US2597488A - Auxiliary tens-transfer control - Google Patents

Description

May 20, 1952 G. w. HOPKINS ETAL 2,597,488

AUXILIARY TENS-TRANSFER CONTROL MECHANISM Filed April 21, 1949 5 Sheets-Sheet 3 74* Q 0 so GD I23 INVENTORS GEORGE- W. Horxms BY Jon E. GRoaL May 20, 1952 Filed April 21, 1949 G. W. HOPKINS ETAL AUXILIARY TENS-TRANSFER CONTROL MECHANISM 5 Sheets-Sheet 4 s9 9 9 m 9. 9 g L" N I INVENTORS GEORGE W. Hopxms BY Jon E.Gaos\.'

y 20, 1952 G. w. HOPKINS ETAL 2,597,488

AUXILIARY TENS-TRANSFER CONTROL MECHANISM Filed April 21, 1949 5 Sheets-Sheet 5 m IO? FIE-E INVENTORS GEORGE- W. HOPKINS BY Jon EGRoBL Patented May 20, 1952 AUXILIARY TENS-TRANSFER CONTROL MECHANISM George W. Hopkins, San Leandro, and Jon E.

Grobl, Oakland, Calif., assignors to Friden Calculating Machine 00., Inc., a corporation of California Application April 21, 1949, Serial No. 88,744

19 Claims.

This invention relates to calculating machines and is more particularly concerned with a full capacity carry-over mechanism for the registers of such machines.

In calculating machines of the type disclosed in Patent No. 2,229,889, issued to Carl M. F. Friden, on January 28, 1941, a power operated transfer mechanism is commonly provided which is situated in the main body portion of the machine and therefore is able to cooperate only with those orders of the shiftable register which are located within the confines of the machine frame. Those orders of the register which extend to the left of the machine and beyond the limits of the stationary framework of the machine are normally dormant and cannot be acted upon either by the value-entering mechanism or by the transfer mechanism until the carriage is shifted to the right to a position where they will be located in cooperative relationship with the entering mechanism and the transfer mechanism. However, in calculations involving very large numbers, it sometimes occurs that a carry from one order to the next higher order must be effected in those orders of the register which lie beyond the reach of the transfer mechanism of the machine and, hence, the carry will not go through as required. In the past, it has been customary to provide a warning device, such as a bell, for producing a warning signal whenever the highest order register wheel to receive a transfer from the conventional transfer mechanism passes through the transfer point. In this way, the operator will be apprised of the fact that a transfer has been lost and he may then correct this condition by manually turning an extra unit into the appropriate register wheel.

In accordance with the present invention, the need for this type of manipulation is eliminated through the provision of an auxiliary transfer mechanism for those orders of the register which lie to the left of the conventional transfer mechanism when the register is in its normal or leftmost position. Hence, transfers from one order of, the register throughout the entire capacity of the register and the warning device of the type mentioned above may be dispensed with.

Accordingly, it is an object of the present invention to provide a complete carry-over mechanism for calculating machines of the type employing a shiftable register carriage.

Another object of the invention is to provide an auxiliarytransier mechanism for those orders of the registerwhichlie beyondthe active to the next will be effected range of the conventional transfer mechanism when the carriage is in its normal, or leftmost, position.

Another object of the invention is to provide a geared type of auxiliary transfer mechanism for the higher order wheels of a register mounted on a shiitable carriage, said transfer mechanism being mounted on the carriage for movement with the register.

Another object of the invention is to provide means for disabling the auxiliary transfer mechanism either between individual orders of the register or between all orders thereof served by the auxiliary transfer mechanism.

Another object of the invention is to provide a disabling means for the auxiliary transfer mechanism which comprises individually displaceable coupling gears which serve to enable or disable the transfer of a unit from one order to the next and which remain in mesh at all times with a set of cooperating transfer gears.

Another object of the invention is to provide means for enabling each coupling gear to be individually adjusted with respect to the transfer gear and transfer tooth with which it cooperates.

Another object of the invention is to provide means cooperating with the register resetting means for disabling the auxiliary transfer mechanism in all orders of the register served thereby.

Other objects and advantages will become apparent from the following description of a particular embodiment of the invention as illustrated in the accompanying drawings, in which:

Figure 1 is a fragmentary longitudinal sectional view showing the selection, actuating and transfer mechanisms of a well-known type of calculating machine.

