US1282058A

US1282058A - Adding-machine.

Info

Publication number: US1282058A
Application number: US17086317A
Authority: US
Inventors: Birney Dysart
Original assignee: Individual
Current assignee: Individual
Priority date: 1917-05-25
Filing date: 1917-05-25
Publication date: 1918-10-22
Anticipated expiration: 1935-10-22

Description

B. DYSART.

ADDING MACHINE.

APPucATloN man MAY 2s. 1917.

Patented 0st. 22, 1918.

3 SHEETS-SHEET l.

B. DYSART.

ADDING MACHINE.

APPLICATlON FILED MAY25.1917. 1,282,958.

Patented Oct. 22, 1918.

' 3 SHEETS-SHEET 2.

B. DYSART.

ADDING MACHINE.

,APPLICATION FILED Mln/25,1917.

Patented Oct. 22, 1918.

3 SHEETS-SHEET 3.

BInNnY DYSART, or CINCINNATI, omo.

ADDING-MACHINE.

Specification of Letterslatent.

Patented Oct. 22, 1918.

Application led May 25, 1917. Serial No. 170,863.

To all whom t ma concern:

Be it known tat I, BIRNEY DYsART, a citizen .of the United States, residing at the city of Cincinnati, county of Hamilton, and State of 0hio, have invented .a new and useful Adding-Machine, of which the following is a specification.

'This invention relates t0 adding machines.

An .object .of the invention is to provide anadding machine having -a series of adding pinions for wheels operable to receive and add the amounts by cooperation with the actuating racks, one of the racks being arranged to coperate simultaneously with a plurality kof orders inthe dierentiail mechanism .and at one .operation introduce into a single one .of .the adding -pinions a number composed of a plurality vof digits set up or registered indifferent numerical orders in the .differential mechanism.

Another object ofthe invention is to provide an adding machine having a differential mechanism in vwhichthe digits of the numbers may be set up in dierent numerical orders :according to lthe decimal system of notation, in which ten units of one order make .one unitof the .next higher order; and to provide such machine with equipment by which the numbers may be added and the .sum .thereof v.exhibited or recorded according gto-.a dierent system of notation as, for instance, -the .duodecimal system in which twelve units Vof one vvorder make one unit .of the 'next higher lorder.

Y,A further object ,of .the invention is to provide an ladding machine including dierential mechanism capable of having set up therein a vcompound `number in which there is a varying relative value ,between vditl'erent columns :or numerical orders, and in which machine a plurality of such compound numbers may be 4successively set up and added and thesum thereof exhibited according to such compound systemof notation regardless of the fact ,that 4the number of units in `some orders, kaccording -to such compound system of notation required to make one unit of the next higher order, may be greater than ten and not an even vmultiple thereof.

vAn Aadditional object is to provide an adding machine :of the character mentioned in which each digit when introduced or set up in the machine is represented -by a stop in units numerical order and is automatically advanced progressively to the next higher order as incident :fo lthe introduction or setting up of each succeeding digit, the last digit introduced or set up remaining in units order and in which the highest digital value which can be introduced or registered in any given order is nine, and further in which the various numbers so introduced or set by successive operations may be added and the sum thereof exhibited according to a system of notation in which the number of units required to ma-ke yone unit of the next higher order` is more than ten.

Among the specific objects of the invention may be mentioned the adaptation and equipment of the well known Dalton adding machine which is manufactured in substantial conformity with thc adding mechanism shown in Hubert Hopkins Patent No. 1,039,130, dated September 2i, 1912, with cooperating mechanism embodied in and constituting a part of the machine operable to handle amounts expressed in denominations oi' English currency such as pounds, shil lings and pence; also common fractions such as twelfths, sixteenths, etc.; feet and inches; hours and minutes; degrees and minutes; bushels and pounds; and various other mathematical computations.

The drawings illustrate one form of the invention embodied in a Dalton adding machine. In the specific embodiment illustrated the machine is adapted for handling of English ycurrency including pounds, shillings and pence. According to the English system of currency twelve pence make'one shilling, and twenty shillings make one pound. While in this yarticular embodiment of the invention illustrated only the recording mechanism of the two lower numerical orders are modified. It is obvious that the same or other modifications necessary to perform other or similar examples of computation could be extended to any other orders in the machine, in which case the machine would be provided with differential mechanism in which the numbers would be set up according to the decimal system yof notation and the sums when added would be recorded .or made to appear ac- @Ording to the duodecimal system of notation. A single character would in that case be employed for l0 and also another character for 1l, just as for the digits l to 9.

In the drawings, in which I have illustrated the present invention,

Figure l is a side elevation of the operating mechanism, the case of the machine and certain of the'Y shafts and other parts thereof being in section.

Fig. 2 is a view illustrating the type-carrier and some of its associated partsl which cooperate with stops in one or two numerical ordersin the differential mechanism as required to record and add one or more digit at a single operation.l g

Fig. 3 is a rear elevation of the recording type-carriers and the associated racks which coperate with the adding wheels or pinions.

Fig. 4 illustrates in detached relation two coperating members which coperate with the type-carrier that is operable to record one o-r more digits at` a single operation.

