US2167760A - Accounting machine - Google Patents

Description

Aug 1, 19395 c L, L E 2,167,760

ACCOUNTING MACHINE Original Filed Oct. 14, 1935 7 sh et -Sheet 1 Inventor O g; Charles L. Lee, Deceased \Q I m- By Leefe Jane Lee Executrix L\ By Q 4 m *0 OvwZ/M 0 1 Her Attorney Aug. 1, 1939. c. L. LEE

ACCOUNTING MACHINE Original Filed Oct. 14, 1935 7 Sheets-Sheet 2 Inventor Charles L. Lee, Decehsed By Leefe Jane Lee Execulrix Her Attomey Aug. 1, 1939. c. L. LEE 2,367,760

ACCOUNTING MACHINE Original Filed Oct. 14, 1935 '7 Sheets-Sheet 3 inventor Charles L. Lee, Deceased By Leefe Jane Lee Execuh-ix QM M Her Attorney Aug. 1, 1939. L, LEE 2,167,760 i ACCOUNTING MACHINE FIG. 8

Inventor Charles L. Lee, Deceased By Leefe Jane Lee Executrix t I By 7; M M

Her Attorney C L. LEE

Aug. 1, 1939.

ACCOUNTING MACHINE Filed Oct. 14, 1935 7 Sheets-Sheet 5 Inventor Charles L. Lee, Deceased By Leefe Jane Lee Executrix Her Attorney Aug. 1, 1939. c. L. LEE

ACCOUNTING MACHINE '7 Sheets-Sheet 6 Original Filed Oct. 14, 1935 Q 5 w @mm m g B m 0U o. O 0 NE a 5 S Q 6% m m o m I 0 1 0 S N wmw 8w 1 o w o 0 c O H O Q 5 a v Invenfioz- Charies L. Lee, Deceased By Leefe Jane Lee Executrix By @Mm Her Attorney Aug. 1, 1939. C LEE ACCOUNTING MACHINE Original Filed Oct. 14, 1935 7 Sheets-Sheet 7 Inventor Charles L. Lee, Deceased By Leefe Jane Lee Execuh-ix Her Atmmey a hand lever which operated an oscillating drive Patented Aug. 1,1939

UNITED STATES PATENT OFFICE ACCOUNTING MACHINE Original application October 14, 1935,'Serial No. 44,838. Divided and this application July 22,

1936, Serial No. 91,877

6 Claims.

This invention relates to bookkeeping or accounting machines and the like, but more particularly to improvements in the operating and controlling mechanisms of machines of the type illustrated and described in Letters Patent of the United States Nos. 1,197,276 and 1,197,278, issued September 5, 1916, to Halcolm Ellis and United States Patent No. 1,819,084, issued August 18, 1913, to Emil John Ens. This case is a division of applicant's pending application Serial No, 44,838 filed October 14, 1935.

Practically all the electrically operated adding and listing machines, commonly referred to as bookkeeping or accounting machines, of today have ev01ved from a hand-operated machine. Most of the earlier machines were equipped with shaft which in turn actuated the mechanism of the machine. Later, these machines were equipped with electric motors which oscillated the drive shaft in substantially the same manner as the hand lever. In this transition the electric motors were merely added to the hand-operated machines and in most cases no attempt was -made to modernize or improve the operating and actuating mechanismsof the machine.

The various advantages of the revolving drive shaft over the oscillating drive shaft will be refor their various functions.

A still further object of this invention is the provision of novel means to control the machine releasing means in certain operations.

Another object is the provision of novel mechanism for controlling the machine releasing means during overdraft operations.

Another object of this invention is the novel mechanism for transposing complementary amounts to print the true negative total in a 1 machine of this type having a rotary drive shaft. With these and incidental objects in view, the invention includes certain novel features of construction and combination of parts, the essential elements of which are set forth in appended claims and a preferred form or embodiment of which is hereinafter described with reference to mechanism connected thereto.

Fig. 3 is a right side elevation of the machine releasing mechanism.

Fig. 4 is a fragmentary view of the machine clutch.

Fig. 5 is a detail view of the overdraft key and a part of its associated mechanism.

Fig. 6 is a fragmentary view of the right hand end of the rotary drive shaft.

Fig. 7 is a fragmentary view of the overdraft control cam cluster.

Fig. 8 is'a right side elevation of the overdraft key locking mechanism.

Fig. 9 is a detail view of a portionof the overdraft key locking mechanism.

- Fig. 10 is a detail view of a portion of the r overdraft control mechanism.

Fig. 11 is a right side view of the means for controlling the printing mechanism during overdraft operation.

Fig. 12 is a sectional view of the machine taken just to the right of one of the rows of amount keys.

Fig. 13 is a detail view of the alining mechanism for the actuator racks.

Fig. 14 is anend view of the overdraft storage differential.

.Fig. 15 is a detail view of the engaging mechanism for the overdraft differential.

Fig. 16 is a left side elevation of the machine showing in particular the totalizer controlling and engaging mechanisms.

Fig. 17 is a detail of a portion of the key releasing mechanism.

