US1237513A - Combined type-writing and computing machine. - Google Patents

Description

F. A. HART.

COMBINED TYPE WRITING AND COMPUTING MACHINE.

APPLICATION flLED JULY l1. 9H.

Patented Aug. 21, 1917.

2 SNHITS-SHEET 1.

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ATTORNE mvcnron:

F. A. HART.

comemzo TYPE wmrma AND commune MACHINE.

. APPLICATION FILED JULY I]. I9! I.

Patented Aug. 21, 1917.

2 SHEETSr-SHEEI 2.

UNITED STATES PATENT OFFICE.

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m 01 o fs t Patented Aug. 21, 1917.

Appllca'tlon Med- J n19! 1 1811". Serial 110.6689.

To all whom it may concern:

Be it known that I.,.I u1wsmo1t Ham, a citizen of the United States residing in J enscy City, in the county of Iiudson end-State of New Jersey, have invented certain. new and useful. Improvements in Combined T pe-lVriting and Computing. of \v 1.011 the following is a-specifieaition. E

This invention relates tie-computing ma chines, and is herein. illustrated as applied toone of the Underwood-Hansontype illustrated in my pending application No. 466,836, filed. December 10,1908, and in. the British Patent- No. 3,39Qot 191.2, in which the keys of the typewriter control thc-.setting of certain pins, and the pins-aftemvaad cooperate with the general operator to turn the adding wheelsr I ()ne of the PPlIIClPHIIQbjOG-SS- of my ill-Mk tion is to provide simplified and; meansread-i-ly a plicable- .to existing ma chines, for ,uar ing against. errorswhich arise from t e liability of theoperetive to forget to attend to the operation of the general operator after said pins have'been set for a number.-

My invention is particularly adapted for use in, computing machines of: the type wherein numbers are recorded in: an. item register or another temporary recording device and later are carried into a total-register or permanent recording device. In such machines the numbers are usuallyiuto thc'tota-l register as soon as a. line oii digitshas been completely recorded inthe item register. It sometimes happensothat the operative forgets to' carry the number from the item register to the total register, and thus it sometimes happens that two'- sets ofi digitsare reeordedcin the itemregister and theresult will be utterly confused whenearried into the total register.

According to the present invention means are provided for aui-tomatieally notifying the operatire when it is time tothus transfer numbers from the item. register, and this is preferably done by making. it awkward or impossible to operate the numeral-keys after the last digit of a number is written,'.this digit being. usually the-one im the unitsplace. .akecording to the preferred form of the present improvements, a shield. or inter-fer in device, or other signal moves to a poshtion to rwerlie the numeral keys, whenever any numeral key has been 0 rated to set the unit skin in any columm isher interfereswi, the operation of the keys, or at least warns the operative not to the keys and set uphowpins the co ins wheels have perated to register the number that was previously set up on seirl,pi;ns. Saidbar is connected to said generaloperator who restoredthereby toits non-nah inefiectivc; position back. of the numeral keys. ,When the machine is properly, opera-ted this-bar moves automatically into endout of. efieetive position at such times asnottoainfierfene with the operation ofithe keys, except to prevent the operative-fromforgettingtoattend tothe actuation- .of the general operator. 1

I preferably provide means normally. under. 't'ensionfor movi-n seidEber from normal'. idflepositionhto e eetiveposition; but said. .meanst-arew normally restrainedv by a latch; and- I rovide' means oontroll'erLbyw the carriage of e typewriter? for. releasing; said latch when the carriage is. in position. for writing: the-units di 'tofagnumber'. Uponopera'ti-ng. the genera. ioperator, the parts are restored to normalpositions;

I also-preferably provide-.11 shutter for the dial wheels, which 15 arranged to cover the writing line on said dial-wheels at-thes'ame timethatth'e numeral keys are covered, by the interceptor bar; This shutter is useful for many. purposes, and-particularly to prevent the operative from writingtthe wrong amount in. the -totaleol-umn-v at the right h'e-ndside of the worksheet.

