US1374762A - Calculating-machine - Google Patents

Description

A. F. POOLE. v

CALCULATING MACHINE.

APPLICATION FILED lum/21l I9I3.

Paten'd Apr. 12, 1921.

5 SHEETS-SHEET I.

@ggf

Y MME:

A. F. POOLE.

CALCULATING MACHINE- APPLICATIGN FILED JULY 21.1913.

A.' F. POOLE.

CALCUL/mms MAcHlNE.

APPLICATION FILED JULY 21,'1913.

1,374,762. Patented Apr. 12, 1921.

5 SHEETS-SHEET 3.

iiii'iii- -llmlmnmuumnl ll-l A. F. POOLE.

CALCULATING. MAQHINE. APPLlcAloNF|LED1uLY21.1913.

1,374,762. Patented Apr. 12, 1921.

5 SHEETS-SHEET 4| UNITED STATES PATENT OFFICE.

ARTHUR F. POOLE, OF CHICAGO, ILLINOIS, ASSIGNOR, BY MESNE ASSIGNMENTS, T0

REMINGTON ACCOUNTING MACHINE CORPORATION, OF NEW YORK, N. Y A COR- I PORATION 0F NEW YORK.

CALCULATING-MACHINE.

Specification of Letters Patent. Patented Apl'. 12, 1921.

Application lea July 21, 1913. serial No. 780,408.'

T o all whom t may concern.'

Be it known that I, ARTHUR F. POOLE, of Chicago, county of Cook, and State of Illinois, have invented certain new and -useful Improvements in Calculating-Machines, of which the following is a specification.

My invention is an improvement in algebraic totalizers for use in calculating machines.

One of the objects of my invention is the y provision of a totalizer with but a single set of carrying mechanism from which the accurate total of a series ofitems, whether the same be positive or negative, Iwhich total I will hereafter call an algebraic total, may be read.

Another object of .my inventionl is the provision of a totalizer showing the algebraic total on either one or the other of two sets of figures and having an automatic means to designate which `set of figures shall be read.

Another object of my invention is the provision of a totalizer having a single set of reversible carrying gears and two sets of -gu'res paired 0--9 associated therewith,

automatically Operated means designating which set of figures shall be read and means automatically inserting a unit in the totalizer after the last digit of the number in- .serted has been entered.

'and easy to manufacture.

These and other objects of my invention are described in the accompanying specification, in the drawings of which- Figure 1 is a section onthe line 1-1 of Figj2.

Fig. 2 is a section on the line 2-2 of Fi 1.

lFig. 3 is a bottom view of mechanism in the right side of Fig. 2.

Fig. 4 is a section on line 4--4 of Fig. 2. Fig. 5 'is an elevation showing the arrangement of the carrying and carryable gears.

F ig. 6 is a section on line 6-6 of Fig. 2. 0 Figs. 7 and 8 are details of the units adding mechanism.

Fig. 9 is a perspective view.

As above stated, my invention .is particularly designed to be used in connection with the calculating machine described in the aforementioned patent. Reference thereto will show a totalizer mounted on a. typewriter carriage, a set of numeral keys, any one of which serves to Operate a master wheel and master dog numbered 40 and 142, respectively, therein, also that the operating of any numeral key results in the master wheel 40 and the master dog 142 moving in the following sequence:

(a) .Dog 142 moves in a counter-clockwise direction (Fig. l), thus unlocking the .chain of the totalizer gears at the actuated gear.

(b) The master Wheel rotates an amount depending on the key actuated.

(c) The dog returns to its original position.

(d) The carriage escapes, bringing the totalizer wheel of the next lower Order into engagement with the master wheel. A reversing handle is also provided whereby the direction of motion of the master wheel consequent upon the actuating of any key will be determined and thus numbers inserted in the machine either additively or subtractively. I i

Since the mechanism for producing these motions is very thoroughly described in the patent referred to, I shall not now enter into a further description of such mechanism, but shall premise that the actuating Of a typewriter numeral key results in the master wheel, master dog and carriagemoving in the sequence recited above. The master wheel numbered 40 and the masterl dog 142 in my present application correspond in position and function tothe master wheel and master dog bearing the same numbers iii3 the cited patent of Wahl referred to a ove.

