US2969178A

US2969178A - Starr

Info

Publication number: US2969178A
Authority: US
Publication date: 1961-01-24
Anticipated expiration: 1978-01-24

Description

Jan. 24, 1961 STARR 2,969,178

R. W. AUTOMATIC CARRIAGE SHIFTING MECHANISM FOR A CALCULATING MACHINE Filed May 18, 1958 4 Sheets-Sheet 1 Jan. 24, 1961 R. w. STARR 2,969,178

AUTOMATIC CARRIAGE SHIFTING MECHANISM FOR A CALCULATING MACHINE Filed May 18, 1956 4 Sheets-Sheet 2 Jan. 24, 1961 R w STARR 2,969,178

TING MECHANISM FOR AUTOMATIC CARRIAGE HIF A CALCULATING MACHINE 4 Sheets-Sheet 5 Filed May 18, 1956 mag :51,- a lzH nag; I21. :25:

Jan. 24, 1961 R. w. STARR ,9

AUTOMATIC CARRIAGE SHIFTING MECHANISM FOR A CALCULATING MACHINE Filed May 18, 1956 4 Sheets-Sheet 4 United States Patent AUTOMATIC CARRIAGE SHIFTING MECHANISM FOR A CALCULATING MACHINE Robert W. Starr, Danville, Calif., assignor to Friden, Inc, a corporation of California Filed May 18, 1956, Ser. No. 585,900

9 Claims. (Cl. 235--'63) My invention relates to calcuating machines and is concerned more particularly with a provision of improved automatic control means therefor.

-It is an object of the invention to provide a calculating machine with improved mechanism which facilitates conditioning of the machine as a preliminary step to a calculating operation, such as division.

Another object of the invention is to provide a calculating machine with improved mechanism for controlling the tabulation of a shiftable carriage in either direction to a desired position.

Another object of the invention is to provide an improved mechanism in a calculating machine for automatically determining the direction the carriage is to be shifted for tabulation to a desired position.

Other objects and advantages will be apparent from the following description of a preferred embodiment as illustrated in the accompanying drawings in which:

Fig. 1 is a right side elevation of the machine embodying the invention and with the parts in normal position.

Fig. 2 is a plan view of the sensing controls taken on the horizontal plane indicated by the line 2-2 in Fig. 1.

Fig. 3 is a right side elevation similar to Fig. l, with the parts in an operated position and with certain parts broken away or omitted.

Fig. 4 is a fragmentary rear view of the carriage in the machine.

Fig. 5 is an enlarged rear elevational view of the tabulator key controlled members.

Fig. 6 is a fragmentary elevational view taken immediately inside the right side frame and showing the shift direction control means.

Fig. 7 is a detail plan view of the shift direction control rocker and the shift initiating member.

Fig. 8 is an elevational view of the mechanism shown in Fig. 7, the view being taken on a transverse vertical plane indicated by the line 88 in Fig. 7. v

The invention is disclosed as embodied in a calculating machine of the type described in Patent No. 2,531,206, issued to H. Gang, November 21, 1950, wherein the depression of a dividend entry key causes the carriage to be shifted rightwardly to a preselected position, or to the rightmost position thereof. Upon reaching either of these positions, the dividend is automatically entered into the register, or as described in the Patent No. 2,721,698, issued to H. Gang, October 25, 1955, the dividend set on the keyboard is entered into the register if the carriage is in the desired position when the key is depressed. Each of the above-mentioned patents shows an eight-order keyboard with seven tabulator keys, whereas the mechanism herein described is shown as having nine tabulator keys and a ten-order keyboard.

In the calculating machine in which the invention is embodied, the tabulating mechanism is operable only in conjunction with a carriage shift operation initiated by a depression of right shift key 20 or left shift key 21 (Figs. 1 and 3).

Keys

20 and 21 are mounted in the machine frame closely adjacent the plus key 22 and minus Patented Jan. 24, 1961,

ICC

key 23, respectively. Each of the

keys

20 and 21 is provided with a shoulder overlying

respective studs

24 and 25 on the respective stems of plus key 22 and minuskey 23. Hence, a depression of right shift key 20 will effect a depression of plus key 22, and a depression of left shift key 21 will effect a depression of minus key 23. The lower end of each of

keys

20 and 21 is provided with a bifurcation engaging pin 26 on the forward end of lever 27 pivoted at 28 on side frame member 29. At its rearward end, lever 27 has a pivotal connection with vertically disposed arm 30 which is normally urged counterclockwise (Fig. l) and downwardly by spring 31. The arm 30 is formed to provide a shoulder, not identified but shown in Figs. 1 and 3, adjacent the shaft 34. This shoulder underlies an ear 32 formed at right angles to the forward end of latch lever 33 secured on the end of transverse shaft 34 journalled in the framework of the machine. Lever 33 is normally urged downwardly (counterclockwise in Figs. 1 and 3) by spring 35 to a position determined by the shoulder on arm 30, but the arm 30 can be rocked rearwardly (clockwise in these ures) to disengage its shoulder from the car 32 and thus enable lever 33 and shaft 34 to be restored to its normal position by spring 35. At the upper free end thereof arm 30 carries plunger 37, the function of which will be described later.

Normally, a depression of the plus key 22 or minus key 23 would initiate a respective additive or subtractive operation of the machine. However, when key 22 is depressed upon depression of right shift key 20, or when key 23 is depressed upon depression of left shift key 21, either shift key serves to rock lever 27 (counterclock wise in Figs. 1 and 3), raising arm 30 upwardly. There:

1, upon the shoulder on arm 30, through its engagement with ear 32 of lever 33, rocks the lever and shaft 34 clockwise against the urgency of spring 35. The clockwise movement of shaft 34 will result in disengagement of the machine drive from the actuating mechanism and the engagement of the drive with the carriage shifting mechanism. Upon release of a shift key, the mechanism controlled thereby will be restored, eifecting counter-clockwise movement of shaft 34 under the urgency of spring 35 and resulting in denominational termination of the shifting operation. For a more complete description of the foregoing mechanism, reference is to be had to the aforementioned Patent No. 2,531,206.