Fig. 5 is a sectional view on a line 5-5 of Fig. 1.l

Fig. 6 is a detail view illustrating in rear elevation Ythe controlling members which cooperate with the stops in two numerical orders in the differential mechanism to enable the digits set up in said two orders to vbe recorded by operation of a single typecarrier. Some of the parts have been omitted for the sake of clearness.

. Fig. 7 is an inverted view illustrating the two pinions and racks constituting a part of the mechanism Shown in Fig. 6.

Fig. 8 is a detail view showing some of the controlling mechanism that was omitted from Fig. 6.

Fig. 9 is an enlarged view of the adding l pinion or wheel in the tens of shillings order by which carryingor transferring to the neXt higher order, that is to the units of pounds order, is caused every time the tens of shillings wheel moves two spaces or teeth.

As previously stated, my present invention is shown embodied in an adding machine which includes many of the elements and mechanisms disclosed in Hopkins Patent'No. 1,039,130. The adding machine of ythat patent is well known commercially as the Dalton adding machine. The Dalton adding machine which is manufactured under the `Hopkins patent mentioned includes a series of ten numeral keys 1 conveniently arranged in a key board and mounted upon levers 2 which are pivoted upon a support 3. The levers 2 converge at their rear or inner extremities and all but that for the figure 9 are provided with hammers or eX- tended portions 4 formed in a row at'right angles to the rows of keys in the key board. The hammers or extensions 4 are arranged toact upon differential stop pins V5 supported by a transversely movable frame or carriage 6 having rollers 7 operating upon transverse rails 8. The digits of the numbers are set in the differential mechanism by operation of the keys and as an incident thereto the carriage and the stops therein are moved laterally from order to order to positionthe stops -to limit movement ofthe type-'carriers and.' their' lassociated riers and racks are pivotally suspendedfrom ,ashaft 9. Each of the type-carriers vv,1s cooperatively related to a hammer 10 normally held by releasable latches 11 from which they are independently releasable as an incident tooperation of `corresponding type'-,

carriers to recording position.y .'IheV typecarriers-and racks are normally held in 4retracted positions by a transverse; rod 12 supported cross wise in front ofthe depending portions lof the type-carriers and racks by arms 13 carried by the shaft 9.

f After any number has been set in the differential mechanism the arms 13 are swung forwardly to carry the rod 12 out of contact. with the type-carriers and racks, whichv are thereupon actuated by springs 14 untilv stopped by engagement with the differential.

stops 5 in the usual manner. i

The adding mechanism of the Dalton adding machine and the machine of the Hopkins patent mentioned, comprises a series of adding pinions or Wheelsil (Fig.-5)1,in dependently revolubly mounted upon a shaft supported by a swingingv frame 16.' The Y adding pinions or wheels are'movable by oscillation of the frame 16 into and out of mesh with the racks 17 cooperatively associated with the type-carriers so that, as anf incident to the operation of said type-carriers to record the numbers set up in the diiferential mechanism, the adding pinions or wheels will be operated to add the numbers. In the usual decimal system of nota-l tion the racks and pinions areautomatically operable to carry or transfer from lower to higher numerical orders in the series when the total value of the digits introduced intov any of the wheels or pinions by successive operations thereof amounts to ten foreach numerical order. Thus, when the pinion or wheel in unitsorder has been set to indicate nine for instance, and another digit is added `thereto, the units pinion or wheel-is operated to or beyond the decimal position and as an incident thereto the rack in tens order' the above described mechanisms of the Dal-- ton adding machine thatI have chosen to illustrate the preferred embodiment of my present invention. In the present instance I have illustrated my invention adapted for Y' the addition of English 'currency-with'the provision that thereshall 'be'.a -single nu-j merical order of the recording mechanism fon recording pence; that the next two higher -numerical orders of the recording mechanism shall beoperative for recording shillings, and theremaining higher numerical-,orders of the recording mechanism shall loe-operative for recording pounds; and with the further lprovision for automatically effecting they transferring or translation of pence toshillings, and shillings to pounds, in` accordance with the English currency system. vThus, when the total of pence added in the machine equals or exceeds twelve pence transferring is automatically eft'ectedvinto the units order of shillings, since, according to the English currency system,.-twelve pence. make one Shilling. So, also, whenthe total of shillings added in the machine equals or exceeds twenty shillings transferring is automatically eected into the units order of pounds, since, according to the English currency system, twenty shillings make one pound. It will be understood, of course, that the system of transferring from lower to higher orders may readily be varied for the addition and translation into their higher equivalents of inches tojfeet, minutes to hours, minutes to degrees,.pounds to bushels, and other examples-of that generalclass without materially or 'in principle varying or departing from theembodiment: of my invention illustrated.

