US2702622A - Paper feeding means in accounting machines - Google Patents

Description

C. A. PARKER ET AL PAPER FEEDING MEANS IN ACCOUNTING MACHINES Original Filed June 14. 1949 Feb. 22, 1955 7 Sheets-Sheet l cn ARLQA Feb. 22, 1955 c. A. PARKER L 2,702,622

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PAPER FEEDING MEANS IN ACCOUNTING MACHINES Original Filed June 14. 1949 7 Sheets-Sheet 7 Dan/ m 0W ATTORNEY.

United States Patent PAPER FEEDING MEAN S lN ACCOUNTING MACHINES Charles A. Parker, Chicago, 111., and Clifton K. Rainey, Knoxville, Tenn., assignors, by mesne assignments, to Burroughs Corporation, a corporation of Michigan Original application June 14, 1949, Serial No. 99,081. Divided and this application August 17, 1951, Serial No. 242,288

12 laims. (Cl. l97128) This invention relates to accounting machines. It provides a single machine operative under selective control to function as either a typing machine, a posting machine, or a calculating machine, in which all typing and all calculator indexing operations are governed from a common, single keyboard. Incidental to the performance of its various functions, the machine embodies the usual manual and automatic controls of known typewriting, posting, and calculating machines; and additionally includes novel manual as well as automatic controls for conditioning the machine, at the will of an operator, either to carry out or to exclude, during the performance of one of its functions, the performance of all or part of its other functions.

This application is a division of our copending application Serial No. 99,081 filed June 14, 1949.

An object of this invention is to provide in an accounting machine having a paper carriage thereon and a front feed bail, a locking device for retaining said bail in closed position, controlled by an operating member within the machine during a portion of its cycle of operation.

Another object is to provide an accounting machine having a paper carriage with a front feed device with a means for closing said device upon movement of the operating member within the machine.

A further object is to provide in an accounting machine having a carriage thereon, a single bail movable on the carriage by the operating member within the machine to close the front feed device, to lock the front feed device in its closed position during a portion of a cycle of operation, and to operate a line space mechanism for paper feeding during a cycle of operation.

These and other objects of this invention will hereinafter appear, and for purposes of illustration, but not of limitation, an embodiment is shown in the accompanying drawings.

In the accompanying drawings:

Figure 1 is a top plan view of the machine;

Figure 2 is a side elevation with the front part of the main frame removed for illustration of detail;

Figure 3 is a vertical section substantially through the machine and the control plate;

Figure 4 is a fragmentary section substantially on the line 44 of Figure 1;

Figure 5 is an elevation of detail shown in Figure 4;

Figures 6, 7 and 8 are, respectively, detail views of the front feed bail lock mechanism;

Figure 9 is a section on line 99 of Figure 4, and

Figure 10 is a fragmentary rear elevation of the structure illustrated in Figure 9.

As indicated generally in Figures 1 and 2, the apparatus essentially comprises a main frame 40 of the general form and structure of a typewriter frame, being provided with a keyboard and having a carriage assembly C mounted on the frame for reciprocation in the usual manner of typewriter and posting machine carriage operation.

The machine is equipped with a bank of front strike type bars 41 operated from keys 42 for front strike visible printing at a point determined by a type guide 43 which forms part of a hammer member 44 that operates in a manner later described to effect a common striking movement against a properly positioned series of adding type bars when they are disposed for printing. The keyboard has the usual spacer 45 and, at the right hand side of the frame, a motor bar 46. On the left hand side of the frame is disposed a tabulator bar 47. The front plate of the frame mounts keys for controlling the functions of 2,702,622 Patented Feb. 22, 1955 calculating mechanism generally indicated at A. These keys at the right hand side of the frame comprise an adding key 48, a total key 49, a subtotal key 50 and, at the left hand side of the frame, a subtract key 51. The type guide 43 establishes the printing point and establishes also the decimal point for item printing in the calculating machine operation. The carriage is provided at its left hand end with a forwardly directed return handle 52 which is substantially of conventional design and which may be rotated to effect line spacing in the usual manner of such devices.

