US2338961A - Transferring device for the figures - Google Patents

Description

Jan. 11, 1944. T, dHMO 2,338,961

TRANSFERRING DEVICE FOR THE FIGURES IN CALCULATING MACHINES Filed Aug. 8, 1939 4"SheepS-Sheet 1 Jan. 11, 1944. T. OHMOTO ,9

TRANSFERRING DEVICE'FQR THE FIGURES IN CALCULATING MACHINES Filed Aug. 8, 1939' 4 SheetsSheet 2 If Ila/ Jan. 11, 1944. T. OHMOTO 2,338,961

TRANSFERRING DEVICE FOR THE FIGURES IN CALCULATING MACHINES Filed Aug. 8, 1939 4 Sheets-Sheet 5 Jan. 11, .1944. OHMOTO 2,338,961

TRANSFERRING DEVICE FOR THE FIGURES IN CALCULATING MACHINES Filed Aug 8, 1939 4 Sheets-Sheet 4 Patented Jan. 11, 1944 TRANSFERRING DEVICE 'Fon, THE FIGURES IN CALCULATING MACHINES Torajiro ()hlnoto, Higashiyodogawakm, "Osaka, Japan; vested in the Alien Property Custodian Application August 8, 1939, Serial No. "288,965 3 Claims. (01. get-130) This invention relates to an interlock for use in calculating machines, preferably of the well known Bruns viga (Odhner) type, characterized in part by the provision of cam disks and pin wheels.

In machines of this type the operator manually rotates each denominational cam disc to project the number of teeth from the periphery of the pin wheel corresponding in number to the value of the digit to be entered in that denomination.

Thereafter, rotation of the main drive shaft imparts a complete rotation to the pin Wheels, to cause the projected pins to engage the teeth of transmission gears corresponding denominationally and lying in the same vertical planes with the pin wheels to turn the gears a number of steps or increments of movement equal to the number of pins projected from their respective pin wheels,

The transmission gears, in turn, are generally in constant mesh with their totalizer wheels of correspondingdenomination, so that at the end of a complete rotation of the pin wheels and cam disks the totalizer wheels will have been rotated each a number of steps corresponding to the values of the denominational digits represented by the projected pins of the indexing wheels.

Unless otherwise prevented, the projected pins are withdrawn from effective position after having operated their totalizer wheels, and during the latter portion of the revolution of the pin wheels.

In the operations of multiplication and division, however, the operator will set means to hold out of operation the restoring means for the projected pins in the several orders, which permits the amount indexed on the pin wheels to be repeatedly entered on the totalizer wheels by continuous rotations of the indexing wheels.

At the end of such successive revolutions of the indexing wheels, the operator should clear the indexing mechanism, but this requirement is ofttirnes overlooked.

It is customary in machines of this type, to provide an item indicating mechanism generally in the form of a set of numeral wheels corresponding denominationally with the denominational indexing wheels, and with which the item indicating wheels are connected by denominational gear trains, to the end that the item wheels shall indicate the item set up in the indexing Wheels.

The transmission gears and the totalizer Wheels are mounted in a. carriage shiftable axially relatively to the denominational series of indexing wheels to facilitate the operations of multiplication and division, in well known manner.

In the course of solving problems of various kinds, it is often desired to. transfer into the indexing mechanism, the result, quotient of 'accumulation registered on the totaliz'er wheels, for further treatment.

Obviously, this could be'done by listing the reading of the totaliz'er wheels on 'a paper, clearing the totalize'r wheels -and setting up such listed resulto'n theindexing pin wheels as in the case of an item, but this depends for its accuracy on the human element, and to render the transfe1'-'o"f'such amounts more accurate, it has been heretofore proposed to mechanically transfer the amount registered on the totalizer wheels directly into "the "indexing mechanism, to which operation machines of this type readily lend themselves.

But in effecting this transfer, it is of first importance that the indexing mechanism be clear, thatis, that such indexing mechanism does not indicate any item whatsoever, prior to the transfer of the registered amount from the totalizer me the indexing mec anism.

Th'e'pr'esent invention relates more particularly, therefore, to the provision of means to prevent the transfer of amateurt registered in the totalize'r, into the indexing mechanism as long as any pin wheel of the latter represents "a digit, or in other words, so long as any of the manually set pin Wheels is in other than its normal cleared or zero position, such sensing interlocking means operable in connection with a total transfer mechanism modified to accommodate the interlocking mechanism. v

According to this invention the results are conveniently attained by providing an interlock between the indexing mechanism and the means for conditioning the machine 'to 'transfer a registered amount from the totalizer-i'nto the indexing ec e s' m This interlock is under ccntrol of the means ior conditioning the machine to transfer an amount from the totalizer wheels I onto the indexing mechanism, and is of such character that, if any indexing wheel is set to represent a digit, the conditioning means for effecting the transfer is locked against operation.

