US2084318A

US2084318A - Paper feeding mechanism

Info

Publication number: US2084318A
Application number: US751102A
Authority: US
Inventors: Campos Francisco
Original assignee: Individual
Current assignee: Individual
Priority date: 1933-11-01
Filing date: 1934-11-01
Publication date: 1937-06-22
Anticipated expiration: 1954-06-22
Also published as: GB428062A; GB428061A

Description

n 2, 1937- F. CAMPOS 8 PAPER FEEDING MECHANISM Filed Nov. 1, 1934 8 Sheets-Sheet 1 "0 FIG. I.

INVENTOR FRANCISCQ CAMPOS ATTORNEY.

June 1937- I F. CAMPOS 2,084,318

PAPER FEEDING MECHANISM Filed Nov. 1, 1934 8 Sheets-Sheet 2 He. IQ

INVENTORI' FRANCJSCO CAMPUS BY QW W ATTORNEY June 22, 1937. F. CAMPOS 2,034,318

' PAPER FEEDING MECHANISM Filed Nov. 1, 1954 8 Sheets-Sheet s v INVENTOR= FRANClSCO cAMPos ATIORNEY June 22, 1937. F. cAMPos 2,034,318

PAPER FTEEDING MECHANISM Filed Nov. 1, 1954 8 Sheets-Sheet 4 Fic;.3.

INVENTOR FRANCISCO CAM POS TTORNEY June 22, 1937. FfcAMPos 2,084,318

PAPER FEEDING MECHANISM Filed Nov. 1, 1954 8 Sheets-Sheet 5 "fl l '4 2/ 88.9 I fig?" 4-6 I q gi Z8 58 m o a l I 60 /0 I lNVENTOR-- FRANClSCC) CAMPOS ATTORNEY Filed'Nov, 1, 1954 a Sheets-Sheet 6 INVENTOR FRANCISCO CAMPOS &

ATTORN EY June 1937- F. cAMPos 2,034,313

PAPER FEEDING MECHANISM Filed Nov. 1, 1934 8 Sheets-Sheet 7 I um 15c FIG. J50

i 86 I 1 :5 5M.

O l NVEDFTOR 5' FRANCI co CAMPOS ZBY 44f- ATTORNEX Patented June 22, 1937 UNITED" STATES PATENT orrice" PAPER FEEDING MECHANISM Francisco Campos, Paris, France Application November 1, 1934, Serial No. 751,102, r

In Great Britain November 1, 1933 Claims. (Cl. 197-128) stitutes a form having a heading or other matter occupying the same space on each form.

In printing items on such forms the first item on a form should be immediately below the heading and after a series of items has been printed on the form it'is necessary to impart a long feed movement to the web of paper to bring the next form into position to receive its first item immediately beneath the heading. Consequently the extent of the long feeding movement will vary with the number of items printed on each form and is equal to the total form length, less the length occupied by the items printed on the form.

According to the present invention the extent of the long feed is controlled by the paper itself which, to this end, is provided with cut away portions and is given a long feeding movement by feed rolls narrower than the cut away portions and acting on the paper in the path of the cut away portions, whereby when the cut away portions reach the feed rolls, the latter no longer grip the paper, which consequently ceases tomove despite the fact that the rolls may continue to rotate. In the present instance these cut away portions are shown as round holes punched out at the line of intersection of the bill heads or the like which make up the web.

Apparatus according to the invention may comprise line spacing mechanism for feeding the sheet line by line during the item printing operation and relatively narrow auxiliaryffeed rolls inoperative during the line spacing operation, but adapted to grip the paper to pullthe latter through the line spacing mechanism until movement of the paper is arrested owing to the cut away portions reaching the auxiliary feed rolls.

The auxiliary feed rolls may be'hand or power operated and in the case of a machine printing items together with a total thereof, the auxiliary feed rolls may be caused to grip the paper and rotate to effect a long feeding operation automatically on the occurrence of a total taking operation.

Alternatively when a form length has been filled with'items, the auxiliary feed rolls may be brought into operation automatically to feed the sheet iorwardto the extent of the heading on the next sheet. To thisend acyclic control de-,

vice asdescribed in British Patent specification No. 328,319,. may be employed to actuate the auxiliary feed rolls after a predetermined number of operations of the machine, 1. e. a number equal to the number of items which one form length is capable of receiving. The invention also includes as a further feature means for feeding a tally roll or journal sheet past the platen simultaneously with the form sheet and for maintaining the journal sheet a stationary during the long feeding movement of the form sheet.

