the head- 0 of the locking element I06 engages and holds the key lever 91 and'the engaged stop pin I02 in depressed position.

The inserting movement and therefore also the rotation of the ratchet-Wheel 62 continues until the set stop pin I02 and the lever end I25, I26 come into. contact the one with the other. Then, the lever I22. is oscillated by the lever III during a short further movement-of the ratchet-wheel 62. Hereby the sleeve H4 is shifted into the position shown in Fig. 4, whereby also the clutch-shifting element I4 and the locking element I06 are brought into the position of rest, which means that the clutch 52 is opened, the contact. 80, 8I i interrupted, the locking elements 88, 89 engaged and the locking elements III, IIO disengaged; At this disconnection of the drive of the device and interrupting of the circuit, thedepressed key lever I00, under the action of the springs I09, 94, and the set limiting pin vJ02, under the action of the spring I04, jump back. into their inoperative positions. The paper feeding arrangement is thus cut out and held, by the action of the pawl locking mechanism 62, I52, I54, in the assumed position, in which the line 10 of .the paper sheet S to be inserted is at the typing position. The inserting of paper sheet S into the paper guide I and 8 underneath the platen 2 is facilitated by resilient paper holding fingers I90, Fig. 1, mounted on the lower edge of the paper guiding chute plate 28, along which they are shiftabl and thereby adaptable, as regards position, to the width of the paper sheet. If after the first ent y on the paper sheet S in line 10, for instance a further entry has to be made in line 3, which lies. higher up on the paper sheet S than line 10. The paper sheet must be shifted downwards into the paper guide. Therefore it is merely necessary to depress, after the first entry has been made, the key I00 with the number 3, whereupon in the manner already described the feed roll device is started again to feed the inserted sheet still farther downwardly, and automatically cut out by contact of the arm I25 of the front feed-arresting lever III with the stop pin I02. set by this key 3. During this additional front feed insertion of the paper sheet,the teeth of the ratchet wheel 62 ratchet past the locking pawl I54, idly rocking the pawl on the pivot I5I If, on the other hand, after typing in line 10 an entry has to be made in another line, for instance in line 22, which lies lower than line 10,, to bring. this line in writing position the paper sheet must be shifted upwards so many line spaces as exist between lines 10 and 22. A movement in this direction is ordinarily prevented by the locking pawls I52 and I54 respectively. Therefore these locking pawls by means of hand lever I63 or by means of the line feeding levers 240, 24I must be actuated to allow by their alternatively engaging the teeth of the ratchet-wheel 62 a line spacing movement. As the paper has to be fed by 12 lines, the abovesaid elements, have to be actuated twelve times. Theintermediate element II3' on the slide III must, as can be seen from that which has already been described, be adjusted for this feeding proceeding 'so that the inclined face I cooperates with the roller I8I, providing the operator uses either of the line space feed levers 240, 24I to effect the step by-Step escapement of the pawl and ratchet mechanism 62, I52, I54.

According to a modified form of construction shown in Fig. 8, the selecting arrangement and the source of Power are not mounted on the paper carriage or onaframe I 4 adapted to be removably attached to the paper carriage, but in a casing 250, fixed on the machine frame itself, for instance on the right hand side wall of the same. The'load on, the paper carriage is thus reduced and, on the other hand, an easier and more rapid manner of operation is possible for certain kinds of machines; The modified arrangement may be especially of advantage with very Wide paper carriages, as; the dis tance between thenormal position :of the hands of the typist on the keyboard-of the typewriting machine and the selecting arrangement provided on the right hand -endof the paper carriage is rather great, which wo'uld result'in-a time requiring, fatiguing'manner of operation of the selecting arrangement; The, f source of power, for instance an ,electromotor, not shown, is arranged on the machine frame-itselforfon' the casing 250 of the selectin arrangement. From the wheel 50 a shaft 25| is driven, which extends obliquelyupwards towards "the rear side' of the machine frame and carries twoeear eels 2 253 at its two ends. 'I'he wheel 252 is in mesh with the wheel'58, whereas'the other wheel 253 drives, through the intermediary of 'a Wheel 254,

a shaft 255 which is journaled on the rear side of the machine, as shown in Figs. 9and 10, and extends parallel with the letter spacing direction of travel of the papercarriag'e l 'l'lns shaft 255 is, for instance,jfour corneredj so that itsrotation is transmitted to bevel wheel 256 shiftable along the shaft 255. [The bevellwheel "256 has a spool-like hub 251, the groove258 of which is engaged by. the forkarms 259ofiabearing bracket- 260 fixedlon the paper carriage, said arms acting. as followers. In the bearing bracket266 a vertical shaft 26! is revolvably mounted, at the ends of which two bevel wheels 262, 263 respectively are fixed. The bevel wheel ,262 meshes with the bevel wheel 256. The bevel wheel 263 on the other endofv shaft 26l meshes with a wheel 264 which, by means of a shaft 265 and wheels 266, 26.1, 46, transmits the drive from the source, of power, to the 'shaft 268 on which the feed rollers {iii are mounted. 1 Instead of the foregoing transmissiontrain, thetransmission of the driving movement could be efi'ectedfby means of a grooved shaft and of a shiftable bevel wheel equipped with-a slide key, orit may also, as