The mechanism constituting the totalizer Vof my presentinvention is suitably supported between three plates 10, l1 and 12. The plates 11 and 12 serve for the support of totalizing mechanism similar in construction to that shown in the totalizer of the above mentioned Wahl patent. This consists of a set of carrying gears 13 (Figs. 2, 3 and 5) loosely mounted on a shaft 14 rigid between the plates 11 and 12 and which are adapted to vcoperate serz'atim with the master wheel 40 rotatably mounted in the framework 63. A set of carryable gears 15 (Fig. 5) are pivoted at 16 on a set of swinging arms 1.7. rlhese arms are loosely mounted on shafts 18 and 19 and their associated carryable gears 15 serve to connect the carrying wheels13. Arms 17 have heels 20 adapted to be engaged sem"- atz'm by the master dog 142. rlhe carrying gears 13 are provided with the usualcarrying teeth which coperate with the carryable gears 15 and thus transfer the tens at the proper time. The chain of gearing composed of/the carrying gears 13 and the carryable gears 15 -is normally locked. llnorder for the master wheel to operate on a carrying gear at the middle ofthe chain the masterdog 142 acts on a swinging arm 17, thereby raising the carryable gear 15 mounted thereon out of mesh with the carrying gears 13 to the right and left, thus unlocklng the actuated carrying gear 13 from the next one to the right.

3 The totalizer is mounted on a truck 21 moving with the typewriter carriage. Numbers are inserted in the totalizer by the master wheel one digit at a time, beginning with the digit in the highest place and ending with the digit in the units place. During the insertion of a number the typewriter carriage escapes step by step to the left after the insertion of each digit, thus bringing successive carrying gears 13 into mesh with the master wheel 40 and'isuccessive swinging arms 17 in a position to be acted on by the master dog 142.

The foregoing will be recognized as sub,- stantially the operation and structure of the totalizer in the above stated Wahl patent. The parts which are peculiar to my present invention are those whichhave to do with the indicating of positive and negative totals.

vThe function of these parts and the parts themselves will now be described.

It is well known that when a totalizer having a `single set of reversible carrying mechanism is provided with two sets of figures whereby algebraic totals may be read and further that when these'figures lare paired in the relation of 0-9 8-1, et

i cetera, an extra unit must be-added to the set of figures to be read each time the totalizer asses throughy zero in either direction. or instance, yassuming that a positive total is exhibited by one set of figures and that a greater number than the exhibited number is'subtracted, the set of figures which heretofore had been exhibiting the positivel total would now change to a I and 25.

number preceded by a series of 9s, 'which number would be theA correct arithmetical complement of the negative total.v A number preceded by'a series of Os would be exhibited by the set of figures from which the negative total is read but this latter number,

owing tothe wheels being paired in the relation of 9 0 would be one unit le'ss than and 12, are the two sets of number wheels 24 These number wheels 24 and 25 y have their figures arranged to progress in opposite directions and the figures are so arranged that positive totals will be read on the number wheels 24 and negative totals I shall first describe the shutwill be read on the number wheels 25. A set of idlers 26 loosely mounted on shaft 27 rotatably mounted in the side plates 10, 11 and 12 (F ig. 2) communicates the motionof the carrying gears 13 to( the number wheels (Figs. 1 and 4). Loosely mounted on the shafts 22'and-23 are two shutters -28 and 29 for the positive and negative number wheels respectively. These sh-utters 28 and 29 are` in the form of bails (best shown in Fig. 2),.

