US1370475A - Combined typewriting and computing- machine - Google Patents

Description

c'. E. NORIN.

` COMBINED TYPWRITING AND COMPUTING MACHINE.

APPLICATION FILED JULY 10,' 1919.

.0. E. Nom. COMBINED TYPEWRITING AND COMPUTING MACHINE.

APPLICATION FILED JULY 10| 1919.

Patented Mar. l1, 1921.

2 SHEETS-SHEET 2.

UNITED STAT ovules.

MACHINE COMPANY, F NEW A CQRPRATION F NEW' YORK.

COMBINED TYPEWRITIN ANI) COMPUTING MACHINE.

To @ZZ r11/7mm. t may concern:

Be it ,known that I, CARL E. Nonilv, a citisouci the United States, residing in Hartford, in the county o lD artford and State of Uonnecticut, have invented certain new and useful Improvements in Combined ypewriting and Computing Machines, of which the following is a specification.

This invention relates to computing ma chines, and is herein shown as applied to an Underwood standard bookkeeping machine, one form of which is disclosed in the patent to Hart, No. 1,296,953, dated March il, i919, in which the machine is provided with an electric motor for carrying into the computing wheels digits set up by the numoral keys, and in which the carriage trips oli the motor at the writing of the last digit of a number.

According to the present invention, the machine may be provided with a shutter or with a device for interfering with the operation of the keys, or with both. These may be normally ineliective, but 'may be tripped oli by the same device Vwhich serves to trip ofi the motor, this device being shown in the Hart patent as a tabulating column-stop. Such shutters and key-interfering devices have usually been operated by a special dog, or else did not come into operation until the general operator which carries the digits into the wheels had already started to move. The present invention, therefore, provides that the Wheels may be hidden and the keys may be obstructed at the time the motor should be operated, with the result that any ailure on the part of the motor to start will make itself immediately manifest to the typist.

Other features and advantages will here inafter appear.v

In the accompanying drawings,

Figure l is a sectional side view of an Underwood standard bookkeeping machine, .largely diagrammatic. and showing the present invention as applied thereto.

v Fig. 2 is a fragmentary perspective, illus trating some of the motor-starting connections.

Fig. 3 is a skeleton perspectivdshowing the relationship of many of the principal parts of the machine which are related to lhs present invention, v

Fig. fl. is a. fragmentary perspective view Specification of Letters Patent. Application led Iuly 10, 1919. Serial No.

vup by depressing Patented Mar. 1, 1921.

of a modiled form of the releasing the shutter or keyinterfering device.

In the usual Underwood standard bookkeeping machine, numeral keys l and al phabet keys l1 depress key-levers l2 to cause bell cranks or subelevers 13 to swing typebars 14 upwardly and rearwardly, so that types l thereon print against a platen 16 which is journaled in a carriage 17. The carriage is normally spring barrel 18, tending to draw it in letter-feeding direction' along its rails 19 and 20, but it is held by the usual escapement loose dog 21, which is adapted to be actuated whenever a type-bar 14 approaches the platen. To eiiiect this, each type-bar is provided with aheel 23, which, as it approaches the platen, strikes a universal bar 24 and swings it rearwardly, thereby making the usual solid dog 22 eiiiective on the usual escapement wheel 25. On the return stroke of the key, the universal bar 24 springs orwardly and allows the dog 2l to rengage the escapement wheel 25, to permit the carriage to feed forward one Ietterspace. The escapement wheel 25 is connected to the usual pinion 2G by the usual pawls (not shown), and the pinion meshes with the usual pivoted rack-bar 27 connected to the typewriter carriage. In order to rapidly position the carriage at any desired point, there are provided the usual decimal-tabulating keys 28, which, in the usual manner, are adapted to release the carriage by lifting the rack-bar 27 through connections (not shown herein), so that it is drawn along until a column-stop 29 upon the carriage arrests the carriage by striking a counter-stop 30, connected in the usual way to its key 28. The column-stops may be of various forms, as well as that shown at 29, which will be described more fully herein, and are settable upon the usual rack-bar 3l.