The carriage assembly incorporates a novel front feed arrangement including a paper positioning bail, and associated mechanism that is operative with a three-fold function: (1) to lock the front feed against opening during an operating cycle of the machine, (2) to operate the line spacing mechanism, provided the appropriate control is in position, and (3) to close the front feed at the start of an operating cycle.

An essential part of the machine is embodied in a driven reciprocable element which operates through a defined cycle between limit positions in one of which it is at rest, under the influence of motor means to accomplish many functions and to effect the positioning and actuation of the various members and instrumentalities by which the different operations of the associated mechanisms are carried out. This member, herein referred to as an operating frame generally designated at 0, provides for the actuation of the various instrumentalities after the machine has been conditioned for their proper sequential operation. It is an important aspect of this invention that, for the greater part, the operation of the various levers, detents, and actuators is under the influence of springs, whereby the various elements are biased or urged into operating movement that is normally restrained by the withholding action of other elements movable under the influence of the operating frame to permit operation of the various levers, detents, and actuators under the influence of their springs. This relieves the motor of a very considerable load, and not only assures fast, smooth operation of the machine but also eliminates to a major extent any possibility of breakage in the event of jamming. Should something occur to jam any parts of the mechanism, the affected parts will not be moved under a force greater than that exerted by their associated springs.

Line spacing mechanism With reference to Figure 3, it will be seen that the control plate 59 mounts the line spacer detent 63 for vertical oscillation through a receiving slot provided in the plate. This detent 63 comprises a transversely extended lever that is fulcrumed at one end to pivot on the shaft 297 with the body of the lever extending transversely in the assembly longitudinally beneath the under surface of the control plate. Spring means 363 is utilized to position the detent lever 63 normally elevated in its receiving control plate slot with its pawl tip 63' in its extreme elevated position. The spring 363 is anchored at one end to a pin extending laterally from one end of the detent lever 63 and is connected at its other end to a point of attachment on a fixed element on the underside of the control plate 59. As shown in Figure 4, the bottom edge of the detent lever 63 has a vertically depending portion 364 that is formed with a rearwardly and horizontally directed lip 365. The lip 365, as best shown in Figure 9, has a stepped rear edge providing a shoulder 366 and a curved portion 367 extending from the shoulder to the adjacent edge of the lip. Normally, with the detent lever 63 positioned with its pawl tip in elevated position, the lip 365 is so disposed that its shoulder 366 is spaced forwardly of and in the path of movement of an upstanding stud 368 carried by a horizontal rocker 369 loosely pivoted at one end on a vertical shaft 370 which is disposed within a vertical tubular housing 371 secured at its upper end to the control plate 59. The shaft 370 extends at both ends beyond the adjacent ends of its fixed tubular mounting housing 371. The lower end of this shaft has fixed thereto for rotation therewith a collar 372 formed with an integral horizontal radial arm 373 that lies immediately beneath the rocker 369, extending in the same direction as the rocker. The forward side edge portion of the arm 373 extends forwardly with respect to the adjacent forward side edge of the rocker 369 which immediately overlies it. In the clearance thus provided the arm 373 carries an attached upstanding stud 374 which forms a point of anchorage at one end of a retracting spring 375 that is connected at its other end to a point of attachment 376 on the upper face of the rocker 369. The bias of spring 375 acts to urge the rocker and the underlying arm together in vertical registry to the limit permitted by engagement of the stud 374 against the adjacent forward side edge of the rocker. The rocker 369 has a straight edge portion 377 that is normally biased into contact with an upright 378 fixed to the left side plate L of the operating frame. The upper end of the shaft 370 extends above the plane of the top face of the control plate 59, as shown in Figures 4 and 5, and has fixed thereon for rotation therewith a radially extending arm 379 which carries an upstanding stud 380.