Means are provided for terminating a right or left shift operation if the carriage is shifted into either of its end positions. For this purpose, lugs 42, '43 (Figs. 1, 3 and 4) are fixed on the rear of the carriage 44 and are so spaced and extend sufficiently from the carriage to overlie the nose of plunger 37 when the carriage is in either of its end positions. If, for example, the carriage is in its left end position (Fig. 1) when the right shift key 20 is depressed, the plunger 37 will be depressed upon engagement with the lug 42, thereby compressing its spring as arm 30 is moved upwardly to rock shaft 34 to engage the shifting mechanism. Immediately ,upon shifting movement of the carriage to the right, lug 42 will be moved out of engagement with the nose of plunger 37, permitting the plunger to be spring-restored to its raised position. If the carriage is permitted to be shifted into its right end position, the nose of the'plunger 37 will engage the camming edge of lug 43 which serves to earn the plunger and therefore arm 30 (clockwise in Figs. 1 and 3) against the urgency of spring 31. As the arm 30 is rocked clockwise, the shoulder thereon is moved from beneath theear 32 on latch lever 33, releasing the lever 33 and shaft 34 for counter-clockwise rotation under the influence of spring 35, thereby terminating the shift op eration. Upon release of the right shift key, plunger 37 will drop below lug 43 as arm 30 is urged downwardly and counter-clockwise by spring 31 to restore the shoulder thereon to its normal position underlying ear 32 of lever 33. Termination of a shift operation at the opposite end position is accomplished in the same manner by lug 42.

Carriage 44 is provided with a series of tabulator keys 45 (Figs. 1, 3, 4 and which are selectively operable to terminate a carriage shift operation in a selected de nominational order intermediate the right and left end carriage shift positions. The lower end of each of the eight left-hand tabulator keys 45 (to the right in Figs. 4 and 5) extends outwardly at an angle to the rear of carriage 44 forming a lug 46, the opposite corners of which are chamfered to displace the plunger 37 upon shifting movement of the carriage in either direction into the ordinal position corresponding to the selected depressed key 45. A depression of any one of the eight keys 45 moves the lug 46 thereon into the same plane as the lugs 42 and 43. The plunger 37 and arm 30 is rocked (clockwise in Figs. 1 and 3) by the effectively positioned lug 46 in a manner similar to th t described in connection with the lugs 42 and 43. Keys 45 are slidably mounted in channelled frame 47 secured on the rear of the carriage 44 by any suitable means and are spaced-apart in accordance with the spacing of the register dials in the carriage. Each of the keys is normally urged to its raised position by an assoc ated spring 48 and may be latched in depressed position by the engagement of a tooth 49 beneath an ear 50 formed at right angles to latch slide 51 which is normally urged to the right (to the left, as viewed in Fig. 5) by a spring means, not shown. The right-hand key 45 (to the left in Figs. 4 and 5) is not provided with a lug 46 and the tooth 52 thereon serves merely to release any one of the eight right-hand keys which has been depressed. Similarly, the depression and latching of any key 45 will release a previously latched key. The termination of a shifting operation in the ordinal position represented by the extreme right-hand key 45 is effected by the lug 42.

In any ordinal position of the carriage 44, those tabulator keys 45 corresponding to the register orders to the left of the order represented by the key (to the right in Fig. 4, which is a rear view), the lower end of which is aligned with the plunger 37, will be considered to be the inboard orders; whereas those keys 45 to the right of the operatively aligned key will be considered to be the outboard orders. In their normally inoperative, or raised, position, the lugs 46 on the keys 45 are above, and out of position for engagement with, the plunger 37 when the carriage is shifted to the right or left upon depression of key 20 or 21, respectively. If a tabulator key 45 has not been depressed and a right or left carriage shift has been initiated by the depression of the

corresponding shift key

20 or 21, the release of the shift key will terminate the shifting operation with the carriage ordinally positioned relative to the selection mechanism in the machine. If the carriage is positioned so that the lug 46 of a depressed tabulator key 45 is aligned with the plunger 37, the subsequent depression of a

shift key

20 or 21 will raise the arm 30 and plunger 37 will yield upon engagement with the lug 46 of the depressed key 45. Under a similar condition, with the carriage in either end position, a shifting operation in the direction of the opposite end may be effected. However, as described in Patent No. 2,721,698 and explained hereinafter, if the carriage is in the position corresponding to the depressed key 45, means become effective to prevent the operation of the shifting mechanism.

The depression and latching of any one tabulator key 45 serves to release a previously depressed and latched key, as explained above. Likewise, the depression of the extreme right-hand (to the left in Figs. 4 and 5) key 45 serves also to release a previously set key, so that all lugs 46 are thereby restored to their inoperative positions with respect to plunger 37, thus enabling the 4 carriage to be moved to the extreme right or left end position where the shifting operation is terminated, as described above.

Dividend entry with selective carriage shift The register clearing operations, fully disclosed in the aforementioned Patent No. 2,531,206, are selectively effected upon engagement of a single cycle auxiliary clear clutch (not shown). The clutch is engaged to clear the lower, or accumulator, dials 54 (Figs. 1 and 3) upon depression of clear key 55, and upon depression of an adjacently positioned clear key (not shown), the clutch is engaged to clear the upper, or revolutions counter, dials 56. The clear keys may be depressed conjointly and thus both clearing operations are effected simultaneously or they may be depressed individually to clear one register or the other. As an incident to the operation of the clear clutch, a shaft 57 is rocked counterclockwise and immediately clockwise to perform operations hereinafter described.

Conjoint depression of dividend entry key 58 (Figs. 1 and 3) with clear key 55 and/or the upper register clear key will be effective to cause engagement of the carriage shift mechanism for a right or left shifting op eration and to release spring-energized lever 59 which causes operation of the dividend entering mechanism. The direction of shifting movement of the carriage is determined by the position of the depressed tabulator key 45 relative to the plunger 37, i.e., whether it is inboard or outboard thereof. The operation of the dividend entering mechanism will be held in abeyance until termination of the carriage shift.

