US1874164A - Total - Google Patents

Description

Aug. 30, 1932. 5. BRAND cA sH REGISTER Original Filed Sept. 8. 1927 4 Sheets-Sheet l 4 Sheets-Sheet 2 D A m L L TS O 0 MA UWA EKM 2 ET SAT SRO T EE F L IT RTT RC gwmmkw Samuel Brand Hisakom Aug; 30, 1932. 5, BRAND 1,874,164

CASH REGISTER Original Fi1ed Sept. 8, 192' 4 Sheets-Sheet 3 awwmloc Samml Band '5. BRAND CASH REGISTER Original Filed Sept. 8, 1927 4 Sheets-Sheet 4 amnion Samuel Brand SAMUEL BRAND, OF DAYTON, OHIO, ASSIG Patented Aug. 30, 1932 UNITED STATES PATENT OFFICE COMPANY, OF DAYTON, OHIO,

NOR TO THE NATIONAL CASH REGISTER A CORPORATION OF MARYLAND CASH REGISTER Original application filed September 8, 1927, Serial No. 218,200. Divided and this application filed February 7, 1931. Serial No. 514,135.

This invention relates to locking mechanism and includes interlocks between different groups of a divided bank of keys, mechanism operable bya total-taking device for coupling the interlocks together and locking means for preventin machine release except under certain conditlons, of a machine of the type shown and described in the co-pending application of Samuel Brand, Serial No. 218,200, filed September 8, 1927, of which the present application is a division.

An object of this invention is to provide mechanism for enforcing the depression of a key in each group of a divided bank of keys before the machine can be released for operation.

Another object is to provide a novel device controlled by the total lever for connecting the controlling bars of the divided bank,

whereby both bars will be moved upon depression of a key in either group to release the machine.

With these and incidental objects in view, the invention includes certain novel features of construction and combinations 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 the drawings which accom T pany and form a part of this specification.

Of said drawings:

Fig. 1 illustrates the main anism of the machine. m

Fig. 2 is a detail of the machine release mechanism.

Fig. 3 shows the item key bank and its connection to the clutch release mechanism.

Fig. 4 is a detail of the clutch arm restoring device.

Fig. 5 is a front view of a portion of the machine release mechanism associated with the divided bank.

Fig. 6 is a section taken alongside the divided bank with the differential mechanism for the upper group of keys omitted.

Fig. 7 shows particularly the divided bank controlling bars and how they cooperate to release the machine for operation. It also operating mechshows the interlock between the total lever and this bank of keys.

Fig. 8 is a detail of the coupling device for the controlling bars of the divided bank.

Fig. 9 shows the two flexible detents of the ivided bank and a portion of the lock out mechanism.

Fig. 10 is a fragmentary detail view showing the manual releasing means for the up per group of keys of the divided bank.

11 is a fragmentary detail view showing the manual releasing means for the lower group of keys of the divided bank.

Fig. 12 is a diagrammatic view of the keys of the divided ban General description The mechanisms constituting this divisional application are for the purpose of compelling the depression of a key in each group of a divided key bank before the machine can be released for operation, and in cludes a controlling bar for each group of keys arranged to block the releasing mechanism until removed by the depression of a key in the group controlled by said bar.

Under certain conditions to be later described, it is desirable that the depression of a key in either group in the divided bank shall condition the machine for operation. To effect this, the total lever is arranged to couple the two controlling bars of the different groups of keys together when said lever is moved to certain positions.

To control the selection of the totalizers on the front and back totalizer lines there is a bank of keys known inthe art as a divided bank, consisting in this particular case, of four clerks keys and five transaction keys. Each of these groups of keys controls a differential mechanism used to select totalizers, indicators and printing mechanism.

During a single-item operation, in order to release the machine for operation, it is necessary to depress one of the clerks? keys and one of the transaction keys in the divided bank, and then operate the motor bar. As hereinafter explained, the keys in the di-' vided bank are not released automatically lUU near the end of each operation of the machine, if a succeeding transaction is identical with a preceding one and the same clerk is making the entry, it will be unnecessary to depress any keys in the dividedbank.

Theclerks keys and transaction keys are 7 what are known in the art as flexible staydown keys, and are not released by the machine at the end of any operation. I The de pression of one clerks key releases another clerks key, and the depression of one transaction key releases another transaction key. There is also provided a manually operated lever to release both clerks and transactibn keys when it is so desired.

