US2199556A - Paper feeding device - Google Patents

Description

y 1940. F. M. CARROLL 2,199,556

PAPER FEEDING DEVI CE Filed Oct. '7, 1938 5 Sheets-Sheet l ATTORNEY y 1940. E F. M. CAR'RQLL 2.199.556

PAPER FEEDING DEVICE Filed Oct. 7, 1938 5 Sheets-Sheet 2 b u n n w: a f u t g C y 3) Q v a Z 4 F E E E5 3 g [1% I l] FIG. 3.

U) P g, INVENiOR ATTORNEY y 1940. F. M. CARROLL PAPER FEEDING DEVICE Filed Oct 7, 1938 5 Sheets-Sheet s INVENTOR ATTORNEY y 1940- F. M. CARROLL 2.199.556

PAPER FEEDING DEVICE Filed Oct. 7, 1938 5 Sheets-Sheet 4 FIG. 8.

ZWQY XM DATILORNEY y 1940. F. M. CARROLL 2,199,556

PAPER FEEDING DEVICE Filed Oct. 7, 1938 5 Sheets-Sheet 5 FIG. 11.

/ INVYENTOR ALI'TORNEY Patented May 7, 1940 UNITED STATES PAPER FEEDING DEVICE Fred M. Carroll, Binghamton, N. Y., assignor to International Business Machines Corporation, New York, N. Y., a corporation of New York Application October 7, 1938, Serial No. 233,736

17 Claims.

This invention relates generally to paper feeding devices, and, more particularly to auxiliary feeding means for correcting the position of record sheets before printing.

5 The connected forms of a continuous record sheet are usually pre-printed with headings which are to be skipped when listing items on sheet forms. For the purpose of skipping such portions of the forms, a long-feeding or ejection operation is initiated when a total or last item is printed at the bottom of a form. Devices for producing such long feeding operations are illustrated in U. S. Patents 2,066,029 and 2,066,305. It is important that the continuous sheet be brought to an accurate position before printing the first item on a form, especially on ruled forms where the ruling lines would interfere with inaccurately positioned characters. The devices of the present invention are devised to bring the 1 record sheet into the correct initial printing position when called into action at the end of each long feed operation.

An object of the present invention is to provide means for sensing the position of feed con- ;5 trol indicia such as staples connecting manifold sheets of continuous forms, and devices controlled by said sensing means for shifting the forms into a correct printing position.

Another object of the present invention is, to provide controls for delaying the operation of auxiliary feed devices until printing is about to be initiated.

A further object of the present invention is to provide sheet positioning devices which are called into operation only at the end of a long feeding operation. F

Another object of the invention is the provision v of paper spacing operating means connected to the plunger of a solenoid, with an automatic circuit breaker for initiating successive operation of the solenoid to. cause rapid successive operation of the spacing means.

A feature of the present invention is the provision of an alternative sheet position sensing 5 device in the form of a contact opening member that engages a feed control indice in the form of a perforation in the sheet. The contact is arranged in series with the auxiliary feed solenoid so that the solenoid is operative to cause sheet feeding until the positioning perforation is engaged by the contact opening member.

Fu ther objects of the instant invention reside in any novel feature of construction or operation or novel combination of parts present in the embodiment of the invention described and shown in the accompanying drawings whether within or without the scope of the appended claims and irrespective of other specific statements as to the scope of the invention contained herein.

In the drawings: 5

Fig. 1 is a plan view of the auxiliary feed devices.

Fig. la is a sideelevation view showing the long feeding or ejection devices.

Fig. 1b is an elevation view of the line spacing devices.

Fig. 2 is a side elevation view of the auxiliary feed devices.

Fig. 2a is a detail view of a portion of the manifold record sheets'held together with staples.

Fig. 3 is a detailed view in front elevation showing the operating pawl and ratchet of the auxiliary feeding devices.

Fig. 4 is a sectional view showing the staple sensing devices.

Fig. 5 is a sectional view taken along the lines 5-5 in Fig. 4.

Fig. 6 is a wiring diagram of the electrical controls connected with the operating solenoid.

' staple sensing means including a pair of sensing brushes.

