US1579544A

US1579544A - Best available corn

Info

Publication number: US1579544A
Authority: US
Publication date: 1926-04-06
Anticipated expiration: 1943-04-06

Description

BEST AVNM-B! F April-6,1926. 1,579,544v LANDSIEDEL CALCULATING MACHINE 1924 4, Sheets-Sheet 1 Original. Filed March 31 I ESTAVAILA v L5 April 6 1926. flop} H. LANDSIED" CALCULATING MACHINE Original Filed March 31 I 192 4 Sheets-Sheet 2 BESTAVA COP April 6, 1926;;

.H. LANDSIEDEL CALCULATING MACHINE briginal Filed r h 1924 4 Sheets-Sheet s [N V [5N TOR.

l/mmr Lamps/054, B Y 72 fi- 9 Ms A TTORNE rs.

BEST AVAILABLE CO? April 1926. 1,579,544

H. LANDSIEDEL CALCULATING MACHINE Original Filed H'lICh 31 192 4 SheetsSheet 4 IIhisinventionto, calculatingma'- t An object of theinventionis toprovide a waste... 6, 1926.. 1,579,544

commie!- cntonmangpgro, a cosrommon or on o".

., Fig. -6 is'a:view of the calculating pinions 'Laxnsmm-zc, 'andactuatingracks i'ndicatingthe direction es.; esiding at of operationin performing- -examples' of ohlo f hafvein-d" it'dditiong.

6 ventedanewland usefuljCalciilating Mm1- Fig)? .is 'a plan view showing the rela- Another ohject-Iof the invention is to chine.

following is 1)ecifica-' i t mship and position of the parts shown in Fig. 8 isa'rear elevation of the machine containing the invention. 5 Fig. 9 is a view showing a part. ofthe ct culating machine with-simplified 'nieclmdevices for inoving the pinions into and out nism operable in the'perfornninco of exam- 1 of operative engagement with their -operat-' ples of addition-.or.subtraction asdesired, i lg 'fl l i The machin'e ili which the present; invenand actuatorsifor actuating one part'of saidmeehanism directlyiin'the performance of tion is showncompfisesthe-usual nnmeralf examples of addition. and fo'r-aettiatinigan ,key, levers '1, 'dittfercnt'ia' i:n'iechanism 2, the other'part of said mechanism directiy -in-the racks 3 contmlled by the diticrential mechperformance of examples of subtractionanism and associated with and limiting .ex

Another object of the invention. isto protent of-movement of the type carriers 4, the ride acalculating machine -equippedwithshaft- 5 upon which t'h'ei type carriers and mechanism of the-"char cter and operating racks-are pivotally supported the laterally in the manner stated and in-whi'ch the two -movahle paper carriage 6 having a platen parts of the mechanisms controlleddirectly therein for feeding paper. to be printed upon by said 'actuators' are themselves operahly by type? mounted, 'on the type carriers. connected S0 that thatpart- .of said mechahannuers flfordiiv ing the type 7 to print nism which is operated by said actuatois will on the paper in the papercarriage, adding pinions 9 operated hy the racks 3' in adding operate the other part of .said mechanism.

and clearing i'iperations. a total key 10, the

suht'otal her 11 and the link 1:2 controlled by the total he and subtotal key. The link 1:! controls the parts permitting operation of equip an adding and listing. machine of known construction and mode of operation with the mechanisms mentioned.

Other objects will appear from the following description. reference beiugmade to the drawings in which Fig. 1 is a side elevation of the present invention embodied in a Dalton adding .ma-

tions in the usual manner. The type carriers and racks are actuated fm'wardl hv springs 13, connected to the rearwardly extended arms 14 in connection with the type carriers and are returned to their starting positions by a hail rod 15 operated in the usual manner h v connections from the main shaft 16., v

The present invention is cool'wrativcly as- Sociated with the ahove descrihel familiar mechanism. Each t vpe carrier arm it has 'a link-1T connecting'it with a slide l-' guided by a grooved shaft- 1t). A rack plate 21'! i mounted on each of the slides 18 h pin and slot connection 21. Each plate 20 is provided withtwo racks formed in different vertical planes. of which the. rack 22 is at the upper end of the plate 1:21;? thev Fig. 2 is an enlarged view showing the calculating pinio'ns and actuatin}; racks therefor in their normal .or clean positions.

