US2451631A - Combined accounting machine and typewriter - Google Patents

Description

Oct. 19 1948. A. J, MOELLENBECK ETAL 2,451,631

COMBINED ACCOUNTING MACHINE AND I'YPEWRITER Filed Nov. 6, 1945 Zinnentors 'ARTHUR J. MOELLENBECK AND HOWARD G. STAUFFER HIS Gttorneg Oct. 19 71948. A. J. MOELLENBECK ETAL 2,451,631

COMBINED ACCOUNTING MACHINE AND TYPEWRITER Filed NOV. 6, 1945 2 Sheets-Sheet 2 MK) 2005206 I93 |9 3nventors ARTHUR d. MOELLENBECK AND HOWARD G. S'FAUFFER BYZMM HIS attorney Patented Oct. 19, 1948 COR IBINED ACCUUNTING MACHINE AND TYPEWRITER Arthur 3. Moellenheck, Milwaukee, and Howard G. Stauffer, V-l anwatosa, Wis, assignors to The National Cash Register Company,

Dayton,

@hio, a corporation of Maryland Application November. 6, 1943, Serial No. 509,238

4 Claims. 1

This invention relates to adding and listing machines commonly known as accounting or bookkeeping machines, and more particularl to the type of machine having a complete typewriting mechanism associated with the adding and listing mechanism. Such type of combined adding machine and typewriter is particularly illustrated in United States Letters Patent No. 1,197,276, issued to Halcolm Ellis on September 5, 1916.

More specifically, this invention relates to novel means for taking automatic totals and/or subtotals in combination with several interlocking control devices for preventing the taking of the automatic totals and/r sub-totals during certain specific types of operations.

The following United States Letters Patent, showing various features of a combined adding machine and typewriter of the type shown in the above-mentioned Ellis patent, will be more specifically referred to as the occasion requires during the specification. These patents are United States Letters Patent to Frederick W. Bernau, No. 1,601,102 and No. 1,570,018, dated September 28, 1926, and May 15, 1928, respectively; Emil J. Ens, No. 1,819,084, dated August 18, 1931; Raymond A. Christian, No. 1,939,804, dated December 19, 1933; Charles L. Lee, No. 2,079,355, dated May 1, 1937; Raymond A. Christian, No. 2,082,098, dated June 1, 1937; and Jesse B. G anger, No. 2,217,221, dated October 8, 1940.

One of the objects of this invention is to provide novel means whereby the condition 0; the accumulator will be printed automatically when the traveling carriage is tabulated to a predetermined or selected position.

Another object of this invention is to provide novel means for electromagnetically depressing the total key to take an automatic total when the traveling carriage has been tabulated to a selected or predetermined position.

Another object of this invention is to provide novel means for automatically taking totals and/or sub-totals when the traveling carriage has been tabulated to predetermined or selected positions.

Another object of this invention is to provide novel means in a combined typewriting and adding machine for automaticall taking totals and/or sub-totals, after the carriage has been tabulated to a predetermined position, in combination with means for preventing said automatic total from being taken when the accumulator is in a negative condition.

A further object of this invention is the proiii vision of means for taking automatic totals and/or sub-totals when the traveling carriage is in a predetermined position, in combination with means for preventing said automatic total from being taken when said traveling carriage has been moved into said predetermined position under control of the typewriting mechanism.

A still further object of this invention is the provision of means for taking automatic totals when the traveling carriage is in a predetermined position, in combination with means for preventing said automatic total from being taken while the carriage is moving into said position.

A further object of this invention is to provide means for taking automatic totals when the traveling carriage is in a predetermined position, in

combination with means for preventing the taking of such automatic totals during the operation of the carriage return mechanism.

Another object of this invention is the provision of novel means for taking automatic totals when the carriage is in a predetermined 01' selected position, in combination with means for preventing the taking of such totals during the time the machine is being operated to accumulate in the accumulator.

More specifically, it is an object of this invention to provide a novel automatic electromagnetically operated means for taking totals and/or sub-totals when the traveling carriage is in a predetermined position, in combination with a plurality of switches arranged in circuit with the electromagnetic means to prevent operation of said electromagnetic means during certain types of operations of the machine.

A further specific object of this invention is the provision of novel electromagnetic means for automatically takin totals and/0r sub totals when the traveling carriage is in a predetermined position, in combination with a pluralit of switches in circuit with said electromagnetic means to prevent said electromagnetic means from taking the automatic total and/or sub-total during certain types of movement of the traveling carriage and of the machine.

With these and incidental objects in view, the invention includes certain novel features of construction and combinations of parts, the essen tial elements of which are set forth in appended claims and a preferred form or embodiment of which is hereinafter described with reference to the drawings which accompany and form a part of this specification.

Of said drawings:

Fig. 1 is a right side elevation of a portion of 3 the machine, showing the electromagnetic means for depressing the total key, a part of the electric drive mechanism for the machine, and also a portion of the totalizer mechanism.

Fig. 2 shows a portion of the traveling carriage stop bar and the hanging bar lever for controlling the total key lock.

Fig. 3 is a plan view means, partially broken away, depressing the total key.

Fig. 4- is a wiring diagram showing the electromagnet and the switches in circuit therewith.

Fig. 5 is a detail View, partially broken away, showing the total key, the lock therefor, and the means under control of the hanging bar lever for releasing the look from the total key.