To effect a simultaneous depression of the clear keys with the depression of the dividend entry key 58, the stem of the key 58 is provided with a forwardly extended. arm which overlies a pin on each of the stems of the clear keys. Hence, upon the initiation of a dividend entry operation, each of the registers 54 and 56 are cleared, or zeroized, and the rocking movement of the clear shaft 57 is utilized to effect a right or left shift operation. At its lower end, the stem of dividend entry key 58 is provided with a slot engaged by pin 60 on the forward end of lever 61 pivoted at 62 on side frame 29. Pin 60 normally rests in the lower end of the slot in stem of key 58 and is also normally in engagement with the lower edge of rectangular opening 63 at the lower end of latch arm 64. Latch arm 64 is pivotally mounted at its upper end to the rearwardly extending arm of 1 bellcrank 65 (Figs. 1, 3 and 6) which is pivoted at 66 on side frame member 29. The latch arm 64 is urged (clockwise in Fig. 1) by spring 67 to normally engage shoulder 68 thereof with the edge of plate 69 secured on side frame member 29 to prevent a downward movement of the latch 64 and, by the engagement of pin 60 with the lower edge of the opening in latch 64, to restrain lever 61 from counter-clockwise movement.

Adjacent the forward end of lever 61 (left end in Figs. 1 and 3), the upwardly extended arm of link 74 is pivotally connected. This link is provided with two pins 75 engaged in similar elongated slots in link 76 which is pivoted at its right end to arm 77 secured on clear shaft 57. The pins 75 on link 74 are normally urged by the relatively strong spring 78 into engagement with the rear end of the slots in link 76. Thus, upon depression of either or both clear keys, and hence the counterclockwise rocking movement of arm 77, the spring connection 78 will yield, since lever 61 is held against move ment by the engagement of the pin 60 with the lower edge of the opening in latch arm 64. However, upon depression of dividend entry key 58, pin 79 on the key stern engaging a cam surface on the forward edge of latch arm 64, will rock the arm 64 counter-clockwise, thereby removing shoulder 68 from engagement with plate 69. With the depression of the dividend entry key 58 and therefore both of the clear keys, latch arm 64 smegma is released and the counter-clockwise rocking of shaft 57 and arm 77 will be effective by means of spring 78 to impart counter-clockwise rotation to lever 61. Inasmuch as clear shaft 57 is first rocked counter-clockwise and immediately clockwise to its inoperative position, both the slot in the end of the stem of key 58 and the opening in the end of latch arm 64 are of sufiicient length to permit lever 61 to be restored clockwise to its inoperative position even though key 58 may be held depressed. The depression of the dividend entry key 58 may result in a rightward or left ward carriage shift followed by the dividend entering operation, or, if the carriage is in the position corresponding to a depressed tabulator key 45, the depression of key 58 will cause an immediate operation of the dividend entering mechamsm.

A shift direction control slide 82 (Fig. 6) is slid'ably mounted on the inner side of the right side frame 29. Slide 82 is settable in either of two positions, in which positions it is held by a suitable toggle spring 83. Normally, slide 82 is maintained in the position shown in Fig. 6 to control a left shift operation, or may be moved forward (to the left in Fig. 6) for the control of a right shift operation. Mounted on the rearward end of, and extending downwardly from, slide 82 is a tightly wound spring 84, the lower end of which is not secured but extends through a hole located adjacent the end of one arm of rocker 85 pivotally mounted at 86 on a bracket 87 secured to right side frame member 29. The spring-connected arm extends inwardly of the machine through an aperture in the side frame. Rocker 85 is adapted to be rocked clockwise or counter-clockwise (Fig. 7) in a plane substantially parallel to that of the keyboard, but is normally held in a neutral position by the recess 88 in the lower edge of the lever 89 (Fig. 1) adjacent the rearward end thereof. Lever 89 is pivotally mounted at 62 on right side frame 29 and is normally urged clockwise by spring 90 to resiliently maintain recess 88 in engagement with the outwardly extended arm 91 of rocker S5.

The lower end of an inverted L-shaped arm 94 (Fig. 6) is pivoted at 95 on slide 82 to adjust the slide to the left for the control of a right shift operation of the shift mechanism. Link 96 is provided at its forward end with a right angle form 97 for engagement with the depending arm of bellcrank 65. At its rearward end, link 96 carries two pins 98 spaced-apart longitudinally of the link and engaged in slots in the forward end of arm 94. A spring 99 normally serves to urge the pins 98 into engagement with the rearward end of the slots in the arm 94. Thus, it can be seen that upon downward movement of latch arrn 64, as seen in Fig. 3, when lever 61 is rocked counter-clockwise, the depending arm of bellcrank 65 engaging the ear 97 of link 96 will, through spring 99, adjust the slide 82 to the left (Fig. 6) to initiate a right shift operation. However, if slide 82 is blocked against forward movement (to the left in Fig. 6) from its normal left shift controlling position shown in Fig. 6, spring 99 will yield and therefore the downward movement of latch arm 64 and the leftward movement of link 96 will be ineffective to move the slide 82.

Slide 82 may be held against adjustment from the normal position shown in Fig. 6 when an outboard tabulator key 45 is depressed. For this purpose, an ear 102 formed at right angles to the downward extension of slide 82 intermediate the ends thereof, is provided with an angularly downwardly disposed extension adapted for engagement by an ear 103 on an arm 104 rockably mounted on transverse shaft 105. A link 196 is pivoted at its forward end on arm 104 and at its rearward end on the depending end of an arm 1117 secured on ashaft 108 (Figs. 1, 3, 4 and 6) journalled in right side frame member 29 and at its outer end in a bracket 109 secured on side frame 29. Shaft 108 is adapted to be rocked counter-clockwise as viewed in Fig. 6, by means to be hereinafter described, thereby rocking arm 104 counter-clockwiseto move the 6 ear 103 into blocking position with respect to the downward extension of ear 162. Thus, it can be seen that upon rocking of the ear 103 into blocking relation with ear 102 on slide 82 the leftward movement of link 96 will be ineffective to move slide 82 to its left-hand position so that it remains in the left shift controlling position.