Fig. 18 isa perspective view showing the totaliz er controlling mechanism and the machine releasing mechanism.

well known Ellis .type and, is equipped with a laterally shiftable traveling carriage supporting a. platen roll adapted to present record material to the type carriers. Depending upon the use to which the machine is to be put, it may or may not be equipped with a typewriter keyboard and type for the entering of various data upon the record material. The machine of the present invention is equipped with a rotary drive shaft, which replaces the conventional oscillating drive shaft used heretofore in machines of this type. A constantly, running motor is op'eratively connected to the drive shaft by means of a clutch mechanism which is controlled by the usual releasing mechanism. In all operations except overdraft operations, depressing the regular reactuated by a plurality of denominational reciprocating racks which are in turn positioned in adding and subtracting operations under control of a plurality of amount keys arranged in denominational rows on the keyboard. In totaltaking operations, thetotalizerwheels position the racks to record the amount on said totalizer wheels. There is a type carrier for each denomination and they are positioned by the actuator racks commensurate with the value of the depressed amount keys orthe amount on the totalizer wheels. l

The adding and subtracting functions of the present machine are controlled by the traveling carriage in tabulated positions thereof and the other functions, including non-add, sub-total, total, repeat, and also subtract, are governed'by a row of control keys located on the left side of the keyboard. Other features of the instant machine will be disclosed in the detailed description following.

DETAILED DESCRIPTION: Framework and operating mechanism a right frame 40 (Figs. 1, 2, and 16) and a left frame 4|, secured to a machine. base 42, which also supports a suitable cabinet or case (not shown) which encloses the mechanism of the machine. Mounted on the machine case is a laterally shiftable traveling carriage (not shown) similar to that used on typewriters, supporting a platen roll 43 (Fig. 12) which carries record material in proper relation to the type carriers, O of which, an amount segment 44,- is here shown. Secured to the base 42 is an electric motor 45 (Figs. 1, 3, and 4) of the constantly running type, geared to a clutch driving member 46 adapted to be frictionally connected to a clutch driven member.41, both of said clutch members being rotafably supported by a stud 48 secured in the motor Secured to a hub of the clutch driven'"' frame. member 41 is a gear 49 connected by an intermediate gear 50 loose on a stud 5| in the motor frame to a gear 52 secured on'a main drive shaft 53. opposite ends of which are journaled in th frames 40 and 4|.

One end of a clutch band 54 (Fig. 3) is secured to the clutch driven member 41, while the other end thereof is connected to a bell crank- 55 loo e on a stud 58in the member 41 and adjustably connected to an arm 51 also loose on the stud 56.

The upper end of the arm 51 cooperates with a bentover ear 58 of a lever 59 loose on a stud in the motor frame. An upward extension of the lever 59 is connected by a link 6| to an arm 62 loose on an auxiliary differential engaging shaft 63 journaled in the frames 48 and 4!. The arm 82 has a step 64 adapted to cooperate with a stud 65 in one arm of a three-armed lever 68 loose on a stud 61 in the frame 40. An upwardly extending arm of the lever 66 is bifurcated to embrace a stud 68 in a release plate 69 pivoted on a stud 18 in the frame 48. The plate 69 has a stud 1| straddled.

by the bifurcated lower end of a stem 12 of a starting bar 13 slidablysupported by an auxiliary keyboard plate 98. Another stem 14 of the bar 13 is loosely connected by a stud 15 to a rearwardly disposed arm of the lever 88. A spring 16 urges the plate 69 clockwise and the lever 66 counterclockwise to normally maintain the stud 65 in the path of the step 64. Depressing the starting .bar' 13 rocks the plate 69 counter-clockwise and the lever 66 clockwise to move the stud 65 out of the 'path of the step 64. This allows a torsion spring 11 (Fig. 3) to rock the lever 59 counterclockwise to move the car 58 out of the path of the upper end of thearm 51. A spring 18 then.

urges the arm 51 and the crank 55 counter-clockwise to expand the band 54, thereby causing it to rip the inner surface of the constantly revolving clutch driving member 46. a

In all machine operations except overdraft operations, the clutch driven member 41, the gear 52, and the main drive shaft 53 make one counterclockwise revolution. Near the end of rotation of the shaft 53, a stud 19 in the gear 58 engages an ear 80 of the lever 59 to rock said lever clockwise. Consequent clockwise movement of the arm 82 moves the step 64 beyond the stud 65, allowing the spring 16 to restore the lever 66 to normal position, so that the stud 55 retains the plate 62 and lever 59 in untripped position. Returnmovement of the lever 59 moves the ear 58 in the path of the arm 51, which, upon engagement therewith, disengages the .clutch driven member from the clutch driving member.

. Loose on a stud 8| (Fig. 1) in the motor frame is a return lever 82 urged clockwise by a spring 83 tensioned between said lever and a study 84. The upper end of the lever 82 has therein a camming notch, which, in cooperation with a roller 85 carried by the gear 49, completes return movement of the machine operating mechanism to home position after the clutch is disengaged as related above. An extension 86 of the lever 82, in cooperation with the stud 84, limits clockwise movement of said lever when the roller 85 moves out of engagement therewith.