As shown in Figure 5, the end plates 54 of the carriage journal transversely between them adjacent their upper rear ends a transversely extending rod 381 which, at each end inside the adjacent plate 54, has fixed thereto for rotation therewith a swinging frame. This frame includes the rod 381 and depending side links 382 that are rigidly connected at their lower ends by a transversely disposed bottom rod 383 which bears against the upstanding stud 380 of the arm 379. The frame link 382 at the left end of the carriage has pivotal connection 384 intermediate its ends with the rear end of a throw link 385 which extends forwardly in parallel relation to the carriage end plate and carries at its forward upturned end a pawl 386. This pawl is adapted to engage the teeth of a ratchet wheel 387 which forms a part of the conventional line spacer mechanism common to typing machines. The ratchet wheel is secured to the adjacent end of the carriage platen. A retracting spring 388, connected between a point of attachment on the shank of the throw link 385 and a point of anchorage 389 on the adjacent end plate 54 of the carriage, normally biases the throw link forwardly to exert a pull on its connection 384 with the frame side link 382. This forward pull urges the bottom rod 383 of the frame forcibly against the upstanding stud 380 and rocks the shaft 370 in a direction counterclockwise, with respect to Figure 9, so that the arm 373 which underlies the rocker 369 is normally held against, or in the path of movement of, the upright 378 on the operating frame. By bias of the spring 375 the loosely mounted rocker 369 also is urged against the operating framecarried upright 378 or into the path of movement of the upright When the operating frame moves rearwardly.

With reference to Figures 5 and 9, when the operating frame moves forwardly in the first half of its cycle the upright 378 moves sufliciently far forward to clear the adjacent end of the rocker 369 and permit a counterclockwise movement of the rocker, relative to Figure 9, to the point at which it is arrested by engagement of its stud 368 against the shoulder 366 of the line spacer detent lever portion 365. Unless the pawl of the detent lever 63 has been depressed, the lip 365 holds the rocker 369 against further rocking movement. Should the line spacer detent pawl be depressed through engagement by an appropriate one of the lugs 57 on the phase changing member P, the downward movement of the lever at its pawl end acts to shift the lip 365 laterally sufliciently far to move the shoulder 366 from the path of travel of the rocker-carried stud 368. This stud then is free to move without hindrance from the lever-carried lip. With the freedom of movement thus provided the rocker 369 swings counterclockwise behind the forwardly moving operating frame-carried upright 378. In this movement it carries with it the underlying arm 373 that is attached to the shaft 370, so that the shaft is rocked by the pressure of the bottom rod 383 of the swinging frame against the stud 380 under the pull of spring 388. The movement thus provided carries the throw link 385 forwardly to a point at which the tip of its pawl 386 is positioned to engage a tooth of the ratchet wheel 387.

When the operating frame moves rearwardly in the second half of its cycle its upright 378 cams against the rocker 369 and rocks the same clockwise, with respect to Figure 9, moving it back to its initial position. The bias of spring 375 holds the shaft arm 373 tightly associated with the rocker so that it moves with the rocker to rock the shaft 370 and, through the arm 379 and stud 380 at its upper end, to move the bottom rod 383 rearwardly against tension of the spring 388. This movement carries the rod 383 to its normal position, as shown in Figure 4. in the course of this movement the throw link 385 is pulled rearwardly to act through its pawl 386 and its engagement with the line spacer ratchet wheel 387 to actuate the mechanism for one line space, until the tip of the pawl 386 is lifted out of engagement with the ratchet wheel teeth as it rides up on the riser portion 390 of a fixed cam secured to an element of the carriage. The mechanism will thus have been manipulated to effect one line spacing operation.

The front feed bail lock A part of the mechanical movement resulting from the operation just described is utilized to effect locking of the front feed bail against opening. This bail, indicated generally at 391, is constructed in accordance with the disclosure in the copending application of Clifton King Rainey, Serial No. 580,117, filed February 28, 1945, now Patent No. 2,598,939. Briefly described, it consists of vertical end pieces 392 connected at their upper ends by a transverse handle rod 393 and pivoted at their lower ends on the platen shaft 394. The bail carries a transverse bracing shaft 395 disposed transversely between its endpieces above the platen and which provides a bearing for the plurality of feed rolls 396, best shown in Figure 1. After the bail has been opened to admit insertion of the paper and has been returned to paper-holding position, it is highly desirable that it be held against any possibility of being moved to open position during a cycle of the operating frame.