Other features anrh advantages will alsohereinafter appear.

In the accompanying drawings.

I Figure 1. is a sectional side elevation of an- UnderwcocLHnnsoncombined typewritingandadding: machine,- showing. the present improvements applied thereto'; the new parts being inefiectivepositions teg'uaird' against the operation ef the numeral keys, andto prevent the numbers onthe dial wheels from being: read.

Fig-. 2. is: a plan viewof the jack mochanism bywhic the paper carriage selects thedenominationsof the pins which-are-set by the keys.

Fig. 3 is a, perspective rear view oi the present improvements in normalineffective positions.

Fig. 4 is a plan of a set of jacks, with a supernumerary jack made thin and close to the last jack in said set, for reasons which will hereinafter be explained.

Fig.5 is-a perspective view of a button for silencing the intercepter bar and the dial wheel shutter.

Fig. 6 is a part sectional front elevation illustrating the'position of the jack-operating dog after it has operated the special jack seen at the bottom of Fig. 4.

Fig. 7 illustrates the special jack as being operated by the dog.

Numeral keys 1 and letter keys 2 depress the usual levers 3 pivoted at the rear of the machine to operate through the usual bell cranks 4, to throw the usual type bars 5 upwardl and rearwardly to strike upon the front si e of a platen 6, which is mounted to travel upon a letter-feeding carriage 7, which is driven in the usual manner y a spring 8, and is controlled by'letter-feeding devices connecting with a universal bar 9 actuated by heels 10 on the type-bars, and forming part of a' frame 11 which has vibrating supports 12 and actuates the usual letter-feeding dogs 12, to control escapement wheel 12",

Upon said carriage is a tappet or dog 13, which is' usually adjustable along the rack bar 14, and has a cam edge to lift, in succession, jacks 15 arranged in a row mounted upon a fulcrum 16. The rear ends 17 of the jacks press down links 18 to vibrate levers 19, which are connected to linkages 20 to lift the rear ends of a series of bars 21, .whose forward ends carr racks 22 to mesh with pinions 23 provid ed upon dial wheels 24, whereby the latter may be rotated.

The numeral keys 1 have stems 25 to operate arms 26 upon linkages 27 to depress any of a set of pins 28 upon the elevated rack bar. As the carriage 7 feeds step-bystep, the rack bars 21 are elevated in succession, and downwardly from each one is projected a pin 28. The rack bars fall to normal positions, 'thus bringing the depressed pins into the path of a cross bar 29 formin part of a eneral operator. The general operator, w ich also comprises a pair of arms 30 and a pair of racks 31'on opposite sides of themachine, is connected by pinions 32 and segments 33 to a shaft 34 which carries the operating handle 35. After the pins are set up by the numeral keys 1, the operative grasps the handle 35 and the general operator is slid forwardly, the bar 29 engaging all of the depressed pins and driving forward the racks 22 corresponding distances, to turn the dial wheels 24 accordingly.

Upon striking a key 1 to print a digit in the units place in the column, and then releasing said key, the carriage 7 advances ing of a digit in' the units place,

one step, and the tappct 13 engages the nose 62 of a special jack 36 placed at the end of the row of jacks and havin a link 37 to engage arm 38 upon a rock s; aft 39 to rock the latter; said shaft carrying an upstanding arm 40 to which is pivoted the rear end of a latch 41, whereby said latch is withdrawn rcarwardly from a tooth or shoulder 42 formed on an arm 43, which extends rearwardly from a rock shaft 44, said arm being then driven up by a spring 45", which is connected to a lever 46 having at one end a fork 47 to enga e a pin 48 in said arm 43. This movement 0 the arm 43 and rock shaft 44 swings forwardly the bar 45 from the dotted line position to the full line position at Fig. 1; said bar being carried upon a pair of uprights 49 risin at the sides of the keyboard from said sha t 44. In the position to which the bar 45 is thus shifted, it overlies the numeral keys 1, and serves to warn the operative not to operate said keys until after the general operator has been operated. The bar interferes with the operation of these keys and therefore silences them, that is, stops the usual operation or activity'of the keys.

