US3093304A - Electrically powered keyboard and transfer mechanism for ten key adding or calculating machine - Google Patents

Description

June 1 1 R. M. STARRETT ELECTRICALLY POWERED KEYBOARD AND TRANSFER MECHANISM FOR TEN KEY ADDING OR CALCULATING MACHINE '6 Sheets-Sheet 1 Filed May 7, 1958 W wm x E EEEEEEEWE E E INVENTOR ATTORNEYS June 11, 1963 ELECTRICALLY POWERED KEYBOARD AND TRANSFER MECHANISM FOR TEN KEY ADDING 0R CALCULATING MACHINE Filed May 7, 1958 R. M. STARRETT 3,093,304

6 Sheets-Sheet 2 ATTORNEYS.

June 11, 1963 R. M. STARRETT 3,093,304

ELECTRICALLY POWERED KEYBOARD AND TRANSFER MECHANISM FOR TEN KEY ADDING 0R CALCULATING MACHINE 6 Sheets-Sheet 5 Filed May 7, 1958 INVENTOR M BY M W ATTORNEYS June 11, 1963 R. M. STARRETT 3,093,304

ELECTRICALLY POWERED KEYBOARD AND TRANSFER MECHANISM FOR TEN KEY ADDING OR CALCULATING MACHINE Filed May '7, 1958 6 Sheets-Sheet 4 Zia ATTO R N EYs,

June 11, 1963 R. M. STARRETT ELECTRICALLY POWERED KEYBOARD AND TRANSFER MECHANISM FOR TEN KEY ADDING OR CALCULATING MACHINE 6 Sheets-Sheet 5 Filed May 7, 1958 INVENTOR g- ATTORNEYS June 11, 1963 R. M. STARRETT 3,

ELECTRICALLY POWERED KEYBOARD AND TRANSFER MECHANISM FOR TEN KEY ADDING 0R CALCULATING MACHINE Filed May 7, 1958 6 Sheets-Sheet 6 INVENTOR ATTORNEYS,

nited tats This invention relates to an improved calculating machine, and more particularly relates to a novel construction and mode of operation for a ten key adding machine.

There are several inherent factors which limit the operational speed and efliciency of a conventional type ten key adding machine. For example, when a machine operator successively depresses the amount keys of the machine, the various settable stop means, or the stop pins of the so-called pin box, will be indexed to operative positions which lie in the path of movement of the respective accumulator-actuator racks of the machine. In that there is a direct mechanical connection between said keys and stop pins it will be apparent that said operator, in addition to manually operating the various keyboard linkages, must also supply all the energy required to operate the stop pin setting mechanism. Although the mechanical energy required to successively operate said mechanism and linkages is relatively small, considerable hand and finger fatigue may result where the machine operator is required to continuously repeat these operations for long periods of time.

Another inherent factor limiting the operational efficiency of a conventional type ten key adding machine relates to the time lapse required between the actuation of the motor bar of the machine, after having initially actuated the amount keys, and the earliest permissible subsequent actuation of the amount keys of the machine. Here, when an amount is being entered into the accumulators the pin box of the conventional type ten key adding machine will not be restored to its normal position to enable actuation of the amount keys until very near the end of the machine add cycle. Under these conditions when the motor bar of the machine is depressed the machine operator cannot subsequently depress any of the amount keys of the machine until the entry of the previous amount into the machine accumulator has been completed. This loss in permissible keyboard operating time may be relatively slight when only a few amount entries are to be entered into the machine; however, if the adding machine is to be operated for extended periods the losses in work and machine operating time may become very appreciable. Furthermore, due to said loss in permissible keyboard operating time, conventional type ten key adding machines do not lend themselves for use in high speed data processing systems.

Another inherent disadvantage of the conventional ten key type adding machine is that when many consecutive zeroes appear in the amount number which is to be entered into the machine, the zero amount key must be successively operated in order to set up the desired number of zeroes in the Various order rows of said pin box. Because of this repetitious operation, a longer time is required to set up such an amount number on a ten key adding machine than is required for a similar entry into an adding machine having a full keyboard.

One object of the instant invention is to provide an improved ten key adding machine which is relatively simple in construction but eflicient and very rapid in operation.

Another object of the invention is to provide an improved construction for a calculating machine having an electrically power driven means for successively setting the various stop means to operative positions for determining the extent of movement of the accumulator actuator means.

atent fi fifi i Patented June 11, 1963 Another object of the invention is to provide an improved construction for a ten key calculating machine whereby the successive indexing of the settable stop means of the machine is effected by means of a single electrically power driven unit which is controlled by the operation of the amount keys of the machine.

Another object of the invention is to provide a novel construction for a ten key adding machine whereby a single electrically power driven rack means is actuated so as to successively index a plurality of settable stop wheels that control the extent of movement of a set of accumulator actuator gears.

Another object of the invention is to provide an improved construction for a ten key adding machine whereby an amount may be set up on the keyboard before completion of the immediately preceding machine cycle.

Another object of the instant invention is to provide an improved construction for a ten key calculating machine whereby the settable stop means may he slid to two longitudinally spaced operative positions during a machine cycle: said stop means being in operative engagement with the stop setting mechanism of the machine in one of said positions to receive amounts from a keyboard, and said stop means being in operative engagement with the accumulator actuator means in the other of said positions to transfer amounts thereto.

Still another object of the invention is to provide a novel construction for a ten key adding machine wherein a plurality of settable stop wheels may controllably engage the accumulator actuator gears during the first half of the accumulating :part of the machine cycle, and wherein said stop wheels may be moved into operative engagement with the stop wheel setting mechanism and a new amount set up therein during the last half of said cycle.

A further object of the invention is to provide a novel means for setting up a plurality of successive zeroes in the settable stop means of a ten key adding machine.

Another object is to provide an electrically powered keyboard for ten key adding or calculating machines and an improved and simplified means controlled thereby for operating the adding or calculating mechanism and doing away with the usual movable pin basket and associated racks, and greatly reducing the number of parts required.

It is also an object to provide a construction whereby the usually ten amount keys all control one electrically operated unit for setting up the amounts into an electrically power driven indexing series of wheels for transfer into an accumulator section, such, for example, as adding, subtracting, printing and the like.

A particular object is to provide a mechanism whereby at the end of a half cycle of the accumulating part of the machine, amounts can be set up in the keyboard, and the operator therefore does not have to wait for the full cycle of the machine to be completed before again operating the keyboard, thus greatly increasing the speed of operation of the machine.

Another object is to provide a machine of this character in which the mechanism controlled by the keys is electrically operated, and therefore the energy to operate such mechanism does not have to be provided by the operator through the keys, greatly increasing the ease of operation and providing a uniform operation for each of the keys.

A further object is to provide a means whereby the items or numbers set up by depressing the keys can be seen and checked by the operator before being put into the machine, and thus will permit clearing of the item if it involves a mistake before it is put into the machine.

A still further object is to be able to provide a unit controlled by a series of zero keys operating into the same indexing mechanism for the transfer wheels operated by the numbered keys, to shift the transfer wheels 3 for putting into them one or more zeros by operation of a single key.

Other objects of the invention will become apparent as the disclosure progresses.

With the foregoing and other objects in view, I have devised the construction illustrated in the accompanying drawings forming a part of this specification. It is, however, to be understood the invention is not limited to the specific details of construction and arrangement shown, but may embody various changes and modifications within the scope of the invention.

