US2298201A - Listing calculator - Google Patents

Description

06f. 6, 1942. p. CROSMAN 2,298,201

LISTING CALCULATOR Filed Oct. 18, 1938 6 Sheets-Sheet l 3mm/dov Lok/NG CEOs/m4n,

Oct. 6, 1942. x.. P. cRosMAN 2,298,201

LISTING CALCULATOR Filed Oct. 18, 1938 6 Sheets-Sheet 2 me/who@ LOE/NG f. CeosMA/v,

Oct. 6, 1942 L. P. cRosMAN LISTING CALCULATOR Filed Oct. 18, 19158 6 Sheets-Sheet 3 me/Wto@ LOE/NG P C/eosM/Q/v,

Oct. 6, 1942. L P. cRosMAN LISTING CALCULATOR Filed Oct. 18, 1938 6 Sheets-Sheet 4 Imam/bolo LOE/NG P C/aosMA/v,

flmmm Oct. 6, 1942. 1 P. CROSMAN LISTING CALCULATOR Filed oct. 1a, 1938 s sheets-sheets gmc/who@ Log/NG P CEOs/MN,

0d' 6, 1942- L. P. cRosMAN 2,298,201

LISTING CALCULATOR Filed Oct. 18, 1938 6 Sheets-Sheet 6 LOE/NG /.D 020s/wmv) Y @3M @.CUMMAM Ffm l www Patented Oct. 6, 1942 UNITED-STATES PATENT OFFICE LISTING CALCULATOR Loring Pickering Crosman, Maplewood, N. J., assignor to Monroe Calculating Machine Company, Orange, N. J., a corporation of Delaware Application October 18, 1938, Serial No. 235,673

3 Claims.

The invention has relation to listing calculators wherein means are provided for accomplishing the registration of true negative totals, an object of the invention being to provide certain improvements upon the machine of the Patent Number 1,915,296, issued to Loring P. Crosman, June 27, 1933, whereby the machine may be brought to a stop prior to the printing of said totals and the operator having been made aware that the total represents an overdraft, may either print the true negative total on the statement sheet or on a separate sheet of paper or may arrange for clearing the total from the accumulator without printing; or alternatively the operator may print a total which is supposed to be negative without interruption of the total taking operation.

The invention consists in the novel construction and combinations of parts as hereinafter set forth in the claims.

In the accompanying drawings,

Figure l is a transverse section of the machine showing the registering and printing mechanisms.

Figure 2 is a transverse section of the machine showing the clutch control mechanism, etc.

Figure 3 is a side elevation of the machine showing the total printing mechanism.

Figure 4 is a detail side -view of the total latch control devices.

Figure 5 is a detail side view of the negative total control devices.

Figure 6 is a detail side view of/the control devices for locking the segment stops.

Figure 'i' is a detail side elevation of the total n in position for accomplishing the tripping of the total segment latch following an interval of stoppage ol the machine.

General operation For cach denominational order, the machine is of each lever 610 terminates in a segmental registering rack, the rearward arm has a lister type bar 611 pivoted thereto, and the upper arm has a\"piv0tal.\cgnnection with a differentially movable toothed member or stop bar 615, cooperating with a column `of digital keys 215, one column for each said order.

The digital keys 215 which have been depressed to represent a value, are latched in depressed position by slide plates 216, the lower ends of the key stems lying in the paths of movement of the related teeth of said bars S15, thereby allowing said bars t0 advance a distancecorrespending to the values of said keys, upon-operation of the machine. Depression of a digital key will also remove a column latch 214 from the path of movement of its related bar 615, these latches preventing movement of a stop bar S15 and a lever 610 in any column in which no digital key is depressed.

A rock shaft 301 is provided with cam means for governing the movement of a spring-tensioned rocker frame G16, mounted on shaft 608, said frame 61S carrying a series of dogs 611 normally engaged by studs 65S of the levers 610. As shaft 301 is rocked forwardly, the frame S16 will be rocked, and any of the levers S10 which have been released by the depression of digital keys will be allowed to rotate under the influence of their springs 683, until they are stopped by the related teeth of the bars S15 contacting the stems of the keys. Upon rearward movement 0f the shaft 301, the dogs S11 will return the operated levers S10 to normal position.