At the right hand end of the carriage, see Figures 6-8, the frame link 382 has pivotally mounted on its bottom rod 383 a right angled actuator 397. This actuator has a forwardly and downwardly inclined link arm 398 and a substantially vertically disposed short arm 399. The short arm is pivoted at its free end on the bottom rod 383 of the swinging frame comprised of the side links 382 and the rods 381 and 383. Retracting spring means 400, connected between an intermediate portion of the long arm 398 of the actuator and a point of anchorage on the adjacent link 382 intermediate the ends of the link, provides a bias normally urging the actuator 397 in a direction to rock on its pivot whereby to elevate its forward arm 398. Upward movement of the arm 398 is limited by a fixed stop 401 that extends laterally from the adjacent carriage end plate 54 and overrides the edge 402 of a longitudinally disposed recess provided in the shank of the actuator and opening to its top edge. Forwardly, beyond the front end of the recess 402, the actuator arm carries a fixed lateral pin 403 that underlies the bottom edge of a substantially V-shaped latch member 404 having divergent upper and lower arms 405 and 406. The latch member is pivotally mounted at its apex on the adjacent carriage end plate on a fulcrum stud 407 carried by the end plate. A retracting spring 408 connected between a stud 409 on the latch and a point of attachment on the adjacent carriage end plate normally biases the latch to swing vertically downward so that its bottom edge, which is the bottom of the lower short arm 406, normally bears upon the underlying pin 403 of the actuator 397. In the normal position of the parts, as shown in Figure 7, the latch 405 is held upwardly by engagement of the actuator pin 403 against the bottom edge of the short arm of the latch at a point spaced inwardly of its front end. In this position of the parts the operating frame is in its normal position of rest. With the latch thus held in raised position the front feed bail 392 may be rocked on its platen shaft fulcrum to open or closed position with perfect freedom of movement.

At the start of a cycle of the operating frame, the limited movement permitted by the following action of the rocker 369, see Figure 9, moving behind the forwardly advancing upright 378 of the operating frame, carries the rocker stud 368 into engagement with the shoulder 366 of the line spacer detent lever lip 365. If this lip is not moved out of the path of travel of the stud 368, as it may be through operation of the mechanism previously described, the stud is arrested at its point of engagement with the lip shoulder and the swinging frame, having the side links 382, will only be moved forwardly to the limited extent permitted by its engagement against the upstanding stud 380 of the rock shaft 370. This limited movement is sulficient to advance the fulcrum point of the lower end of the actuator 397 and correspondingly to carry forward the arm 398 of the actuator until its pin 403 clears the shoulder 410 formed at the inner end of the reduced tip 411 of the latch arm 406. When this occurs the latch rocks downwardly on its fulcrum 407 and its free arm 405 then moves into holding engagement with an element of the front feed bail. This element comprises a laterally directed stud 412 mounted on a bail end piece. When the latch drops down the stud 412 is received in a keeper slot 413 opening from the bottom edge of the upper arm of the latch at its forward end, as best shown in Figure 6. This engagement of keeper slot and bail stud locks the front feed bail against any possibility of rocking on its fulcrum to open after initiation of movement of the operating frame and until the operating frame returns to its normal position at the end of its cycle. As the operating frame reaches the rearward limit of its second half cycle its upstanding stud 378 cams the rocker 369 rearwardly, which operates, through the movements previously described, to rock the shaft 370 so that its stud 380 bears against the bottom rod 383 of the swinging frame and carries rearwardly the actuator 397; whereby the pin 403 on its forward arm cams against the inclined shoulder 410 of the latch and rides beneath the bottom edge of the latch to rock it on its fulcrum so that its upper arm lifts sufiiciently to clear the keeper slot 413 from its engagement with the bail stud 412, whereupon the ball is again in condition for opening and closing.