The release of the rocker for clockwise or counterclockwise movement is controlled by the counter-clockwise rocking of lever 61 having lug 110 (Figs. 1 and 3) adjacent its rearward end underlying the lower edge of the rearward portion of the lever 89. Hence, with the rocking of shaft 57 for the clearing operation and the consequent rocking of lever 61, lug 110 imparts a similar rocking movement to lever 89, thereby removing the recess 88 therein from engagement with the arm 91 of rocker 85. Lever 61 is further provided at its rearward end with an upstanding arm having a lug formed thereon and normally positioned just below a rearwardly extended arm of bellcrank 116 of the toggle mechanism 117. Accordingly, when lever 61 is rocked, lug 115 will break the toggle 117 and release lever 59, which would normally initiate an operation of the dividend entry mechanism. However, the rearward end of lever 89 will be rocked into position to block the forward movement of lever 118 (clockwise in Figs. 1 and 3) which, when rocked by means of cam 111. under the control of lever 59, would result in operation of the dividend entry mechanism. Therefore, it can be seen that as long as the lever 89 is maintained in blocking relation with the end of lever 118, the dividend entry operation is held in abeyance. For a more complete description of the dividend entry mechanism reference is to be had to the afore-mentioned Patent No. 2,531,206.

The rocking of shaft 57 also is utilized to control the initiation of a right or left shift operation in accordance with the direction of movement of rocker 85. Arm 119 secured on shaft 57 (Fig. 1) has a pivotal connection with one end of link 121) which, adjacent its rearward end, carries slide 121 resiliently mounted thereon and providing a pivotal connection wtih the lower end of arm 122 secured on the hub 123 of arcuate arm 124 (Figs. 7 and 8). The hub 123 is provided with an annular groove and is slidably and rotatably mounted on stub shaft 125 extending outwardly from side frame 29. To control the lateral movement of the

integral unit

122, 123, 124, arm 126 of rocker 85 carries pin 127 positioned in the annu ar groove of the hub 123. Thus, it becomes apparent that when rocker 85 is rocked in either direction, arm 124 will be moved laterally to the left or right on stub shaft 125. The free end of arm 124 is normally positioned between, and out of contact with,

pins

130 and 131 on the stems of right and left shift keys 2t) and 21, respectively, adjacent the lower end thereof. Normally, during the clearout cycle when shaft 57 is first rocked counterclockwise, arm 119, link 120 and arm 122 rock arm 124 clockwise to a position above

pins

130 and 131. With the immediate clockwise return of shaft 57 to its normally inoperative position, arm 124 is also returned counterclockwise without contacting either pin. However, when the recess 88 in lever 89 has been rocked out of engagement with arm 91 of rocker 85, spring 84 (Fig. 6) will move rocker 85 (clockwise from the position shown in Fig. 7) as the arm 124 is moved to its position above

pins

130 and 131. Upon reaching its extreme clockwise rocked position, arm 124 is moved by rocker 85 to a position overlying pin 1.31 on the key stem of the left shift key 21. Upon return of shaft 57 in a clockwise direction, arm 124, in engagement with pin 131, will depress shift key 21 to initiate a left carriage shift operation. Similarly, if shift control slide 82 is moved to its left-hand position (Fig. 6), spring 84 will bias rocker 85 (counterclockwise as viewed in Fig. 7) to position arm 124 above pin 130 on the key stem of right shift key 20 when clear control shaft 57 is initially rocked counter-clockwise. Thereafter, on return of shaft 57 to its normal position,

'end of the clear cycle, the lower edge of lever 89 will rest upon the outwardly extended arm 91 of rocker 85.

As seen in Fig. 3, rocker 85 has been moved counterclockwise to depress right shift key 20, and the arm 91 has been moved rearwardly (to the right in this figure) of recess 88, so that lever 89 cannot be restored to its latching position until termination of the carriage shift. Lever 118 is therefore blocked against movement to initiate the dividend entry operation until lever 89 has been restored to re-engage the recess 88 with arm 91 of rocker 85.

The left or right carriage shift will be terminated in a position corresponding to a set tabulator key 45, or, when there is no key 45 depressed, the carriage will be shifted to its rightmost position. As an incident to the shiftterminating operation, arm 132 (Figs. 1, 3 and 7) will be rocked (counter-clockwise in Figs. 1 and 3) by a wellknown mechanism to move extension 133 into cam slot 134 in an arm of rocker 85, thereby camming rocker 85 counter-clockwise or clockwise to its centralized position.

Upon centralization of rocker 85, as seen in Fig. 7, arm

124 is moved out of engagement with

130 or 131,

thereby releasing the respective key 20 or 21 to return to its raised position. Consequently, the end of the outwardly extended arm 91 of rocker 85 will be moved to the right or to the left from its active position into alignment for engagement by recess 88 of lever 89 under the urgency 'of spring 90. Thus, rocker 85 is latched in its centralized position against the urgency of spring 84 (Fig. 6), and,

upon restoration of lever 89 to its normally inoperative position, lever 118 is released to initiate the dividend entry phase of'the operation since toggle 117 was broken at the beginning of the operation. The dividend entry operation will thereafter be effected in a well-known manner. During the operation of the registering mechanism, cam follower 135 (Fig. 6) is operated to control the operation of counting finger 136, as fully disclosed in the Patent No. 2,531,207, issued to H. Gang, November 21, 1950. An extension 137 of cam follower 135 is adapted to engage the ear 102 on shift control slide 82 when the slide is in its forward (left-hand in Fig. 6) position, thereby moving the slide to its normal rearward (right-hand) position upon operation of cam follower 135. The shift control means is therefore normally set for a left shift operation if the slide 82 is displaced therefrom.

Means are provided for disabling the shift control mechanism and effecting operation of the dividend entry mechanism upon depression of the dividend entry key 58 when the register carriage is in the ordinal position corresponding to the depressed tabulator key 45. It will be recalled that upon depression of dividend entry key 58, the clearing control shaft 57 functions to rock lever 61 and therefore lever 89 (countenclockwise in Figs. 1 and 3) to release rocker 85 to the influence of spring 84 for the adjustment of arm 124 for operation in conjunction with the register clearing operation to initiate a right or left carriage shift. A carriage shifting operation may be prevented by latching rocker 85 against movement upon release of the recess 88 of lever 39 from engagement with the arm 91 of the rocker.

