US1528390A - Combined typewriting and computing-machine - Google Patents

Description

Mar. 3, 132's. '1',5'2s,390

- 'L. L. ANSART COMBINED TYPEWRITING AND COMPUTING MACHINE Filed July 19, 1921 2 Sheets-Sheet 1 Mar. 3, 1925.

L. L, ANSART COMBINED TYPE-WRITING AND COMPUTING MACHINE 2 Sheets-Sheet 2 Filed July 19, 1921 Patented Mar. 3, 1925 UNITEDI STATE.S PATENT OFFICE.

,IOUISJZ. ANSART," OF NEW YORK, N. 'Y., ASSIGNO'R TO: UNDERWOOD COMPUTING MACHINE COMPANY, OF NEW YORK, 'N.

Y., A CORPORATION OF NEW YORK.

Application filed July 19, 1921. Serial' No.. 455,931.

To all whom it may concern.

Be it known that I. LOUIS L. ANsART, a citizen of the United States, residing. in borough of the Bronx, in the county of the BronX,-city and State of New York, have invented certain new and useful Improvements in Combined Typewriting and Com:

puting Machines, of which the'following 1's a specification.

This invention relates to-combined typevwriting and computing machines, and is in the nature of an improvement on the application of Frederick A. Hart, Serial No. (365,315, filed December 12, 1911 (now Patent N 0. 1,388,257, dated August 23, 1921).

In said application, provision is made of means whereby, after typing numbers in diffcrent columns and registering the totals a result or total obtained from computing the same in a register or totalizer, automatic. printing of such may be effected in a column reserved for the total, the mechanism being rendered effective for such automatic typing by proper setting of a manually operable member. The printing of such total, how-- ever, is accompanied by the operation ofindcxing the same, a result which is not-desired, and the indexing mechanism must be restored to normal condition before performing other computations. This may be done by means of the error or elimination key.

According to the vision is made whereby, upon setting the machine for automatic total-printing, the computing mechanism will be set for subtraction, so that, during said printing or typing, the complement of the totalwillbe indexed. Then, upon operation of the generaloperator, the complement of the result will be run into the totalizer and the latter cleared.

Provision' may be made of means whereby actuation of the general operator will reset the machine from a condition for total printing to a normal condition.

The total-printing mechanism may include an electric motor, the circuit of which present lnventlon, pro

is closed bya'suitable switch or circuitclo siug .device when the machine is set for,

total-printingh This I motor may also .be utilized at th completion of such total- .,printing to actuate th'egeneral operator.

For this purpose, a clutch device is rendered effective to connect the general operator with the motor, and the circuit is closed through a second switch or circuit-closer in parallel with thefirst. Upon actuation of the general operator to restore the machine to normal condition, the motor circuit will be broken at the first switch. At this stage of the opegation, the movement of the general operator has not been completed, but, inas-- much as the second switch was closed at the time'the general operator was clutched to the motor, the latter will be effective to return the general operator to its normal posi- -t1on, at which time the secondzswitch will be opened and the motor circuit broken.

Other features and advantages will'here-' tions.

Figure 2 is aperspective front View of the prlncipal members of the denominatlondetermining mechanism, and also the'mechanism by which each dial or computing wheel selects the digit to be typed upon the work-sheet.

Figure 3 is a diagrammatic side elevation, showing the means whereby the motor circuit is controlled.

Figure 4 is a. rear elevation of a setof transposition bails forming part of the mechanism for controllin total-printing.

Figure 5 is a-view of the transposition bails as seen from above.

When \the carriage of a combinedtypewriting and computing machine of the Underwood-Hanson type is' advanced, step by step througha computing zone, rods or links 10- will be actuated seriatim, to rock pivoted levers 11, and, by means-of suitable transposition linkages 12, lift denominatiom;

I tion'by detent levers 40 urged by springs 41;

.to the number-wheels 35.- Upon completion a1 bars 13, so that pins 14 thereon will be positioned to enable setting thereof, by' pm- .setting bars 15.

thereof brought into engagement with the pins; depressed. The bars 13 will then be advanced in accordance with the digits indexed, such motion being transmitted by racks 33, on the bars 13, to pinions 34 having the usual one-way connections with numberwheels or dial-wheels 35.