Fig. 12 is a side view of the sensing brushes. Referring to Figs. 1 and 2, it is noted that a platen 5| is mounted on a shaft 69 and suspended from carriage side frames 51. The slde frames 51 are connected to the main carriage frame 26 to which there is also attached a side frame 2i.

carrying the auxiliary feed devices The side frames 2| (the left one of which is not shown) are notched at 22 to locate a grooved shaft 23 connected between a pair of triangular paper supports 24. A pair'of shafts 25 and 26 are connected to the opposite ends of the supports 24 to form a supporting means for brackets 21,

which are secured to the bottom of the record sheet supports 28. Turning to Fig. 1, it is noted that a plurality of such supports 28 are provided to support the record sheet as it is fed down to and around the platen 5|. The end support 28 is formed with a side piece 29 for conflning'the record sheets in position laterally.

A stud 38, Fig. 2, is mounted on side frame 2| in position to contact the side of the paper support 24 so that the guides 28 are positioned to direct the record sheets as indicated by the arrows on Fig. 2. Another stud I8 cooperates with a tailpiece I9 on support 24 to stop the sheet holding unit when it is swung away from the platen. The sheet is threaded into the guides at 3|, and carried to the left, down over the vertical guide 32, and then down and around the platen and up over the table 33, and along the upper edges of a series of movable sheet return supports 34. These sheet supports 34 are mounted on a pair of shafts 35 and 36, located in the side pieces 29 of the support members 28. In Fig. 1, it may be noted that the supports 34 areshap'ed in the form of a U with the sides perforated to receive the shafts- 35 and 36 and slide along these shafts to be positioned laterally wherever necessary to support the rearwardly moving web of the printed record sheets.

One of the supports 34 is formed with a slot 48 to provide an adjustable mounting for the holder 31 of the staple sensing contact members 38 and 39. The slot 48 is of such width that the grooves 4| and 42, Fig. 4, of holder 31 fit therein and engage the paper guide 34, but free thereon to be moved back and forth until correctly positioned, and then secured into that position by means of thumb screws 43.

In Fig. 5, the sensing members 38, 39 and the insulation support 31 therefor are shown with the lower part of the support 31 cut out with a recess that receives the upper ends of the sensing members, and these ends are attached to the support by means of screws 45, leading to wiring terminals 44. In this view it is seen that the set of record sheets or continuous forms 46 is so positioned that the staple 41 thereon is directly under the lower flexible end of the contact members 38 and 39. A strip of insulation material 48, separates the staple from the top of the paper guides 28. Referring to Fig. 1, it may be seen that the strip of insulation 48 is long enough so that the sensing members may be moved to any position along slot 48, depending upon the relative position between the staples and the first line of printing, without contacting guide 28. Turning again to Fig. 5, it is noted that the direction of feed of the record sheets 46 is from right to left, and that when the sheets are fed to the correct printing position for the first line, the staple will assume the dotted position 49. However, if a long feed operation fails to bring the record sheets up to the correct position, then the staple will be brought under the sensing members to establish a circuit as shown, and initiation of the operation of the auxiliary feed is called into play electrically, and the sheets will be fed from right to left until the staple is moved over to the position 49, thus breaking the circuit between the contact members and stopping operation of the auxiliary feed.

During ordinary paper feeding operation, the record sheets are moved by one of two different feeding means, a line-spacing means, or a long feeding device such as those illustrated in Figs. 1b and 1a, respectively. These devices are described in detail in the patents mentioned hereinbefore and in copending application Serial No. 1, filed January 1, 1935, so that for the present purposes it will only be necessary to give a general outline of the mode of operation employed in each case.

Referring to Fig. 1b, it is seen that when a line space magnet LSM is energized, its armature |6| is rocked to release a pawl I55 which then engages a constantly rotating ratchet gear I52. Since pawl I55 is secured to c'am I54, this cam is then connected for rotation, and serves to operate a bell crank I68 in a counterclockwise direction. Associated with the upper end of the bell crank is one end of a link I12 which is pivoted at the right to a rocking frame I15 loosely fulcrumed on the platen operating shaft I16. A pawl I11 pivoted at I18 on frame I 15 cooperates with a ratchet gear I19 attached to the operating shaft I16, so that when the parts are rocked by the cam, a line space movement is imparted to the shaft I16 which controls the platen feed.