Fig. 6 is a side elevation showing the traveling carriage in general, the sub-total key and the means operated by the traveling carriage for depressing the sub-total key, and also a portion of the typewriting mechanism and carriage return mechanism.

Fig. 7 is a detail view showing a portion of the typewriter es-capement mechanism and a portion of the carriage tabulating mechanism.

Fig. 8 is a front elevation showing the means on the traveling carriage for depressing the'subtotal key.

Fig. 9 is mechanism for initiating movement.

Fig. 10 is a rear elevation, partially broken away, showing a part of the carriage return mechanism and one of the control switches controlled thereby.

Fig. 11 is an assembled detail View, as seen from the rear of the machine, showing a portion of the traveling carriage tabulating mechanism.

Fig. 12 is a sectional detail view through a portion of the mechanism shown in Fig. 7.

Fig. 13 is a detail view of the part of the mechanism shown in Fig. 11.

of the electromagnetic for automatically a detail front elevation of a part of the the carriage return GENERAL DESCRIPTION Described in general terms, the invention herein includes an electromagnetic means for automatically taking totals and/or sub-totals from an accumulator in a machine of the type shown and described in the above-mentioned Ens Patent No. 1,819,084.

Machines of the type disclosed in the Ens patent and other patents mentioned herein are provided with a traveling carriage having means thereon for controlling various functions of the machine, such as column selection through tabulating mechanisms, so that, when the carriage is in a predetermined or selected position, totals may be taken of the machine, or sub-totals may be taken of the machine. Many improvements have been made in machines of this type, such asthe inclusion of overdraft or negative totaltaking mechanism, and the present invention is in connection with a machine having an overdraft mechanism such as that disclosed in theabovementioned Lee Patent No.'2,079,355.

Also, automatic carriage return mechanism has been added to machines of the type shown in the Ellis Patent No. 1,197,276, such as that shown in the Bernau Patent No. 1,670,018 and also in the Ganger Patent No. 2,217,221.

As stated above, the invention broadly includes electromagnetic means for automatically taking totals and/or sub-totals from the accumulator ivhen'thecarriage is in a predetermined position. Means is also provided for preventing the automatic total-taking even though the carriage is in said predetermined position, if the accumulator shows or has a negative amount therein, such as an overdraft. Other means is provided for preventing the taking of a total or a sub-total during the time the machine is being operated to add or accumulate in the accumulator. Such means includes one of several switches which are arranged in a series circuit with the electromagnetic means, which switch is normally closed, but, when the machine is being operated to add, the switch is automatically opened, thus breaking the circuit to the electromagnet. Also, when the overdraft key has been released, due to the fact that the accumulator shows an overdraft, this same switch is opened for the same purpose of breaking the circuit to the electromagnetic means.

There is also means provided in the form of another switch in circuit with the electromagnetic means, which switch is normally closed but which is adapted to be opened while the carriage is being tabulated to the above-mentioned predetermined total-taking position.

Another feature of the present invention is another switch, also in series circuit with the electromagnetic means, for preventing an operation of the electromagnet during the time the carriage is being returned from any typewriting or tabulated position to its normal right-hand position.

The invention also includes means for controlling the lock for the total key, which is normally eiiective to prevent that look from being released when the traveling carriage is moved into said predetermined total position by the typewriting mechanism during the typing of any information or data in connection withany transaction which is being recorded by the recording and printing mechanism of the machine.

Another switch, normally open, is also in series circuit with the electromagnetic means, which switch is adapted to be closed when the traveling carriage reaches the predetermined position after having been tabulated to that position, so that the electromagnet will be energized to automatically depress the total key when all of the other above-mentioned switches, which are in this same series circuit, are closed.

All of the details of the above switches and cOntrolling devices will be described in detail in the detailed description which follows.

DETAILED DESCRIPTION M ain operating mechanism and adding and totalizing mechanisms The mechanism of the machine embodying the present invention is supported between a pair of side frames 5t and 61 (Fig. l) which are secured to and carried by a base 62. Enclosing the mechanism oi the machine is a case 53 (partially shown in Figs. 6, 7, and 8) which case is also secured to the base 62.

The accounting machine mechanism is operated by a conventional type of motor, either-of the start-stop type shown in United States Letters Patent to Charles H. Arnold, No. 2,142,341, dated January -3, 1939, or of the conventional type of constantly running motor, such as that shown in the above-mentioned Bernau Patent No. 1,601,102. Either of said types of motors, as is shown in the two patents just mentioned, is adapted to operate a link 65 (Fig. 1), which is pivoted to an operating arm 6s fast on a main drive shaft 61, which operates the mechanism of the machine. The link is adapted to be raised and lowered, thus rocking the arm 66 and consequently the shaft 61 first counter-clockwise and then clockwise to operate the machine.

The usual and well-known totalizer elements it] and adding racks H (Fig. 1) are provided to accumulate amounts set up on a keyboard. As is well known, totals and sub-totals can be taken of the amounts accumulated on the totalizer elements 1!! at any desired intervals, The invention disclosed herein relates to the operation of the total and/or sub-total keys to take totals or sub-totals, and therefore there is no illustration or description of the accumulating mechanism as far as the transfer is concerned intermediate the various denominational elements of the accumulator, nor is there shown or described any of the mechanism for engaging and disengaging the totalizer with the racks at the various times necessary for total, sub-total, and adding operations. However, such mechanism is fully illustrated and described in the above mentioned Ens patent, and reference may be had thereto for a description of that mechanism.

