US2407799A - Carbon feeding means for manifolding machines - Google Patents

Description

' Sept. 17, 1946. R. WQRITZERT CARBON FEEDING MEANS FOR MANIFOLDING MACHINES Filed April 28, 1945 5 Sheets-Sheet 1 a $5.3.ilid'9 INVENTOR ROBERT W. RITZERT,

ATTORNEYS p 7, 1946. R. w. RITZERT 2,407,799

CARBON FEEDING MEANS FOR MANIFOLDING MACHINES Filed April 28, 1943 3 Sheets-Sheet 2 .J'TEE INVENTOR nonsmw. mrzsa'r imam; ATTORNEY Sept. 17, 1946. R. w. RITZERT 2,407,799 CARBON FEEDING MEANS FOR MANIFQLDING MACHINES Filed April 28, 1945 s Sheets-Sheet z INVENTOR ROBERT WRITZERI; BY

qwuodz ATTORNEYS Patented Sept. 17, 1946 t UNITED STATES PATENT OFFICE CARBON FEEDING MEANS FOR MANIFOLDING MACHINES Robert W. Ritzert, Dayton, Ohio, assignor to The Efgry Register 60., Dayton, Ohio, a corporation Ohio Application April 28, 1943, Serial No. 484,810

Claims. (01. 197-426) 1 2 The present invention relates to manifolding tent drivesheretofore performed by the clutch machines, and in particular to such machines and yet will be of a more simple design with conwhich are adapted to make multiple copies of sequently less expense.

typed or printed material by means of copying Another object of the invention is to provide ribbons or carbons, particularly those machines 5 an adding and tabulating machine having a used in connection with typing, adding and tabmanifolding attachment with an improved and ulating machines and the like. simplified form of mechanism by which the pa- The multiple typing or printing is provided by per moving drive may be readily separated from a plurality of carbon ribbon or webs which are the ribbon moving or pin wheel drive, thus fainterleaved transversely of and between the cilitating synchronizing or other control effects paper sheets at the position of the platen. These between these various movements. ribbons are caused to move acrossthe paper, 1. e. These objects are carried out in brief in acnormal to the movem nt f he pap durin cordance with the present invention by substithe spacing line interval by means of a pin wheel tuting a wholly electrical actuating mechanism drive. Thusthe carbon ribbons are moved from '15 for t t paper mQVing d i and t e e s e of t p p to the other Side in t bon feed in such a way that one of the drives co r sp d o e line Spacing operations of may be operated independently of the other or the main typing machine, the separate movemay be operated Simultaneously and in both merits of the ribbons ranging between One-quarcases without requiring complicated clutch apter and o e-ha f h paratus and a complicated control mechanism for When the last line has been typed p the clutch.

the Paper; an automatic ejection mechaf The invention will be better understood when msm brought 1170 play to move the superposed reference is made to the following description Sheets WebSPf paper rapidly upwardly considered in connection with the accompanying considerable distance such that the succeeding drawings in which:

sheet of the superposed paper lengths are placed Figure 1 is a perspective View of a coin/em i typmg Prmtm? Opel" tional typing or adding and tabulating machine Durmg this elecmon spactng feeding 9 improved in accordance with the invention. This eratwn of the paper webs the pm Wheel which view is taken from the rear of the machine with feeds the carbon ribbons across the paper is some of the parts removed in order to show the moved to make certain that the carbon ribbons parts involved in the invention more r y a are free from the typed or printed sheets. It will be understood that the pin wheel does not rotate 2 1s a fragmentary elevatmnal of duringtthe typing or printing operation. a modified structural arrangement, partly broken The pin wheel therefore called upon to away and a section of the actuating elements for have a number of diiierent rotary operations, rotating the paper and ribbon drivesextending over different periods of time and these m? 3 IS a elevational end view of the rotary movements may be separated by periods mechamsm Show? 111 l 2 d taken at pof time during which the pin wheel remains staf a ely the hne 3-? in that figure.

