US2291949A - Listing adding machine - Google Patents

Description

.A 4, 1942. e. c. CHASE LISTING ADDIN G MACHINE Filed Aug. 30, 1940 3 Sheets-rSheet l Aug. 4, I942.

G. C. CHASE LISTING ADDING MACHINE Filed Aug. 30, 1940 3 Sheets-Sheet 2 1942- G. c. CHASE LISTING ADDING MACHINE 3 Sheets-Sheet 3 Filed Aug. 30, 1940 lllllll. A WE VENTOR George 55 Y Q TTQRNEY enemas Aug. 4, 1942 LES'EHNG ADDING MACHINE George (3. (Chase, South @range, N. .20., assignor to Monroe Calculating Machine C mpany Orange, N. 5.. a corporation oi Delaware Application August to, rare, Serial No. 354.12%

(Cl. assee) 12 (Claims.

The invention relates to adding or adding and listing machines, and more particularly to total taking mechanism therefor.

In taking a total from accumulators equipped with crawl tens transfer gearing it has been customary to rotate the accumulator wheels successively to zero, beginning with the right hand or lower order wheel. One object of this was to subtract any partial tens transfer from a wheel before attempting to adjust a stop into the path of movement of the zero stop on the wheel, since there is no practical way to distinguish between a wheel standing at registering position and one at 9.9, as would be necessary in adjusting the stop into position at one side or the other of the zero stop. Also, the successive zeroizing eliminated certain cramping actions set up in the tens transfer gearing by the spring driven actuator segments.

According to the present invention the accumulator wheels (equipped with crawl tens transfer gearing) are rotated simultaneously to zero in total taking, the first stated objection being overcome by the provision of preliminary aligning means, whereby the wheels are rotated to counteract any excessive partial tens transfer in the accumulator. The cramping action is eliminated by the omission of the actuator segment springs, the actuators being positively driven.

The invention'consists in the novel construction and combination of parts, as set forth in the appended claims.

In the accompanying drawings, illustrating the invention,

Fig. 1 is a right side elevation of the value entering, differential actuator and accumulating means of an adding machine constructed in accordance with the invention.

Fig. 2 is a front elevation of parts seen in Fig. 1.

Fig. 3 is a detail right'side elevation of the differential actuator drive.

Fig. 4 is a right side elevation of the total and subtotal initiating devices. I

Fig. 5 is a detail right side elevation of parts shown in Fig. 1, in positions taken during alignment of an accumulator.

Fig. 6 is an exploded perspective view of the aligning or crawl transfer counteracting devices.

In these drawings the invention is shown as applied to an adding-listing machine similar to that disclosed in United States Patent No. 1,867,- 002, issued to Clyde'Gardner on July 12, 1932, and employing the crawl tens transfer means of United States Patent No. 1,828,180, issued to Clyde Gardner on October 20, 1931. The positive actuation means employed is of the general type disclosed in United States Patent No. 1,202,800. issued to Thomas Carroll on October 31, 1916. The machine may be hand operated, as in the above noted patents, or it may be operated by an electric motor, as disclosed in United States Patent No. 1,932,013, issued to Loring P. Crosman on October 24, 1933.

Accumulation Amounts set up in the keyboard 2W are regis-= tered in one or more accumulators M8 and are set up in the'type bars Bit by means of dif ferential actuators consisting in each denomina= tional order of two levers Gill and 5053 (Figs. 1 and 2) having toothed segments engaging op= posite sides of a pinion Edi.

Each lever 6W is provided with a toothed seg ment with which the pinions 412 of any one or more of a series of accumulators 413 may be engaged, by movement of the accumulator shafts 403. Each lever 610 is also connected with a type bar 6i i, and with a stop bar GIB cooperating with the stem of a depressed key 2|5 to limit the movement imparted to the accumulators and type bar, in accordance with the key value. Each lever 500 is connected with a stop bar 502 which also cooperates with the stem of a depressed key H5 in effecting the desired accumulation. Depression of a key 215 will lift the related column latch 2H3 out of the path of a stop of bar 615, in known manner, the column latches preventing operation of the levers 610 in columns in which no key is depressed.