The movement of the general operator returns the bar 45 to normal and idle position back of'the keys. 7 This is effected by a bell crank 50 pivoted'upon the machine frame and having an arm 51 to -be engaged by a shoulder 52 upon a rack 31 of the general operator. The rack 31, in its forward movement, lifts the arm 51 of said bell crank, and the latter engages an arm 52 on the lever 46. and vibrates the same, causing the fork 47 thereon to depress the arm 43 and swing back the uprights 49, together with the bar 45. The nose of the latch 41 catches over the shoulder 42 on the arm 43, and thereby holds the bar 45 in idle position; a spring 53 coiled around the rock shaft 39 serving to throw the latch 41 forwardly for this purpose. It will be noted that said latch is slotted between its ends to rest upon a guide pin 54.

At Fig. 2 the 'ack 36 is of equal size with the other jacks, ut at Fig. 4 the nose 62 of the jack 36 is made very thin. The tappet 13 is in such form that the jack 36 will be operated (Fig. 7 and released (Fig. 6) by t e time the paper carriage 7 completes its first letter-feeding movement after the printthat is the letter-feeding movement which occurs as the units type bar returns to normal position. Hence the latch 41, after releasing the bar-throwing arm 43 is caused by the spring 53 to tend to reset said arm 43, so that when the latter is pulled down by the bell-crank 46, the latch snaps into place to hold the bar 45 back in normal position. The arm 52 of said bell crank normally occupies an elevated position as at Fig. 3, to

permit reciprocation of the eneral operator 31, etc, at any time, wit out obstruction from said bell crank.

After reciprocating the handle 35, and thereby throwing the bar 45 back to idle position, the operative may manipulate the keys 1 to setup pins for the next number, and upon the writing of a digit in the next units place the latch 41 will again be withdrawn, and the cycle of operations will be repeated. Thus, by simple means, readily applied to the machine, errors arising from failure to manipulate the handle 35 may be avoided.

By turning abutton 63, the special'jack 36 can be moved to a position to silence or disable the mechanism for shifting the interponent bar. This button is mounted upon the outer end of a stub shaft whichis eccentric to the-shaft 16 that carries the jacks 15; and on the inner portion of said shaft 64 is, a stud 65 which normally is concentric with the shaft 16, and which, by rotation of the button 63 through a half revolution, is lifted above the shaft 16, so that the nose 62 of the special jack 36 is raisedtoohigh-to be engaged by, the tappet 13. It will be seen at Fig. 4:, that stud 65 abuts against the-end of the shaft 16, which is suitably supported-in a bracket or casing 66 independently'of said stud 65. To hold the stub shaft 64 Whereadjusted, a spring 67 presses a ball 68 into a seat 69, Figs. 4 and 5, formed in the stub shaft, said spring being held down by a screw '(0, Fig. 5. The stub shaft may have depressions on its opposite sides, and these depressions may be connected bya shallow peripheral groove 71. This disabling of the interponent bar enables the operative to actuate the numeral keys at any desired time.

The interponent bar 45 can be moved to ineffective position by the operative at any time, this being so because it is only held in effective position by the spring 45. The bar 45 is, therefore, manually movable to ineffective position, and if pushed back far enough is locked in ineffective position by the latch 42. This connection is useful outside the adding zone, because it permits a numeral key to be then actuated by the operative, if desired, without first actuating the general operator. At such times, of course, there is no possibility of setting up numbers on the pins 28, and, therefore, no errors will be lnade in the computation.

