US3107851A

US3107851A - Calculating machine

Info

Publication number: US3107851A
Authority: US
Publication date: 1963-10-22
Anticipated expiration: 1980-10-22

Description

Oct. 22, 1963 Filed Dec. 2l,- 1959 A. J. MALAVAZOS ETAL CALCULATING MACHINE 16 Sheets-Sheet 1 FIlE| l 1963 A. J. MALAVAZOS ETAL 07,

CALCULATING MACHINE Filed Dec. 21, 1959 l6 Sheets-Sheet 2 1963 A. J. MALAVAZOS ETAL 3,107,851

CALCULATING MACHINE Filed Dec. 21, 1959 16 sheets sheet s 1963 A. J. MALAVAZOS ETAL 3,107,851

CALCULATING MACHINE 16 Sheets-Sheet 4 Filed Dec. 21, 1959 M M-HI H 1963 A. J. MALAVAZOS ETAL 3,107,851

' CALCULATING MACHINE W I I-HMH 16 Sheets-Sheet 5 Filed Dec. 21, 1959 A. J. MALAVAZOS ETAL Oct. 22, 1963 CALCULATING MACHINE 1s Shets-Sheet 6 Filed Dec. 21, 1959 a N: 5 q

1963 A. J. MALAVAZOS ETAL 3,107,851

CALCULATING MACHINE Filed Dec. 21, 1959 16 Sheets-Sheet 7 Oct. 22, 1963 A. J. MALAVAZOS ETAL CALCULATING MACHINE Filed Dec. 21, 1959 16 Sheets-Sheet 8 WH UHI H S 22, 1963 A. J. MALAVAZQS ETAL 3,107,851

CALCULATING MACHINE Filed Dec. 21, 1959 16 Sheets-Sheet 9 IE IE|- 1 1963 A. J. MALAVAZOS ETAL 3,107,851

CALCULATING MACHINE l6 Sheets-Sheet 10 Filed Dec. 21, 1959 1963 A. J. MALAVAZOS ETAL 3,107,851

CALCULATING MACHINE 16 Sheets-Sheet 11 Filed Dec. 21, 1959 Oct. 22, 1963 A. J. MALAVAZOS ETAL 3,107,851

CALCULATING MACHINE Filed Dec. 21, 1959 1e Sheets-Sheet 12 1: IIEI ILE- 1963 A. J. MALAVAZOS ETAL 3,107,851

CALCULATING MACHINE Filed Dec. 21, 1959 16 Sheets-Sheet 13 Oct. 22, 1963 A J. MALAVAZOS ETAL CALCULATING MACHINE 16 Sheets-Sheet 14 FIE. E|:

Filed Dec. 21, 1959 I Oct. 22, 1963 A. J. MALAVAZOS 'ETAL 3,107,851 CALCULATING MACHINE Filed Dec. 21, 19169 16 Sheets-Sheet 15 5 A. J. MALAVAZOS ETAL 3,107,851

CALCULATING MACHINE Filed Dec. 21, 1959 16 Sheets-Sheet 16 United States PatentO 3,107,851 CALCULATING MACHINE Arthur J. Malavazos, Hayward, and Leif Sundhlom,

Castro Valley, Calif., assignors to Friden, Inc, a corporation of California Filed Dec. 21, 1959, Ser. No. 860,959 10 Claims. (Cl. 235-63) TABLE OF CONTENTS I. Conventional mechani ma General Arran ement Keyboard Keyboard Clearing. Selection Mechanism- Accumulator Register Actuating Meflmnl m Drive Mechanism and Clutch.-- Counter Register Register Clearing Carriage Shift- Automatic Clearing and Shifting- Conventional Multiplication Mechanlsm. Storage Register torage Dial Multiplication Mechanism General Arrangement Column B. Key Mechanism 30 0. Main Clutch and Motor Switch Control 32 D. Set Keyboard Value into Storage Dials 34 E. Condition Machine for Multiplication Under Control of Storage Dials- 35 (1) Enable Operation of Ordinal Dial Clutches 37 (2) Enable the Drive Means for Returning Ordinal ultiplior Assemblies to a Position 38 (3) Enabling Holding Pawl ior Cam Shaft 946.-- 40 (4) Set Dial Multiplier Control Mechanism 41 (0) Disable Conventional Multiplier Shift Control..- 42 (blslg i sablo Conventional Multiplier Pin Carriage 42 (c)PDisable Conventional Multiplier Segment Feed 43 (11) Condition Register Carriage Right Shift Clutch for Operation 43 (e) Enable Operation of Auxiliary Carriage Shift Mechanism upon Return of the Operative Dial to 44 (1') Enable Incremental Rotation of Cam Shaft 946. 47 (0) Condition the Terminating Mechanism for Opera- 48 tion F. Multiplication Operation 49 This invention relates to a calculating machine, and particularly to an imporved multiplying mechanism therefor.