The pinions 50! are mounted on a shaft 503, which shaft is oscillated during the operation of the machine to give the pinions a fixed degree of oscillatory movement. Shaft 503 is mounted in a frame 8H5 (Fig. 3) pivoted upon the supporting shaft 608 of the' levers Bill, 500. Frame SIG is provided with rollers 504 engaging cam slots of a pair of plates 3l8,(one of which is shciawn in the drawings) fixed upon a rock shaft 30 In the operation of the machine shaft 30! is rocked, either by means of a. hand lever or by power connections, thereby, through cam plate 3I8, oscillating shaft 503 about point 608. During the forward stroke of cam plate M8 the levers Gin and 500 will be carried counter-clockwise with the pinions 5M until the teeth of stop bars H5 and 502 contact with the stem of the depressed key. The teeth of these bars are so arranged with relation to the key stems that the levers It and 500 will be complementally operated, the levels Sill being given a movement corresponding to the value of the depressed key and the lever 690 being given a movement corresponding to the full rearward movement of pinion Bill, less the movement of lever till. The full movement imparted by pinion 59! is somewhat greater than the movement of lever Bill in registering the digit 9. this extra movement being provided for in bar 502, which is given a slightly longer movement in engaging each of the key stems. The purpose of this extra movement will be explained later. In the return stroke of plates Ill, levers Bill and 599 will be moved reversely. against appropriate stops, which will be described in connection with the total taking mechanism.

As is well known in machines of the present Wi and described in Patent No. 1,867,002, hereinbefore referred to, addition is performed on a given accumulator by holding the same disengaged from the actuator segments during the first described stroke of the parts, and by engaging the accumulator with said segments and holding it in engagement during the return stroke. Similarly, subtraction is effected by engaging the accumulator with the segments and holding it engaged during the first stroke and by maintaining it disengaged from the segments during the return stroke.

Total taking A total registered on an accumulator "I is set up in the type bars 8 and printed according to the well known method. That is to say, the accumulator is engaged with the actuator segments, the column latches 2 are all released and the accumulator wheels are rotated subtractively to zero, thus setting the accumulated value in the type bars H, wherefrom it is printed. The accumulator is disengaged during the return stroke, as in subtractive operations. Sub-totals are taken in the same manner, except that the accumulators are maintained in engagement with the actuator segments during both strokes of the operating mechanism, whereby the total, which has been subtracted from the accumulator wheels, is added back into the accumulator after the printing has been effected.

The total key 219, and the sub-total key 218 (Fig. 4) set the accumulator control devices for the appropriate operation, in the manner set forth in Patent No. 1,687,002, and also eflect rocking of a ball "I, thereby releasing the column latches. Each of these keys is also provided with a forward extension overlying a pin fixed in the upper end of a spring retracted slide 505, this slide having at its lower end a shoulder adapted to engage a pin fixed in a crank arm 506 of total setting shaft 591. Lost motion is provided between this pin and shoulder, in order that the column latches will be released before shaft 591 is rocked. Shaft 50'! is provided with a series of cam arms 508 (Fig. 1) adapted, in the depression of the total or sub-total key, to act successively upon the arms 509, one of which arms is related to each differential actuator column. In order to insure that all of the cam arms 59! are effectively operated the total and sub-total keys will remain unlatched until the key stroke is completed, at which time latch "I will become effective to lock the operated key in fully depressed position. Upon the free end of each arm "9 is pivoted a link I. having a stud engaging the diverging slots of a pair of levers Iii, iii. A spring Ill normally holds the rear end of link M9 raised, maintaining contact of lever H2 with a fixed stop III. In the normal position of the parts the slot of lever 5|! extends in the direct line of movement of the stud of link BIB, while the slot of lever II is so disposed that forward movement of link 5H3 will induce clockwise movement of said lever, as viewed in Fig. 1. Lever ill has pivotal connection with an adjustable totaling stop ill, having guiding support upon the shaft 608, and provided with projections related respectively to the different accumulators.

An accumulator 419 being moved into engagement with the actuator segments, and the total or sub-total key depressed, the series of totaling stops II will be moved forwardly by levers lll, each into contact with one of a series of control disks H8, fast upon the wheels of the accumulator. Each of the disks I! is provided with a notch, standing opposite the tooth of the stop 6|! when the related accumulator wheel stands in the zero registering position, one wall of this notch being extended radially to form a zero stop 451. Preferably the periphery of disk II is formed as a snail cam, having a uniform drop from the high point of the zero stop to the low point at the intersection with the other wall of the notch.