In these drawings:

FIG. 1 is a partial side view and partial longitudinal vertical section of the machine in its initial condition prior to operation;

FIG. 2 is a top plan view thereof with parts broken away;

FIG. 2a is a plan view of a portion of FIG. 1 showing certain parts in a different position to which they are moved during operation and with the numbered dial wheels omitted;

FIG. 3 is a partial side view of the key-controlled mechanism or unit showing it in a different position from that of FIG. 1, namely, one which it occupies during operation;

FIG. 4 is a front view looking from the right of FIG. 3;

FIG. 5 is a partial plan and partial section of the input wheel ratchet mechanism of the device shown on an enlarged scale;

FIG. 6 is a detail side view and partial section of a portion of this ratchet mechanism;

FIG. 7 is a partial section and partial side view of another portion of this ratchet mechanism;

FIG. 8 is a longitudinal section of the elements of the keyboard looking down;

FIG. 9 is a partial side view and partial section of another unit similar to that of FIG. 1 for setting up zeros;

FIG. 10 is a partial plan view and partial section of two units of FIGS. 1 and 9 with the keyboard removed;

FIG. 11 is a side view of the printing and registering mechanism;

FIG. 12 is a side view of a portion thereof showing the parts in another position;

FIG. 13 is a view substantially on line 13-43 of FIG. 2;

FIG. 14 is a vertical section substantially on line 1414 of FIG. 2;

FIG. 15 is a partial elevation and partial section looking from the left of FIG. 14;

FIG. 16 is an elevation taken substantially on line 16--16 of FIG. 2;

FIG. 17 is a view of a portion of FIG. 16 showing parts in a different position;

FIG. 18 is a view looking from the left of FIG. 17, and

FIG. 19 is a view of a portion of FIG. 18 showing parts in a different position.

The machine comprises the electrically power driven setting-up mechanism mounted between laterally spaced upright frame members 1 and 2 for successively setting the various stop means to operative positions for determining the extent of movement of the accumulator actuator means, and an accumulator assembly having a printing mechanism mounted between the laterally spaced upright frame members 3 and 4. Mounted on the top of the frame members 1 and 2 is a keyboard 5 comprising a series of keys 6 numbered from 0 to 9, as indicated in FIGS. 2 and 8. Each key is mounted on a vertically movable flat stem 7 guided in similarly shaped slots in the vertically spaced supporting plates 8 and 9 normally held in their upper or normal position by coil springs 11 Mounted in laterally spaced upright bearing members 11 is an operating shaft 12 driven through suitable gearing 13, 14, 15 and 16, FIG. 2, from an electric motor 17. Associated with and mounted on this shaft is an operating unit A. This includes a bearing member 18 mounting a rocking lever 19 on the shaft, and pivoted on this lever at 20 is a pawl 21 adapted .to engage in the notches 22 of the toothed wheel 23 rotated by the shaft 12 counterclockwise, as indicated by the arrow 24, FIG. l1. Connected with the pawl 21 is an arm 25 carrying a stud 26 normally adjacent and in alignment with the lower end 27 of a member 28 pivoted at 29 to an arm 30 pivotally mounted on the under side of the plate 9 at 31 on a downwardly extending lug 32. The arm 28 is normally held against a stop pin 33 on an extension 34 of the lug 32 by a spring 35 connected at its opposite ends 36 and 37 to the arm 30 and the member 28, this stop pin limiting movement of the member 28 to the left as shown in FIG. 1, but permitting it to yield to the right.

Also mounted on the rocking lever 19 is a lever 38 pivoted to this member at 39 and having a short arm 40 in alignment with a stud 41 on an arm 42 connected with the pawl 21. This lever also has an upwardly extending short arm 43 and a lower longer arm 44 the lower end of which is connected at 45 to one end of a spring 46 which at its other end is connected to the stud 41 on the arm 42 of the pawl 21. Movement of arm 44 to the left is limited by stop 44a on member 19. In the upper end of the member 19 is an elongated slot 47 in whiclislides a pin 48 mounted in the end of a connecting link 49, the other end of this link being pivotally connected at 50 to a longitudinally slidable bar 51 guided for limiting longitudinal sliding movement by the transverse bars 52 and 53 that are supported by frame members 1 and 2 and extend through the longitudinal slots 54 and 55 respectively formed in the bar 51. The pin 43 is connected to an arm 56 on the lever 19 by a coil spring 57 tending to shift this pin 48 to the left in the slot 47. A spring 19:: connected to the lower end of lever 19 at 1% and at its other end 190 to frame member 2 tends to swing or turn member 19 clockwise or to the right as viewed in FIG. 1 to return it to and retain it in its normal or retracted position.

The slidable bar 51 is connected by a link 58 to a pivoted curved toothed rack or segment 59 on an arm 66 pivoted to the frame member 2 at 61, and the teeth of this segment meshing with a ratchet gear 62 on a transverse shaft 63. Link 58 is connected to bar 51 at 580 and to segment 59 at 5811. In the hub of this gear 62 is a pawl 64 (FIGS. 5, 6 and 7) normally shifted outwardly by a spring 65 to engage lugs 66 on a ratchet wheel 67 for one-way operation thereof, this wheel being held against rotation in the opposite direction by means of a stop pawl 68 pivoted on the rod 52 and normally held against a toothed wheel 69 secured to the wheel 67, as shown in FIG. 7, by a spring 70 secured at one end to the pawl 68 and at its other end to a pin 71 mounted in one of the frame members. The ratchet wheel 67 operates an input gear wheel 72 through the hub connection 73 (FIG. 5) also mounted on the shaft 63.

Mounted between the plates 8 and 9 is a rod or bail 74 mounted at its opposite ends on supporting levers 75 and 76 (FIG. 8) pivotally mounted respectively at 77 and 78 to permit the rod or bail to swing downwardly. This bail extends through an elongated sl ot 7a in each of the stems 7 of the center row of keys 6 and lateral extensions 79 and 80 of the two side rows of keys, so that on depression of any key this bail will be depressed by the upper end of the slot of that key without affecting any other ke and the lever 76 operated by this bail carries pivoted to it a downwardly extending member 81 guided in plate 9 engaging the top of the free end of the arm 30, so that depression of the bail depresses this arm and the member 28 carried thereby. Depression of any key in the center row carries its lower end through the lower plate 9 into the path of movement of a lug 82 on the top edge of the bar 51 (see FIG. 3) or depression of a key in one of the two side rows of keys will carry a similar extension on the lower side of the corresponding lateral extensions 79 and 811 of the two side rows of keys into the path of this lug 82. A second lug 83 on this bar engages the lower end of a zero (0) key 6a when this key is depressed.

At the rear of this electrically power driven operating unit comprising generally the members 23, 19 and 51, and ratchet driven input gear wheel 72, is an assembly 84 comprising spaced upright members 85 and 85a mounted on a connecting lower member 86 which, as shown in FIG. 2, has a series of ratchet teeth 87 along its front edge meshing with downwardly extending teeth 88 on an indexing wheel 89 mounted to turn on a hearing in the upper end of a supporting member 90. Pivotally mounted above this wheel on an extension 91 (FlG. of the member 90 is a lever 92 (FIG. 10) carrying an indexing pawl 93 pivoted thereto at 94 adapted at its free end to engage the teeth of the indexing wheel 89, as shown in FIG. 10, and held against these teeth by the spring 95. A locking pawl 93a holds indexing wheel 39 against reverse movement, the pawl being retained in the holding position by spring 93b. The free end of lever 92 is connected to the lower portion of the lever 19 by a connecting bar 96 pivotally connected at its opposite ends to the levers 19 and 92, as indicated at 97 and 98 respectively.

As the indexing wheel 89 must be turned only the distance between adjacent teeth, or one step, on each operation by unit A or lever 19 on depression of each digit key 6, and as the member 19 moves different distances for different keys, a stop 92a (FIGS. 1 and 10) is provided to limit forward movement of arm 92 and indexing pawl 93 to one step. This may be mounted on a support 92b pinned to the column 911. Another stop 920 may be provided on this support to limit backward movement of arm 92. Also as lever 19 moves different distances a lost motion connection 96a is provided in connecting bar 96 to permit continued movement of lever 19 after movement of arm 92 is arrested. This may comprise making the connection 96 in two sections 961) and 96c with a rod 96d connected to 9612 and slidable in a lateral lug 96c, and connected at its opposite free end to the free end of a spring on this rod engaging the lug 96a at its opposite end. This spring permits continued movement of lever 19 after movement of arm 92 is stopped. Cooperation of lugs 96g and 96e will insure positive return of arm 92 and indexing pawl 93 to their normal retracted position for operation in the next cycle.