As onemeans to carry out the invention, normally idle finger pawl's or feelers under control of the transfer conditioning means are positioned adjacent mutilated blocking numbers controlled by the indexing mechanism,

During normal adding and subtracting operati'ons, the feeler fingers or pawl's are inactive, but

upon attempting to set the machine to transfer a total from the totalizer onto the indexing mechanism, the respective denominational feeler pawls advance towards their respective blocking members. If the mutilations lie in the paths of the feeler fingers, indicating that the indexing wheels are clear, the setting of the machine to effect the transfer can be completed, but should one feeler finger be obstructed by contact with an unmutilated portion of its blocking member, the conditioning means is locked against consummating the proposed setting, until that indexing wheel set to a digit-entering position is restored to normal or cleared.

More especially, for each of the indexing wheels, there is provided a circular blocking member having an opening or mutilation formed therethrough at such a point in the blocking member that when the corresponding indexing wheel is in its cleared position, the opening or mutilation lies opposite and in line with its feeler finger controlled by the transfer conditioning means.

The denominational feeler fingers or pawls are pivotally mounted upon rocking arms, and lie radially to the axis of rotation of the circular blocking members and perpendicular to their respective supporting arms.

Assuming the positions of the blocking members to be such as to permit the entry of the feeler fingers into the mutilations of the blocking members, the ensuing partial rotations of such of the indexing wheels as receive digits transferred from the totalizer wheels of corresponding denomination, will advance one end wall of the respective mutilated blocking members towards their respective feeler fingers to rock the pivoted feeler fingers projected into the circular blocking members and detrude the fingers from the blocking members, the mutilations being of sufficient width to permit this swinging movement of the feeler fingers or pawls.

This provision prevents the feeler fingers from interfering with the rotations of their corresponding indexing wheels during the transfer of an amount from the totalizer wheels onto the indexing wheels.

I shall now explain the interlock device in accordance with the invention with reference to the accompanying drawings, in which Fig, l is a plan view of a rotary calculating machine provided with the interlock mechanism according to the present invention,

Fig. 2 is a plan view showing the numeral wheel carriage slightly shifted to the left,

Fig. 3 is a bottom plan view of Fig. 1,

Fig. 4 is a bottom plan View of Fig. 2,

Fig. 5 is a sectional view in side elevation on the line VV of Fig. 3,

Fig. 6 is a sectional view in side elevation on the line VI-VI of Fig. 4,

Fig. '7 is an enlarged rear view of a part of the,

intermediate wheels between the indexing wheels and the item indicator wheels,

Fig. 8 is a, sectional side elevation of Fig. 7.

Machines of the type to which this invention is applied, include a base I having side frames la, between which are mounted a denominational serie of indexing wheels 2, 3, 4- (Figs. 1 and 2) of the cam disk and pin wheel type, shown conventionally in Figs. 5 and 6, mounted on a shaft lb.

These indexing wheels oractuators each include a pin wheel equipped with a series of driving pins 4, the pin wheels being rotatable with the shaft lb, and a manually settable cam disk 3, a

portion of the periphery of which may be toothed as at 33.

Mounted in a carriage 9 shiftably supported on the base I for axial travel transversely of the machine is a set of totalizer wheels 10 journaled on a shaft llla extending between the ends of the carriage 9.

Secured to one side of each totalizer wheel I0 is a gear I l in mesh with the corresponding gear l2 of a set of transmission gears journaled on a shaft lEa mounted in the end frames of the slide and arranged parallel with the totalizer shaft lil.

The operator sets up an amount on the indexing wheels in the usual manner by rocking the proper cam disks 3 forwardly (clockwise in Fig. 5) a number of steps corresponding to the values of the digits to be entered in the respective denominational totalizer wheels H3. The cam disks, when rocked, project the outer ends of a number of pins 4 beyond the peripheries of their respective wheels corresponding to the values of the digits.

The shaft lb is then given a complete rotation to cause the projected pins 4 to rotate their transmission gears l2 each a number of steps equal to the number of pins projected from the associated pin wheel, whereby to enter such amount on the corresponding totalizer wheels ID.

If no means is operative to return the cam disks 3 and, therefore, the projected pins 4 to their normal inactive positions, during the rotation, the cam disks and pins remain in their set positions at the completion of the rotation.

In such event, a second rotation of the shaft lb results in again entering on the totalizer the amount originally set up on the indexing mechanism.