This excursion of the levers S10 serves to register amounts set in the keyboard upon one or more accumulators and to set up a similar amount on the printing line of the type bars.

These accumulators are shown in Gardner Patent No. 1,867,002, as means for storing positive or negative totals tobe printed. Tens carry mechanism is provided in accord with the disclosure of Gardner Patent No. 1,828,180.

Motor drive means The shaft 301 is oscillated' by means of an electric motor 100, connected through gearing 101 t Fig. 2) and clutch. means witha crank member 105, the latter being connected to an arm 316 with shaft 301 by`means'of a connecting rod 108. so that as crank arm 105 is rotated. thc shaft 301 is oscillated.

Clutch lever |06 is provided with an insulated roller adapted to close certain contact members after lever |06 is moved out of restraining engagement with the spring element of the clutch, (see Fig, 3 of the Crosman Patent No. 1,932,013). 5 These contact members constitute circuit breaking devices in the electrical connection of the motor |00. I

Spring tends to pull lever |06 away from the clutch, said lever being normally heldin posil tion to render said clutch ineiective by means of a latch H2. The clutch is disclosed in the Crosman Patent No. 1,932,013.

To establish the drive, latch |2 being released as will be hereinafter described. clutch lever |06 la will be moved by its spring to render the said clutch eiective, and said Contact members will be engaged to thereby start the motor. Latch H2 being ireleased will return under spring tension to latching position, and towards the end 2o of the cycle of motor operation, an arm ||5 of crank member |05 will contact a tooth ||6 of clutch lever |06 and thereby force said lever back to latching position and bring the lower end of said lever into the path of movement of a. member of the aforesaid clutch to render the latter inelective.

The above described excursions of the actuator levers 6|0 will effect positive or negative registration of values set up in the keyboard as disclosed in the Gardner Patent No. 1,867,002.

Total printing A total is taken by releasing the differentially movable elements or stop bars 6|5, the latter be- 35 ing then spring actuated to rotate the accumulators subtractively until suitable shoulders on the accumulator wheels contact with' 0 stop members. This will set up the total in the type bars and the hammers will be tripped to print 40 the total.

The machine is set for subtractive operation etc., upon depression oi.' total key 218, as disclosed in said Crosman patent, first named.

Depression of the total key 218 (Fig. 3), will 45 not only trip the column latches 2|4 (Fig, 1), through pin 263 and clearout ball 221, but will also trip a latch 62 0, through operation of crank arm 236 of shaft 206, arm 229 and control lever 62|, pivotally connected to said latch. The latch 50 620 normally engages a lug 621, of total segment 6|8, thereby preventing movement of said segment under the influence of its spring 68|. Upon tripping of said latch 820, total segment 6|8 will operate a shaft 601 (Fig. 1), having a helically 55 arranged row of pins, acting to trip the latchlng dogs 6 1 mounted on frame 6|6, successively from right to left of the machine, releasing certain stop members 6|3 so that the latter will fall into the paths of the 0 stops 451 of the accumulator 60 wheels and also releasing the studs 559 0I and the actuator levers 6 i0, as disclosed in the Gardner Patent No. 1,867,002.

When this zeroizing operation has progressed' to the left hand side of the machine, a rearward- G5 ly etending arm of total segment 6|8 will contact a projection of rod |30 (Fig. 3), having con nection with trigger |3|, to move said rod downwardly, thereby releasing the latch ||2 of clutch lever |06 whereby the motor clutch is rendered 70 e'ective and the cycle of motor operation is started.

The machine being thus started, the oscillatory frame sie (Fig. 1) wm carry the dogs en downwardly and said dogs will snap under the 75 studs 65S of the actuator levers 6| 0. The printing hammers will now be tripped in known manner, if the total is a positive value, and upon rearward movement of said frame BIB, said actuator levers will be restored to normal position.