The upwardly extended arm 140 is provided at its upper extremity with a nose 141 and is integral with an arm 142 rockably mounted as a unit on shaft 108 (Figs. 1, 2, 3, 4 and 5). In the normal clockwise position of arm 140, the nose 141 thereof is positioned immediately adjacent the extremity of the lug 46 of any tabulator key 45 which is not depresesd, providing the carriage is in the position corresponding to the key. However, if the tabulator key 45 is depressed and the carriage is so positioned,

scribed, supra.

the lug 46 thereof will be positioned below the nose 141. Arm 142, integral with arm 140, is provided at its forward end with a recess 143 which is normally positioned above, and out of engagement with, arm 91 of rocker 85. Intermediate its ends, arm 142 carries a pin supporting one end of spring 144, the other end of which is secured on ear 145 formed at right angles to the depending end portion of one arm 146 of lever 147 and urged by spring 144 into engagement with the lower edge of arm 142. Lever 147 is pivotally mounted on side frame 29 and the other arm 148 of the lever is pivotally mounted to one end of link 149, the other end of which is provided with an aperture embracing the ear on lever 61. Thus, it becomes apparent that with lever 61 in its normally inoperative position, lever 147, by means of the engagement of ear thereon with the lower edge of arm 142, maintains arm 140 in the normal clockwise rocked position shown.

If, upon depression of dividend entry key 58, the carriage is so positioned that a tabulator key 45 which has not been depressed is aligned with the nose 141 on arm 140, the clearing mechanism functions to rock levers 61 and 89 counter-clockwise, thereby imparting a clockwise rocking movement to lever 147. Inasmuch as the tabulator key 45, aligned with the nose 141 is not depressed, the nose 141 will engage the lug 46 of the key, thereby blocking

arms

140 and 142 against counter-clockwise movement and causing spring connection 144 to yield. Thus, the recess 143 in arm 142 will not engage arm 91 of rocker 85, thereby enabling rocker 85 to be moved in one direction or the other in accordance with the position of the register carriage, as will be described hereinafter. If the carriage is in a position corresponding to a depressed tabulator key 45, wherein the lug 46 thereof is below the nose 141, the depression of the dividend entry key 53 will be effective to initiate a clearing operation, as de- However, in that event, lever 147 and spring 144 will be elfective to rock arm 142 and therefore arm 140 counter-clockwise, so that the recess 143 will engage the arm 91 of rocker 85, thereby preventing subsequent movement thereof in either direction. With rocker S5 locked against movement, the return of the clear shaft 57 to the normally inoperative position shown in Fig. 1, is effective to restore levers 61 and 89 to their clockwise position, thereby effecting re-engagement of the recess 88 with the arm 91 of the rocker. With the re-engagement of the recess 88 with the arm 91, lever 118 is effective to immediately cause operation of the dividend entry mechanism to transmit a keyboard value into the register 54.

Means are provided to permit a right carriage shift if the carriage is in the left end position. Such means comprises a fixed lug 150 (Fig. 4) positioned in the horizontal plane of the lugs 46 of keys 4-5 when the keys are in their raised position. Nose 141 will therefore block

arms

140 and 142 against counter-clockwise rocking movement (Fig. 1) so that recess 143 remains out of engagement with the arm 91 of rocker 85.

Selective shift control mechanism As stated hereinbefore, when a depressed tabulator key 45 is outboard of the machine, a left carriage shift operation is initiated to effect an ordinal positioning of the carriage corresponding to the key depressed. Conversely, if the depressed tabulator key 45 is inboard of the machine, a right carriage shift is initiated to move the carriage into the desired position. Reference to the right and left shifting movement of the carriage will hereinafter be considered to be relative to the machine as viewed from the front thereof, unless otherwise specified. A series of sensing fingers 154 (Figs. 4 and 5) is rockably mounted on a bracket 155 secured on spacer studs 156 (Fig. 3) which are mounted on channelled frame 47. A sensing finger 154 is provided for each of tabulator keys 45 and are spaced-apart on bracket 155 a distance equal .placed from its desired ordinal position.

lug 159 of the aligned sensing finger 154.

'9' to the ordinal spacing of the keys "45. Each of the sensing fingers 154 except those fingers associated with the left and right end keys 45, is provided with a lateral extension 157. A spring 158 associated with each finger 154 normally serves to urge the finger into engagement with the pin on the ordinally associated key stem securing the lower end of key spring 48 and into engagement with the nose of the extension 157 of the adjacent finger to the right (to the left in Figs. 4 and 5 Thus, it can be seen that upon depression of the third key from the right, the rocking movement of the sensing finger 154 associated therewith is effective to rock each of the sensing fingers to. the left thereof (in a counter-clockwise direction when viewed from the rear as in Figs. 4 and 5). The sensing finger 154 associated with the right end key 45 does not have an extension 157 for the reason that this particular key is never latched in depressed position,

the key serving only as a means for releasing other of the keys which may have been depressed. When there is no key 45 depressed, the sensing fingers 154 assume the position shown in Fig. 4, whereas if any one tabulator key 45 is depressed, such as the third key from the right (to the left in Fig. 5), the finger 154 associated therewith and all those fingers 154 to the left thereof, will be rocked (counter-clockwise in Figs. 4 and 5) by virtue of the oamming action of the spring stud on the stem of the depressed key 45 with the inclined right-hand edge of the associated finger 154 and the engagement of the nose of the extensions 157 on each of the fingers 154 with the adjacent left-hand fingers. Each of the sensing fingers 154 is provided at its lower end with a lug 159 extending outwardly at right angles thereto and having its opposite corners chamfered similarly to the lugs 46 of the keys 45.

As explained hereinbefore, upon depression of the divioend entry key 58 and the consequent counter-clockwise and clockwise rocking of clearing shaft 57, lever 61 and therefore lever 89 are rocked counter-clockwise, as viewed in Figs. 1 and 3, to release the rocker 85 for the control of the shifting mechanism if the carriage is dis- The devices of the invention provide means for predetermining the position of the shift control slide 82 (Fig. 6) simultaneous with the initial rocking of the shaft 57. If the carriage is in the position corresponding to the depressed tabulator key 45, the recess 143 of arm 142 is rocked into engagement with outwardly extended arm 91 of rocker 85 to prevent rocking movement thereof and initiation of the dividend entry phase of the operation is immediately effected.