Totals are taken from the totalizer elements it! in this type of machine under the control of a total key '!5 (Figs. 1, 5, and 8). When this total key is depressed, the mechanism shown and described in the above-mentioned Ens patent engages the totalizer elements H3 with the racks H at such time that the racks H will clear the totalizer elements 10 of any amount that is stored therein, so that the same may be printed by printing mechanism to be described hereinafter.

Such machines are also usually provided with a sub-total key to permit the taking of a subtotal or sub-balance, which, as is well known in the art, includes the clearing of the totalizer elements 16 by the racks H, printing that amount,

and then causing said racks 7! to again add that total back into the totalizer elements. Such sub total mechanism is also fully illustrated and described in the above-mentioned Ens patent. However, in the present application a sub-total key 16 is shown in Figs. 6 and 8, to be automatically depressed by means to b described hereinafter, so that sub-total may be automatically taken as well as totals.

In accounting machines of the type in which the present invention is involved, and particularly when certain machines are used in banking institutions, the totalizer elements are often in a, negative condition, due to the fact that a greater amount has been subtracted therefrom than has been added thereto. This negative amount, known in the art as an overdraft, may be printed by machines of this type by the means which is fully illustrated and described in the above-mentioned Lee Patent No, 2,079,355. In the present invention, however, only a very small portion of that mechanism is herein shown, and this will now be described. An overdraft key 17 is shown in Fig. l and is normally latched in its undepressed position by a latch 78, to which is pivoted a link '59 in turn connected to an arm secured to a shaft Bl, known in the art in connection with this type of machine as the overdraft shaft. This shaft 88 is adapted, by mechanism fully illustrated and described in the abovementioned Lee patent, to be rocked in a clockwise direction whenever the totalizer elements H! are in a negative or overdrawn condition, and, when this shaft 81 is so rocked in a clockwise direction, the link 79, rocks the latch 78 to release it from a shoulder 82 on the overdraft key 11, thus permitting depression of the overdraft key Tl when the totalizer elements 10 are in a negative or overdrawn condition. This key 11, at the end of such operations, is returned to its normal position by a spring 83.

Printing mechanism Only a small portion of the printing mecha nism is shown in this application, and, for a further and fuller description thereof, reference may be had to the above-mentioned Ellis patent. Connected to the actuating rack 1! (Fig. 1) by a pinand-slot connection is a lever 9! pivoted at 92. Pivoted to the lever 9! is a link 93, which in turn is pivoted to a type segment 94, which cooperates with a platen carried by a traveling carriage to be described hereinafter.

From the above description it is clear that the difierential movement of the rack I I, through the pin-and-slot connection 96, is transmitted to the type segment 94, so that the amount which has been taken from the totalizer and set up on the rack H is transmitted differentially to the type segment 96, o that it may be printed on a printing medium around the platen 95,

Traveling carriage A traveling carriage I90 (Figs. 6, 7, and 10) is supported at its rear side for horizontal movement on the case 53 by means of a lower ballrace iii! secured to the case 63, an upper ballrace Hi2 secured to the frame of the traveling carriage lull, and a plurality of ball bearings I03 interposed between the ball-races l9! and H12. The front of the traveling carriage Hill is supported by means of rollers, which bear on the top surface of a guide rail HM secured to the case The traveling carriage Hill is prevented from tipping up in front by means of rollers :05 cooperating with the bottom surface of the rail 1G4. Brackets H16, secured to the carriage 98, cooperate with undercut portions of the ballrace let to prevent the carriage from being tilted upwardly at the rear side. The carriage 69 supports the platen 95, previously described, so that the platen may be rotated for line-spacing and shifted laterally with reference to the machine, along with the carrigae 98.

The traveling carriage carries the usual stop bar lil'l on the front portion thereof, which, as is well known in the art, is for the purpose of having adjustably mounted thereon stops of various types for controlling the various functions of the machine.

Mounted on this stop bar it is a pair Of blocks I83 (Figs. 6 and 8) carrying a cam arm 58!] cooperating with a roller Iii) carried by a bell crank iii pivoted at 1 E2 to a bracket H3 secured to the case 63. The bell crank has a flange H4, which lies directly above the sub-total key 76, with the result that, when the traveling carriage is moving in either direction, the cam arm M9, by its contact with the roller Ht, operates the bell crank I H to depress the sub-total key so that a sub-total may be taken from the accumulator wheels 15 when the total key F5 is automatically depressed by means to be described hereinafter.

It will be understood that in machines of this type it requires the depression of the sub-total key 16, along with the depression of the total key 75, in order to take a sub-total or sub-balance from the totalizer wheels 78, as fully described in said Ens patent.

The cam arm 159 is so located on the carriage that the sub-total key '16 is depressed just before the carriage reaches the sub-total columnar position, while moving in tabulating direction. Therefore, when the carriage reaches the subtotal position, the cam arm IE9 is beyond the roller I'll! on the bell crank III. The usual latch means, shown and described in the above-mentioned Ens patent, latches the sub-total key lie in operated position until released during the machine operation.

It should be here noted that the sub-total key 16 is depressed by cam arm I99 whenever the carriage moves the cam arm I69 over the roller III], and this occurs in. tabulating, return, and letter-space movements of the carriage. However, the sub-total key has no control over the functions of the machine, other than controlling the time of release of the total key I5. Therefore, when the sub-total key 16 is depressed, without depressing the total key I5, no control is effected by the sub-total key, and depression thereof is an idle operation. When the sub-total key is depressed for such an idle operation, it is released during the operation of the accounting machine in the usual manner by mechanism shown and described in-said Ens patent.