During the forward movement'of the gen-- eral operator, 'arack 36, forming part.there-- of, rotates an idle gear 37 and a second gear 38 to actuate, by a suitable one-way connection, a square'shaft 39, forming a part of the carryover mechanism, the numberwheels being normally maintained'in posiagainst suitable toothed wheels 42, secured of the carry-over operation, the result may be read through a suitablesight opening 43 thecomputer casing 44.

The reciprocation of the general o" erator '21 may be effected automatically. ozthis end, by suitable means, not shown, as the carriage passes .out of the computin zone, a link 45 will be depressed to rock' aiail 46 and thereby withdraw a latch, 47 fromjja position above the rear end of a lever The lever 48, when released,;wil l in a counter-clockwise direction, by suitab e means, such as a' spring, not shown, about. its ivot 49, so that its forward end; which over ies a pm 50 on a slide 51, will cause depression of the-slide; Such depression will rock a lever 52 to lift a trip pin 53 out of the" ath of,a lug A spring 55 will then ecoine efi'ec'tive'to'shift a ring or member 56, of which 111g 54 forms a part, and a ball 57 will bemoved into position to-.,clutch a cup 58, fixed on ashaft 59, to a'sleeve or'hub 60, loosely. mounted on said shaft. Said a clockwise direction will cause actuation sleeve or hub "60 issecured to or forms a part of a worm-wheel 61, and it will be seen that rotation of the" worm-wheel 61 in of the shaft 59.?-

hub-60, in addition to rendering the clutch-;

The rotation of the 'r' 56, relative to the inglmeans effective, will cause contacts 62 and 63 of. conductors 64 and65 to be brought into engagement, so as to complete circuit through a-source of power 66, a'conductor67 Q universal bar 86 e and a motor 68, substantially as disclosedin the patent to Frederick A. Hart, No. 1,237,-

will then operate until the circuit isbroken, and, by means of a suitable connection, in-

dicated in general by 69, will rotate a shaft '70 and cause a worm 71 thereon to rotate the'worm-wheel 61 in a clockwise direction, and, consequently, the'shaft 59, as long as the clutching means, previous] described,

is'eflcctive. .Such rotation of s aft 59 will effect reciprocation of the general operator 900 dated August 21, 1917. The motor 68 21 b means of a member 72 extending up war 1y into a yoke 73, secured to the general operator. At the end of one complete rotation of the wheel 61, the pin 53 *willagain be engaged by the lug 54 and will cause the ball clutch to become ineffective and the motor circuit to be broken at contacts 62 and'63. a f

)VVhen it'is desired to set the machine for subtraction, a subtraction key, not shown, may be actuated to move'a thrust link or bar 74 rearwardly, and,.by means of an arm 75, rock a shaft 76, on which said arm'is fixed. By this movement of the shaft 7 6, a tooth 77 of a hook-like latch-member 78 will be withdrawn from engagementwith a shoulder formed at the forward end vof a notch 79 in a subtraction bar. 80, thereby releasing the latter.

- Upon such release, the subtraction bar nection with anarm 82'on, a shaft 83, will rock the latter; An arm. (fixed on the shaft, will actuate, vbya'ffp a i n a universal about an axis near its ripper-edge lower edge of the ment of :the universal bari '86, the shafts will beadvan'cedito the position shown in Figure '1. Atithe 1 same time, by suitable means, not'shown, a ibar' 8 8 will be actuated toldepress the forward. ends of levers 89, and 7 thereby depress the 9 pins. As will be -with will depress,on the' selected bar, the 'pin correspondingto the complement, "to

the base nine, of the digit printed, the '9 pin on the selected bar bemg' reset to ,7 dsinto notches87 in the shafts 18,-and, JasiaI-result of this move- 'understood bythose ski led in the art, such normal position at the time the other pin is set. In order to obtain such resetting of the 9; pins, provision is made o storing linkage, having a' lower bar 90 and an upper .bar 91, and means whereby, upon adva'neemovement of the shafts 18 to the position shown in Figure 1 arms 92 on'tfie traction-setting spring 111.

. the two ends move simultaneously. Each on the pendant beneath the position to actuate the upper bar 91 and therefore depress the Tower bar 90, the position of-the lower bar -90 being such that it will not be effective for resetting purposes unless a pin-bar has been selected and raised to pin-setting" position. The submechamsm is, in general, similar to that shown in the patent to Minton, No; 1,280,065, dated September 24, 1918.