Lever 147, the rocking movement of which is controlled by the initial movement of lever 61, carries a pin 160 at its rearward end engaging in the bifurcated end of an arm 161 rockably mounted on shaft 108 adjacent thereby providing a resilient connection between

arms

161 and 165. Also secured on shaft 108 adjacent arm 140 is an upwardly extending arm'166, the offset end of which terminates in a nose 167, which, when arm 166 is in the normal clockwise position shown in Figs. 1 and '3, is

"positioned adjacent the outer edge of the lug 159 of an undepressed tabulator key 45 aligned therewith. If there isno tabulator key 45 depressed and the carriage is positioned out of either of its end positions, the carriage is shifted to its extreme right-hand position and the dividend entered in that position. This is accomplished as "follows: The clockwise rocking of lever 147 will rock arm'161 throughpin 160, causing the spring connection 164 to yield since the nose 167 of arm'166 will abut the Similarly,

the spring connection 144 will likewise yield with the abutment of the nose 141 with the lug 46 of the corresponding tabulator key 45. With the depression of the dividend entry key 58 and the rockingof lever 61, pin 60 on the forward end of the lever 61 is effective to move latch arm 64 downwardly, thereby rocking bellcrank 65 in a clockwise direction to move link 96 forwardly (to the left in Fig. 6), and through spring 99 to move the arm 94, thereby positioning shift control slide 82 in its right shift control position. Therefore, the carriage is shifted toward the right, whereupon the lug 43 thereon becomes effective in its rightmost end position to terminate the shifting operation and effect an entry of the dividend into the register dials 54. This operation occurs when the carriage is in an intermediate position and no tabulator keys are depressed.

As explained above, the lug 150 (Fig. 4) on the rear of the carriage 44 serves as a block to prevent a forward rocking movement of the arms 140, 142 (counter-clockwise in Fig. 1). A similar lug 168 (Figs. 4 and 5) is secured on channeled bracket 47 to provide a block for the arm 166 in the leftmost end position of the carriage (the rightmost position in Figs. 4 and 5). Therefore, when the carriage is in its extreme left-hand position and there are no keys 45 depressed, then, upon the depression of dividend key 58, the carriage will be shifted to its rightmost position, whereupon the dividend entry will be effected. This operation is similar to that which occurs if the carriage 44 is displaced to any intermediate ordinal position to the right (i.e., to the left of that shown in Fig. 4), and there are no keys depressed. In the one case, a rocking movement of arm 166 will be prevented by the engagement of the nose 167 thereof with the lug 168 on the bracket 47, and in the other by the lug 159 of the finger 154 associated with the aligned key. Under either condition. the carriage will be shifted to its rightmost position (left-hand as viewed in Fig. 4), in which position the dividend entry is effected.

If a tabulator key 45 corresponding to an inboard ordin l position of the carriage is depressed, that is, the car riage position corresponding to the key is to the left of the desired position, a right shift is initiated and the carriage is therefore moved to the right in the same manner, and by the same means, as outlined above. In this event, the shifting to the right continues until the carriage is moved into the desired ordinal position, whereupon the lug 46 of the depressed key cams the plunger 37 rearwardly (clockwise in Fig. 3) to terminate the shifting operation and to initiate operation of the registering mechanism. Conversely, if a depressed tabulator key 45 is positioned outboard of the machine, e.g., the third key from the left, as seen in Fig. 5, the depression of the dividend entry key 58 will initiate a register clearing operation, during which lever 61 and therefore lever 89 are rocked counter-clockwise to impart a clockwise rocking movement to lever 147. In the event an outboard tabu lator key has been depressed, rocking of lever 147 causes spring 144 (Figs. 1 and 3) to yield, since the nose 141 of arm abuts the lug 46 of the aligned key. The rocking of lever 147 is effective, however, to

rock arms

161 and 166 counter-clockwise since the lug 159 of the rocked sensing finger 154 associated with the depressed key 45, and all higher orders, is moved out of blocking relation with the nose 167 of the arm 166. Inasmuch as arm 166 is permitted rocking movement, arm 107 (Fig. 6) moves link 106 to the rear (to the right in this figure), thereby rocking arm 104 to move the ear 103 into blocking relation with the lug 102 of the shift control slide 82. Simultaneously, with the rocking movement of the ear 103 into blocking relation with the lug 102, the initial counter-clockwise rocking movement of the lever 61 is effective (to move link 96 to the left in Fig. 6), causing the spring connection 99 to yield. It will be recalled that immediately following the counter-clockwise rocking movement of the clearing shaft 57 it is restored clockwise to its normal position, thereby returning lever 61 clock- Wise to its inoperative position. With the return of the lever 61, tensioned spring 99 restores link 96, bellcrank 65 and latch arm 64 to their normally inoperative position immediately prior to the movement of the ear 103 out of engagement with the lug 102. The toggle spring 83 is therefore effective to maintain the shift control slide 82 in its left shift control position, wherein rocker 85 is rocked (clockwise in Fig. 7) to move the arm 124 over the pin 131 so that, upon restoration of shaft 57 to its inoperative position, the arm 124 is effective to depress the left shift key 21, thereby initiating a left shift operation. In the situation shown in Fig. 5, the carriage 44 Will thereafter shift one ordinal space to the right (to the left as viewed from the front of the machine), whereupon the lug 46 of the depressed key engages plunger 37 to terminate the shifting operation and enable the registering mechanism. Likewise, if the carriage is so positioned that the depressed key 45 is in any outboard position (to the left when viewed from the rear as in Fig. the carriage will be shifted ordinally to the left (right in Fig. 5) in accordance with the ordinal displacement of the key relative to the plunger 37.

In the machine of the Patents No. 2,531,206 and No. 2,531,207 herein referred to, levers 61 and 8% are rocked by manual depression of the dividend entry key 58, While in the machine in which the invention has been disclosed, this operation is performed by power from the clear clutch, as described in Patent No. 2,721,698. Furthermore, in the present disclosure, the adjustment of the shift direction control slide 82 is also effected by power from the clear clutch. Operations other than these which cooperatively relate with the operations of the mechanisms of the invention are performed as fully disclosed in the reference patents.

