US1688945A - shipley - Google Patents

Description

i B. M. SHIPLEY CASH REGISTER Filed April' 22, 1926 4 Sheets-Sheet 1 Berni: M. Shipley Bilpvbw FIG.9

Oct. 23, 1928. 1,688,945

B. M. SHIPLEY CASH REGISTER v Filed April 22, 1926 4 Sheets-Sheet His A'ITOlKl-ZYS Oct. 23, 1928.

B. M. SHIPLEY CASH REGISTER Filed April 22, 1926 4 Sheets-Sheet 3 mmT gnu; lo L Berni: Shipl y His M Oct. 23, 1928. 1,688,945

B. M. SHIPLEY CASH REGISTER Filed April 22, 1926 4 sheets-spat 4 FIG.6

Benin Shiplcy Hi! (1H0: nzuf Patented Oct. 23, 1928.

UNITED STATES PATENT OFFICE.

BERNIS M. SHIPLEY, OF DAYTON, OHIO, ASSIGNOR TO THE NATIONAL CASH REGISTER COMPANY, OF DAYTON, OHIO, A CO RIORATION OF MARYLAND.

oAsn REGISTER.

Application filed A rii22, 1926, Serial No. 103,818.

This invention relates to cash registers, and more particularly to those of the type shown in the patent, to F. L. Fuller, No. 1,242,170, issuedOctober 9, 1917, and the co-pending application of B. M. Slnpley, Serial No. 686,564. filed January lG, 192d.v

The principal object of this invention is to enforce the positioning of an adding and subtracting totalizer with the adding wheels thereof in operative position, after an operation in which a negative balance was printed in which operation the totalizerwas moved to a position whereinthe subtracting wheels were in operative position. l

With these and incidental ob ects in view, the invention consists of certain novel tea: tures of construction and combinations ot parts, the essential elements of which are set forth in appended claims, and a preferred form of embodiment of which is hereinaiter described'with reference to the drawings,

which accompany and form part of this specification.

Of said drawings:

Figure 1 is a vertical sectional view taken Figure 5 is a view in rear elevation ot theupper totalizer line, which carriesthe add- 1 ing and, subtracting totalizcr, together with i the mechanism for shifting this line laterally.

Figure 6 is a detail view in side elevation of the total lever'plate and some of the 1T100li anisin which co-operates therewith.

Figure 7 is a detail. side view of the total lever locking mechanism in the. position which is occupied on a normal adding operation. I

Figure 8 is a detail side view of the mecha nism shown in Figure '7 with the parts in their locking positions. 5

Figure 9 is a fragmentary view showing the total lever and locks'theretor.

General description.

The nnichine to which the present tellibfi li ,ment of the invention is shown applied, is provided With an adding and subtracting totalizer, which is very similar in construction andoperation to that shown in the Fuller actuators, and when a subtraction is to be made, the totalizer is shifted laterally .so that the subtracting wheels thereof are in cooperative relation with said actuators. Should a greater amount be subtracted from the totalizer than is standing thereon, a negative balance on the subtracting Wheels results. It is possible, if desired, to print this negative balance and reset the subtracting wheels to zero. It isevident that-should this operation take place the adding wheels will all stand at 9, when the subtracting wheels stand at zero, and with the machine in this condition, if an amount is added on the next operation the result will, of course,

be incorrect. Means is therefore provided by this invention to lock the total lever in the position in which it was placed to take the negative balance and prevent its return to a normal adding position,until the ma.-

chine has been given a single blank operation. The object of this blank operation is to move the totalizer to the adding position and to reset the adding wheels to zero, thereby printing the 9.s. The totalizer is now in condition to receive entries. The means for accomplishing this result will now be described.

Keyboard.

The machine to which the invention is applied is provided with a plurality ot'banks of amount keys (Fig. 1), slidably mounted in a key frameBl, supported by two rods 32, mounted in the side frames 33 of the-machine. These amount keys 30 are normally :held in their outer undepressed positions by means of springs (not shown); When a key 30 is depressed, it is latched in its depressed position by the. engagement ofa shoulder projecting therefrom, .With a stud carried by a movable detent bar 34,'such as is well known in all'machines of this t pe. i Appropriate to each bank 0 amount Keys is a stop pawl- 35, which on a short shaft 36, supported by the key frame 31. \Vhen any key in its appropriate bank is depressed, the Zero stop pawl therefor is rocked counter-clockwise to its ineffective position through the agency of a hooked link 3'7, which pivotally supports the lower end of the detent bar 3 1, and which cooperates with a pin 38 projecting from the side of an arm fixed to said shaft 36.