-T0 this-end, the journal sheet and form sheet are led from their respective storage rolls through the platen and line spacing mechanism together, two ink ribbons being provided to effect printing on both sheets. The journal sheet is then led to a take-up roll while the form sheet is led to a long feed mechanism as described above.

As the first item of one series must appear on the journal sheet immediately below the last item of the preceding series, it is not required to auxiliary feed rolls to grip the form sheet may also be connected to the line spacing feed rolls so as to cause these to separate when the auxiliary rolls grip the paper.

One form of the invention will now be described by way of example as applied to a bookkeeping machine of the kind described in British Patent specification No. 377,957.

This form of the invention, however, is embodied in paper feeding mechanism, which also incorporates means for feeding ledger sheets as claimed in British Patent No. 428,062.

' Accordingly, in the presentspecification both the mechanism according to the present invention and the mechanism'claimed in the cited British Patent 428,062 will be described and illustrated, although the mechanism according to the present invention can,.if desired, be construct'ed as an entirely separate device without to the accompanying drawings which show by engagement. After passing between the rolls 6 7 way of example preferred embodiments thereof.

In the drawings: Figs. 1 and 1a together illustrate the mechanism in side elevation Figs. 2 and 24: together illustrate the mecha-' nism in plan;

Fig. 3 shows the mechanismin front elevation;

Fig. 4 is a detail view of the feed rolls in their normal position;

Fig. 5 shows the feed rolls in the positions which they occupy during a long feeding operation;

Fig. 6 shows the feed rolls in the positions which they occupy when feeding a ledger sheet into the platen;

Fig. 7 is a view showing the form sheet passing between the long feed rolls;

Fig. 8 is a detail view showing the mounting of one of the small rolls by means of which the long feed is effected; I

Fig. 9 is a diagram showing the path of the ribbon through the mechanism; and

Fig. 10 is a cross section on the line X-X of Fig.2 showing the device for punching holes in the ledger sheets and thesensing pin and associated mechanism cooperating with these holes to stop the ledger sheet in the desired position.

Fig. 11 is a plan view of a stack of fan fold sheets showing the holes for controlling the positioning of the sheets.

Fig. 12 is a view of the report printed on a fan fold form showing also the relation between the fan fold feed rolls and the feed control holes.

In the drawings like reference numerals designate the same or similar parts.

In the construction shown in the drawings the journal sheet I and the form sheets 2 are led from their respective rolls (not shown) under the platen 140 (Figs. 1 2, 4 and 5)' which is attached to the lever 889 secured to a shaft 690. By rock-.

scribed.

, In passing under the platen each of the two sheets and 2 passes over a length of ribbon 6a, 5b, (Fig. 9) respectively which may be arranged and fed in any known manner.

1- Since, however, the mechanism illustrated in the drawings also embodies apparatus for feeding a duplicate ledger sheet which forms the subject matter of the claims of the cited British Patent No. 428,062, the ribbon lengths in. and 6b are made continuous with a third ribbon length lc.

The ribbon however serves only to effect printing on the duplicate ledger sheets as will be hereinafter described, and would be omitted if the apparatus were restricted solely to the subject- -matter. of the present invention, namely the 'means for feeding the sheets I and 2.,

The two sheets I and 2 are led from the platen between a pair of main feed rolls comprising a driving roll 6 (Figs. 3, 6 and 7) and a driven roll I. The drivingroll 6 is mounted on a shaft 6 and. may be moved step by step by any known line spacing mechanism, such for example as that described for moving the roll Ill in British Patent specification No. 377,957.

The driven roll I is freely mounted between a pair of arms 9 pivoted on a shaft .IQ fixed to the frame of the machine, a spring being provided which tends to maintain the rolls 6 and I in and I the journal sheet is then led round the driving feed roll 6 in close contact therewith and after passing under a guide roll I 2 is led to a storage roll (not shown).