The traveling carriage I66 is also provided with the usual carriage return mechanism, which will now be briefly described. This return mechanism is substantially of the same principle of operation as that shown in the above-mentioned Bernau Patent No. 1,670,018 and is also like that shown in the Christian Patent No. 2,082,098.

This carriage return mechanism, of course, is for the purpose of returning the carriage back to its extreme right-hand position after certain types of operations have been accomplished by the machine. This carriage return mechanism may be operated or started automatically, or it may be operated by moving the carriage to the left manually until the mechanism which sets off the carriage return mechanism or initiates its movement is contacted, whereupon it is connected to the driving motor of the machine to return the carriage automatically to its extreme right-hand position.

7 ed the usual rack I I5, which meshes with a pinion IIS. This pinion carries clutch teeth II'I adapted to be moved upwardly into cooperation with an operating or return clutch IIB, which is driven by means connected to the motor which drives the operating mechanism of the machine. This operating motor (not shown herein) is adapted to be started by means of a mercury switch H9 (Figs. 6 and 10), which is secured to a block l2!) adapted to be rocked when the pinion I6 is raised to engage its teeth II! with the clutch H8.

When the mercury switch H9 is tilted, it completes the circuit to the electric motor to cause it to drive the clutch I I8 to cause the raised pinion II6, through the rack M5, to automatically return the carriage I to its extreme right-hand position upon engagement of a stop IZI (Fig. 9), carried on the stop bar Hi1, wit-h a finger of a sliding bar I22 (Figs. 6 and 9) mounted in the case 83. This bar I22 is connected by a bell crank I23 to a vertical rod or link 525, the lower end of which surrounds the forward end of a lever I25 pivoted at I26 to the case 63. The rear end of the lever I25 (Figs. 6 and engages a lever I21 pivoted at I28 on the case 63. The other end of the lever IZ'I is connected by a spring I29 to a lever I3, which also engages a grooved hub of the pinion H6. Another arm I3I of the lever I38 carries the block I20. When the carriage is 8, moved to the left, so that the stop IZI (Fig. 9) engages the finger at the left of the bar I22, said bar I22 is moved toward the left (Fig. 9) and, through the bell crank I23, depresses the rod I24, thus rocking the lever I25 counter-clockwise (Fig. 6), which rocks the lever I27 (Fig. 10) in a clockwise direction, whereupon the spring I29, acting as a link, rocks the lever I36 counter-clockwise. This movement of the lever I3Il rocks the mercury switch, which closes the circuit to the motor, thus starting to drive the clutch H8, and, as the lever I36 continues in its counter-clockwise movement, the pinion H6 is raised and the clutch II8 engages the teeth II? of the pinion H6, wher upon the carriage I08 is returned to its extreme right-hand or normal position. This direction, as viewed in Fig. 10, is toward the left.

The pinion I I5 and the clutch I I8 are mounted in what is known as a carriage return head I32, which is supported on the case 63.

Automatic depression of total key As stated previously, the total key I5 is adapted to be automatically depressed when the traveling carriage lei) has reached a predetermined or selected position, in which position it is desirable to print the total or balance from the totalizer elements it). The means for accomplishing such depression of the total key It) includes a normally inactive electromagnetic means adapted to be rendered active by having the circuit therethrough closed when the traveling carriage Id!) has reached a predetermined position. Also in circuit with the electromagnet and said switch are four other switches, all of which have to be closed in order to energize the electromagnet to render it active. lhese switches and the means for controlling them will be described hereinafter.

Fig. 4 shows a wiring diagram of the circuit for the electromagnetic means and includes in that circuit the above-mentioned switches. This circuit is as follows: from the positive side of a supply line Mil through a fuse I il to a manuallyoperable snap switch I42 mounted on the case 63 (Fig. 6), through a switch Hi3 (Fig. 1) controlled by the machine operating mechanism and also by the overdraft key releasing mechanism, through a switch I 34 (Fig. 7) controlled by the carriage tabulating mechanism, then through a switch M5 (Fig. 10) controlled by the carriage return mechanism, and thence through a switch M5 (Figs. 6 and 10), which is normally opened but is adapted to be closed by a block Ml mounted on the traveling carriageIilil and in the total position thereof, and also by a block I48 mounted on the traveling carriage I65 in the sub-total position thereof. When the switch it has been closed either by the block Iii? or by the block I68, the circuit continues through an electromagnet Hi9 and from the electroinagnet I59 to the minus side I59 of the supply line.

The electro-magnet I49 (Figs. 1 and 3) is mounted on a plate I55 secured to the bottom of the base 52. Pivoted to a core I52 of the electromagnet I69 is a link I53, which is also pivoted on a stud I5 i secured to the base 62. Pivoted to the link IE3 is a link I55, which in turn is pivoted to a bell crank I56 mounted on a stud I'I carried by a bracket I53 secured to the base 62 by means of screws I59. The bell crank I58 carries a stud I68 having an annular groove in which a loop I6I of a wire or link I62 operates. The upper end of the link I62 is connected to the lower end of the total key 15. The loop I6I permits manual depression of the total key electromagnet I49.