In order to enable computations to be efmachine is provided with the 32 upon pinbars 33, which have racks at their forward ends adapted to turn the usual computing wheels 34 by pinions 35 connected with said wheels. The digits written by the numeral keys l0 in a computing zone are adapted to be set usual settable pins way. To prevent setting upof the pins connections for` under tension of athe pins 32 in the usual 'carryover mechanism 32 et the Wrong time, the pins are normally out o alinernent with pin-setting; bers 36, but are adapted to be shifted orn'arflly slightly by the setting orvvsrclly o their respective pin-bars 33 eeriati'm by the usual denomination-selecting clog 37 upon the cnrriuge. The connections Jlor doing this setting forward include pivot-ed jacks 88 wnic i ere swung up, one et e time, by the selector 37, with the result that any incl( when so swung carries clown its rear end to depress the usual rod or wire 39, to rock the usuel bell-crenklever 40, which is effective through the tronsposing mechanism el, to set forwardly the irl-bar connected to the jaclr 38, which is e ective et the moment, so that the pins 32 thereon will be in elinernent with the pin-setting bars 36. The lrey 10, depressed et this moment, sets the pin correspending to it on the pin-ber 33, by actuating its own pin-setting-bar 36, the `key-lever 12 for this purpose being, proviclecl with e pendant 42, which, as it descends, strikes a Wrist 43 upon e rock-shaft 14, which is normolly connected to its ovm linkage or pinsetting ber 36. The connections are such that Whenever e lrey 10 is depressed, its li 2:- age 36 descends and sets the pin 2 which is then below it.

After the (igits representing e.. number have been set up by the setting or' pins 32 upon the pin-bars 33, the riigits ere cerrie into the computing Wheels 34 by Ineens of u general operator 45, which has e cross-har 46 just below the pin-bars 33, with the re sult that it strikes any depressed pins, :intl carries forward the pin-bers to en extent depending upon the pins depressed, so that the numeral Wheels 311- nre turned to e corresponding extent. At the return stroke of the general operator, the cross-bnr i6 strilres lugs 4;7 upon the pin-bers emi carries the pin-bers beck substantially to their normal position, so that they muy be properly held by detente Ei8 out of vthe wey in the nei-:t pin-settingI operation. The pins ere restored, ready for such o eration, by nier/ins of e mechanism, not shown herein, but one form of which is describe@ in some detail in Patent No. l,276,812, (lated September l0, 1918. The computing or numeral wheels 34 do not turn on the return stroke of the general operator, beceuse they are provided with the usuel peWl-end-rstchet connections to lthe pinions 35, and are also provided with thc usual detente {not shown), The usuel (not shown) is also provided. is herein cliscloserl, the mechenism also comprises subtraction-setting vice, which includes a subtraction-setting ber 49, which uflspterl to alter the pinsettin connections 'in e, menne-r set forth in seid atent No, 1,276,62. rlhe general operator is herein shown adapted to be sutoinsticelly ectneterl by inet-ins o'l en 2mn L() connected to u motor (not shown) but under the control of an' electric contact clutch 51, which is normally held by e. starting pin Alin some forms et the mechanism, the storting pin 52 is moved to ineil'ective position to start the motor by depressing s starting key 53, which overlies fi motor-starting lever 54, connected :it to the starting pin 52.

ecorflin to the present invention, there muy be utilized the motor-starting mechanisrn of the Minton atent, No. 1,280,065, which includes a lever 56, pivotecl intermediate its ends :it 57, and comprising a one way dog 56 which is adapted: to be struck by e mouw-starting projection 59 upon a column-stop, the connections bein such that the dog 58 lifts the pin 52 when t e stop 29 strikes it while traveling in lettenfeeding direction. rEhe connections between the dog 58 and the starting pin 52 inclue n drawlinlr 60, pivoted to the opposite end of the lever 56, and pivotslly connected at its lower end to n bail 6l, to which is fest a rock-arm This roch-erm 62 has pivot-ed to it a restrainingn erin 63, which normally overlies e spring-tensioned lever 64, in such a wey as to prevent the actuation of the lever 6e by its spring 65. Vhenever the starting dog 56, however, becomes eifective, the restraining arm 63 is withdrawn from the end or" the lever 64, with the result that the spring 65 swings the rear end of the lever upwardly, thus carrying the front end 66 or the lever downwardly, so that it carries rloivn the starting key 53, and thereby starts the motor to ectuete the general operator.

set forth in seid Hert patent, the lever 6e is adapted to be restored to its normal position by the actuation of the general op crater, anal, for this purpose, its end 66 comprises e bent-over urne 67 which overlics s cuni 68, forming extension one side oi the general operator, with the result that sn eiivsnce o the general operator mises the iront end 66 of the lever 64 :intl lowers reer enel, so theo the holding nrnl is snsnperl beck over it, oy-Ineens o its spring The machine, as herein illustrated, corn prises e shutter 70 which is normally ineffective, but which is under the tension of e. spring 7l. which tends to Ineke it elfective, it being, however, restrained by n latch T2. The shutter is adepteri to be motie effect-ive tion of the dog 58, and. to fief ne, the latch 'T2 is shown in the torni oL long ber which has :i limitei'l motion ons iro upon e.. siidepivot "il, nucl which pivoted its rcsr end to e rock-erin fest upon :t cioss-rocirshaft 76. The a 'tuo ion of the dog is adopted to reci; shei't '76, end, for this purpose, there is isst on @site end of saici she-ft u roch-arm "i" overlying the lever 64, with the result that whenever the lever 64 is released by the actuation of the holding arm 623," the latch 72 is drawn back by its spring 79, thereby permitting the spring 71 on the shutter. The connections between the spring 71 and the shutter include a bell crank 80, upon which the spring 71 draws, said bell-crank having a forked arm 81 engaging a pin 82 upon a rock-arm 83, fast upon a shaft 84, said shaft being connected to the shutter by means of a lrock-arm 85, fast to the shaft and joined by a link 86 to one arm 87 of the shutter. To enable the shutter to swing easily and properly to cover up the numbers upon the wheels 234, it is shown as pivoted upon the aXle 88, upon which the Wheels 34 are journaled.