During a multipledtem operation it is necessary to depress the item key, one of the clerkskeys, and one of the transaction keys, after whichthe motor bar must be operated. During,multiple-item transactions the item key is retained in a depressed position until the total of these items has beenobtained.

To'obtain thetotal of the items, the total lever is moved to the item-total position,

'which is the first position below the adding position. During this item-total operation the item key ispermitted to return to nor mal position, thus putting the machine in condition to be operated again, either for another multiple-item transaction, or a single-item transaction. After the entry of single-item transactions it is not necessary to make'any totalizing operation. I

Operating mechanism Themotor used to operate applicants machine is of the well known type illustrated and described in Letters-Patent of the United States, No. 1,144,418, granted to CharlesF. Kettering and William A. Chryst on June 29, 1915. For a detailed description of the same, reference may be had to this patent. Only apart of the motor clutch mechanism is shown in this case; v

Mounted on a stud 40 (Fig. 3) is a spring actuated clutch disk 41 carrying a block 42 normally contacting a lever 43, pivoted on stud 44, mounted in the machine frame.

Integral withthe .lever 43 is an arm46 carrying a pin 47 contacting a stop arm 48 pivoted on the regular printer driving shaft, 49. The pin47 is held in contact with the. arm 48 by a spring 50. p 1

' Secured to the regular motor clutch (not shown) is a driving gear 52 meshing with the gear 53 mounted on a stud 54 on the machine frame. Securedto the gear 53is a gear 55meshing with a gear 56 secured to a main. cam shaft 57. The gear 55 also meshes with a gear 58 fastened to the shaft 49.

Upon release of the lever 43 from the block 42,'the gear 52 through the motor clutch (not shown); rotates the shafts 49 and 57 (once) for each adding operation of the machine.

Pivoted to an extension of the stop arm 48 .is a link 62 pivoted to an arm 63 secured to ashaft 64 mounted in the frames 60 and 61.

When the shaft 64 is rocked clockwise to release the machine, as will be hereinafter described, the stop arm 48 is withdrawn from beneath the pin'47,-thus permitting the spring 50 to'withdraw the lever 43 from the block 42. Clockwise movement of the lever 43 and arm 46 is limited by a pin 66 (Fig. 3) mounted in the machine frame.

Upon release of the lever 43 the clutch disk 41 is'moved clockwise by a spring (not shown) causing an effective connection between the motor and this disk 41 to operate the machine through the gear 52.

, Near the end'of the operation the lever 43 is restored to normal position by a pin 67 (Fig. 4) on a disk 68 secured to the shaft 49. This pin 67. at the proper time engages an edge 69 of the arm 46, thus rocking this arm and the lever 43 counter-clockwiseto move the lower end of the lever 43 into the path of the block 42 on the. clutch disk 41 to stop the machine.

Means are also provided for operating the machine by hand instead of by motor.

Pivoted on a stud 70 (Fig. 1) on the frame 61 is a handle operated gear 71 meshing with a gear 72 pivoted on a stud 7 3. The gear 72 meshes with a gear 74, secured to the shaft '57. The ratio of the gears 71, 72 and 74 is such that two clockwise rotations of the gear. 71 rotates the gear 7 2 a halfturn and the gear 74 and shaft 57 a full turn.

Machine release during item entering opemzons After thedesired amount, clerks and transaction keys have been depressed for a single item transaction, and in addition, the item key for a multiple-item transaction, the machine is finally released for operation bythe depression of a motor barSO (Figs. 1 and 2). This bar is detachably mounted on studs81 on a slide 82 supported and guided by studs 83 on the frame 61. The-bar 80 is retained in its normal or outer position by a spring 84. A pin 85 on the slide 82 is engaged by a forked arm 86 pivoted on the stud 70. The arm 86 is connected by a link 87 to a bell crank 88 pivoted on a shaft 89 supported by the frames 60 and 61.

The upper arm'of the bell crank 88 lies in having a stud 92 projecting into a slot 93 in a d link 94. The stud 92 carries two spring pilots 95 (only one shown).which,' in conagain engages the projection 111, they having junction with a tongue 97 of the link'94, guide a compression spring 96.

- Depression of the motor bar 80 (Fig. 2) through the arm 86 and link 87 moves the 7 bell crank 88 from-in front of the pin 90.

The spring 96 (Fig. 1) then rocks the arm 79 and shaft 64 clockwise, which, through the arm 63 and link 62, (Fig. 3), removes the stop arm 48 from the pin 47, and the spring rocks the lever 43 to release the motor clutch disk 41 so that the driving gear 52 can function to operate the machine.