When all of the switches I42, I43, I44, I45, and I46, shown in the wiring diagram of Fig. 4, are closed, the electromagnet I49 is energized, whereupon the core I52 is moved toward the left and the link I55 rocks the bell crank I 56 (Fig. l) counter-clockwise, whereupon the link I62 lowers or depresses the total key 15.

As stated above, this occurs when the traveling carriage I90 is in one of a plurality of predetermined positions. One of these positions is the total position, in which the total is printed from the totalizer elements 19, and another is the subtotal position, in which the sub-total is printed from the totalizer elements 19. The block I41 (Fig. 10) controls the switch I46 to close the same when the carriage I80 is in the total columnar position, and the block I48 closes the switch I46 when the carriage I09 is in the sub-total columnar position.

The total key 15 is normally locked or held against depression at all times except when the carriage I89 is in the total or sub-total position. Such positions are determined by a preset stop I68 (Fig. 2), which determines the total columnar position of the carriage I99, and a preset stop I69, which controls the sub-total columnar position of the carriage I90.

When the carriage I is in either of said two columnar positions, the lock for the total key is released from the total key, so that it may be automatically depressed by the electromagnet I49 in the manner previously described.

When the carriage I89 is in the total columnar position, the stop I68 (Fig. 2) contacts the top of an upturned finger I19 of a lever I1I pivoted on a stud I12 mounted on a cross frame I13 (Fig. 11), which is carried by the side frames 68 and 6!. The stop I 68 depresses the lever I1Ithat is, rocks it clockwisewhereupon its left end raises a link I14 (Figs. 2 and having a stud I15 connected by a spring I13 to a stud I11 on a link I19, thus raising the link I18 when the right end of the lever I1I is depressed by the stop I68. The link I18 carries a pin I19 engaged by a slot in the lever I89 pivoted on a stud I8I carried by the left side frame 8|. A flange I82 of a lever I83 pivoted on the stud I8! is held against the under left side of the lever I80 by a spring I84. Pivoted to the lever I83 is a latch link I85, the forward end of which is slotted to ride on a stud I86 carried by the left side frame 6|. The link I85 has a latch finger I 81 engaging a notch I 88 in the total key 15.

When the lever I1I is rocked clockwise as viewed in Fig. 2 by the stop I68 in the manner described above, to raise the link I 18, the pin I19 rocks the lever I80 counter-clockwise, whereupon it, through the lever I83, moves the link I85 to the right (Figs. 1 and 5) and withdraws the latching finger I91 from the notch I88 of the total key, thus conditioning the total key for depression by the electromagnet I49 when the carriage I00 has been tabulated to the total columnar position as designated by the carriage stop I68.

When the carriage stop I68 moves off the finger I of the lever I1I, the spring I84 rocks the lever I83 clockwise and moves the finger I 81 back against the side of the key 15, so that, when it is restored near the end of the operation, the finger I81 will again engage the notch I88 and lock the total key against depression. After the key 15 has been depressed, the lever I83, by its contact with the lever I80, will pull down on the link 15 independently of the 10 I18, thus lowering the left end of the lever I1I, moving it into its normal position, whereupon the finger I19 will again be in position to be contacted by the total stop I98 or the sub-total stop I69.

When the sub-total stop I89 is moved into the sub-total columnar position, wherein this stop I69 contacts the top of the finger I19, the latch finger I81 (Fig. 5) is withdrawn from the total key 15 in a manner identical with that just de-' scribed in connection wit-h the total stop I 83, so that in taking sub-totals, when the sub-total key 19 is depressed by the cam arm I99 on the carriage, as previously described, the electromagnet I49 can depress the total key 15 to complete the operation of taking a sub-total.

Tabulating control of electromagnet When the machine is being tabulated to any of its columnar positions, it is very essential that the total key 15 be not depressed during the tabulating movement of the carriage; therefore it is necessary to open the switch I44 (Figs. 4 and 7), so that, if the carriage is tabulated into a position whereby either of the stops I68 or I69 (Fig. 2) passes over the lever ill, the closing of the switch I49 (Figs. 4 and 6) will have no effect-that is, it will not complete the circuit to the electromagnet Mil-because of the fact that the switch I44 under control of the tabulating mechanism has been opened upon the initial movement of the carriage during the tabulating thereof. As is fully described, the tabulating movement of the carriage in the above-mentioned Christian Patent No. 2,882,098 is started by the downward movement of a tabulating bar I (Fig. 11), which rocks a lever I9I counter-clockwise. This lever I9I is pivoted on the frame I13. The lever I 9| cooperates with the lever I92 pivoted on a stud I93 secured to the frame I13. The lever I92 has a surface I94 (Fig. 13), which cooperates with a stud I95 (Fig. 11) in an escapement control plunger I96 supported for vertical sliding movement in a groove in the frame I13. A spring I91 is tensioned to urge the lever I92 counter-clockwise to normally maintain an upper raised portion I98 thereof in contact with the lower surface of a lug I99 on the frame I13. This lug I99 is slotted to forni a slide for the plunger I99. The lever I92 carries a stud 200, which extends through a slot 20! in a tabulating stop bar 202, [the upper end of which is loosely supported in a vertical groove in the tabulating frame I13. The right edge of the bar 202, as observed in Figs. 11 and 13, cooperates with a rounded projection 293 of a latch 204 pivoted to the frame I13. A torsion spring 285 urges the latch 294 clockwise into contact with a stud 206 carried by the lever I92. A torsion spring 201 cooperates with a stud 208 in the bar 202 to urge said bar upwardly to normally maintain the lower end of the slot 28I in contact with the stud 280. Pivoted on the stud I93 is a lever 209 having an enlarged portion 2I9 cooperating with the stud I95 in the plunger I 96. A torsion spring 2| I urges the lever 209 counterclockwise t-o normally maintain an upwardly extending portion 2I2 thereof in contact with the lower surface of the lug I99. A stud 2 I4 normally connects the lever 209 to an escapement control bar 2 I 5 supported in the same vertical groove as the bar 202 and urged counterclockwise by a spring H6. The stud 208 in the bar 202 extends through an opening 2I1 in the bar 2I5. The bar 2I5 has a recess 2I8 with a notch 2| 9 therein, which cooperates with a square i A. stud 228 in a stop pawl 22I held in contact with a stud 222 by a spring 223..