andthe leftends of these bails are formed into gearteeth 3() and 31 which mesh with an idle wheel 32 rigidly attached to the shaft 27. A special carrying gear 33 rotatably mounted on the shaft 14 is in mesh with the idler 32 and this .gear 33 is connected by a carryable gear 34 t'o the carrying gear 13 in the highest decimal( place of the totalizer. The carryable gear 34 is exactly like the carrying gears 15. A carryable tooth` on the next carrying gear 13 to the right of thev gear 33 (Fig. 5) serves to actuate thegear 34 whenever the totalizer passes through zero. A spur gear forming a part of the gear 34 is in engagement -with the gear 33 and turns it whenever the gear 34 is turned by the gear l 13 adjacent to the right. Exactly like the right. The gear 33 has some o f its teeth cut away, as shown in Flg. 4, so as to) avoid interference with the master wheel. Whenever the totalizer passes through zero the carrying wheel 13 in the highest decimal place, of course, moves. This motion is transmitted 'by means of the carryable gear 34 to the gear 33 and by it through the idler 32 to the shutters 29 and 28.

The shutters 29 and 28 register. with suitable Windows 35 and 36 in a cover 61 to thus conceal one or the other of the sets of number wheels 24 and 25. When the shutters are in the position shown in Fig. 4 the figures on the positive set of wheels are exhibited, and when the shutters are moved to their alternate position by means of the totalizer passing through zero the shutter 28 will move in front of the window 35 and the shutter 29 will move away from the window 36, thus exposing the numbers on the negative set of number wheels.

From the foregoing it will be obvious that whenever the totalizer passes through zero the position of the shutters will be changed and thus expose the total on the wheels 24 or 25 according as said total is positive or negative, but, as previously stated, such a total is wrong by one. YIshall now describe the mechanism for inserting this unit in the last decimal place of the totalizer subsequent to the insertion of the number which caused the totalizer to pass through Zero.

Referring to Figs. 1 and 2, it will be noticed that to the right of the carrying wheel 13l in the last decimal place of the totalizer is a segmental gear 37, which is rotatably mounted on the shaft 14. Rigid in this segmental gear 37 are two pins 38 and 39 which project through suitable openings 'in the side plate 11. A carryable gear 62, which is r'nounted on a' swinging arm 17 and is similar to the other carryable gears 15 previously referred to, connects ythis segmental gear with the carrying wheel 13 in v vthe units place of the totalizer. A dog 41 rotatably mounted on the shaft 18 and held in engagement with the segmental gear 37 40 by a spring 42 serves to lock the segmental gear in place. I t will now be seen that any rotation ofthe segmental gear 37 will be transmitted through the carryable gear 62 v to the carrying wheel 13 in the units' Place of the totalizer. A gear 43 is rigid with `the shaft 27. It will be remembered that this shaft is moved every time the totalizer lpasses through zero. The gear 43 engages a gear 44 rigid on a shaft 45 which is pivoted between the plates 10 and 11. -Rigid on the same shaft is the arm 46 having pivoted on it at 47 a cam 48. This cam has two surfaces 49 and 50 adapted to contact with the pins 38 and 39 and also-'a slot 51 in which moves a pin 52 rigidly mounted in a lever 53 rotatably mounted'; en the shaft 18. The arm 46 has two locking slots 54 and 55 which are engaged by a pin56 rigidly mounted in the arm 53 when the latter is raised. A lever 57 is also rotatably mounted on the shaft 18 and is connected to the arm 53 by aspring 58. The left end of this lever (Fig. 1) ter- .minates in a cam surface 59 which is adapted to engage a cam surface 60 rigid on the actuator framing 63 subsequently to the insertlon by the master wheel of the last digit of a number.