Means is provided for automatically closing the front feed bail in the event that it be open or not fully closed when the motor bar is tripped to start a cycle of the operating frame. The right hand end piece 392 of the front feed bail is formed at its lower end with a nose 414 which carries a lateral stud 415 that is adapted to be engaged with a laterally directed car 416 which projects from the front end of the forward arm 398 of the actuator 397. When the front feed bail is in fully opened position, as shown in Figure 8, its nose stud 415 abuts the car 416 on the actuator and carries the actuator rearwardly to move the bottom rod 383 of the swinging frame rearwardly. This bottom bar is constantly engaged along its rear side against an upstanding finger piece 417 that is integral with a horizontal plate 418 which, as shown in Figure 10, is formed as a lever pivoted at one end on a fulcrum mount 419 to oscillate in a horizontal plane on the upper face of the control plate 59. The fulcrum 419 is carried by the control plate and functions also as a fulcrum for a vertically disposed lever plate 420 which oscillates beneath the control plate in a horizontal plane. The upper lever plate 418 has a vertically depending flange 421 on its rear edge which mounts an adjustable stop member 422 provided with a forwardly extending shank that serves at its forward end as a stop engageable by the plate lever 420 to limit or define the spacing between the lever 420 and the flange 421 of the upper plate lever. A retracting spring 423 connected between the flange 421 and the body of the plate lever 420 normally biases the two plate levers into converging relation that is limited only by the adjustment of the stop member 422. As shown in Figure 9, the lower free end portion of the vertical plate lever 420 is formed with a forwardly directed cam tip 424 obtusely angled relative to the body of the lever 420 to angle inwardly slightly across and above the left hand side plate L of the operating frame. When the front feed bail is moved to open position, the resulting rearward movement of the rod 383 of the swinging frame, as previously described, carries the upstanding finger 417 rearwardly to the positions, shown in Figures 8 and 10. The finger 417 carries the horizontal plate lever 418 rearwardly to rock on its fulcrum 419, and through the pull of the spring 423 it correspondingly pulls rearwardly on the plate lever 420 whereby to dispose its cam tip 424 in the position shown in Figure 9, with the body of the lever contacting the front vertical edge of the operating frame-carried upright 378.

When the operating frame moves forward at the start of its cycle its upright 378 cams the lever tip 424 forwardly and laterally outward, thereby to rock the lever 420 on its fulcrum and correspondingly pull forward the depending flange 421 of the upper plate lever 418. This 'movement correspondingly advances the finger 417 forwardly and moves the swinging frame rod 383 forwardly so that the actuator 397 is carried forward. In this forward movement of the actuator its ear 416 abutting the nose stud 415 of the front feed bail rocks the bail on its platen shaft fulcrum so that it is forced into closed position. Thus, it will be evident that even though the bail be fully open or incompletely closed when the operating frame starts forward, the mechanism just described automatically insures that the front feed bail be moved to closing position sufficiently far that the continuance of closing action is taken over by the conventional counterbalance and spring assembly of paper-holding bail mech anism, not here shown.

When the front feed bail is closed the finger 417 of the plate lever 418 is at its forward position as shown in Figure 7. In this position the plate lever 420 is also disposed so that its cam tip 424 is at one side of the path of movement of the operating frame-carried upright 378.

It will be understood that numerous changes may be made in the details of construction, arrangement, and operation without departing from the spirit of the invention, especially as defined in the following claims.

We claim:

1. In an accounting machine having a main frame, a carriage and a platen on said carriage, a front feed paper holder comprising a bail pivoted on the platen to oscillate between open and closed positions, a stud on said bail, a latching lever pivoted on the carriage and having a recess in a portion thereof in position to receive said stud when the bail is in closed position, means constantly urging the latching lever to pivot in the direction for receiving said stud in the recess to latch said bail, a control lever reciprocable during a cycle of operation of the accounting machine, an extension on said latching lever having a cam surface operatively engaging said control lever whereby the latching lever is normally cammed out of latching position and is released for movement towards latching position during an initial portion of the cycle of operation.