The latch 72 is herein illustrated as not only controlling the shutter, but as also controlling a key-interfering; device.

The key-interfering device is herein shown as comprising a bar 89 which normally rests in the ineffective Fig. 1 position, lyingl behind the numeral keys 10 and just above them. The bar 89 is supported upon standards 90 which are fast upon the shaft 84, their position being such that when the shutter is effective, the bar 89 stands over the numeral keys 10 and obstructs their op eration, While normally both the shutter and the bar 89 are ineffective. To restore the shutter and the interfering bar 89 to their normal positions, there is provided a bell-crank 91, having an arm 92 which normally rests in a notch 93 in the side bar 94 of the general operator. Normally the bellcrank 91 stands clear of the arm 95 of the bell-crank 80, but when the general operator comes forward, the arm 92 rides out of the notch 93 and swings the bell-crank up'- Wardly, thereby causingY Athe forked arm 81 to swing the arm 83 downwardly, thus mov ing' the shutter 70 and the obstructing bar 89 to ineffective position.

In addition to the stop 29, which may serve for adding purposes, there may be provided other stops such as the stop 96 which is ineiiective on the startingl dog 58. The stop 29 may be reversible and be cut away as at 97 so that itmay play the part of a stop 96, if reversed. Certain tabulating stops may be adapted to automatically set the mechanism to subtraction as well as to start the l'eneral operator. For this purpose, the subtraction stops each comprise a body 98, which is like the body of thestop 9.9 and carries an extension 99 which is adapted to strike a one-Way dog 100 upon a subtraction setting lever 101, pivoted at 57, like the lever :76 and which is 102 to the usual subtraction-settingv mechanisnr, one form of which is disclosed in said patent to Hart. The subtraction stop may also comprise a lugbr 103, adapted to strike to become effective "puting Wheels, a drive for connected by a draw linkthe dog 58 to start the motor. Thus a single subtraction stop sets the mechanism to subtraction and starts the motor.

ln Fig. 4 is shown an alternative form of the device, in which the holdin arm 63 is adapted to operate the shaft 6 directly Without depending upon the lever 64. To accomplish this, the holding arm 63 is provided with a bent-ott" arm 105, forming a cam, which is Ydrawn to the right in Fig. 4 and rocks the shaft 76 by carrying the cam arm 105 against a dependentarm 106 fast to the shaft 76, thereby rocking it just as does the arm 77.

Variations may be resorted to Within the scope of the invention, and portions of the improvements 'may be used Without others.

Having thus described my invention, I claim:

1. In a combined typewriting and computing machine, the combination with numeral keys and a traveling carriage, of a device for interfering with the operation of said keys, a computing device comprising members adapted to be set by said keys, comwheels digits set up on said members, a carriage-operated link for starting said drive, and means operated by said link for making said interfering device effective.

2. ln a combined typewriting and computing machine, the combination with numeral keys and a traveling carriage, of a device for interfering with the operation of .said keys, computing,r device comprisingr members adapted to be set by said keys, computing Wheels, a drive for carrying into the Wheels digits set up on said members, a settable dog on said carriage, means operated by said dog for starting said drive, and means operated by said dog for making said interfering device effective.

3. 1n Aa combined typevvriting and computing machine, the combination with numeral keys and a traveling'7 carriage, of a device for interfering with the operation of said keys, a computing device comprising members adapted to be set by said keys, computinp,r Wheels, a drive for carrying into the Wheels digits set up on said members, a settable dog on said carriage adapted to cause said wheelsuto add or subtract, a connection operated by said dog for starting said drive, and means controlled by said connection for making said interfering device effective.

4. In a combined. typewriting and computting machine, the combination with numeral keys and a traveling` carriage, of a devi-ce for interfering` with the operation of said keys, a computing device comprising members adapted to be set by said keys, computingf Wheels, a drive for carrying into the wheels digits set' up on said members, a spring normally tending to make said interfering device effective, a catch for holdcarrying into the

Images