As stated, the accumulator wheels are provided with tens transfer mechanism of the crawl type that is to say, each lower order wheel is connected with the next adJacent higher order wheel by ten-to-one ratio gearing. Assuming that a given accumulator wheel stands at 9 and that the next adjacent lower order wheel stands at 8 or 9, it will be obvious that the actual position of the higher wheel will be 9.8 or 9.9, which is substantially the 0 position of the wheel. Therefore, as so far described, the tooth of stop Oil might engage the notch of the higher order cam disk Iii before the accumulator is rotated in which case the accumulator wheel, the lever ill and the type bar 8 would all remain at zero when shaft 30! is operated. Such an action might be permissible if positive zero setting of the accumulator wheels were the only requirement, but would result in an error in operations of total taking, wherein the levers III of the several orders must move in accordance with the numerical total registered by the accumulator wheels.

The levers 5|! are intended to prevent this erroneous operation, by counteracting the fractional tens transfer registration in the higher order accumulator wheel. The slotted connection of levers 5H and 512 with link "0 provides for complemental movement of the levers upon depression of the total key. If lever ill is free to move, spring M3 will hold lever ill in its normal position and lever III will be rotated clockwise. If, on the other hand, lever III is held, lever M2 will be rotated counter-clockwise. If the movement of lever ill becomes obstructed at any instant during the forward movement of link 5"], the remaining movement of the link will effect a corresponding counter-clockwise movement of lever III. It will be noted that when the zero stop of a higher order wheel is in position to be erroneously engaged by stop III. the lower order wheel will stand at 9, 8 or possibly '1, and that consequently the totaling stop II in this lower order will be prevented from making slot of lever 5H and will thereby displace lever 5|! counter-clockwise, as viewed in Fig. 1. This will bring lever 5!! into contact with a pin 5!, fixed in the actuator segment of the higher order actuator lever 6N, advancing the segment and thereby rotating the higher order accumulator wheel far enough in a subtractive direction so that the tooth of stop H3 cannot erroneouslyenter the notch of the related cam disk 5l5. Ob-

viously, a portion only of the fractional transfer registration need be counteracted, in order to allow the stop 6l3 to engage properly on top of the zero stop tooth. 451. For example, if the four wheels of lowest order register a total of 9999, these four wheels would stand at 9.999, 9.99, 9.9 and 9, from left to right respectively, before the total or sub-total key is depressed, and it will be sufficient if the tens, hundreds and thousands wheels are each successively retracted to approximately 9.5 during the'depression of the total or the sub-total key.

Normally, the difierential actuators of the machine stand locked, because of the normal position stops 5 and 5H and the known locating means for the driving elements. In zeroizing the accumulator wheels it is necessary to the elimination of the partial tens transfer values, either by preliminary alignment or during the zeroizing action proper, that the differential actuator lever 6H} and the complementallyoperated levers 509 be operated in opposite direc tions, from normal position. Hence, it is necessary, in zero setting operations, to disable at least one of the normal position stops, allowing an abnormal movement of the related lever. If the tooth of stop M3 were allowed to enter the notch of a wheel standing at 9.9, it would be necessary to free lever M so that it could make .8 or .9 of a step of abnormal (clockwise) movement during the zero setting operation.

In the present construction fractional advance of the actuator lever Gill will rotate pinion M and thereby effect a corresponding retraction of the related actuator lever 500, since shaft 503 is held stationary. To allow for this movement, the normal position stop of each lever 5110, except the lever in the units order, is formed as a lug 5" on an extension of the lower order lever 5l2, so that as lever 5!! is displaced counterclockwise through the controlling action of the lower order cam disk 5|5 the higher order lever 500 willbe permitted a short abnormal (clockwise) movement. There is, of course, no occasion for lever 500 of the units order to make this clockwise movement from its normal position, soythis lever is provided with the usual fixed normal position stop.

The accumulator controls having been set for a totaling operation and the totaling stops H3 engaged with the cam disks 5|5, by the depression of the total or the sub-total key, shaft 3! will be oscillated and the printing effected in the usual manner. The operation may be effected by hand or by motor operation, controlled through the total or sub-total key in known manner.