Near the end of the operation the shaft 64 is rocked counter-clockwise beyond normal position by the link 94, which is lowered to cause the upper end of the slot 93 in the link 94 to strike the stud 92. This movement of the shaft 64 beyond its normal position is for the purpose of releasing the depressed amount keys, so that said keys may be restored to normal positions by the usual key springs (not shown). Thereafter the link 94 is again raised, which latter movement permits the shaft 64 to return to normal position by the action of the spring 96. The link 94 also has an opening 98 (Fig. 1) having an offset into which projects a pin 99 on a lever 100 pivoted on a stud 101 on the frame 61. The lever 100 has a roller 102 cooperating with a cam 103 in the gear 72, and this cam 103 rocks the lever 100 clockwise to lower and raise the link 94 as above described.

Since this gear 72 makes a half rotation only, during adding operations, there are two cams 103 either of which rocks the lever 100 for the purposes above mentioned.

To prevent repeat operations when the motor bar is held depressed during the entire op eration, there is provided a non-repeat pawl 110 (Fig. 2) held against a projection 111 on the bell crank 88 by a spring 112. When the shaft 64 is moved counter-clockwise past its normal position shown in Fig. 1, the spring 112'rocks the non-repeat pawl 110 so that it been separated when the machine was released as the pin 90 moved between the bell crank 88 and the lever 110. This rocking of the non-repeat pawl 110 positions it in front of the pin 90, thus preventing any clockwise movement of the shaft 64 which movement is necessary to release the machine for operation. When pressure is removed from the motor bar 80 the spring 84 returns the bell crank 88 and non-repeat pawl 110 to the position shown in Fig. 2.

Key board The keyboard includes one item key 116, four banks of amount keys (not shown), a divided bank of keys comprising four clerks keys 118 and five transaction keys 119, and a total lever 120 (Figs. 3, 7 and 12).

Keyboard item key The item key 116 is carried in a frame 121 (Fig. 3) mounted on a rod 122 supported by the frames and 61, and a rod 123 supported by the frame 60 and the printer frame (not shown). The key 116 has a pin 124 which cooperates with a detent 125 mounted on screw studs 126 on the frame 121. A spring 127 holds the detent 125 normally in contact with the pin 124. Depression of the key moves the detent 125 to the right until the key is fully depressed, whereupon the spring 127 moves the detent to the left and a shoulder 128 of the detent 125 holds the key depressed.

This key 116 must be either fully depressed or fully released before the machine can be released for operation. Therefore, the arm 63 has a projection 129 (Fig. 3) which cooperates with a projection 130 on the detent 125. When the key 116 is either fully released or fully depressed, the projection 129 will pass the projection 130 as the shaft 64 is rocked clockwise upon the release of the machine. However, should the key 116 be in a partially depressed position, the projection 130 would then overlie the projection 129, thus preventing any movement of the shaft 64 and consequently prevent the release of the machine.

This key 116 is depressed at the beginning of a multiple-item transaction only. For each item sold of a multiple-item transaction, the shaft 57 is rotated once and the machine goes through an operation. At the end of these various operations of a multiple-item transaction, the key 116 is not released, but is held depressed until the item total of the several items is taken. During such item total operation, a device fully shown and described in the parent case, operating on the stud 131 shifts the detent 1.25 to release the key 116.

Keyb0crrclclioided bank The divided bank includes two groups of keys 118 and 119, (Figs. 6 and 12), carried by a. frame 170 supported on the rods 122 and 151.

Each key 118 has on its left-hand side a pin 171 (Fig. 9) which cooperates with a detent 172 supported by arms 173 and 174 (Fig. 10) pivoted upon studs 175 and 176, respectively, mounted in the frame 170 (Fig. 6). A spring 177 (Fig. 9) normally holds shoulders 178 on the detent 172 in contact with the pins 171.

Each key 119 has on its left side a pin 181 cooperating with a detent 182 supported by arms 183 and 184 pivoted on the studs 175 and 176 respectively. A spring 187 normally holds shoulders 188 on the detent 182 in contact with the pins 181.

' lVhen a key 118' is depressed, its pin 171 ll 3 pressed, its pin 181 moves the detent 182 downwardly until the pin 181 gets underneath the shoulder 188, whereupon the spring 187 raises this detent and retains this key 119 in depressed position.