In addition to the amount keys, there are usually three banks of transaction keys. In this application only one of these banks is shown 4), as the other banks of transaction keys have nothing whatever to do with the invention herein. This bank of keys is identical with the bank of keys shown in Fig. 13 of the above-mentioned Shipley application. The bank of keys shown in Fig. 1 will be known herein as the balance bank. It is provided with five keys. The two lowermost keys 39 are subtracting keys and the three upper keys 40 are adding keys. All of these keys are mounted in a manner similar to the amount keys, in a key frame 31, supported by the rods 32. This bank is also provided with a Zero stop pawl 35, identical with that previously described.

The keys 39 and 40, when depressed, are latched in their depressed positions by means of hooks ll, projecting from a detent pivotally supported dctent bar 42, and cooperating with pins 43 on the keys. Suitable means are provided for releasing the keys at the end of each operation.

Release mechanism.

In all machines of this type there is a release shaft which in this case is a shaft (Figs. 2, 3 and 4;). This shaft is adapted to be rocked in a clockwise direction by means of a powerful spring, which is not shown in this application, as this spring with its cooperating mechanism is very well known in machines of this type. In the normal position of the parts, the release shaft 50 is prevented from being rocked under the influence of the above mentioned spring by the engage ment of a half-round stud 51 (Fig. 3), carried by an arm 52, fast to the shaft 50, with an arresting arm 53 loose on a shaft 55. So long as the arresting arm 53 remains in alignment with the flat face of the half-round stud 51, the shaft 50 cannot be rocked clockwise by the spring above mentioned, to release the machine.

When the proper keys in the keyboard have been depressed, the machine is adapted to be released by a motor bar 56 (Fig. 2), the shank of which has a bifurcated end 57, adapted to embrace a pair of studs 58, carried by a plate 59, which in turn is slidably mounted on a pair of studs 60 and 61, supported by the machine side frame. The plate 59 also carries a pin 62 projecting through the right hand side frame of the machine (not shown in this figure), which pin cooperates with the bifurcated end of one arm of a lever 63, pivoted on a stud 6% on the inside of the righthand side frame. At its opposite end, the lever 63 carries a pin 65, which projects through the bifurcated end of an arm 66, loose on the shaft 55, also supported by the machine side frame. The arm 66 is made integral with a hook member 68 by means of a yoke 69. Depression of the motor bar 56 rocks, the hook member 68 clockwise about the shaft 55, as shown in Fig. 2.

The hook 68 takes over a pin 70 carried by an arm 71 to rock the arm 71 clockwise upon the clockwise movement of said hook member. Integral with the arm 71 is a bifurcated arm 72 connected thereto by a yoke 73. The bifurcated portion of the arm 72 embraces a pin 74 carried by the arresting arm 53 which normally obstructs the movement of the stud 51, and thereby prevents the release of the machine. Therefore, when the arm 71, yoke 73 and arm 72 rocks clockwise, it can be seen from Figs. 2 and 3 that the arresting arm 53 rocks counter-clockwise about the shaft 55 to free the stud 51 arm 52 and release shaft 50. As soon as this arresting arm raised out of the path of the stud 51, the arm and shaft 50, are rocked clockwise under the influence of the before-mentioned spring (not shown) to permit operation of the cash register. The stud 51 is then positioned between the arresting arm 53, and a locking arm 54c, loose on the shaft 55, and connected to the arresting arm 53 by means of a spring 7 5. The locking arm 54 prevents release of the machine until after the motor bar is pcrmitted to return to its outermost position, after the operation of the machine has been completed, in the well known manner, and is fully disclosed in the Fuller Patent, No. 1,242,170, above referred to.

The differential mechanism of the machine is employed to differentially operate the different totalize-rs and to select them for operation, and also to set type carriers in the print ing mechanism as controlled by the banks of keys. The amount differential mechanism will be described first.

Amount different 17ml umif There is one complete differential unit for each amount bank 30, but as they are all identical in construction and operation only one will be described.

To drive the differential mechanism of the machine, a drive shaft 80 (Fig. 1) is provided with a plurality of pairs of cams S1 and 82, each pair cooperating with rollers 83, carried by a Y-shaped lever 84. Each of these levers 84 is pivoted on a corresponding subessee frame 85. Loosely mounted on a hollow stud 86 carried by the sub-frame 85 is a differentially movable member 87, carrying racks 88 and transfer arms 89 for totalizer pinions 90. The lever 84 at its upper end is connected by a link 91 to a driving segment 92 loose on the stud 86. The driving segment 92 is connected to the differentially movable member 87 by a latch 93, which is supported by a link 94 and a lever 95, pivoted on a radial extension of the corresponding differentially movable member 87. A spring 96 holds the rear end of the latch 93 in engagement with a shoulder on the driving segment When the segment is driven by its cams 81 and 82 the difierentially movable member 8'? first turns clockwise with its latch to a point where the forwardly extending arm of the lever 95 contacts the inner end of the corresponding depressed amount key 30. Such contact results in disengagement of the latch 93 from the driving segment 92 and engagement of the forward end of the latch with the particular one of a series of notches 97 formed on the in- Her edge of a locking bar 98 supported by the differentialsupporting sub-frame 85, which notch is opposite the latch when it is disengaged from its driving segment 92. Upon return movement of the driving segment to normal position, a pin 99 mounted on the dif ferentially movable member 87 is engaged by the inside of the driving segment 92, and member is thereby returned to its normal position. If a key is not depressed in an amount bank, the zero stop pawl therefor, operates the latch 93 and arrests the differentially movable member 87 in its Zero position. However, when a key is depressed, the zero stop pawl 35 is moved out of its operative position, as above described.