Referring to Fig. 3, a simple and efficient device is provided to prevent repeat operations of the machine in case the starting bar is retained depressed. This mechanism inc udes a non-repeat latch 81 loose on the shaft 61. Said latch 81 is urged clockwise and normally maintained in contact with a stop stud 88 in the lever 65 by aspring 89. Clockwise releasing movement of the lever88 moves a hook 93 of the latch 81 into the path of a similar hook 94 on the arm 82. In case the starting bar 13 is'retained depressed during the restoration of the arm 82, the hook 93 latches overthe hook 94 when hook 94 is restored by stu'd '19 engagingthe car 88, and prevents a repeat operation of the machine by retaining said arm 62 and the lever 59 in untripped position. As

' shaft 53 are companion cams and 31, the

peripheries of which are adapted to cooperate with rollers. (only one shown) carried by a Y- shaped lever I loose on a stud in the frame 40. The lever I00 has a stud I02 which extends through a slot I03 in an.arm I04 secured to a leading frame shaft I05 journaled in the frames 40 and 4|. During each machine operation, the cams 96 and 91, by means of the lever I00, oscillate the arm I04 and the shaft I05 first counterclockwise and then back to normal position through an approximate angle of 40 degrees.

Shown in Fig. 11 is the means for operating the printer mechanism. Secured on the main drive shaft 53 are companion cams I00 and I01 cooperating respectively with rollers I00 and I0! carried by a cam arm IIO loose on the stud IOI. The arm III! has a stud III adapted to cooperate with a notch in a link I I2, the upper end of which is connetced to an arm II3 resiliently connected by a spring I to an arm II5 secured on a printer shaft IIO journaled in the frame 40 and in the printer frame (not shown). The notch in the link H2 is constantly engaged with the stud I I I except in overdraft operations, and the mannor in which said link II2 functions in overdraft operations will be described later herein. Counter-clockwise revolution of the shaft 53, by means of the cams I06 and I01, the arm I00, link H2, and arms H3 and H5, oscillates the printer shaft I I0 first clockwise and then back to normal position to cause the printing mechanism to function.

Totalizer and printer actuating mechanism Fig. 12 illustrates the totalizer and printer actuating mechanism for one denominational unit of the machine. As this mechanism is substantially duplicated in each denominational unit, it is felt that the description of the one unit here shown will be sufficient for the purpose of this specification.

An actuator leading frame H1 is formed by .means of two depending arms secured at opposite ends of the shaft I05 connected by a cross-bar or bail II8. Loose on the shaft I05 is a printer reducing segment H9, a downward extension of which is maintained in contact with the leading frame hail IIO by a spring I20 stretch'ed between said reducing arm and said bail. The segment I I0 carries a stud I2I embraced bya vertical slot in an actuator rack I22 mounted for horizontal reciprocating movement by means of a grooved .rod I23 and a bar I24 cooperating with the rearwardly disposed bifurcated end of said rack I22.

The rod in and the bar I24 are supported by the frames 40 and 4E. The rack I22 has a series of graduated steps I25 which cooperate with corre-' ported by the shaft H0. Loosely connected to the arm I33 is an anti-rebound plate I 34 which cooperates with an anti-rebound pawl I35 connectedby a spring I 30 to a printer yoke I31 loose on the shaft 0. The plate I34 has a plurality of projections, one of which cooperates with a zero elimination pawl I30 pivoted on a rod supported by the printer frame and having an armate tail I43 which cooperates with a stud I44 in a forwardly extending arm of the segment I30. Each pawl I30 has a bent-over lug. I45 which overlies its higher order neighbor. Another projection of the plate I34 is engaged by a printer release trigger I40 rotatably supported in the printer frame.

Depressing one of the amount keys I21 releases the zero stop pawl for its related rack I22 and moves the stud I25 of the depressed key into the path of the corresponding step I25 on said rack I22. Initial movement counter-clockwise of the shaft I05 and the leading frame II1, by means of the spring I20, moves the segment H9 and the rack I22 in unison therewith. Rearward movement of the rack I22 ishalted when the step I25 engages the stud I20 of the depressed amount key; However, the leading frame II1 completes its cycle of movement, stretching the spring I20. This positions the actuator rack commensurate with the value of thedepressed key, and the segment H9, by means of the link I3I, positions the type carrier 44 accordingly. When the segment 9 moves away from zero position, the stud I44, in cooperation with the arcuate tail I43, rocks the zero elimination pawl I30 counter-clockwise against the tension of a spring ill to allow printing movement of the plate I34, arm I33, and type carrier 44. The pawl I30, by means of the overlying ear I45, disengages all the lower order zero elimination pawls from their corresponding plates I34, so that the zeros will print in the lower denomination. When the leading frame II1 reaches the terminus of its initial movement counter-clockwise, the printer releasetrigger I46 is rocked counter-clockwise, by mechanism not shown, to release the plate I34 and the arm I33 to the action of the spring I30, which has been further tensioned by clockwise movement of the yoke I31. This causes the type carriers 44 to engage the conventional inking ribbon and carry it into contact with the record material carried by the platen roll 43 to record the value of the depressed key.