.Aspreviously stated, I prefer to employ a single type-carrier for recording the number of pence. In the form shown the typel carrier v18 is of the ysame general shape and configuration yas the type-carriers of the usual Dalton adding machine, except that said carrier supports a rack 19 adapted to coperate with a specially constructed pinion 20 independently revoluble upon the same shaft Awith the pinions 15. The pinion k-2O.in .the machine for addition of Englishcurrency-.is the pinion for the addition of pence and is therefore. formed with twelve ;teeth, so,..tha"t at each complete revolution off said pinion 2O carrying or transferring will be leffected into the units of shillings ordenin the same way that carrying or transferring is attained in the adding machines previously mentioned. The type-carrier 18 is further formed with a rack 21 which is in constant mesh with a small pinion 22 revolubly mounted upon a supportingstud 28in rigid connection with a larger pinion 2/1. The two pinions 22 :and 24 constitute a part of the controlling mechanism whereby the single type-carrier 18 is contiplled' by the diiferential mechanism to record the pence items.- Thus, on some occasions it is necessary to record an item of 1, 2,- 3; or pence, for instance, and on other occasionsl it isnecessary'to record items of 10 or .11 pence, for instance. In the latter case the single type-carrier 18 must necessarily 'operate to .;record the two digits-indieating the number of pence, and said two digits are indicated by stops 5 in two different numerical orders in the differential mechanism. This necessitates the provision of devices for cooperating with the stops in the two diiferent numerical orders in the differential mechanism at the Sametime in order that the type-carrier 18 may be operated to record 10 or 11 pence as may be required. F or the recording of the pence the type-carrier 18 is equipped with twelve movable type arranged in sequential order from a type for printing Zero at the top to a type for printing eleven at the lower end of the series. In the Dalton adding machine and the machine of the Hubert Hopkins patent hereinbefore referred to the type-carrying sectors stand with the 0 typev slightly below printing position. The type-carrier 18 is so arranged that its 0 type stands in printing position when the type-carrier 18 is in its idle position. The rack 19 associated with the type-carrier 18 is never required to operate in the carrying or transfer of the tens, as there is no lower order from which carrying could be necessary. No necessity therefore exists for the extra movement away from printing position usually found in the Dalton machine. This extra movement is provided for in the present instance in the case of all the remaining type-carriers.

I will now describe the mechanism under control of the differential mechanism for governing and controlling the type-carrier 18 in its recording and adding operations to record and introduce into the adding pinion 20 at a single operation any digit or number from one to eleven inclusive. While each of the type-carriers otherv than the type-carrier 18 has a projecting part 26 (Fig. 8) for engagement with the differential stops to limit movement of the typecarriers and racks, it will be observed by reference to Fig. 2, that the type-carrier 18 1710 does not have any projection corresponding to the projection 26; and as a result of this construction, the type-carrier 18 must be controlled and limited in its movements otherwise than by such a projection. A rack 115 member 27 is suspended from the shaft 9 in a position corresponding to the next lower numerical order from the type-carrier 18, and is in constant mesh with the pinion 24.

As previously stated, the pinion 24 is in 120 rigid connection with the pinion 22 so that both of said pinions revolve together; and the pinion 22 is in permanent mesh with the rack 19 constituting an integral part of the type-carrier 18. In the particular embodi- 15215 ment of my invention illustrated, which is for the addition of English currency, the pitch line of the pinion 22 is tothe pitch line of the pinion 24 approximately asten isto twelve; or, expressed in another ina-nner, the pinion 22 may contain ten teeth while the Vpinion 24 has twelve teeth. These two pinions being rigidly united and revolubly mounted upon the stud or shaft 23, it is obviousthat when ythe rack 27 moves, the rackV 19 and the Ytype-carrier 18 will also move inthe same direction, but at a less rate ofspeed or ratio of movement, beingY rearward extension 31, and a retractile spring 34 (Figs. 1 and 2) connects the said arm 31 with a stationary part 35V and is thereby effective to actuate both the rack 27 and the part 30 forwardly when the projection 28 reaches the forward end of the slot 29. As previouslystated, the entrained connection of the rack 27 with the typecarrier 18, through the

pinions

24 and 22 and the rack 21 results in moving the typecarrier 18 relative to the rack 27 in the proportion of ten spaces or teeth for each twelve spaces or teeth through which the rack 27 moves. A pawl 36 is pivoted to the part 30 at 37 and has a hook on its forward vend normally engaging in front of the projection 28 thereby latching the rack 27 with the part 30. A spring 38 connecting the pawl 36 with the part 30 yieldingly retains the pawl in latching position and prevents independent movement of the rack 27 relative to the part 30, except when 10 pence orA 11 pence are set up in the differential mechanism and the machine is operated to record such item and to introduce it into the adding pinion 20. XVhen the pawl 86 is disengaged from the projection 28, movement of the pawl bythe spring 38 is limited by an abutment 39 so that when the projection 28 is pressed against the oblique forward end of the pawl 36, the latter will be pressed downwardly to permit the pawl to .pass to the rear end of the slot 29 and again be engaged by the pawl. The part 30 is provided with a project-ion 40 adapted to engage with one of the differential parts 5 in units numerical order and thus limit movement of the part 80. Since movement of the rack 27 and the part 30 is permitted when any one of the differential stops is set to represent units of pence, it will be understood that said parts are movable to'di'erent positions corresponding to any of the digits representing units of pence from 1 to 9 inclusive,

and that the type-carrier 18 and rack 19 move cordinately therewith at less rate of speed and to less extent in order to carry out the proper ratio of differential moveofthe two stops in units Vand 'tens'numerical orders, so that at one operation of the type-V carrier the item of 10'pence or 11 pence. will be recorded andintroduced into the adding pinion 20. This' necessitates the provision of means for cooperating with thetwo stops representing pence in units and tens numerical orders, so that the type-carrier will be properly controlled to record that item and to introduce it into the adding pinion. I will -now describe the means for attaining that control. i