The differential. mechanism appropriate to the balance bank is shown in --l-. It is very similar to that for the amount banks, except for the fact that instead of the differential member 87 which carries the racks 88 and transfer arms 89, there is substituted a differentially movable member 110. This member is loosely mounted on a stud 8'6. The mechanism for driving the differentially movable arm or member 110 is identical with that shown for the amount bank and consists of the cams 81 and 82 fast on the drive shaft 80, which serve to rock the Y -shapcd member 8 1, connected by the link 91 to the driving segment- 92. The segment 92 is connected to the differentially movable member 110 by a latch 93, similar to the one previously described.

Totaliecr line.

As in most machines of this type, this machine is provided with three totalizer lines 111 (Fig. 1). The two lower lines carry the regular adding elementswhich are well known in these machines and which it is not thought necessary to describe herein. The upper to said talizer line car'riesthe adding and subtracting totalizer which is constructed in the same manner as that shown in the patent and application above mentioned.

As can be seen from Figs. 1 and 5, there are two totalizer wheels in the adding and subtracting totalizer appropriate to each denomination in the machine. These wheels comprise an adding wheel 112 and a subtracting wheel 113. Fast to the adjacent sides of each pair of wheels are bevel gears 11 1 and meshing with these bevel gears are two bevel pinions 115 carried by a short shaft 116 supported by the totalizer supporting rod 120. It is apparent that this construction causes the totalizer wheels 112 to turn in a direction opposite to that in which the totalizer wheels 113 turn.

Totalicer shifting mechanism.

by the machine side frames, as shown in the patent and application referred to. The arm 121 has a projecting socket 124 in which is astened a rod 125 carrying a roller 126. T his roller projects into a cam groove 127 formed in a cam 128 loosely mounted on a stud 129 projecting from the adjacent side frame 33.

This cam is rotated to different extents under control of the balance bank of keys, and it can be seen from Fig. 5 that during the movement of this cam, the roller 126, rod 125 and arm 121, which supports one end of the rod 120, and the adding and subtracting totalizer, is shifted from a position in which the subtracting pinions 113 of the totalizer are in cooperativerelation with the actuators 88,

to a position in which the adding pinions 112 are in such cooperative relation or vice versa.

The means for moving the cam 128' differentially will now be described. Integral with this cam is an arm130 to which is pivoted the lower end of a link 131 which at its upper end is fast on an arm 132 secured to one end of a shaft 133 (Figs. 5 and a supported by the side frames 33 of the machine. This train of mechanism is shown in elevation in Fig. 16 of the above-mentioned Fuller Patent, No. 1,242,170. Fast on the other end of the shaft 133 is a segment 13st to which is fastened the upper end of a link 135, (see also Fig. such as is well known in a machine of this class. At its lower end the link 135 is pivoted to an arm 136 loosely mounted on a rod 137 also supported by the machine side frames About midway of the link 135 is a roller 138 embraced by the bifurcated portion 139 of a beam 140, which at its opposite end is pivotcd to the differentially movable member 110 for the balance bank (Fig. 4).

It is apparent that when the differentially movable member 110 is diflerentially adjusted under the control of the keys 39 or 10 in the balance bank, the left hand end of the beam 15 will be also differentially adjusted therewith. During the operation of the machine, a roller 1411 carried by the Y-shaped member 8 1 comes into contact with the bottom edge of the beam 1-10 to shift the righthand end of this beam to a position corresponding with the position which the dillerentially movable member was arrested, and through the roller 133, moving the link 135 dill'erentially. This differential movement of: the link 135 adjusts the segment 134:, shaft 133, arm 132, (Fig. link 131, arm 130 and cam 128 in accordance with the position in which the latch 93 of the balance bank was disengaged from its driving segment 92 and through the cam, adjusts the adding and subtracting totalizer to either its adding or subtracting position.