Fig. 3 is a view of the same devim's in r the positions they occupy \vhenanaking a transfer from lower to higher denominational orders.

F ig; 4 is a view oi the calculating pinions and actuating racks indicating the direction of operation in performing examples of subtraction.

Fig. 5 is a plan view showing the rela; tionship of the parts shown in Fig. 4.

'0, LSSI'G NoB' some DALTON ADDING the machine in clearing and subtotal operatlt) ' side of the machine relative to the rack 22.

The plate 20 is actuated upwardly by a spring 24.

An upper shaft and a lower shaft 26 are supported by a pair of swinging arms 27,

'the lower ends of which are connected. with the shaft 28. A series of'pinions 29 are rotative on the shaft 25 by the racks 22, and a series of pinion-30 are rotative on the shaft 26 by the racks 23. The pinions 29 mesh with the-pinions 30 and are in vertical alinement therewith so that when the pinions 29 are'engaged with the racks 22 the pinions 30 are out of engagement with the racks 23 and vice versa (Figs. 5 and 7). Each of the pinions 29 is attachedto a transfer tripdisc 31 having a cam shoulder 32 for each series of ten teeth on the pinions. As shown each pinion 29 is provided with forty teeth, so that there are four cam shoulders 32 on each of the discs 31." Each of the pinions 30 is attachcd to a transferptrip disc 33 having a cam shoulder 34 for .each series of ten teeth on the pinion. As shown, each pinion 30 is provided with forty teeth so that there are four cam shoulders 34' on each of the discs 33. A series of transfer latches 35 for the discs 31 are pivotally supported upon a rod 36 and have shouldered ends 37 upon which the cam shoulders 32 rest when the ca1culating device is clear and when the pinions 29 engage the racks 22 (Fig. 2). A .series of transfer latches 38 for the discs 33 are pivot- .ally supported upon a rod 39 and have shouldered ends 40 against the beveled under edges of which the beveled edges ofthecam shoulders 34 rest when the calculating device is clear and when the pinions 30 engage the racks 23. But when the inions 29 are in line with their racks 22 an their latches the )inions 30 are out of line with their racks 2 and their latches 38, and vice versa. The latches 35 are connected with the corresponding latches 38 by links 41 and both series of latches38 are actuated to latching position by springs 42 connected with the latches Also, each two con'nected latches and 38-are moved to unlatching position at the same time because of their link connection'41 (Fig. 3 I

\Vhen the machine is clear and at rest pawls 43, pivotally supported upon arod 44, extend over andcngage the upper ends of the rack plates 20 and thereby hold said rack plates down in their lower'position's. The pawls 43 have iingcrs"' 45=on their lower ends engaging extended portions of 'thelatches 35 when said latches 35 are in latching position. The pawls4-3 are thereby held in position to prevent upward transfer movement of the rack plates 20. \Vhen any one of the latches 35 is operated by its corresponding transfer trip disc 31, or when any one of the BEST AVAILABLE COPi latches 38 is operated by its corresponding disc 33, the extended portion of the latch 35 is raised above the finger-.45. (Fig. 3) permiti ting the spring 46 of the corresponding latch pawl 43 to actuate the same from the position shown in Fig. 2 to the position shown in F ig; 3, thus permitting upward transfer movement of the corresponding rack plate 20. This is irrespective of whether the latches 35 and 38 were operated by the transfer trip disc 31 or by the transfer trip disc 33. After any transfer movement the released pawl or pawls 43 are restored to normalposition by a bail 47 supported on the rod 44 and operated by a link 48, at the next operation of the main shaft 16 of the ma- .chine, as hereinafter described.