Carried by and adjacent the upper ends of the members 85 and 85a is a transverse shaft 108 on which is mounted a series of transfer gear wheels 1110 which form settable means, one for each of the columns of figures for which the machine is designed. They form a settable stop means to determine the extent of movement of the accumulator actuator means. In the present machine there are shown ten of these wheels or settable means so numbers having up to ten digits can be set up. More or less than this number may be used as desired. Each transfer wheel or settable means 109 has ten teeth and a stop pin 101 (FIGS. 1, 9, 16 and 18) extending laterally from the tenth tooth cooperating with an adjacent tooth 102 of a comb 103- carried by and extending between the members 85 and 85a to limit turning movements of the wheels or settable means 1011. Associated with each wheel 100 is a dial or visible item wheel 104 including a toothed wheel 105 meshing with the wheel 100 and a disc at one side thereof having a rim or dial 106 on which are the digits from 0 to 9. These dial wheels have no effect on operation of wheels 100 but give a visual indication of the number set up in each transfer Wheel 1011 by the keys 6 in the keyboard. They are mounted on a shaft 107 extending between the members 85 and 85a. The members 85 and 85a are broken away and wheels 1115 and their dials 106 are omitted 6 in FIG. 2, as they would confuse this figure and they are clearlyvshown in FIGS. 1, ll, 16, 17 and 18.

When in their normal or retracted position, the settable means comprising the transfer wheels 1110 are locked against rotation on their supporting shaft 108 by a locking bar 109 mounted in the end member 110 (FIGS. 1 and 2) mounted on the rod or shaft 108 of the transfer wheel assembly and located between two adjacent teeth of the transfer wheels 1110 for the locking operation, as indicated in FIG. 1. The end members 85 and 85a of the transfer assembly 84 are mounted on the transverse rods or shafts 108 and 112 that are in turn mounted in and guided for limited sliding fore and aft longitudinal movement by elongated slots 113 and 114 formed in the end walls 3 and 4 (FIGS. 1 and 11). The locking bar 1119 is fixed on shaft 198 so as to be held against lateral movement, as its supporting member 1111 is pinned to the shaft, for a purpose presently to be described. The teeth 87 of the rack 86 extending between the upright end walls 85 and 85a are long enough to permit fore and aft longitudinal movement of the transfer assembly 84 While still remaining in mesh with the teeth 88 on the indexing wheel 89. Another locking bar 115 extends longitudinally from the stationary end wall 3 of the frame on the opposite side of the transfer wheels 1011, but stops with its free end 115a spaced from these Wheels and the free end 1119a of the locking bar 169, when the wheels 1110 are in their normal or retracted position as shown in FIGS. 2 and 2a. This leaves a space between the ends 109a and 115a for a free transfer wheel 1001:: for setting up a number in this wheel, as will presently be described and shown in FIG. 2a, and then when a wheel 160a is shifted to the left from this position it will be locked by the bar 115 against turning, as indicated in dotted lines, FIG. 1. The rods or shafts 1G8 and 112 pass through the slots 113 and 114 in the end walls 3 and 4 of the frame and are secured to triangular plates 116. Secured to each plate and the adjacent end walls 3 and 4 by the studs 117 and 118 respectively are coil springs 119 tending to shift these plates and the rods 1113 and 112, together with the parts carried thereby, including the transfer wheels 109, rearwardly or to the left as viewed in FIG. 1 and to the right as viewed in FIGS. 11 and 12.

Mounted on one of these plates 116, in the present case the one to the right or adjacent the frame member 4, is a locking pin 120 (FIG. 11) adapted to be engaged in the recess 121 in a locking arm or lever 122 pivoted to frame member 4 at 123, and having a long arm 124 on the opposite side of the pivot extending adjacent to an operative stem 125 on add or motor bar 126 guided for vertical movements in the keyboard plates 8 and 9 and located at a suitable position in the keyboard at one side of the digit keys 6. A spring 127 tends to swing this lever clockwise as viewed in FIG. 11, to retain its free end over the pin 120 in the locked position and thus retain the transfer assembly 84 with the transfer wheels 1011 in its normal or retracted position, as shown in FIGS. 1 and 11. Also pivotally mounted on the plate 4 at 128 is a lever 129 provided with an elongated slot 130 in which is a pin 131 fixed to the plate 116, and this lever carries at its free end a roller 132 adapted to cooperate with an inclined cam surface 133 on a retracting lever 134 on a motor-operated shaft 135. The free rear end of this plate 116, as Well as that of the opposite plate 116, is guided for longitudinal sliding movement in the adjacent plates 4 and 3 by a stud 136 mounted in each plate 116 and guided in an elongated slot 137 in the adjacent plate 3 or 4.

The shaft is driven by bevel gears 13 8 from the motor-driven shaft 139 on the opposite end of the motor 17 from the gear 16, and these gears 133 are driven from the shaft 139 through a releasable clutch 1413 including a toothed slidable clutch member 141 (FIGS. -13 and l4) movable to and from a cooperating toothed mem-' her 142 fixed to one of the bevel gears 138, the memher 141 being splined to the shaft so as to be shiftable toward and from engagement with the member 142 for driving or releasing this member. It may be shifted by a forked member 143 having rollers 144 running in a peripheral groove in the member 141, and this fork is on an arm 145 slidable in a guide and support 145a on the housing 159 enclosing the gears. The member 145 is connected by rod 146 to levers 147 and 147a pivoted to the frame member 4 at 148. Also pivoted to the lever 147 at 149 is a link 150 carrying at its opposite end a pin or stud 151 slidable in an elongated slot 152 (FIG. 11) in the plate 4. This pin 151 lies against the end 153 of a lug on the plate 116 so that shifting of the plate 116 to the right as viewed in FIG. 11 will shift the pin 151 with it and through the connection 150, 147 and 145 will shift the clutch member 141 into engagement with the member 142 to operate the bevel gears to drive the shaft 135. A spring 154 tends to shift the parts in the opposite direction or to the left as viewed in FIGS. 11, 13 and 14 to release the clutch. Means is provided for locking the members 145, 147 and 150 in position with the clutch engaged as shown in FIG. 13. This comprises a pin 155 fixed on the lever 147a and adapted to seat in a notch 156 in a locking lever 157 pivoted at 158 on the enclosing housing 159 for the gears 138. At the opposite side of the pivot from the notch 156 this lever includes an arm 160 provided with a curved surface 161 and a stepped cam 162 adapted to cooperate with a roller 163 on a crank arm 164 on the shaft 135. A spring 165 tends to swing this lever 157 clockwise as viewed in FIGS. 13 and 14 to the locked position of FIG. 13 and retain it therein.

Also connected to crank arm 164 is a link 166 pivoted at its opposite end 167 to a crank arm 168 on one end of a shaft 169 mounted in frame members 3a and 4a, and on which shaft are a series of toothed actuator wheels or gears 170. Any suitable number of these actuator wheels 170- may be employed depending on the number of digits the machine is designed to set up in a series of numbers, one for each of the transfer wheels 100, but it will be understood a greater or less number of wheels 100 and 170 may be used as desired. The shaft 169 carries arms 168a at its opposite ends, and between them they carry a rod 171 slidable in a curved slot 172 in each of the actuator wheels 170. A spring 173 is connected to each wheel 170 at 173a and the frame, as indicated at 174, to tend to turn each wheel counterclockwise as viewed in FIGS. 11 and 13, or clockwise as viewed in FIG. 1, to cooperate with the transfer wheels. Each wheel is also locked in this position by a locking pawl 175 (FIGS. 1 and 16 to 19) pivoted in the frame on a transverse rod 176 and having a free end 177 adapted to seat between two adjacent teeth on the periphery of its aligned toothed actuator wheel or gear 170 to look it in its retracted or normal position. The weighted lower end 178 tends to hold this member in the locking position of FIG. 1 and swing it to this position.