The form sheet 2 after passing between the feed rolls 6 and I is led between two guide plates shown) I The outer guide plate l5 for the form sheetis curled over at its upper end to form a hinge bead i5a through which passes a rod I51) carried in a bracket I5c there being provided a spring l5d whereby the plate I6 is maintained in position against the sheet 2. a

Owing to the hinge construction the plate I! can be swung about the hinge rod |5b to enable the end of a new roll of paper, constituting the ribbons 5a, 512. After the printing of each item the main feed roll 6 advances the two sheets simultaneously one line space. v After the series of items has thus been printed it is desired to leave the journal sheet I in position so that the first item of the next series will be printed.immediately below the last item of the preceding series, but it is desired to imparta long feed to the form sheet 2 to an extent equivalent to the unused portion of the first form, together with the-heading on the second form, in order that the first item of the second series may be printed immediately below the heading on the second form.

In order to effect this long feeding operation a pair of auxiliary feed rolls 2| is disposed adjacent to but normally separated from the small rolls I! for the form sheet 2 and means is provided for separating the mainfeed rolls 6 and 1 and moving the auxiliary-feed rolls 2| to cause the form sheet 2 to be gripped between the auxiliary feed rolls 2| and the small rolls I'I over which the sheet 2 passes. Rotation of the auxiliary feed rolls 2| then feeds the form sheet to the extent of the desired feed, the length of this feed being deter- .mined as described below, while the journal sheet remains stationary.

'Ihe auxiliary feed rolls 2| are secured to a from a pulley 30 driven from a source of power in the machine, such as a motor, through a clutch device which will be described later.

In order to determine the length of the long feed imparted by the auxiliary feed rolls to the form sheet, the latter is provided with holes 3| disposed in those parts of the sheet over which the auxiliary rolls 2| operate, and these auxiliary rolls are made of a width smaller than the width of the holes. Consequently whether the auxiliary feed rolls 2| continue to rotate or not, the long feed movement of the form sheet willcease as soon as the holes 3| in the sheet meet the rolls 2|. When this occurs the paper ceases to be gripped between the small rolls l1 and, the auxiliary rolls 2| which meet through the holes 3| without touching the paper, of which the movement consequently ceases. The holes 31 in the paper are, therefore, disposed at intervals in the sheet equivalent to the length of 'one form, their actual positions being at the bottom of the heading of each form.

After the long feeding operation has been completed, the auxiliary feed rolls 2| are separated from the small rolls l1 and the main feed rolls and 1 are brought together again.

Before printing the first item of the next series a feed equal to one line space is effected by the main feed roll 5 to bring the journal sheet into position to receive the first item immediately below the last printed item. As this feed is also imparted to the form sheet the holes controlling the extent of the long feed may be placed on a line with the bottom of the form heading 'so that the form sheet stops after the long feed with the bottom of the heading in printing position. The subsequent single line feed will then bring the form sheet in position to receive the next item just below the heading as is desired.

Preferably a single .controlmechanism is provided for separating the main feed rolls 5 and I and simultaneously moving the auxiliary feed rolls 2| to grip the form sheet 2 or vice versa. This control mechanism will now be described.

'I'hemain feed roll 5 and its line feeding mechanism is carried between a pair of arms 32 freely mounted on the shaft 890. Secured to the shaft 890 is a bell crank of which one arm 34 lies under a pin 35 on one of the arms 32. The other arm 35 of the bell crank is connected by a-rod 31 to a lever 38 pivoted to the machine frame at 39.

Pivoted to the machine frame at 40 is a control handle 4| having a relatively long lateral arm 42 and a short lateral arm 43.

This handle 4| is adapted to control both the mechanism for long feeding the form sheet 2 and simultaneously maintaining the journal sheet stationary, and also the mechanism for .feeding the duplicate ledger sheets which forms the subject matter of the claims of cited British Patent No. 428,062.

Certain parts of the control mechanism embodying the handle 4| (e. g. the long arm 42) therefore pertain only to the ledger feed mechanism while other parts are associated onlywith the mechanism for feeding the sheet 2 and simultaneously maintainingthe sheet stationary.