tionary. In the case of a motor driven machine, Flgure 4 15 e VIEW elmllal t0 Flgllre 3 but the motor rotates continuously so that a suitshofvlng a modified structural arran ementable form of clutch must be inserted between the Fleure 5 Is an elevatwnal vlew of e i p oved motor drive and the intermittently movable pin machine looking om the front but with the wheel. The control element for this clutch is paper web brokenaway o how the otherwise normally of a complicated type sincethe clutch hidden P must operate entirely automatically and over F gure 6 is a view of the ratchet wheel shown difierent time intervals during the line spacing n igure looking approximately from the poand eject operations of the machine and must sition of line 66 in t fig re in he direction be kept open during the typing of the succes- 0f the arrowssivelines of print, Figure 7 is a perspective diagrammatic view The primary object of the present invention is f the ta s of an e ectr cally operated system to eliminate this complicated clutch and its confor actuating the ribbon feeding mechanism.

trol element. A a substitute therefore, a mech- This structure epresents a modification of the anism is provided of the electrical type which apparatus shown in the other figures. Will perform all of the functions of the intermit- 5 Figure 8 shows a modified form of ratchet Genefdl arr cmgeii'ieizt In general, the maniiolding machine of this invention as shown in Figures 1 and 2 is an ate,

tachment to be used in conjunction with a machine adapted to type or print a-record; such;

as a tabulating and listing machine, typewriting machine or adding machine. 'Ihe-;mac;hine org, dinarily is provided with typing-mechanism,- in-i eluding type and a ribbon, together with means for printing a single copy of a record or multiple. copies with the use of sheets of carbon paper webs.

In the machine disclosed in this application thefihultiple copies of. the recordj-are-madeupon, multiple paper webs interleaved,with.one-time' copying.ribb-onsbetween the,.multiple' paper webs and. traveling in. a. direction. perpendicular. to

which may consistlof a carbonpaper ribbon is.

quivalent t anjentire. sheetj fjth 'barbon p p r hitherto employed.

Certain machines; for which, my. invention, is

intended, such as .t'ajbulatingandiisting machines are equipped withg mechanisms for automatic iect n..mqvem ntx iimana er o ms; that. for moving the paper Webs a" multiplicity. oiline spacings between successive forms injorder' to pass from the typing., psitio n, at the bottom of one form, to the't'yping position at the top of 'the' I These forms" are provided w'ith, i'e-. versely arranged creases or folds in order more" conveniently itQl be handled and they are presented to the main-machine and'the manifolding next form.

attachment in this-manner.

These forms are caused' to lie fiat-wiseagainst a vertical framework of-the'machine during the typing or-printing operationand when this-operation is completed the-forms: are fed upwardly over the frame in such away that theywill return to their creased unfolded condition and be received by a basket ortrough.

The copying. ribbons' employed,

' plate" being secured to the right hand side plate plied from a spool compartment 4 of any suitable and well known type, the latter being secured to one of the side frames 5 of the machine. The spools are separated from one another within the compartment 4 and the four strands of ribbon are carried over suitably positioned and individual guide. rolls 6- mounted; on spindles which project inwardly from the side. plate. .In order to change the direction of the ribbons from the vertical to the horizontal so as to cause the, ribbon, to extend along the length of the platen isoecalled turn plate I is employed, this 5;:as:;seen;in;Ffigure ,5;, The turn plate may comprise "an; angularlyiishaped sheet of metal having a large fiat plate and being provided at the bottomwith a, diag o nally extending edge 8 over which the ribbons are caused to move, thus givinterleaved between the multiple paper sheets on;

In general, I propose-to eliminate clutches and mechanicalipower transmission mechanisms, replacing them -by-electrical systems of a si mplified'arrangement andlparts.