The long feed devices, illustrated in Fig. 1a, are also designed to influence the movement of shaft I16, and turn it an amount sufficient to feed the sheets, eject a form and skip the heading space as shown diagrammatically in Fig. 2a. An operation of these devices is initiated by the energization of an eject magnet EM. This magnet is activated when the last line of a formis reached, or when the total is printed on a form.

Then its armature releases the clutch pawl I99 so that it may engage the constantly rotating ratchet wheel I91. Since pawl I99 is attached to cam plate 288, this plate is turned through one revolution in a clockwise direction each time the magnet is energized. Mounted eccentrically on pivot 2II on the side of plate 288, is one end of a link 2|8, which at the left end is pivotedon a stud 2 I2 on an oscillating operating frame 2I3, pivoted at 2I4| on the side frame of the carriage. This oscillating frame 2I3 is provided with a plurality of operating teeth, 2I4, adapted to engage teeth in a block 2|5 suspended on the end of an operating link 2I1 connected to a gear segment 220 pivoted at 22I. Meshing with the teeth on segment, 228 is a pinion 222 fastened to shaft I16. This shaft also carries a gear I81 which is in engagement with an idler gear I88 which in turn meshes with a gear I89 fastened to the platen 5|. By means of these connections, each time the cam plate 288 is rotated, the operating frame is rocked in a clockwise direction and through link 2|1, gear segment 228 is rocked in the same way to turn the gearing and rotate the platen, so that the record sheets thereon are fed through a distance long enough to carry it from the last line of one form to the first item or address printing line of the following form.

At the end of each ejection operation of the long feed cam 288, a cam extension 298, Fig. la, strikes a contact closing member 218 to close contacts 29| (Fig. 6) and render effective the staple sensing devices in a manner to be described more fully hereinafter, with reference to the wiring diagram in Fig. 6.

When the long feeding operation is finished, the record sheets 46 are then positioned as shown, Fig. 5, with the staple 41 at some point under the sensing members 38 and 39. It is then necessary to call the auxiliary feeding devices into play to feed the record sheets further so that the staple assumes the correct starting position 49 before printing is initiated.

When the long feeding operation is terminated, and the staple 41 is sensed by the sensing members (Fig. 5), then the solenoid S, Fig. 2, is energized to operate the auxiliary feeding devices. This solenoid S is mounted on a bracket 6|, attached to the side frame 2|. In the coil of the solenoid there slides a plunger 62 which is slotted at the lower end to receive one end of a link 63. A pin 64 is fastened between the plunger and link to form a pivotal connection where the two parts meet. Attached to this stud 64 is a spring 65 which tends to pull the plunger 62 out of the solenoid and, at the same time, force a shoulder 66 on link 63 against an adjustable eccentric stop 61, held on side frame 51 by means of a screw.

The lower end of link 63 is loosely pivoted at ,1! onthe end of an arm 12, loosely pivoted on a stud 13, fastened on the side frame 51. Arm 12 is joined to another arm 14 by means of a collar 15. Thus, the two arms are connected to operate as a bell crank when moved by link 63. At the upper end of arm 14 there is pivoted at 16 an operating pawl 11 which is designed to engage teeth 18, formed on the periphery of a disk formed on the platen adjusting knob I93. A coil spring 19 is wound around pivot 16, and presses against pawl 11 to urge it in a clockwise direction toward the teeth 18. However, when the parts are in the normal position, the side of pawl 11 abuts against a pin 89 extending from the side of frame 51. This pin holds the pawl out of engagement so that the ordinary platen moving operations may be performed when the auxiliary correction feeding devices are not in operation.

Each time the solenoid S is energized, the plunger 62 is drawn to the right, Fig. 2, against a stop 8|, fastened in the end of the solenoid coil. This movement is imparted to the link 63 which then rocks the arms 12 and 14 in a counterclockwise direction, moving the pawl 11 away from the stop pin 89, and allowing it to engage the ratchet 18 so that the connected gearing may turn the platen a slight amount in a clockwise direction to feed the record sheet. This movement is carried on against the tension of spring 65 so as soon as the solenoid is deenergized, the spring acts to pull the plunger and link 63 towards the left until shoulder 66 abuts against the stop 61. As the parts are restored by the spring, pawl 11 strikes against pin 89 and rocks counterclockwise on pivot 16 to be disengaged from the ratchet teeth 18.