Figure 2 is a plan view of the left-hand end of the shiftable register carriage.

Figure 3 is a sectional view taken along the line 3-3 in Figure 2.

Figure 4 is a sectional view taken along the line 4-4 in Figure 3.

Figure 5 is a diagrammatic perspective view showing the principal elements of the auxiliary transfer mechanism.

Figure 6 is a sectional view taken along the line 6-6 in Figure 1.

General description of basic machine In the accompanying drawings, the invention is shown as applied to a calculating machine of the type disclosed in U. S. Patent No. 2,229,889, supra. In this machine, amounts to be entered in. the register are first set up on a keyboard provided with a plurality of amount keys (Figure 1) which are mounted for substantially vertical sliding movement in the framework of the machine by means of a pair of elongated slots 2| formed in each keystem through which pass a pair of through-rods 22 which are supported at either end in the framework of the machine. The keystems 28 are provided with latching notches 23 which are adapted to cooperate with a latch slide 24 so as to hold down any key which has been depressed against the urgency of a suitable return spring (not shown). At its lower end, each key stem 20 is provided with a stud 25 which lies above an inclined face 26 provided on a selection bar 21 which is mounted for endwise shifting movement in the machine by means of a pair of pivoted links 28 (only one shown). Two selector bars 21 are provided for each row of amount keys, one bar being provided with inclined faces 25 arranged to cooperate with the studs 25 on the l to 5 keys, while the other bar 2'! is provided with inclined faces 26 cooperating with studs 25 on the 6 to 9 keys. Differential movement of the selector bars is obtained .by varying the angle of inclination of the inclined faces 25, whereby a selector gear 29, operatively connected with the rear end of each of the selector bars, will be differentially positioned along a square shaft 30 which is journalled at its forward end in a cross bar 3| extending between the right side frame (not shown) and the left side frame 32 of the machine. At its rear end, the shaft 30 is journalled in a cross bar 33 which, like the bar 3|, is supported between the side frames of the machine. Each selector gear 29 is provided with ten teeth and is adapted to be rotated by the differentially stepped teeth 34 provided on an actuator drum 35 secured to an actuator shaft 36 which is journalled at its forward end in the cross bar 3| and at its rearward end in a cross bar 31 supported by the framework of the machine. Secured to the forward end of the shaft 36 is a bevel gear 38 which meshes with a similar bevel gear 39 secured to a transverse power shaft 40 journalled at either end in the machine side frames.

As fully shown and described in the abovementioned patent, the calculating machine is provided with an electric driving motor which is adapted to drive the power shaft 40 in a cyclic manner by means of a suitable clutch mechanism. Hence, the actuator shafts 38 will be given cycles of operation and will thereby cause the square shafts 30 to be rotated through one to nine steps of movement in accordance with the value of the key depressed.

Immediately behind the drum 35, on the shaft 36, is a second actuator drum 4| which, like the drum 35, is provided with differentially stepped teeth 42 which are arranged to cooperate with a second pair of selector gears (not shown) which are settable from a second row of amount keys in a manner similar to that employed in connection with the gears 29. Hence, for each bank of the machine, there is provided two selector bars 27, two selector gears 29 and one actuator drum for operating the selector gears. Inasmuch as two selector drums are provided on each actuator shaft 35, there need be only half as many actuator shafts as there are banks of keys.

Slideably, but non-rotatably, mounted on the rear end of each square shaft 30 is a spool on the forward end of which is mounted a tentoothed add gear 5|, and on the rear end of which is mounted a ten-toothed subtract gear 52. Lying in the space between the gears 5| and 52 is a transverse ball, or gate, 53 which extends across the machine and is supported at each end by arms 54 (only one shown) which are secured to a gate shaft 55 which is journalled at either end in the side frames of the machine. As described in Patent No. 2,229,889, the gate shaft 55 may be rocked either clockwise or counterclockwise so as to move either the add gear 5| or the subtract gear 52 into mesh with a ten-toothed gear 56 which is fastened on the lower end of a dial shaft 51 which is journalled at its upper and lower ends in suitable bearings provided in a carriage frame bar 58. Secured to the upper end of each shaft 51 is a numeral wheel 59 which is viewable through an aperture 60 provided in a carriage cover 5|. Surmounting each numeral wheel is a twirler knob 68 by means of which the numeral wheel may be manually set to any desired position.