The downward movement of the tabulating bar or lever I953, effected either manually or by means of .tabulating keys, or automatically by means illustrated and described in the above-mentioned Christian Patent No. 2,082,098, rocks the lever IQI counter-clockwise, which imparts a clockwise movement to the lever I92, whereupon the spring 29?, in cooperation with the stud 2538, lifts the bar 222 upwardly until its upper end is in the path of a tabulating stop 22 3 carried by the stop bar NH. The latch 2M, influenced by the spring 205, hooks under the stud 286 to retain the lever I92 in its moved position.

The bar 2! 5 is raised by stud 208 when the bar 202 is raised, and the latch 2B4 moves both bars 2I5 and 29?. toward the left, causing them to be latched in their upward positions by the shoulder of the notch 2H3 snapping over the square stud The clockwise movement of the levers I92 and 269 through their engagement with the stud I95 moves the bar 25 downwardly. Projecting into an opening near the bottom of this bar Q95 is the end of a bell crank 230 (Figs. '7 and 11), which is pivoted on a stud 23E of a bracket 232 secured to the lug I539 of the frame I13. A spring 233, which normally holds the bar I98 in its upward position, shown in Fig. 11, is stretched and put under tension upon the downward movement of the bar I96 by the levers I92 and 209. Pivoted to this bell crank 236 is a link 23 1, which is pivoted to a lever 235 pivoted at 236 to a lug (not shown) of a top frame 231, which is secured to the side frames 60 and BI. A link 238 connects the lever 235 with an arm 239 pivoted on a stud 2st mounted in a portion (not shown) of the top frame 23?. A yoke 24! connects the arm 239 with an arm 222, which contacts and rocks an escapement retaining pawl 243 (Figs. 7 and 12) away from an escapement ratchet 242, which is secured to a shaft 225, which also has secured thereto a pinion 246 meshing with a rack 24'! on the traveling carriage I00.

As the link 234 is moved toward the left (Fig. 7) in the manner previously described, the lever 235, the link 252, and the arms 239 and 2652 disengage the pawl 2 43 from the ratchet 244 to permit a free movement of the pinion 228 by the rack 2%? on the traveling carriage I08 during the tabulating movement of the carriage.

Pivoted to the lever 235 is a link 25c, which is also pivoted to the lower end of an arm 25I pivoted on a stud 252 supported by the case 63.. This arm 25I carries one prong of the switch 144, and consequently, when the tabulating movement of the carriage I is initiated by the depression of the tabulating lever I90 and the link 23 is moved toward the left as viewed in Fig. '7, upon such movement of the tabulating lever I95, the link 250 is moved to the left, which rocks the arm 25! clockwise, thus opening the switch is so that the circuit to the electromagnet M9 is broken by the opening of the switch I44 during the tabulating movement.

When the stop 224 (Fig. 11) strikes the bar 262, the bar 202 is pushed downwardly in the manner described in the abovementioned Christian Patent No. 2,082,098, and, as the carriage rebounds in the usual manner-that is, when it backs up slightly or the stop 224 moves slightly to the left and then comes back to its stopping position, when it reaches said stopping position it will strike the bar H and move that bar downwardly, whereupon both of the levers I92 and 209 will be released and allowed to rock counter-clockwise under the tension of the spring 52?, whereupon the spring 233 (Fig. 7) will rock the bell crank 23% clockwise, thus moving the link 236 to the right which in turn moves the link 256 to the right and closes the switch M2 after the carriage has settled in the position into which it was tabulated. If the position into which the carriage is tabulated happens to be the total columnar position, the stop is (Fig. 2) acts in the manner previously described, to withdraw the latch :8; from engagement with the notch I68 in the total key 75. In such position of the carriage, the block Ill? closes switch I56, whereupon the electromagnet ids is energized (assuming at this time that the switches Hi2, I63, and M5 were closed), to depress the total key 3-5. When the carriage is tabulated into the sub-total columnar position, then the stop IE9 (Fig. 2) controls the lever Ill to withdraw the latch iBi, and the block Hi8 closes the switch hit, in the manner described above.

Control of electromagnet by the overdraft or negative balance mechanism In machines of this type, as shown by the patent to Lee, No. 2,079,355, it is impossible to depress the total key l5, or the sub-total key 16, when the totalized elements IE! are in a negative or overdrawn condition. When the totalizer elements are in negative condition, the overdraft key ii is released, and it may then be depressed to take the negative balance from the totalizer elements it. During a negative balance operation, the total key '55 remains locked by the latch finger I8? (Fig. 5). However, as has been previously stated, when the carriage is moved into the balance position, the latch finger I81 is withdrawn, thus freeing the total key 15, and therefore it is highly desirable and necessary that the circuit to the electromagnet Hi9 be broken when the totalizer elements it) are in a negative or overdrawn condition.

