US2147692A - Listing calculator - Google Patents

Description

Feb. 21, 1939.

L. P. CROSMAN LTSTING CALCULATOR 6 Sheets-Sheet 1 Filed March 9, 1935 @@@@@W@@@ @00000000 a @00000000 q @00000000 @00000000 u s @00000000 3:

@@o0000000@ h @00000000 @@O0@00000@ Q ggiw rfiunnnnnuinuflfifiuufii a pl ATToRmEY Feb. 21, 1939. L P, SMAN 2,147,692

LTSTTNG CALCULATOR Filed March 9, 1935 6 Sheets-Sheet 2 INVENTOR loring g Cnoarpa JW NEY Feb. 21, 1939. 1 P 5 2,147,692

LISTING CALCULATOR Filed March 9', 1935 6 Sheets-Sheet 3 INVENTOR PCr'osman ATTORNEY Feb. 21, 1939. CRQSMAN 2,147,692

LTSTTNG CALCULATOR Filed March 9, 1935 6 Sheets-Sheet 5 Wi 9. 9 XNVENTOR Z: O i PPnosmem M 04/ MAfiTTORNEY Feb. 21, 1939. L P. CROSMAN LISTING CALCULATOR Filed March 9, 1 935 6 Sheets-Sheet 6 INVENTOR LOfi/I 26/ 0; 311 I 9 m Patented Feb. 21, 1939 2,147,692

UNITED STATES PATENTOFFICE LISTING CALCULATOR Loring Pickering Crosm'an, Maplewood, N. J., as-

signor, by mesne assignments, to Monroe Calculating Machine Company, Orange, N. J., a corporation of Delaware Application March 9, 1935, Serial No. 10,270

7 Claims. (01. 235-60) The invention has relation to listing calculators Fig. 11 is a detail side elevation of parts reand more particularly to programme mechanism, moved from Fig 3.

whereby such amachine may be set automatical- Fig. 12 is a detail plan view of the non-add 1y perform a succession of different operations, splitting mechanism. in given sequence. In the machine illustrated, amounts set up on 5 The invention contemplates the provision of the digit keyboard 215 (Figs. 1 and 2) are acimproved means for selecting the desired accumucumulated in one or in both accumulators lators to be operated and/or for selecting the e the addit y y engagement of an eeeumil- Y character of the operation to be performed therelater du g the pw st or subtieetively on, in each ofseveral columnar positions of a by engagement thereof during the downward 10 transversely shiftable record carriage. A princistroke of reciprocatory actuating segments BIO. pal object of the invention is a provision of power The segments are reciprocated by movement of means for making such selections during the a reek shaft preferably driven by electric registering cycle of the machine. Other objects e er 00, S ee s t having a Cam 318,

of the invention will hereinafter appear. adapted to m v a r ck n frame a d there- 15 Theinvention consists in the novel construcby Coope at With t p s of e Segments tion and combination of parts as set forth in the t0 efieet m v h h extent of v appended claims. ment of each segment is limited by engagement The invention is shown as applied to a listing of a p 5|5 carried y e e e t. 'W th the calculator of the well known Gardner construclower e d o a dep y whereby this 20 tion, illustrated in U. S. Patent 1,867,002, issued extent of movement will correspond to the value July 12, 1932 to Clyde Gardner, deceased; as f su h d p ss d k yyp s Eli are modified by the disclosure of U. s. Patent 1,932,- n cted wi h he m n s 6" and are raised 013, issued October 20, 1933 to Loring P. Crosman. th r y t bring t app p at type to the The invention constitutes an improvement of the Printing line- Before the return of the adjusted 5 programme mechanism illustrated in U. s. Patsegments y the me Bi sprin type ham r ent 1,946,572, issued February 13, 1934 to Loring w be eased by trigg s L to Print the P. Croslnan. item on a. record sheet. inIlrilnttlllcenaccompanying drawings illustrating the Plus, minus and nomad; setting Fig, 1 1 a plan 1 of a listing calculator The accumulators!" are set to give the debodymg th i ti sired registration by means of two cam plates Fig. 2 i vertical section through the 9, HI (Fig. 3) pivoted in the frame at 420 and b d, accumulator and pr1nting.mechamsm 422, respectively, these plates cooperating with 5 Fig, 3 i a right side elevation of parts cams carried on the shafts 403 of the accumulamediately thi t casing of the machine tors. From the position illustrated in Fig. 3, the Fi 4 i left; side fi m of the machine cam plates 9, 2| are rocked toward each other with th casing removed by means of a rocker device 325, connected with Fig. 5 is a detail front view of the feelers and the cam Plates by members 322,321, and Operated associated parts, by cam arms 320, 3l6, fixed upon the rock shaft 40 Fi 6 i a d t i left side elevation of t 3M. Rocker device 325, as set for normal operacumulgtor setting g v and associated parts, tion, provides for movement of plates 9, HI toin position for setting th upper u l t for ward each other, as soon as the machine is put in addition. operation, and before the movement of segments Fig, 7 is similar i showing t parts in 6H). At the beginning of the return movement of 45 position for setting the lower accumulator in nonshaft 3M, rocker 325 will be operated in a reverse add position. direction, to return the cam plates 9, 42l to Fig. 8 is a similar view, with parts in position the position illustrated in Fig. 3 before the refor setting the upper accumulator in non-add turn movement of segments Bill is begun. Each position. of the cam plates 9, 421 is provided with two 50 Fig. 9 is a similar view, with parts in position cam faces, 452, 454, these cam faces being ofiset for setting the upper accumulator in subtract from each other transversely, and lying in differposition. ent circumferential angular positions. In the Fig. 10 is a rear elevation of the tabulatin position illustrated in Fig. 3, the cam faces 5 means for the record carriage. 52 of the plates are opposite the shafts 403, 55