Successive energization and deenergization of solenoid S is carried on by the opening and closing of contacts 83 operated by a member 84, connected to the solenoid plunger 62. In Fig. '7, it is seen that this member 84, which is pivoted at 85 on the frame 2|, is formed with an opening 86 encircling the stud 64 fastened to the solenoid plunger 62. The lower end of member 84 is formed with a projection 81 cooperating with a cam face 88 on the lower blade of the contacts 83. The arrangement is such that when the plunger 62 is drawn towards the right by energization of solenoid S, member 84 is rocked in a counterclockwise direction about pivot 85, and assumes the dotted line position 89 wherein the lower contact blade is cammed down by projection 81 so that contacts 83 are opened. Since these contacts are in series with solenoid S, this magnet is immediately deenergized and then spring 65 is effective to 'pull'the plunger 62 towards the left and rock member 84 in a clockwise direction so that projection 81 moves out of the path of cam face 88 whereupon contacts 83 close so that the solenoid S is again energized. The member 84 is provided with a weight 9i, and opening 86 is proportioned in alarger diameter than the stud 64 so that angle of operation member 84 may be wider than the movement of the operating stud 64. The inertia of the weight 9| tends to make the member 84 overthrown and swung further than the movement of stud 64, and in this way bring the opposite side of the opening against the stud so that full advantage is gained to partake of the movement of the stud. Successive energization of solenoid S is carried on by the automatic opening and closing of contacts 83 in series therewith, as long as the staple 41 is positioned under the sensing members.

The wiring diagram, Fig. 6, shows the electrical controls as they are wired to obtain successive operations of solenoid S as soon as a long feed operation is completed and as long as'a staple bridges the sensing members 38 and 39. A pair of main lines 399 and 3l9 are connected to the power source, and wired in series between them are a control relay ASR and the contacts 29l operated by the long feed cam lever as explained hereinbefore. After a long feed, the record sheets 46, Fig. 2a, are positioned near the initial item print line, the staple 41, Fig. 5, is under the sensing members, and the contacts 29!, Fig. 6, are closed to initiate operation of the solenoid for an auxiliary feed operation. The initiating circuit includes line 399, wire 59, relay ASR, wire 52, contacts 29I, wire 54 and line 3l9. Then, the energized relay ASR closes associated contacts 55 in series with a solenoid power relay PR which is only energized if a staple 41 is contacted by sensing members 38 and 39 also in series therewith. If no staple is sensed, the auxiliary feed devices are ineffective, for then plain record sheets without staple connections are being fed through the machine by the ordinary feeding devices. However, assuming that a staple 41 is present and the record sheets are fed short of the required distance, then a circuit is closed through line 399, wire 56, relay PR, wire 58, contacts 55, wire 59, sensing member 39, staple 41, sensing member 38, wire 69, wire 19 and line 3l9. This circuit is closed only momentarily, until contacts -29| again open, but in the meantime, relay PR has closed contacts 68 to establish a holding circuit. The holding circuit includes line 399, wire 56, relay PR, wire 82, contacts 68, wire 9|, wire 59, sensing member 39, staple 41, sensing.

member 38, and wires 69 and 19 to line 3I9.

Thus, the relay PR is made effective to close a I contact 92 in series with the solenoid coil S and hold that contact closed as long as the staple is under the sensing members. The solenoid operating circuit follows a path from line 399, through wire 99, contacts 92, wire I99, solenoid coil S, contacts 83, wire -19 and line 319. As explained hereinbefore, every time the solenoid is energized, the swinging member 84 is operated to open contacts 83. This serves to break the solenoid circuit and then spring 65 is effective to withdraw member 84 and allow the contacts 83 to close again to energize the solenoid. The successiye energization and deenergization of the solenoid, and the resulting record sheet feed by the ldevices including pawl 11, Fig. 2, continue as Icingv as the staple 41 is touched by the sensing members. However, as soon as the sheets 46 are. atthe correct position'wherein the staple. 41

assumes th-e; ,dottedposition. 49, Fig. 5,- out of contact from the sensing members, relayPR is ,deenergized and. contacts 92 :are openedto de- -e nergize thesolenoid coil S and stop the auxiliary feed. I

. The correct printing line is a position on the platen 5|, Fig. 2, directly opposite the pointed .end of the hammer 329, which'is activated after 94 threaded in said boss.

the type bar 53 has positioned a type 3|! in alignment therewith.