Secured to either end of the frame bar 58 is a carriage end frame 62 (Figure 2) (only one shown), which end frames are connected together at their forward ends by means of a guide rail 63. The frame bar 58, end frames 52 and guide rail 63 comprise the main framework of the shiftable register carriage which is arranged for endwise shifting movement on the machine frame. For this purpose, the cross bar 33 (Figure 1) has secured thereto a bearing rail 64 which lies beneath a lip 65 formed on the frame bar 58 and thereby serves as a guide and a support for the rear end of the shiftable carriage. The guide rail 63, which extends across the forward part of the carriage, is supported and guided by a plurality of guide rolls 65 which are rotatably journalled on a cross bar 61 which is secured at either end to the machine side frames. Hence, the carriage and the numeral wheels 59 of the accumulator, or register, may be shifted relative to the spools 50 so as to change the ordinal relationship between the numeral wheels and the various orders of the actuating mechanism mounted in the frame of the machine. When the gate 53 is in its neutral position, as shown in Figure 1, ordinal shifting movements of the carriage may be effected without interference on the part of the add-subtract gears 5| and 52 since, in this position of the gate, the gears 56 on the dial shafts 51 are free to move through the space existin between the add-subtract gears.

Means may be provided, as shown and described in U. S. Patent No. 2,294,083, issued to Carl M. Friden on August 25, 1942, for shifting the carriage in either direction from one ordinal position to another by power driven means controlled either by manually operable keys or by certain functional control mechanisms which are customarily incorporated in machines of this character.

Secured to each dial shaft 51, just above the gear 58, is a transfer cam II which cooperates with a transfer lever 12 which is pivotally mounted in the frame bar 58 by means of a stud 13 which is secured to the transfer lever and journalled in a bore provided in the frame bar. As shown in Figure 6, each transfer lever 12 is provided with a formed-over ear 14 which lies between a pair of flanges (Figure 1) formed 3 on a hub 15 of a transfer gear I? in the next -higher order which is slideably, but non-rotatably, mounted on each of the square shafts 35.

The transfer gears 11 are each provided with ten teeth and are each adapted to cooperate with a single tooth 18 formed on each of a plurality of transfer actuators is mounted on the actuator shafts 38. The transfer gears are yieldably maintained in either their rearward, or inactive, positions Orin their forward, or active, positions by means of detent pins 88 which are slideably supported between the cross bar 31 and an auxiliary cross bar 81. Each pin 80 is provided with a pair of flanges 10 which embrace the rear flange 15 of its associated transfer gear so as to cause the pin 80 to partake of the sliding movements of the transfer gear. The pins 80 are suitably detented in either their forward or rearward positions by means of spring-pressed balls (not shown) mounted in the cross bar 8|, which balls are adapted to engage with notches formed in the pins 80.

It will be seen from the foregoing description that each time a numeral wheel 59 passes from 9 to or from 0 to 9, the cam 1| on the dial shaft 51 will oscillate its associated transfer lever 12 and cause the transfer gear 11 in the next higher order to be moved forward on the square shaft 30 where it will lie in the path of the single transfer tooth 18. The gear 11 will be maintained in its forward position by means of the detent pin 80 until after the gear has been rotated one tooth space by the tooth 18, whereupon the gear will be returned to its rearward, or inactive, position by means of a restore cam 82 mounted on the actuator shaft 38. The mechanism just described, consisting of the transfer cams 1 I, transfer levers 12, transfer gears 11 and transfer actuator teeth 18, comprises what will hereinafter be referred to as the conventional, or main transfenmechanism of the machine.

Machines of the type presently being described are generally provided with six actuator shafts 36 and twelve square shafts 3i] so that the twelfth numeral wheel 59 from the right-hand end of the register is the highest order wheel to receive transfers from the main transfer mechanism. Hence, inasmuch as the main transfer mechanism is supported by the framework of the machine and is contained in the space between the right and left side frames of the machine when the register carriage is in its leftmost or normal position, the first twelve orders of the register may be considered to be the inboard orders thereof, whereas all higher orders, for example, the thirteenth to twenty-first orders, may be considered to be the outboard orders of the register.