In order to avoid the liability of error, in.

writing the proper total at the end of each line of writing, I provide a shutter 72 for the dial wheels 24. This shutter is carried upon the ends of arms 73, which are pivoted upon the arbor 74:, which carries the dial wheels; and the link 75 is connected to one of said arms 73, and extends rearward-1y to an arm 76 pendent from said rock shaft 4+4, so that when the bar 45-is thrown forwardly over the keys, the shutter 72 drops behind the sight-opening 77 over the dialwheels, so that the number thereon cannot be read, Fig. 1. This avoids the liability of the operator writing in the total column the amount which shows at the sight hole, after the last number has been written and before the general operator is operated-to carry said last number into the addingwheels. The shutter 72 will also be useful for other pur- )oses. It will'be understood that the shutter 12 may be thrown out of use by the button 63 in the manner already described.

Variations may be resorted to withinthe scope of the invention, and portions of the im rovements may be used without others.

of a: device norm-a l'y in-idle position, but

tendin to directly interfere with the opera tion 0 said numeral keys, means controlled from said carriage for rendering said device efiective to interfere with said numeral keys, and means dependent upon the operation of the general operator for releasing said keys from=the effect of said interfering means. i

2. In a combined typewriting and computing machine, the combinatlon with a typewritencarriage, type-operating keys, including numeral keys controlling said carriage, computingdevices, and connections from said numeral keys to control said computing devices; of a evice normally in idle position, but normally tending to interfere directlyrwith the operation of said numeral keys, a. latch restraining said device, and means dependent upon the movement of said carriage for releasing said latch.

3. In a combined typewriting and computing machine, the combination with a carriage and numeral keys having means to control the same, of computing mechanism including a general operator and also including computing wheels or devices and a row of jacks, one for each wheel, a j ack-setting device dependent upon the movement of the carriage, a special jack following the units jack in said row. a shield or device normally occupying a position away from said keys and tending to move to a position overlying said keys, a latch normally restrainin said overlying dei ice, and means connected to said special jack for releasing saidlatch-.-

aving' thus described my invention,

the computing devices;

4. In a oombinedtypewriting and com puting machine, the combination with a carriage and numeral keys having meansto control the same, of computing mechan sm including a general operator and also including computing wheels or devices and a row of jacks, one for each wheel, a. jack-setting devicev dependent upon the movement of the carriage, a special jack following the umts jack in said row, a shield or bar normally occup a position away from said keys and tending to move to a position overlying said keys, a latch normally restraining sa d overlying device, means connected to said special ack for releasino said latch, and means controlled by said general operator for returning said overlying device to normal position.

5. In acombined typewriting and computing machine the combination with a typewriter carriage, type'operatmg keys, including numeral keys c0ntr0ll1ng sa1d carriage, computing devices, connections from said. numeral keys for determining the extent of operation of the computing devices, and an operator for movin the computing devices as determined by said numeral keys; of a device normally in idle position, but normally tending to interfere directly with the operation of said numeral keys, a latch restraining said device, means dependent upon the movement of 'said carriage for re leasing said latch, and means controlled by said operatonfor returning said device to normal position.

6. In a combined twpewriting and computing machine, the combination with a typewriter carriage, type-operating keys, 1ncluding numeral keys controlling said ear: riage, computing devices including denominational-determining members associated with said carriage, connections from said numeral keys to control said denominational members and for determining the extent of operation of the computing devices, and an operator for moving the computing devices; of a device normally out of effective position, means dependent upon the movement of said carriage to move said device to a position to directly obstruct operation of the numeral keys, said movin means in cluding a part shiftable at wil to disable the same, and means dependent upon the operation of the general operator for releasing said keys from said obstructing device.

7. In a combined typewriting and computing machine, the combination with a carriage. and numeral keys having means to control the same, of computing mechanism including a general operator and also including computing wheels or devices and a row of jacks, one for each wheel, a jack-setting device dependent upon the movement of the carriage, a special jack following the units jack in said row, a shield or bar nor- .extent of operation of the to swing said arms and n digit in the units mally occupying a position away from said keys and tending to move to a osition overlying said keys, a latch norma y restraining said overlying shield, means connected .to said special ack for rel'ea said latch, and means to set said special pick to ineffective position and hold it there.