It will be remembered that when a number is inserted in the totalizer the highest digit-is entered first and the totalizer travels step by step to the left, the master wheel coperating with successive carrying gears as the number is inserted digit by digit until the last digit is inserted and then the totalizer may continue its travel to the left for some little distance. After the insertion of every number the cam 60 raises the lever 57 by means of the cam 59 during such extra travel and this motion of the lever 57 will insert a digit in the totalizer if the number which has just been inserted has caused the totalizer to pass through zero. The reason of this is that when the lever 57 is raised the spring 58 raises the lever 53 to aposition where the pin 52 is collinear with the shaft 14, thus contacting the cam surfaces 49 and 50 with the pins 38 and 39. It will be remembered that whenever the totalizer passes through zero the pivot 47 will change from the position shown in 90 Fig. 7 to that shown in Fig. 8 or vice versa. Now, assuming the pivot 47 is in the position shown in Fig. 7, the pins 38 and 39 in the position shown in full lines in the same figure and-the cam 48 is raised by the pin 95 52 until 52 is concentric with the shaft 14, it is obvious that the pins 38 and 39 will move into their dotted positions and the segmental gear 37 in which said pins are. mounted will be turned in the direction of the arrow. If the pivot 47 is in the position shown in Fig. 8 and the pins 38 and 39 are in theirfull line position and the cam 48 be raised the pins 38 and 39 will be thrown in -their dotted position and the seg-mental gear 37 to lwhich tley are attached, will be rotated in the reverse direction. Now, the position of the pivot 47 shown in Fig. 8 is the position correspond- Y ing to the exhibition of thepositive total, `1'10 and since the arm 46, on which the pivot 47 is mounted, is geared to the shutters and therefore moved coincidently, the position of the 'pivot 47 shown in Fig. 8 will cor- `respond to the exhibition of a positive total,

and the position of the pivot 47 shown in Fig. 7 will correspond to the exhibition of a negative total. The parts are so proportioned that when the raising of the cam 48 rotates the pins 38 and 39 either in the di- 12o rection as shown in Fig. 7 or the direction as shown in Fig. 8 the amount of this rotation will correspond to the insertion of one unit. The direction of insertion of this unit depends upon the position of the pivot 1'26 47which in turn depends upon the position of the shutters. Whether. the unit is inserted at all depends on whether the pivot 47 has been changed since the last time the lever has been raised or since the last num- "v lever 57 is, of course, raised by means of the cam 59 every time a number is inserted in the totalizer but this raising will not 'affect the segmental gear 37 unless the position of the pivot 47 has been changed between times or unless the number just inserted has caused the totalizer to pass through zero.

' A pin 64 rigid in the lever 53 connects this lever to the dog 41, thereby raising the dog out of engagement with the teeth of the segmental gear 37 each time the lever 57 is raised. The spring 58 connecting the lever 53 with the lever 57 is provided to Vallow some extra motion to the cam 59 beyond that required to bring the lever 53 into the proper position, thus compensating for any variation of distance between the totalizer and the actuator.

It will be seen that I have provided a simple mechanism for giving an algebraic total. While it istrue that the totalizer may pass through zero during the insertion of a number and temporarily exhibit a total which is wrongby one, this objection is not material since as soon as the end of the number being inserted has been reached the exhibited total will be corrected by the eXtra travel of the totalizer.

Attention is called to the action of the pin 56 on the locking slots 54 and 55. Besides locking the gear chain against motion while the extra unit is. inserted, this action removes whatever spiral may be in the chain before the unit is inserted. -Inspection of Figs. l, 2 and 9 will show that the parts'arei so proportioned that on the lever 57 being raised by cam 59 contacting' with the cam surface 60 on the framework, the pin 56 will have enteredthe inclined portion of either the slot 54 or the slot 55 before the cam 48 engages the pins 38 and 39. The parts are dead portion of the slot 54 or 55.

the actuation, as for example the Wahl that when thefirst gear of a chain of five'to so j totalizer shown in this present application, 1t is .impossible to make the action of' the carrylnggearson .the carryable gears such ten gears is moved, the last gear will move the same amountas the first,owing to the necessary lost motion in the chain. In any algebraic totalizer in which the carrying is simultaneous with the actuation this spiral effect interferences with the subsequent insertion of a unit in the last place, for whether or not a unit is inserted is determined by the position of the highest gear in the chain and if this highest gear lis not in its proper position, the totalizer will not act properly. In

the device shown in the present application I remove all thespiral by the action of the pin 56 on the locking slots 54. and 55 before inserting vthe extra units, and I wish to claim the same broadly.

l/Vhile I have shown my invention employing two .sets of number wheels it is obvious that thisis not at all necessary since one set of number wheels could be provided having vtwo oppositely running sets of figures paired 0 9, and a single shutter could be vused to shift from one set of figures to the other. The' particular. reason why two sets of number wheels were used in this present construction instead of one was from considerations of space only, since in the Wahl machine the distance of one carrying gear 13 to the next is one-tenth of an inch, thereby conforming to the ordinary typewriter pitch, a'nd there would not be space enough to employ a number wheel with two sets of figures on it without making those figures undesirably small.- Moreover, I consider such a construction an obvious equivalent of my invention.