Means is provided for simultaneously resetting all of the numeral wheels 59 to their zero positions and for this purpose each dial shaft 51 is provided with a mutilated gear 83 which is adapted to cooperate with a resetting rack 84 mounted for longitudinal sliding movement within the frame bar 58. This resetting mechanism is of conventional design and is similar to that shown and described in Patent No. 2,294,083, supra, and, as therein described, may be either manually operated by means of a resetting knob located on the righthand end of the carriage, or may be operated by power derived from one of the actuator shafts 3 5. Also, as described in this patent, overthrow of the numeral wheels during resetting operations is prevented by means of a lock bar 85 (Figure 2) which is mounted for longitudinal sliding movement on the top surface of the frame bar 55 and is provided with lock teeth 86 which are adapted to engage with zero stops secured-to the dial shafts 51 when the numeral wheels reach their zero positions. The lock slide 85 is shown in its inactive position in Figure 2, in which the teeth 86 lie to the left of the stops on the dial shafts. However, during resetting operations, the slide 85 is moved to the right against the urgency of a spring 81 so as to move the teeth 88 into position to engage with the stops on the dial shafts and thereby prevent overthrow of the numeral wheels beyond their zero positions.

As shown in Figure 1 of the drawin s, the register carriage has mounted therein a plurality of numeral wheels 88 which serve to indicate the number of cycles performed by the machine in any of the various ordinal positions of the carriage, these wheels being viewable through a Window 89 provided in the cover SI of the carriage. Each numeral wheel 88 is mounted on a horizontal shaft 98 which is journalled at its ends in the frame bar 58 and the forward guide rail 63. Also mounted on each of the shafts 98 is an actuator gear 9| which cooperates with arevolutions counter actuator 92 which is journalled in the framework of the machine and serves to rotate the numeral wheel 88 located in cooperative relationship with the lowest order of the actuator 92 one step on each cycle of operation of the machine, and also to perform the necessary transferring operations in the higher order wheels 88. This mechanism is of conventional design and reference may be had to Patent No. 2,229,889 for a detailed description thereof.

Auxiliary transfer mechanism In order to extend the transferring of units from one order of the register to the next higher order thereof beyond the twelfth numeral wheel 59, the machine presently being described is provided with an auxiliary transfer mechanism which enables transfers to be effected throughout the entire capacity of the register. As shown in Figures 1, 4 and 5, the dial shafts 51 of the twelfth to twenty-first numeral wheels from the right are provided with wide-faced ten-toothed gears I00 and I!!! which are located in a staggered relationship on alternate dial shafts as best shown in Figures 4 and 5. As shown in these figures, the wide-faced gears I are mounted on the dial shafts 51 in the even orders of the register while the gears l0l are mounted on the dial shafts in the odd orders thereof. In addition to the gears I00 and [01, the dial shafts also carry transfer teeth I82 and I03 which serve to provide the transfer impulses from each register wheel to the next higher order register wheel each time the lower order wheel passes from 0" to 9 or from 9 to 0. The transferring impulses provided by these teeth are transmitted to the next higher order wheels by means of coupling gears I04 and H35 which mesh with the wide-faced gears I80 and HJI and are also located in cooperative relationship with respect to the transfer teeth I02 and H33. In Figures 4 and 5, the dial shafts 51 are shown in their zero positions, in which case the transfer teeth lie in contact with a tooth on their associated coupling gears so that, if any one of the lower order numeral wheels is rotated clockwise one tooth space from its zero position to its 9- position, its asso ciated coupling gear will likewise be rotated one tooth space so as to rotate the adjacent higher order numeral wheel clockwise through one tooth space. This will in turn cause the transfer tooth associated therewith to operate its associated c pl s sear...and rotate the-nexthigher order wheel from to 9, and so on. The same type of operation will take place when the numeral wheels all stand at 9, in which case each transfer tooth will lie on the opposite side of the tooth on its associated coupling gear and counterclockwise movement of any numeral wheel in passing from 9 to 0 will cause its associated coupling gear to be rotated one step, thereby turning the next higher order dial shaft one step counterclockwise so that its transfer tooth will send an impulse into the next higher order wheel, and so forth. Hence, by means of this arrangement, the transfer of a unit from one order wheel to the next will be effected in accordance with the requirements of the calculation throughout the entire capacity of the register.