The elements 133, 132, 131 and 128 of this application correspond to the elements 3&9, 3 18, 3&7 and 34A, shown in Fig. 16, 01 the Fuller patent above referred to. The cam race 127, Fig. 5, is formed with two relatively-oliset straight portions and a connecting cainming portion. The roller 126 is illustrated herein in the particular straight portion of the cam race which holds the subtraction wheels 113 in alignment with the actuators 38. V hen the cam is differentially positioned under control of any one of the keys 39, the cam 127 maintains the subtracting totalizer elements 113 in alignment with the actuators 83. Any one of the keys diil'erentially controls the cam 123 to cause the cam ming portion of the cam race 12? to shift the subtracting totalizer elements 113 out of alignment with the actuators 83 and the adding elements 112 into alignment therewith. There are two keys 39 and three keys 410 shown in the present application. These keys are illustrative only, as any number of adding or any number of subtracting keys can be used, and the shape of the cam race 12? termed accordingly. The number of" keys selected, in illustrating the invention here in, is the same as in the aboveanentioned copending Shipley application, Serial No. 636,- 564;, and reference may be had thereto for a typical system of control for the adding and subtracting totalizers. By referring to Fi 57 of the co-pending application, it will be seen that the keys corresponding to the keys 39 of the present application are designated Credit balance and Debit correction keys; and the keys are designated Credit correction, Forward balance, and Closing balance keys. Hence the operator when lists Credit balance or a Debit correction item presses the appropriate key 39, either of which selects the subtraction side of the totalizer. And when the operator comes to a Credit correction item, a Forward balance or a Closing balance, he presses the appropriate key 10 any of which selects the adding side of the totalizer. Obviously but two keys 39, 40 could be used, but it assists the operator to provide a series of keys bearing the various indicia appropriate to the amounts to be listed, thereby relieving him of the necessity of remembering that he must depress a thibtract key, for instance, when listing a Credit balance.

It can be seen that should the latch 93 of the balance bank be disengaged from its driving segment in either the zero, 1 or 2 positions, the cam 128 is not moved sufliciently to shift the adding and subtracting totalizer from the position shown in Fig. 5 so that when the latch 93 is disengaged in any of these positions, the totalizer remains in its subtracting position. If, however, the latch is disengaged in the fifth, seventh, eighth or ninth positions of the balance bank, the cam 128 shifts the adding and subtracting totalizer laterally to bring the adding wheels 112 into cooperative relation with the actuators 85. The axial shitting movementof the totalizer takes place during the period that the differentially movable member 110 passes from the 2 to the 5 position or Vice versa.

Totalieer engaging mechanism.

Means is, of course, provided for engaging the totalizers on the three totalizer lines with the actuators after the lines have been adjusted to select the desired totalizer for op eration. However, as the engaging mechanism has nothing whatever to do with the present invention, it is neither shown nor described in this application. Reference can be made to the above mentioned patent and application if any description of the engaging mechanism is desired.

Total printing operation.

In order to take a total from any of the totalizers in the present machine, mechanism is provided which changes the time of enga gement of the selected totalizer with the actuators, so that it is moved into engagen'ient with the actuators at the beginning of an operation. The totalizer wheels are then turned backwards as the actuators are operated, until they reach their zero positions, whenthe latches 93 are automatically disengaged from the respective driving segments 92 in a manner which is well known in the art and which will not be described herein. After the totalizer wheels are returned to zero they are disengaged from the actuators thereby leaving them in the zero po ition. lit a snb total is to be taken this 91' ment does not take place until the actuators are returned to Zero thereby restoring to the totalizer wheels the amount taken therefrom, as is well known in machines of this type. This turn-to-zero IIlOVQlIlQIlt applies to the adding and subtracting totalizerwheels 11 2, 113, as well as to the ordinary adding totalizers 90, and either theadding wheels 112 of this totalizer or the subtracting wheels 113 thereof may be positioned to cooperate with the actuators 87.88 to be set to zero. Of course, usually, the adding wheels are the ones selected, as in most cases, the balance on the adding and subtracting totaliaer is a positive one. There are instances, however,

where the balance on this totalizer is a negative one, such a condition being produced by the subtraction of a greater amountfrom a lesser. to. print a total of the amount on the negative wheels 113, these wheels are positioned to cooperate with the actuators 87.88 and the operation is carried out as usual. It is apparent that when the negative wheels of the adding and subtracting totaliZer are set to zero, the positive wheels 112 thereof are turned to nine, as the settings on the two groups of wheels are always complementary to each other. If, after such an operation has taken place, the machine is operated to add an amount on the adding side of the totalizer, it is evident that a wrong result would be had, and therefore, mechanism is provided to prevent the adjustment of the machine to an adding condition until the adding side of the adding and subtracting totalizer has been in turn reset to zero. This mechanism will now be described.

Total Zeoer.

totalizer line which is to be rocked into engagement with-the actuators, through the provision of three positions of adjustment thereof. The first positionof adjustment below the adding position is the position in which the upper or adding and subtracting totalizer line is selected for operation, and it is this position, therefore, with which the present application deals.