The gearing for conveying the movement of the ratchet and pawl TI, 18 (Fig. 2) to the platen 5| is shown in Fig. 1, and it is seen that knob I03 not only carries the ratchet teeth I8, but it also carries a pivot on which there is fulcrumed a pinion I04, tipped at an angle to cooperate with gears I05 and I06; the latter of which is pinned to shaft 69, the former being secured to a sleeve H0 attached to the platen 5I. When the knob I03 is turned manually, or through operation of the ratchet teeth I8, pinion I04 rotates as a planetary gear while meshing with the two gears I05 and I06 which are so proportioned that I05 will turn with respect to I06 as pinion I04 travels around the gears. The movement of platen 5| is slight compared to the movement of knob I03 so that a plurality of operations of the ratchet 18 must be employed to get an appreciable variation of platen position. However, the corrective feed is brought about rapidly because the oscillation of the solenoid plunger is induced by the quick operation of contacts 83. In Figs. 8, 9, and 10, there is shown another form of record sheet position sensing means for controlling the operation of the feeding solenoid. These devices operate mechanically to sense the position of a perforation 41', Fig. 10, in a record sheet 46'. -The perforation 41' takes the place of the staple 41 to control the same kind of auxiliary feed as that described hereinbefore. The edge of the perforation 4'! is used to carry along a mechanical pawl with connections to open contacts when the record sheet reaches the correct printing position just as the staple 41 opens the relay circuit when positioned beyond the sensing members.

In Fig. 8, it is seen that the shaft carries a forwardly extending square bar 93 which is formed with a cylindrical boss that is adjustably secured to the shaft by means of a thumb screw The forward end of bar 93 is supported by means of a U-shaped bracket 95, formed with feet 95, resting on the record sheet as it passes over the support 28. The upper part of the bracket sets in a notch cut into the upper part of the bar 93, and is adjustably secured thereto by means of a screw 97 which passes through a slot 98, out along the middle of the upper part of the bracket.

A sensing device frame III, Figs. 8 and 9, is suspended and pivoted at H2 on a holder H3 which is formed with a pair of extensions encircling the bar 93. The support H3 may be moved along bar 93 to carry frame III into any desired position, and there secured by tightening a screw H4 which clamps the opposite sides of the support H3 against the sides of bar 93. Carried on the frame-HI is a stud H5 on which there is loosely pivoted a bail H6, the side arm of which is extended downwardly, Fig. 10, and carries av stud III, on which a pointed feeler finger H8 is'pivoted. The end of this finger is designed to drop into the perforation 41, and be carried along by the edge of the perforation as the record sheet 45 is fed from right to left in Fig. 10. As the finger is drawn towards the left by the record sheet, stud H1 is carried along therewith and bail H6 is rocked in a clockwise direction about pivot I I5. Then the lower edge of the cross bar on bail H6 is lowered, and it presses on an insulation block H9 which is fixed on top of the lower blade of a pair of contacts I20. These contacts are wired in series with the feed control relay PR and perform the same function as the sensing members 38 and 39 (Fig. 6), in contact with the staple 41 of the sensing controls described hereinbefore. In this present form of sensing controls set forth in Figs. 8, 9 and 10, energization of the solenoid S is maintained until the edge of the feed control perforation 41 carries the finger H8 far enough to the left so that bail H6 is rocked clockwise sufficiently to open contacts I20. Although contacts I20 are normally closed, they are ineffective while contacts 29I and (Fig. 6) are opened. It is only at the end of a long feed, when contacts 29I close, that closed contacts I20 complete a circuit through relay PR and hold it until pulled open by the edge of perforation 41.