An arm 41 is pivoted upon the shaft 9 between the type-carrier 18 and the. rack 27 and is provided on its lower end with a forward projection 42 in vertical `alinement with the rack 19 and spaced in .theneXt higher numerical order from the projection 40. That is to say, the projections 26. on the usual type-carriers and the projections 4() and 42 are equi-distantly spaced in conformity withthe rows Vof dierential stops 5 in Vthe carriage 6, so that when the stops are setl in units, tens, hundreds and'thousands numerical orders, for instance, inthe differential Vmechanism, the projection 40 will engage the stop in units numerical order, the projection 42 will engage the stopY in tens numerical order and the neXt adj'a? centprojections 26 will engage the stops in hundreds and thousands numerical orders, respectively. The arm 4l also has a rearward projection43 having a pin 44'engaging in a slot 45 in a bell crank lever 46 piv= otally mounted upon a shaft 47 supported by the frame of the machine rearwardly from the type-carriers and racks. A retractile spring 48 connects the forward arm of the bell crank lever 46 with a rod 49 supportedby the arm 41 and normally abutting against the arms 13 and thereby holding the projection 42 rearwardly out of the path ofmovement of any of the differential stops while they are being moved transversely of.

spring 48, and thus disengage or unhook the y eo paw-l 36 vfrom V'the projection l28, and vthus enable the spring 34 to actuate the rack 27 `Yforwardly the full length of the slot 29, or Y until the projection 28 contacts with theforward wall of said slot.

driven to print "by the hammer 10 coperativelyrelated tothe type-carrier 18.

Through the usual controlling mechanism of the Dalton adding machine, 'as disclosed yin 'the Hopkins ipatent and other patents,

adding pinions or wheels are disengaged from the-racks during forward movement of the ltype-carriers and are automatically engaged with the racks throughout their return movement, so that the numbers recorded will be .introduced intothe adding mechanism. Therefore, when the type-carrier 18 is operated in the manner described to record the item of 10 pence, the addingpinion 20 vwill be operated on the return or rearwardmovement of the-type-carrier 18 and its connected Crack '19, and thereby set to represent the itemy of 10 pence or add the same to anyother item of pence previously introduced into the adding pinion 20.

If it be required-to record or add the item of vllapence, in addition to setting the 1 stop in tens of pence order,fthere would be another Il Stop set in the units of pence order and, when the controlling mechanism of the machine is operated, the part 30 will be moved forwardly to engage the projection .-10 with the 1 stop in units order. Obviously, this will enable the rack 27 to move a corresponding 'additional distance forwardly, thereby also actuating the typecarrier 18v and Aits connected rack 19 an equivalent proportionate distance in order to presentthe 117 type on said-type-carrier at the recording' line. On the return movement of the type-carrier the adding pinion 20 will be' turned or set to represent 11 pence, or said item .will be added to any other item of pence represented lin said pinion, and transferring to the next higher order, which is the units orderof shillings, is effected in the usual manner. As is well known transferring from -a lower to a higher order in a machine of the Dalton type is effected by movement of the rack in the higher order to which the transfer is made. Such movement occurs when the latch for the rack in the higher order is trippedby the adding pinion inthe order from which the transfer is made. In therpresent instance the pinion 20` controls the latch for the units of shillings pinion'just as in the usual Dalton machine so thatat each complete revolution of the pinion 20 transfer is made to the units Off shillings pinion. When 9 pence or less are to be recorded and added the 0 stop `is set in the tens of pence order and this stop prevents movement of -the arm 41 as a consequence of which the pawl 36 is not released from the projection 28. It is therefore seen that values not exceeding 9 pence are introduced into the adding pinion by the forward movement of the rack 27 while it remains latched with the part 30, said rack 27 actuating with it the type-carrier 18 and the rack 19.

Since, according to the British system of currency, twenty shillings make one pound, it is-necessary to carry or transfer from the tens of shillings order to the units ofpounds order whenever the total of shillings equals or exceeds twenty. This necessitates carrying or transferring from tens of shillings to units of pounds order by each alternate tooth on the adding pinion in the tens of shillings order. For this purpose the tens of shillings pinion illustrated in detail in Fig. 9 is provided with a tripping or carrying lug '5l on each alternate'tooth which operate to effect carrying or transferring to the neXt higher order that is, to the units of pounds order, in precisely the same manner that the usual carrying lugs operate to effect carrying or transferring in the orders heretofore mentioned.

In amounts like 153 6s 9d if a 07 is not desired before the 6 in shillings and the 9 in pence provision may be made in a well understood way for properly splitting the machine to interrupt the automatic printing of ciphers .at these'two places.

I claim:

1. An adding machine, comprising differential mechanism, adding pinions, racks for operating the adding pinions to add the items set up in the differential mechanism, and means for limiting movement of the racks by the dierential mechanism, one of said racks being arranged to coperate simultaneously with a plurality of orders in the differential mechanism and to operate one of said adding pinions to position to represent a number composed of a plurality of digits set up in a plurality of orders in the differential mechanism.