I will now describe the mechanism for shifting the

pinions

29 and 30 to and from positions for operation by their respective racks. 22 and 23. -The normal position is that in which the inions 29 are in position for operation by the racks 22 and in which the pinions 30 are out of line with their racks 23 (Figs. 6 and 7). When the parts are in such relationship the machine may be operated in ordinary addition. When it is desired to operate the machine in the performanceof examples ofsubtraction it is necessary to shift the pinions to position so that the pinions 30 will be operated by the racks 23 so that the pinions 29 will be out of line with the racks 22. A- pair of arms 49 engaging a-grooved part 5070f the shaft 28 arerigid with a rod 51., An. arm 52 (Figs. 1 and 8) also rigid with the rod 51 has a projection 53 engaging in a cam slot 54 in vertically sliding support 55 which is normally in its lower position thereby holding the shaft 28 in an adjustment in which the pinions 29 are in line with the racks 22, thus normally maintainingthe machine in condition for operation in ordinary addition. When the sliding support 55 is raised the connections are operated to shift the shaft 28 to' move the pinions 30 into line with the racks 23 and move the pinions 29 out of line with the racks 22. A normally raised subtraction key lever 56 (Fig. 1) is pivotally Sll)1)0lt(l on a shaft 57. A link 58 ispivote to an extension of the lever 56 above'th'e shaft 57 and is moved forwardly when the key lever 57 is depressed. A part 59 is pivoted to the rear end of the link'58 and has'pin and slot connection 60 with the support 55:- A hook 61 is on the part 59.

A pair of spaced rocking parts 62 are on a support 63 and support a cross connection 64above which the hook 61is extended when the key lever 56 is depressed. The-linlr 48 Hui neeted with one of the parts 62 and has pin in slot connection 67 with an arm 68 attachcd to another arm 6!) upon a supportit). A link 71,,eonnects the arm 69 with an arm 7:! on the main shaft. 16. Thus, when the key lever 56 is depres ed to more the hook -61 over the cross connection (it and the mam shaft 16 is thereafter turned in a ftn'ward direction, the link 71 will operate the connections therefrom first to raise the cross connection 64 and thereby raise the hook til and the support 55, shifting the shaft 23 toward the left when viewed from the rear.

(Fig. 8) thereby moving the pinions 3t) and their connected tmnsl'er t-ripdiscs to cooperative relationship with the racks 23 and the latches 38 respectively; and also movinzfthe pinions 29 and their connect ed transfer"dises 31 out of eo operative relationship with the racks .22 and the latches 35 respectively. One edge of the support i has notches 7 with which a spring actuated latch detent T-l engages to hold said support in its raised or lowered position; The latch detent 7- will hold the support in its raised position so long as the key lever 56 remains depressed to hold the'hook 6L -|he high point of the cam against the roll above the cross mnne-stion 64. If the key levers 56 he raised the link moves to-the tear. thereby moringtliedlbok'61 out of .pnsit-ion for engagementjhythc eross'conf nection 6-! and moving a finger in position-forfengagemeut h a cross connection 76 between the parts (Eon the neat operatioriof the main shaft 16. Contact of the. cross connection 76 with the finger 75 will push. the support 55 to its lower position and, through the connections described. will ymovethe inions, 29 and their connected transfer'tnp-dises 31 ".to cooperative relav .L-tionshipwith theraekgi 22' and latches :35 .:.,.respceti\ el and willfii ovo the pinions 30 and tlieir conneeted transfer trip discs 33 0| e "'i'itckslflil 'and'I-thelatches 'StQ-respeflivelm' 1; 1-Tlie' mechanismP-for swinging the pinions and 30'. into nndio'nt of engagementwith their

racks

22 and 23 is somewhat'shnilar 't themcchmusm disclosed for the wrform andQY-a cam plate 77 is pivoted upon a supi v port to and engages a roll 1 9 i|1wirtl|e :ulaeentiarm9i",- 'hen the high point of the v i-an plate 77 engages the roll 79 it retains "tln-Jnn'ons 20am] St) in position for opera- ,tion' by the filtliS-Q'l and 2:2 as the case may e. depending upon the lateral positions ofv arms 2'; swing to position to carry the pinions '29 and 30 out of position for opera tion h vthe racks 22' and 23. -\t the heginning of each forward turning movement of 'movcment of the shaft 16 the shoulder.on-