Referring more: particularly to- Figures 1 and 5, reference character ldesignates the platen of the-machine and-the middle line of the-platen would-represent. the: normal typing or printing position at which the type arms contact with the paper. The. lengths of paperbeingtype'd i or printed. are. indicated at 2: and foi' simplicity. only onethickness of paper. hasbeen. illu'strate'd' although it will be understood that there is 1' normally. a: plurality ofpaper sheets being fed simultaneouslythroughthe machine and. inter-.

leavefd: withcarb'on paper ribbons indicated atl .ing-ethemLaE horizontal direction as seen in Figures 5 and 7. At the opposite end of the platen theribbons which are, now arranged. in stack form due-to; the converging v action. .of the-turn plate. are caused. to, pass around a. pin. wheel] 9 which isv rotatablgp actuated inthe. man'nen which-fwill bedescribed hereinaften Thus they pin. wheel-serves. to. exert a pull :on,

the various lengths of ribbomandthereioremain, tains the, latter in attautconditioni 'l his tautness isffacilitated by applying] a braking action. on the -spools.' Iii. contained-1m the compartment 4., It- Willi be understood} that the ribbons. 3. interleave the paper lengths 2 and-whensthema chine, is originally seteupithe ribbons are taken, through; the: spaces formed, betvl ieen the 1 sheetsof paper is; well; understood-in the, art;

A; typewriting machine of thecharacten shown is often; employed; in connectionlwith a, mani folding; operation in which the paper sheets on ,vertically: upward .;over the; frame generally desige "natedgby the numeral l3. See Figure 5;- This f mga: ay on ist of i umber; f i e; t s l u e nendrvi o ether;- n spaced. a t acumen-sha l i te m diat shaft and.

a l w r: haft; ll; 'Iiheiupper cseshaft *is:

pr vided witha plura. y of .1 s; 8 lee ed-a various distances apart to accommodateany-del si ed h; f: p per. he: ntermediate: ha t;

6 m y ITVe:as;.a., lllliin f fh b on: sp o s I 5 ,while, that lower sh rovidcd wi h apairrofsproclsetgwheels s 1 A chain; zi wis; ca r i v these; sp ocket: w ls the: upper; ends; o f; the chainzmeshing with an quivalent pain ofywhec smounted ,on 1 he a t l 5; as shown: in Figure ,5, ;or;onsha f t l B I as ShQW l' in Figure 1.. The sprc-ckeiix;chains;2i! are provided; with; outwardly extending; projections- 26w which. register with qspaced;openings; 54 contained in the, multiple paper web Theerrangement-iS uQ 1tha1tff 1SEthi cha n zarre: mov pwa d y. t e I paper sheets: 2 :areacaused to, begfed in the vertical, direction over: the; uide, rollers 18; The sprcmlget wheels; I9 are actuated by meansof: a gear-22 secured; to the'shaft IT, at the; outside of the frame members.

agear train,23 witha gear 24 whichis mounted on the platen shaft '25: The gear 24 is power driven through a pinion 26-which may be mechanically connected in any suitable, and well knownmanner to themain drivemotor 21 shown This gear meshe through in Figure 1. A suitable form of clutch is inserted between the motor and the gear train which drives the sprocket shaft ll. Consequent- 1y, as the shaft I? is rotated in a manner which will be described in detail, the manifolded paper is pulled from the stack H and after passing around the platen I is caused to move vertically upwardly over the rollers l8 by means of the sprocket chains and the upper end of the paper may be received as a folded stack by the basket 28. l

The paper is maintained in a relatively flat state as it is moved upwardly over the rollers by means of a skeleton frame which may be formed of a plurality of vertically extending metal strips 29 secured at their upper ends to a horizontally disposed bar and the lower ends of which carry a short horizontal bar 3 I. This frame, or rather the lower ends thereof press against the paper.

The motor 2! may be secured to one of the side walls 5 of the machine and a shaft 32 connects the motor to a clutch generally indicated at 33. This clutch is of simple and conventional type, employing a grooved collar 34 which is keyed to the shaft 32 but is permitted to slide along the shaft. The collar is provided with teeth (not shown) at its inner end and these teeth are adapted to engage the teeth 35 of the coupling 36 which is mounted on a shaft 31in alinement with the shaft 32. nalledin bearings formed by the brackets 38. A worm 39 is secured to the shaft 31, this worm meshing with a worm Wheel 40 which is secured to a shaft 4| journalled at in the side wall.