This quality is utilized in performing multiplication and division.

A gear 5 (Figs. 1, 2, 5 and 6) is fast with each cam disk 3, each denominational gear being in mesh with an associated intermediate gear 6 of a series of such gears journaled on a cross rod 6a mounted in the stationary side frames la of the machine.

The intermediate gears, in turn, respectively mesh with gears 8 secured to indicator wheels I journaled on a rod la extending between the side frames la.

Obviously, the cam disks 3, when manually turned by the operator in setting up an amount, will communicate this motion through the gears 5 and intermediate wheels 6 to the indicator wheels I, to apprize the operator of the amount represented on the indexing Wheels.

In performing multiplication and division on the machine, the totalizer carriage 9 is shifted denomination by denomination relatively to the indexing wheels or actuators by means of a handle 30 controlling the engagement of a dog 32 (Figs. 3 and 4) with a normally stationary notched rack bar 29, the dog being carried by a rocker 3| pivoted at 3 la to the bottom face of the carriage 9. The dog 32 is urged into engagement between the notches 28 of the rack bar 29, and the notches 23 are spaced apart distances equal to the spaces between the transmitting gears l2 which spacing corresponds with that between the rows of pins 4 on adjacent pin wheels 2 (Fig. 1) so that in each denominational position of the carriage 9 relatively to the indexing wheels, those pin wheels 2 which lie in the same vertical plane with the transmitting gears IE will impart motion thereto.

In transferring amounts registered on the totalizer'onto the indexing wheels, it isnecessary in the present, machine, that the carriage 9 be shifted a less distance than that between denominations, to locate the transmittinggears l2 in position to engage the arcuate series of teeth ib'of'the cam disks 3.

Such lesser shift or the totalizer' carriage is conveniently effected by manually operating the lever 2& (Figs. 3 and 4) extending from front.

to rearof the machine beneath the base l'thereof, andpiivoted at 25c adjacent the rear edge of the base;

A pairofcorrespondingly positioned bell cranks 27' are pivotedat 25a, 21a, to the bottom face of the base near the respective opposite sides thereof and beneath the carriage 9.

The notched rack 29: is pivoted at its ends to the ends of the respective rightward extending arms (Figs. 3'and a) of the bell cranks 26 and 2'5, and a second bar arranged parallel with the notched bar 29. is pivoted at its ends at 25a, 25b, to thedepending orrearwardly extending arms of the bell cranks.

In their normal positions, shown in Fig. 3, the rearwardly extending arms of the bell cranks lie ata slight incline to the right of the vertical.

The pivot 2511 may also serve as a means to connect the hand lever 24 with the bar 25 ofv the parallel bar arrangement just explained.

In operation, the operator presses the handle 3 at the outer front end of the lever 24 towards the stop this to impart a parallel motion towards the left (in Figs. 3 and 4) to the bars 25, 29 and bell cranks 2t, 23'', of suffici'ent extent to cause the notched rack bar 29 operating through the dog 32 to shift the pivoted slide 31 and its carriage 9 leftward whereby to displace the series of transmitting gears I2 out of line with the rows of pins i of the pin wheels 2 and into line with the armate teeth '33 on the series of cam disks 3.

With the carriage 9 in this position, rotation of the totalizer shaft [a in a direction to clear the totalizer, will cause the totalizer wheels ID, as they are returned to zero, to rotate the transmission gears l2 which now mesh with the teeth of the cam disks 3. Each totalizer wheel I!) registering a significant digit will, therefore, turn its associated cam disk 3 a number of steps equal to the value of the digit registered, and the cam disks, in turn, will cause the projection of the number of driving pins l representing those digits, beyond the peripheries of their associated pin wheels 2.

At the end of this operation, therefore, the totalizer wheels iii will stand in their zero or cleared positions, and the projected pins of those indexing wheels corresponding denominationally with of the totalizer wheels as formerly registered significant digits, will represent the amount of the total.

The operator may now treat such total as a divisor or multiplicand depending upon the kind of arithmetic problem being performed.

(lbviously, it would render the whole operation futile if the amount registered on the totalizer could be transferred or set up mechanically in the indexing wheels while the latter represented some number. in other words, the result will be inaccurate if the operator, in performing a chain of operations, forgets to clear the indexing wheels before transferring an amount from the totalizer onto the indexing wheels.

And this invention is particularly directed to means to prevent the possibility of transferring an, amount from the: totalizer onto indexing Wheels whichalready-represent some number.