I claim:

1. In a calculating machine having a selection mechanism, a shiftable carriage, a shifting mechanism for ordinally shifting said carriage in either direction relative to said selection mechanism, means operable to terminate operation of said shifting mechanism, means controlled by said carriage in either end position thereof for effecting o eration of said terminating means, a plurality of settable tabulator keys mounted in said carriage each representative of an ordinal position of said carriage relative to the selection mechanism and operable in set position to effect operation of said terminating means upon movement of said carriage into the position corresponding thereto, means positionable selectively in either direction from a neutral position to effect operation of said shifting mechanism to move said carriage to the left or right, a latch for retaining said positionable means in a neutral position, adjustable means for controlling the positioning of said positionable means and normally operable to move said last-mentioned means for a left carriage shift operation upon release of said latch means, a control key, control means rendered operable by said key for releasing said latch means, and means normally operable by said control means to adjust said adjustable means for a right shift operation, means for determining the effective operation of said adjusting means comprising a sensing member, a resilient means rendered operable by said control means for controlling the operation of said sensing member, means operable by said resilient means upon operation of said sensing member to lock said adjustable means in its normal position, and a blocking member associated with each of said tabulator keys normally effective to block operation of said sensing member, each of said keys being operable upon setting thereof to move the associated blocking member and the blocking members associated with the adjacent higher order keys out of blocking relation With the said sensing member to thereby enable operation of said sensing member and said locking means when said carriage is in a position to the right of that corresponding to the set tabulator key.

ranged selection mechanism, an ordinally shiftable carriage, an ordinally arranged register in said carriage, mechanism for shifting said carriage in either direction relative to said selection mechanism, means in a preselected ordinal position relative to said selection mechanism for terminating operation of said shifting mechanism, adjustable means normally positioned to control operation of said shifting mechanism to shift said carriage in a predetermined direction, a control key, and resilient means rendered operable by said key upon manipulation thereof to adjust said adjustable means for the'control of said shifting mechanism to shift said carriage in the opposite direction, tabulator means cooperating with said adjustable means for selectively determining the direction of shifting movement of said carriage comprising the combination of a plurality of settable tabulator keys each representative of an ordinal position of said carriage with respect to said selection mechanism and each operable in its set position to effect operation of said terminating means upon movement of said carriage into the ordinal position of the carriage represented by the set tabulator key, movable means operable to lock said adjustable means against adjustment upon operation of said control key, -a positionable member for each tabulator key, means operated by the operation of a tabulator key for moving its respective positionable member and all higher order positionable members from a normal position, means for sensing the position of the positionable member in the preselected ordinal position, and means controlled by said sensing means for controlling operation of said movable means.

3. In a calculating machine having an ordinally arranged selection mechanism, an ordinally shiftable carriage, an ordinally arranged register in said carriage, mechanism for shifting said carriage in either direction relative to said selection mechanism to align selected orders of said register with said selection mechanism. means for terminating operation of said shifting mechanism, adjustable means normally positioned to control operation of said shifting mechanism to shift said carriage to the left, a control key, and means rendered operable by said key upon manipulation thereof to adjust said adjustable means for the control of said shifting mechanism to shift said carriage to the right, tabulator means cooperating with said last named means for selectively determining the direction of shifting movement of said carriage comprising the combination of a plurality of settable tabulator keys each representative of an order in said register that may be aligned with a predetermined order of said selection mechanism and each operable in set position to effect operation of said terminating means upon movement of said carriage into the ordinal position represented by the set key, a positionable member cooperating with each of said tabulator keys each operable by the associated key upon setting thereof to be moved from an operative to an inoperative position and to move all higher order members to an inoperative position, positionable means normally ineffective to lock said adjustable means against adjustment upon operation of said control key, and means for sensing the operative or inoperative position of the positionable member representative of the order in said register coordinally aligned with the predetermined order of the selection mechanism and operable upon sensing the inoperative position of said sensed positionable member to control the effective positioning of said positionable means.

4. In a calculating machine having an ordinally arranged selection mechanism, an ordinally shiftable carriage, an ordinally arranged register in said carriage, mechanism for ordinally shifting said carriage in either direction relative to said selection mechanism, an adjustable means normally operable to control the direction of operation of said shifting mechanism in one direction and adjustable to control such shifting in the opposite spear-vs 13 direction, a control key, means operated by said control key for initiating operation of said shifting mechanism, means operable to terminate operation of said shifting mechanism, and a plurality of settable tabulator keys each representative of an ordinal position of said register and each operable in set position to operate said terminating means upon movement of said carriage into the ordinal position of the carriage corresponding to the set tabulator key, a control means for adjusting of said adjustable means in accordance with the ordinal position of the terminating means relative to the ordinal position represented by a set tabulator key which comprises a positionable member associated with each of said keys,

said members being operated by manipulation of the associated tabulator key to be moved from a normal position to a second position and to move all higher order members to their second positions, means for sensing the position of the member corresponding to the ordinal position of the terminating means, and means operated by said sensing means for disabling adjustment of said adjustable means and thereby shifting said carriage in the mechanism, an adjustable means operable to control the direction of operation of said shifting mechanism, settable means normally effective to adjust said adjustable means for controlling a shifting operation in one direction and upon setting thereof to adjust said adjustable means for controlling a shifting operation in the other direction, manually operable control means operable to initiate operation of said shifting mechanism in accordance with the setting of said settable means, yieldable means normally operable by said control means to set said settable means, means movable into position to lock said settable means and thereby prevent operation of said yieldable means, and a plurality of settable tabulator keys in said carriage, each key being representative of an ordinal position of said carriage relative to said frame and operable in set position to effect operation of said terminating means upon movement of said carriage into the positIon in which a set one of said keys is substantially aligned with the shift terminating means, the combination comprising positionable members mounted in said carriage respectively adjacent each of said keys, means operated by each of said keys upon setting thereof to move its respective member and all higher order members from a first position to a second position, and a sensing means rendered operable to sense the position of the positionable member for the key substantially aligned with the shift terminating means and operative when sensing one position of said positionable member to operate said locking means.