'speetive racks 22 or 23 f on tlie" iforward-' aiding the deviies that-operate the -"ea cooperatuei rela'tionsli pljwith the aneeof the same duties in the application of lvaltcr Vin. Landsiedel. Serial NoQIiSGDZfiQ tihal lannary"1491924. \s" shown (Figs. 1

and. hv'eoutai't with the-projection 95 -Sflltl ptnions: and when the low part oltln'. cam plate 77 is in line with the roll 7! thethe shaft 16, except in the case of listing a total or result, the cam plate T7 is moved to permit disengagement of the pinions from the racks, and at the beginning of each retnru movement. of the shaft 16 the cam plate 'ii' is operated to engage the pinions with the racks. i

;-\n oppositelyshouldered pawl 80 is pivotall supported hy the arm BS and operated in one direction by a spring 81. A memher S2 pivoted on the support- 78 has an arm 5 pivoted to a plate 84 havingpin in slot. connection 85 withthe cam plate T7. The pivotal connection between the arm S3 and the plate 84 comprises a pin on the arm -53 80 extending into-a can) shit-S4" in the plate -84. iy reference to Fig. lit will be seen that at the beginning of the forwnrdturning movement'of the shaft 16 the shoulder on one sideof the pawl SO'wiU engage aprojection 86 on the member 32 and operate p 1 the connected parts to movethe high point p of the eam plate 77 frointherpll 79. -At the beginning of the back or return turning" the opposite side of. the pawl cngagt; a e pro wtionfi'f on the member S2-and moves T! therehy engaging. the pinions with the; 4 racks 22. or-the pinions- 30 with the rack L3 as the case maybe ff 'heirthe machine is to he 'elearedor any total or remainder contained'in thejpinioini :2!) or 30 is to lpprintedr it is-ntnessary that the pinionsremain in mesh'iiwith their; re-

stroke. Thel'ink'lzl that is pushed. to therear hy operation of either W -total or snhtotal key trims conneetions '-f or h;

at the lx ginnlngfgof the movement of the- -shaft- 1 has :in arm 8. mnneeled the support W. 'lit'n-th toward the rear;the"ll orizontal-arm-of the .hell crank lever. 93. is" unwed?downwardly pushes the plate- 4 downwardly. -'lhe pin ii. slot connection. between the:memla'r-sai t; I and the plate 81- turns-"tho member 3210 I a ]N:-'iliou in which it'will not engage the pin St; during the forward stroke. This leaves-"the

pinions

22 or 30 in mesh with" their racks :21! or 23 asthe case may he. The lit 10 holds the link 12 in its rearward position --tiring the return strokev so.-tll:tt. 9

'JCSTA VA/LABL thus permitting the plate 84 to be raised by a spring 97. \Vhen the plate 84 is in its raised position the pawl 80. will not engage the projection 87 during the return stroke, leaving the pinions 29 and 30in mesh with their

racks

22 and 23.

The invention is capable of wide varia- I tion. within equivalent limits and I contemplate such variation as maybe desirable or i useful in the particular adaptation of the series of racks, two series of intermeshing pinions for-operation by said seriesotracks respectively, meansfor shift ng said pinions invention shown, or in its adaptation to other machines.

I do not restrict myself in any unessential particulars, hutwhat I, claim and desire to secure by Letters Patent is 9- 1. A calculating machine comprising a series of actuators, two series of racks operated by said series of actuators, a series of pinions for operation by each series ofracks. a series of transfer latches for each series of pinions, and connections for operating one series of transfer latches by the other.