During the first stroke. of this operation the actuator levers 500 are to be held locked against counter-clockwise movement until the related accumulator wheels have been rotated subtractively to zero, whereupon the totaling stops III will prevent further movement of actuator levers Ill, and the levers 500 will be released so that they may operate during the remainder of the stroke. The locking of levers 509 is efiected by the extensions of levers 5i2, which are provided with lugs 5l8, each lying normally out of the path of movement of a shoulder 5i! of the related actuator lever 500. As previously explained, a lever 5 remains in its normal position after the depression of the total or sub-total key only if the related cam disk 5l5 stands in its zero position. Whenever lever 5|! is moved out of its normal position, 'which is whenever its related cam disk does not stand at zero, lug 5! will lie in the path of shoulder 519 so that lever 500 will not be released for free counter-clockwise movement until cam disk 5l5 has been restored to its zero position.

Theoretically shoulder 519 would extend radially with respect to shaft 608, so that, as the related accumulator wheel is rotated toward zero, lever hi2 would hold actuator lever 50!] against counter-clockwise movement beyond normal position until the totaling stop 6l3 falls into the zero notch of the cam disk. However, it is desired to effect the release of actuator lever 500 positively, rather than to rely upon spring 5l3 to pull the totaling stop 6l3 into the zero notch in effecting the release. Therefore, shoulder 5!!! is set at an' angle, providing for a camming effect upon lever 5l2 during the movement of shaft 593.

As a result of this action, the tendency of spring 593 to swing levers 5H and 5) in a counter-clockwise direction maintaining the related totaling stop 6H3 against the cam disk 5l5 is supplemented by the tendency of shoulder 5!!! to urge lug 5l8 forwardly, which urge becomes a positive driving force when the cam disk 5l5 is arrested in its zero position by the abutment of the zero stop tooth 451 with the related tooth of the totalizing stop 6l3, arresting further countar-clockwise movement of lever Gill and consequently positively driving the tooth of the totalizing stop into the notch of cam disk 5l5. As

'shoulder 5H3 drives lug 5I8 forwardly, lever 500 may move a short distance beyond its normal position in a counter-clockwise direction before the cam disk 5l5 of the related numeral wheel has reached zero position, thus diverting a certain amount of movement of shaft 503 from actuator lever Gill. Therefore, as previously stated, the total movement of shaft 503 must be somewhat more than nine steps.

It may be noted that while each pair of levers 5M and 5I2 are complementally moved during the depression of the total or sub-total key as above described, they act in unison during the rotation of the accumulator wheels toward zero, the two levers of each pair being in effect one rigid member at that time.

Since the totaling stops H3 engage the notches of cam disks 5l5 when the accumulator wheels stand at zero at the end of the forward stroke of the parts, it is necessary to remove said stops before the return stroke of the drive, so that there shall be no interference with the movement of the accumulator wheels in sub-totaling and in other similar operations. The release of totaling stops GB is effected by a cam "51 (Fig. 4) mounted on an arm 3l6 of rock shaft 3!. Cam I61 engages a roller mounted on an arm I65 which is normally spring held in a centralized position. During the forward stroke of the drive arm I" will be rocked clockwise,

as seen in Fig. 4, while in the return stroke the arm will be rocked counter-clockwise, beyondits normal position, bringing a pin in into contact with the slide and rocking said slide about its support Hi to disengage the shoulder of the slide from the pin of crank arm 506. This will allow spring 522 (Fig. 1) to rock the cam arms Bill to normal position, permitting springs M3 to move the links ill rearwardly and return the levers 5H and totaling stops M3 to normal position.

The relation of levers Ill and iii! to the parts with which they function may be summarized as follows: Stop 6|! slides forwardly against cam disk M5. Levers ill and 5|! lie between stop ill and the actuating levers 500, Bill of the same order. Lug N8 of lever H2 acts on lever 50!:

of that same order, and lug 5i! crosses over stop SI! of the related order and lever Bill of next higher order, and acts on lever 500 of that higher order. Pin H6 is mounted on the right hand side of lever Bill of the higher order, passes under lever 5| i, and is acted on by lever BIZ.