It is one primary object of the present invention to provide a multiplying mechanism (which can be used in conjunction with the multiplying mechanism described in the patents to Friden, Nos. 2,371,752 of March 20, 1945 or 2,399,917 of May 7, 1946), which is particularly adapted to use :1 value in a register, such as the storage, or back-transfer, register disclosed in the patent of Arthur J. Malavazos, No. 3,045,907, issued July 24, 1962, as the multiplier while using a factor standing in the keyboard as a multiplicand.

Another primary and important object of the present invention is to provide a squaring machine, in which a factor inserted in the main keyboard of a calculating machine is multiplied by itselfin this instance the keyboard value being set from the keyboard into the auxiliary, or storage, register (which, in our present invention, is the multiplier register) without conventional clearing of the keyboard, so that a subsequent depression of a multiplier control key will be effective to multiply the factor by itself.

Another object of the present invention is to provide duplicate multiplying mechanisms, so that a multiplicand factor standing in the keyboard of the machine can be multiplied by a factor inserted in a conventional multiplier storage device, such as those described in the F-riden patents above-mentioned; or selectively, at the will of the operator, to use a product or a quotient which has been registered in the accumulator, or product register, or alternatively in the counter, or quotient register, of a conventional calculating machine. In its preferred form the two multiplier mechanismsare independent, although they use the same controls and are operated 'by the same multiplier control keys. In this instance, the two multiplying mechanisms =are interlocked so that one, and only one, of the two mechanisms can control :a particular operation. In its preferred form, the multiplication mechanism utilizes the operating controls of the Friden patents above-mentioned, and also the three manually operated keys which are effective to initiate multiplication preceded by a clearing of the product register, multiplication without such clearing (commonly called accumulative multiplication), and multiplication without clearing but with the machine operative subtractively rather than additively (commonly called negative multiplication) in order to subtract one product from another already in the register.

In its preferred form, our invention utilizes a calculating machine of the type disclosed in the patent to Friden, No. 2,229,889, issued January 28, 1941, as modilied by the two Friden patents previously mentioned, and the patent of Malavazos No. 3,045,907, which also has been previously mentioned. The calculator of those patents includes two conventional registers: the accumulator, or product, register and the counter, or quotient, register. The above-mentioned Malavazos patent adds a third, or storage register, and a mechanism whereby factors accumulatedin either of the conventional registers can be transferred into the storage register, or into the selection mechanism, or both, at the discretion of the operator. The present invention, in its preferred form, adds a multiplier mechanism to the storage register, so that factors standing in this register may be used as a multiplier factor in a subsequent operation. Thus we provide in one machine a mechanism which greatly extends the usefulness of the conventional calculator, not only by adding an additional register thereto, but also by providing a mechanism by means of which a value transferrcd from either the conventional accumulator or counter register may be used selectively, at the will of the operator, either as a multiplicand or a multiplier.

Another important object of the present invention, therefore, is to provide a mechanism my means of which the factor storage, or back transfer, register can be used as a multiplier to control a multiplication operation.

The present invention is concerned with these primary objects and others which will become apparent from a perusal of the description of the preferred embodiment of the invention, which is shown in the accompanying drawings and in which:

FIG. 1 is a plan view of the machine with which our invention is preferably associated.

FIG. 2 is a longitudinal cross-sectional view of the rear portion of the machine, showing particularly the selection, actuating and register mechanisms of the machine shown in FIG. 1, and preferably of the first order thereof, such as taken along the plane indicated by the line 2-2 of FIG. 1.