2. Anadding machine, comprising differential mechanism corresponding to a plurality of numerical orders, adding pinions for adding items set up in the differential mechanism, racks controlled by the differential mechanism for operating the adding pinions in adding operations, an additional adding pinion settable in positions to represent one or more digits in the process of addition as required by the nature of the work being performed by the machine, a rack for operating the additional adding pinion, and means for causing said last-named rack to .introduce into ksaid additional pinion at one 'accordingto the decimal system of notation in Which-ten units of one order make one unit of the neXt higher numerical. order; adding pinions for adding the numbers. set up in the diierential mechanism; racks controlled by the differential mechanism for operating the adding pinions to introduce therein the items set up in the dierential mechanism, vcertain of said racks being arranged to operate the corresponding adding pinions to add Vand to transfer from lower to higher orders according'to the decimal system of notation, and another rack being arranged to, operate the corresponding add: ing pinion to transfer thereto 4*only when 1 more than ten units are added in the pinion from which, transferring Vis effected; and

means for controlling the rack corresponding to theV last-named pinion by parts of the differential mechanism in a plurality of orders. whereby the last-named yrack will introduce into` thecorresponding adding pin ion at a single operation a number consisting of a plurality of digits set up in adjacent orders in the differential mechanism.

4.* An adding machine, comprising differential mechanism corresponding to a num.- ber of numerical orders and arranged to have the digits of numbers set up therein, adding pinions for adding numbers 'set up in the differential mechanism, an actuator for one of said. addingpinions, and means for controlling said actuator to introduce into the adding pinion operated thereby at a single operation the digits set up in a plurality of numerical orders in the differential mechanism.

5. An adding machine, comprising differential mechanism including stops settable in different numericalv orders to represent the digits of numbers, adding pinions for adding the numbers set up in the differential mechanism and racks controlled by the differential mechanism for operating the adding pinions in adding and transferring operations to add the numbers set up in the differentialmechanism, one of the racks being arranged to coperate simultaneously With stops in a plurality .of numerical orders in the differential mechanism.

6. An adding machine,-comprising differential mechanism including stops settable in differentA numerical orders to represent the l digits of numbers to be added, adding pinions for adding Athe numbers set up in the differential mechanism, 1 racks controlled by the. differential .mechanism for operating the adding pinions to add the numbers set up in the differential mechanism, one of the racks .being arrangedto coperate simultaneously Withstops in a plurality of orders inthe differential mechanismvand with one lof said adding pinions, and a type-carrier coperating `With vthat one rack for recording the digits represented in the differential mechanism with which said rack coperates.

'7. An adding machine, comprising diiferential stops settablerin dierent numerical orders to represent the digits lof numbers, adding pinions, racks controlled by the differential stops, and means for causing one of the racks to introduce into oneY of said adding pinions at one operation an item composed of a number of digits represented by stops in the different numerical orders.

8. An adding machine, comprising differential stops settable in different-numerical orders to represent the digitsV of numbers, adding pinions, racksv controlled by the diiferential stops, means for causing one of the lracks to introduce into one of said ,adding pinions at one operation' a1 i item composed of a number of digits represented by stops in the different numerical orders, and a recording device coperating. with that one rack for recording at the same operation therewith the number introduced into the adding pinion.

9. An adding machine, comprising differential mechanism arranged in a plurality of numerical orders, adding. pinions, racks controlled by the differential mechanism for actuating the addingk pinions, means whereby one of said racks will operate a single one of the adding pinions to introduce therein at one Voperation a number composed of a plurality of digits setup in the differential mechanism, a type-carrier coperating With the last named rack, type on'said type-carrier, and means coperating with said type-carrier and type to print at the same operation with said rack the plurality of digits introduced by said rack into said adding pinion. Y

10. An adding machine, comprising differential mechanism including stops settable in different numerical orders, adding pinions, racks controlled by the differential mechanism, means Vfor controlling one of said racks in each operation thereof by stops in a plurality of numerical orders and causing said rack to operate a single one of the adding pinions, and a recording device coperating with that one rack for recording the digits introduced 'by said one rack into said single one of the adding pinions.

11. An vadding machine, comprising differential mechanism including stops settable in different numerical orders to represent the digits of numbers, in combination with an actuator controlled in each operation anism controlling ,said actuator.

12. An adding machine, comprising differential mechanism including stops settable 'inl different numerical orders to `represent the d1jg1ts vof numbers, 1n combination with ansractuatorycontrolled* in each operation thereof by stops in a rplurality of numerical "orders, a single adding pinion under cont-rol of .said 'actuator and settable Vthere- 'byito -frepresent the plurality of digits represented by the rstops in the diii'erential mechanism f'controlling ysaid actuator, and a recorder tforire'cordi-ng atthe same operation the plurality of digitsaforesaid.

1'3."An vadding machine, comprising diflferential mechanism,adding pinions, a rack for voperating one of vsaid adding pinions,

means for coperating said rack and the differential mechanism to introduce into the adding pinion'operated thereby at a single operation the digits set up .ina plurality vof orders in :the ditferentialmechanism, and a recorder eopera'ting with said rack for recording u.said digits.