shown in Figs. 11 and 12, be effected by atoothed cylinder 269.- Thetoothed cylinder 269 is rotatably mounted'on the rearsideof the machine frame and extends'inthe direction of letter spacing movement of the-paper carriage. From the toothed wheel,253. ashafttflfl isdriven by a bevel whee12'l2,-said shaft=-being1 journaled in the part-21|= of the-machine frame and drives the toothed cylinder 269 by means of a spur wheel 213; A spur wheel .216; which is arranged onthe paper carriage on-a shaft 215 revolvable in bearingarms 214, meshes with'the toothed cylinder 269 and transmits the movement of this cylinder tona bevel wheel 2', fromwhich the bevel Wheel 262 andftheshaft- 26l are driven. The transmission of the movement 'upto the front feedrollers '34, 36 may then be effected for instance in"-the-manner'illustrated'in Fig. 9. Durin the movement of. the paper carriag'eon the machine'frame, the teeth of'the spurwheel 216' slide" continually in gaps between teeth of the toothed cylinder 269 "which extend over the whole .width of "the machine frame. The 3 driv ing connection :between. the; source of power and 7 when this paper carriage travels onthe machine frame, slide through a'corre'sponding bore in a bevel wheel 256 rotatab1y mounted on the machine frame. The rotation of'shaft 255'might then be conveyed 'by a spur wheel or bevel wheel' keyed on one "end of the shaft. The toothed cylinder might also be mounted,'i nstead of in the machine frame, for instance on the 'iapercarriage an'dmesh with a spur wheel r0 tatably mounted on the machine frame; Also in this instance the just-engaging toothed parts l'of the cylinder and of the"spur wheel would, during the travelling of the paper carriagef-"slide the one in the other in the direction of the parallel axes of the cylinder and of the spur wheel." To enable 'a vertical or-"perpendicular case shifting movement of the case'shifting jframe and platen relatively to the main frame of the' typewriting machine, the vertical shaft 26I of Fig. 9 may be-formed as shownin'Figs. 13" and 14. In this instance a/shaft 216,'journaled in acarrier 219 of the main frame of thepaper carriage, carries at its lower end the bevel wheel 262 and at its upper'end a large pinion 280. In a bracket 28! of the case shift frame of the paper carriage a shaft'282 parallel to the shaft 218 is journaled. This shaft 282 establishes the driving connection" between the pinion 288 an'd'the bevel wheel 264 by spur whee1s283, 263 mounted on its ends. At the case shifting of the machine. that is at the shifting of the elements 219," 28| the one towards the other inthe directionbf the parallel perpendicular shafts 218, 282, the teeth of wheel 283 slide in the gaps between teeth of 'the pinion-'280, the width of which is gr'eater'than the length of the greatest case shifting travelof the-paper'carriage; so that the driving connection is "ensuredin'any case'shifting position'of themachine; As shown in Fig; 14, a perpendicular shaft 284 is revolvably'arranged, according tea-modified form of con struction, in the main frame 219' of the paper carriage and a shaft 285, coaxial with shaft 284, in the case shift frame 28l'ofthe paper ca'rriage. A clutch sleeve 286 having a longitudinal boreand slit in longitudinal direction is rigidly 'connectedwith the 'upperend of shaft 284. The lower part of shaft 285; which has-a rib 281 engaging in the slit of the coupl-ing' device 286 slidesin said bore at the case-shifting movement, at which the parts 218,-28L move the one relative to the other-in the direction of the perpendicular "coaxial shafts 284', 285. By-the rib 281 and the slit of the coupling sleeve 286 the driving connection between the' two shafts 284, 285 is ensured in any case-shifting position. These arrangements might, however, be omitted when the case-shifting is effected by. type lever segments in which caset'the paper carriage parts and machine frame do not change their mutual position in perpendicular direction. In'thisinstance-the construction accord ing to Fig. 12 may be=selected; a

In order to enable, in spite of :the'bevel wheel gears which' produce the driving connections to the front:feed rollers '34, 36, l;as: shown in Fig. 9, an outward-oscillation" of the'rcarryiing or 'rockingiframe "l4 aboutithe: pivots ;l1, :|'8;

Images