I believe I am the first to show a ten key ladding and subtracting machine equipped with an algebraic totalizer, which totalizer is automatically corrected subsequently to the insertion of the lastdigit of a number of greater absolute value than and opposite sign to the previously exhibited total, and I wish to claim the same broadly.

When I speak of a 10 key adding machine I mean a machine having a decimal carriage on which the digits are set up sem'atz'm, as distinguished from an 81 key machine having no decimal `carriage and in. which the numbers are first set up by the keys and then entered in all the decimal .places of the totalizer simultaneously. Y. Obviously', a 1 0 key adding machine may :either have the numbers entered simultaneously with the action of the key, as in the Wahl machine, or may -have the action of the key simply set up the number on. the decimal carriage and afterward transfer the set up number into the totalizer, as is done in the Dalton machine. Another distinction between 1() key and 81 key machines is that in the 1 key machine any key may operate in any decimal place of the totalizer, whereas in the 81 key machine any key may operate in but vone decimal place of the totalizer. According tothese definitions a machine which hasmore than 10 keys, such, for instance, as the ma'-,v

chine of (Jroldberg as disclosed in Patent Number 893,720, July 21, 1908, which shows y.

11 keys', would reallybe in theclass of 10 place of the totalizer. In the claims Which follow, when I speak of anadding machine having 10 keys I intend to cover a machine which is in the 'general class of 10 key adding machines, as defined above, even though such a machine may have a greater or lesser number o f keys than 10, the essential feature being that any of the keys may be used in any decimal place of the totalizer.

Many other changes in the precise construction herein disclosed may be made by those skilled in the art Without departing from the spirit of my invention, since I claim:

l. In a calculating machine, the combination of a master Wheel, a set of numeral keys, each adapted to operate a master Wheel an amount corresponding to the value of said key, a reversible totalizer adapted to have numbers inserted therein by said master Wheel, the arrangement of the keys, totalizer and master Wheel being such that any of the said keys may determine the number entered by said master wheel in any of the decimal places of said totalizer, and means to auto-v matically insert a unit in said totalizer subsequent to the insertion of a number therein by said keys. I

2. In a4 calculating machine the combination of a totalizer, totalizer actuating mechanism,a set of numeral keysoper'ative onl said totalizer actuating mechanism thereby to enter numbers in said totalizer, the `arrangement of totalizertotalizer* actuating mechanism and keys being such that anyof said keys may determine the number lto be entered by said actuating mechanism 'intoany of the decimal places of said totalizer, and means adapted to insert automatically a unit in said totalizer subsequent to the insertion of a number by said totalizer actuating mechanism Whenever said insertion causes i said totalizer to pass through zero.

3. In a calculating machine, the combination of a master Wheel, a set of numeral keys, each adapted to operate a master wheel an amountV corresponding to the value of said key, a totalizer adapted to have numplaces of said totalizer, means to automatically insert a unit 'in said `totalizer subsequent to the insertion of a number therein by said keys, and means un'der control of the highest Wheel of said totalizer to determine when said unit inserting means'shall be operated. v

4. In a 'calculating machine the combination of a totalizer actuating mechanism, a totalizer adapted to have numbers inserted therein by said totalizer actuating mechanism, a set of numeral keys, each adapted tion or in suibtraction and means to auto-4 matically insert a unit into -said totalizer subsequent to the insertion of a number therein by said ltotalizer 'actuating mechanism.