It will be understood from the foregoing description, that rotation of the cam disks 3 by the totalizer Wheels H] in thetransfer of the amount from the totalizer wheels to the indexing wheels, must also rotate the gears associated with the respective cam disks 3-, and that these gears 5,

in turn, rotate the intermediate gears 5 with which they mesh.

Therefore, in carrying out this invention I conveniently provide each intermediate gear t on one side with, a segment ring it. When the actuators 2 are reset to zero, i. e. when the indicator wheels 1 indicate 0 a pawl i? positioned opposite to said segment ring M is ready to be entered into the cut-out portion is thereof.

The pawl ll pivotally mounted On an arm It secured to a horizontal shaft [5, is perpendicular to the arm I6 and movable in one direction only, the other end being held under the action of a springv l8 in contact with a projection it formed on the arm l6,

Whenthe pawl I? is in alinement with the cutout portion l3 of the ring it the arm iii may be rocked to and fro by an oscillating lever 22-. Lever 2-2 is pivotally connected through a connecting member 2i to another arm to secured to the shaft l5. The oscillating lever 22 bears at one end against one arm of a bell-crank lever 23 pivotally mounted on the under-side of the base i. The other arm of bell-crank lever is connected to the connecting member 25 which is movable in either direction by the oscillating hand lever 24.

If the rack 28 is moved backward and slightly to the left through the connecting member 25 and the bell-crank levers 2'6, 21 by the oscillating hand lever 2d, the projection 32 which is now in mesh with the teeth 28, is caused to move slightly to the left. Hence the slide 3! and consequently the carriage 9 is moved correspondingly to the left. This movement brings the gear it which is in mesh with the gear I l into engagement with the teeth 33 of the segment gear 3.

In order to transfer figures registered on the numeral wheels iii to the actuators 2 it i necessary that the actuators be first reset to Zero so as to bring the cut-out portion it of the segment ring M in ali-nement with the pawl ii. If thereupon the carriage 9 is slightly shifted to the left by the oscillating hand lever 25 as above described, the gear 12 is moved into mesh with the gear 3 while the pawl i? is caused to engage into the cut-out portion 43. This is accomplished by the movement of the bell-crank lever 23 in cooperation with the oscillating member 22, the connecting member 2i and the arm 25. On zeroizing the numeral wheels ii) the gears it, 52 and it are rotated and the corresponding number of pins 4 projected from the actuators. For instance, if a numeral wheel which indicates 5 is reset to zero, the teeth 33 are caused to move by five teeth through the intermediary of gears i 5, i2, and five pins 4 with an interval equal to the pitch of the teeth 52 are projected out of the actuator 2. On rotation of the numeral wheel Ii] the pawl ii is moved against the action of spring it out of mesh with the cut-out portion by contact of one end wall of the cut-out portion of the segment ring l i, so that the end of the pawl rests against the periphery of the segment ring it without preventing the rotation of the latter.

If the total-transfer operation is performed without, aeroizing of the actuators, wrong figures are indicated on the actuators as figures registered on the numeral wheels are added to those on the actuators. According to the invention damage of the mechanism by mishandling and errors in calculation may be completely avoided by the interlock device described hereinabove. Total transfer is only possible, i. e. the oscillating hand lever 24 is only operable to bring the gear 52 into engagement with the gear 3 when the actuators are brought into zero position and when the cut-out portion I3 of the segment ring N is in line with the pawl H.

A spring Zia may restore the arms l5, link 2| and bell crank 23 to their normal idle positions, and therethrough, aid in restoring the parallel bay arrangement and hand lever 24, when the operator relieves his pressure on the hand lever.

I claim:

1. In a calculating machine, the combination with denominationally arranged indexing wheels, each including a setting member and an actuating member; and a toothed element rotatable with each etting member; totalizer wheels corresponding denominationally with the indexing wheels; transmission gears, each in mesh with its associated totalizer wheel, and engageable by the corresponding actuating members; and means to shift the totalizer wheels and transmission gears axially relatively to the indexing wheels to displace the transmission gears relatively to their corresponding actuating members and engage them with said toothed elements of the setting members, to enable the transfer of amounts from the totalizer onto the indexing wheels; of an interlock between said totalizer shifting means and said indexing mechanism, to prevent the axial shift of the totalizer wheels to total-transfer position when the indexing mechanism represents an amount, including a stop ring rotatable with each of the setting members, each segmental ring having a cut-out portion; a shaft; a series of arms mounted on the shaft; locking pawls pivotally mounted on the respective arms to yield in one direction only, and normally held perpendicularly thereto and radially to the axis of the segmental rings; the cut-out openings in the respective segmental rings lying in radial alinement with the ends of the looking pawls only when the indexing wheels are in their normal zero positions, to enable the pawls to complete their advance; and means operable by the means for axially shifting the totalizer to rock the shaft and its locking pawls towards the segmental rings and through the openings therein, providing the openings are alined with the pawls, said segmental rings effective, when rotated during the transfer of an amount onto the indexing wheels, to rock their locking pawls relatively to their supporting arms, out of the cut-out openings so that the ends of said pawls trail on the unmutilated peripheries of the rings as the latter turn with their setting members.