To prevent clockwise movement of the shaft 64 9) to release the machine for operation when any one of the keys 118 or 119 is partially depressed, each arm 17 3'and 183 has a laterally turned lug 190 (F igs- 5, 9

e and 10) which cooperates with fingers 191 on an arm 192 fastened to the shaft 6 1. When either of the keys 118 or 119 is partially depressed its respective lug 190 is in the path of movement of the fingers 191, thus preventing any movement of the shaft 6% to release the machine. When the keys are either fully-depressed or fully released, the fingers 191 pass in front of the lugs 190.

The keys 118 and 119, as abovedescribed, are of the stay down type, that is, they are iot released at the end of the operation of the machine, as is the case with the amount keys. However, depression of another key 118 forces the detent 117 downwardly and withdraws the shoulder 178 from above the stud 171 to release the depressed key 118, so that i there is never more thanone key118 depressed for any operation of the machine. Likewise, depression of any key 119 forces the detent 182 downwardly to release any key 119 which may be depressed, so that there is never more than one key'119 depressed for any one operation of the machine.

There is provided, to release the clerks keys 118 an transaction keys 119, a manually operable release lever 193 (F i gs.10 and 11) pivoted upon. the shaft '64. 'Thisolever is connected by a yoke 194. an arm 195 carryin a pin 196 which overlies both arms 173 and 183. r

Counter-clockwise movement of the lever 193 (Figs. 10and 11) rocks the arms 173 and 183 clockwise, which disengages the shoulders 178 and 188 from the pins 171 and 181, respectively, thus permitting the regular key springs (not shown) to restore any depressed keys.

Omit rolling bars for divided bank 204E (Figs. 6 and 7) which cooperates with a controlling bar 205 supported by arms 206 and 207 pivoted on the studs 175 and 176'.

The bar 201 has a pr0jection 208 (Fig. 7)

normally held against the pin 20% in the lowermost key 119 by a spring 209. The bar 205 has a projection 210 held against the same pin 204E by aspring 211. p

To enter a multiple-item or a single-item transaction it is necessary todepress a clerks key 118 and a transaction key 119. p

The shaft 64 has secured thereto a retaining arm 215 (Fig.7) having on one side a pin 216 and on the other sidea pin 217.

The arm 202 (Figs. 5 and 7) for the clerks bar 201 has a projection 218 lying in the path of movement of the pin 216' The arm 206 (Figs. 5 and 6) for the transaction bar 205 has a projection 219 also lying in the path of movement ofthe pin 216. There is a slight clearance between the pin 216 and each of these projections 218 and 219. The pivot pin 220 (Figs. 5 and 7 for the arm 202 and bar 201 is normally engaged by an arm 221 loosely mounted upon the shaft 89. This arm 221 has a. projecting arm 223 normally contacting the pin 217. A spring 22 l holds the arm 221 in engagement with the pin 220 and keeps the arm 223 in front of the pin 217.

The pivot pin 225 (Figs. 5 and 6) for'the arm 206 and transaction bar 205 is engaged by an arm 226 loosely mounted upon the shaft 89. This arm is connected by a yoke 227 to an arm 228 normally in front of the pm 217. A spring 229 holds the arm 226 in engagement with the pin 225 and the arm 228 in front of the pin 217.

Should a clerks key-118 be depressed and none ofthetransaction keys 119 be depressed, the pro ectlon 219 and arm 228 would remain in front of the pins 216 and 217 respectively.

thus preventing any movement of the retaining arm 215 and shaft 6'4, and consequently, prohibiting the release of the machine by the motor bar 80. On the other hand should a transaction key 119 be depressed and none of the clerks keys be depressed,- then the pro jections2l8 and 223 would remain in front of the pins 216 and 217 respectively, and in like manner prevent the release of the machine by depression of the motor bar 80.

However, when a key 118 and a key 119are depressed, the clerks and transaction controlling bars'201 and 205 ai'e'moved downwardly, thus removing the projections 218 and 219 from the pin 216, and causing the pins 220 and 225. to rock the arms 221 and 226 respectively, thus moving the arms 223 and 228 from the path of movement of the pin 217, which permits the shaft 64 to receive its clockwise movement upon depression of the motor bar to release the machine.