Fol-automatic total-printing, provision is made of a special operator 93 for each keylever operated by a numeral-key. Each operator 93 has a finger 94 overlying a-pin sponding key-lever, and is normally urged downward by means of a spring 96, connected at it upper end to a pin 97 on the operator 93, and at its lower end to a lug 98 on a fixed part of the frame. Each spring 96 is of sufiicient strength to actuate the corresponding key-lever, and each oper ator 93 is norma'ly held in raised or ineffective position by suitable means, which may comprise a roll 99 mounted by means of a screw-stud 100 on the operator, and a suitable cam, such as a snail cam 101, normally positioned with its high point in engagement with the roll 99, as shown in F ig-.

ure 1.

Each cam 101 is loosely mounted on a shaft 102, and may be actuated thereby through a v suitable clutch or clutching device, including a shell 103 connected with the a sleeve 104 fixed on the shaft, 3, ball 104; whereby the shell and sleeve may be operatively connected, a ring or incmber 105 for controlling the position of the ball, and a spring 106 urging the ring 105 in the direction to make fective. Normally, the controlling ring 105 is held in position to render the c'utching device ineffective bymeans of a bell-crank 107, mounted on a fixed pivot 108, and having a hook 109 overlying a lug 110 on the ring 105, the bell-crank 107 being normally urged to effective position by means of a There are ten of the clutching devices,

and, taken in -order-from -left toright, they control the key-levers corresponding to the digits from 1 to 97, inclusive and 0, Tc actuate thebell-cranks 107 to release the rings 105 in the corresponding clutchin' devices, Iinkagesare provided, one for'eac bet-crank, each "of ,said linkages comprising-a lower ban-112 having at each end an upright arm 113, pivoted to a horizontal arm of a bell-crank 114, of which the downwardly-extending arm is pivoted to a bar 115, which serves to make the bell cranks at bar 112 is provided with a tooth 116 lying rearwardly-extending arm 117 of the corresponding bell-crank 107. As

16 attachedto the corre-- the clutching device ef-- tending tooth tion of the machine,

herein disclosed, the rear bar 112 has a tooth beneath the left-hand bel -crank,

which controls a clutch for the 1 key, and the other bars 112, taken in order from back to front, have teeth under the rearwardly-extending arms of the bell-cranks 107 which control the actuation of the numeral types 2 to 9, inclusive'and 0 In order to cause printing in a given denomination of a digit exposed on the corresponding.) number-wheel, each numberwheel is provided with suitable means, such as a snail cam 118, which controls the position of a lever 119 having a lug 120 norma 1y held in engagement with the'cam by means of a spring 120, attached at one end to the lever 119 ata. point beneath its pivot 121 and connected at the front of the computer casing 44 to alug 121. The lower end of the lever 119 is connected by 3 means of a link .122 withthe upper end of a lever 123 pivoted at 12 1,- and having at its lower end a slot-125, into which projects a pin 126 on a rearwardly-extending "link or digit selector 127. Each link 1127 is guided for rectilinear movement by means of a lug 128 extending downwardly therefrom to rest on the upper surface of a shelf 129 and by means of a slotted plate 130, the link normally which, it passes.

Each of the links 1274is rovided with a tooth 131, the upper end of which lies immediately below the plane of the lowerresting on the bottom wall; "011 the slot through edges of the bars 112, so that it maybe T moved back and forth under said bars as the link 127 is 'moved rearwardly and forwardly. In Figure 2,, the snail cam 118, there shown, is in the position corresponding to a showing of 0 on the attached num her-Wheel, and the corresponding tooth 131 is-shown in position under the front bar 112, which, by means of its upwardly-ex- 116. is adapted to release the clutch corresponding to the 0 key-lever to enable operation of the latter by means of the corresponding operator 93.

nism just described serves merely selecting mechanism, in that the teeth corresponding to the different -number-wheels will be positioned v respectivel under the links corresponding tqthe digits shown on the number-wheels. In-an' ordinary operathemovement of these parts will be' idle.

It will be 1 evident from the foregoing that the mechaas digit- When it is desired to have the total shown 1 1 on the number wheels printed automatically, a handle 132 on a lever-133 is moved rear wardly to swing the-leverabout its pivot .1 34, and, by means ofa link 135 pivoted to the lower end of the ;latter and to an arm 136 fixed on a'shaft 137 at the rear of the machine, to rockthe shaft to swin a plate or bar 138 in counterrclockwise tion - 144. In order that the arms 143, which are .Figure 1, in which their rear ends engage in notches 141 in arms 142 extending downwardly from the levers 11.