FIG. 3 is a rear view of the carriage shifting and register clearing mechanisms with the cover removed, such as taken along the plane indicated by the line 33 of FIG. 1.

FIG. 4 is a cross-sectional plan view of themachinc taken on a plane parallel to the keyboard, with the keyboard removed, and shows particularly the clearing and shifting mechanisms of the present invention.

FIG. 5 is a right-hand view of the control mechanisms on the right side of the machine, with the cover removed, such astaken along the plane indicated by the line 55 of FIG. 1.

FIG. 6 is a cross-sectional view of mechanism mounted FIG. mandis taken along the plane indicated FIG. 8 is a left side view of mechanism mounted upon,

and lying immediately adjacent to, the right side frame; and, in effect, is the reverse side of mechanism shown in FIG. 6.

FIG. 9 is a front view showing details of the multiplic'ation' control key and associated mechanism, such as taken from the transverse plane indicated by the line 9-9 of FIG. 8.

FIG. 10 is a left side view of the automatic shifting and clearing mechanism conventionally placed in the machine with which our invention is associated, showing certain modifications thereof required hy. our invention, and is taken along an intermediate plane, such as that indicated by the line 10-10 of FIG. 4.

FIG. 11 is a right side view of the assembly of mechanisms shown in FIG. 10, such as that taken along the plane indicated by the line *1111 of FIGS. 4.

FIG. 12 is a right side view of. the mechanism mounted upon, or lying immediately adjacent to, the left side frame of the machine, such as that taken along the plane indicated hy the line 12-1-2 of FIG. 1.

FIG. 13 is a front detail of the squaring key taken along the transverse plane indicated 'by the line 1313wof FIG. 12, which, in effect, is an ex-tensionof the plane 9--9 of FIG. 8, so that, in effect, FIG. .13 constitutes the left-hand extension of the mechanism shown in FIG. 9.

FIG. 14 is a plan view of the mechanism of the lefthand side of the machine and approximately is taken along the same plane as that used in FIG. 4, so that FIG. 14 can be considered as an extension of FIG. 4.

FIG. 15 is a left side view of the multiplier control mechanism taken on planes intermediate left side frame and the left side control plate, as indicated by the lines 15-15 of FIG. 14, and, for the most part, shows mechanism conventional in machines of this kind.

FIG. 16 is a plan view of a detail of the shift control mechanism, such as taken along the plane indicated -by the line 16-16 of FIG. 19.

FIG. 17 is a left side view of the left-hand control plate showing, for the most part, conventional multiplying mechanisms in the machine of the present invention, such as taken along a 'planelying slightly to the right of that indicated by line 26-46 in FIG. 14.

FIG. 18 is a right'side view of the means for disabling the conventional multiplier counting mechanism and enabling that associated with the present invention, such as 3 taken along the longitudinal plane indicated by the line 18,-18 of FIG. '14. I

FIG. 19 is a right side view of a detail of mechanism for disabling the conventional multiplier carriage shift mechanism, and is taken along the plane indicated by the multiplication mechanism shown in FIGS. 20 and 21, such as taken along the plane indicated by the line 22-22 of FIG. 20. e a.

FIG. 23 is a left side view of control mechanisms lying to the left of the multiplication mechanism, such-as taken along the plane indicated hy the line 23+23 of FIG. 21.

FIG. 24 is a right side and enlarged view of the highest order of the mechanism shown in FIG; 20.

:FIG. 25 is an enlarged front view of one order of the left-hand side of the multiplication mechanism'shown in FIG. 20. H I

FIG. 26 is a left side view of the machine of the present invention, showing the new multiplication controls superimposed over the conventional'mechanism shown in by the line 26-26 of FIG. '14.

plication operation under the control of the front storage dials.