2. In an accounting machine having a main frame, a carriage, a platen on said carriage, and a front feed paper holder pivoted to oscillate between open and closed positions, a bail mounted in the frame to oscillate during a cycle of operation, a control lever pivoted at one end upon the bail for imparting reciprocable movement to the control lever during a cycle of operation, a ratchet wheel rotatable with the platen, a pawl on the end of the control lever in position to engage the ratchet wheel, means constantly urging the control lever in the direction to bring the pawl into engagement with the teeth of the ratchet wheel whereby the ratchet wheel is turned stepwise upon reciprocal movement of the control lever to impart line spacing, a second control lever pivotally mounted at one end on the bail for simultaneous reciprocal movement during a cycle of operation of the machine, an abutment extending from the front feed paper holder into the path of the second control lever when the holder is in open position whereby the abutment is displaced by the second control lever during an initial portion of the cycle of operation to rock the holder to closed position.

3. In an accounting machine having a main frame, a carriage, a platen on said carriage, and a front feed paper holder pivoted on the platen to oscillate between open and closed positions, a bail mounted in the frame to oscillate forward and back during a cycle of operation of the machine, a control lever pivotally mounted at one end on the bail for reciprocable movement during oscillation thereof, a ratchet wheel rotatable with the platen, a pawl on the end of the control lever in position operatively to engage the teeth of the ratchet wheel, spring means constantly urging the control lever to bring the pawl into engagement with the teeth of the ratchet wheel whereby the wheel is turned stepwise upon re ciprocal movement of the control lever to effect line spacing, a second control lever pivotally mounted on the bail for simultaneous reciprocal movement during a cycle of operation of the machine, a stud on the holder, a latching lever pivotally mounted on the carriage having a recess for receiving the stud in latching position when said latching lever is rocked to latching position while the holder is in closed position, means constantly urging the latching lever to rock towards latching position and into operative engagement with the second control lever,

cam surfaces between the second control lever and the ing lever is released for rocking movement to latching position during an initial portion of the cycle of operation of the machine and is cammed out of latching position at the end portion of the cycle.

4. In an accounting machine having a main frame, a carriage, a platen on said carriage, and a front feed paper holder pivoted on the platen to oscillate between open and closed positions, a bail mounted in the frame to oscillate forward and back during a cycle of operation of the machine, a first control lever pivoted at one end upon the bail for reciprocable movement during oscillation of the bail, a ratchet wheel rotatable with the platen, a pawl on the end of the control lever in position operatively to engage the teeth of the ratchet wheel, means constantly urging the first control lever in the direction to bring the pawl into operative engagement with the teeth of the ratchet wheel whereby the ratchet wheel is caused to operate stepwise responsive to reciprocal movement of the control lever during a cycle of operation, a second control lever pivotally mounted on the bail for simultaneous reciprocal movement during a cycle of operation of the machine, an abutment extending from the front feed paper holder into the path of the second control lever when in open position whereby the abutment is displaced by the second control lever during an initial portion of the cycle of operation to rock the holder to closed position, a stud on the holder, a latching lever pivotally mounted on the carriage for rocking movement between latching and unlatching position and having a recess for receiving said stud when rocked to latching position while the holder is in closed position, means constantly urging the latching lever to rock toward latching position and into operative engagement with the second control lever whereby the latching lever is guided for rocking movement to latching position during an initial portion of the cycle of operations following return of the holder to closed position and is cammed out of latching position during the end portion of the cycle of operation.

5. In an accounting machine, a main frame, a platen on said main frame, a front feed paper holder including a bail mounted for free pivotal rocking movement between open and closed positions, a latching mechanism shiftable between an unlatching position and a position for latching engagement with the bail when the latter is in closed position, means biasing the latching means toward latching position, a link shiftable between normal and operated positions during a cycle of operation of the machine, means on said bail lying in the path of said link for rocking said bail to closed position upon engagement during movement of said link to operated position, and an operative connection between said link and said latching mechanism for releasing same for movement to latching position during movement of said link to operated position and for actuating same to unlatching position to release the bail during return movement to normal position.