After impression is completed, return movement clockwise of the leading frame II1 returns the segment II9, the rack I22, and the type carrier 44 to zero position, and return movement counter-clockwise of the yoke I31, by means of a rod I41 supported thereby, restores the plate I 34 and the arm I33 to zero position, as shown in Fig. 12.

Secured on the shaft 53 (Fig. 13) are companion cams I40 and I49 cooperating respectively with rollers I50 and I5I carried by a cam arm I52 flexibly connected by a spring I53 to the left arm of a two-armed aliner frame I54, both of said arms of said two-armed aliner frame I54 being secured to a shaft I55 journaled in the frames 40 and H. After the rack I22, the segment H9, and the type carrier 44 have been positioned in the manner explained above, the cams I40 and I 40 rock the frame I54 clockwise to cause an alining barf I56 carried thereby to engage the proper tooth space in the segment II9 to position said segment and the type carrier 44 during impression. Immediately after an imin the customary manner.

pression has been made, the aliner bar I56 is rocked out of engagement with the segment ll 9.

Totalz'zers sponding wheel of the selected totalizer is rocked into engagement with one of the two sets .of teeth carried by said rack," or one of two sets of teeth carried by an extension I39 of the rack 522. Return movement forwardly of the rack 522 rotates the wheel of the engaged totalizer commensurate with the value of the depressed amount key to add this amount therein.

In subtracting operations, the corresponding wheel of the No. 1 or balance totalizer isrocked into engagement with the rack E22 prior to its initial movement rearwardly, which movement rotates said wheel reversely to subtract the value of the depressed amount key therefrom. Each of the totalizer wheels carries a transfer cam M0, which, when a totalizer wheel passes through zero, engages and trips an add pawl lfll for the next higher denomination, thereby causing one to be added in said denomination. Likewise, in subtract operations, when a wheel of the No. 1 totalizer is rotated reversely to zero, the transfer cam M0 therefor engages and trips 2. subtract transfer pawl 842 to cause one to be subtracted from the next higher denomination.

In total taking operations, the corresponding wheel of the selected totalizer is engaged with the rack i122 prior to its initial movement rearwardly, which movement rotates said wheel in a reverse direction until said wheel is stopped in zero position by one of the teeth of the transfer cam M0 engaging the inner surface of its add transfer pawl MI. This positions the rack E22 and the type carrier 84 commensurate with the amount on the totalizer wheel. The difierence between a read and a reset total taking operation is that in read operations the wheel of the selected totalizer remains in engagement with the rack l22 during its return movement forwardly and is therefore returned to its former position, and in reset operations the wheel of the selected totalizer is disengaged from the rack 822 before said rack starts its return movement forwardly, thereby leaving said wheel standing at zero.

Rack retaining mechanism Mechanism is provided to take the strain off of the actuator racks in total taking operations due to the excessive tensioning of the springs 820 (Fig. 12) when said racks are stopped in one of their earlier positions by means of the transfer cams I 40 in cooperation with the transfer pawls I when there is a small amount on the totalizer. Thismechanism likewise insures that the racks are returned fully to zero at the end of machine operation.

At the beginning of machine operation, the 1 rack retaining mechanism is moved to iii effective position. After the leading frame I I! has completed its initial movement counter-clockwise and the rack I22 has been positioned as explained above, the rack retaining mechanism is moved to effective position to relieve the excessive a e'm'eo strain on the rack and totalizer transfer mechanism during return movement of the leading frame H1. This mechanism will now be described in detail.

Referring to Fig. 12, each of the racks I22 has on the lower edge thereof a series of ratchet teeth i5! adapted to cooperate with spring pawls i58 secured on a retaining pawl plate l5!) rotatably supported by trunnions 860 in the frames ttland 4|. Secured to the plate I59 is a cam arm .l6l with a roller H62 which is maintained in contact with the periphery of a plate cam 563, secured on the main shaft 53 by a spring, shown in the parent case but not shown herein, which is tensioned to urge the plate H59 in a clockwise direction. I

At the beginning of machine operation the cam i163 rocks the plate 859 counter-clockwise to disengage the pawls I58 from the ratchet teeth I51.

After the leading frame H'l'has completed its initial movement counter-clockwise and the racks l22 have been positioned by means of the trans fer cams 840 in cooperation with the transfer pawls Mi as explained earlier herein for total taking operations, the cam Q63 returns the plate 559 clockwise to reengage the pawls 558 with the teeth l 51. The plate l59 remains in this position throughout the remainder of machine operation, return movement of the racks E22 causing the teeth J51 to ratchet over the pawls I58. This mechanism relieves the transfer mechanism of the strain caused by the springs l2!) when the actuator racks H22 are stopped early in their initial movement rearwardly; This mechanism also insures that the racks are returned fully to zero position at the end of machine operation.