For moving the collar 34 toward and away from the clutch portion 36 a bifurcated yoke 43 is employed, the upper legs of which engage the circumferential groove in the collar. This yoke is carried on an upright arm or lever 44 which is pivoted on a shaft 45 intermediate the length of the lever. The lower end of the lever is pivotally secured to the plunger or slidable armature 46 of an electromagnet 41 which is also secured in any suitable manner to the side wall. The shaft 45 is .l'ournalled at each end in any suitable manner as indicated at 48 and the nearer end of the shaft as seen in Figure 1 is provided with a crank 49. The free end of the crank is pivotally. secured to an extensible arm which passes through a stationary guide bar 5| provided with a slot which received the arm 50.

Directly in line with the arm 55 there is a ratchet Wheel 52 mounted on the shaft 4| and any one tooth of which is adapted to be engaged by the upper end of the arm 56. The shaft 4| is extended across the rear of the paper 2 and is provided with one or more paper feeding sprockets I9 carrying a sprocket chain 20 which engages the sprocket wheel 2|. As was explained in connection with Figure 5 there are normally two sprocket wheel and chain arrangements although only one has been shown in Figure 1 and the chain carries projections 29a which register with openings 54 in the paper webs 2, thus moving these webs upwardly as the sprocket wheel I9 is rotated. The outer end of the shaft 4| carries a gear 55 which meshes with a gear 56 mounted on a shaft 51 journalled in any suitable and well known manner. A pin wheel 58 is mounted on the shaft 57 and the ribbon or the ribbon stack 3 is carried around the pin wheel as indicated.

The armature 4B of the electromagnet is nor- The shaft 31 may be jourmally held in. an extended position by means of a tension spring 59 secured to an anchor rod 60. An electrical circuit indicated by the wires 6| is taken from the electromagnet 4'! tea micro-switch 62 of any suitable and well known character. extends downwardly therefrom and this: contact is adapted to engage the teeth 63 of a circular element 64 which is mounted on a rotatable shaft 55. In addition to the teeth 63 the element 64 is provided preferably with a smooth cam surface 66 for reasons which will be explained presently.

Operation of the structure shown in Figur 1 Assume that the shaft 55 (lower left hand corner of Figure 1) is connected to an element of the main typing or printing machine which element is controlled in its movement such as to provide the proper sequential movements of the ribbon feeding and paper feeding mechanism, during the line spacing and eject operations. A machine sold on the market under the name of IBM provides such an element and assume that when this element is caused to move during the operation of the IBM machine a rotary effect of a predetermined amount and at the proper time is supplied to the shaft 65. The teeth 53 of the member 64 will successively engage the reciprocable rod of the switch 62 and will cause the circuit 6| to be closed and opened sequentially. If this circuit were connected to a battery (not shown) the current impulses would cause the successive energization and de-energization of the electromagnet 41. Assume for the moment that the eleotromagnet is energized during one of these impulses, the arm 44 is caused to swing about the shaft 45 and the clutch 33 becomes engaged. The motor 21 is assumed to be continually operating so that motion is transmitted to the worm 39 and the shaft 4| is accordingly rotated. Under these conditions the paper 2 will be caused to move upwardly and the pin Wheel 58 will also rotate to move the ribbon 3 a predetermined distance to the right.- This is the effect which takes place during the so-called line spacing operation in which the paper is moved upwardly a distance represented by the distance between two successive lines of typed imprints and the ribbon is moved a predetermined distance across the paper to present fresh carbon surfaces to the type arm preparatory for typing the next line. It is apparent that there are as many teeth on the element 64 as may be necessary to line space each form until finally the last line on the form is completed.

'It is then necessary to cause the paper form to be ejected in order to bring the next form into position so that the first line on this form may be typed. By this time the shaft 65 will have been rotated to a position such that the cam surface 66 will be directly under the movable contact member of the limit switch and will hold the circuit 6| closed over a relatively long period of time. Under. these conditions the clutch 33 will be engaged for a corresponding longer period of time causing the sprocket chains 25 to move the paper upwardly through the predetermined distance required for the eject operation and at the same time causing the pin wheel 58 to be rotated as many times as is desired according to the operating schedule of a manifold typing or printing machine. It will be understood that the shaft 65 is not operated continuously but only The movable contact of the switch that. the paper 2 be moved through, a predetermined distance upwardly and the pin wheel shall be rotated a predetermined number of times.