Negative totals In making a total, amounts carried up to the accumulator wheel located to the left of the keyboard are `transferred to the printing devices by means of a two-armed lever |40 (Fig. 5), similar to the levers Gli] but having no connection with the keyboard. This lever |40 is normally held inactive by latch |4|, which in total taking is tripped by a nger |42 on the shaft 601 controlling the successive release of the said levers 6|0. If the total is negative, the complemental registration in the accumulator will include a nine in the above mentioned left hand wheel, and the movement of lever |40 from eight to nine printing position is utilized to set the true negative total devices in operative position The method of converting the complement of a true negative total, set in the type bars, to the true negative total is as follows:

A set of stops |43 (Fig. 1) yieldably engaging the stop bars 6|5 are locked in position as adjusted thereby in accordance with the complemental registration during a. total taking operation and the actuator levers 6|0 are restored idly to normal position. Said levers 610 are now again released and will be stopped by the stops |43,the accumulator being meshed during this subtractive stroke of the said levers, whereby the complement is subtracted from zero, giving a registration of the true negative total. The said levers 6|0 are again restored idly to normal po- ..sition by a cycle of operation of frame 6|6, and

the stops |43 are released, so that a second zeroizing operation will now transfer the true totalto the type bars. 'I'he printing of the total, which' normally occurs at the end of the rst total setting operation has in this case been delayed, and will occur after the true total is set. These operations include three cycles of motor operation and two total setting actions of total segment 6|8. l

In moving from eight to nine printing position, lever |40 contacts with a latch plate |44 (Fig. 5) and moves the same out of engagement with an arm |45 of setting shaft |46, which latter will thereupon be rocked by spring |41. The rocking of shaft I 46 suspends the operation of the printing and normalizing devices as follows:

A printing operation is prevented during the conversion of the complemental amount on the totalizer by means of a spring actuated arm |48 which is released by the rearward movement of arm |45 and will thereupon engage a latch |43 of the hammer restoring bail 101, latching said bail in position to prevent printing operation of the hammers 1 5 (Fig. 5).

The release of the total'key 218 from its latch 223, (Fig. 3) is prevented by an arm |50 connected by link |5| with arm |52 of setting shaft |46, arm |50 being held in the rocked position of the shaft in engagement with a pawl 222 mounted on latch striker plate 220, so that said 'pawl may not be operated to. actuate latch striker plate 220 so long as setting shaft |46 remains in rocked position (see Crosman Patent No. 1,932,013). Total key 218 thus remaining latched in operative position, the subsequent operations will be of a subtractive nature, and the column due to said total latches 2|4 will remain inactive key remaining latched.

The latch |4| (Fig. 5) controlling the twoarmed lever |40, and the extreme left hand type bar, having been tripped in the total setting operation, is held out of latching position when the total is negative by a pivoted member |53, engaging beneath said latch, member |53 being oonnected by a link |54 with an arm |55 of setting shaft |46. Said lever |40 being free from latch |4| will operate to its extreme degree of movement in the subtractive true negative total-setting operation of the accumulator hereinbefore referred to, and will thereby subtract nine from the accumulator wheel Awith which it is engaged, whereby the subtractive carry transmitted to this wheel during this same operation will be erased.

The rst operation of the total taking mechanism under the influence of spring 68| has served to render the motor clutch effective for the purpose of restoring the actuator levers 6|0, etc. to normal position, and in order that a second cycle of motor operation may be secured, in which the subtractive operation of the accumulator will occur, the motor clutch will be maintained effective by means to be now described.

A latch arm |51 (Fig. 6), will be carried downward by shaft |46 out of engagement with a latching pawl |58 mounted on a plate |59, pawl |58 being held upward to permit the disengagement, by a second latching pawl |10. Plate |59 being released from the latch, will be drawn rearwardly by spring pressed member |60 (Fig. 3), and a lug |6| of plate |59 will engage lug |62 of the aforesaid link |30 '(now in its lower position), connected tc the aforesaid trigger |3| and holding the latch ||2 out of latching engagement with previously mentioned clutch lever |06.