Totalizer selecting and controlling mechanism The adding functions of the diiferent totalizers are controlled by means of control elements located in columnar positions on the traveling carriage in cooperation with hanging bar levers. The subtract function of the No. l or balance totalizer is controlled either by control-elements on the traveling carriage or by means of a Subtract control key. A Non-add" control key is provided to prevent addition in any of the totalizers when it is desired to record an amount or item without having said amount or item entered in a totalizer. The total taking functions of the present machine are controlled by means of Total and Sub-total control keys. Adding and subtracting operations may be repeated by means of a fRepeat control key and an Error" key is provided to release depressed amount and control keys. I

Inasmuch as the totalizer selecting and controlling mechanism is substantially duplicated for each totalizer, it is felt that the explanation of this mechanism in connection with one totalizer will be suflicient. Due to the manner in which the mechanism is illustrated, the functioning of the controlling mechanism in adding and total taking operations will be explained in connection with the lower rear or No. 4 totalizer and in subtracting operations. the controlling mechanism will necessarily be explained in connection with V the No. 1 or balance totalizer.

Overdraft mechanism Overdraft key is unlocked and the N0. 1 "Total key is simultaneously locked against depression The locking of the No. 1 "Total key notifies the operator that the balance totalizer is in an overdrawn condition. At this time, the operator may pursue either of two courses. The No. 1 Total key may be manually unlocked and the balance operation continued, or the Overdraft key may be depressed to release the machine for an overdraft operation in which the complementary amount of the overdraft is transposed to a true negative amount and recorded. The overdraft mechanism used in the machine of this invention is basically the same as that illustrated and described in co-pending application for United States Letters Patent of Charles L. Lee, filed April 14, 1932, Serial No. 605,160, which issued on May 4, 1937, as patent No. 2,079,355. However, installation of the rotary drive shaft necessitated numerous changes in the overdraft mechanism in order to adapt it for use in the present machine. Therefore all the new mechanism and all the mechanism affected by the installation of the rotary drive shaft will now be described in detail and description of the overdraft mechanism not explained herein may be had by referring to the patent mentioned above.

Directing attention to Figs. 1, 2, 3, and 5, the "Overdraft key 408 is composed of two parts, an upperp-art or stem 409 and a lower part or pitman 410. The stem 409 is slidably mounted by means of the upper end thereof, which extends through an opening in the auxiliary keyboard plate 90 and a slot in the lower end which fits loosely over a stud 4Il secured in the frame 40. The pitman M is mounted to slide in harmony with the stem 409 by means of slots in said pitman in cooperation with the stud 4H and a stud 4I2 carried by an auxiliary plate 4I3 secured to the frame 40. The stem 409 is normally connected to the pitman 410 by means of a latch 4I4 pivotally connected to said stem and having an ear which is urged into engagement with a notch-in said pitman by means of a spring 4l6 which also urges the stem upwardly to normally maintain a shoulder thereof in contact with the lower surface of the plate 90. In case the overdraft key is'inadvertently retained depressed at the end ofan overdraft operation, mechanism presently to be described rocks the latch 4l4 counterclockwise to disengage the ear 5 from the pitman 4 I 0 to allow said pitman to return to normal position independently of the stem 409.

A spring 1 urges the pitman 4l0 upwardly to normally maintain,- an upward extension 4l8 thereof in contact with the lowersurface of the plate 90. A link M9 is connected at its upper end to the pitman 410 and is slotted at its lower end to receive the stud in the releasing lever 66.

When the No. 1 totalizer is not overdrawn, the overdraft key 408 is locked against depression. This is accomplished by means of a latch 420 (Figs. 8 and 9) loose on the stud 4| 1, said lat'ch having a notch in an upward extension thereof, which, in cooperation with a bent-over extension 421 of the pitman 4l0, block s downward movement of said pitman. The latch 420 is connected by a link 422 to an arm 423 secured to an over-.

which the overdraft shaft is restored counterclockwise to normal position will be explained later herein.

The overdraft shaft 424 (Figs. 16 and 18) has secured to its left end an arm 425 connected by a link 426 to pitman 421 which is in turn connected to the upper end of a latch 428 loose on a stud 429 in the frame 4|. Movement imparted to -the. shaft 424, which is clockwise as viewed in Fig.

8 and counterclockwise as' viewed in Figs. 16 and 18, by means of the arm 425, link 426, and pitman 421, rocks the latch 428 counterclockwise to cause a bent-over ear thereof to enter a notch in the stem of the No. 1 Total key to lock said key against depression when the balance totalizer is overdrawn.