whereas, upon movement of the plates by rocker 325, the cam faces 454 thereof will be brought opposite the shafts 403.

Each shaft 403 is provided with a cam 453, lying in the plane of the related cam-face 452, and a cam 455, lying in the plane of the related cam face 454. The shafts 403 may be held in either of three rotated positions, whereby the high points of cams 453 or 455, or the low points of both cams may be brought opposite the cam faces of the plates 4|9, 42I.

The shafts 403 are urged by spring means (not shown) away from the segments 6l0, suitable guides in the frame of the machine being engaged by said shafts. Thus, the shafts 403 will hold the accumulators 413 out of mesh with the segments 6l0 unless a cam face 452 or 454 is engaged by a cam 453 or 455, in which case the accumulator will be thrown into mesh with the segments.

It will be seen that the low point position of the cams 453, 455 provide a non-add adjustment for the accumulator 413. To set the accumula-.

tors for addition, the cams 453 are rotated to active position in which the accumulators will stand in engagement with the segments 610 when the machine is at rest; will be allowed to drop out of mesh with the segments as soon as the machine is put in operation and will be reengaged with the segments at the beginning of the return stroke thereof. It may be noted that the upper accumulator is set for addition in Fig. 3, the lower accumulator being set for non-add. To set the accumulators for subtraction, the cams 455 are rotated into the path of movement of the cam faces 454. When the machine is started, the rocking of plates 4| 9, 42! will bring the cam faces 454 in contact with the cams 455, and will move the accumulators 413 into mesh with the segments before said segments are released by the frame 5|6. Before the return movement of the segments has started, the plates 4l9, 42l will again be rocked, moving the cam faces 454 away from cams 455 and allowing the accumulators to move out of mesh with said segment.

All of the above-noted operations relate to normal registration, which is effected by depression of a normal operation key 4, which releases a latch I 13 from engagement with a spring impelled clutch control lever I06. The effect of the additive or subtractive settings of the cams 453, 455 may be reversed, by depression of a reverse operation key 214 acting to trip the latch H3 and to adjust the rocker device 325, as set forth in Patent 1,932,013, hereinbefore referred to. The settings are similarly reversed upon operation of the total key 218 (Figs. 1 and 6). This reversing adjustment of the rocker 325 provides that the plates 4I9, 42| shall remain in the position illustrated in Fig. 3 until the completion of the downward strokeof the segment 6l0 whereupon said plates will be rocked toward each other, and held in this adjusted position during the return stroke of the segments.

All of the above mechanism is substantially like that shown in Patents 1,867,002 and 1,932,013 hereinbefore referred to.

Control lever Two means are provided for rotating the shafts 403 and thereby setting the accumulators 413 for the desired registration, one of these means pro viding for a manual setting of the accumulators and the other for an automatic setting thereof by means controlled by the position of the record carriage.

The first named means comprises a control lever I, (Figs. 1, 4 and 6) fulcrumed in the frame at 2 and held by spring click 3 in either of five adjusted positions. These positions are indicated on the display plate illustrated in Fig. 1 by the letters B, Both, A-i-B, A, Car. It may be noted that the designation 'IT on the display plate does not relate to the control lever l and is of no interest in the present specification.