Disabling of the auriZiary transfer mechanism As shown in Figures 4 and 5, the coupling gears I04 and I are rotatably journalled on bearing studs 98 and 99 secured to the ends of carrier arms I06, the gears being alternately journalled on the upper side and lower sides of the arms I06. Each carrier arm is secured at its opposite end to a pilot member I01 having a square upper portion I08 (Figures 3 and 4) and a round lower portion I09 (Figure 6). The square portion I08 passes through a corresponding square guide opening provided in an upper guide plate IIO which is secured to the frame bar 58, while the lower portion I09 of each pilot member passes through a circular guide aperture provided in a bushing III mounted in a lower guide plate II2 fastened to the frame bar. Hence, in this manner, each pilot member I0! is supported for vertical sliding movement between the guide plates and is prevented from rotation by means of the square cross section of the upper portion I08 of each pilot member. The carrier arms I06 are each provided with a hub I I5 which is bored for a snug fit on the round portion I09 of its associated pilot member and is arranged to be rigidly secured to the member by means of a locating pin I I3.

In order to insure the accurate positioning of each coupling gear I04, I05 with respect to its associated wide-faced gear I00, [DI and transfer tooth I02, I03, the hubs I are provided with set screws (not shown) for enabling each carrier arm I08 to be adjusted radially on its associated pilot member I0! until it is in its correct position, whereupon the set screw may be tightened so as to temporarily secure the coupling arm to the pilot member. After each of the carrier arms has been thus adjusted and secured by means of the set screws, the holes for the pins II3 may be bored through the hubs and pilot members and the pins driven home, after which the set screws no longer perform any useful function. Each coupling gear will thus be located in its individually adjusted position and will be maintained in this position by means of the square cross section provided on the upper ends of each of the pilot members.

As best shown in Figure 3, the pilot members I01 are normally maintained in their lower positions by means of compression springs II4 encircling each of the pilot members and pressed between the top guide plate H0 and each of the carrier arms I06. The coupling gears are thereby normally maintained in their lower positions where they lie in the plane of their associated transfer teeth I02 and I03, whereby the auxiliary transfer mechanism is normally effective to cause the transfer of a unit from one order to the next each, time a muneral wheel passesthroughthe transfer point. Means is provided, however, for shifting the pilot members upwardly against the force of the springs II4 so as to disable the auxiliary transfer mechanism and prevent the transfer of a unit from one order of the register to the next. For this purpose, there is provided on the lower end of each pilot member a. roller I20 which is adapted to engage an inclined lip I2I provided on a stationary disabling rail I22 which is secured to a cross bar I23 of the ma-- chine frame. The rail and its associated lip III are so positioned as to earn up each pilot member I01 as its associated numeral wheel moves from an outboard position to an inboard position during shifting of the carriage, thereby disabling the auxiliary transfer mechanism, order by order, as the register wheels move inboard of the machine. In other words, when the register carriage is located in its normal, or extreme lefthand position, the numeral wheels from the thirteenth to the twenty-first order of the register will lie outboard of the main transfer mechanism and the pilot members will all be held in their lower positions by means of the springs I I4. However, if the carriage is shifted one ordinal space to the right, the right-hand pilot member will be cammed upwardly by the rail I22 and its associated coupling gear I04 will be moved upwardly out of the path of its associated transfer tooth I02 so as to prevent a transfer from being effected by the auxiliary transfer mechanism between these two register wheels. This is necessary inasmuch as the main transfer mechanism will now be effective to cause transfers to take place between these two wheels of the register and it is therefore undesirable to have the auxiliary transfer mechanism active in this case. This is due to the fact that the latter mechanism is of the simultaneous type, whereas the main transfer mechanism is of the delayed, or successive type and if the auxiliary mechanism were not disabled, two units would be transferred from one order of the register to the next instead of one unit, as desired.

It is also to be noted that when the coupling gear I04 is moved upwardly out of the path of its transfer tooth I02, the coupling gear is enabled to remain in mesh with the wide-faced gear IOI so that while the transfer mechanism is disabled, the coupling gear will be held against rotation by the wide-faced gear IOI so that when the carriage is again shifted to its extreme left-hand position and the coupling gear is returned to its effective position by the spring II4, the gear I04 will be located in proper meshing relationship with respect to the transfer tooth I02.

In this way, each coupling gear will be elevated by the operation of the disabling rail I22 as its associated register wheel moves inboard and will again be lowered to its active position when the register wheel moves from an inboard position to an outboard position.