The functioning of the balance totalizer and of the auxiliary differential is controlled in overdraft operations by means ofa cluster of cams driven by means of a pinion 430 (Figs. 1, 2, and 5) secured to the shaft 53 and connected by a pinion 431 rotatably mounted on the plate 413 to an overdraft drive gear 432 loose on the stud 61 in the frame 40. The ratio between the gear 432 and the pinion 430 is such that one revolution of the shaft 53 in a counter-clockwise direction rotates the gear 432 one-third of a counterclockwise revolution. Secured to the gear 432 is a collar 434 (Figs. 5 and 7) with three equally spaced notches adapted to cooperate with the tooth 435 of a pawl 436 pivotally connected to a disk 431 assembled with a plurality of overdraft control cams which form a cluster 438 rotatabiy supported by the stud 61. It is therefore obvious that in overdraft operations which consist of three cycles of movement of the machine, operating mechanism, the gear 432 will make one counter-clockwise revolution. The disk 431 and its associated cams are assisted to and maintained in home position by means of a lever 439 (Fig. 1) pivoted on the rod I23 and carrying a roller 440 which is urged into cooperation with a V-notch in the disk 431 by a spring 44I.

When the Overdraft key 408 (Fig. 5) is in undepressed position, a camming surface on a projection 442 of the pitman 410 engages a tail 443 of the pawl 436 to maintain said pawl disengaged. from the notches in the collar 434. Consequently, during regular machine operations the gear 432 and collar 434 rotate idly without imparting any movement to the cam cluster 438. Depressing the Overdraft key allows a spring 444, assisted by an angular extension 445 of the pitman M0, to rotate the pawl 436 counter-clockwise to engage its tooth 435 with one of the notches in the collar 434. Also, depression of the Overdraft key, by means of the link 419 (Fig. 3), rotates the release lever 66 to release the machine for operation in the manner previously explained.

' In order to insure that the machine operates through three cycles in overdraft operations, the Overdraft key is retained depressed by locking mechanism presently to be described, and a finger 450 of the link 4l 9 moves in the path of an abrupt surface 446 of the non-repeat latch 81 to prevent the functioning of said latch while the overdraft key is depressed.

Mechanism for locking the Overdraft key depressed consists of a latch 441 (Figs. 8 and 9) [loose on the stud 4H and having a stud 460 to which is connected one end of a link 448. The

other end of the link 448 is connected to a .bell crank 449 loose on a rod I23, which also rotatably supports the lever 439 (Fig. 1). The bell crank 449 carries a roller 45! adapted to cooperate with the periphery of a cam 452 which is a part of the cluster 438. A spring 453 urges the bell crank 449 clockwise, which, by means of the link 448, also urges the latch 441 clockwise to maintain a projection 454 thereof in contact with the inner surface of the extension 428 of the pitman 4). Depression of the Overdraft key 408 allows the latch 441 to hook over the top edge of the extension 42! to lock said Overdraft operations. Near the end of an overdraft operation a node 455 of the cam 452, in cooperation with the roller 45l, rocks the bell crank 448 I counter-clockwise to disengage the latch 441 from the extension 42l to allow the overdraft key to be restored upwardly by the spring 411 pendently of said stem, as'previouslyexplained.

it will be recalled, by referring to Fig. 8, that an overdraft causes the overdraft shaft 424 to receive clockwise movement to unlock the Overdraft key. The manner in which the overdraft shaft is restored to normal position and the latch 326' is returned to locking position will now be described.

Iurnably mounted on the latch 420 (Fig. 9) is a pawl 356 with a tooth 451 urged clockwise into communication with asimilar tooth 458 on the latch 44?, by a spring 459. Counter-clockwise releasing movement of the latch 441 causes the tooth 458 to move beyond the tooth 451; there fore, when the spring 453 (Fig. 8) returns the bell crank 449 and the latch 441 clockwise, the latch 426, by means of the pawl 456, moves in unison with said latch and, by means of the link 322 and arm 423, restores the overdraft shaft 424counter-clockwise to normal position. The pawl 456 remains engaged with the tooth 458 until in a subsequent operation upward movement of the arm H2 (Figs. 8, 9, and 11) causes a stud 363 therein to engage a tall 464 of the pawl 656 to disengage said pawl from the tooth 458, leaving said parts in their normal positions, as shown in Fig. 9.

As previously stated, it is necessary to disable'the printing mechanism during the first two cycles of overdraft operations in order to prevent complementary overdraft entries from being made upon the record. material. The mechanism for accomplishing this result is shown in Figs. 8 and 11 and will now be described.

A link 465, the forward end of which is loose on the stud 463, connects the link 2 to an upward extension of a lever 466 loose on the rod B23. The lever 466 carries rollers 461 and 468 which cooperate respectively with companion cams 469 and 410 which form an integral part of the assembly 438 (see also Figs. and 7). At the beginning of an overdraft operation, the

cams 468 and, 418 rock the lever 466 counterclockwise, which, by means of the link 465, moves the link H2 clockwise to disengage the notch therein from the stud HI in the cam lever ll6 and to en age another notch "I in said link with a stat onary stud 412 to secure the printing mechanismin ineffective or home position during the first and second cycles of an overdraft operation. At thebeginning of the third cycle of an key depressed during overdraftoverdraft operation, the cams 469 and 410 return the lever 466 clockwise to reengage the link H2 with the stud HI so that the printing mechanismwill function to print the true negative amount of the overdraft.