At their forward ends, the denominational links 140 are .pivoted to downwardly-extending' arms 143 loosely mounted .on a shaft connected directly with the arms 142, may be associated with the number-wheels in the reverse order, suitable transposition-means must be provided. To this end, the righthand arm 143 is connected by means of a bail 145 with an upwardly-extending arm 146 pivotally mounted on the shaft 144. The second arm142, from the right, is con-' nectedwith an arm 146 by a bail-145 lying within the first bail 145. It will be evident that, by providing a bail for each of the arms 142, connected thereto at one end and at the other end to an np'rightcarm 146, the arrangement of the arms 146 will be reversed with reference to the 'arms 142. The arrangement of the transposition .bailsis clearly shown in Figures 4 and 5.

llhe"upwardly-extending arms 146 are connected byv suitably-shaped links 147 to the upright arms of bell-cranks 148 pivoted on a shaft 149, the horizontally-extending arms of the bell-cranks 148 being connected by-suitable links 150 with the rear-ends of normally horizontal levers 151, pivoted at their forward ends at 153 in brackets or I ears 154 secured .to the lower side of the shelf 129. Each of said levers 151 is provided with an upwardly-extending finger 155 immediately to-the rear of the slotted plate 130, and each of said fingers 155 is provided with a laterally-extendingpin 156 to engage the lower edge of one of the links I -At thev same time that the plate 138-is. shifted to bring the links 140 into operative connection with the arms142, an arm 157 on the shaft 137 is swung forwardly, and, by means of an arm 158 fixed on the shaft 76, withdrawsthe latch 78 from the notch 79 in subtraction bar 80, permitting the lat-- ter tobe drawn to the rear by the spring 81. The computing mechanism will then be set for subtraction. Shifting of the handler,

132 to the rear will also cause a member carried by the link 135, ,but insulated therefrom, to be shifted from its Figure 3 position to its Figure 1 position, in which it closes a circuit ,;.through the spring-pressed pins 160 and the motor .68 The motor will then actuate the sherif and by means of the beveled gears '161 and 162 rotate the horizontal shaft 163. At its right-hand end the shaft is connected member or bell-crank 107 from by a beveled gear (not shown) with a beveledgear 164 on" the lower end of a vertical shaft 165. The shaft 165 is geared at its upper end to the shaft 102 by means of a beveled gear 166 at the upper end of theshaft meshing with a beveled gear (not shown) on the shaft 102; As brought out more fully in said application, No. 665,315, the rotation of the shaft 102, when'actuated, will be in a clockwise direction, as indicate b the arrow in Figure 1.

Upon movement of the riage into the computing zone selected for typewriter cartotal-printing, the links 10 Will be operated v seriat-im from right to left and will select thepin bars 13 seriatim from left to right;

Actuation of links 10 will also serve to actuate the levers 151 seriatimfrom left to right i to lift the corresponding links 127. Since the reading on each number-Wheel .35 determines the bar 112, which is to be operated, actuation of each one of the levers 151 will actuate the proper bar 112 and thereby withdraw the hook 109 of the proper latching en ag'ement with a'lug' 110. The corresponding cam 101 will then be clutched ,to the shaft 10,2 in a manner hereinbefore described, and, as the high portion of the cam is moved to the right from engagement with the corresponding roll 99,.the proper actuator 93 will be released to the action of the spring .96

to cause typing of the proper d1git.' At

the same time the digit is typed, the corresponding pendant 16 will engage the corresponding arm 17 to depress one of the pins f' 14.- Since the mac 'ne has been set for subtraction, the. depression of the pins on the various pin or'rack-bars 1-3 will serve to index the complement of the number printed on the work-sheet, and, consequent- 1y, of the number appearing on the numberwheels' of the register.