The latch 263 is released in well-known manner during the return movement of the operating mechanism, permitting the total or sub-total key to resume its normal position.

While the above described mechanism has been set forth as a device for taking a total or a subtotal in a listing machine, it is apparent that it is also usable as a zero setting device for a register equipped with a tens transfer mechanism of the crawl type in a non-listing adding or calculating machine.

Alignment It may be noted that if the column latches 2 are lifted and shaft 501 is rocked, against the Upon release of shaft 501, springs 522 would.

cause lugs 5" to cam the levers 500 back to normal position and restore the accumulator to crawl transfer condition. Such an arrangement would call for a setting back of the higher order wheel a full tenth of a step for each unit registered in the lower order wheel (for instance from 9.9 to 9 registering position). This, of course, would involve merely the correct proportioning of cam disk ill, and would not affect the proper operation of the parts in total making.

I claim:

1. In an adding machine, the combination with an accumulator comprising wheels provided with zero stops and crawl tens transfer gearing between said wheels, differential actuators including each a power element and primary and secondary elements complementally driven thereby, each primary element having operating connection with an accumulator wheel, and driving means adapted to operate all of the power elements simultaneously; of means cooperating with the accumulator, actuators and driving means to take a total, including totaling stops adjustable into the paths of movement of the zero stops, devices operable to rotate said wheels to counteract partial tens transfers in the accumulator, and elements adjustable by said devices to control the extent of movement of the secondary actuator elements during operation of the drivin 2. In an adding machine, the combination with an accumulator comprising wheels provided with zero stops and crawl tens transfer gearing between said wheels, diflerential actuators including each a power element and primary and secondary elements complementally driven thereby, each primary element having operating connection with an accumulator wheel, and driving means adapted to operate all of the power elements simultaneously; of means cooperating with the accumulator, actuators and driving means to take a total, including a total key, totaling stops yieldably adjustable into the paths of movement of the zero stops, devices controlled by the total key and operable to adjust said stops, cooperating members controlled by the total key and operable upon interruption of said adjustment by engagement of any totaling stops with the peripheral faces of the related zero stops to move said primary elements to counteract partial tens transfers in the accumulator, and elements adjustable by said member to control the extent of movement of the secondary actuator elements during operation of the driving means.

3. In an adding machine, the combination with an accumulator comprising wheels provided with zero stops and crawl tens transfer gearing between said wheels, differential actuators including each a power element and primary and secondary elements complementally driven thereby, each primary element having operating connection with an accumulator wheel, and driving means adapted to operate all of the power elements simultaneously; of means cooperating with the accumulator, actuators and driving means to take a total, including totaling stops adjustable into the paths of movement of the zero stops, devices operable to rotate said wheels to counteract partial tens transfers in the accumulator, and means cooperating with said devices, to lock the secondary actuator elements against operation by the driving means, said locking means being adapted to release each secondary actuator element upon contact of the related zero stop with its totaling stop.

4. In an adding machine, the combination with an accumulator comprising wheels provided with zero stops and crawl tens transfer gearing between said wheels, differential actuators including each a power element and primary and secondary elements complementally driven thereby, each primary element having operating connection with an accumulator wheel, and driving means adapted to operate all of the power elements simultaneously; of means cooperating with the accumulator, actuators, and driving means to take a total, including a total key, totaling stops yieldably adjustable into the paths of movement of the zero stops, devices controlled by the total key and operable to adjust the totaling stops and cooperating members controlled by the total key and operable upon interruption of said adjustment by engagement of any totaling stops with the peripheral faces of the related zero stops to move said primary elements to counteract partial tens transfers in the accumulator, and means including extensions of said members cooperating with said devices to lock the controlled by the total stop andthe 5. In an adding machine, the combinationa with an accumulator comprising wheels provided with notched disks having stop shoulders adjacent the notches and crawl tens transfer gearing between said wheels, difierential actuators including each a power element and primary and secondary elements complementally driven thereby, each primary element having operating connection with an accumulator wheel, and driving means adapted to operate all of the power elements simultaneously; of means cooperating with, the accumulator, actuators and driving means to take a total, including a total key, totaling stops yieldably adjustable into the paths or movement of the stop shoulders, devices controlled by the total key and operable to adjust the totaling stops, and cooperating members key and operable upon interruption of said adjustment by engagement of any totaling stops with the peripheral faces of the related accumulator disk to move said primary elements to counteract partial tens transfers in the accumulator, and means including extensions of said members cooperating with sai devices to lock the secondary actuator elements against operation by the driving means and each operable upon movement of the related totaling stop into the notch of its disk to release the secondary element.