Auxiliary difierential As previously stated, the machine'of this invention has an auxiliary differential into which the complementary overdraft is temporarily transferred when the balance totalizer is cleared in the first cycle of an overdraft operation. In the second cycle of an overdraft operation, the cleared balance totalizer is selected for a subtract operation and the wheels of the auxiliary differentialcontrol the movement of the actuator racks 922 (Fig. 12) in their initial movement rearwardly, consequently the complementary amount of the overdraft is subtracted from the cleared No. l or balance totalizer. It is obvious that this results in the true negative amount of the overdraft being stored in the No. 1' totalizer.

loosely mounted on the rod I23. Each of the arms 4776 carries a roller 411 embraced by camming slots in two symmetrical arms 418 secured at opposite ends of the engaging shaft 63 journaled in the frames 40 and 4L Secured on the righthand end of the shaft 63 is a crank 48!) with a roller 48! adapted to cooperate with the periphcry of a plate cam 482 which forms an integral part of the cluster 438, which, as previously stated, makes one counter-clockwise revolution each overdraft operation. Springs 483 com nected to the arms 411 urge said arms and the shaft 63 clockwise to maintain the roller 48l in I contact with the periphery of the cam 482.

' Before explaining the manner in which the auxiliary differential functions, it will probably be advantageous to describe the mechanism which controls the functioning of the balance totalizer in overdraft operations.

Control of the balance totalizer in overdraft operations Mechanism to control the functioning of the balance totalizer during overdraft operations will now be described.

Loose on the rod m (Fig. is a bell crank 484 with a roller 485 which is urged by a spring 481 into communication with the periphery of a cam 486 assembled with the cluster 438. The bell crank 484 is connected by a link 488 to a crank 489 secured on the righthand end of a control shaft 493 joumaled in the frames 46 and 4|. Secured on the lef thand-end of the shaft 483 (Figs. 10, 17, and 18) is an arm 484 with a stud 485 embraced by the bifurcated end of a link 496, the rearward end of which is connected to a downward extension on theNo. 1 control lever 368. The stud.495 (see also Fig. 16) is embraced by the hook-shaped forwardend of a subtract control link 481,"the rearward end of which'is con- No. 2 add control arm 499 which controls the adding function of the No. 2 totalizer in exactly the same manner as the arm I86 (Fig. 16) controls this function in the No. 4 totalizer.

In the beginning of the first cycle of an overdraft operation, counter-clockwise movement of the cam 486 (Fig. 10) allows the spring 481 to rock the bell crank 484 clockwise, which, by means of the link 488, rocks the shaft 493 and the arm 494 also clockwise as here viewed'and counter-clockwise as viewed in Figs. 16, 1'7, and 18. This movement of the arm 494, by means of the link 496, rocks the lever 369 clockwise as viewed in Fig. 17 to move the pitman 322 (Fig. 18) upwardly into engagement with the stud'346 in the engaging plate 338 to engage the No. 1 totalizer for a clearing operation in exactly the same manner as explained for the No. 4 totalizer,

Clockwise movement of the engaging plate 338 engages the wheels of the No. 1 totalizer with the actuator racks I22 (Fig. 12) prior to their initial movement rearwardly. Initial movement of the racks I2 rotates the No. 1 totalizer wheels reversely to zero to position said actuator rack commensurate with the amount thereon. Upon completion of the rearward movement of the racks I22, the wheels 413 of the auxiliary differential 415 are moved into engagement with their corresponding auxiliary racks 414. This is accomplished by means of the cam 482 (Figs. 14 and 15), counter-clockwise movement of which, in cooperation with the roller 48I, rocks the arm 488, shaft 63, and engaging arm 418 counterclockwise. The configuration of the cam slots in the arms 418, in cooperation with the rollers 411, rocks the auxiliary differential upwardly or counter-clockwise to engage the wheels 413 with the auxiliary racks 414. The wheels of the auxilia'ry differential have positive stops which locate them in zero position, and these wheels are always standing at zero prior to their engagement with the auxiliary racks 414. After the wheels of the No. 1 or balance totalizer have been turned to zero by initial movement of the racks I22, return movement of the plate 338 disengages said totalizer wheels from'said actuator racks. Return movement forwardly of the racks I22 in the latter part of the first cycle of an overdraft operation rotates the auxiliary differential wheels 413 to transfer the complementary amount of the overdraft from the No. l totalizer to the auxiliary differential.

Due to the fact that the detent 358 (Fig. 1'1) and the No. 1 Total key receive no movement in overdraft operations, it is necessary to employ a link 590 loose on the stud 359 in the lever 368 and bifurcated to receive the stud 389 in the bell crank 393 so that clockwise movement of the lever 369 will be transmitted to the bell crank 393 to move the stud 395 into the path of the lever 499 to cause any depressed amount keys to be released at the beginning of an overdraft operation. Further details of the releasing mechanism may be found in the parent case.

By observing Fig. 10 it will be understood that the shaft 493 and associated parts have three positions, a neutral or home position in which said parts are here shown, a rearward or clockwise position to select the balance totalizer for clearing operations, and a forward or counter-clockwise position to which a raised portion 58I of the cam 486 rocks said parts in the beginning of the second cycle of an overdraft operation. This shifts the links 491 and 498 forwardly (Figs. 16 and 18) to rock the subtract control arm "I for the. balance totalizer and the add control arm 499 for the No. 2 totalizer to respectively select said totalizers for'subtract and adding opera-' tions.