8. The combination with a letter-feeding carriage, numeral keys having means to control the same, and a computing mechanism controlled by said keys, of a general operator for said computing mechanism, a shield or bar to overlie said keys, said shield normally withdrawn from the keys, means dependent upon a movement of said carriage immediately ensuing upon the operation of a key in the units place in a col for causing said shield to move to-a position overlying said keys, means dependent upon the operation of the general operator for restoring said shield to normal position, and means adjustable at will to silence said shield-moving means.

9. In a typewriting andcomputing machine, the combination with a ty writer carriage, type-operating keys inclu nu meral keys, 'a letter-feeding mechanism for said carriage operable by said keys, computing devices associated with said carriage, means set by said keys for determining the extent of operation of the com 'uting devices and an operator for moving t e computing devices, of a. pair of arms, a shield or bar carried by said arms and normally adjacent to the numeral keys, a spring tending to swing said arins and bar to cause the latter to cover the numeral; keys, a latch restraining said bar, and a latch releaser movable by a part upon said typewriter carriage.

10. In a typewriting and computing machine, the combination with a typewriter carriage, type-operating keys including nu moral keys, a letter-feeding mechanism for said carriage operable by said keys, computing devices associated with said carriage, means set by said keys for determining the I computing de- \'1C6S,':1I1d an operator for moving the computing devices, of a pair of arms, a shield or bar carried by said arms and normally adjacent to the numeral keys, a spring tending latter to cover the numeral keys, a latch restraining said bar, and a, latch releaser movable by a part upon said typewriter carriage; said arms mounted upon a rock shaft, and another arm extending from said rock shaft, and having a shoulder to be engaged by said latch, and a spring tending to move said latch to effective posltion.

11. The combination with computing keys, a set of computing wheels, and a shutt-er for said Wheels, of means dependent upon the operation of a key to compute a place in a column for causbar to cause the ing said shutter to cover the' reading line on said wheels, a key-operation obstructing device made effective by the some means, and means operable from a single point for rendering ineffective both said shutter and said key-obstructing device at will.

12. In a -eombined typewriting and computing machine, the combination with an item register and keys for writing and registering numbers in said register, of a total register, means obstructing said keys, a

spring normally tending :to move said obstructmg means to obstructing position, a latch restraining Isaid obstructing means, said. latch arranged to be released by the writing of-a digit'in the unitscoluinn, and means for carrying anumber'registered in said item register into saidtotal register, said means arranged to move said obstructing means against the tension of said spring to free said keys and to reset said latch.

13. The combination with a set of numeral keys,-of a spring normally tending-to interfere with the proper use of said keys, a carriage under the control of saidkeys, a carriage-controlled latch to restrain -said key-blocking means, and means for making said latch control effective or ineffective;

14. The combination withua carriage, of computing wheels forming indicating devices numeral keys, a shutter called into action'by the-movement of-the carriage at the units position for preventing the operator from copying off the indicated number, and meansfor blocking said keys connected to said shutter.

15. The combination of numeral keys, a carriage, a carriage-controlled guard movable to osition above the keys, a shutter connected to said guard for obscuring the computed number, and a general operator having means to return the guard and shutter.

16. The combination with numeral keys, denomination devices and a carriage to operate them successively, of a supernumerary denomination device, means connected thereto to interfere with further operation of the keys, and to obscure the computed number, a general 0 erator, and means connected to said genera operator to restore the interfering and obscuring means to normal positions.

17. In a computing machine, the combination with numeral keys, a traveling carriage and computing wheels on which said keys are effective in a manner determined by said carriage, of means for visibly warning the operative when not to use said keys, a general operator for actuating said wheels, a bar forming part of said operator, said bar having anotch, and means operated by a side of said notch for making said warning means ineffective.