The movement of the total lever plate 151 accomplishes various functions before the operation of the machine begins. One of these functions is to lock out the amount keys 30, and set up a condition to rock out all of the zero stop pawls 35, as it is not desired that these pawls should be effective on the second cycle of the total printing operation. The

lVhen this occurs, and it isdesired I on this stud is alink 157 connected to the lever 155 by a slot and pin connection for limited relative movement. It is evident that when the total lever 151 is moved out of its normal adding position in which it is shown in Fig. 6, in either direction, the lever 155 is rocked counter-clockwise. This movement is communicated to the link 157 througli a spring 158 to rock the link also in a counter-clockwise direction. The spring 158 is interposed be-' tween one arm of the lever 155 and the link 157, its ends being-supported on opposed errtensionsfprojecting from the arm of the lever and from the link, respectively, the spring tending to hold the lever and link separated as far as the pin and slot connection permits. The link 157 has a cam slot 159 formed therein, with which a roller 160, carried by an arm 161 fast on a shaft 162 cooperates. A counterclockwise movement of the link 157 rocks the arm 161 and shaft 162 in a clockwise direction. Shaft 162 extends across the entire machine and a portion of the shaft in front of the banks of amount keys (Fig. 1) carries a plurality of arms 163, which in turn, carry a bail 164. Bail 164; normally lies out of the paths of the hooked links 37, and ust above a plurality of fingers 165 which are fast on the short shafts 36 which support the zero stop pawls for the various amount banks. It is evident that when the shaft 162 is rocked clockwise by the manual adjustment of the totallever 150 in counter-clockwise direction, the bail 164 shifts into the paths of the hooked links 37 to prevent operation thereof, and of the detent bars 34 and thus prevent depression of the amount keys 30.

Also the manual adjustmentof the shaft 162 by the total lever 150 and total plate 151, causes the shaft 162 to set mechanism (not herein shown, but disclosed in the patent and in the application before referred to) which last-named mechanism is driven by the machine as it completes its first cycle in total taking operations, to rock the shaft 162 farther in clockwise direction and thereby rock the bail. 16 1 in the same direction to contact with all of the fingers 165 and rock the fingers, the shafts 86 and thezero stop pawls 85, counter-clock wise to their ineffective positions, just prior to the second cycle of a total printing operation. The mechanism appropriate to the first transaction bank or balance bank (Fig. 1) is slightly different. The shaft 162carries an arm 166 in line with this bank of keys which normally lies just above the pin 167 carried by a short arm 168 fast on the-shaft 36 for this bank. The clockwise movement of the shaft 162 by the manual operation of the total lever 150 rocks the arm 166 against the pin 1G7 and, through the arm 168, rocks the shaft 36 and the zero stop pawl for the first transa-ctlon banks to its ineffective position.

Total lever locking mechanism Fig. 7 shows the mechanism of the present invention in the position which it occupies when the total lever is in its normal adding position. hen the total lever 150 is moved to the first position below its adding position to select the adding and substracting' totalizer for operation, by mechanism shown in the patent and application referred to, the parts assume the positions shown in Fig. 8. The mechanism for locking the total lever 150 in the first position below its adding position, when a total has been printed from the negative side of the adding and substracting totalizer includes a locking lever 175 pivoted on a member 17 6 mounted on the rod 137 and supported by another rod 177. This locking lever 175 normally tends to rock in a counter-clockwise direction under the influence of a spring 178 which is stretched between a pin on the lever and a pin on a projecting arm 179 of the member 176. The upper arm of the locking lever 175 has a shoulder 180 cut therein to cooperate with the pin 154 carried by an arm of the multiple-armed lever 155 above 1nentioned. The lower arm of the locking lever 175 carries a roller 181 to cooperate with the periphery of a disc 182 loose on the rod 137, but pinned to the differentially adjustable arm 136 previously mentioned. This disc is recessed, as at 183, with which recess the roller 181 is adapted to cooperate. The recess is preferably made long enough to correspond to the first and second key positions, that is, to the positions to which the diiferential mechanism is adjusted when either of the two subtraction keys 39 is depressed and the machine operated.

lVhen the total lever 150 is in the adding position, as seen in Figures 6 and 7, the spring); 178 holds the upper arm of the locking lever 175 against roller 154 mounted in the lever 155 with the shoulder 180 ineffective.

Normally, the recess 183 of the disk 182 lies opposite the roller or stud 181 on the lower arm of the spring-drawn locking lever 175, and depression of either of the subtraction keys 89 followed by an operation of the machine will cause the differential mechanism to adjust the disk 182 in clockwise direction, but as stated the length of the recess 183 is such that it will still lie opposite the projection 181 on the lower arm of locking lever 17 5. It is only when some one of the adding keys 4-0 is depressed and the machine operated, that the disk 182 will be ditl'eren ally adjusted to position an unmutilated part of the periphery of the disk 182 opposite the projection 181 on the locking" lever 175.

In this latter event, the disk will retain the locking lever 17 5 ineffective, in totaling operations when the total plate 151 is rocked.