6. In a calculating machine having a frame, an ordinally arranged selection mechanism in said frame, an ordinally shiftable carriage, mechanism for ordinally shifting said carriage in either direction, an adjustable member for determining the direction of operation of said shifting means, means mounted in said frame in a preselected ordinal position relative to said selection mechanism and operable to terminate operation of sad shifting mechanism, an ordinally arranged register in said carriage having some orders lying inboard of said terminating means and others which may lie outboard thereof, a plurality of ordinally arranged settable tabulator members in said carriage, each operable in set position to effect operation of said terminating means upon movement of said carriage into the position corresponding to the coordinal alignment of the set tabulator member with the 14 terminating means, a control key, and a shift initiating means operated by {said control key and operative to initiate'operation of said shifting mechanism, a means for automatically adjusting said adjustable member to control the direction of operation of said shifting mechanism to shift said carriageiin a direction determined by the relative inboard or outboard position of a selectively set one of said tabulator members with respectto said terminating means comprising means for latching said adjustable member in'an inoperative position, means for sensing the set position of the one of said tabulator members corresponding to the ordinal position-of the terminating means,

means operated by a se't tabulator member lying outboard of said sensed tabulator member for simulating a set position of the sensed tabulator member, means for controlling the adjustment of said adjustable member in accordance with the operation of said sensing means, and

control means operable to initiate operation of said sensing means, to release said latching means, and to initiate the operation of said automatic adjusting means.

7. Ina calculating machine having a frame, an ordinally arranged selection mechanism in said frame, an ordinally shiftable carriage, mechanism for ordinally shifting said carriage selectively in either direction, means mounted on said frame in a preselected ordinal position relative to said selection mechanism operable to terminate operation of said shifting mechanism, an ordinally arranged register in said carriage, a plurality of ordinally arranged settable tabulator members in said carriage, each operable in set position to effect operation of said terminating means upon movement of said carriage into the position corresponding to the coordinal alignment of the set tabulator member with the terminating means, a control key, an'daninitiating means adjustable from an ineffective position to either of two effective positions to initiateoperationof said shifting mechanism to shift-said carriage in one direction or the other direction, means for latching said initiating means in its ineffective position, and means settable from a normal postion for adjusting said adjustable means for controlling a shifting operation to the right to a position for controlling a shifting operation to the left, a control means for releasing said latching means to enable the initiation of an operation of said shifting mechanism to shift said carriage in a direction determined by the setting of a said settable tabulator member which comprises means for sensing Whether a set tabulator member lies to the right of the terminating means, means rendered operable by said sensing means to prevent movement of said settable means from its normal setting when the ordinal register position of said carriage corresponding to the set tabulator member is to the right of said terminating means and to enable movement of said settable means when the ordinal register position of said carriage corresponding to the set tabulator member is not to the right of said terminating means, and means enabled by said control means to set said settable means upon operation of said disabling means.

8. In a calculating machine having a frame, an ordinally shiftable carriage mounted on said frame, mechanism for ordinally shifting said carriage selectively in either direction, means mounted in a predetermined ordinal position in said frame and operable to terminate operation of said shifting mechanism, an ordinally arranged register in said carriage, a plurality of ordinally arranged settable tabulator members in said carriage each corresponding to an ordinal position of said carriage with respect to said terminating means and each operable in set position to effect operation of said terminating means upon movement of said carriage into coordinal alignment of the set tabulator member and the terminating means, a control key, an initiating means adjustable from an ineffective position to either of two effective positions to initiate operation of said shifting mechanism to sh'ft said carriage in either direction, means for latching said initiating means in ineffective position, a shift aoeanvs direction control member normally operable upon release of said latching means to resiliently adjust said initiating means to a right shift position and selectively settable to adjust said initiating means to the left shift position, and a control means for releasing said latching means to enable the operation of said initiating means in accordance with the setting of said shift direction control member, a mechanism for determining the setting of said shift direction control member comprising a locking member movable into engagement with said shift direction control member to lock the same in its normal position, a positionable member adjacent each of said tabulator members operable by the respective tabulator member to be moved from a normal to an adjusted position and to .move all higher order members to their adjusted positions,

a yieldable' element normally operable by said control means to set said shift direction controlmember to a right shift condition and rendered inoperable by said locking means upon operation thereof, a resilient operating means controlled by said control means, a sensing member effective to be moved by said resilient operating means to sense the normal or adjusted position of the positionable member operable by the tabulator member coordinally aligned with said terminating means and operable upon sensing the adjusted position of said positionable member to enable the operation of said locking member upon operation of said control means and operable upon sensing the normal position of said positionable member to disable said locking member and thereby enable operation of said shift direction control member.

9. In a calculating machine having an ordinally arranged selection mechanism, an ordinally shiftable carriage, an ordinally arranged register in said carriage, mechanism for shifting said carriage in either direction relative to said selection mechanism, means in a preselected ordinal position relative to said selection mechanism for terminating operation of said shifting mechanism, adjustable means operable normally to control operation of said shifting mechanism to effect a shift of said carriage in one direction and adjustable to control operation of the shifting mechanism in the other direction, a control key, resilient means rendered operable by said control key for adjusting said adjustable means, and a plurality of ordinally arranged settable tabulator keys in said carriage each representative of an ordinal position of said carriage with respect to said selection mechanism and each operable in its operated position to effect operation of said terminating means upon movement of said carriage into the ordinal position of the carriage representative of the coordinal alignment of the set tabulator with the terminating means, means for selectively determining the direction of shifting movement of said carriage comprising the combination of a positionable member for each of said tabulator keys each operable by the associated key upon manipulation thereof to be moved from a normal to an operated position and to move all higher order members to their operated positions, means for sensing the position of the positionable member coordinally aligned with the terminating means, means for holding said adjustable means in its normal position, and means controlled by the sensing means when sensing one position of that positionable member to enable said holding means to hold said adjustable means in its normal position and when sensing the normal position of such positionable member to enable said resilient means to adjust said adjustable means to its other position.

References Cited in the fil: of this patent UNITED STATES PATENTS 2,216,636 Webb Oct. 1, 1940 2,365,324 Avery Dec. 19, 1944 2,531,206 Gang Nov. 21, 1950 2,531,207 Gang Nov. 21, 1950 2,721,698 Gang Oct. 25, 1955 OTHER REFERENCES Ser. No. 288,057, Eichler (A.P.C.), published May 25,