In order to lock said stops |43 in the positions assumed during the preliminary total taking, the plate |59 is provided with a pivoted extension |63 (Figs. 2 and 6), which in the rearward movement of plate |59 is held under tension against the roller |64 mounted on the free end of one arm of an intermediately fulcrumed lever |65. The consequent relative movement of plate 59 and extension |63 will release latching pawl |58 from the restraint of the second latching pawl |10, the former pawl falling upon latch arm |51. The forward arm of lever |65 operates a locking bail |66, engaging serraticns of the stops |43, said lever being normally operated by a double faced cam |61 secured to armv3|6 of operating shaft 30|. As arm 3|6 moves forward, locking bail |65 is released, by the action of cam |61, while in the rearward movement of arm 3|6 the cooperating roller of lever |65 will ride the upper face of cam |61, whereby the locking bail is brought in contact with the stops |43. This will be the operation of the ,parts during the first cycle of motor operation which restores the actuator levers 6|0 to normal position. A's the rear endof lever |65 is lifted by cam |61 however in the return movement of the parts, roller |64 will be lifted free of extension |63, and said extension will immediately move under said roller, holding locking bail |66 in engaging position, where it will remain during the subtractive stroke of the second cycle of motor operation, that is to say while the levers 6|0 move the accumulator wheels subtractively from registering position to the extent allowed by the stops |43. At the end of this stroke, a pin |68 in arm 3| 6 will engage a seat |69 in extension |63 and move plate |59 and its parts will be held by latching pawl |58, moving into engagement with the shoulder of latch arm |51.

Plate |59 being moved forwardly, lug |6| thereof will be disengaged from lug |62 of link |30, whereupon tripper 3| will be restored to, latching position and the clutch will be rendered again ineffective at the end of the secondl cycle of motor operation and the machine brought to rest. The true negative total being now registered in the accumulator, the second total taking operation occurring in the final motor operation cycle will Y result in the printing of the true negative total.

extension |63 forwardly, in which position the 7 `rocker cam 3| 8 to rock In the disclosure of the Crosman Patent No. 1,915,296 the total latch 620 is controlled to initiate this second total taking operation so that the tripping of latch 620 for the second time is delayed until the completion of the second motor operation cycle and at the end of said cycle the push rod |35 will be automatically actuated by plate |34 and trip said latch.

According to the present invention however the machine is brought to rest at the end of the second cycle of motor operation with the true negative total registered in the accumulator and prior to the printing of said total and there is no automatic tripping (forthe second time) of the latch 620 to initiate the final motor operation cycfe wherein the second total taking operation takes place.

'Ihus modification of the machine of said patent is requisite to eliminate shoulder |33 of rocker .plate |34 and automatic tripping (for the second time) of latch 620, there being substituted therefor means including a manipulative device to be now described for tripping said latch for the second-time. The operator, having been made aware that the total represents an over-draft, may either print the true negative total on the statement sheet or on a separate sheet of paper, or may arrange for clearing the total from the accumulator without printing. (The latter by the use of the well-known non-print mechanism.)

To complete the taking of the total the operator will push rearwardly a lever fulcrumed at 2, this lever being adapted to trip the latch 620, so that the total segment 6| 8 will again be operated, said segment again tripping the latch I2 of clutch lever |06 to render the motor clutch effective, thereby effecting printing and final restoration of the parts to their normal positions.

Tripping of the latch 620 by manual lever is eifected as follows:

On the first total-taking operation, following the depression of total key 218, total segment 6|8 will rise from the position illustrated in Figure 7 into that shown in Figure 8, the lug 621 of said segment contacting a rear arm of latch control lever 62| and moving said lever so that the pin |32 thereof will be depressed and escape from the rear face of arm 229, whereupon the latch lspring 620' will rotate the latch and control lever to bring the pin |32 beneath arm 229.

During the forward movement of the cam 3|3 the total segment 6|8 will be restored to normal position by means of a slotted link 6I8' pivoted upon said segment and engaged by a pin 3|8 fixed in the cam 3i8.

During this movement of segment 6|8, lug 621, which is formed as a slide mounted upon segment 6 8 and held in normal position by spring tension, will snap under the end of latch 620, bringing the parts into the position illustrated in Figure 9.