Mounted on the end members 85 and 85a of the transfer assembly 84 carrying the transfer wheels 100, and extending between these members is a release bar 179 in alignment with the lower ends 178 of the looking members 175 under certain conditions, as will later be described. Mounted on the end member 85 is a pivoted catch 180 (-FIG. 18) pivoted to the member 85 at 181 and having a roller 182 in alignment with and back of the different locking pawls in different positions of the assembly 84. At its opposite ends the catch 180 has a notch 183 adapted to receive a pin 184 on an arm 185 pivoted to the member 85 at 186 and carrying one end of a bail 187 extending longitudinally between the end members 35 and 85a and supported at its opposite end on the member a by a pivoted arm 188 (FIG. 17). This bail includes an upwardly extending intermediate lug 189 carrying an operative pin 190. A spring 191 tends to swing the catch downwardly to locking position, and a spring 192 tends to swing the bail 187 downwardly. This bail in the form shown comprises a flat narrow strip. When in its lowest position, as shown in FIG. 18, this bail is behind and in alignment with an upwardly extending pin 193 on the free end of the locking pawl 93a, and this locking pawl is also connected to indexing pawl 93 by a connecting link 194 (FIG. 10). A spring 195 (FIGS. 16 and 18) tends to shift the transfer assembly 84, including the transfer wheels 100, to the right as viewed in FIG. 16 to retain it in its normally retracted position, this spring being connected at its opposite ends to the frame member 4 at 196 and to the member 85 at 197. At the opposite end of the bail 187 from the catch 180 is an inclined cam member 198 (FIGS. 17, 18 and 19) mounted on the frame member 4, and having an inclined cam surface 199 for cooperating with the pin on the bail 187 to lift this bail to its normal or locked position, as shown in FIG. 19.

The locking pawl 93a (FIG. 10) is also used as an indexing pawl for the indexing wheel 89 to shift the transfer assembly 84 for setting up zeros in the numbers being set up in the machine. For this purpose this looking pawl is pivotally mounted at 200 on a pivoted arm 201 (FIG. 10) pivoted on the stud 91 for the wheel 89 and similar to the arm 92 on which the indexing pawl 93 is mounted. This arm 201 and the locking pawl 93a may be operated to shift the transfer assembly 84 by an operating unit 202 (FIGS. 2, 4, 9 and 10) similar to the unit A for operating the indexing pawl 93. 'This unit 202 (as shown in FIG. 9) comprises the same elements as the unit A, including the rocking lever 19a mounted on the shaft 12, a toothed wheel 23a on the shaft 12, the pawl 21:: pivoted on the member 19a at 20a, and having the pin 26a operated by the member 28a, which in turn is operated by the bail 203 operable by any one of a series of zero keys 204, 204a, 204b and 2040. This member 19a carries the pivoted lever 38a corresponding to the member 38 of unit A, and at its free end is connected by the link 49a to the sliding bar 51a mounted on the two rods 52a and 53a in the slots 54a and 55a. The link 49a is connected to the bar 51a at 50a, and bar 51a is connected by a link 205 to a pivoted arm 206 mounted at 206a to which is pivoted at 20 7 a link 208 connected to the pivoted arm 201. Depression of any one of the Zero keys 204 will operate this unit to operate the lever 201 and the pawl 93a to operate the indexing ratchet wheel 89 to set up zeros in the number, as will presently be described. The slidable bar 51a carries a lug 209 adapted to cooperate with the stops 210, 211, 212 and 213 (FIGS. 8 and 9) operated by the respective zero keys 204, 204a, 204b, and 2040. The bail 203 (FIG. 8) is mounted at its opposite ends on supporting levers 214 and 215 pivoted at 77 and 78 on the lower plate 9, and lever 215 carries an operating member 81a (FIGS. 8 and 9) for operating the tripping member 28a for setting this unit in operation. The arms 201 and pawl 93 are operated different distances to shift ratchet wheel 89 one or more steps according to movement of members 19a and 51a as controlled by the zero keys 204, 204a, etc.

Operation The operation is as follows: When any one of the keys in the keyboard 5 is depressed, it will depress the bail 74 (FIGS. 1 and 8) which goes through the extensions 7 of the center row of keys 6, and the zero key 6a, and the extensions 79 and 80 of the two side rows of keys, therefore depressing any one of these ten keys will depress the bail 74. When this bail is shifted downward- 1y it rocks downwardly with it the lever 76 (FIG. 8) carrying with it the member 81 which engages the top of member 30 and shifts this member with the member 28 downwardly. In this movement the lower end of 28 engages the stud 26 in the pawl 21, rocking this pawl downwardly so that its free end engages in the toothed wheel 23 which is being operated by the motor 17 in counterclockwise direction as viewed in FIG. 1. This wheel may be operated continuously by the motor, or a suitable switch control (not shown) could be operated by depression of the individual numbered keys to set the motor into operation as the keys are depressed. When the pawl 21 is rocked to engage in one of the notches 22 of the toothed wheel 23, its upper arm 42 is swung to the right to engage the arm 40 on the lever 38 and swing this lever counterclockwise about its pivot 39. This action swings both the upper end 41 and the lower end of the spring 46 connecting the members 42 and 38 to the right across the pivot 29 to the position shown in FIG. 3. This retains the free end of pawl 21 in one of the notches 22 in the wheel 23, and the upper end of the arm 43 of lever 38 against the stud 48 in the slot 47 and on the end of the link 49. These members are held in this position by the spring 46. Thus the spring 46 has the dual action on the pawl 21 and lever 38 of keeping them in and out of their operative positions, the normal or released position being shown in FIG. 1 and the operative position in FIG. 3.

Now, if we assume that the number 4 key is depressed, as shown at 612 in FIG. 3, wheel 23 will turn counterclockwise, carrying with it the sliding bar member 51 until the lug 82 carried thereby engages the depressed lower end of the extension 79a for this number 4 key, which has been depresed with the key, as shown in FIG. 3. Movement of the member 51 will also through the link 58 swing the toothed segment 59 to the left, rotating the ratchet gear 62 with it, turning this gear clockwise four teeth from its normal retracted position to correspond with the number 4 key depressed. .In other words, this turns the pawl 64 (FIGS. 6 and 7) clockwise four notches in the ratchet wheel 67, this ratchet wheel being held stationary by the pawl 68 co-acting with the teeth of wheel 69 connected to wheel 67. This action of the lever 19 also shifts the connecting link 96 to the right, swinging with it the lever arm 92 (FIG. 10) carrying the indexing pawl 93, which thus turns the indexing wheel 89 counterclockwise one notch. As this meshes with the rack 87 on the transfer Wheel or settable stop means assembly 84 it shifts this assembly with the settable means or transfer wheels 100 forwardly or to the left as viewed in FIGS. 2 and 16 the distance between two adjacent wheels 10%), and will bring the first wheel 100a into alignment with and into mesh with the ratchet driven input gear wheel 72, as shown in FIG. 2a. In this position this wheel 10011 has been moved off the end of the locking bar 109 and has not yet reached locking bar 115, and therefore it is free to turn with the drive wheel 72.

When the movement of the slidable bar 51 is limited by the lug 82 engaging the extension on the number 4 key, lever 19 continues to try to move to push the slidable bar further. However, as slidable bar 51 and link 49 can move no further, the upper end of lever 19 continues to move because the stud 48 is in the slot 47, and has been held against the rearward end of this slot by spring 57 as shown in FIG. 3. This causes the upper end portion 43 of lever 38 to push against the stud 48, thus swinging the lever 38 clockwise to carry the lower end of the spring 46 to the left past the pivot center 20. Also, the portion 40 of the lever 38 will engage the upper end of the arm 42 of the pawl 21 and swing it to the left, so that the upper end of spring 46 is also now on the opposite side of the pivot 20 and will trip the pawl 21 counterclockwise to release it from the rotating wheel 23. When this happens, spring 19a will swing the member 19 clock wise and return it to its normal retracted position, which is the position of FIG. 1. When these parts moved from the position of FIG. 1 to the position of FIG. 3, the stud 26 on the pawl was carried free of the lower end of the member 28, as the movement of this member to the left 1.9 was limited by the stop pin 33. This freed the pawl 21 from the action of the member 28 so that the pawl was free to be released by the arm 40 of lever 38, as described. When the parts move back to the position of FIG. 1 the stud 26 runs on the inclined cam 23m to swing the member 23 to the right, and to permit the stud 26 to take its normal position under the free end of the member 28 preparatory to the next tripping operation.