The finger H8 is urged around the pivot II I in the counterclockwise direction, Fig. 10, by means of a leaf spring I22, secured thereto and contacting under a pin I23 extended from the side of the frame II I. Bail H6 is also provided with a spring I24, which tends to rock it in a counterclockwise direction about fulcrum H5 so that it is normally brought into contact with i a stop lug I25 extending from frame HI. Spring I24 is coiled about stud H5 and caught under the cross bar of bail H6 at one end, and at the other end it rests on an extension I26 formed on the under side of frame III. The other side of the frame III is formed with a platform IOI for supporting the contact blades, and an arm- I 21 through which passes supporting screw H2.

The feeler finger H8 is provided with restoring means for disengaging it from the record sheet after the sheet has been shifted into the first print position by the required number of auxiliary spacing operations performed subsequent to the carriage feeding operation. When the contacts I20 are opened, finger H8 is still caught on the edge of perforation 41, and it is desired that the initial line spacing movements of sheet 46' serve to release the finger. For this purpose the frame III is formed with a triangular opening I28 through which there extends a pin I29 on the side of the feeler finger H8. This pin normally contacts the rear vertical wall of the opening I28, but when the finger is drawn towards the left, Fig. 10, by the cooperation between the record sheet 46 and the pointed end of the finger, the pin I29 is gradually raised by contact with the lower sloping edge of opening I28. After the finger has been lifted above the upper surface of the record sheet, spring I24 takes efiect to rock the bail H8 in a counterclockwise direction to return the parts to the normal position, wherein the finger H8 rests on top of the record sheet 46 in readiness to drop into the next perforation 41' which is not engaged until after the next long feeding operation.

Figs. 11 and 12 show an alternative form of staple sensing device, wherein a pair of brushes are mounted in an insulation block suspended in the path. of the record sheet by means of a square bar 08". which may be located adjustably in the Detection as the device shown in Fig. 9. A pair 'oif'bl'ui'shies a" and 99" (Fig. 11) are mountedin? insulation block I8I fastened between apcir ofmetallic side plates I 32 and I 33 pivoted "on orod at extending. through the block I3I. rod I24 also extends through a pair of downwardly extending side pieces I25 formed on a. holder I20 that passes over the upper part of the bar 93'. A thumbscrew I 31 is threaded into the side of support I36 so that when the support is brought to desired position, the screw may be tightened to fix the sensing brush holder on the bar.

The one side block I3I is cut away with a recess I38 into which there is fitted a coil spring I39 which encircles the rod I34 and presses between the shoulder of the recess and the under side of the support I36. Thus, the block I3I tends to rock in a counterclockwise direction, Fig. 12, about pivot I34 and to press the brushes 38 and 39 down into contact with the record sheet 46 so that when a staple 41 is located under them, an electrical connection is made between the two brushes. When substituted for members 38 and 39 in the wiring of Fig. 6, these brushes 38 and 39' serve to initiate energization of the solenoid S in the same fashion as when controlled by the sensing members, the control of which is described hereinbefore with reference to Figs. 1, 2 and 6.

While there has been shown and described and pointed out the fundamental novel features of the invention as applied to several modifications, it will be understood that various omissions and substitutions and changes in the form and details of the devices illustrated, and in their operation may be made by those skilled in the art without departing from the spirit of the invention. It is the intention, therefore, to be limited only as indicated by the scope of the following claims.

What is claimed is: I

In a machine for feeding a record sheet divided into forms with feed control indicia, ordinary sheet feeding means, auxiliary feeding means controlled by electrical impulses for correcting the position of each form after operation of said ordinary feeding means, electrical devices for operating said auxiliary means, means for sensing an indicium, an electric circuit controlled by said indicium acting in cooperation with said sensing means for making said devices effective, means for successively opening and closing said circuit after it is energized and thereby sending a number of impulses which control said devices for operating said auxiliary feeding means, the number of said impulses sent depending upon the position of said indicium away from the correct position after being fed by the ordinary means.