Disabling of auxiliary transfer mechanism during resetting operations up by the coupling gears being rotated by higher order wheels still in the process of being reseti and thereby cause their associated wheels to be rotated through the transfer point from to 9. Accordingly, the upper portions I08 of the pilot members I0! are slotted in a transverse direction so as to receive a disabling slide I23 (Figures 2 and 3) which is provided with a plurality of inclined cam faces I24. Each cam face I23 is adapted to cooperate with a follower roller I25 journalled on a pin I26 passing through the upper portion I08 of each pilot member. The slide I23 is provided at its left-hand end with a formed-over ear I2'I to which is secured a stud I28 which'lies in contact with the forward arm I29 of a lever I30 which is pivotally mounted on a screw I3l fastened to the frame bar 58. This lever is provided with a rearwardly extending arm I32 which lies in contact with a stud I33 carried by the lock slide 85 of the resetting mechanism. Hence, when this slide is moved toward the right during resetting operations, the lever I30 will be rotated clockwise, as viewed in Figure 2, and the disabling slide I23 and cam faces I24 will be moved toward the left so as to cause all of the pilot members to be lifted, whereby the coupling gears I04 and I will all be moved out of the path of their associated transfer teeth I02 and I03. Hence, the transferring connection from one order of the register to the next will be interrupted and the register Wheels may be independently reset to zero without any interference on the part of the auxiliary transfer mechanism.

Having thus described our invention, what we claim as new and desire to secure by Letters Patent is:

1. In a calculating machine having a frame, a carriage mounted for endwise shifting movement on said frame, a plurality of ordinally arranged register wheels J'ournalled in said carriage, certain of said wheels lying inboard of said frame and others of said wheels lying outboard thereof when said carriage is in its end position, and means for resetting said register wheels to zero including a member mounted for movement on said carriage incident to a resetting operation, the combination of a main transfer mechanism situated within said frame for effecting transfers in the inboard register wheels; an auxiliary transfer mechanism mounted on said carriage for eifecting transfers in the outboard register wheels, said last-named mechanism comprising a transfer tooth connected for movement with the highest order inboard wheel, a transfer gear and a transfer tooth connected for movement with each of the outboard register wheels, and a series of coupling gears for operatively connecting each transfer tooth with the transfer gear in the next higher order of the register so as to enablethe transfer of a unit from one order to the next to be effected through the entire array of register wheels; means operable when the carriage is moved from its end position for preventing operation of one of said transfer mechanism with respect to register wheels moved inboard of said frame by such movement of the carriage; and means operable by said member during a resetting operation for disabling said series of coupling gears to prevent their connecting said transfer teeth with the transfer gears in adjacent orders. a a

2. A calculating machine structure as defined in claim 1 including means for accurately adjusting the positions of said transfer gears and transfer teeth relative to said series of coupling gears.

a 3. ;In acalculating machine having a frame, a carriage mounted for endwise shifting movement on said frame, a plurality of ordinally arranged register wheels in said carriage, certain of said wheels lyin inboard of said frame and others of said wheels lying outboard thereofwhen the carriage is in its end position, and means for resetting said registerwheels to zero including a member mounted for movement on said carriage incident to a resetting operation, the combination of amain transfer mechanism situated within said frame for effecting transfers in the inboard register wheels; an auxiliary transfer mechanism mounted on said carriage for effecting transfers in the outboard register wheels, said last-named mechanism including a transfer tooth connected for movement with the highest order inboard wheel, a transfer gear and a transfer tooth connected for movement with each of the outboard register wheels, a series of coupling gears for operatively connecting each transfer tooth with the transfer gear in the next higher order of the register, and shifting means for providing relative axial shifting movement between each gear of said series of coupling gears and its related transfer tooth and transfer gear so as to disable the transfer of a unit from one order of the outboard register wheels to the next; means operable whenthe carriage is moved from its end position for operating the shiftin means associated with register Wheels moved inboard of said frame by such movement of the carriage; andmeans operable by said member during a resetting operation for disabling said series of coupling gears to prevent their connecting said transfer teeth with the transfer gears in adjacent orders.

4. A calculating machine structure as defined in claim 3 in which the transfer gears are of sufficient thickness as to enable said transfer teeth and said series of coupling gears to be disengaged from one another by relative axial shifting movement without thereby causing said transfer gears to be disengaged from said series of coupling gears.

I 5. A calculating machine structure as defined in claim 3 including a device for causing each gear of said series of coupling gears to be shifted axially as its associated higher order register Wheel moves inboard of said frame so as to disable the auxiliary transfer mechanism with respect to all register wheels lyin inboard of said frame.