When the member 19, slidable bar 51 and toothed segment 59 return to the right to their normal retracted position, this segment turns the gear wheel 62 counterclockwise the four notches which have been set up in this gear. This turns the pawl 64 and ratchet wheel 67 (FIG. 7) counterclockwise four points, and as ratchet wheel 67 is connected to the ratchet driven input gear wheel 72 it will turn this wheel counterclockwise four teeth or four points, there being ten teeth in the input gear wheel. As the input gear wheel is in mesh with the free transfer wheel itltla (FIG. 2a) it will turn this wheel clockwise four teeth or four points, as this wheel also has ten teeth. This will turn the stop 161 (FIG. 1) on the tenth tooth of this wheel 1011a four teeth or four points away from the stop comb 103, and also, as this wheel is in mesh with the first dial wheel 164, will turn this wheel to show that the digit 4 has been set up in the first transfer wheel 1%. By repeating this operation with the same or different keys 6, successive digits may be set up in successive transfer Wheels 100, and the size of the resulting number is dependent on the number of keys depressed, the largest possible number depending on the number of wheels with which the machine is designed, there being ten in the machine as shown in the drawing. It will be seen that the full number as set up in the transfer wheels will be shown in the dial wheels 164, so that the operator can check to see whether the correct number has been set up in the transfer wheels, and if incorrect, can have it corrected before transferring it to the accumulator or actuator wheels. As digits are set up in successive transfer wheels 1410 in the position 1min, and they are shifted one spacing to the left as viewed in FIGS. 2 and Zn, on each depression of a key on the keyboard, as each wheel is shifted from the free position 100a in FIG. 2a it will be shifted into engagement with the stationary locking bar 115, so that the transfer wheels into which a digit has been set will be locked in this position until the completed number has been set up in the series of transfer wheels.

After the desired number or digits have been set up in the transfer wheels 1%, it is desired to print and register the-m in the accumulator comprising the actuator wheels and either adding or subtracting mechanism associated therewith, indicated merely diagrammatically by the wheels 216 (FIG. 1) for the adding section and 217 for the subtracting section, the adding and subtracting mechanism per se not being shown as they of themselves form no part of the present invention. To register the number in the accumulator, the motor bar at one side of the keyboard, indicated at 126, FIG. 11, is depressed. This will depress the pivoted locking or control bar 124, lifting its other end from the pin 126. This will release the transfer assembly 84, carrying the transfer wheels 10%, so that it will be shifted rearwardly or to the left as viewed in FIG. 1, or to the right as viewed in FIGS. ll and 12, by means of the springs 119. This will shift the transfer wheels 1% to the left as viewed in FIG. 1, and will carry the wheels 1% into which the number has been set up into mesh with the respective actuator wheels 170- with which they have been brought into alignment. It will also disengage any transfer wheel from engagement with the input gear wheel 72. It will also shift the transfer wheels 1% in which numbers have been set up away from the locking bar 115, as shown in FIG. 18, so that these wheels are now free to turn with the actuator Wheels 17 0. As we have assumed that only the number 4 has been set up in one transfer Wheel 1%, or that is, the first transfer wheel 100a, as shown in FIG. 2a, this rearward shifting of the transfer assembly will shift this wheel 108a out of mesh with the input gear wheel 72 and into mesh with the first actuator Wheel 178a (FIG. 2a). All other transfer wheels 1911 will be locked against turning by the locking bar 189. However, as previously indicated, if numbers have been set up in other transfer wheels 108, those shifted beyond the free position 188a will be locked in their set-up position by the locking bar 115.

When the transfer assembly 84 is shifted rearwardly, the bar 179 (FIGS. 1, 18 and 19) carried by the members 85 and 85a will hit the lower end portion 178 of any locking pawl 175 of any actuator wheels 170 with which a transfer wheel 100 has been shifted into mesh. That is, as in our example we have only set a number up in the first transfer wheel lllltla, the locking pawl 175 for the first actuator wheel 178a will be released by the bar 179. This movement causes the upper end of member 175 to engage the roller 182 (FIG. 18) on the locking member 188. This shifts the holding notch 183 of this member away from the pin 184 and releases the bail 187 so that it drops to its lower position, as shown in FIG. 18, under action of the spring 192. This shifts this bail to a position, as shown in FIG. 18, behind and in alignment with the stud 193 on the locking pawl 93a (FIG. 10).

As the transfer assembly 84 is shifted rearwardly, or to the right as viewed in FIG. 11, the lug 153 on the right hand plate 116 carrying this assembly will engage the stud 151 on the member 150, shifting this member to the right as viewed in FIGS. 11, 13 and 14, and this member, acting through the pivoted arm 147 and the connection 145, will shift the clutch member 141 into mesh with the member .142 so that the motor 17 will now drive the shaft 135 carrying the crank arm 164. This through the link connection 166 will swing the arms 168 and 168a upwardly or counterclockwise as viewed in FIGS. 11 and 13, or clockwise as viewed in FIG. 1, carrying with them the rod or bar 171 in the curved slots 172 in the actuator wheels 170, or 170a, which is the wheel with which the first transfer wheel 188a is in mesh. This permits the wheel 170a to follow along with the rod 171 by action of its spring 173, and as this wheel 178a is being turned counterclockwise as viewed in FIGS. 11 and 13, or clock- Wise as viewed in FIG. 1, it will turn the transfer wheel 188a counterclockwise as viewed in FIG. 1 the four teeth or four points, which has been set up in this wheel. This will bring the stop pin 1111 back into engagement with the stop comb 183. This will limit further movement of both the wheels 176a and 188a. If more transfer wheels 1011 have been set up, corresponding numbers will be set up in actuator wheels 1711 with which they have been placed in mesh by shifting of the assembly 84. These numbers will be transferred to the adding section 216 or the subtracting section 217 depending on with which the intermediate gears 218 are in mesh. An appropriate add or subtract key may be provided to control the selection of the desired section. Also, the wheels 17 may operate a rotary printing means 219 against a platen 220, both shown merely diagrammatically in the drawing, to print the numher on a suitable paper.

As the member 147 was shifted to the right as viewed in FIG. 14 to engage the clutch, it carried the stud 155 under the notched end of the lever 157, as viewed in FIG. 13, thus locking the clutch in its engaged or operative position. As the shaft 135 continues to rotate, it carries with it the arms 134 and 164 in the direction indicated by the arrows in FIGS. 11, 13 and 14. As the cam 133 on the arm 134 engages the roller 132 on the lever 129, as shown in FIG. 12, it swings this lever upwardly and to the left as viewed in FIG. 11 and shifts the transfer assembly 84 to the left as viewed in FIG. 11 or the right as viewed in FIG. 1, to carry any transfer wheel or wheels 100 which have been in mesh with one or more actuator wheels 170, out of engagement with these wheels 170, and locks the transfer assembly in this position by the catch 122. Continued rotation of the shaft has brought the roller 163 on the arm 164 into engagement with the cam 162 on the locking lever 157, as shown in FIG. 14. This raises its notched end 156 out of engagement with the stud '155 and releases the lever 147, which is now swung to the left or backwardly by the spring 154 to release the clutch and stop rotation of the shaft 135. This is the position of FIG. 14. As the crank arm 164 moves to this position, it swings the rod 171 downwardly in the curved slots 172 in the accumulator wheels or 170a, and by engagement with the lower end of this slot shifts any of these actuator wheels into which a number has been set up to correspond with any transfer wheel 100, back to its normal position preparatory to having the cycle repeated.

As the transfer assembly 84 is shifted back to carry the transfer wheels 100 out of mesh with the actuator wheels 17 0, or that is, the transfer assembly is shifted to the left as viewed in FIGS. 11 and 18, the bail 187 (FIGS. 17, 18 and 19) will engage the stud 193 on the locking pawl 93a (FIG. 10) and will shift it to the right or the dotted line position of FIG. 18. This will release the indexing pawl 93 (FIG. 10) as this pin is connected to this pawl by the connection 194. This releases the indexing wheel 89 and permits the whole transfer assembly 84 with transfer Wheels 1111} to be shifted to the right or back to its normal position, as viewed in FIGS. 2, 16 and 17, preparatory to setting up a number in the next cycle of operation. As this movement is completed, the pin 190 on the bail 187 engages the inclined cam surface 199 (FIGS. 17, 18 and 19) and shifts the bail upwardly to its normal position of FIG. 19 where it is locked by the catch 180. Movement of the transfer assembly 84 to the right also releases any locking pawl which has been operated, and permits it to return to locking position with its respective actuator wheel 170.

