US1668844A - Demonstration device - Google Patents

Description

May 8, 1928. 1,668,844

y F.,A. G REls DEMONSTRATI ON DEVICE Filed May 22 1924 4 Sheets-Sheet 1 6,@

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May 8, 192s. y

F. A, GREls DEMONSTRATI ON DEVICE Filed May 22 1924 4 Sheets-Sheet 2 22228222 555.54 55555 .3333333.33 4444444 a n nn aan n u u w 55 TOTALS Snom 1 hn) ,lu/@ (if elif.

aucune Patented May s, 192s.

UNITED. STATES PATENT e OFFICE.- e

:Banamex .L cams, OFNEW YORK, N." Y., ASSIGNOR `'ro nLmOTT-FIsnnn comuni,

. "A CORPORATION OF DELAWARE.

DEMONSTRTION DEVICE.

. Appncation inea my 22, 1324. serial No. 715,135.

This invention relates to a demonstration device designed to facilitate an explanation of a system `of accounting and a theory `of operation of an accounting machine.

The object of the-invention is to .produce a simple, effective and inexpensive device by means of which, the salesman of a machine, as for instance, a. bookkeeping machine, may read-il `demonstrate to a customer the system o bookkeepingor. accounting for which the machine is intended; the

purpose and character of the records secured bythe operation of the machine as Well as the computations effected by the machine, and

the checks, proofs and other safety features which are incidental to the operation. i

To the accomplishment of `this generalobject and others subordinate thereto, one embodiment of the invention residesV in the construction and arrangement of parts .to

be hereinafter fullydescribed, illustrated in the accompanyingdrawings andidefined in the appended claims. t

In said drawings:

Fig. lis a front elevationof the demonstration device as it appears upon the com-` pletion ofthe entry of a transaction, the blindbeing shown iii-dotted lines in the position it assumes tokdisclosc the normally obscured Or covered sight openings.

Fig. 2 is a view ot' the slide showing the arrangement ofthe data thereon.

Figure 3 is fa transverse section. Figures 4to-12 inclusive, are diagrammatic viewsindicating the data appearing on ,the Work sheets and on the .registers at each step of the demonstration.

Mechanically, `the .device is very simple consisting primarily of a sheath or case il and a slide 2` therein, theslide being Apro.- vided: with a handle 3 to facilitate itsmanipulation. The sheath l may be made of any suitable material, preferably composed `.of frontend `back boards 4 and 5 interposed marginal spacing strips 6, a celluloid orY other `inexpensive transparent cover 7,` and eyelets 8 disposed along the top and side margins of the device and passing through thecover, front and back boards and spacing strips lto unite these severahelements in ya permanent sheath or case with sutiicient space between the `front and back boards thereof and between the side spacingstrips to Venable the guide 2 to be actuatedand guided. i s

ance, Name and Proof .Displayed on the front board of the device are pictorial representations `of an ac-'` counting `,machine 9, and Vthe equipment of computing devicesor registers employed on the machine for the particular class of Work to he demonstrated. The registers illustrated in the present case arethe Old balance register 1l0, the Charge77 registerll, tl1eCredit register l2, the New balance register 13, the Proof register 14 and the Cross footer register 15. i

`In their mechanical embodimentthese registers are provided with sight openings through which the computations thereof are indicated 4or displayed, and the demonstration device is likewise provided with corresponding sight openings 16 in the front board 4 through which data printed on the slide 2 `may be exhibited `in imitation ofthe. actual register indications. Also pictured on the Vfront of the device `are the several Work sheets utilized inthe demonstratedsystem of bookkeeping or accounting. `These sheets are not directly superposed so that a record lmade on one would be transferred" to the others, butare shown in an approxi- 4mate?relation from which their-actual relation' may be readily understood. lIn the presentinstance, these .work Vsheets are .the Monthly statement 17, the Customers ledger 18and the Sales journal 19` shown intheir actual vertical or columnar alignment Ahut oifsetito exhibit the irst Writing line of each sheet.` Along each of theseV Writing lines the front board of the device is formed Vwith sight openings 20, 21 and 2Q oppositel each of the columns through iwhich data may be exhibited from the slide, in imitation `of `the data which would in practice be printedon the sheets,.either directly or by transfer.k These columnsbear the designations Old balance, Number, Date, Description, Charges, Credits, .Bal-

`Usually the proof and name columns are omitted from the monthly statement andthe proof column from the customersledcer also, so that the name appearsonly Aon tlie customerls ledger andljournal. andthe proof appears `on `the journal only. r i.