114. In'an adding machine, anadding pinion',l a rack foroperatingsaidadding pinion, a'type-carrier `in connection with said rack, an additional rack in connection with said typefcarrier, i*a controlling pinion meshing with said additional rackfmeans `for actuatingsaid{type-carrier and said racks to different selectedv positions, and means coperating vrWit-h said controlling ypinion to stop said typescai-rier'and said racks in their different selected positions.

AX15. InL an ,adding 'machine an adding pinion, a Yrack for voperating said adding pinion, atype-carrier in connection with said rack, an additional rack in connection with said type-'carrien-a controlling pinion meshing-with said additional rack, means-for actuating `said -ltype-carrier and said racks to different selectedepositions, stops, and means coperating:with-.said stops for stopping rotation of saidcontrolling pinion as required to stop said typec-arrier and said racks in their f different selected positions.

*16J liran adding machine, an `adding pinion, a rac-k "for operating said adding pinion, 'ian additional rack in connection with said first-named rack, :a controlling f pinion meshing with said additional rack, means for operatil'ig said racks -as required to actuate-said adding pinion in adding operations, and means for `stopping said controlling pinioniafter rotation to any desired extentjoylimitmovement 'of said racks.

1T. Infan adding machine, an adding pinionya rack lfor actuating lsaid adding pinion in adding operations, an additional rack in connection with said first-named rack, a controlling pinion-permanentlymeshing with said additional rack, a spring actuated connection for actuating said racks in one direction, mechanism coperating with said controlling pinion to stop movement of said racks in the direction aforesaid, and a device for actuating said ra cks to their starting points as required to actuate said adding pinion in adding operations.

18. In an adding machine, an adding pinion, a rack for operating said adding pinion, a controlling pinion lfor limiting movement oit said rack' in one direction, stops, Vmovable devices under control of said stops, and means whereby saidmovable devices control andvlimit rotation vof said controlling pinion.

19. In an adding machine, an adding pinion, a yrack for actuating said adding pinion, a controlling pinion for limiting movement of saidrack, an additionalpinion in connection with said controlling pinion, and means coperating-With said additional pinion to stop rotation of said controlling pinion and thereby stop movement of said rack in different selected positions.

20. In an adding machine, an adding pinion, a rack for actuating said adding pinion, a controlling kpinion for controlling said rack, an additional pinion in connection with said controlling pinion, a incl: tor limiting rotation ofl said controlling pinion, and differential mechanism controlling said last-named rack.

21. In an adding machine, an adding pinion, a rack for operating said adding pinion in adding operations, a controlling pinion for limiting movement of said rack in one direction, an additionalpinion in connection with said controlling pinion, a controlling rack meshing Vwith said additional pinion, a device for stoppingfmovement of said controlling rack, and differential vmechanism controlling said device.

2Q. In an adding machine, an adding pinion, a rack for operating said adding pinion, a controlling pinion for limiting movement ot said rack in one direction, a controlling rack for stopping rotation of said controlling pinion, a device for stopping movement of said controlling rack, a connection between said device and said controlling 'racln and differential mechanism for stopping movement of said devicoin different selected positions.

23. In an adding machine, an adding pinion, a rack for operating said adding pinion, an additional rack in connection With said first-named rack, a pinion meshing with said additional rack for stopping movement of said racks in one directiommeans toractuating said racks, devices for limiting movementof said controlling pinion, and 'difierential mechanism controlling said devices.

524.1111fana-addingfmachine, an adding pinion, a' rack for 'operating' said adding pinion', an '-additional raclr in connection withV saidlirst-named rack, a controlling pinionfor limiting movement of said additional rack, a rack governing saidcontrolling pinion, and diii'erential mechanism for stopping movement of said last-named rack.

.25... In an vadding machine, the combination with an adding pinion, 'a rack for operatingsaidadding pinion, and al controlling pinion/for controlling said rack and limiting extent of movement thereof, of differential mechanism, an additional pinion inconnection with said cont-rolling device, and means cooperating with said differential mechanism and said additional pinion to determine eXtent of movement of said controlling pinion and to stop movements oi' said controlling pinion 'and thereby said rack in different selected positions.

26. In an adding machine, an adding pinion, a rack for operating said adding pinion, a ldevice for limiting extentv of movement of said rack, a releasable latch connecting said' rack With said device, differential stops settable to stop said device and thereby said raclrin different selected positions, means for moving said raclr to the different selected positions, a releasable connection between said device and said rack whereby they are held togetherA for concurrent movement, and Vmeans for releasing said connection to enable said rack to move independently of said device.

27. Inan adding machine, an adding pinion,a rack for'operating said adding pinion, a controlling device for said rack, a member for stopping said controlling device and thereby said raclr, an element arranged to coperate with said controlling device to stop the sa1ne,a connection between said con trolling device and said element whereby they maybe moved together, and means for disconnecting said connection to enable said controlling device to move independently of said element.

28. In an adding machine, an adding pinion, a rack for operating said adding pinion, a controlling device for said rack, a mem` ber for controlling said controllingdevice, an element for stopping said member, a latch vconnection whereby said lelement and said member will be held together in operation, and means for releasing said latch connection and enabling said member to be operated independently loi said element.