. I. CONVENTIONAL MECHANISMS The present invention is applied, for purposes of exemplification, to a calculating machine of the general type shown and described in the patent to Carl M. F. Friden, No. 2,229,889, issued January 28, 1941, as modified hy the multiplier patents of Friden, Nos. 2,371,752 and 2,399,9 l'7'of M-arch 20, 1945, and May 7, 1946, respectively, and other patents not here pertinent. This basic construction, inzthe preferred form of the present invention, has been modified and improved by the mechanism shown in the Malavazos patent, No. 3,045,907 issued to one of the inventors herein on July 24, 1962, and relating to the back transfer of values from either the accumulator, or product register, or the counter, or quotient register, into a storage register or the keyboard. However, the invention is not limited to incorporation in that particular machine as it can be incorporated in, or applied to, other :types of calculating machines on the market. It is, therefore, to he understood that the machine shown in the accompanying drawings and described herein is for purposes of exemplification only and that the invention is not limited thereto.

1. General Arrangement (FIGS. 1, 4 and 14) or automatic single cycle, key 53, automatic tabulation control key 55, left shift key 56, right shift key 57, division key '58, keyboard clear key 59, and register clear key 61?.

Them-achine used for exemplification of the present invention also includes a multiplication mechanism, including multiplier value keys 65 arranged as a separate keyboard on the lower left-hand corner of the machine, as shown in FIG. 1 and as described in :the patents to Friden, Nos. 2,371,752 on March 20, 1945, or 2,399,917 of May 7, 1946, and the associated multiplier control keys, such as multiplier key. 66, accumulate multiply key .67, or negative multiplier key 68.

The cover 77 of the carriage B contains a plurality of ordinal-1y arranged windows 7 0, through which are visible the accumulator, or product register, dials 71, and another series of ordinally arranged windows 72 through which are visible the counter, or quotient register, dials 73. In the machine with which our invention is preferably associated, the carriage also carries a pair of manually operated clear knobs 74 and 75 for clearing, or zeroizing, the

'a base (FIGS. 5, 6, 8, 12,15, 17, 18, 26 and 28), right side frame 81 (FIGS. 4 and 8), a left side frame 82 (FIGS. 4 and 14), and a left side auxiliary frame plate 83 (FIGS. 4 and 12). The two

side frame plates

81 and 82 are interconnected and braced by a plurality of

crossbars

84, 85, 86 and 87 near the rear of themachine (FIGS. 2 and 4). Similarly, the front portion of the machine is braced by a crossbar 91 (FIG. 4) which extends between the right frame plate 8 1 and the left side auxiliary frame plate 83. Most of the operating parts are mounted upon this frame, and particularly upon the side frames 81 and 82. To the right of the right side frame 81 is an auxiliary, or right side control, plate 88 (FIG. upon which are mounted most of the control keys and their related mechanisms which are found on the right side of the machine. Similarly, to the left of the left frame plate 82, is an auxiliary, or left side control plate 89 (FIG. 14), and anintermediate plate, or bracket, 90 lying between frame plate 82 and the control plate 89, upon which plates are mounted most of the control keys and control mechanisms related to the multiplying mechanism, aswell as some of the parts utilized in the present invention.

It should be mentioned that, for the sake of brevity, many mechanisms which are conventional in machines of this kind, such as the division mechanism, the dividend entry mechanism, and the like, which are not pertinent to the mechanisms of the present invention, are not described herein. Those parts which are conventional and which are indirectly related to the operation of this machine will be described as briefly as possible; while those mechanisms which are directly related to the operation of our invention, will be described more in detail. It will be understood, therefore, that we assume that our invention will be associated with a fully automatic calculating machine which has conventional features, such as those mentioned; but that, for the sake of brevity, we will limit our description of conventional elements (to those which directly or indirectly relate to the operation of our machine or those mechanisms which must be modified in their operation in order to provide for the most satisfactory operation of the mechanism of our invention. r

2. Keyboard (FIGS. 2 and 7) The value keys 50 and 0 keys 61 are arranged in longitudinally extending ordinal rows and in transversely extending value banks, as shown in FIG. 1. The keyboard, in the preferred form of the machine shown in FIG. 2, comprises a subassembly in which the keys are mounted in a keyboard frame 95, comprising top and bottom plates 96 and 97, respectively, side frames 98 and 99 (FIG. 7), a front plate (not shown), and a rear plate 101. This keyboard frame is held together as a rigid subassembly by means of interlocking the side and end plates with the top and bottom plates, the assembly being held together by suitable tie rods 102. In our preferred form of keyboard, as outlined in the patent, No.