6. In a calculating machine having a frame, a main driving mechanism located within said frame, a main transfer mechanism adapted to be actuated by said main driving mechanism, a register carriage mounted on said frame for ordinal shifting movements thereon, a plurality of ordinally arranged register wheels in said carriage, certain of said wheels lying inboard of said frame and within the range of said main transfer mechanism and others of said wheels lyin outboard of said frame and outside the range of said main transfer mechanism, and means for resetting said register wheels to zero including a member mounted for movement on said carriage incident to a resetting operation, the combination of a transfer tooth carried by the highest order inboard wheel and each of the outboard wheels; a wide-faced gear carried by each of the outboard wheels and. lying opposite the transfer tooth carried by the next lower order wheel; a coupling gear operatively associated with each transfer tooth, said coupling gears each meshing with the wide-faced gear carried by the next higher order register wheel; means for individually supporting said coupling gears for displacement in an axial direction; means for shifting each supporting means so as to move its related gear out of operative position with respect to its associated transfer tooth while maintaining the gear in mesh with the wide-faced gear; means operable when the carriage is moved from its end position for preventing operation of one of said transfer mechanisms with respect to register wheels moved inboard of said frame by such movement of the carriage; and means for operating said shifting means in response to movement of said member during a resetting operation so as to interrupt the transfer normally transmitted from one register wheel to the next through said coupling gear.

7. A calculating machine structure as defined in claim 6 wherein said supporting means includes a plurality of pilot members mounted in said carriage for sliding movement in a direction parallel to the axis of rotation of said register wheels, a carrier arm secured to each of said members, and a bearing element on each arm for rotatably supporting one of said coupling gears.

8. The invention as defined in claim 7 wherein each of said pilot members is positively restrained against rotary movement and said carrier arms are rigidly secured to said pilot members.

9. The invention as defined in claim 8 which includes mating bearing surfaces provided on said pilot members and said carrier arms so as to enable each arm to be adjusted to a given radial position on its associated pilot member, and means for rigidly maintaining said arms in their adjusted positions on said members.

10. In a calculating machine having a frame, a main driving mechanism located within said frame, a main transfer mechanism adapted to be actuated by said main driving mechanism, a register carriage mounted on said frame for ordinal shifting movements thereon, and a plurality of ordinally arranged register wheels in said carriage, certain of said wheels lying inboard of said frame and within the range of said main transfer mechanism and others of said wheels lying outboard of said frame and outside the range of said main transfer mechanism, the combination of a transfer tooth carried by the highest order inboard wheel and each of the outboard wheels; a wide-faced gear carried by each of the outboard wheels and lying opposite the transfer tooth carried by the next lower order wheel; a coupling gear operatively associated with each transfer tooth, said coupling gears each meshing with the wide-faced gear carried by the next higher order register wheel; means for supporting said coupling gears for displacement in an axial direction, said supporting means including a plurality of pilot members supported in said carriage for sliding movement in a direction parallel to the axis of rotation of said register wheels, a carrier arm secured to each of said members, and a bearing element on each arm for rotatably supporting one of said coupling gears; means operable when the carriage is moved from its end position for operating pilot members associated with register wheels moved inboard of said frame by such movement of the carriage; means for resetting said register wheels to a zero registering position; a common disabling member for all of said pilot members; and means operatively connected with said resetting means for operating said disabling member whereby said coupling gears will all be shifted out of operative position and the transfer of a unit from one outboard order wheel to the next will be prevented during resetting of the register wheels.

11. In a calculating machine having a frame, a carriage mounted for endwise shifting movement on said frame, and a plurality of ordinally arranged register wheels journalled in said carriage, certain of said wheels lying inboard of said frame and other of said wheels lying outboard thereof when said carriage is in its end position, the combination of a main transfer mechanism situated within said frame for effecting transfers in the inboard register wheels; an auxiliary transfer mechanism mounted on said carriage for effecting transfers in the outboard register wheels, said last-named mechanism comprising a transfer tooth connected for movement with the highest order inboard wheel, a transfer gear and a transfer tooth connected for movement wtih each of the outboard register wheels, a series of coupling gears for operatively connecting each transfer tooth with the transfer gear in the next higher order of the register so as to enable the transfer of a unit from one order to the next to be effected throughout the entire array of register wheels, a plurality of bearing members respectively mounting said coupling gears for rotation about individual axes parallel to the axes of rotation of said register wheels, a plurality of carrier members respectively mounting said bearing members, and means mounting said carrier members for linear movement parallel to the axes of said coupling gears and said register gears for selectively enabling and disabling the connections of said transfer teeth to said transfer gears through said coupling gears; and means operable when the carriage is moved from its end position for operating carrier members associated with register wheels moved inboard of said frame by such movement of the carriage.