Thus by turning the handle 4| counter-clockwise in Fig. 2 the duplicate ledger sheet is fed in and the sheets and 2am unaffected,

whereas by turning the handle clockwise the} duplicate ledger sheet is fed out reversely, while the form sheet 2 is given a long feed movement, the journal sheet I being unaffected. .4

At the present stage, those parts of the control mechanism which are used for the control of the sheets and 2 only will be described, and later, in order to render the description of the mechanism complete as a whole, those parts thereof which are used for controlling the ledger feed will be described.

When the handle 4| is turned clockwise in Figure 2'the short arm 43 engages with a pin 44 on the underside of the lever 33 and turns this lever in a counter-clockwise direction, whereby the rod 31 is pulled to the right whereby the bell crank 34, 35 is turned counterclockwise and the arms 32 are raised to lift the feed roll 5 clear of the sheets and 2.

The normal position of the feed roll 5 and its associated mechanism is shown in Figure 4 and. the position of these parts after the feed roll 6 has been raised by movement of the handle 4| as described above is shown in Figure 5.

The extent of upward movement of the. roll 5 is such that when the roll '5 is in the raised position shown in Fig. 5 the "bead |5a on the guide plate |5 comes into register with notches 23a formed in the arms 23 supporting the auxiliary feed rolls 2|.

Attached to a block 45 secured to the frame is a bracket 46 and connected between the top of this bracket and a pin 48 on a rod 43 connecting the arms 23 is a spring 50. When the bead |5a comes into register with the notches 23a the arms 23 are rocked counterclockwise about the shaft 24 whereby the auxiliary rolls 2| are brought into contact with the form sheet 2 which is thus gripped between the auxiliary rolls 2| and the small rolls H.

The auxiliary feed rolls 2| are then rotated and the long feeding movement of the form sheet occurs, this ceasing when the holes 3| in the sheet 2 reach the auxiliary rolls 2|, whereupon the rolls I1 and 2| meet through the holes 3| and no longer grip the paper.

The auxiliary feed rolls 2| are preferably -set in motion by the same movement of the handle 4| as that which raises the feed roll 5. To this end there is mountedon the pivot 40 below the handle 4| a triangular member 5| having a tail 52. The tail 52 extends between two

screws

53, 53a, projecting from the handle 4|.

When the handle is turned clockwise to set the mechanism for a long feeding operatiomthe lever 38 is first operated as described above and then towards the end of the movement thescrew 53- engages with the tail 52 and further-movement of the handle rocks the triangular member 5| in a counterclockwise direction, the extent ofmovemachine frame. I

link 55 to a lever 55a. for operating 'aclutchyto connect the pulley 30 from which the rolls 2| are driven to a pulley 55 driven from a constantly rotating shaft I30 which may be driven by any suitable prime mover, through a belt 51.

The pulleys 30 and 55 (Figs. 4,15, 6 and 10) are provided with clutch dogs 35a and 55a respectively and the clockwise movement of the handle 4| which raises the feed roll 5 into the position shown in Figure 5 also moves the pulley 30 so i that its dogs 30a engage with the dog's 55a on the driving pulley 55 whereby the auxiliary feedrolls 2| are rotated.

Fromthe foregoing description it will be seen normal position thereby disengaging the that for each series of items the form sheet'is fed to the same extentwhatever the number of items on the sheet, and this feeding operation is divided into two portions, one comprising the line by line feeding operation occurring during the printing of items, and the other the longfeed to an extent equivalent to the distance between the last item of the series and the next pair-of holes in the sheet.

During the long feeding movement of the form sheet 2 the journal sheet I is unaii'ected since the small rolls fl do not touch the journal sheet and during the long feeding movement the feed, roll 6 is not driven but is free to rotate idly.

After the long feeding movement has ceased the handle ll is returned to its normal position whereupon the-feed roll 8 descends to its normal position under the action of gravity. This movement also returns the lever 28, and the pin 44 on this lever returns the triangular plate Ii to its clutch members a, a.

The foregoing has described the long feed mechanism according tothe present invention. In order to render the operation of the mecha-- nism clear as a whole the ledger sheet feed mechanism claimed in British Patent No. 428,062 will now be described. 7

These ledger sheets II are folded double prior to insertion in the mechanism and in order to feed the double sheets ii to the platen a driving feed roll 59 is provided on the shaft 24 and is normally spaced away from a driven feed roll 60- 'mounted on a shaft 8| carried between the pair of arms 0 which are acted upon by the springs I l. Normally the feed roll I carried by these arms bears against the paper passing round the feed roll 6 whereby the feed rolls It and "are held apart. v

With the feed rollsin this position the sheet 58', which is first folded double so that its upper edge Ila projects beyond the lower edge, is fed by hand between the separated rolls '0 and II so that the upper edge a passes over a comb plate 62 while the lower edge passes beneath said plate.