Should a key 118'be depressed and then released by striking another key'118 a quick, sharp blow, the partial depression of this other key would not be suflicient to cause it to be locked down by the shoulder 17 8 of the detent 172. But the arm 223 and projection 218 (Fig. 7 would both have been removed from thepins 217 and 216 respectively, by'

the depression of the first key'118. Then upon the release of this depressed key by the tapping of the other key, the projection 218 is again moved into the path of the pin 216, but the arm 223 is not moved into the path of the pin 217. If, with the parts in these positions, the motor bar 80 is depressed, the horizontal arm of the bell crank 88 (Fig. 2) is removed from the stud 90, and the spring 96 (Fig. 1) rocks the shaft 64 until the pin 216 (Fig. 7) strikes the projection 218. The clearance between the projection 218 and pin 216 is greater than the clearance between the pin 90 and bell crank arm. There is no clearance at all between the pin 217 and arm 223. With the parts in the positions in which they are left after the motor bar has been depressed in the manner just described, the machine can not be released, and it is necessary to rock the shaft 64 counter-clockwise to normal position by manual means before the machine can again be released for operation. This manual means includes a lever 230 (Fig. 1) having a handle 231 extending through the cabinet of the machine so that it may be grasped by the operator.

Should the keys 119 and motor bar be operated, in a manner as just described for the clerks keys 118, then the projection 219 and arm 228 (Fig. 6) function in the same manner that the projection 218 and arm 223 function, to prevent the release of the machine.

Should a key 118 be depressed very slowly just far enough to remove the arm 223 from the pin 217, and then be pulled out, after which the operator would depress the motor bar 80, the projection 218 would function in the same manner as before described, thus preventing the machine from being released.

Keyb0arcZT0taZ lever The total lever 120 (Fig. 7) is used during multiple-item transactions to control the machine to take the total from the item totalizer. During other total and subtotal operations it is used to control the machine to take a total or sub-total from the clerks and transaction totalizers.

Mae/tine release during total and sub-total operations During total and sub-total operations, since only one totalizer can be cleared during any one operation, it is necessary that any one of the keys 118, or any one of the keys 119 in conjunction with the motor bar 80, release the machine for operation.

To accomplish the above result there is a device which couples together the clerks and transaction controlling bars 201 and 205 (Figs. 6, 7 and 8) so that both projections 218 and 219 may be withdrawn from the path of the pin 216 for such operations.

The bar 205 (Figs. 7 and 8) has a slot 335 adapted to receive the upper end of a conpling lever 336 pivoted at 337 on the bar 201. The lever 336 has a fork 338 engaging a pin 339 on an arm 340 secured to the arm 268.

To reset the transaction totalizers the total lever 120 is moved to the reset trans. total position (Fig. 12); and to reset the clerks totalizers it is moved to the reset clerks total position. To take a reading or sub total operation of the transaction totalizer the lever120 is moved to the read trans. total position; and to take a sub-total of the clerks totals it is moved to the read clerks total position. 1

When the lever 120 is moved to the item total position the arms 268 and 340 are not moved because the portion 263 (Fig. 8) of the slot in the cam plate 261 is concentric With the pivot of the total lever. When the total lever is moved to the reset trans. total position the roller 267 is moved into the cam portion 262 thus rocking the arms, 268 and 340 clockwise which moves thecoupling lever 336 into the notch 335. As it is necessary to move the total lever farther than is required to rock the coupling lever 336, the right-hand side of the fork 338 is shorter than the left-hand side, and the pin 339 is disengaged from the lever 336 after the coupling of the controlling bars 201 and 205 has been effected and the upper end of the coupling lever is held in the notch 335 by a spring 341. When the lever 120 is moved to the reset clerks total position, then the roller 267 is moved into the extreme righthand portion of the cam slot 262, but since the pin 339 is disengaged from the fork 338 the coupling lever 336 receives no further movement than it did when the total lever was moved to the reset trans. total position.

W'hen the total lever is moved to the read trans. total position, the coupling lever 336 is moved into the notch 335 of the detent 205 by the cam slot 264. It is necessary to move the total lever farther than is required to rock the coupling lever 336, just as when moving the total lever to the reset trans. total position explained above. During the movement of the lever 120 to the read trans. total position the pin 339 is disengaged from the lever 336 after the coupling of the controlling bars 201 and 205 has been effected. When the total lever is moved to the read clerks total position, the cam slot 265 causes the arms 268 and 340 to move farther clockwise, but since the pin 339 is disengaged from the fork 338 the coupling lever 336 receives no further movement than it did when the total lever was moved to the read trans. total position.