Zeros can be set up in the number in the transfer wheels 100 by depressing the zero key 6a in the keyboard, which will operate the same as the numbered keys 6, the slide bar 51 being provided with a second lug 83 adapted to cooperate with the lower end of the extension 6b on the key. This lug, however, is so arranged as to prevent forward movement of the bar 51 on depression of the key 6a, but it will depress the bail 74 and the operating member 81 to depress the member 28 and operate the pawl 21 into engagement with the toothed wheel 23, as described in connection with the other keys 6. This will cause the member 19 to be shifted counterclockwise and permit it by movement of the slot 47 on the pin 48 and operation of the link connection 96 to operate the indexing pawl 93 (FIG. 10) to operate the toothed wheel 89 and shift the transfer assembly 84 with the transfer wheels 1811 one step or one notch to the left as viewed in FIGS. 2 and 2a, equal to the distance between the transfer wheels 100, for each depression of the key 6a. This, however, will not set up any number other than zero in the transfer wheels .100, as the bar 51 is not shifted, so that the zero will thus be set up in each wheel 100 and in each registering wheel 104, according to the number of times the Zero key 6a is depressed.

However, means is provide-d whereby a series of zeros may be set up in these wheels by depression of a single key. Thus, as shown in FIG. 9, there is an operating unit 202 similar to the unit A operated by the digit keys 6. However, this unit 202 is controlled by a series of zero keys 284, 204a, 204b, 264c and 284d, four being shown by way of illustration, but the number of these keys may be varied as found desirable. As shown in FIG. 8, each of these keys has an extension 210, 211, 212 and 213, which, when any one of these keys is depressed, will be moved into the path of movement of the lug 209 on the slidable bar 51a to arrest forward movement of this bar according to which key 204, etc., is depressed. Passing through the stem of each of these keys is the second bail 203 (FIGS. 8 and 9) mounted on the two levers 214 and 215 pivoted in the keyboard support by the pivots 77 and 78. Therefore,

depression of any one of these zero keys will depress this bail 2413 and the operating member 81a connected thereto to set into action the operating unit 202. This action depresses the member 23a which shifts the pawl 21a into engagement with the toothed wheel 23a on shaft 12 and driven by the motor 17. This, as previously described in connection with the operating unit A for the digit keys 6, will operate the member 190 counterclockwise as viewed in FIG. 9. This thnough the link 49a and the connections 2&5, 206, 208 will operate the pivoted arm 201 to shift the locking pawl 93a carried thereby (FIG. to operate the toothed wheel 89 one or more teeth or steps, depending on the amount and to which key the bar 51a is shifted to shift the transfer assembly 84 with the transfer wheels 100 one or more steps, depending on which zero key is depressed. It is preferred that the extension stops 210, 211, 212 and 213 and the lug 269 be so located that if the first key 204 is depressed, the transfer wheels 100 will be shifted two steps or twice the distance between two adjacent wheels, but if the key ZiMa is depressed, then they will be shifted three steps to set up three zeros in the wheels 100, and so on with keys 1b and 264s, and which will later be set up in the actuator wheels 170, as previously described in connection with the operating unit A controlled by the digit keys 6. This additional unit is therefore provided to facilitate and shorten the operation of setting up more than one zero of the number set up in the transfer wheels, which in eifect, instead of requiring the depression of zero key 6a three times to set up three successive zeros, for example, the same operation may be accomplished by depressing the zero key 204a once only.

It will thus be seen from the above that the single operating unit A is used to set up the digits in the transfer wheels from all of the ten numbered keys in the keyboard, doing away with the usual movable pin basket and the separate transfer racks and bars for each key used in the old type of machine. Also, by means of the stop 101 on the tenth tooth of the transfer wheels 18$), limiting movement of the wheel on which it is mounted against the stop comb 1G2, there is provided a permanent fixed stop for any amount that may be set up in the keyboard. Thus, the only possible distance of travel for each transfer wheel 100 is nine points forward from the normal position and nine points backward from the forward position.

A very important advantage and new result of this machine is that at the end of a half cycle of the accumulating portion of the machine, new amounts can be set up in the keyboard and it is not necessary to wait for completion of the full cycle of the machine to operate the keyboard. In this present machine the transfer assembly 84 is returned to normal position at the end of the forward part of the cycle. Thus while the accumulator, through the wheels 17%, is absorbing the amounts that were positioned in the transfer wheels 100, new amounts can be set up in the keyboard. Thus, as the shaft or bar 171 in the actuator wheels 170 returns to normal, it will pick up any wheel 170 that has been actuated and return it to normal. The amounts will be added to the wheels 216 and 217 and the accumulator mechanism (not shown) through wheel 218 (either adding or subtracting, according to whichever the assembly 2 18 and 218a is set for). PEG. 1 shows this assembly set for adding, but when subtraction is desired this assembly is swung rearwardly [to engage wheels 217. Thus in this machine the transfer wheels the are worked independently of the usual racks or wheels associated with the movable baskets, and when the numbers are being set up in them are not in mesh with any actuator wheel, thus allowing operation of the transfer wheels 106 or the assembly section 84 independently and within the cycle of this machine. That is, while the actuator wheels are being returned to normal and transferring the number previously set up in the transfer wheels to the accumulator mechanism, the operator can be setting up new amounts in the keyboard without waiting until the end of the full cycle of the machine before starting to set up these new amounts. This greatly increases the speed of operation, because at the end of each half cycle transfer wheels 1% return to normal. After this happens, return of the actuator wheels in the last half of the cycle transfers the amounts to the adding or subtracting section, and during this time the operator can be setting up new amounts in the keyboard. Locking paWls 175 are one-way pawls so that when in the locking position they prevent turning of wheels by springs 173 but permit return of these wheels to their normal position and operation of the accumulator mechanism under action of bar 171. The number of parts is greatly reduced and the mechanism greatly simplified because there is a single unit operating to set up the numbers for all the keys.

It is also to be realized that the mechanism controlled by the keys is electrically operated, so that all the operator has to operate by the keys is the depressing movement of this key to trip the operating unit and set it in operation. This also means that the same and a uniform force is required for each and all the keys regardless of the number of digits to be set up by each key.

It is also important that visible amounts are set up in the dialing or registering wheels 194 in mesh with the transfer Wheels 160, so the operator can see at all times what number is set up in the transfer wheels, but these wheels 104 have no effect on the transfer wheels 1%, as all they have to do is to show the amounts set up in the keyboard.

It will be seen from the above and the drawings that this calculating machine has electrically power driven means for successively setting the various stop means to operative positions for determining the extent of movement of the accumulator actuator means, and that this provides an improved construction for a ten key calculating machine whereby the successive indexing of the settable stop means of the machine is effected by a single power driven unit which is controled by the operation of the amount keys of the machine.

It also provides an improved construction for a ten key adding machine whereby an amount may be set up on the keyboard before completion of the immediately preceding machine cycle.

Having thus set forth the nature of my invention, I claim:

1. A calculating machine comprising a series of numeral keys, a series of toothed transfer wheels movable from a normal inoperative position to a single operative position, means for setting up numerals in the successive transfer wheels in the operative position according to which key is operated, said means comprising a single operative unit including a forwardly and backwardly movable member, a toothed segment operated by said member, a motor for operating said unit, a toothed drive wheel capable of meshing with a transfer wheel in the operative position, a one-way ratchet drive from the segment to the drive wheel operable to turn said wheel only on reverse movement of the segment and movable member, and means operable by said unit on forward movements of the movable member to shift the transfer wheels successively to the operative position.