2. A calculating machine comprising a series of actuators, two series of connected raclis' operated by said actuators, a series of pinions for operation by each series of racks, devices for preventing transfer operation of said racks, and means operated by either series of pinions for releasing said. devices to permit transfer operation of'said racks. j v

3. A calculating machine comprising a series of rack plates, two series of racks in connection with said rack plates, mechanism for operating said rack plates, a S 8ll(:S Of pinionsijori operation by each series of rack plates, :1 series of transfer devices for ,i

each series of inions, and means operating the transfer evices of one series by the transfer, devices of the other series.

I ilt'A calculating machine comprising two to mesh either series of pinions with the corresponding series of racks,'and transfer mechanism controlled by said piniorfi for controlling'transfer operation of said racks.

5. A calculating machine comprising two series of connected unalined racks, two series of pinions for operation by said two series of racks respectively, an element holding each pair of connected racks from transfer movement, and a device operated by each series of pinions for causing said elements to release said racks for transfer movement.

E OP

6. A calculating machine comprising two series of connected unalined racks, two series of intermeshing pinions for operation by said two series of racks respectively, mechanism for shifting said two series of pinions to positions in which either series of the. pinions will be operated by the corresponding series of racks, and mechanism controlled by each series of pinions controlling transfer operations of said racks.

7. A-caleulating machine comprising two series of connected unalined racks, two series of intermeshing pinions for operation bysaid two series of racks respectively, mechanism. for shifting said two series'of pinions to positions in which either series of the pinions will be operated by the cor: responding series of racks, anelementholdingea'ch pair of connected racks from transfer movement, and mechanism controlled by each series of pinions for causing said elements to release said racks for transfer movement. v

. 8. A calculating machine comprising a series of racks, an additional series of racks out of alinement with said first series of racks, two series of internleshing )iIliOHS for operation by said twoseries 0 racks respectively, means for moving said pinions to mesh either series of pinions with the corresponding series of racks, and mechanism for operating said racks.

.9. A calculating machine comprising a series of racks, an additional series of racks out of alinement with said first series of racks, (two series of intermeshing inions for-operation by said twoseries 0 racks respectively, 'means for moving said pinions to mesh either series .of pinions with the corresponding series of racks, .mechanism for operating said racks, and transfer mechanism controlled by each series of pin ions for controlling. transfer operation of saidracks. i

10. A calculating machine comprising 119 a series. of .raclgs, an ,,'ad (litionalseries ofracks out of alinementtwith said first series, of racks,- two, series of'-- -in,termesl iing pinions fQroperation by said two se ries of racks respectively, meanstor moving said pinions tomesh either. ser es offpinions with the corresponding series f of racks,

mechanism for operating said-(racks, trans fer mechanism controlled, by/eachscries of pinions for controlling transfer operation of said racks, and means for restoringsaid transfer mechanism to non-transferring position. I ll. Acalculating'rnachinecomprising differential mechanism, a series of type carrie rscontrolled by said diilerential mechanism, two series of racks opcratedby said typecarriers, a series-of pinions for each series of racks, means for mcshingeither, series of pinions with the corresponding scries of racks, and means controlling transfor operation of said raclrsf 12. In a calculating machine, the combination with aseries of diilerentially operable type carriers, of two series of racks operated by said type carriers, a series of pinions for operation by each series of racks, and a series of'elements controlled by both series of pinions controlling transfer, operation of said racks.

13. In a calculating machine, the eombi-, nation with a series of ditl'eretially operable type carriers, of a series of actuators oper ated by said type carriers,tw0 series of racks operated by said actuators, two series of intermeshing pinions for operation by sa i'd two series of racks respectively, mechanism for meshing either series of. pinions with the correspondingseries of racks. and transfer mechanism controlled by said pinionscontrolling transfer operation of said racks.

14. In a calculating machine, the combii nation with a series of differentially operable type carriers and adding mechanism operated by said type carriers. of a set of actuators operated by said type carliiers, a

series of 'raclts operated by said actuators, a series of calculating pinions operated by said racks, and transfer mechanism controlled hy said calcuating pinions controlling transfer operation of said racks.