6. In an accounting machine, a main frame, a platen on said main frame, a front feed paper holder including a bail pivotally mounted for free rocking movement between open and closed positions, a latching mechanism shiftable between unlatching position and a position for latching the bail when the latter is in closed position, means biasing the latching mechanism toward latching position, a link shiftable between normal and operated positions during a cycle of operation of the machine, means on said bail lying in the path of said link for rocking said bail to closed position upon engagement during movement of said link to operated position, and an operative connection between said link and said latching mechanism for releasing same for movement to latching position during movement of said link to operated position and for camming said latching mechanism out of latching position during return of said link toward normal position.

7. in an accounting machine, a main frame, a platen on said main frame, a front feed paper holder including a bail pivotally mounted for free rocking movement between open and closed positions, a latching arm shiftable between unlatching position and a position for latching engagement with the bail when the latter is in closed position, means biasing the latching arm toward latching position, a link shiftable between normal and operated positions during a cycle of operation of the machine, means on said bail lying in the path of said link for rocking said bail to closed position upon engagement during movement of said link to operated position, and an operative connection between said link and said latching arm for releasing same for movement to latching position responsive to movement of said link to operated position subsequent to engagement with said bail for rocking same to closed position and to release the bail during return movement to normal position.

8. In an accounting machine having a main frame, a carriage, a platen on said carriage, a front feed paper holder comprising a bail freely shiftable between open and closed position, a line space mechanism on the carriage for step by step movement of the platen, a swinging frame movable on said carriage to operate said line space mechanism, a cyclically operated member in the main frame, mechanism between the cyclically operated member and the swinging frame to impart movement to the swinging frame during a cycle of operation, and a means operable by said swinging frame upon movement by the cyclically operated member toward operation of the line space mechanism to move front feed paper hail from open to closed position during a portion of the movement of the swinging frame.

9. In an accounting machine, a main frame, a platen on said main frame, a front feed paper holder including a bail pivoted to rock between open and closed positions, line space mechanism on said frame for stepwise rotation of said platen, latching mechanism biased for movement toward latching position to hold said bail when in closed position, link means shiftable from normal position to operated position and back during a cycle of operation of the machine, means associated with said link means for operatively engaging said bail latching means and line space mechanism selectively to effect operation of same during movement in a cycle of operation in sequence to rock the bail to closed position, release the latching means to fix the bail in closed position, effect line spacing and return of said latching means to release the bail upon return movement of the link during the cycle of operation.

10. In an accounting machine, a main frame, a platen on said main frame, a front feed paper holder including a bail pivotally mounted for free rocking movement between open and closed positions, line space mechanism on said frame for stepwise rotation of said platen, latching mechanism shiftable between unlatching position and a position for latching the bail when the latter is in closed position, means biasing the latching mechanism towards latching position, links shiftable linearly between normal and operated position during a cycle of operation of the machine, means on the bail positioned in the path of a link for engagement thereby to rock the bail to closed position during movement of the link to operated position, an operative connection between a link andthe latching mechanism for releasing same for movement to latching position during movement of the link to operated position and for displacing the latching means to unlatching position during return of the link to normal position, and an operative connection between a link and the line spacing mechanism for effecting stepwise rotation of the platen during return of the link to normal position.

11. An accounting machine as claimed in claim 10 in which means are provided on the main frame to prevent engagement between the link and line spacing mechanism until the link has been displaced substantially to the full extent of its movement towards operated position during a cycle of operation.

12. An accounting machine as claimed in claim 10 in which means are provided for stopping movement of said links beyond latching release position but before operative engagement with said line spacing mechanism.

References Cited in the file of this patent UNITED STATES PATENTS 1,769,718 Smith July 1, 1930 1,825,148 Hart Sept. 29, 1931 1,917,784 Walsoe July 11, 1933 1,945,026 Crosman Ian. 30, 1934 2,192,324 Muller Mar. 5, 1940 2,366,468 Anderson Jan. 2, 1945 2,492,887 Rainey Dec. 27, 1949 2,536,524 Anderson Jan. 2, 1951

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