Each actuation of a numeral-keywill also operate the typewriter escapement mecha-j nism (not shown), and cause another v 1O to be actuated, so that, after moving the machine into'the computing zone, the various digits will be printed automatically and'. the complementarynumber set up on the pin bars. I At the end, of such total-print-v ing, the link 45 of the motor-trip mechanism will be. depressed, and, by means hereinbefore described, lift the trip-pin 53 out of the path oflthe lug 54. j

The worm gear 61 will then be clutched to the shaft 59 and the general operator advanced to run the number indexed on the pin bars into the number-wheels35,

and, since the complement. of the total has been indexed on the pin bar s, such actuation of the pin bars will subtract the total. from the total as shown in the register, thereby clearing the latter. r v

Asthe general operator 21 approache no end of said lever 168 the forward end of itsmovemen't, a pin 167 thereon will strike the lower end of a lever 168 and swing the latter-about its pivot 169, sothat a link l'lfl connecting the upper with the lever 133 at pivot 134 will swing the normal position, thereby links 140 from the arms themotor circuit at the a point-below its handle 132 to its disconnecting the 142 and breaking pins 160. V ,7

The breaking of the circuit at the contact pins 160 willnot, however, tor, since, at the time the trip-pin 53 was lifted, the motor circuit was contacts 62 and 63 formingfpart of a branch in parallel-with that conta' g the contact pins 160. The motor 68 will, therefore, be

actuated until the lug 54 on the ring 56 is.

brou ht into engagement-with the trip-pin 53, therebv unclutching the worm gear 61 from the shaft- 59 and breaking the circuit by separating the contacts 62 and 63, therey with the numeral-keys by stopping the motor.

Variations may be resorted to the scope of the invention, and portionsof the improvements'may'be used without others.

Having thus described my invention, I claim -V y 1. In combination, typewriting mechanism including numeral-keys, numeral-keycontrolled computing mechanism including a totalizer, denominational elements in which digits are indexed, one by one, in accordance depressed, and aigeneral operator to run into said 'totalizer a number when completely indexed, and means whereby the numeral-keys ma be actuated automatically toefi'ect t ing, igit by digit, of the total shown in t e totalizer, and the denominational elements number.

2. In combination, typewriting mecha nism including numeral-keys, numeral-keycontrolled computing mechanism including a totalizer, denominational elements in which digits are indexed, one by one, in accordance with the numeral-keys depressed, and a general operator to run into said totalizer a number when completely indexed, and

means, rendered efiectiveat will, whereby the total shown the totalizer will be typed, digit by digit, in successive denominations. and, after the com letion of such action, the

. totalizer will 'be c eared.

stop the moalso closed by restored to normal condition preparatory to indexing another will to actuate said typewriting mechanism to A pe, digit by di it, the number registered in t 1e totalizer, and means whereby said suba totalizer, a general-operator to-run a num berso indexed into the totalizer, a motor mechanism, a manually-operable member, means whereby said member, when shifted to effective position, will render said motor mechanism effective and cause typing of the total shown in the totalizer and indexing of the complement thereof, and means whereby said member will beshifted to normal position as soon as the last digit of the total is printed. r

5. In a combined typewriting and computing machine, means to type numbers, digit by digit; and to index said digits as typed, a totalizer, a general operator to run. a number so indexed into\the totalizer, m0- tor mechanism, a manually-operable member, means whereby said member, when shifted to effective position,will render said,

motor mechanism effective to cause the total shown in the totalizer to be typed and the complement thereof indexed, and means effective upon printing the digit of lowest denomination in the total to cause said mo- 7 I tor mechanism to actuate erator.

6. Ina combined typewritingand computing machine, means to type numbers, digit by digit, and to index said digits as typed, a totalizer, a general operator to run a number so indexed into'the totalizer, motor mechanism, a manually-operable member, means whereby said member, when shifted to effective position, will render said motor mechanism effective to cause the total shown in the totalizer to-be typed and the complement thereof indexed, means effective upon printing the digit of lowest denomination in the total to cause said motor mechanism to actuate said general operator, and means whereby the general operator, when actuated, will restore said member to normal position.

7. In combination, nism including numeral-keys and numeraltypes actuable, one by one, in accordance with the keys depressed, computing mechanism including a totalizer, denominational elements in which digits are indexed in accordance with the keys depressed, numeralkey-actuated means for indexing digits in said elements, a general operator for run said general optypewriting mechaquent actuation of the general operator will-- 4 clear the totalizer.

ning a number so indexed into the totalizer,

and subtraction setting mechanism to cause the indexing of the complement of the num ber typed, automatic means rendered eflfective at will to actuate the numeral-keys, one by. one, in accordance with the total shown in the totalizer, and means whereby render- .ing said 'numeral-key-actuating means ef-.

fective' will cause said subtraction-setting mechanism to be actuated, sothat automatic printing of the total will cause the complement thereof to be indexed and subse- 8. In combinat'on, typewriting- .mecha 'nism including numeral-keys, computing tionalidevizes whichmechanism includinga totaliz'er and actuating means therefor, comprising denomina- 'gitsare indexed, one by one, in accordance with numeral-keys 1 depressed, and a general operator to run in- U to the totalizer a number when comnletely'indexed, a manually-operable member, means rendered efiective by said memher in insure printing of the correct total, and subtracting-setting means controlled by said member, so that, while typing the total,

the complement thereof will be indexed,

and, upon actuation of the general operator, thetotalizer will be cleared.