29. In an adding machine, an adding pinion, a rack for operating said adding pinion in adding and yclearing operations and controlled by said adding pinion in clearing operations, a controlling device for controlling said rack inadding operations, a member for controlling said controlling vdevice in addingoperatio'ns, an element limiting movement :ofs'aid member iniadding operai-'f tions, and means vfor operating said member and said rack independently of said element in clearing operations- 1 ff- 30. In an adding machine, an addingpin# ion, a type-carrier operable-l '1 recording operations, a raclr'operatedby-said typeoarrier inv adding. and clearing i operations, a controlling device for Esaid rack: in'ja'dding operations, a i member-for :controlling said controlling device and vthereby@ saiditype` carrier and 1 said if rack in 'recording-randVv adding operations, .an element for ilimiting movement of said memberin certain adding operations, and means for operating saidE member and said type-carrier and rack-.ine.. dependentlyV of said element in operations to: clear said adding pinion and to :recordfthef total represented therein. f 2.1i

31. In anV adding machine, an 'addingpmion, a type-carrier l operable-pin recording operations, meanswhereby, said typefcarrier will operate said pinionin adding'v and in clearing operations, acontrolling 'devicefon controlling said type-.carrier in adding opere,

ations, a member for controlling said :con-,-Y trolling device in adding. operations, an eley ment coperating with s aidmember:invoer--l tain adding operations, said member 4operating independently of said element-.in certain other adding operations andinrclearing. operations, and means for limiting 1noveI ment of said elemenh--f i I 1' i 32. In an adding machine, an addingfpin# ion settable to represent a plurality of digits at a single operation, a type-carrier operable in recording operations: tol .record 'fa plurality of digits at a single operationcor'- responding to the digits represented-in said.

adding pinion, stops. arranged inl numerical orders, and mechanism vfor controlling .the operation of said type-carrier in any selected operation thereof by stops set inya .plurality of numerical orders.

33. In an adding machinegan ion, a rack for operating said adding pinion, a recording instrumentality for operatingR said rack, a controlling device for the re# cording instrumentality, a" vpinion in c on-` nection with said controlling device-for limiting movement of the same, a rackmesh-r4 ing with said pinion, an elementor limiting movement of said rack, a releasable latch connecting said element -and said rack, and

means for releasing, said latch to enablesaid rack to move independently of said element.

34. In an adding machine, an adding pine`- ion, a rack foroperating said addingpinion an additional rack in connection with-said first-named rack, a'controlling pinion meshingvvith said additional rack, an additional pinion 1n connection with saidfcontrolling incense between said element and said last-named rack, means for releasing said latch to enable said last-named rack to be operated independently of said element, and means for rengaging said latch to cause said element and said last-iiamed rack to be operated together. Y l

35. In an adding machine, a type-carrier movable to and from recording positions, differential mechanism, a movable element controlled by the differential mechanism, a rack in connection with said movable element, a pinion meshing with said rack, and a rack in connection with said type-carrier under control of said pinion, whereby extent of` movement of said type-carrier is determined by said movable element and the differential mechanism.

v36.l In an adding machine, dierential mechanism settable .to represent the digits of numbers, a type-carrier movable to recording positions corresponding to the digits set in the differential mechanism, a rack in yconnection withsaid type-carrier, a pinion meshing lwith said-rack, amovable element y.controlled by the differential mechanism,

and .a rack in-connectionwith said movable element for stoppingrotation of said pinion to stop said type-carrier in recording positions corresponding to the digits set in the dierential mechanism.

37. In an adding machine, dilerential mechanism settable to represent the digits of numbers, a type-carrier movable to recording positions corresponding to the digits l set in `the diiierential mechanism, a rack in connection with the type-carrier, a pinion meshing with said rack, a movable element controlled by the dillferential mechanism, a

controlling rack in connection with said movable element for controlling said pinion to stop said type-carrier in recording positions kcorresponding to the digits set in the differential mechanism, and means for releasing ysaid controlling rack from said element to enable said controlling rack to op- .mounted, a rack in connection with said type-carrier, a pinion meshing with .said rack, a controlling rackfor limiting rotation of said pinion, and means under control of the. diierential mechanism for limiting movement of said controlling rack.

39. In an adding machine, a type-carrier movable to and .from recording positions,- differential mechanism, an element con- ,.trolled by the differential mechanism, a convtrolling rack releasably connected to said element, .a rack in connection with said typecarrier, apinion meshing with said lastnamed rack and being under control of said controlling rack, whereby said type-carrier is stopped in positions corresponding to the digits setin the diiferential mechanism, and an adding pinion under control of said typecarrier.

i0. In an adding machine, a type-carrier movable to and from recording positions, a rack in connection with the type-carrier, a pinion meshing with the iacli, a controlling rack for controlling said pinion, diiierential mechanism, a movable element controlled by said differential mechanism, a releasable latch connecting said controlling rack and said element, and means for releasing said latch to enable said controlling rack to move independently of said element as an incident to operation of said parts after certain digits have been set in the differential mechanism.