2. in a calculating machine, the combination with denominationally arranged indexing wheels, each including a setting member, and an actuatmember; and a toothed element rotatable with each setting member; totalizer wheels corresponding denominationally with the indexing wheels, and transmission gears, each in mesh with its totalizer wheel of corresponding denomination and engageable by the corresponding actuating members, and a carriage in which the totalizer wh els and transmission gears are mounted, the carriage being shiftable in a direction parallel with the axis of the indexing wheels;

of means to shift the carriage with its totalizer wheels and their transmission gears axially relatively to the indexing wheels, to displace the transmission gears relatively to their corresponding actuating members and engage them with said toothed elements of the setting members, to enable the transfer of amounts from the totalizer onto the indexing wheels, including an operating hand lever; parallelly arranged bars, one of Which is notched; corresponding pivoted, spaced bell cranks; the parallelly arranged bars being pivotally connected to corresponding arms, respectively, of the bell cranks; a projection on the carriage to engage with the notches of the notched bar, said operating lever being connected with the parallel bars to rock the bars and shift the carriage with its totalizer wheels and transmission gears relatively to the indexing wheels, whereby to displace the transmission gears relatively to their actuating members and engage them with said toothed elements of the setting members to enable the transfer of amounts from the totalizer onto the indexing wheels; and an interlocking mechanism between said totalizer shifting means and said indexing means to prevent shifting of the carriage to total transfer position by said operating lever, when any amount is represented in the indexing mechanism, including a segmental stop ring rotatable with each of the setting members, each segmental ring having a cut-out portion; a shaft; a series of arms mounted on the shaft; locking pawl pivotally mounted on the respective arms to yield in one direction only, and normally held perpendicularly thereto and radially to the axis of l the segmental rings; the cut-out openings in the respective segmental rings lying in radial alinement with the ends of the locking pawls only when the indexing wheels are in their normal zero positions, to enable the pawls to complete their advance; and means operable by the means for axially shifting the totalizer to rock the shaft and its locking pawls towards the segmental rings and through the openings therein, providing the openings are alined with the pawls, said segmental rings effective, when rotated during the transfer of an amount onto the indexing wheels, to rock their locking pawls relatively to their supporting arms, out of the cut-out openings so that the ends of said pawls trail on the unmutilated peripheries of the rings as the lat ter turn with their setting members.

3. In a calculating machine, the combination with a slidable carriage; denominationally arranged totalizer wheels mounted in the carriage; corresponding transmission gears in mesh with the totalizer Wheels, and also mounted in the carriage; denominational indexing wheel relatively to which the carriage and its totalizer wheels and transmission gears shift axially, each indexing wheel including an actuating member, a setting member rotatable both relatively to, and also with the actuating member; a toothed segment, and an indicator driving gear fast with each setting member to rotate therewith; indicator wheels to indicate the amount set upon the indexing wheels; intermediate gears to communicate motion from the indicator-drive gears to the indicator wheels; and means to shift the carriage with its totalizer wheel and transmission gears from a position wherein the transmission gears are operated by said actuating members to a position wherein the transmission gears engage the toothed segments of the setting members; of an interlocking device to render said carriage shifting mean inoperative when the indexing mechanism represents an amount, said interlocking device including a segmental stop ring mounted on the respective intermediate gears, said step rings each having a cut-out portion; a universal shaft journaled adjacent the intermediate gears; supporting arms fast on said shaft; a locking sensing pawl pivoted on each arm and normally extending perpendicularly relatively to its arm and radially relatively to the segmental stop ring; means to prevent rocking movement of the sensing pawls in one direction from their perpendicular relation to their supporting arms, the cut-out portions lying in line with the outer ends of the sensing pawls only when the indexing wheels are clear; means operable by said carriage shifting means to rock the universal shaft in a direction to advance the sensing pawls towards the segmental stop rings, the unmutilated portions of the segmental stop rings capable of arresting the sensing pawls and preventing effective operation of the carriage shifting means, said sensing pawls, when the cut-out portions are in line therewith, entering the cut-out portions to complete their advance and enable the efiective operation of the carriage shifting means.

TORAJIRO OHMOTO.

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