It is apparent that when the lever 155 is rocked counter clockwise by the walls of the slot 153 in the total lever plate 151, when the total lever is operated, the locking lever 175 is rocked counter-clockwise to the position shown in Fig. 8, it the recess 183 o't' disc 182 is in position to receive the roller 181. lVhen the disk permits the latch 115 to rock to the position shown in Fig. 8 the shouldered upper end 180 of the locking lever 175 snaps beneath the roller 154 on lever 155, and so long as the parts remain in this position, the lever 155 and the total lever plate 151 cannot be re turned to their normal adding positions. The control of the lockin device is, therefore, found in the disc 182. This disc is adjusted diflerentially in accordance with the adjustment of the differentially movable member 110 for the balance bank, as shown in 41-. In Figs. 1 {111K 7, the disc is shown in its zero position. In this position it is evident that the locking lever 175 cannot be effective. It, however, the total lever 150 is moved to its first position below its adding; position, and one of the keys 39, in the first or second positions in the balance bank is depressed, the latch 93 for the balance bank will be disengaged from its driving segment. 92 in either the first or second position, and therefore, the disc 182 will be so positioned that the recess 183 thereol lies beneath the roller 181 on the lockinglever 17 This lever is, there fore, free to move to its locking position under the influence of the spring 178. lVith the total lever moved to its first position below adding and one of the keys 39 depressed, the subtracting side of the adding and subtracting counter will be selected for operation, and therefore, the negative balance thereon will be p inted. It is evident that after such an operation has taken place it is impossible to move the total lever 150 to its normal adding position until the locking lever 175 has been disabled.

The manner in which the total lever can be freed so that adding operations of the machine can be resumed will now be described. This is aceomplished by depressing the motor bar 56 and giving; the machine a single blank operation of two cycles while the total lever remains in its adjusted position.

The locking lever 175, when effective, lies in the path of the roller 154k on lever 155, which roller also traverses the cam slot 153 in the total plate 151.

Normally the roller 154- lies at the apex of the node in the cam slot, but when the total plate 151 is adjusted, it shifts the node away from the roller and rocks the lever carrying the. roller 15 1.

And with the disk 182 positioned so that illi the roller 181 on locking lever 175 drops into the recess 183 in the disk, the locking lever 175 will snap behind the roller 154 on the lever 155 to hold it in its rocked position.

By looking the lever 155 against rocking to its normal position, the locking lever 175 locks the total plate 151 against restoration.

The total plate 151, when adjusted to any position other than its adding position, operates through the linkage heretofore set forth, to locate the bail 164 (Fig. 1) so that it will disable the zero stop pawls 35, at the end of the first cycle of the totaling operation, and of course, if the total plate 151 is locked against restoration to its adding posit-ion, the bail 164 is held in its adjusted position ready to disable the zero pawls 35 at each complete totaling operation of the machine. first cycle of a total taking ope ation, the zero stop pawl 35 for the balance bank will be in its ineffective position, as the total lever 159 is out of its adding position, and therefore, the differentially movable member is not arrested at the zero position but continues to turn clockwise. As there are no keys depressed in the transaction bank, (Fig. 4) a special mechanism is provided which disengages the latch 93 of this bank in the 5 position, which position corresponds to the lowermost key 40, to select the adding side of the adding and subtracting totalizer for operation. This occurs during the first cycle of a total taking operation.

During the first cycle of such operation also, the zero stop pawls 35 for the amount banks arrest the denominational actuators 88 in their zero positions, but on the second cycle of the total taking operation, the totalizer selected during the first cycle is shifted into engagement with the actuators, after which the actuators advance, and because of the displacement of the zero stop pawls 35 by the bail 164, the actuators 88 continue to ad- Vance under control of the selected totalizer, until arrested by the long teeth of the totalizer wheels in the usual manner, fully disclosed in the Fuller patent heretofore mentioned. Hence the operation of the actuators 88 returns the adding wheels 112 to zero. The automatic latch disengaging mechanism includes an elbow lever 190 (Fig. 4) loosely mounted on the stud 86 for the balance bank. One arm of the elbow lever 190 has a slot 191 cut therein, through which projects a pin 192 carried by the forwardly extending arm of the bell crank lever 95 which supports the latch 93 for this bank. The upper end 193 of the elbow lever 190 is adapted to cooperate under certain conditions with a pin 194 carried by an arm 195 loose on a cross rod 196. The pin 194 is normally held out of the path of the end 193 of the lever 190, by a triangular abutment 197, which is riveted to the side of the total lever plate 151. The arm 195 normally tends On the i to rock in a counter-clockwise direction due to a spring 198 stretched between a pin on the arm 195 and any suitable part of the mechanism. It can be seen that whenever the total lever is moved either up or down out of its normal adding position, the abutment 197 is removed from beneath the pin 194 and the spring 198 will then rock the arm 195 counter-clockwise until the pin 194 rests against the differential supporting frame 85 for the balance bank. Then the arm 195 is in this position and the machine is operated, the differentially movable member 110 will move clockwise until the end 193 of elbow lever 190 strikes the pin 194 to arrest the differential member 110.. The bell c ank lever 95 is then rocked counter-clockwise, due to its slot and pin connection with the elbow lever 190, and the latch 93 is disengaged from the shoulder of the driving segment 92.