Fixed on the lever l are a pair of anti-friction rollers 4, working in cam slots 5 and 6 of a pair of segments 1 and 8, supported on a shaft 9. Segment 1 meshes with a pinion 414 which has universal joint drive connection (not shown) with the shaft 403 of the upper accumulator 413. Similarly, segment 8 meshes with a pinion 414 related to the lower accumulator 413.

With the lever I in its forward position, marked Car in Fig. 1, free movement is allowed of the segments 1 and 8, so that-said segments may be set by the programme mechanism hereinafter described. With the machine at rest and lever I so adjusted, the rollers 4 will be positioned in the tops of the arcuate portions of slots 5 and 6 (as shown in Figs. 6 and 7) and movement of lever I from Car to A position will bring rollers 4 into the radial portions of said slots, without imparting movement to the segments 1 and 8. In these two positions of the parts, the upper or A accumulator will be-set for addition and the lower or B" accumulator for non-add, as shown in Fig. 3. The next step of movement of lever I, to A+B- position will not result in the movement of the segment 1 related to the A accumulator, the related portion of the slot 5 providing for no camming action. B accumulator, however, is to be given one step of movement, by clockwise rotation of pinion 414, as viewed in Fig. 7, this movement being counter clockwise as shown in Fig. 3 (cam 455). In this adjustment, the roller 4 will lie half way down the cam portion of slot 6. At the position Both,

'A accumulator is still maintained in addition position and B accumulator given a second step of adjustment, into add position, roller 4 lying at the bottom of the cam portion of slot 6. The last step of adjustment of lever l, into B position leaves accumulator B in add position and gives a step of adjustment to accumulator A, the roller 4 contacting with the cam wall at the extreme end of slot 5 to effect this adjustment.

Programme mechanism For controlling the setting of the accumulators automatically, in accordance with the position of the record carriage, concentrically flanged disks l0 and H (Figs. 1 and 4) are mounted on the stud l2 supporting the spring drum l3 which carries the carriage shifting tape [4, these disks being rotated with the drum by means of a pin and slot connection 15.

For convenience, each disk may be made in two parts and assembled with the flanges l6 thereof extending toward each other, to form a pair of hollow cylinders secured in a single unit by means of bolts l1. Thus, the entire cylinder unit is slipped upon shafts l2 and secured by a nut H3. The flanges l5 of each disk are cut away at intervals to form perforations in the drums which may be entered by feelers l9 and 20, there being in effect two series of such perforations as will be obvious from an inspection of Fig. 1. The feelers l9 and 20 are loosely mounted on the shaft 8, and are of U shape formation, as seenin- Fig. 5, having inner arms 2!, 22 (Figs. 6 to 9) provided with angularly bent ends adapted to engage in notched seats of a pair of pawls 23, 24, pivoted at 25 upon the segments 1 and 8, respectively.

The feelers i9 and 28 are yieldably connected by means of spring pressed, notched arms 28 and anti-friction rollers 21 (Fig. 4) mounted on extensions of said feelers, with a cam plate 28 pivoted upon the shaft 8 and engaged by a roller carried at the end of an arm 28, secured to the rock shaft 38I. The cam slot of plate 28 is so designed that the initial forward movement of shaft 38i will rock the plate and through the yieldable connections 28 will rock the feelers i 8 and 28 about shaft 8, bringing the free ends of such feelers toward the center of the disks [8, ll.

When a flange l8 of a disk l8 lies opposite either one of the feelers, no appreciable movement of said feeler is allowed and the related segment 1 or 8 will be held in its normal Car position. If the flange I8 is cut away opposite one of the feelers, said feeler will be drawn by movement of the plate 28 through the opening in the outer cylinder and, should a flange i8 of the inner cylinder be in its path, it will come to rest in a second position, in which the segment 1 or 8 will be raised and the accumulator shaft 483 rotated approximately a third of a rotation. This position of the arm 2| of feeler I9 is illustrated in Fig. 8, the segment 1 having been raised and the pinion 414 rotated to set the upper or A accumulator into its second position. Should the flanges I8 of both cylinders be cut away opposite a feeler, the feeler will be drawn to its third or extreme position by the plate 28. The third position setting of the segment 1 related to the A accumulator is illustrated in Fig. 9.

Thus, upon reciprocation of shaft 38l, the feelers l9 and 28 will be carried toward the disks l8 and II, until stopped by the flange l8, or by reaching the limit of their movement. Upon encountering the flange l8, the connection 28, 21 will yield, and the feeler will be left in arrested position until the return movement of shaft 38l, when the notch of the spring pressed arm 28 will engage the roller 21 and carry the feeler back to its normal position.