NOW then, the purpose of the demonstration device is to show progressively, exactly what is indicatedfon Athe several Work sheets and on the registersby the writing of an item in any column; "It is therefore, only sus` bear such indications at that particular step of the actual operation of the machine. For instance, assuming the slide to be drawn out so that no indications thereon would appear at any sight opening, the slide is pushed in until the amount h35, for instance, appears in the Old balance column. This represents the first entry which is known as bringing down the old balance. The number $4.35 is carried for this position of the slide in five different places on the slide so that the amount $4.35 will be displayed in the Old balance column of each worl; sheet and also in the Old balance registers 10 and in the cross footer 15. This is for the reason that in the operation of the machine the mere printing ofthe amount of the old balance in the old balance column of the monthly statement causes the same item to appear by transfer on the customers ledger and sales journal and operates both the old column register and the cross footer to register the same amount. These five indications of the old balance as they occur on the demonstration device will be seen by reference to Figure 4, the sight openings in this diagrammatic view corresponding in lateral, though not vertical, spacing with the sight openings in the front board of the device.

The next operation is the insertion of the number in the number column. The slide is therefore moved up one step and irrimediately the number 2 is displayed in the number column of the three work sheets while the number displayed in the old balance column and in the two registers is the same as before, because in practice the entry of the number is merely additional to what in no way affects the old balance entries land registrations of the preceding operation.

Next, the slide is advanced another step because the next operation is `the entry of the date. January 3 immediately appears in the date columns of the sheets, but the indications advanced into view in the old balance and number columns are still the same and the registers are unchanged as in practice.. The next entry is the description of the merchandise. Once more the slide is moved up and the descriptive matter is shown as if Written in; mdse. being utilized in the device as a generic description. Likewise in this case, the indications advanced to the sight openings at the left are duplications of those displaced, because the entries in the three columns appropriated to number, date and description have no effect on the registers.

We now come to a charge entry and as the charge indication comes into view by the movement of the slide we find that while the amount in the old balance register remains the same, the amount of $2.20 appears in the charge register while the amount in the cross footer has changed to $6.55 which is the sum of the old balance plus the charge. We now have the old balance in the old balance register', the charge in the charge register and the sum of these two amounts indicated in the cross footer. The next entry is the entry of the amount of the new balance, which amount is ascertained by reading the cross footer and is then Written in the .new balance column. In practice, the printing of this amount at this point automatically effects a corresponding adding operation of the new balance register 14. and a corresponding reverse or subtracting operation of the cross footer. ,Therefore the writing in of the new balance, if correctly done, must clear the cross footer to zero and the proper copying of the new balance is thereforel proven by the cross footer which, if cleared is positive assurance that the new balance has been correctly written and that the amount shown on the new balance register is correct.

The next movement of the slide affects nothing except the addition of the name J. Jones on the Sales journal and Customers ledger, all of the indications at the various other sight openings being duplicated by this Vlast movement of the slide.

The next operation is the printing of the old balance in the proof column which causes its registration in the proof register 14, after which the operation is completed by setting the machine for subtraction and rewriting the amounts in the old balance, charge, new balance and proof columns which will accomplish the clearing of all registers. In order that the subtracting operation may be kept entirely distinct from the series of steps of a straight operation and for the further lll) reason that this subtracting operation is Y effected after the removal of the customers ledger and monthly statement, a separate line of sight openings 23 for the display of the distinctively printed numbers used in subtraction is provided in the picturization of the sales journaljust below the openings 22 and is normally covered by a swinging blind Q4 pivoted at one end, as indicated at 25, and having its opposite end extended from beneath the cover so that vit may be readily swung down to uncover andexpose the openings 23 before the slide is moved up to demonstrate the subtracting operation.

It will be noted that the vertical ruling of the columns is extended acrossthe blind and that the circles representing openings in the sales journal are also reproduced on the blind and that the lines indicating the edges Lacasse" oflthe sales journal and of the memberl 7 .are

affected by successive machine operations,`

andthe other of said members provided With characters so arranged thereon that as the relatively movable members assume different relative positions, said characters will be disl played at the (sight openings to indicate the results of successive operations of the machine.V y i 2. A device for demonstratingthe opera` tion of a machine, including a `plurality, of relatively movable members provided with a pictuiization` of the machine, indicating characters, and sight openings so arranged relative to each other that in successive relative positions of said members the results of successive operations of the vmachine will be displayed at the sight o-peniiigs. l

3. `A device. for demonstrating the operation of a niachine,including aplurality of relatively movable members .provided with a picturization of the lmachine, indicati'ng`- cha acters and sight-openings, so arranged relative to each other'that in successive relative. positions of said members the result of l successive operationsof the-machine ivill be i. displayed at the sight openings, andl a movable"blind"covering certain sight openings, butn'iovable therefrom to -facilitate the dem-` onstration of a particular kind of machine" y opera-tion. t

4. A device ,for demonstrating the operation of a recording and computingfmachine which consists of relatively movable meinbers, one of which isI provided with a" reprey sentation Vof 'the machine, representations of the Work elements or sheets and sight openingsvcorresponding nin location With the record recorded on the sheets and With the registration indicated 011 the machine, and the other element being provided with characters so arranged thereon that as the relatively movable members assume successively different relative positions said characters will be displayed at the sight openings in demonstration of the recording and register-` ing results of the successive operations of the machine.