2. A calculating machine comprising a series of numeral keys, a series of toothed transfer wheels movable successively to an operative position, means for setting up numerals from the keys in successive transfer wheels in the operative position according to which key is operated, said means comprising a single operative unit controlled by each key, said unit including a motordriven shaft, a toothed drive wheel secured on the shaft, a pivotally mounted operative member, a pivoted pawl mounted on said member movable to and from engagement with the teeth of the drive wheel and provided with an arm, a lever pivotally mounted on the operative memher having an arm adjacent one end adapted to be engaged by the arm of the pawl to be operated thereby, a spring connecting said arm and the other end of the lever and movable with the lever and arm past the pivot of the pawl to retain the pawl in engagement with the toothed wheel and released therefrom, means operably by a key to shift the pawl into engagement with the toothed wheel to shift the operative member on its pivot, a bar mounted for limited sliding movement connected by a lost motion connection to the operative member for operation thereby, means operable by individual keys to limit forward movement of said bar, means operable by said bar to set up a corresponding number in a transfer wheel in the operative position, and means operable by movement of said operative member to shift the transfer wheels successively to the operative position.

3. A calculating machine comprising a series of numeral keys, a series of toothed transfer wheels movable from a normal inoperative position to an operative position, means for setting up numerals in the successive transfer wheels in the operative position according to which key is operated, said means comprising a motor-operated shaft, a toothed operating wheel secured to the shaft, an operating lever pivotally mounted on the shaft, a pawl mounted on said lever and movable to and from engagement with the teeth of the operating wheel for operation of said lever, a second lever pivotally mounted on the operating lever and connected with the pawl by a means to retain the pawl in the released or operative positions, a bar mounted for limited movement connected to the operating lever, means operated by the individual keys to limit movement of said bar, means operated by the bar to set up different numbers in successive transfer wheels in the operative position comprising a toothed drive wheel capable of meshing with the transfer wheel in the operative position and a one-way ratchet drive between the bar and the drive wheel capable of rotating said wheel to set up a number in the transfer wheel only on reverse movement of the bar, means operable by each key to shift the pawl into engagement with the operating wheel for operation thereby, and means operative by the operating lever to shift the transfer wheels successively into the operative the position and into mesh with the drive Wheel during forward movement of the bar.

4. A calculating machine comprising a series of numeral keys, a series of transfer Wheels mounted on a common axis and normally in a retracted inoperative position, means for axially shifting said wheels successively to a single unlocked operative position, means for setting up numerals from the keys in successive transfer wheels in the operative position according to which key is operated comprising a single operative unit controlled by each of the keys, means controlled by said unit for shifting the transfer wheels in succession from the retracted inoperative position to and beyond the operative position on successive operation of the keys, means engaging and locking the transfer wheels against rotation while in the normal retracted position, and means separate from said last named means engaging and locking the wheels against rotation while shifted beyond the operative position, the first mentioned of said locking means comprising an elongated member in direct physical engagement with peripheral portions of all of the transfer wheels that are disposed in their retracted inoperative position, and the other of said locking means comprising an elongated member in direct physical contact with peripheral portions of all the transfer Wheels that have been shifted beyond the operative position.

5. A calculating machine comprising a series of numeral keys, a series of toothed transfer wheels normally in a retracted inoperative position, means for shifting said wheels successively to a single unlocked operative position, means for setting up numerals from the keys in successive transfer wheels in the operative position according to which key is operated, said means comprising a motor-operated unit including a forwardly and backwardly movable member, a toothed segment operated by said member, a toothed drive wheel capable of meshing with a transfer wheel in the unlocked operative position, a oneway ratchet drive from the segment to the drive wheel operable to turn said wheel only on reverse movement of the segment and movable member, means controlled by said unit for shifting the transfer wheels in succession to and beyond the unlocked operative position on successive operation of the keys, means engaging and locking the transfer wheels against rotation while in the normal retracted position, and means separate from said last named means engaging and locking the wheels against rotation while shifted beyond the operative position.

6. A calculating machine comprising a series of numeral keys, a series of toothed transfer wheels movable successively from a locked inoperative position to a single unlocked operative position, means for setting up numerals from the keys in successive transfer wheels in the operative position according to which key is operated, said means comprising a single operative unit which is controlled by each key, said unit including a motor-driven shaft, a toothed drive wheel secured on the shaft, a pivotally mounted operative member, said pivotally mounted operative member being pivotal on an axis that is coaxial with said shaft, means controlled by operation of each key for connecting said operative member to the drive Wheel for operation thereby, means controlled by each key for controlling the amount of operation of said operative member, means operable by said operative member for setting up a number in a transfer wheel in the operative position according to the key operated, and means operable by movement of said operative member to shift the transfer wheels successively to the operative position.

7. A calculating machine comprising a series of numeral keys and a series of plural zero keys, a series of transfer wheels mounted on a common axis and axially movable successively from a normal retracted inoperative position in which they are set for a value of zero to and beyond an operative position, means for setting up numbers in the successive transfer wheels in the operative position according to the numeral key operated comprising a motor-operated unit controlled by each numeral key, means controlled by said unit for axially shifting the transfer wheels one at a time successively to the operative position on successive operation of the numeral keys, a second motor-operated unit controlled by the zero keys, and means controlled by the second unit for axially shifting the transfer wheels to and beyond the operative position two or more wheels at a time in accordance with the plural zero key operated.

8. A calculating machine comprising a series of numeral keys and a series of zero keys, a series of toothed transfer wheels movable successively from a normal retracted inoperative position to and beyond an operative position, means for setting up numbers in the successive transfer wheels in the operative position according to the numeral key operated comprising a motor-operated unit controlled by each key, a forwardly and backwardly movable toothed segment operated by said unit, a toothed drive wheel capable of meshing with a transfer wheel in the operative position, a one-Way ratchet drive between the segment and the drive wheel capable of operating the drive wheel only on reverse movement of the segment, means operated by the unit for shifting the transfer wheels one at a time successively to the operative position on successive operations of the numeral keys, a second operative unit controlled by the zero keys, and means operated by the second unit capable of shifting the transfer Wheels to and beyond the operative position two or more wheels at a time 'by a single operation of the second unit according to the zero key operated.

9. A calculating machine comprising a series of numeral keys and a series of plural zero keys, a series of settable means, means locking the settable means in a normally retracted zero position, means mounting the series of settable means on a common axis for axial movement of each successively from the normal retracted inoperative position to and through an unlocked operative position, a motor-operated unit controlled by the numeral keys capable of setting up a number in a settable means in the operative position according to the key operated, means controlled by said unit for axially shifting the settable means one at a time only to and through the operative position, a second operative unit controlled by the plural zero keys, and means controlled by the second unit capable of axially shifting the settable means while maintained in the zero position to and through the operative position a plurality of settable means at .a time in response to operation of a plural zero key.

10. A calculating machine comprising a series of numeral keys, a transfer assembly comprising a series of transfer wheels each having ten teeth with a stop on the tenth tooth, a stop associated with each wheel in position to be engaged by the stop on the wheel to limit its reverse movement at a normal retracted position, means mounting the transfer assembly for movement to shift the transfer Wheels in succession from a normal inoperative position to and through an operative position, an operative unit controlled by the keys capable of setting up a number in a transfer wheel in the operative position according to the key operated by rotating the transfer wheel to move its stop away from its associated stop, means operated by said unit for shifting the transfer assembly to bring the transfer wheels in succession to and through the operative position for setting up of said numbers therein, a series of toothed actuator wheels capable of operating an accumulator mechanism normally spaced longitudinally from said transfer wheels, a motor bar, means controlled by said bar capable of shifting the transfer assembly longitudinally to bring the transfer Wheels in which a number has been set up into mesh with the actuator wheels, means operable to actuate the actuator wheels to return the transfer wheels to their normal retracted position wherein their stops are engaged, a motor, means operated by the motor for then shifting the transfer wheels longitudinally from mesh with the actuator wheels and permitting return of the transfer assembly to its normal retracted position, and means operated by the motor capable of returning the actuator Wheels to their normal position and actuating the accumulator mechanism after the transfer wheels are shifted out of mesh with the actuator wheels.