By reference to the preceding description, it will be obvious that the three positions of the feelers will adjust the accumulators A and B asfollows:

When the control level I is moved out of its Car position, the segments 1 and 8 are disengaged from the feelers i8 and 28 by contact of the rollers 4 with cam extensions 38, 3| of the pawls 23, 24 (Figs. 7 and 8), rotating said pawls to move their notched seats away from the angularly bent ends of the arms 2i, 22,as seen in Fig. 4. Upon return of control lever i to its.Car position, the pawls 38, 3| will be rocked into their first described position by contact of the related roller 4 with an extension 32 of the pawl.

In order that the spring click 3 may not be left in a point to point contact with the teeth of said lever, an auxiliary locating lever 33 is provided (Fig. 6), normally movable with the click 3 by means of a spring and stop connection, said lever 33 being provided with a lug 34 lying in the path of movement of a pin 38 secured in the plate 28 (Fig. 4). Upon movement of plate 28 by shaft 38l, pin 38 will be carried against lug 34 and in case of a point to point contact of click 3 and lever l suitable lugs of the lever 33 will engage the locator teeth of lever I and'will force the same into a fully adjusted position.

Tabulation The tape I4 is secured to the frame ofthe record carriage at 38, whereby the drum l3 will move the carriage to the left, from column to column of the work sheet, as governed by a tabulator device.

This device comprises a tabular bar 31 (Fig. 10) mounted in the carriage and having a notched flange adapted to engage with the detent lug 38 of a compound lever 38. As shown, the bar 31 has a plurality of flanges, differing from eachother in the spacing of the notches, so that work of different sorts and record sheets with differently spaced columns may be accommodated. Bar 31 is rotatably mounted in the carriage, and may be flxed in any one of several rotated positions, to bring the appropriate flange into position to cooperate with the detent lug 38. Upon changing the adjustment of the bar 31 to bring a new notched flange into operative position, the disk assembly i8, Ii should be removed, and a new disk assembly inserted in its place, in order that the disks may be properly located by the tabulator device.

The carriage is released to effect the tabulating movement by means of a spring pawl 48 (Fig. 10) having a hook end adapted to engage over the detent lug 38. Pawl 48 has pivotal and sliding movement about a stud 4|, fixed in the machine frame, and normally lies in the retracted position illustrated in Fig. 10. During the operation of the machine, pawl 48 is raised to bring its hook end over the lug 38, by engagement of a spring latch 42, pivoted upon the pawl 48 with one arm of a bell crank lever 43, fulcrumed at 44 in the frame of the machine, as seen in Fig. 3. The other arm of hell crank lever 43 is engaged by a pin carried on a spring arm 45 (Figs. 3 and 11) engaging a plate 48 pivotally mounted upon a rock shaft 382, and connected to said shaft by a crank pin and lost motion slot. Shaft 382 is connected to rock shaft 38l by members 321, 324 and cam arm 3i8.

Upon rocking of shaft 381, shaft 382 will also be.

projecting portion of pawl 48 will be moved out of contact with a guide surface 45 of the frame. The rocking movement of pawl 48 about stud 41 will bring a pin of said pawl into contact with the latch 42 and will move said latch away from the bell crank lever 43, whereupon the spring 48 will move pawl 48 downwardly, thereby rocking the upper arm of lever 39 and disengaging detent lug 38 from the flange of bar 31.

Further downward movement of pawl 48 will bring the tooth portion thereof against the guide 45 and will move the hook end of said pawl out of contact with lug 38'.

The carriage, thus freed, will move to the left (to the right as seen in Fig. 10) the lug 38, upon release of the hook end of the pawl 40, being held by a spring 41 in contact with the lower face of the flange of bar 31,'so that it will move up into the next notch of the flange as the carriage reaches the next tabular position. Spring 41 also serves to retract lever 39 and thereby shift the lug 38 beneath the flange of bar 31, as soon as said lug is freed from the flange, so that the more sluggish movement of the carriage not relied upon to prevent 'reengagement of said lug with the same notch of the bar. This release of the carriage occurs during the latter part of the return stroke of the segments SID, and is effective after the return of the feelers I9, 20.