Whenever the coupling lever 336 is in notch 335, the depression of a key 118 or 119, to control the selection of a totalizer for a total or sub-total operation, withdraws both of the projections 218 and 219 from the pin 216, and also withdraws the arms 223 and 228 from the pin 217, thus permitting the motor bar 80 to release the machine for a total or sub-total operation, as the case may be. I

As is wellvknown in the art and as fully explained in the parent application referred to rabove, movement of the total lever 120 out of the add position rocks the shaft 250 (Fig. '1) clockwise,whereupon the arm 7 35, link 736 and lever 737 moves the link 738 to the left to couple the cam 743 to the gear 72 and place the roller'7 44 in position to be engaged by the race of the cam 743.

'Durin sub-total or total-taking operations the gear 72 makes one revolution as compared to one half revolution for adding operations.

To prevent the cam 103 from restoring the shaft 64 during the firstcycle of a sub-total or total-taking eration', the shifting of the link 738 to-the le causes the oifset in the open ingr98of the link 94 to be removed fromthe stud 99 carried by the lever 100. The cam 743 being coupled to the gear 72 revolves therewith, and due to the co-operationof the roller 744 with the cam 743 the link 7 38 is given additional movement to the left, so

that when the cam 103 during the first cycle of a total-taking operation rocks the lever 100 clockwise, the link 94 will be in a position where the stud 99 will travel along the rightinc position.

hand side of the opening 98. Thus, the link 94 will receive no downward movement and the shaft 64 will remain stationary. Near the end of the second cycle of a total-taking operation the cam 7 43 and link 738 return the link 94 to a position where the stud 99 will "engage a step 801 in'the opening 98, to rock the'shaft 64 counter-clockwise to disengage the motor from the machine,'and restore the machinereleasing mechanism toits normal Clerk and transaction key interlock When the total lever is moved into either of the transaction total positions itis essential that a transaction key 119 only be depressed and that the clerks keys 118 be prevented from being depressed, and when the total lever 120 is moved into either ofthe clerks total positions it is essential that a clerks key 118 only be depressed and that the transaction keys 119 be prevented from 'de-' pression,

To accomplish the above result, the mechanism is arranged as follows. The arm 268 (Figs. 7, 8 and 9) has a pin 346 engaged by a slot in an interlocking arm 347 provided with notches 348 and 349. This arm 347 is loosely mounted upon the shaft 250. The

transaction detent' supporting arm 184 has a lug 350 and the clerks detent supporting arm 174(Fig. 10) has a lug 351.

It will be recalled that the depression of a clerks key 118 andtransaction key 119 moves the retaining detents 172 and 182 downwardly until the key pins 171 and 181 pass the shoulders 178 and 188, whereupon the springs 177 and 187 raise the detents to lock the operated keys in depressed positions. The downward movement of the detent 182 rocks the arm'184clockwise, and during item-entering operations the lug 350 passes in front of the interlocking arm 347. lVhen the total lever is moved to take a total or sub-total,

of a transaction totalizer, the arm 268 positions the interlocking arm 347 so that the notch 348 is in the path of movement of lug 350 associated with thetransaction keys 119,

and when a transaction key 119 is depressed the notch 348 providesa space into which the lug 350'may move. now be madeto depress a clerks key, the lug 351 associated therewith would contact the outer periphery of theinterlocking arm 347,

thus preventing depression of said clerks When the total lever 120 is moved to either of the clerkstotal positions, the interlocking arm 347 is moved to positlon the notch 349 (Fig 9) in the path of the lug 351 (Fig. 10)

depressed, and with the total lever. 120 in a total taking position, the machine is free to be released'by depressing the motor bar 80,

as above described. 7

Assume now that the operator has reset a clerks totalizer during the previous operation of the machine, and at the end thereof the selected clerks key 118 remains depressed;

then let us assume that the operator desires to reset a transaction totalizer. First the operator shifts the total lever 120 into the transact1on reset position, and since a pre viously described clerks key is still depressed, the machine could be released for operation with the total lever in the transaction reset position,'and with'the clerks key 118 dopressed. This, of course, would result in the total lever selecting the transaction line 7 of totalizers and the keys selecting the clerks totalizer from the clerks line, which would ultimately result in an improper operation of the machine.

Therefore, to prevent such a result, an interlocking mechanism isprovided to pre- Should an attempt vent shifting of the total lever 120 into a read or reset transaction position while a key 118 and'119 is depressed. This interlock includes the arms 203 and 207 (Figs. 7 and 8), each of which is provided with a locking finger 342.