5. A demonstration device including tivo` relatively movable members, one having a series of sight openings for the display ofv characters illustrative of the recording operations on a machine, ^and another series of vopenings -for the display of characters illustrative ofthe registrations or indications of the addingV devices or registers of the machine, the other of said members being provided with the characters to be displayed at the sight. openings, said characters being so located on the second member that in successive positions thereof the characters presented at the sight openings will be illustrative of successive recording andcomputing operations of the machine.

6. A demonstration device including a member bearing a picturization of a recording computing machine capable of recording in various columns and having a series of registers capableof various computing operations, said member a'lso having displayed thereon a picturization ofoiie or more ivork sheets with appropriate columns anddesignations, and said member also having sight openings in the picturization of theqiegisters `and inthe columns of the ivork sheet or sheets, anda second member movable relative to the member first named and having characters so located thereon that in successive positions of said secondinemberthecharacters will be displayed at those sight openings of the first member which correspond with the record made andthe computations" effected `by successive operatioiisof the ina` chine picturized.

7. A device for demonstrating the operation o'f an adding andtyping machine, `coin` prising asheet' on which a pearsthe representation ofthe adding an typing machine,

,the `operation ofivhichis to be demonstrated, the sheet on which the representation appears having sight openings therein, one opening being located inthe irintiug zone on said representation to disc ose' the number supy posed vto be typed, and another 'opening in said sheet at the'counter cover represented in the said representation, and a slide movable back of said openings in the representation of the adding and typing machine, said slide having thereon `predetermined demonstration iigures cooperative with the sight openings y to Vshow the changes inthe typiiws and the corresponding parts `that should appearin counters of the machine.

8. A device for demonstrating the operation of an adding and typing machine comprising a sheet having thereon a representation of the machine, the demonstration of Which is to be made, said sheet having sight openingsvtherein in that part of the representation illustrating the changes in the typing of the machine and also in that part of the representation of the machine illustrating the counter covers, and a slide with numbers cooperating with the first mentioned opening to represent the typings dur.- ingkan operation of the machine, and figures on the slide opposite the other opening to represent the corresponding changes in the adding mechanism of the machine.

9. A device for demonstrating the operation of a typewriting and computing machine coinprising a frame forming a chart having thereon a representation of the typewriting and computing machine, the demonstration of which is to be made, apertures being cut through said chart in locations representing the typing zones and counter zones to expose the resultsvof typing and com Vuting operations, and a slide inserted within suitable guides, for exl'iibitingr entries and corre sponding numbers, in position to` register with said apertures at successive steps or stages of adjustment.

10. A device for demonstrating the op-V eration of a typing and computing machine comprising a card or panel with an illus tration of a computing machine on the face thereof, a slide attached thereto, and lugs on said slide engaging stops located on said card or panel and limiting the movement thereof, apertures being cut through said panel in that part of said illustration representing the printing zone and register zone to expose entries appearing on said slide.

11. A device for demonstrating the operation of a typing and computing machine, a card or panel with an illustration of a computing machine on the face thereof, a slide attachedthereto, lugs on opposite sides of said slide engaging stops located onsaid card or panel and limiting the movement thereof, apertures being cut through said panel to expose entries appearing on said slide, meansy to grasp the slide for manual adjustment, and other means to retain the panel or card in position for demonstration.

1Q. A demonstrating device for a bookkeeping machine including a frame having a lower layer and an upper layer, the latter bearing a picture of said machine on it-s face and having sight-openings at the platen, register and indicator velements of said machine-picture, and a slide disposed between said layers, said slide having thereon characters representing entries on a ledger-sheet, numerals representing register-figures, and letters representing letter-bearing members in an actual machine arranged for indicating thenature-of certam operations of said machine, said characters being arranged to f appear in the platen, register and indicator tries on a ledger sheet and numerals that` represent results shown in the registers of said machine when said entries are run into the machine, and indicator-characters that represent automatic indicating means provided in said machine to inform the operator thereof what kind of register-computing operation the machine is set to perform.

14. A slide for a device for ldemonstrating a bookkeeping machine, said device being provided with a picture of said machine on its Vface and platen and registerjsight-openings, said slide including a plate arranged forvhaving typedthereon groups of demonstration letters and numerals representing entries on a ledger-sheet to be exposedat said platen sight-openings, and Vgroups of demonstration numerals representing figures of registers to be exposed at said register sightopenings, and means for readily locating said registerlgroups of numerals in proper positions on said plate, said means including a mark for locating the first line of characters to be exposed at said platen sight-openings, and a column on said plate positioned to move co-operatively under each of said register sight-openings upon manipulation of said slide, said columns being divided into rectangular blocks, each of said blocks being positioned below a line of the entry characters a distance equal to the dist-ance between said platen and register sight-openings, said groups of entry characters being spaced one or more full typewriter line-space intervals above the nextv lower groups. I

In testimony whereof I hereunto affix my signature.

FREDERICK A. GREIS.

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