The comb plate 82 extends across the path of the paper and is carried at the ends of arms it freely pivoted at 84 to the arms 32 (see Fig. 10)

Extending upwardly from one of the arms 63,

which carry thecomb plate 62, is a rod-SI connected by a spring to a pin 61 projecting from the associated arm 32. When the arms 32 are in their lowermost position shown in Flgureai and 10 the comb plate 2 is down in its lowermost position.

On the underside of each arm 03 is a' lug "a a and between each'lug 63a. and the respective arm however, may be used entirely by itself, in which case it willbe understood that the ribbon'may be fed back and forth from two spools in the manner of an ordinary typewriter ribbon.

Whether the ribbon la is used by itself, or constitutes a continuation of the ribbons la, lb this ribbon to passes from one spool Ill over a guide roller I0 carried at the lower end of a plate "ll depending from one of the arms 32 (Figs. 1 and 9) supportingthefeedroll Candthence over aguide '38 and turns opposite side of the machine frame and thence over another roller ll supported at the lower end of .a plate 15 depending from the other arm 32 supporting the roll 6. I

As can be seen from Fig.9 the

rolls

10,14, are located below the rolls l2, 13, when the feed roll 6 is in its lowermost position. By means of this arrangement the ribbon to is maintained close to the type elements when the feed roll 8 is in the'lowermost position shown in Fig. 4, i. e. the printing pomtion.

If, as shown in the drawings, the ledger feed mechanism claimed in the cited Patent 428,062 is incorporated with the mechanism claimed in the present application the ribbon 5c after passing over the roll I4 is passed over a roll Ila on the plate II and is thenled across the machine to form the ribbon length 5b; then over a roll 'Ilb on the plate II and back across the machine to form the ribbon length 5a, after which it passes over a roll Me on the plate I5 and thence to the plate 82, it is fed under the platen to the printing position automatically by means of the feed rolls 59 and. In'order to permit this feeding operation it is necessary. to raise the ribbon be from the type elements, since the upper .half of the double sheet passes over the ribbon while the lower half under it.

' To this end the arms 32 supporting the feed roll 6 are raised to their uppermost position as shown in Fig. 6. With the feed roll 6 in this position the springs H turn the arms 9 clockwise until the doublesheet is,gripped between the rolls IO and 00. Simultaneously the lifting of the arms brings the ribbon guide rolls III, I4 up into a position level with the rolls I2 and It so that the ribbon lying across the' lugs 63a on thearms 63 supporting the comb plate 82 is fingers 62b to permit the lower m1: of the double sheet to pass between the type elements and the ribbon.

At the same time the raising of the arms 32 which carry'rolls Ila, 14b, 14c over which the ribbons Ia, 5b pass has lifted the other two ribbons Ia, Ib clear of the ribbon to so that the upper half of the sheet ll can readily pass above the ribbon lc.

Thelifting of the feed roll 6 to the highest position (Fig. 6), is effected by moving the handle ll counterclockwise in Fig. 2. When the handle 'is thus moved counterclockwise the longer arm 42 onthe hand] engages the pin 31aon the lever e lever 38 in a counterclockwise direction, whereby the arms 32 carrying the feed roll I are raised through the agency of the rod 31 and bell crank I], 28 as already described.

The arms 32 and, therefore, the rolls 6' are however lifted higher when the handle ii is turned counterclockwise than when it is turned clockwise, the stop 54a which limits counter- .1

clockwise movement of the handle being spaced further from the handle than the stop 54. Counterclockwise movement of the handle raises the v roll 6 to the position of Fig. 6 whereas clockwise .permits the springs to rock the arms 9 clockwise until the sheet 58 is gripped between the

rolls

59 and 6|]. 1

At the same time the movement of the handle 4| which raises the roll 6 to the highest position shown in Fig. 6 is utilized to connect the roll 59 to a source of power to rotate said roll in a direction to feed the double sheet 58 into printing position under the platen 140.