3,045,907, previously mentioned, the various control means related to the keyboard, such as the keyboard clearing mechanism and the keyboard locking mechanism, are contained within the keyboard frame 95. Such mechanisms are operated by parts contained in the main frame which engage operating elements of the keyboard mechanisms, but which do not require the connecting of one to the other. It is conventional to secure the keyboard frame 95 in the machine by resting the rear plate 101 thereof upon the cross-member 84 and bolting the front portion to the main frame A as by means of the tie rod 103 (FIG. 7) inserted through apertures in ears extending through the front of the

keyboard frame plates

98 and 99, and bolted in the left auxiliary and right

side frame plates

83 and 81, respectively.

The value keys 50 comprise a key top, or button, 105 and a key stem 106. The key stems are slidably supported in aligned slots in the top and bottom frame plates 96 and 97, and are biased to a raised position by suitable ing slide being biased to a forward position by a suitable spring, such as leaf spring 113. Each key stem is provided with a rearwardly extending cam nose 1.10, above which is located a latching notch 111. The depression of a key 50 Will cause the cam 110 on the key stem to force the latching slide 108 rearwardly against the bias of its spring until the key stem has been depressed sufficiently to cause the notch 111 to register with the latching slide, whereupon the latch snaps to its forward position to hold the key stem depressed. Whenever a latching slide is moved rearwardly by the depression of another key in that order, or by the operation of any of the key board clearing means, the slide 108 releases the notch 111, whereupon the key stem is snapped to its raised position by the force of its biasing spring 107.

The lower end of each key stem 106 carries a stud, or pin, -112 which engages a differentially angled cam face 212 of one or the other of a pair of selection, or V- notch, bars 210 and 21.1, as shown in FIG. 2. It is conventional in the machine with which our invention is embodied, to provide a pair of selection bars 210 and 21-1, the former serving the lower value keys of that order and the latter the higher value keys. It is obvious that the depression of a value key 50 causes the pin 112 on the lower end of its key stem. to engage the corresponding cam face 212 and, due to the differential 'angularity of the respective cam faces 212, to translate the selection bar 210 or 211 forwardly a differential amount. In view of the fact that the depressed key is latched in its operative, or fully depressed, position, the corresponding selection bar 210 or 211 is latched forwardly in its differential position by the engagement of the pin 112 with a latching notch 213 at the lower end of the cam face, which latching notch closely embraces the pin 112.

3. Keyboard Clearing (FIGS. 6, 7 and 8) It is conventional in this art to provide mechanisms for clearing the keyboard by releasing the latching slide 108, either by operation of the ordinal 0 key 6 1 (which has the cam face to translate the latch rearwardly) or by a mechanism operated by the keyboard clear key '59. Such a mechanism is not pertinent to the present invention and hence will not be described in detail. It will be understood, however, that some suitable keyboard clearing mechanism is provided in the machine of this invention and preferably is of the type disclosed in the patent of Malavanos, No. 3,045,907 already mentioned. Such a full keyboard clearing mechanism in cludes an arm 123 (FIG. 7) rigidly mounted on a transverse shaft 120. On the interior of the keyboard frame 95, the shaft carries a plurality of arms which are operable, upon rotation of the shaft, to move the various ordinal latches 108- rearwardly against the tension of their respective springs 113. The arm 123 is rocked by movement of a slide 126 which is supported for longitudinal movement in the machine by means of slots 128 in the slide, embracing pins '129 carried by the frame plate 81. The forward end of the slide, or link, 126 is formed to lie immediately adjacent the frame plate 81 and is provided with a square stud 119 which extends through an aperture in the frame plate. The rear end of the link 126 carries a stud 127 which engages a shoulder 124' on the lower end of the arm 123, whereby the rear- 7 ward movement of link 126 is effective to rock the arm 123 to release the keys of the keyboard.