9; In combination, typewriting mechanis'm including numeral-keys, computing.

mechanism including a totalizer and actuating means therefor, com rising denominaand means whereby, upon completion of the printing of the total, the manually-operable tional devices in which 'gits are indexed, one by; one, 1n accordance w1th-numeral-keys depressed, and a general operator to run into the totalizer a number when com pletely indexed,'-a manually-operable member, means rendered efiective by said mem-" her to insure printing. of the correct total,

member will be returned to normal position.

10. In combination, tvpewriting mechanism including numeral-keys, numeral-key-.

, 3 controlled computin mechanism compris ing a tptalizer, preliminary representation mechanism: including denomination-selecte troll ing mechanismand a general operator, a

' motor-circuit, two I circuit clo'sels arranged 'in 'parallel, a total-'prmtmg device comv numeral-key-selecting means conby-said totali'zer and numeral-keyoperating means controllable by the denomi nation-selecting mechanism and said motor, but normally disconnected therefrom, a. manually-operablemember, means rendered effective bysaid -member to close said circuitat one of the circuit-closers and to con- 'nect said total-printing device with said denomination-selecting mechamsm, means whereby, upon completion of total-printing,

said circuit will be closed at the second circuit-closer and connection efiected between said motor and s'aid general operator, and

nism including a carriage and numeral-keys, I

numeral-key-controlled computing mechanism including a totalizer having numberwheel's, automatic'total-printing means comprising numeral-key selectors controlled by said numberwheels and normally ineffective denomination selecting mechanism control- ,lable by said carriage, subtraction-setting means for said computing. mechanism, a manually-operable member, and means whereby actuation of said-member will render said denomination selecting mechanism effective on said total-printing means and will actuate saidsubtraction-setting means.

'12; In a combined typewriting and-.com puting mechanism in which numbers are indexed, digit'bydigit, and then computed, a

traveling-carriage to determine computing .zones, numeral-keys, denomination-selecting means controlled by said carriage, indexing mechanism settable in accordance with the numeral-keys depressed, a totalizerf including number-wheels, a general operator 'to run an indexed number. into the 'totaliaer,

motormechanislm'and means whereby the machine maybe concomitantly setfor subtraction and. ror total-printing whereby,

-upon,m o vement of the carriage into a computing zone, the motor mechanismwill automatically print the total, index the com- J 13. combination, typewriting mocha: msm including a set of'numeral-types and a letter-feeding carriage, computing mecha plement thereof and then clear the totalizerr controlled in accordance with the numoral-types actuated and including a setof.

dials, power-driven means under the control of the carriage for effecting operation of -sa1d types and computing mechanism, means under the control of said-dials to select the typesto be operated, subtraction-setting '-mecha nism,-and' means for concomitantly throwing into operation said subtractionsetting mechanism and said power-driven means to cause the number typed by said powendriven' means -to"'be subtracted to clear the dials] 14. In combination, typewriting mecha-.

nism including numeral-keys, computing mechanism including a totalizer and actuatmeans therefor, comprising denominational-devices in :which digits are indexed, one by one, in accordance" with numeralkeys depressed, and a general operator to ice run into the totalizer a number when com pletely indexed, a manually-operable member, total-printing means made effective by said member to actuate said numeral-keys in accordance with the reading of the totalizer, and means whereby operation of the general operator will return said member to its normal position and thereby render said totalprinting means ineffective.