To this end the pulley 30 which is used to drive the roll 2| is provided with clutch dogs (not shown) on the side opposite from the clutch dogs 30a already described and the counterclockwise movement of the handle 4| shifts the pulley 30 to a position in which the dogs 30b engage with clutch dogs on a pulley 18 driven by the belt 51 already referred to..

When the handle 4| ismoved counterclockwise the screw 53a, towards the end of the movement,

engages the tail 52, rocking it counterclockwise, whereby the pulley 30 is shifted to cause its dogs toengage with the dogs on the pulley I8.

The belt 57 passes over a pulley 19 mounted on shaft I90 which is rotated by any suitable prime mover, and also over both pulleys 56 and I8 and over a tensioning pulley 80, the belt passing over the

pulleys

56 and 18 in opposite direction, so that one pulley 56 is rotated in one direction and the other 18 in the opposite direction.

Thus the pulleys 56 and I8 constitute a reversing gear controlled by the handle 4| When the pulley 39 is moved so that its dogs engage with the dogs on the pulley 18 as just described, it is rotated in a direction such that it turns the roll 59 in a clockwise direction to feed the double sheet 58 under the platen 140.

The'double sheet is fed under the platen to anextent determined by a sensing pin which will be later described and the handle 4| is then returned toits middle position, whereby the roll 6 is brought down .on to the sheets, there being four sheets between it and the roll 1, i. e. the journal sheet the form sheet 2, and the two portions of the double sheet 58.

Printing on the sheets is now effected by actuation of the printing hammers. This operation forms no part of the present invention and will not be described here, save to state that the printing can be carried out by the mechanism described in British Patent specification No.

the ra sing of the roll 6 permits the roll 60 to rise until the sheet 58 is gripped between this roll 60 and the roll 59.

Simultaneously the clockwise movement of the handle 4| causes engagement of the dogs on pulley 30 with the dogs on pulley I8, whereby the roll 59 is rotated to feed the double sheet .58 out in a direction opposite from that in which it was fed in. Further, the auxiliary rolls 2|,being in engagement with the form sheet 2, the latter is given a long feeding movement until arrested by the holes 3| registering with the small rolls I! as already described.

Thus, movement'of the handle 4| in a clockwise direction not only feeds. the double sheet 58 out but also effects a long feeding movement of the form sheet 2.

In connection with the stopping of the sheet 58 when it reaches the printing position, it should be noted that the invention is mainly applicable to the case in which sheets already bearing a series of items are to be inserted in the'machine for the purpose of having a further item or items printed below those already existing. In such a case the sheet must" be fed in until it reaches a position in'which the printing line is immediately below the last printed item on the sheet.

To this end a punching device is provided which, at the-printing of each item, automatically punches a hole in the margin of the sheet in a predetermined position, and further a spring influenced sensing pin 8| is provided to sense the hole already punched at] the last printing operation and on passing through the hole stops rotation of the feed roll 59, thereby arresting the sheet 58.

In the'construction shown in the drawings the punching mechanism comprises a hollow punch 82 (Fig. 10) slidable in a vertical tubular guide 83 and carrying an upwardly directed lug 84. Within the hollow punch 82 slides the sensing pin 8|, of which the operation will be described in detail later.

' The lug 84 is provided with a 'slot with which engages a guide pin 85 and the lug is pivoted at its upper end to a lever 86 pivoted at one end Patent Specification No. 377,957.

The punch is thus operated each time a'balance is printed and a hole produced in the double sheet 58 in a particular position relative to each balance printed.

This hole is utilized in conjunction with the sensing pin 8| about to be described, to arrest the movement of the'double sheet 58 when being fed into the platen.

The sensing pin 8| is mounted to slide within the hollow punch 82 and is pivoted to the end 'of an arm 92 secured to a shaft 93 carried in bearings 94 on the machine frame. Also secured to thisshaft is a pawl 95 adapted to co-operate with a ratchet 96 on the shaft 24 of the roll 59.

The pawl95 has a tail 9! against which bears the end of a rod 98, of which the other end passes through a lug 99 on'an arm |8| secured to the triangular plate 5| which is operated by the control handle 4|.