4l. In an adding machine, a type-carrier, type supported by said type-carrier, means for cooperating with said type to record, a rack inconnection with said type-carrier, a pinion meshing with said rack, stops, a movable element controlled by said stops, a con- .latch connecting said controlling rack and said element, means holding said latch in latched position, and means for disengagiiig said latch to enable said controlling rack to move independently of said element. 4:2. In an adding machine, a type-carrier, recording type supported by said type-carrier, means for cooperating with said type to record as an incident to operation of said type-carrier, a rack in connection with said typecarrier, a pinion meshing with said rack, stops, a movable element controlled by said stops, a controlling rack for controlling said pinion, a latch holding said controlling rack and said element together or equal movement when said type-carrier is operated to record any single one of the ten digits, and means for releasing said latch to enable said controlling rack to operate independently of said element when said type-carrier is operated to record two digits at a single operation.

43. In an adding machine, a type-carrier, a type on said type-carrier for each of the ten digits, type blocks on said type-carrier each provided with two digits, a rack in connection with said type-carrier, a pinion meshing with said rack, stops, a movable element controlled by said stops, a controllin sai type-carrier in any selected position, a latch connecting said controlling rack and vsaid element whereby said controlling rack and said element are operated equal clistances under control of a single stop when the type-carrier is operated to position to record any one of the ten digits, and means for releasing said latch to enable said controlling rack to operate independently oifl rack for controlling said pinion to stop said element vwhen said type-carrier is operated to position any one of said type blocks having the two type thereon for recording.

44. In an adding machine, a type-carrier,

V'recording type supported by said type-carrier, means for cooperating with said type to record as an incident to operation of said type-carrier, a rack in connection with said a type on said type-carrier for each of the ten digits, type blocks on said type-carrier each provided with two digits, afrack in connection with said type-carrier, a pinion meshing with said rack, stops, a movable element controlled by said stops, a convtrollingrack for controlling said pinion Vto stop said type-carrier in any selected position, a latch connecting said controlling rack and-said element whereby saidcontrolling rack and said element are operated equal distances under control of a single stop when the type-carrier is operated to position' to record vany one of the ten digits, means for releasing said latch to enable said Vcontrolling rack to operate'independently of said element when said type-carrier is operated to position` any one of said'type blocks having the two type thereon for recording,

carrier.

46. In an adding machine, a type-carrier, type blocks on said type-carrier eachlprovided with two digits, a rack in connection with said type-carrier, a pinion meshing with said rack, stops, a movable element controlled'by said stops, a controlling rack for controlling said pinion to stop said typecarrier in any selected position, a latch -,con-

neet-ing said controlling rack and said element,`and means for releasing said latch to enable said controlling rack to move to position to stop said type-carrier ,in position to hold any selected one of said'type blocks in position to be driven to print.V v

47. In an adding machine, a type-carrier, type blocks on said type-carrier each'provided with two digits, a rack in connection with said type-carrier, a pinion meshing v with said rack, stops, a movable element controlled by said blocks. a controlling rack for controlling said pinion to stop said typecarrier in position to hold any selected one yrnerical orders.

01"" said type blocks inV printing position, a

latch connecting said controlling raclrand Y clearing operations, 'a rackin connection with said type-carrier, a pinion meshing with said rack, a controlling rack for said pinion, stops, a movable element controlled by said stops, and a releasable latch connecting said controlling rack and said element, whereby said controlling rack and said element will be operated together and will limit movement of said ypinion Iand said type-carrier.

` 49. In an adding machine, stops settable in units and tens numerical orders, an adding pinion, a rack for operating said adding pinion, a controlling pinion for limiting movement of said'rack in one direction, a controlling rack orcontrolling said pinion, a movable element whose movement is limited by astop'inV units numerical order, a releasable latch connecting said controlling rack and said movable element, and a device for releasing said latch when said movable element is operated after a stop other than the zero stop has been set in tens nu- 50. In an adding machine, a'typ'e-carrier, a rack in connection with said type-carrier,

"a pinion meshing with said rack, a controlling rack for said pinion, stops settable in units and tens vnumerical orders, a movable `element under control of any stop that may and an adding pinion operated by said typebe set in units numerical'order, a releasable zero stop has` been set. in tens numerical order, and means for releasing said latch as 4an incident to operation ofsaid controlling rack rand said element after a stop other than zero stop has been set in tens numerical orden a Y 51. In an adding machine, a type-carrier, type blocks on saidtype-carrier, a controlling rack, a movable element, arreleasable v"latch connecting said controlling rack and said element, digit stops settable in units and tens numerical orders, means for releasing jsaid latch as an incident to operation of said controlling rack and said movable element after certain stops have been4 set, and a device under control ofsaid rack for limiting movement of said type-carrier, whereby any Vdesired type `block may be positioned in position for recording.

52. In an adding machine, an adding pinion, a rack for operating said adding pinion, a pinion for limiting movement of said rack in one direction, an additional 5 pinion in engagement with said irst-named pinion, a controlling rack meshing With said additional pinion, a-movable element having a slot therein, a pin on said controlling rack extending through said slot, a

10 latch supported by said element engaging said pin and latching said controlling rack and said element together for uniform movement, stops settable to limit movement of said element, a device for releasing said latch, and means for controlling said releasing device Whereby said latch Will be permitted to remain in latchng engagement with said pin in certain operations and Will be released from Said pin in certain other operations.

BIRNEY DYSART.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

' Washington, D. C.