The automatic disengagement of the latch 93 of the balance bank in. the fifth position as just above d [scribed causes the adding side of the adding and subtracting totaliaor to be moved to operative position and rotates the disk 182 to shift the lever 17 5 out of contact with the stud 154. The actuators 88 after the engagement of the adding wheels 112 therewith, reversely rotates the addingwheels from their 9 positions (in which they were left when the negative total was taken from the subtracting wheels 11: and resets the adding wheels to zero.

The cont-rolling disk 182 also displaces the locking lever 17 5 tov release the total key lever 150, which may then be restored manually or otherwise to its adding position, whereupon themachine is cleared and in readiness for a. new series of operations.

lVhen the total lever 159 is shifted to the first upper, or Read position, and the ma chine is operated with a key 39 depressed, the negative total is printed, but the amount is again added on the totalizer, in a manner well known in the art. During this operation, the disk 182 is positioned in the same manner as during reset operations, and the locking lever holds the total lever 159 against restoration to its adding position in exactly the same manner as during Reset operations. Before the total lever 150 can be returned from the first Read position to its adding posi tion, it is necessary to make a blank operation, just as during Reset operations, by depressing the motor bar, but no control key. During this operation, the amount on the positive side of the totalizer is printed, but the totalizer is not reset to zero. This blank operation after a Read operation performs no particular function, other than to unlock the total lever, but it a necessary incident to the construction disclosed herein. 1

As shown in Fig. 9, two removable key locks are provided, the upper lock preventing movement of the total lever 150 into any of the Read positions, and the lower lock preventing movement into any of the Reset positions, except that corresponding to the balance bank. These locks are under control of the proprietor or other authorized person, and the operator can move the total lever, only into the adding and the balance reset positions. Those locks in combination with the total lever locking mechanism shown in Figs. 6, 7 and 8, constitute means compelling the clearing oi the adding wheels after a negative total has been printed.

Operation.

A brief description of the operation of the machine will now be given. The amounts to be added, or subtracted, are set up on the keyboard in the manner set forth in the abovementioned patent and application. It a total is to be taken from the adding and subtracting totalizer 112.113, the total lever 150 is set to either the first position below add position, to condition the ma -hine tor a Reset operation, or to the first posit-ion above the add position, to condition the machine for a Read operation, and the proper key 39 or 40 is depressed. It a negative total is desired, the proper key 39 is depressed, and the machine is released for operation. During the operation of the machine, the disk 182 is positioned, under control oi the key so to permit the locking lever 175 to engage the stud 154, and prevent shifting the total lever 150 back to the add position. At the end of this operation, all the positive totalizer elements 112 are standing at nine, and before the total lever can be shifted to permit an amount to be added thereon, it is necessary to make a blank operation, during which the positive totalizer wheels 112 are automatically rest to zero and the locking lever 175 is shifted out of contact with the stud 154 to permit the total lever to be shifted back to its add position.

\Vhen the machine is operated, with the total. lever in the first upper, or Read, position. and a. key 39 is depressed, the total lever is locked at the end of the operation of the machine. However, this locking of the total lever during Read operations has no :tunction, but is a condition which is inherent in the present embodiment of the invention. Therefore, it is necessary to make a blank Read operation, after reading the negative total, but inasmuch as the positive wheels 1.12 are not reset to zero during Read operations, the proper total is still standing on the totalizer after such an opera.- tion, and the total lever is released in the same manner as during the blank operation after a Reset operation.

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.

hat is claimed is 1. In a machine of the class described, the combination of a total lever having an adding position and a plurality of total-taking positions, and automatic means for locking said total lever against a return movement to adding position after a certain total-taking ing operation.

2. In a machine of the class described, the combination of a total lever having an adding position and a plurality of total-taking positions, an adding and subtracting totalizer under control of said total lever, means for taking a negative total from said totalizer, and automatic means for preventing the return oi the total. lever to its adding position atter such a. total has been. taken.

3. In a machine of the class described, the combination or a total lever having an adding position and a plurality of total-taking positions, an adding and subtracting totalizer under control of said total lever, said totalizer having a series of adding elements and. a series of subtracting elements, means for taking a total. from said subtracting elements, and means to enforce the return of the totalizcr to a position in which the adding elements will be operated.

l. In a machine 01 the class described, the combination of a total lever having an adding position and a plurality of total-taking positions, an adding and subtracting totalizer under control 01 said total lever, said totalizer having a series of adding elements and a series of subtracting elements, means for taking a total from said subtracting elements. and means to enforce the return to zero of the adding elements following the taking of a total from the subtracting elements.