This mechanism will now be described for breaking the circuit to the electromagnet I49 when the totalizer elements ii! are in a negative or overdrawn condition. As has been previously described, the link is (Fig. 1) is moved to the left to release the'latch is from thekey H, to unlock this key for depression whenever the totalizer elements is are in a negative condition. Rigidly connected to this link I9 is an arm 260, which carries one blade of the previously mentioned switch Hi3, which is normally closed. By referring to Fig. 1, it can be seen that, whenever the link I9 is moved to the left, due to an overdraft condition of the totalizer element ID, to unlock the overdraft key, the arm 26% will be moved toward the left, thus opening the switch i 52 and breaking the circuit to the electromage net Hi9 so that, notwithstanding the fact that the carriage has been tabulated to the balance columnar position, the electromagnet I22 will not be energized, and consequently the total key I5 will not be automatically depressed whenever the totalizer elements are in a negative or overdrawn condition.

Control of electromagnet by machine operating mechanism during adding It is also very desirable that the electromagnet Hi9 be not energized during any movement of the machine during adding operations or any other type of operation except the proper time ior taking a total or a sub-total from the totalizer.

To accomplish this, the switch I43 (Fig. 1), which is normally closed, is adapted to be opened upon the initial movement of the operating mechanism to drive the machine. The operating arm I36 (Fig. 1) carries a stud 26I engaged by an arm 262, which is pivoted on the shaft 6?. Pivoted to this arm 262 is a link 2653, which is used in connection with. special tabulating mechanism shown in the above-mentioned Christian Patent No. 2,082,098. This link 263 is adapted to be moved to the right upon the beginning of every operation of the machine by the motor link 65 in the manner previously described. Rigidly secured to the link 253 is an arm 264, which carries one of the blades of the switch I 43, and consequently, whenever this link 263 is moved toward the right, the arm 264 opens the switch I43, thus breaking the circuit to the electromagnet I4 5 upon the initial movement of any operation of the machine. At the end of any machine operation, the link 263 is moved back to the position shown in Fig. 1, whereupon the switch I43 is again closed, so that, should the carriage be tabulated to the balance or sub-balance columnar positions and all of the other switches in circuits, as viewed in Fig. 4, be closed, then the electromagnet I49 can be energized upon the closing of the switch I 4% to automatically depress the total key or the sub-total key I6, as the case may be, as a preliminary to an operation of the machine to take the balance or the sub-balance.

Control of the electromagnet by the carriage return mechanism Itis also very desirable that the electromagnet I 49 be not energized during the carriage return movement; in other words, during the time the carriage is being returned from any of its tabu lated positions back to its normal position. Therefore the switch I45 (Figs. 4 and 10) is arranged in circuit with the electromagnet I49. This switch is normally closed, but immediately upon the beginning of the carriage return movement this switch I45 is opened to break the circuit to the electromagnet I49 to positively prevent any actuation of the electromagnet, thus preventing depression of the total key or the subtotal key during the carriage return movement. The switch I45 (Fig. 10) has one of its contact arms mounted on a block 266 secured to the carriage return head I 32. The other contact of the switch is carried by an arm 26?, which is secured to the block I29, which, it will be recalled, is rocked in a counter-clockwise direction upon the movement of the lever I 39, which is caused by the stop iZi (Fig. 9) on the carriage contacting the upturned finger of the bar I22, which initiates the carriage return movement. Consequently, when this block I29 is moved counterclockwise, the arm 25? is raised, thus opening the switch I and breaking the circuit to the electromagnet I49 so that this magnet cannot be energized during any carriage return movement.

Typewriting mechanism and control of electromagnet by the same In Fig. 6 there is shown a usual type bar 25! with its operating link 258, which, when the type bar is moved into position to type, contacts and operates an escapement frame 259 to operate an escapement pawl 27% (Fig. 7) and the retaining pawl 243, to cause the carriage Hill to 14 be letter-spaced by the ratchet wheel 244, the gear 246, and the rack 241.

For a more detailed description of the typewriting mechanism, reference may be had to the above-mentioned Ellis Patent No. 1,197,276 and also to the Granger Patent No. 2,217,221, above referred to, which shows the complete typewriter escapement mechanism and how it is actuated.

It is desirable that the electromagnet I49 be not operated during the time the typewriting mechanism is being operated to type any notes or letters in connection with the accounting machine.

The blocks I47 and I48 (Fig. 10) are of sufficient length to cover three letter spaces of the typewriter escapement, and consequently, when the carriage is tabulated so that the block I41, for example, strikes the switch I46, it will close the switch and hold it closed for a distance of three letter spaces of the typewriter carriage I80. During this time, however, it is necessary that the total key '15 be not depressed. However, as soon as the first typewriter space of the block I47 contacts the switch I46, it will close the same and energize the electromagnet I49, which will immediately tend to pull down on the key 15 and cause the key 75 to hold the latch I31 so as to prevent movement or disengagement of this latch 58? from the key I5 at the time when the stop 68 or I69 arrives on top of the finger I'IB of the lever Ill. When this occurs and the electromagnet I49 is energized prior to that time, due to the length of the blocks I47 and I 48, the spring i'IS is merely stretched and the link I78 cannot be raised due to the pressure of the upper edge of the notch I88 of the total key 75 on the latch finger I82.