5. In a calculating machine the combination of a totalizer, totalizer actuating mechanism, aV set of numeral keys each adapted to operate said totalizer actuating mechanism an amount corresponding to the value of said key, the arrangement of totalizer,- totalizer actuating mechanism and keys being such that any of said-keys may determne'that the number represented by said key shallbe entered by the totalizer actuating mechanism into any' of the decimal places of said totalizer, means to cause a relative motion between said totalizer and said totalizeractuating mechanism and means to insert, automatically a unit in said totalizer subsequent to the insertion of a number by said v totalizer actuating' mechanism said unit being inserted only when said inserted num-- ber causes said totalizer to pass through zero. A

6. In a recording calculating machine the combination of, a traveling carriage, a master Wheel, anescapement for said carriage, a set of ten numeral keys each adapted to operate said master Wheel anv amount correspending to the value of said keyrand su'b-l sequently actuate said escapement, a. totalizer mounted on said carriage and operated by said master Wheel, and means brought into operation by the travel of said carriage adapted to insert automatically a unit in said totalizer subsequently to the insertionof a number by said master wheel when ever said totalizer passes through zero.

7. In ya calculating machine, the combination of a totalizer, a Nset of numeral-keys adapted to insert numbers therein, a decimal carriage movable step by step from one decimal position to another, and means whereby anadditional step of said carriage beyond the lastv decimal position of the t0- talizer mayinsert a number in said totalizer.

8. In a calculating machine, the combination of a totalizer, a set of numeral keys adapted to insert numbers therein' in one direction for` addition and in the reverse direction for subtraction, a decimal carriage movablestep by step from one decimal po- A sition to another, and means whereby an additional step of said carriage beyond the last decimal position of the totalizer may inserta number in said totalizer in the same direction as that in which the last preced- 6 ing number was inserted.

9. In a totalizer a movable pivot and means adapted to actuaterthe Wheels of said totalizer mounted on said pivot.

10. In a. totalizer a movable pivot Whose 10 position is determined by the highest Wheel of the said totalizer and means adapted to actuate the Wheels of said totalizer mounted on said pivot.

1l. In a totalizer a movable pivot Whose position is determined by the highest Wheel of said totalizer and means adapted to actuate the Wheels of said totalizer in either direction mounted .on saidpivot.

12. In a calculating machine, the combination of a totalizer containing a set of Wheels, a movable pivot operatively connected With said totalizer and adapted to occupy either of tWo .positions corresponding to tWol positions of one of the Wheels of the totalizer,a bar mounted on said pivot,

` set of Wheels, a movable pivot Whose position 1s governed by one of said totalizer "Wheels, a bar mounted on said pivot, a second totalizer Wheel, a 1Apair ofpins projecting vfrom said second Wheel into the plane of said bar, and ymeans to bring said bar in contact with one or the other of said pins,

according to the position'of said movable pivot. l

14:1.' In a totalizer va movable pivot Whose posltion is determined-by the highest Wheel in the totalizer and means adapted to adda unit in said totalizer mounted on said pivot.

15. In a totalizer^ a movableepivot vWhose position is determined by the highest Wheel in the totalizer and means adapted to add a unitv in said totalizer ,in either direction mounted on said pivot. i

16. In a calculating .machine the combination of a totalizer, a master Wheel, a deci.-

mal carriage, means to cause a relative mo- Jtion of said totalizer and master Wheel, a

set of keys adapted to actuate said master Wheel and determine a step by step motion of said decimal carriage, the arrangement of keys, master Wheel and, totalizer being such that any of said keys may determine that the number represented by said key 4may 'be entered ,in any decimal place of said .totalizer and. means toinsert va unit in said totalizer independent of the opera- A tion of said keys.

motion of said decimal carriage, and meansv controlled by-the motion of said vdecimal carriage to add a unit in said totalizer independent of the operation of said keys.

18. In a calculating machine, the combination of a totalizer, a set of numeral keys' adapted to insert numbers therein, a decimal carriage movable step by step from one denominational position to another, and means including a cam and follower mechanism brought into coperation by an additional step of the carriage beyond the last decimal position of the totalizer to insert a number in said totalizer.

19. In a calculating machine, the combination of a decimal carriage, a totalizer, a cam on said decimal carriage, and means brought into operation by said cam to add a unit in said totalizer.