15. In a calculating machine. the combination with differentially operable type carriers, of a series of slides operated by said type carriers, apair'of raclrs supported by said slides. two series of intermeshing pinions for operation by the racks of said pairs of racks respectively, and mechanism con trolled by said pinions controlling transfer operation of said racks.-

16. in a calculating machine, the com bination with differentially operable type carriers, of a series of slides operated by said type carriers, a pair of racks'supported by said slides. two series of 'intermeshing pinions for operation by the racks of said pairs of racks respectively, mechanism controllcdby said pinionscontrolling trans rer operation of said 'raclr's', a swinging frame supporting-said two series of pinions, and mechanism controlling said frame to hold said pinions in properrrelationship to said racks. Y

17. A calculating machine comprising a series of slides, two series of racks supported by said slides in a relationship in which the racks of each series are out of alinement with the racks of the other series, a series of intermes'hing tion by each series of rac s, mechanism for shiftingsaid pinions from one position to another to mesh either series of pinions with the corresponding series of racks. and mezlzins controlling transfer operation of said me 5.

inions for opera- T AVAILABLE com 18. A calculating machine comprising a series of slides, two series of racks supported by said slides in a relationship in which the racks of each series are out of alinement with the racksof the other series,

a series of intermeshing pinions for opera tion by each series of racks, mechanism for shifting said pinions-from one position to another to mesh either series of pinions with the corresponding series of racks, means controlling transfer operation of said racks, and mechanism for clearing said series of pinions for tripping theccorresponding series of latches, and means controlled by said latches controlling transfer operation of said racks.

20. A calculating machine comprisinga series of slides, two series of racks supported by said slides in a relationshipin which the racks ofeach series are out of alinemcnt with the racks of the other series, two series of intcrmeshing pinions for operation by said series of racks respectively, a series of transfer latches for each series of pinions,

a series of transfer trip elements for each series of pinions for tripping the corresponding series of latches. means controlled by said latches controlling transfer operation of said racks. and means for. moving said series of pinions to place either seriesv of pinions in..cooperativerelationship with the corresponding series of racks and latches and the other series out of cooperative relationship with its corresponding series of'racks and latches. i

21. A calculating machine comprising two series of connected racksarranged in a relationship in which the rams of each.

series are out of aline rnent with the racks of the other-series, mechanism for operating said racks, two series of inte'rmeshing pinions-for operation by said series of racks 'respectively, a seriesof transfer latches for each series of pinions, a series of tripping elements for each series of pinions for tripping the corresponding transfer latches, and means for moving said series of pinions and said tripping elements to place either series of pinions and tripping elements in cooperative relatic ship with the corresponding series of racks'and transfer latches.

223A calculating machine comprising two series of connected racks arranged in a relationship in which the racks of each series are out of a-hnement. with the rack= lzi:

g of the other series, mechanism ,,for operating said racks, two series of intermeshing PlBIOllS for operation bysaid series of racks respectlvely, a series of transfer latches for each series of pinions, a series of tripping elements for each series of pinions for tripping the corresponding transfer latches, means for moving said series of pinions and said trippingelements to place-either series of pinions and tripping elements in cooperative relationship with the corresponding series of racks and transfer latches, and a device controlled by each latch of one series of latches controlling transfer operation of the corresponding rack and the connected rack.

,23. A calculating machine comprising two series of connected racks arranged in a relationship in which the racks of each series are out of alinement with the racks of the other series, mechanism for operating said racks, two series of intermeshing pinions for operation by said series of racks respectively, a series of transfer latches for each series of pinions, a series of tripping elements for each series of pinions for tripping the corseries of connected racks arranged in a 'relationship in which the racks of each series areout of alinement with the racks of the other series, mechanism for operating said racks, two series of intermeshing-pinions for operation by said series of racks respectively, a series of transfer latches for each series of pinions, a series of tripping e-le-' ments for eachseries of .pinions for trip-, ping the corresponding transfer latches; meansfor moving said series of pinionsand said tripping elements to place either series of pinions and tripping elements in cooperative relationship with the corresponding series of racks and transfer latches, a device controlled by each latch of one series of "latches controlling transfer operation of the corresponding rack and the connected rack, and mechanism for recordin the number contained in either series 0 pinions and clearing said pinions. I

25. A calculating machine comprising a series of pivoted type carriers, a-series of supports pivotally supported by said type carriers, two, series of racks in connection with said supports, series of pinions for operations by said series of racks respect ve- BEST AVAILABLE coPx ly, and means for controlling transferoperation of said pinions.