. OPERATION Since the operations of all of the parts of the various mechanisms have been fully described in connection with the detailed description thereof, it is believed that it is not necessary to go into any lengthy description of the operation of the entire machine other than to say that, when the accounting machine of the type herein disclosed and described is being used for bookkeeping, and the traveling carriage has been tabulated into a definite predetermined position, such as the total or balance column or the sub-total or sub-balance column, in which position stops I68 and I69, respectively, are in positions directly over the finger I10 of the hanging bar lever III to cause release of the latch I8! from the total key 15, the switch I46, which is normally opened, is

" closed by the block I41 on the traveling carriage,

thus energizing the electromagnet I49, whereupon it automatically depresses the total key I5. This operation of the electromagnet I49, of course, depends upon whether or not the other four switches (Fig. 4) I42, I43, I44, and I45, in series circuit with the electromagnet I49, are closed.

The snap switch I42, of course, is the first one to be closed by the operator, and the switch I43 will remain closed provided there is no overdraft or negative balanced in the totalizer elements I0, and also provided that the operating mechanism, consisting of the arm 66 and the shaft 61, driven by the link from the motor, is in its normal position. Likewise the switch I44 must also be closed, and this switch will remain closed if the tabulating mechanism is not in operation, as has been described previously. The switch I45 (Fig. 10) must also be closed, which will be the case if the carriage return mechanism is not inoperation. In taking sub-totals, of course, the subtotal key 16 is held by its latch (not shown after being depressed by the bell crank Ill (Figs. 6 and 8), at which time the block I48 (Fig. 10) is the activating means for closing the switch 146.

While the form of mechanism herein shown and described is admirably adapted to fulfill the objects primarily stated, it is to be understood that it is not intended to confine the invention to the form of embodiment herein disclosed, for it is susceptible of embodiment in various forms all coming within the scope of the claims which follow.

What is claimed is:

1. In a machine of the class described, the combination of an accumulator; a manually depressible total key for conditioning certain elements of the machine for total operations; means for operating the machine to add into, or subtract from, the accumulator and to take totals therefrom; a traveling carriage; electromagnetic means for depressing the total key; means operated by the carriage for rendering the electromagnetic means effective; a manually depressible, normally locked overdraft key; means controlled by the accumulator for unlocking the overdraft key; and means intermediate said overdraft key and said machine operating means and operable by the overdraft key unlocking means upon operation of the same to prevent operation of said electromagnetic means, said intermediate means being operable by said machine operating means during adding operations.

2. In a machine of the class described, the combination of typewri-ting mechanism; an accumulator; a manually dep-ressible total key for conditioning certain elements of the machine for total-taking operations; carriage tabulating mechanism; a traveling carriage adapted for letter space movement under control of the typewriting mechanism and adapted for column space movement under control of the tabulating mechanism; a total key locking device for normally preventing depression of .said total key; means on the traveling carriage for releasing the locking 'device from the total key when :the carriage is in a certain position; andelectromagnetic means for depressing the total key when said carriage has been moved into said certain position by the tabulating mechanism, and for preventing release r of the locking device from the :total key when the carriage has been moved into said certain position by the typeWriting mechanism, to prevent depression of the total key during 'typewriting.

3. Ina machine of the class described having a traveling carriage adapted for letter space movement and for column selecting movement under control of typ-ewriting mechanism and tabulating .mechanism respectively; in combination with an accumulator; a manually depressible total key for conditioning certain elements of the machine for total-taking operations; a locking device normally engaging said total key to prevent depression thereof; means on the traveling carriage for releasing the locking device from the total key when the carriage is in a predetermined position; and means under control of the tabulating mechanism for depression the total key When said carriage has been moved into said predetermined position by the tabulating mechanism, and under control of the carriage for preventing release of the locking device from the total key when said carriage has been moved into said predetermined position by the typewriting mechanism.

4. In a machine of the class described having a traveling carriage adapted for letter space movement and for column selecting movement under control of typewriting mechanism and tabulating mechanism respectively; in combination with an accumulator; a manually depressible total key for conditioning certain elements of the machine for total-taking operations; a locking device normally engaging said total key to prevent depression thereof; means'on the traveling carriage for releasing the locking device from the total key when the carriage is in a predetermined position; electromagnetic means for depressing said total key when the carriage is in said predetermined position but normally tie-energized; a normally open switch in circuit with the electromagnetic means; a second normally closed switch in circuit with said electromagnetic means; a device on the carriage for closing said open switch as the carriage approaches said predetermined position to cause the electromagnetic means to prevent release of the locking device from the total key; and means controlled by the tabulating mechanism to open said second switch during tabulating movement of the carriage and hold said switch open until the carriage has stopped in said predetermined position, then releasing said opened second switch to complete the circuit to energize the eleotromagnet to cause the latter to depress the total key.

ARTHUR J. MOELLE N'BECK. HOWARD G. STAUFFER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,357,423 Robb Nov. 2, 1920 1,819,084 Ens Aug. 18, 1931 1,939,804 Christian Dec. 19, 1933 2,079,355 Lee May 4, 1937 2,084,445 Kottmann -I June 22, 1937 2,313,982 Williams Mar. 16, 1943 FOREIGN PATENTS Number Country Date 378,874 Italy Feb. 26, 1940

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