18. In a computing machine, the combination with numeral keys and a general operator, of a bar adapted to be swung above said keys, and a rock shaft on which it is carried, said general operator having a notched member for controlling said bar.

19. The combination with keys and a dc. vice for interfering with their operation, of a spring normally tending to make saiddcvice effective, a traveling carriage,- a dog on said carriage to make said spring effective, computing wheels, a general operator for said computing wheels, and a. cam forming part of said operator for making the device ineffective.

20. Thecombination with computing wheels and numeral keys, of a device-for interfering with the operation of saidkeys, aspring normally tending to make said device effective, a general. operator for said wheels, ,a reciprocating bar forming part of said operator, an arm moved by said operator and means moved by said arm to make said device ineffective.

21. The combination with computing wheels and numeral keys, of a device for interfering with the operation of said keys, a. spring normally tending to make said device effective, a general operator for said wheels, a reciprocating 'bar forming part of said operator, an arm moved by said operator, means moved by said arm to make said device ineffective, and a. catch normally holding sald device ineffective.

22. The combination with computing wheels and numeral keys, of a device for interfering with the operation of said ke s, a spring normally tending to make said cvice effective, a general operator for said wheels, a reciprocating bar forming wart of said operator, an arm moved by sai operator, means moved by said arm to make said device ineffective, a catch normally holding said device ineffective, a traveling carriage, and a do on said carriage for making said catch inehective.

23. The combination with computing wheels and numeral keys, of a device for interfering with the operation of said keys, a spring normally tending to make said device ineffective, a general operator for said wheels, a reciprocating bar forming part of said operator, an arm moved by said operator, means moved by said arm to make said device ineffective, a catch normally holding said device ineffective, a traveling carriage, a dog on said carriage for making said catch ineffective, and means for making said dog ineffective at will.

24. The combination with numeral keys, of a letter-feeding carriage controlled by said keys, a computing mechanism, said carriage movable into and out of a computing zone at each run of the carriage, normallyineffective means for obstructing said numeral keys and adapted to conspicuously and visibly Warn the operative that a computation is not complete, a spring normally tending to move said numeral-key-obstructing means to effective position, a latch normally detaining said obstructing means, and means dependent upon the operation of a key in the units place in a column for making said latch inefl'ective.

25. The combination with. numeral keys, of a letter-feeding oarria e controlled by said keys, a computing mec anism, said carriage movable into and out of a computing zone at each run of the carriage, normallyineffective means for obstructing said numeral ke s and adapted to conspicuously and visibl y warn the operative that a computation is not complete, means dependent upon the operation of a key in the units place in a column for movin said numeralkey-obstructing means to e ective position, and means for detaining said obstructing means at its effective position.

26. The combination with a denomination selector, computing keys, a set of computing wheels, a general operator, and a shutter for said wheels, of a traveling carriage, means to cooperate with the carriage at the computation of a digit in the units place in a column, for operating said shutter to cause it to cover the reading line on said wheels,

Copies of this patent may be obtained for means made effective by the same means, for interfering with the ordinary use of said keys, and means controlledbly; the general operator for restoring saidf s utter-operating means and said interfering means.

27. In a combined typewriting and computing machine, the combination with an item register and keys for writing and for registering a number in said item register, of a total register, keys writing but not registerintg, means including a general 0 erator, or carrying a number registere in said item register into said total register, a shutter for said total register, a silencing device for said writing and registering keys, a single device for causing said silencing device to be efi'ective and said shutter also to overlie said total re ister during the carrying of the number into said total register,

means (including a denomination'selecting member) acting upon the completion of the registering of a number in said item register for causing said sin 1e device to act, and means controlled by t e general operator for restoring said silencing device and said shutter.

FREDERICK A. HART. Witnesses:

PAUL ZIRON, K. FRANKFORT.

five cents each, by addressing the "Commissioner of Patents. Washington, D. G.

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