It is conventional in the Friden machine with which our invention is preferably associated to provide an add key mechanism which is selectively operable to automatically clear the keyboard with each machine operation. The keyboard mechanism per se is not pertinent to the present invention and hence need not be described in detail. However, when a squaring operation is desired and the squaring key of the present invention is depressed, it is necessary to disable the add key mechanism in the event that itshould have been set in its operative, or automatic clearing, condition, so that the factor inserted in the keyboard will not be erased by the automatic operation of the add key mechanism. Hence, a very brief description of the add key mechanism will be made, and

for this purpose particular reference is made to FIGS. 6 and 8. The square stud 119 is adapted to be engaged by a floating link 15%, the forward end of which is provided with an upturned nose 151. Normally, as indicated in this figure, the front end of the link 150 is resiliently held in an elevated position by a tension spring 161, while the rear end of the floating link is mounted on an arm 152. This arm 152 is pivotally mounted on the right side of the frame plate 81 by any suitable means, such as stud 153. The lower end of the arm 152 carries a stud 154 which extends to the left through an aperture in the frame plate and is adapted to be engaged by a hook 155 on the forward end of a long link 155 (FIG. 8.), depending upon whether the forward end of the link 156 is in the lowered position shown in FIG. 8, or is elevated thereabove. The position of the front end of the link 156 is determined by the operation of the add key by a mechanism not here pertinent and hence not described. The link is operated immediately before the end of a machine cycle by means of a cam arm 157 to which the link is pivotally mounted. The arm 157 is pivoted on the left side of the frame plate 81 by any suitable means, such as stud 153. The lower end of the arm 157 is engaged, just before the end of a cycle, by a stud 159 carried by a disk 160 on the main drive shaft 255. When the link 156 is in its lowered position, shown in FIG. 8, the link in its cyclic reciprocation will engage the pin 154 and thus pull the floating link 1156 (FIG. 6) rearwardly. Such rearward movement of the link 156, so long as its nose 151 is in a position to engage pin 11%, causes the translation of link 126 (FIG. 7) and operation of the keyboard clearing mechanism.

It was mentioned above that it is necessary in squaring operations to disable this clearing mechanism, even though the add key mechanism has been set in its automatic clearing condition. This is conventionally accomplished, in the Friden machine with which our invention is preferably associated, by means of an arm 165 that is pivotally mounted on the frame plate 81 by any suitable means, such as stud 166. The forward end of this arm is provided with a laterally extending car 167 which overlies the tip of nose 151 of floating link 15d. The arm 166 is also provided with a tongue 163 which lies between the jaws 1-69 of a disabling arm 17%. This arm is rigidly mounted on the right end of a transversely extending shaft 171, which shaft is rocked by the control keys for those operations which require the automatic disabling of the add key mechanism. Thus, as will be explained hereafter in connection with the squaring key, the depression of the squaring key will rock shaft 171 (clockwise in 7 4. Selection Mechanism (FIG. 2 i

It has been mentioned that the lower end of each key stem 196 carries a transversely extending pin 112. This 7 V 8 7 pin isadapted to engage a differentially angled cam face 212 formed in one or the other of the selection, or V- notch, bars 210 or 211. It is conventional in the machine with which our invention is shown, to provide a pair of selection bars 219 and 211 for each order of the keyboard, the former serving the lower value keys of that order and the latter the l'n'gher value keys. The pair of bars is preferred to a single one in order to avoid excessive angles on the cam faces 212, which are necessary when these faces represent nine different values. Each of the cam faces 212 terminates in a notch, or pocket, 213 which tightly embraces the corresponding pin 212 when the key is depressed to its locked position, so that the slide 21% or 211 is locked in a differential position by the depression of a key. The bars 219 and 211 are supported for longitudinal movement in the machine by a pair of supporting arms 214 (only one of which is shown in the drawings), and are biased to arearward, inoperative, position by a suitable spring (not shown) conventionally tensioned between each slide and its forward supporting arm 214. it is obvious that the depression of a value key causes the pin 112 on its key stem to engage the corresponding cam face 212, and, due to the difilerential angularity of the respective cam faces, to translate the selection bar 21% or 211 forwardly a differential amount.