26. A calculatingmachine comprising a shaft, aseries of type carriers pivoted upon said shaft, a series of racks pivoted upon said shaft, addingmechanism operated by said racks, a series of supports pivotally connected with said type carriers, racks carried by said supports, and calculating mechanism operated by said last named racks.

- 27. A calculating machine comprising a shaft, a series of t pe carriers pivoted upon said shaft, a series of racks pivoted upon said shaft, adding mechanism operated by said racks, a series of supports pivotally connected with said type carriers, racks carried by said supports, calculating mechanism operated by said last named racks, and means controlling transfer operation of said last named racks.

28. A calculating machine comprising a series of pivoted arms, a series of pivoted racks limiting extent of movement of said arms in one direction, adding mechanism operatedby said racks, a set of calculating pinions, and mechanism operatedby said arms for operating said calculating pinions;

29. A calculating machine comprising a series of pivotedarms, a series of pivoted racks limiting extent of movement-of said arms in one direction, adding mechanism operated by said racks, a set of calculating pinions, mechanism operated by said arms for operating said calculating pinions, and means controlling transfer operation of said mechanism.

30. A calculating machine comprisin a shaft, racks pivoted on said shaft, adding mechanism operated by said racks, difi'erentlal mechanism limiting extent of movement of said racks, arms pivoted on said shaft, :1,

set of calculating pinions,- and mechanism controlled by said arms for operating sald calculating pinions.

31. A calculating machine comprising a shaft, racks pivoted on said shaft, adding mechanism operated by said'racks, diifcrential mechanism limiting extent of movement of said racks, arms pivoted on said sh'aft, a set of calculating pinions, mechanism controlled by saidsarms for operating said calculating pinions, and recording mechanism coo erative with said racks, said adding mec lanism and said calculating pinions.

32..A machine of the character described comprising a series of pivoted arms, a series ofzsupports' pivotally supported by said arms, calculating mechanism, and means carried by said supports for operating said calculating mechanism in adding andtransfer operations.

33. Amachine of the character described oomprisin a shaft, a series ofpivoted arms,

a series 0 supports pivotally supported by.

BEST AVAlLABLE COPi of racks pivoted on said shaft for limiting 'extent of movementof said arms, dltl'erential mechanism controlling said racks. and

adding mechanism operated by said racks.

34. A machine of the character described comprising a shaft, a series of pivoted arms, a series of supports pivotally supported by said arms. calculating mechanism. and means carried by said supports for operating said calculating mechanism in adding and trans fer operations.in comhination with ascrigs of racks pivoted on said shaft for limiting extent of movement of said arms. differential mechanism controlling'said racks, adding mechanism operated by said-racks, and

series of" racks, a single series of supports for supporting and operating said two series of racks, and two ser es of-calculatmg pinions operated by said two series of racks respectively. n I

36. Acalculating machine comprising two series ofracks, a single series of supports for supporting and operating said two series of racks; two series of calculating pinions operated by said two series of racks respectively, and recording mechanism cooperative with said calculating pinions.

37. A machine of the character described comprising differential mechanism; a series of racks controlled by said differential mech-o auism, adding pinious operative'by said racks. two additional series of racks con,- trolled as to extent of movement byv said first series of racks. and calculating mecha.

recording mechanism operative, to record enisms operated by said two additional series numbers from said calculating mechanism and from said adding mechanism. 35. A calculating machine comprising two of racks.