In the second cycle of an overdraft operation, initial movement rearwardly of the actuator racks I22 rotates the wheels of the auxiliary differential, which are still engaged with the auxiliary racks 414, back to zero position. It is apparent that at this time the auxiliary differential controls the positioning of the actuator racks I22.

Therefore, the complementary amount of the overdraft which was stored in the auxiliary dif are now standing at zero, are disengaged therefrom. I

It is to be understood that the adding of the complementary amount of the overdraft during the second cycle of an overdraft operation is not limited to the No. 2 totalizer, but this amount may be added into any one or as many of the totalizers as desired. This may be accomplished by connecting the link 498 (Fig. 18) to the desired add control 'arm or arms.

A link 58I (Figs. 10 and 16) is hook-shaped on both ends to fit over a stud 582 in the arm I 494 and the stud 389 in the bell crank 393. This link provides a means of transmitting the clockwise movement of the arm 494 as observed in Fig. 16 to the bell crank 393 to cause any depressed amount key to be released at the beginning of the second cycleof an overdraft operation.

In the third cycle of an overdraft operation the cam 486 (Fig. 10) again selects the No. 1 or. balance totalizer fora clearing operation. It will be recalled that the mechanism illustrated in Fig. 11 connects the printer actuating mechanism to its operating lever I III at the beginning of the third cycle of operation. Therefore, in this final. cycle of an overdraft operation, the No. 1 or balance totalizer is cleared and the true negative amount of the overdraft is printed upon the record material.

It is felt that a clear understanding of the operation of the machine will have been obtained from the preceding specification, and for this reason no description of operation in connection with a particular business system has been included herein. However, the machine of the present invention is very flexible in nature and may,

with minor adjustments and changes, be adapted for use in the majority of present-day businesses.

While the form of mechanism herein shown and described is admirably adapted to fulfill the objects primarily stated, it is to be understood that it is not intended to confine the invention to the one form or embodiment herein disclosed, for it is susceptible of embodiment in various forms, all coming within the scope of the claims which follow.

What is claimed is:

l. Ina machine of the class described, adapted to perform regular and overdraft operations, the combination of an overdraft control member comprising two elements adapted to move in unison to release the machine for an overdraft operation;

a latch connecting the elements; means to retain 15 the control member in moved position during overdraft operations; means to release the retaining means near the end of an overdraft operation; and means whereby the releasing means disengages the latch when one of the elements is retained in moved position to allow the-other element to be restored to normal position.

2. In a machine of the class described adapted to perform regular and overdraft operations, the combination of an overdraft control member; a separate fingerpiece for the member; a latch to normally connect the flngerpiece to the member; means to retain the control member in moved position during overdraft operations; and means to release the retaining means near the end of an overdraft operation, said releasing means in cooperation with the retaining means also adapt? ed to disengage the latch when the fingerpieoe is held down to allow the control member to return to normal position.

3. In a machine operable to perform plural cycle overdraft operations, the combination of 'an overdraft key; a cycle controller operable to; control the operationof the machine in overdraft operations; a gear operable to make a complete rotation during the plural cycles of an overdraft operation; and clutch mechanism rendered operable by said overdraft key each time the key is operated, for coupling the cycle controller to the gear for operation thereby.

,4. In a machine of the class described having totalizeis, totalizer engaging mechanism, diiTerential mechanism, storage devices, and printing mechanism, the combination of a rotatable main shaft having means thereon to operate the totalizer engaging means, the difierential mechanism,

and the printing means; a cycle control mechanism operable to selectively control the operation of the totalizer, printing means, and storage dearemeo vices during a plurality of cycles of an overdraft operation; means for driving the cycle controller including a gear operable to make one complete rotation during the plural cycles of an overdraft position and a gear on the rotatable main drive shaft for driving the first mentioned gear; and means for rotating the main drive shaft.

5. In a machine of the class described operable in single cycle operations and plural cycle overdraft operations and having a totalizer, totalizer engaging mechanism, differential mechanism, a storage device, and printing mechanism, the combination of a rotary drive shaft having means thereon to operate the totalizer engaging means, the differential means, and the printing means; controlmechanism operable to selectively control the operation of the totalizer engaging means, the

printing means, and the storage device in true negative total printing operations; and means on the rotary drive shaft for operating the control mechanism in true negative total operations.

6. In a machine of the class described, a rotatable drive shaft; a control means operable during three cycles in overdraft operations; means for driving the control means including a gear on the drive shaft and a second gear meshing therewith operable one third of a revolution for each rotation of the first gear; a disk fast to the second gear and having three equispaced notches in its periphery; a pawl pivoted on the control means and operable to engage the notches in the disk to connect the control means to the second gear for operation thereby; and an overdraft key for controlling the operationof the pawl.

LEEFE JANE LEE, Executria' of the Estate of Charles L. Lee, De-

ceased.

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