Secured to the rod 98 adjacent the lug 99 is a collar 82, so that when the handle 4| is turned in the counter-clockwise direction to raise the roll 6 to the highest position shown in Figure 6, and also to. feed the sheet 58 into the platen, the arm |8| is turned and its lug .99 acts on the collar 82 on rod 98 to pull rod 98 to the right in Figure 2. By this means the end of rod 98- is removed from contact with the tail 9! of pawl 95, whereupon a spring I03 attached to the tail '91 of pawl 95 and to a collar llll on the rod 98,

rocks the shaft -93'until the sensing pin 8! engages with the sheet 58. Engagement of the pin 8| with the sheet thus maintains the pawl 95 out of engagement with the ratchet 98 during the operation of feeding the sheet 58 into the platen.

As soon as the sheet has been fed until the hole which was last punched therein registers with the sensing pin 8|, the pin 8| passes through the hole under the action of the spring I03 which- 4 rocks the pawl 95 and shaft 93 until pawl 95 engages with the ratchet 96 and arrests the rotation of the shaft 24 and feed roll 59 and consequently also arrests the feed of the sheet 58.

When the handle 4| is returned to its normal position the rod 98 is also returned by a spring In order to ensure withdrawal of the punch 82 a pin I86 is secured to the lever 9M which, as

, and its end Ill positively rocks the bell crank arm 90 to withdraw the punch if. this has not already been effected by the spring I I2.

While there are above described but a limited number of embodiments of the invention, iti's possible to produce still other embodiments without departure from the inventive concept above "disclosed, and it is, therefore, desired that only such limitations shall be imposed on the appended claims as are stated therein, or required by the prior art.

I claim:- l. A paper feeding device comprising in combination, means for feeding a duplex sheet of record paper into a printing mechanism in a di- 'rection opposite to that of normal feeding, means for separating said duplex sheet to receive .a duplicating medium, said means comprising a dividingelement positioned adjacent an ink ribbon to cause the upper and longer fold of said duplex sheet to pass above said dividing element, and above said ink ribbon while the lower and shorter fold passes below, and means for feeding said sheet into printing position in one direction and out of printing position in the opposite direction.

2. A paper feeding device comprising the combination of means for guiding a plurality of continuous paper webs between. a plurality of ink ribbons, means for feeding one of said paper webs alternately either line by line or continuously over the space of a plurality of lines, means for feeding a duplex sheet of record paper-into a printing mechanism in a direction opposite to that of normal feeding, means for separating said duplex sheet to receive a duplicating medium, said means comprising a dividing element positioned adjacent anJnk' ribbon to cause the upper andlonger fold of said duplex sheet to pass above said dividing element, and above said ink ribbon while the lower and shorter fold passes below, means for feeding said sheet into printing said duplex sheet to receive a duplicating medium, said means comprising a dividing element positioned adjacent an ink ribbon to cause the upper and longer fold of said duplex sheet to pass above said dividing element and above said ink ribbon while the lower and shorter fold passes below, and manipulative means for controlling the functions of the above named means.

4. A paper feeding device comprising in combination, feed rolls adapted to feed a. continuous record sheet line by line, feed rolls adapted to feed a bill form line by line during item entry and continuously over a plurality of lines when the entries on a bill are complete, feed rolls adapted to feeda duplex record formv into printing position in a direction opposite to normal feeding and out of printing position in the normal feeding direction, clutch controlled power driven means for effecting the continuous feed of said bill form over a plurality of lines and the feeding of said duplex form in both directions and a single manipulative means for effecting control of said clutch and to position' said feed rolls appropriately to permit the above named feeding operations.

5. A paper feeding device comprising in combination, a plurality of pairs of feed rolls; mechanism adapted to effect step-by-step actuation of one of said pairs of rolls; means for effecting the actuation' of the other of said pairs of feed rolls; a prime'mover; a clutch device for. connecting said prime mover and said means for actuating said feed rolls; and means settable in three positiohs, in the first of which said first mechanism only is rendered effective, in the second of which said means renders said first mechanism ineffective and causes one of the other of saidpairs of feed rolls 'to be clutched to said prime mover and to be operated in a direction opposite to the normal feeding direction, and in the third of itantly causes the actuation of another of said pairs of feed rolls.

' FRANCISCO CAMIPOS.