In order to prevent over-running of the sprocket chains '28 and Wheel 58- because of theirmomentum at the end of a, spacing or ejecting operation, spring 59 acts instantaneously upon de-energization of electromagnet ll to. rotate shaft 45 and arm 49 counter-clockwise, to thus move the end of arminto the path of the teeth upon ratchet wheel 52-. Arm 50 thus. acts. to prevent any further paper-advancing movement of shaft 4| and the parts connected therewith, until electromagnet 4'! is again energized- In Figures 2 and 3 a modified arrangement is shown. These figures illustrate a pair of paper moving chains 20 which are mounted on sprocket wheels I9, the latter being carried on a shaft If. The shaft extends through the side frame member 5 of the machine and is provided with a gear 61, also a ratchet wheel 68. A pawl 69 pivoted at HI is adapted to engage the teeth of the ratchet wheel, the pawl being carried on an arm H which is pivotally connected to the plunger 12 of an electromagnet E3. The gear 61. is adapted to engage with a gear 14 which is mounted on the outside of the frame member 5., this gear being carried on a shaft. '75 which terminate in a bevel gear 76 pinned to. the. shaft. The bevel gear and its shaft. 15 are. journalled in a casing ll secured to the side frame member 5. The bevel gear 16 is adapted to mesh with a bevel gear 18 which is journalled in the bottom portion 59 of the casing ll. A. shaft (not shown) extends downwardly from the gear .18 toa pin wheel. 88, the shaft being contained in a protective housing 8|. As shown in Figure 2 and 3 the side frame member 5 may be provided at its lower end with an arcuate slot which fits over a portion of reduced diameter 83 formed at one end of the platen I. An electrical circuit 84 passes through a battery (not shown) to a microlimit switch indicated at 35. The movable contact member or finger of the switch is adapted to engage the teeth'of a star wheel 86. The latter is mounted on a shaft similar to the shaft 65 as explained in Figure 1 and is connected to an element of the main IBM machine which will give the shaft the proper amount of rotation at the proper times for controlling the movements of the paper webs and the pin wheel.

Assume that the 'wheel 86 is being rotated clockwise automatically at the beginning of the line spacing operation, the circuit through the switch 85 is closed momentarily due to the upward movement of the finger so that the electromagnet 13 becomes energized. The arm H is caused to move counterclockwise thus rotating the; ratchet wheel 68 through a correspondingly greater distance and this increased movement is carried to the sprocket wheels. [9 and the pin wheel 80.

Figure 4 shows apparatus which in some re- I spects is similar to that illustrated in Figure 3 except that a double form of electromagnet represented by thee-lemen- t 81, 88 is employed These elements 8.1 and 8.8 operate alternately. In this structure there is no necessity for a tension sprin 89 (Figure 3) for withdrawing the armature of the electromagnet because: the elements 81, 88 serve when energized to withdraw the armature of the opposite electromagnet. A double three-wire circuit indicated at 9-0 is taken from the electromagnets, this-circuit being connected to a double contact limit switch. 9|, which is different. from the previously described limit switch- 85 in that contact is made when the movable finger moves upwardly and a different contact is madewhen. the finger is permitted to move downwardly. A- star wheel 86 similar to that explained in connection with Figure 3 may be employed but the requirements. as to the operation of the starwheel are different in Figure 4 than that explained in connection with Figure 3.

Thus as the. wheel 85 is rotated clockwise the recip ocable fin er is fi t caused. to move. up-

' ardly at which time the. electromagnet 88; be-

the ratchet wheel 68 in the same direction. The

shaft I! on which the sprocket wheels is are mounted is thus given a counterclockwise rotational impulse to cause the paper to move p"- wardly a distance corresponding to the space between the successive typed lines. At the same time the gear 6'! causes the gear M to rotate clockwise and this rotary effort is transferred through the bevel gear 18 to the pin wheel 80 thus causing the. carbon ribbon to move the proper distance to the left as seen in Figure 2.