Thus the machine is brought to rest with pin |32 in a depressed position, and a nger I4, pivoted at |3 upon lever I| eccentrically of the fulcrum I2 thereof is brought into a raised position, in which position manipulation of lever II will bring said-finger into Contact with pin I 32 to trip the total segment latch as stated. Finger I4 is brought into this raised position as follows: `A member |13 (FigA 4) is pivoted upon arm |12 of shaft |1|, said member lying normally between rocker cam 3I8 -and push rod |35. Shaft |1| is rigid with plate |59, and, as said plate moves rearwardly at the end of the first totalsetting operation, pivoted member |13 will be carried out of register with rocker cam 3| 8, so that, upon the subsequent return of said cam to normal position, push rod I 35 will not be operated. During the subtractive cycle of operation, however, plate |59, being restored to normal position by pin |68 and seat |69, pivoted member |13 will be restored to position beneath rocker -carn 3|8, and at the end of this cycle the push -rod |35 will rock lever |34.

Rock lever |34 is connected with finger I4 by a pin and slot connection I5, so that the rocking of said lever will raise the rear end of finger I4 to a position opposite the depressed pin |32. Operation of lever I| by the operator will thus bring finger I4 into contact with pin |32 and will displace latch 620 from contact with lug 6 I 1, releasing total segment 6 I8.

I ',Ihe depression of push rod |35 is utilized to restoresetting shaft |46 to normal position. For this purpose shaft |46 is provided with an arm |15 carrying-the pawl |16 which, as shaft |46 is rocked forwardly is held by spring -|11 in contact with a shoulder |18 of push rod |35. As

the rod is moved downwardly, pawl |16 and arm |15 will rock the setting shaft back to normal position.v Setting shaft |46 and the parts controlled thereby being restored to normalposition, the tripping of` total latch 620 will effect an ordinary total-taking operation.

Should the operator desireto print a total which he supposes to be negative, without interrupting the total taking operation, lever |I may be manipulated to its rearward position either before or immediately after depression of total key 218, and .is manually so held during the first 'two cycles of operation. Thus nger I4 will be positioned as illustrated in Figure l0, until rock lever |34 is operated at the end of the Second cycle of operation. This operation of rock lever I 34 will bring a rounded or carnshoulder I4 of finger I 4 upwardly against pin |32, camming said pin rearwardly and thus releasing total segment 6|8.

It will be obvious that this invention is readily applicable to registers wherein means are provided for accomplishing the registration of true negative sub-totals, as in the Fleming Patent No. 2,050,320.

I claim:

l. In a listing calculator, means for accomplishing the registration and printing of ltrue negative total values. comprising a spring-urged device. a latch therefor providedwith a control member. means including. a total key for engaging said control member to trip said latch. means for restoring said spring-urged` device and said latch, and means for tripping said latch for the second time including a power driven device, a manipulable device. and a member positionable by either device and operable by the other device to engage said control member and thereby trip said latch.

2. In a listing calculator, means for accomplishing the registration and printing of true negati-ve total values, comprising a spring-urged device, a latch therefor provided with a control member, means including a total key for engaging said control member to trip said latch, means forrestoring said spring-urged device and said latch, and means for tripping said latch for the second time including a manipulable means and a power driven means, a part of said manipulable means being positionableby said power driven means. said manipulable vmeans thereafter being operable to engage said 'control member to thereby trip said latch.

3. In a listing calculator, means for accomplishing the registration and printing of true negative total values. comprising a spring-urged device, a latch therefor provided with a control member, means including a total key for engaging said control member to trip said latch, means for restoring said spring-urged device and said latch, and means for tripping said latch for the second time including a manipulable means and a power driven means, a part of saidmanipulable means being operable by said power driven means when said manipulable means is positioned, to engage said control member to thereby trip said latch.

LORING PICKERING CROSMAN.

CERTIFICATE oF CORRECTION. patent No. 2,298,201. october 6, 19m.

LORING PICKERING cRosMAN.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page l, second column, line 55 before "withl insert -`ast; page 2, second column, line 8, for "making" read -taking; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 10th day of November, A. D. 191i?.

Henry Van Arsdale,

(Seal) Acting Commissioner of Patents.

CERMFICATE or CORRECTION. Patent No. 2,298,201. october 6, 19m.

LORING PICKERING oRosMAN.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 1, second column, line 55, before with insert --fast; page 2, second column, line 8, for "making" read --taking; and that the said Letters Patent should' be read with this correction therein that the same may conform tlo the record of the case in the Patent Office.

Signed and sealed this 10th day of November, A. D. 191i?.

Henry Van Arsdale, (Seal) Act-ing Commissioner of Patents

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