6. In an adding machine having an accumulator comprising wheels provided. with zero stops and crawl tens transfer gearing between said wheels, differential actuators tor said wheels, and driving means for said actuators; means cooperating with the accumulator and actuators to take a total, including totaling stops adjust able into the paths of movement or the zero stops,

cooperating members operable upon interruption of said adjustment by engagement of any totaling stops with theperipheral faces of the related zero stops to move the actuators to counter-act partial tens transfers in the accumulator, a total key, and means operable by said key independ ently of the drive means to adjust each totaling stop and its cooperating member seriatim to align the numeral wheels successively, from lower to higher order, said driving means being operable to move the actuators simultaneously to complete the movement of the wheels to zero.

'7. In an adding machine having an accumulator comprising a series of wheels connected by crawl tens transfer gearing. and diflerential actuators each including a power element and primary and secondary elements complementally driven thereby and provided with normal posi-= tion locators each primary element having operating connection with an accumulator wheel;

snail cams each connected to an accumulator into contact with said wheel, stops movable cams, connections between each stop and the difierential actuator and the secondary element normal position locator of inext higher order, and means for operating said connections independently oi the power elements to disable said locators and impart to each differential actuator a movement limited by the lower order snail cam.

8. In an adding machine having an accumlatqr comprising a series of wheels connected by crawl tens transier gearing, and differential actuators tor said accumulator; snail cams each connected to an accumulator wheel, stops movable into contact with said cams, levers each ensageable with a diflerential actuator, connections between each lever related to the diilerential u actuator of next higher. order and including means for differentially operating the stops and levers, and means for operating said connections to impart to each difierential actuator a movement limited by the lower order snail cam.

9. In an adding machine having an accumulator comprising a series of wheels connected by crawl tens transfer gearing, and differential actuators for said accumulator; snail cams each connected to an accumulator wheel, stops movable into contact with said cams, levers each engageable with a differential actuator, connections between each stop and the lever related to the difierential actuator of next higher order and including means operable to cam the stops and levers difierentially, and means for operating said connections to impart to each differential actuator a movement limited by the lower order snail cam.

10. In an adding machine having an accumulator comprising a series of wheels connected by crawl tens transfer gearing, and difierential actuators for said accumulator; snail cams each connected to an accumulator wheel, stops movable into contact with said cams, levers each engageable with a differential actuator, connections between each stop and the lever related to the diflerential actuator of next higher order, operable to impart complemental movements to each stop'and its related lever, and means for operating said connections successively to impart to actuators of successively higher order movements limited by the lower order snail cams.

11. In an adding machine, the combination with an accumulator comprising wheels provided with zero stops and crawl tens transfer gearing between said wheels, differential actuators including each a power element and primary and secondary elements complementally driven thereby and provided with normal position locators, each primary element having operating connection with an accumulator wheel, and driving means adapted to operate all of the power elements simultaneously; of means cooperating with the actuators and driving means to set the accumulator wheels to zero registering position, including stops adjustable into movement of the zero stops, and means operable to disable certain of the normal position locators to allow abnormal movement of the related actuator elements and to control the extent of movement of the secondary actuator elements.

12. In an adding machine, the combination with an accumulator comprising wheels provided with zero stops, difierential actuators including each a power element and primary and secondary elements complementally driven thereby, each primary element having operating connection with an accumulator wheel, and driving means adapted to operate all of the power elements simultaneously; of means cooperating with the actuators and driving means to set the accumulator wheels to zero registering position, including actuator stopping devices comprising each a primary element adjustable into the path of movement of the related zero stop and a-secondary element adjustable into the path of movement of the related secondary actuator element, and connections operable to adjust the primary and secondary stop eimnents complementally and to permit movement thereof in unison upon contact or the related zero stop with its primary stopping element.

GEORGE 0. cm.

the paths 0!

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