2. In a machine for feeding a continuous sheet divided into forms with a heading space and a feed control indicium on each form, means for feeding said sheet from form to form over the heading space, means for sensing the position of a control indicium after each form feed, means for setting said sensing means at various positions along the path of the indicia to predetermine the size of heading desired, and auxiliary feeding means under control of said sensing means for moving said sheet to the correct position under the heading.

3. In a machine for feeding a record sheet divided into forms with feed control indicia, sheet feeding devices, auxiliary feeding means controlled electrically for correcting'the position of a form after operation of said feeding devices, means for sensing an indicium, a relay held energized under control of said sensing means, means for initiating energization of said relay, and a solenoid called into operation by said relay to cause operation of said auxiliary feeding means to correct the position of a form.

4. In a machine for feeding a record sheet divided into forms with feed control indicia, sheet feeding devices, auxiliary feeding means controlled electrically for correcting the position of a form after operation of said feeding devices,

means as long as the sensed indicium is out of correct position, a solenoid controlled by said relay to operate said auxiliary feeding means, and means cooperating with said solenoid to cause successive operation thereof until the position of a form is corrected.

5. In a machine for feeding a record sheet divided into forms with feed control indicia, means for line spacing said sheet, long feeding means for shifting said sheet from form to form, means for sensing the position of an indicium after each long feeding operation, auxiliary feeding means for moving said sheet to a correct position, a relay, contacts in series with said relay and closed by said long feeding means at the end of each long feeding operation, a second relay, means under control of said first mentioned relay for energizing said second relay, a holding circuit for said second relay including said indicium sensing means, and electrical devices made effective by said second relay to cause operation of said auxiliary feeding means to move a form to the correct position.

6. In a paper feeding device for feeding a continuous sheet divided into forms with a heading space and a metallic insert on each form, means for line spacing said sheet, long feeding means for shifting said sheet from form to form over the heading space, a pair of sensing means which are bridged by a metallic insert after each long feeding operation, and auxiliary feeding means operated under control of said sensing means when bridged by said insert for moving said sheet to carry the insert out of bridging position and bring the sheet into the correct initial position.

7. In a machine for feeding duplicate record sheets divided into forms and held together with staples, sheet feeding devices, auxiliary feeding means controlled electrically by impulses for correcting the position of each form after operation of said devices, electrical devices for operating said auxiliary means,electrical connections closed by the presence of a staple therebetween after sheet feeding operation, means for energizing said devices successively with a series of impulses, means associated With said connections for initiating and sustaining operation of said devices and auxiliary means with impulses, said impulses continuing to be sent until the staple moves away and opens said electrical connections as the sheet arrives in the correct. position.

. 8. In a machine for feeding a continuous sheet divided into forms with a heading space and a 3 feed control staple on each form, means for feeding said sheet from form to form over the heading space, sensing devices which are bridgedby the presence of a control staple therebetween after each form feed, means for manually setting said sensing means at a variable position along the path of said staple according to the size of heading desired, and auxiliary feeding means under control of said sensing means for moving said sheet to the correct position under the heading after each form feeding operation.

9. In a machine for feeding carbon sheets and interspersed record sheets divided into forms and heldtogether with staples at regular intervals,

sheet feeding devices, auxiliary feeding means controlled electrically for correcting the position of a form after operation of said feeding devices, means for contacting each staple and establishing an electrical feed control circuit, a relay energized by said circuit, and electrical controls called into operation by said relay to cause operation of said auxiliary means to correct the position of a form.

10. In a machine for feeding a record sheet divided into forms with a feed control perforation in each form, sheet feeding devices, auxiliary feeding means controlled by electrical-impulses for correcting the position of each form after operation of said feeding devices, electrical devices for operating said auxiliary means, normally closed contacts in circuit with said devices, a finger for engaging a control perforation and thereby moved by the sheet during the correcting movement, contact operating instrumentalities controlled by said finger for opening said contacts, means associated with said devices for successively opening and closing said circuit and thereby initiating impulses sent through said devices for operating said auxiliary feeding means, said impulses being sent continuously after operation of the sheet feeding devices and until the sheet reaches the correct position wherein the finger is operated to such an extent by said sheet that said contacts are opened, and means for restoring said finger in readiness to engage the next control perforation.