15. In combination, typewriting mechanism including numeral-keys, numeral-keycontrolled computing mechanism comprising a totalizer, preliminary representation mechanism including denomination-selecting mechanism, subtraction-setting mechanism efl'ective on said preliminary representation mechanism, and a general operator, a motor, a motor-circuit, two circuit-closers arranged in parallel, a total-printing device comprising numeral-key-selecting means controlled by said totalizer and numeral-key-operating means controllable by the denomination-selecting mechanism and said motor, but normally disconnected therefrom, a. manually operable member, means rendered eflective by said member to close the circuit at one of said circuit-closers, to connect said totalprinting device with said denomination-selecting mechanism and to actuate said subtraction-setting mechanism, means whereby, upon completion of total-printing, said circuit will be closed at the second circuit-closer and connection eflected between said motor and said general operator, and means whereby said general operator will act to open the circuit at the first-mentioned circuit-closer and 'to disconnect the numeralkey-operating means from said denomination-selecting mechanism, said circuit being broken at the second-mentioned circuitcloser and the connection between the motor and the general operator broken when the general operator completes its movement,

16. In combination, typewriting mecha-' nism including a carriage and numeral-keys, numeral-key-controlled computing mechanism including a totalizeryhavlng numberwheels, automatic total-printing means com prising numeral-key selectors controlled by thenumber-wheels and normally ineffective denominatio -selecting mechanism controlled byv said carriage for operating'the selected 'keys, subtraction-setting means for said computing'mechanism rendered 'efi'ective by said total-printing means, a manu-v ally-operable member, and means whereby actuation of said member will render the denomination-selecting mechanism efl'ective and thereby render said subtraction-setting means effective. I

17. In combination, t writing .mech- 'anism including numeralys,m1meral-keycontrolled computing mechanism compris-' ing a totalizer, preliminary representation 3 mechanism including denomination-selectshown on the dials,

by said member vfor typing,

a totalsshown on the dials and subsequently ing mechanism and a general operator, a motor, a motor-circuit, two circuit-closers arranged in parallel, a total-printing device comprising numeral-key-selecting means controlled by said totalizer and numeralkey-operating means controllable by the denomination-sclecting mechanism and said motor, but normally disconnected therefrom, a manually-operable member, means rendered effective by said member to close said circuit at one of the circuit-closers and to connect the total-printing device with said denomination-selecting mechanism, means whereby, upon completion of total printing, said. circuit will be closed at the second circuit closer and connection effected between said motor and said generaloperator, and means whereby the general operator will open the first-mentioned circuit-closer 'in its forward movement.

18. In combination, typewriting mechanism including numeral-keys, nu'meral-key-' controlled computing mechanism including a series of denominational dials, a control member, and power-driven means settable by said member for typing, a total shown on the clearing the dials.

19. In combination, typewriting mechanism including numeral-keys, numeral-keycontrolled computing mechanism including a series of member, and power-driven means settable by said member for typing, digit by digit, a total subsequently clearing the dials, and restoring saidmember to normal position. 20. In. combination, typewriting mechanism including numeral-keys, numeral-key controlled computing mechanism including a series of denominational dials, a control member, and power-driven means settable digit-b digit,

subtracting said total to clear the dials.

21. .In combination, typewriting mechanism including numeral-keys, numeral-keycontrolled computing mechanism including a series of denominational dials, a control member, and: power-driven means settable by said member for typingfdigit by digit, a

total shown on the dials, subsequently subdigit by digit, dials and subsequently denominational dials, a control tracting said total to clear the dials, and

restoring said member to normal position.

22. In combination, typewriting mechanism including numeral-keys, numeral-keycontrolled computing mechanism including a series of denominational dials, and means for automatically typing, digit'by digit, a total shown on the dials, and subsequently clearing the dials. v

23.- In' combination, typewriting mechanism including numeral-keys and a traveling carriage, computing means settable to subtraction and comprising numeral-keyi ll Uri controlled means for determiningthe digits to be computed and carriage-controlled dc nomination-selecting means including arms actuable seriatim, automatic total-printing means including links actuable seriatimv by said arms to determine the denominations in which digits are to be printed, means for shifting said links into and out of the path of said arms, and means, actuable by said shifting means placing said links in the paths of said arms, to set the machine for subtraction;

24. In combination, typewriting mecha- I nism including numeral-keys, computing mechanism operated thereby including a series of denominational dials, and registerclearing mechanism comprising a clearing key, and means under the control of the I dials and set into 0 eration by the clearing key. to restore all 0 the dials to 0,

25. In combination, typewriting' mecha nism including. numeral-keys, computing mechanism operated thereby-including a series' of denominational dials, a 'registerclearing key, and mechanism set into operation by the register-clearing key and con.-

trolledby the operator solely through ,actuation of said key to return all the dials to

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