20. In a totalizer, the combination of a lever mounted on a movable center, a totalizer Wheel having teeth thereon, and means including said lever to actuate said totalizer Wheels independent of said teeth in a direction determined by the position of said movable center.

21. In a totalizer thev combination of a lever mounted on a movable center, means to change the position of said movable centalizer through zero, and means to actuate the Wheels of said totalizer in a direction determined by the position of said movable center.

22. In a calculating machine the combination of a decimal carriage, a totalizer, a lever mountedl on a movable center, means to change the position of said center coincident with the passage of said totalizer ter coincident with the passage of said tothrough zero and means operated by the l decimal carriage tooperate said lever and thereby insert a unit in said totalizer in a direction 'determined by the position of said movable center.

23. In a lcalculating machine the combination of a decimal carriage, a totalizer embodying a set of carrying Wheels rotatable about a center, a movable pivot whose po- .sition is determined by the highest Wheel of said totalizer, a lever mounted on said movable pivot' and adapted to advance said totalizer wheels one step in either direction,l

a second lever, a pin and slot connection between said rst lever and lsaid second lever,

Iand means operated by the motion of the decimal carriage to bring said pin and slot connection in line with the center of said v totalizer Wheels.

24. In a calculating machine, the combination of a totalizer, said totalizer including a set of carrying gears and a set of carryable gears, means for the insertion of a unit in said totalizer as an incident of the passing of the highestv carrying gear through 0, and means to remove the spiral consequent upon the passing of saidhighest l carrying gear through 0 before the insertion of said unit. 1

25. In a calculating machine, the combination. of totalizer actuating mechanism, a set of numeral keys, each adapted to operate said totalizer actuating mechanism an amount corresponding to the value of said -key, ya totalizer adapted to .have numbers inserted therein by said totalizer actuating mechanism,` the arrangement of the. keys,

totalizer'and totalizer actuating mechanism being -such that anv of the said keys may determine the number entered by said t0- talizer actuating mechanism lin any of the decimal places of said totalizer, means to automatically insert a unitin said totalizerv.

subsequent to the insertion of a number therein by said keys, and means under control of the highest wheel of said totali'zer to determine when said unit inserting means shall be operated.

26.. In a totallzer the combination of 'a totalizer Wheel having teeth, 'an'.actuating means adapted to-turn said wheel by means .Y of said teeth, a lever mounted on a movable Icenter and means to actuate 'said totalizer. 85fwheel upon the operation of-said lever and in the direction determined bythe said mov.-

27. In a calculating machine, the combination of a ttalizer, totalizer :actuating 40 Amechanism, a set of numeral keys Operative on said totalizer actuating'-mecha'nism to `enter numbers thereby in said totalizerfthe arrangementof totaliz'er, actuating mecha- `nism and keys being such nthat any of saidA keys' may determine the number to be en tered by said actuating 'mechanism into any i .ferring from one of said Wheels to another,

an actuator for .said totalizer, a decimal car-- riage movable step by step to bring oneof 60 Y said lwheels after another into coperation With 'said actuator, a` toothed device con nected with the Wheelof highest order, and a device moved radially-TintoI engagement with said toothed device by an additional 65 step of said carriage beyond the last decimal vposition of the totalize to bring said toothed device and said highest wheel toV correct position.

, 29. In a calculating machine, the combi 7 0 nation of lan algebraic totaliz'er' comprising a series of Wheels, an actuator, a Vdecimal carriage for bringing said totalizer Wheels one after another into'coperation with said actuator, means for carrying the tens from one 'of said wheels to another, adevicemov-z able Vto one position when the. totalizer passes through zero in a positive direction land to a second position whensaid totalizer passes throughzeroin a negatlve direction,

and a delayed action device acting rst. to true up said two-position device and then to insert the necessary number in the totalizer.

In WitnessV whereof I have hereunto 85 signed 'my name, this 16th 'day of July, 1913.

ARTHUR F. POOLE.

Witnesses:

D.l W. GALL, E. P. BITZER'.

Images