5. In a machine of the class described, the combination of a total lever having an adding position and a totaltaking position, :1. pl ate integral with said lever having a slot cut therein, a pin projecting through said slot, an arm carrying said pin, and a member adapted to cooperate with said pin to prevent the return of said total ever from total-taking to adding position after certain operations of the machine.

6. In a machine oi the class described, the combination with an adding and subtracting totalizer; of a total lever having an adding position and a total-taking position, a plate integral with said lever having a slot cut therein, a pin projecting through said slot, an arm carrying said. pin, a locking member adapted to assume a position beneath said pin on certain total-taking operations of the machine in order to prevent the return of the total lever to its adding position, and means to prevent the movement of said locking member on other total taking operations.

7 In a machine of the class described, the combination of a total lever having an adding position and a total-taking position, a plate integral with said lever having a slot cut therein, a pin projecting through said slot, an arm carrying said pin, a locking member adapted to assume a position beneath said pin on certain total-taking operations of the machine in order to prevent the return of the total. lever to its adding position, and a disk cooperating with said locking member and adapted to control the position thereof.

8. In a machine of the class described, the combination of a total lever having an adding position and a total-taking position, a plate integral with said lever having a slot out therein, a pin projecting through said slot, an arm carrying said pin, a locking member adapted to assume a position beneath said pin on certain total-taking operations of the machine in order to prevent the return of the total lever to its adding position, a disk cooperating with said locking member, and diflerential means for positioning said disk.

9. In a machine of the class described, the combination of a total lever having an adding position and a total-taking position, a plate integral with said lever having a slot cut therein, a pin projecting through said slot, an arm carrying said pin, a locking member adapted to assume a position beneath said pin on certain total-taking operations of the ma chine in order to prevent the return of the to tal lever to its adding position, a notched disk cooperating with said locking member, differential means for positioning said disk, and a bank of keys for controlling said differcntial means.

10. In a machine of the class described, the combination of an adding and subtracting totalizer comprising adding and subtracting wheels, means for entering amounts therein, means to clear the subtracting wheels, and means to prevent entry of an amount in the adding wheels during an operation immediately following an operation in which the subtracting wheels are cleared. I

11. In a machine of the class described, the combination of an adding and subtracting totalizer, adding totalizers, means for entering amounts additively and subtractively on the adding and subtracting totalizer, and additively on the adding totalizers, means to take the positive and negative totals on the adding and subtracting totalizer, and totals on the adding totalizer, and means for preventing the entry of items on any totalizer during an operation immediately following a negative total taking operation.

12. In a machine of the class described, the combination of an adding and subtracting to talizer, differentials for entering amounts additively and subtractively in said totalizer,

means for controlling said differentials and the totalizcr to take the negative total on said totalizer, means under control of one of said differentials to prevent an item entering operation immediately following a negative total taking operation, means for releasing the machine for operation, and means positioned under control of said total taking controlling means for controlling said last-v combination with a plurality of sets of totalizers; actuators therefor; means to select any set of totalizers for operation by their actuators; and a total lever having a normal position and a total taking position; of a locking lever adapted to latch the total lever in one of its adjusted positions; and controlling means set by the totalizer-selecting means to determine the effectiveness of the locking lever.

15. In a machine of the class described, the combination with a plurality of sets of totalizers; actuators therefor; means to select any set of totalizers for operation by their actuators; and a totallever having a normal position and a total taking position; of a locking lever adapted to latch the total lever in one of its adjusted positions; controlling means set by the totalizenselecting means to determine the effectiveness of the locking lever; and automatic totalizer-selecting means to adjust the controlling means upon a blank operation of the machine, to disable the locking lever.

16. In a machine of the class described, the combination with a total lever adjustable to a plurality of positions; of a locking member to latch the total lever against restoration when the lever is shifted to a predetermined one of its positions; an adjustable release means for the locking lever; and means to position the release means.

17. In a machine of the class described, the combination with a total lever adjustable to a plurality of positions; of a locking member to latch the total lever against restoration when the lever is shifted to a predetermined one of its positions; an adjustable disk to control the effectiveness of the locking lever; and difi'erential means to position the disk. 1

18. In a machine of the class described, the combination with a total lever adjustable to a plurality of positions; ofa locking means for the total lever when the latter is shifted to one of its adjusted positions; a look controlling means adjustable to a plurality of positions; and manipulative devices to determine the position to Which the lock-contr01- ling means shall be adjusted.

19. In a machine of the class described, the combination With an adjustable total lever; of a locking means to lock the lever in one of its positions; adjustable lock control means to determine the etl'ectiveness oil the locking means; manipulative devices to deter mine the position of the look control means; and means operable automatically upon a blank operation of the machine to adjust the lock control means to disable the locking means.

In testimony whereof I aflix my signature.

BERNIS M. SHIPL EV

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