The same modified operation applies to the condition in which the successive paper forms on the machine are being substituted for one another during the eject operation in which case the star wheel 85 is rotated through a greater angular distance causing the pawl 69 to rotate comes. energized. This operation will cause the pawl 68 to rotate the ratchet wheel 68. counter clockwise anditotransfer this movement to the sprocket chains ZEI. and the pin wheel Bil as was explained in connection with Figure 3. However, as the star wheel 86 is turned a few degrees more the movable finger is permitted tov drop; thus opening the circuit of the electromagnet 88 and closing the circuit of the electromagnet 87. The latter upon being energized moves the left hand end of the pawl arm H upwardly; with a powerful action to a position ready for the pawl 69 to engage the ratchet wheel 63 when the electromagnet 83 is again energized as the resultof further movement of the wheel 86. Consquently, in the structure shown in Figure 4 the arm ll is given a strong downward movement by the electromagnet 88 uponrotation of the star Wheel 86 and the 'pawl arm is returned with a powerful movement to its initial position by the electromagnet 81' ready to engage the succeeding tooth on the ratchet wheel upon further energization of the electromagnet 88. Due to the increased positiveness of the movement of the pawl arm "H by the use of the two opposed electromagnets, the arrangement shown in Figure 4 gives a much quicker action than that shown in Figure 3.

Figures 6 and 7 show still other structure which may be employed. for moving the ribbons during the line spacing and eject operations of the. typing machine. The structures shown in these figures differ from those explained in the other figures in that mechanism is provided for driving only the ribbon feeding pin wheel and no. Provision has been illustrated by which to drive the paper fed sprocket chains. A sole oid 92 may be employed, this solenoid being secured by a.v bracket 93 to one of the side frame members 5. The solenoid is horizontally disposed and contains a slidable plunger or armature 94 provided with a rod extension 95. The latter is pivotally connected to a horizontal arm 96 which is rotatably mounted at the upper end'of a, shaft 91 carrying at its lower end a ribbon feeding pin wheel 98. A downwardly extending rod 99 is secured to the arm as he a pawl I'is pivotally mounted on the rod 99. v The arrangement is such that when the electromagnet 92 becomes energized in a manner explained hereinafter the rod moves inwardly, causing the arm 98 to rotate counterclockwise as seen from the top. This movement causes the pawl I00 to engage the teeth of a ratchet wheel IOI which is secured to the shaft 91. Thelatter is therefore given a counterclockwise rotation. As the pin wheel 98 is rotated counterclockwise the ribbon 3 is pulled. to the left. As in th case of the other constructions, the electromagnet 92 is intermittently energized, the movements taking place during the line spacing and eject operations. This can be accomplished by'meansof the switch 85, the movable contact finger of which is operated the proper number of times by a star wheel I02. The latter may be connectedon the shaft I03 of the platen I so that as the platen is rotated a few angular degrees during the l ne spacing operation, and a number of complete revolutions during theeject operation, the electromagnet 92 is energized to move the ribbon 3 the proper distance across the paper webs. As in the other figures, this ribbon may constitute a number of strands interleaved with the paper forms.

In Figure 8 I have shown a modified form of the structure described in connection with Figures 6 and 7 and which is intended to actuate the ribbon feeding pin wheel 98 when the solenoid 92 is intermittently energized through the switch 85. The pawl I00, instead of continually contacting with the ratchet wheel l0l, as in Figure 6, is now caused to be moved away from the ratchet wheel by means of a bar I03a provided with a pin I04 on which the inner surface of the pawl I60 rides.

It is apparent that as the arm 95 swings on its shaft 51 in response to the reciprocations of the rod member 95 and the further outwardly the pawl IE0 is moved by the arm 03 the fewer the number of teeth on the ratchet IBI will be causedto engage with the pawl. Consequently, the rate at which the ratchet wheel IOI is rotated will depend on the setting of the pawl member I00 which is brought about by a trans- Verse movement of the bar I03. The latter may be operated by hand to any adjusted position depending on the rate that it is desired to rotate the pin wheel 98 in response to each reciprocation of the solenoid operated rod 95.

It is apparent that the pin wheel operating structure shown in Figure 'I'may be used either with or without mechanism for providing an eject operation. If an eject operation is desired, suitable and well known mechanism may be provided for rotating the sprocket shaft I! in timed relation with the rotation of the star wheel I02.