11. In a machine for feeding'a continuous sheet divided into forms with a heading space and a feed control perforation in each form, printing devices, means for feeding said sheet from form to form over the heading space, a feeler for cooperating with a control perforation after each form feed, auxiliary feeding means, means for calling said auxiliary feeding means into operation after each form feed, means under control of said feeler for stopping operation of said auxiliary feeding means when the sheet is moved to position a form with the correct initial position under the heading, opposite the printing devices, and means for adjust ably setting said feeler according to the size of the heading space.

12. In a machine for feeding a record sheet divided into forms with feed control perforations, sheet feeding devices, auxiliary feeding means controlled electrically for correcting the position of a form after operation of said feeding devices, a relay, a circuit for initiating energization of said relay, means for closing said circuit under control of said feeding devices, a circuit for holding said relay energized, contacts in said holding circuit, a finger cooperating with a control perforation to be operated by the sheet when it is fed, contact operating instrumentalities connected to said finger and operated thereby for opening said contacts when the sheet is properly positioned, and electrical devices called into operation by said relay for operating said auxiliary feeding means until said contacts open as the sheet arrives in the correct position.

13. In a machine for feeding a record sheet with spaced metallic inserts, regular sheet feed- .ing devices, auxiliary correction feed devices, a

pair of separate sensing brushes, an insulation.

block in which said brushes are mounted, an adiustable frame on which said block is pivoted so that the brushes rest on said record in the path of said inserts, electrical devices including a feed control circuit which is closed when the sheet and an insert are positioned by said regular devices to bridge said brushes, and means under control of said electrical devices for operating said auxiliary feed devices to shift said sheet until the contacted insert thereon is moved out of contact with said brushes and into a corrected position.

14. In a machine for feeding a record sheet with feed control indicia, a main feeding means, means for sensing the position of an indicium, auxiliary feeding means for correcting the position of said sheet, a solenoid the energization of which is controlled by said sensing means, said solenoid operating said auxiliary feeding means, a pair of contacts in series with said solenoid, and means for opening and closing said contacts successively to cause repeated operation of said solenoid until the sheet is moved into correct position.

15. In a machine for feeding a record sheet-1 with a feed controlperforation, printing devices, devices for feeding said sheet near the proper position opposite said printing devices, auxiliary feeding means for correcting the position of said sheet, electrical connections which when closed cause operation of said auxiliary means, means for closing said connections under control of said feeding devices, means for opening said connections, a sensing member for operating said opening means, said member being moved by the edge of said control perforation to operate the opening means and stop the corrective feed of said auxiliary means when the sheet reaches the proper printing position.

16. In a machine for printing on a plurality of interspaced carbons and continuous record sheets divided into forms, each form having a heading and an area for receiving item printing impressions, said sheets being held together with staples on each form, a platen around which the sheets are fed, printing devices, line spacing devices, staple sensing members, long feeding devices for feeding said sheets after an item is printed on the last line of a form and skipping the heading of the next form and bringing the top of the item area opposite said printing means, said long feed placing a staple under said sensing members, a relay energized under control of said long feed devices at the end of the long feed operation, contacts controlled thereby, an auxiliary ratchet and pawl mechanism associated with said platen, a solenoid with a plunger connected to said pawl, a'second relay in series with said staple sensing members and said contacts closed by said first mentioned relay, a second set of contacts in series with said solenoid and operated by said second relay to make the solenoid effective as long as the sensing members contact with the staple, a third set of contacts also in series with said solenoid, a vibrating lever operated by the solenoid to open said third conforms with a metallic insert on each form, the

insert of a first form controlling the positioning of a secondv form, a platen around which the forms are fed, printing devices, record feeding means for operating the platen, auxiliary feeding means for operating the platen to correct the print starting position of each form, a paper table over which the record forms are moved, an insulation strip on said table in the path of the inserts, insert sensing members which are bridged by an insert of a form to close a circuit through the insert when all forms are out of correct starting position, means for adjustably securing 10 said members in the path of the inserts, and

electrical devices connected to said sensing members and energized by the circuit therethrough for controlling the operation of said auxiliary feed means to feed said second form to the correct starting position under control of the insert of said first form which moves away from said members to break the operating circuit as the second form arrives in the correct starting posi-

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