When the total lever is moved to the read J:

transaction total position, or reset total transaction position, a notch 343 in the plate 344 is positioned directly beneath the looking fingers 342 so that when either of the arms 203 and 207 is moved by depression of either one of the keys 118 or 119 for a total or sub-total operation, the associated finger 342 enters this notch '343, thus preventing any movement of the total lever as long as the keys 118 and 119 remain depressed.

Before the total lever can be moved from I either the reset transaction or read trans action position into the reset clerks or read clerks position, it is necessary to release the depressed transaction key 119 by operation of the lever 193 as above described. This is to withdraw the finger 342 on the arm 207 from the notch 343, since the lever 120 cannot be shifted when the plate 268 is locked by the finger 342, inasmuch as the stud 267 projects into the cam slot in the plate 261. Release of such key 119 Withdraws the looking finger 342 from the notch 343 and permits adjustment of the total lever. Then, when the total lever is moved into either the clerks read or clerks reset position, a notch 345 is positioned in the path of the locking fingers 342. Subsequent depression of the clerks key 118 enters the finger 342 associated therewith into the notch 345 to hold the total lever in such position until the clerks key 118 is released by operation of the lever 193.

A similar notch 352 is provided in the plate 344, which notch 352 is adapted to be positioned in the path of the locking finger 342 when the total lever is in the item entry position. Depression of a key 118 and 119 shifts both of the locking fingers 342 of the arms 203' and 207 into the notch 352 to prevent movement of the total lever into a transaction read or transaction reset position, or into a clerks read or clerks reset position. However, a concentric section 263 of the cam slot in the plate 261 permits the lever 120 to be shifted out of add position to item total position to allow the taking of the total of a multiple-item transaction without releasing the depressed keys 118 and 119.

Difie'rentc'al meabundant-transaction keys The transaction differential mechanism shown in Fig. 6 is fully described in the parent application, Serial No. 218,200, of this division. Therefore, only a brief description wi ll be given here.

The cam shaft 57 has fast thereto cams 363 and 364 adapted to rock a Y-shaped lever 370 by a spring 377. Fast in the arm 406 is a stud 384 adapted to be engaged by a shoulder 383 on the driving segment 370 to furnish a positive return for the arm 406.

As the driving segment 370 is oscillated, the arm 406 being connected thereto is likewise oscillated, the first movement being clockwise. Contact of the bell crank 376 with the stem of a depressed key 119 disengages the latch .37 4 and differentially positions a beam 393 pivoted to the arm 406 and having a U-shaped slot engaging a stud 410 fast in the link 411, to differentially position said link. The link 411 is pivoted on one end to an indicator segment 412, and on the other end to an arm 414 connected by a yoke 490 to a segment 491, adapted to engage a rack 492 to position a. slide 493 to select a totalizer and a printing wheel (not shown) corresponding to the depressed key 119. Likewise, the proper indicators will be selected by the positioning of the indicator segments 412.

It was thought unnecessary to show the differential mechanism for the clerks keys 118 in this case, as this mechanism is fully described in the parent case referred to above.

The parent case also explains why the engagement of the differential mechanism for the transaction keys with the clerks keys does not affect the transaction or the clerks totalizers in adding or total-taking operations.

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 em bodiment 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:

1. In a machine of the class described, the combination of a normally locked main operating mechanism, releasing mechanism therefor, a single bank of release keys divided into a plurality of roups, a member operable by each group of keys for compelling the depression of a key in each group before the releasing mechanism can be operated, and

I means for connecting said members so that the members operate in unison whereby said releasing mechanism can be operated after a single key of any group is depressed.

2. In a machine of the class described, the combination of a normally locked main opcrating mechanism, releasing mechanism therefor, a single bank of release keys divided into a plurality of groups, a member operable by each group of keys for compelling the depression of a key in each group before the release mechanism can be operated, means for connecting said members so that the members operate in unison whereby said releasing mechanism can be operated after a single key of any group is depressed,

and a manipulative device for operating said means.

' 3. In a machine of the class described, the combination oi a normally locked mainoperating mechanism, releasing mechanism therefor, a single bank of release keys divided into a plurality of groups, a member operable by'each group of keys for compelling the depression of a keyineach group 2o V by each group of keys forcompelling the debefore-said releasing mechanism can be operated, and means carried by one of said members and adapted to connect said members whereby they mayoperate in unison so that the releasing mechanism can be operated after a key ineither group is depressed.