A suitable inertia device for preventing repeated actuations of switch 85 when wheel I05 is turned above a predetermined minimum angular rate, is shown in Figure 9. Assume that a notched wheel I05 is carried on a shaft I05 which rotates in timed relation with mechanism for operating the paper feeding shaft ll. Assume also that the micro-switch 85 is connected to the solenoid 92 (Figure 7) and has the same function as was explained in connection with that figure. A heavy metal bar It! pivoted at I08 is positioned between the contact of the switch 85 and the wheel I05. A pin I09 is suspended from the bar I0! and is adapted to project into the notches H0 of the wheel. If the wheel until the latter has come to rest.

.wheel I05 is rotated rapidly, as'for exampleduring an eject operation, the, pin I09 is forced from the notch H0 and dueto the inertia of the bar I01, the pin will'not re-entera notchin the Under these conditions, theswitch 35will have been operated only once during the complete of ribbon 3 (Figure 7) 'has been pulled along the platen during'the eject-operation. 1

It is apparent that any desired relative rate of movement between, the carbon ribbon and the paper web may be obtained forla given rate of rotation of wheel I05, by predetermining the weight of the bar I01, the length of the bar including the position of the pivot, also the depth of the notches and the numb-er of notches in the wheel I65.

From the foregoing it is evident that I have disclosed inexpensive yet eifective apparatus for moving the paper webs upwardly the requisite distance during the eject operation and also for pulling the ribbon or ribbons along the platen the proper distances according to the type of operation. The control in all of these cases is constituted of a simple electrical switch cooperating with a star wheel or cam which is automatically actuated in accordance with the movements of the machine parts. The various elements which are employed for providing the paper and ribbon drives are standard parts, requiring no special machine work and these drives are of the most direct and effective character.

It will be understood that I desire to comprehend within my invention such modifications as come within the scope of the claims and the invention.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent is:

1. A typing machine including a platen, means for moving paper over the platen, a carbon ribbon extending crosswise of the paper and lengthwise of the platen, means for moving said carbon ribbon over the paper both of said paper moving means and ribbon moving means including an electromagnet in common, and means for energizing said electromagnet intermittently in accordance with line spacing and sweep feeding operations of the machine, said last mentioned means including an electrical circuit and a switch therein, also including a star wheel adapted to intermittently operate said switch in accordance with the desired line-spacing and sweep feeding operations of the machine.

2. A typing machine including a platen, means for moving paper over the platen, a carbon ribbon extending crosswise of the paper, and axially along of the platen at the typing position, means for moving the carbon ribbon during predetermined operations of the machine, said paper moving and ribbon moving mechanism including a pair of solenoids connected in opposition within an electrical system, cores slidable in said solenoids, means connecting said cores for movement in opposition to each other and a ratchet mechanism including an arm connected to said core connecting means for actuating said paper onroe 11 moving .means and saidlr'ibbon moving means, said' solenoids being adapted to be energized. in sequence to effect line spacing andsweep f eding operations of the machine. I r

3. A typing machine including a platen,-means for moving paper over the platen, means for moving a transfer ribbon transversely across-the paper axially of said platen, means: eflecting movement of said" paper moving means and said ribbon moving means inunison and including a ratchet wheel, a pawl operable to movesaid wheel in step by-s'tep increments, an electromagnet connected to operate said pawl-to ad vance said paper and ribbon, and-a second electromagnet connected to retract said pawl.

4. In atyping machine including a platen,

means for moving paper over the platen, means with line spacing and sweep feeding operations of the machine, said energizing means including a circuit, a switch in said circuit, and a star wheel adapted to intermittently operate said switch in accordance with desired line-spacing and sweep feeding operations.

means operating said first and said second means step by step in unison, including an electromagnet', a switch in circuit with and adapted to energize said electromagnet, a star wheel operable in accordance with the desired line spacing and sweep. feeding operation of the machine and an inertia arm positioned to be oscillated by rotation of'said wheel below a predetermined rate, to in- 2:0 termittentlyactuate said switch in its oscillations, said arm being insensitive to rotation of said; wheel abov said predetermined rate.

ROBERT RITZERT.

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