The selection bars 21h differ from those shown in earlier machines in that they serve the 1 to 4 keys, while the other selection bars 211 serve the 5 to 9 keys, inclusive. The present arrangement also differs from conventional selection bars due to the fact that there is a double increment, or double increase in angularity, between the notches cooperating with the l and 2 keys, as compared to the others. Thus, there is a double increment of movement of the selection bar 216 between the 1 and the 2 keys, as compared to a single increment between all of the others, for the purposes explained in the Patent No. 3,045,907 above-mentioned.

The selection bars 211 and 211 extend rearwardly (to the right in FIG. 2) and are provided at their rearward extremities with perpendicularly formed

yokes

216 and 217, respectively. These yokes engage in annular slots formed in the collars of a pair of'selection gears 220 and 221, respectively, the gears being slidably but nonrotatably mounted on a longitudinally extending selection, or square, shaft 222. The square shaft 222 is journalled in the crossframe members, or

crossbars

84, 86 and 87, there being one such square shaft for each order of the keyboard. These selection gears 220 and 221 can be arranged on their square shaft in the conventional manner, but we prefer to arrange them in the same manner as in the patent, No. 3,045,907 mentioned, as shown in FIG. 2. In the preferred form of construction, the gear 221 of the odd numbered orders of the keyboard is placed toward the rear of the front section of the square shaft, immediately in front of the crossbar $6. This gear is transposed forwardly on the square shaft from one to five increments corresponding to values of 5 to 9, inclusive. The gear 22%) is placed forwardly thereof, normally lying in a neutral position and transposable forwardly one increment for a value of l, and then three to five increments for values of 2 to 4, inclusive. In the next higher order, the relative position of the selection gears is reversed, the l to 4 gear lying at an intermediate position of its square shaft, while the 5 to 9 gear lies forwardly thereof. All of these gears are moved forwardly differential amounts corresponding to the value of the key depressed, with the exception of the double increment between the 1 and 2 keys heretofore mentioned. Thus, the depression of a value key, by translating one or the other of the selection bars 211) or 211, moves the corresponding selection gear 22h or 221 forwardly on square shaft 222 a differential amount corresponding to the value of the key operated.

Claims

1. IN A CALCULATING MACHINE HAVING AN ORDINALLY ARRANGED VALUE INDEXING MECHANISM, AN ORDINALLY ARRANGED PRODUCT REGISTER, DIGITATION MEANS FOR ENTERING A VALUE DETERMINED BY SAID INDEXING MEANS INTO SAID PRODUCT REGISTER, MEANS FOR SHIFTING THE RELATIVE ORDINAL POSITIONS OF SAID PRODUCT REGISTER AND SAID VALUE INDEXING MEANS, AND A CYCLICALLY OPERATIVE DRIVE MEANS, THE COMBINATION WHICH COMPRISES A ROTATABLE SHAFT, A PLURALITY OF ORDINALLY ARRANGED STORAGE CAMS ROTATABLY MOUNTED ON SAID SHAFT, MEANS FOR ENTERING MULTIPLIER VALUES INTO SAID STORAGE CAMS, MULTIPLIER CONTROL MEANS INCLUDING A FEED MEMBER FOR ROTATING SAID SHAFT, ORDINAL CLUTCHES FOR CONNECTING SAID CAMS TO SAID SHAFT, MEANS OPERATED BY SAID DRIVE MEANS FOR INCREMENTALLY OPERATING SAID FEED MEMBER TO RETURN SAID CAMS TOWARD A "O" POSITION, MEANS FOR SEQUENTIALLY OPERATING SAID ORDINAL CLUTCHES WHEREBY ONLY ONE OF SAID CLUTCHES WILL BE ENGAGED AT ONE TIME, MEANS FOR SENSING THE RETURN OF AN OPERATING ONE OF SAID CAMS TO A "O" POSITON, AND MEANS OPERATED BY SAID SENSING MEANS FOR DISABLING OPERATION OF SAID FEED MEMBER AND THE OPERATIVE ONE OF SAID ORDINAL CLUTCHES, FOR OPERATING SAID SHIFTING MEANS, FOR OPERATING SAID SEQUENTIALLY OPERATING MEANS TO ENABLE THE ADJACENT ORDER CLUTCH, AND FOR INITIATING THE REOPERATION OF SAID FEED MEANS.