12. A calculating machine structure as set forth in claim 11 in which the carrier members are provided respectively with cam followers, in combination with a longitudinally reciprocable slide formed with cam faces cooperable respectively with said followers for shifting the carrier members and the coupling gears to disable the connections between said transfer teeth and said transfer gears.

13. A calculating machine structure as set forth in claim 12 in which the carrier members are formed with aligned slots through which said slide extends, the cam followers extending across the respective slots.

14. A calculating machine structure as set forth in claim 11 including means for resetting said register wheels to zero, and means responsive to operation of said resetting means for operating said carrier members for shifting said coupling gears along their axes to disable the connections of said transfer teeth to said transfer gears.

15. A calculating machine structure as set forth in claim 14 in which the carrier members are provided respectively with cam followers and in which the means responsive to operation of the resetting means comprises a longitudinally reciprocable slide formed with cam faces cooperable respectively with said followers.

16. A calculating machine structure as set forth in claim 15 in which the carrier members are formed with aligned slots through which slide extends, the cam followers extending across the respective slots.

17. A calculating machine structure as set forth in claim 11 including spring means urging said carrier members individually in one direction in the line of their linear movement, rollers respectively carried by said carrier members, and a cam rail mounted on the machine frame and being engageable sequentially by said rollers for moving the respective carrier members in the opposite direction in response to carriage shifting.

18. In a calculating machine having a frame, a carriage mounted for endwise shifting movement on said frame, a plurality of ordinally arranged register wheels journalled in said carriage, certain of said wheels lying inboard of said frame and others of said wheels lying outboard thereof when said carriage is in its end position, and means for resetting said register wheels to zero, the combination of a main transfer mechanism situated within said frame for effecting transfers in the inboard register Wheels; an auxiliary transfer mechanism mounted on said carriage for effecting transfers in the outboard register wheels, said last-named mechanism comprising a transfer tooth connected for movement with the highest order inboard wheel, a transfer gear and a transfer tooth connected for movement with each of the outboard register wheels, a series of coupling gears for operatively connecting each transfer tooth with the transfor gear in the next higher order of the register so as to enable the transfer of a unit from one order to the next to be effected throughout the entire array of register wheels, and means mounting said coupling gears for shifting along their respective axes of rotation from the positions in which they are operative to connect the respectively associated transfer teeth and transfer gears to other positions in which they are inoperative for effecting such connection; means for enabling the operation of said resetting means; and means controlled by said enabling means for preventing said coupling gears from being shifted to the positions in which they connect the associated transfer teeth and transfer gears.

19. In a calculating machine having a frame, a

carriage mounted for endwise shifting movement on said frame, a plurality of ordinally arranged register wheels in said carriage, certain of said wheels lying inboard of said frame and others of said wheels lying outboard thereof when the carriage is in an end position, means for clearing said register wheels, and means for enabling the operation of said clearing means, the combination of a main transfer mechanism situated within said frame for effecting transfers in the inboard register wheels; and an auxiliary transfer mechanism mounted on said carriage for effecting transfers in the outboard register wheels, said last-named mechanism including a transfer tooth connected for movement with the highest order inboard wheel, a transfer gear and a transfer tooth connected for movement with each of the outboard register wheels, a series of gears for operatively connecting each transfer tooth with the transfer gear in the next higher order of the register, means for providing relative axial shifting movement between each gear of said series of gears and its related transfer tooth and transfer gear so as to disable the transfer of a unit from one order of the outboard register wheels to the next, and means operated by the enabling means for so relatively shifting said gears and teeth.

, GEORGE W. HOPKINS.

JON E. GROBL.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,089,770 Suter et a1 Aug. 10, 1937 2,283,655 Stahl May 19, 1942 2,403,069 Friden et al July 2, 1946 FOREIGN PATENTS Number Country Date 274,830 Germany June 3, 1914

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