11. A calculating machine comprising a series of numeral keys, a series of toothed transfer wheels, means mounting said wheels for movement from a normal retracted position to and through an operative position, an operative unit controlled by the keys capable of setting up a number in a transfer wheel when in the operative position to correspond with each key operated, a series of toothed actuator wheels capable of operating an accumulator mechanism normally spaced longitudinally from said transfer wheels, means operable by said unit for shifting the transfer wheels to and through the operative position successively into alignment with respective actuator wheels, a control bar, means controlled by said bar capable of shifting the aligned transfer Wheels longitudinally into mesh with the actuator wheels, means for then turning the respective actuator wheels an amount corresponding with the numbers set up in the transfer wheels meshed therewith and at the same time turning the transfer wheels to a normal in operated position, means capable of then shifting the transfer wheels 1ongitudinally from mesh with the actuator wheels and returning them to their normal retracted position, and means capable of returning the actuator wheels to their normal position and actuating the accumulator mechanism after the transfer wheels are shifted out of mesh with the actuator wheels.

12. A calculating machine according to claim 11 in which there is a motor for operating the operative unit, means operated by the motor through a releasable clutch for shifting the transfer wheels from mesh with the actuator wheels after setting up their number in the transfer wheels and returning the actuator wheels to their normal position, and means operable by movement of the transfer wheels to engagement with the actuator wheels for engaging the clutch to operate said motor operated means after setting up of the numbers in the transfer wheels into the actuator wheels.

13. A calculating machine comprising a series of numeral keys, a series of toothed transfer wheels, means comprising a transfer assembly mounting said wheels for lateral movement between a normal inoperative retracted position and an operative position, a motor, an operative unit operated by said motor, means controlled by the keys for controlling operation of said unit, means operated by said unit capable of setting up numbers in the transfer wheels in the operative position to correspond with those on the keys operated, means operated by said unit to shift the transfer assembly laterally to shift the transfer wheels successively to and through the operative position on operation of the keys, a series of toothed actuator wheels capable of actuating an accumulator mechanism and in position in alignment with the respective transfer wheels in which said numbers have been'set up but spaced longitudinally rearwardly thereof, means capable of shifting the transfer assembly longitudinally rearwardly to shift the aligned transfer wheels into mesh with the respective actuator wheels and means for locking the transfer assembly against action by said means, a control bar, means operated by said control bar for releasing said locking means to permit shifting of the transfer assembly and transfer Wheels to the meshing position, means capable of operating the meshed actuator wheels to transfer the numbers set up in the transfer Wheels to the actuator wheels, means operable by the motor including a releasable clutch for permitting said operation of the actuator wheels, means controlled by movement of the transfer assembly to and from engagement of the transfer wheels with the actuator wheels to engage and release the clutch, means operable through the clutch to shift the transfer assembly longitudinally forwardly to shift the transfer Wheels from mesh with the actuator wheels after transfer of the numbers in the transfer wheels into the actuator wheels and permit shifting of the transfer assembly back to its normal retracted position, and means operated by said clutch to then return the operated actuator wheels to their normal retracted position and operate the accumulator mechanism according to the numbers transferred to these wheels. m

14. A calculating machine comprising a series' of unmeral keys, a series of toothed transfer wheels, means mounting said Wheels for lateral movement from a normal laterally retracted position to and through a power-operated position, an operative unit controlled by the keys capable of setting up a number in a transfer wheel when in the operative position to correspond with each key operated, a series of toothed actuator wheels capable of operating an accumulator mechanism and normally held in a retracted position longitudinally spaced rearwardly of said transfer Wheels, means operable by said unit for shifting the transfer wheels to and through the operative position successively into alignment with respective actuator wheels, a locking pawl for each actuator wheel, a control bar, releasable means controlled by said bar holding the transfer wheels out of mesh with the aligned actuator wheels, means for shifting said transfer whels longitudinally rearwardly into mesh with the aligned actuator wheels when the said releasable holding means is released, means operable by said latter movement of the transfer wheels to release the locking pawls of the aligned actuator wheels, means for then turning the respective actuator wheels an amount corresponding with the numbers set up in the transfer wheels meshed therewith and at the same time turning the transfer wheels to a normal inoperated position, means capable of then shifting the transfer wheels longitudinally forwardly from mesh with the actuator wheels and returning them to their normal retracted position, and means capable of returning the actuator wheels to their normal position and actuating the accumulator mechanism after the transfer wheels are shifted out of mesh with the actuator wheels.

15. A calculating machine comprising a series of numeral keys, a series of toothed transfer wheels movable successively to an operative position, means for setting up numerals from the keys in successive transfer wheels in the operative position according to which key is operated, said means comprising a single operative unit controlled by each key, said unit including a motor-driven shaft, a toothed drive wheel secured on the shaft, a pivotally mounted operative member, means controlled by operation of each key for connecting said operative member to the drive wheel for operation thereby, means controlled by each key for controlling the amount of operation of said operative member, means operable by said operative member for setting up a number in a transfer wheel in the operative position according to the key operated including a forwardly and backwardly movable toothed segment connected to the operative member, a toothed drive wheel capable of meshing with a transfer wheel in the operative position, a one-way ratchet drive from the movable segment to the drive wheel capable of rotating said wheel only on reverse movement of the segment, and means operable by movement of said operative member to shift the transfer wheels successively to the operative position.

16. A calculating machine comprising a series of numeral keys, a series of toothed transfer wheels movable successively to an operative position, means for setting up numerals from the keys in successive transfer wheel-s in the operative position according to which key is operated, said means comprising a single operative unit controlled by each key, said unit including a motor-driven shaft, a toothed drive wheel secured on the shaft, a pivotally mounted operative member, a pivoted pawl mounted on said member movable to and from engagement with the teeth of the drive wheel, means operable by a key to shift the pawl into engagement with the toothed wheel to shift the operative member on its pivot, a bar mounted for limited sliding movement connected by a lost motion connection to the operative member for operation thereby, means operable by individual keys to limit forward movement of said bar, means operable by movements of said bar for setting up the corresponding number in a transfer wheel in the operative position, means operated by continued movement of the operative member after the bar reaches its forward position, which movement is permitted by the lost motion connection between said member and the bar, to release the pawl from the toothed wheel, and means operable by movement of said operative member to shift the transfer wheels successively to the opera-tive position.

References Cited in the file of this patent UNITED STATES PATENTS 885,522 Von Reppert Apr. 21, 1908 2,019,900 Fuller 'Nov. 5, 1935 2,062,963 Benninger Dec. 1, 1936 2,303,692 Hellgren Dec. 1, 1942 2,352,006 tPott June 20, 1944 2,681,765 Hopkins et al June 22, 1954 2,708,550 Maier May 17, 1955 2,827,230 Anderson Mar. 18, 1958 2,894,682 Ar-via July 14, 1959 2,905,381 Westinger et a1 Sept. 22, 1959 2,922,574 Matthew Jan. 26, 1960 2,945,622 Heinze July 19, 1960

Claims (1)

1. A CALCULATING MACHINE COMPRISING A SERIES OF NUMERAL KEYS, A SERIES OF TOOTHED TRANSFER WHEELS MOVABLE FROM A NORMAL INOPERATIVE POSITION TO A SINGLE OPERATIVE POSTION, MEANS FOR SETTING UP NUMERALS IN THE SUCCESSIVE TRANSFER WHEELS IN THE OPERATIVE POSITION ACCORDING TO WHICH KEY IS OPERATED, SAID MEANS COMPRISING A SINGLE OPERATIVE UNIT INCLUDING A FORWARDLY AND BACKWARDLY MOVABLE MEMBER, A TOOTHED SEGMENT OPERATED BY SAID MEMBER, A MOTOR FOR OPERATING SAID UNIT, A TOOTHED DRIVE WHEEL CAPABLE OF MESHING WITH A TRANSFER WHEEL IN THE OPERATIVE POSITION, A ONE-WAY RATCHET DRIVE FROM THE SEGMENT TO THE DRIVE WHEEL OPERABLE TO TURN SAID WHEEL ONLY ON REVERSE MOVEMENT OF THE SEGMENT AND MOVABLE MEMBER, AND MEANS OPERABLE BY SAID UNIT ON FORWARD MOVEMENTS OF THE MOVABLE MEMBER TO SHIFT THE TRANSFER WHEELS SUCCESSIVELY TO THE OPERATIVE POSITION.

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