4. In a machine of the class described, the

combination of a normallylocked main operating mechanism, releasing mechanism therefor, a single bank of keys divided into two groups, and two members one operated pression of a key in each group beforethe releasing mechanism. can be operated one of said members having a recess and the other member carrying a lever one end of which may be moved into said recess to couple said members together so that the releasing mechanism can be operated after key in any one I group is depressed.

combination of a normally locked main operating mechanism, releasing mechanism therefor, a

5. In a machine of the class described, the

ingle bank of keysdivided into two groups, two members one operated by each group of keys for compelling the depression of a key in each group before the releasing mechanism can be operated, one of said members having a recess and the other member carrying a lever one end of which may be moved into said recess to couple said members together so that the releasing mechanism can be operated after a key in any one group is depressed, and means for moving the end of the lever into said recess.

6. In a machine of the class described, the combination of a normallylocked main operating mechanism, releasing mechanism therefor, a'single bank of keys divided into ;two groups, a plurality of members operable independently of each other by-the keys, one member for each group of keys, for compelling the depression of a key in each group before said releasing mechanism can be operated, a lever carried by one of said members for coupling the members to operate in unison so that the releasing mechanism can be operated after either one of the keys are depressed, and a cam device having a plurality of positions of adjustment for causing said lever to couple the members together when said cam device 1S moved to certain of its positions.

4. In a machine of the class described, the

combination of a normally locked main operating mechan sm, releasing mechanism therefor, a single bank of keys divided into two groups, two members, one operated by the keys of each group of keys or compelling the depression of a key in each group beior the releasing mechanism can be operated, one

of said members having a' recess and the other member carrying a lever, one end of which may be moved into said recess to couple said members together so that the releasing mechanism can be operated after a key in any one group has been depressed, a manuallyloperated device adapted to be adjusted to a plurality ofpositions, and a cam carried bysaid device fOPIIlOVlIlg said lever into said recess when said device ismoved into certain of its positions. v

8. ln'a'inachine. of the class described, the

combination of a normally locked operating on, one of said projections adapted to engage the slot in the latch, the other arranged to cooperate with said cam so that manipulation of said device will cause the latch to be moved into the recess to connect the controlling members so thatthe depression of a key in either group will condition the machine for releasing. i 1

9. In a machine of the class described, the combination of a normally locked operating means; a releasing means therefor; a bank of keys divided into two groups; a controlling member for each group of keys arranged to block the releasing means until a key in each group is depressed, one of said members having a recess; a lever on the other of said M members one end of said lever being adapted to be moved into the recess to connect the two members so that the depression of a key in either group will rock both controlling members into inefi'ective positions to free the releasing means; a. hand operated device arranged to be-moved to several positions; and

a'pivoted-member intermediate the hand operated device and the lever arranged so that the moving of the hand device to certain posi-- tions will cause the intermediate member to rockthe said lever into said recess.

10. Ina machine of the class described, the

combination with, a normally locked operating means; releasing means therefor; and-a bank of keys divided into two groups; oi a controlling member for each group or" keys arranged to block the releasing means until a key in each group, is depressed, one of said controlling members having a recess therein;

a latch carried by the other controlling memher, one end of said latch being adapted to be moved into the recess, the other end thereof being bifurcated; a pivoted member having a plurality of arms; a projection on one of said arms arranged to cooperate with the bifurcated latch; a manipulative lever; a cam thereon; another projection on another arm of said pivoted member adapted to cooperate with said cam so that manipulation of the manipulative lever to a certain extent in either direction will cause the latch to be positively moved into the recess, further manipulation of the manipulative lever in either direction causing said projection to be disengaged from the bifurcated latch; and means for retaining the latch in the recess to connect the two controlling members so that the depression of a key in either group will move both controlling members to ineffective positions to free the releasing means.

11. In a machine of the class described, the combination of a normally locked main operating mechanism; releasing means therefor; a bank of keys divided into groups; a controlling member operated by each group of keys to compel the depression of a key in each group before the releasing mechanism can be operated, one of said members having a recess; and a pivoted lever carried by thc other controlling member, said lever having a hook thereon adapted to be moved into the recess in the other controlling member to couple the two controlling members together so that the depression of a key in either group will condition the machine for releasing.

12. In a machine of the class described, the combination of a normally locked operating means; releasing means therefor; a bank of keys divided into two groups; a controlling member operated by each group of keys to prevent the release of the machine until a key in each group is depressed; a total lever; and means operated by the total lever for coupling the controlling members together so that the depression of a key in either group will condition the machine for releasing.

In testimony whereof I aflix my signature.

SAMUEL BRAND.

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