When the lug 38 is engaged by the flange of bar 31, the compound lever 39 will be moved slightly about its fulcrum 48, this movement being utilized to release an interlock, preventing movement of the clutch control lever I06 into clutch releasing position, so that the depression of a motor key will not start a new operation of the machine until the carriage has been located in its new position. This interlock is effected by a pivoted member 49, having a cam arm adjusted by the compound lever 39 and an extension 50, movable by said lever into the path of movement of the clutch control lever I06 (Figs. 3 and Selection of accumulator in total printing During non-programme calculation, when it is desired to print the total registered in one of the accumulators, the control lever I is set into A or B position, and the total key 218 is de pressed. The control lever will select the register from which the total is to be taken, and the parts controlled by the total key 218 will operate precisely the same in taking a total from A or from B accumulator. In the machine illustrated the accumulator to be totalized will be rotated to zero registering position and the type bars 6H appropriately positioned by spring means, after which the clutch will be engaged and a cycle of machine operation effected to print the total and restore the parts to normal position. Therefore, when operating the machine under control of the programme mechanism the movement of the feeler levers will occur too late to provide for the selection of the accumulator to be totalized. In other words, the preliminary rotation of the accumulator to zero must be in accordance with the controls which are active when the feelers are in their first position. This position, as above stated, will provide normally (when the machine is set for programme operation) for plus registration on A accumulator and for non-add in regard to B accumulator, but owing to the reversal of the setting of rocker 325 by the total key, the following cycle of machine operation above referred to will be subtractive with relation to A accumulator.

In order, therefore, that the accumulators may not be adjusted by the programme mechanism for operation according to an inconsistent sign when a total is taken, irrespective of the position of the record carriage, means are provided whereby the'depression of the total key 218 will limit the movement of the accumulator setting segments 1 and 8. As shown this will include the a selection of A accumulator to be rotated to zero, and it may also include the locking of segment 8 out of its highest position, only, since the intermediate position provides an adjustment of B accumulator into its normal subtractive position, in order that the total taken from accumulator A" may be added into or transferred to accumulator B", which will thus serve as a grand total accumulator.

For this purpose an arm fixed upon a crank rod 206 (Fig. 6) rocked by the total key 218 upon depression thereof, will contact with and adjust a U shaped stop dog 5|, provided with two hook ends (Figs. 6 and 7), bringing these hook ends into the path of movement of the arms 2|, 22 of the feelers. The hook end cooperating with arm 2| moves substantially into engagement with said arm as it rests in normal position, while the hook end cooperating with arm 22 moves to position sufliciently in front of said arm to allow feeler 20 to move into its second position. The total key 218 is held in depressed position until the end of the cycle of total printing operation, whereupon it is restored to normal position and the dog 5| will be released, when the pressure of the arm on rod 206 is allowed to return to normal disengaged position under the influence of a suitable spring.

Split printing ures on the record sheet and it is desirable in such printing to prevent action of the triggers ml in the two right hand columns, which lie below the decimal point in value printing,

whereby the printing of the decimal point will be avoided. In order to effect this splitting of the printing members when both of the accumulators are adjusted to non-add position by the feelers l9 and 20, a pair of latches 52 are provided (Figs. 6-9) normally engaging an arm 53 secured upon a rock shaft 54, said latches also being provided with toothed arms engaging pins 85 secured in the pawls 23 and 24. Rock shaft 54 is provided with an arm 55 (Figs. 2 and 12) engageable with one arm of a latch 56 forming a special connection between the trigger of the decimal point printing hammer 1 l5 and the next higher order trigger. In the normal position of the parts, latch 56 which is secured upon said higher order trigger underlies a laterally bent lug 51 of the decimal point trigger, to operate the latter in the same manner as the lug 103 of the other triggers. When shaft 54 is rocked counterclockwise as seen in Fig. 2, latch 56 will be displaced from beneath lug 51, so that tripping of the higher order triggers will not trip the triggers below the decimal point. (In Fig. 12 the right hand trigger Hll is not related to value type, but to type for printing various symbols.)

Therefore, upon movement of feeler l9 into its second position and upon maintenance of feeler 20 in its first position, both latches 52 will be removed from the path of arm 53. Thereafter, upon rocking movement of shaft 302, a .cam- 58 mounted upon said shaft will move awayfrom a operative position to effect the splitting. At the end of the operation, cam 58 will rock shaft 54 reversely and a suitable spring will move latch 56 back into engagement beneath lug 51.

Operation When the machine is to be operated under control of the programme mechanism, the control lever l is set into Car position, the record sheet inserted in the carriage, and an item set up on the keys 2 I 5 and the normal operation key I I4 is depressed. Depression of key H4 engages the clutch and puts rock shaft 3! in motion, whereupon, as a first step, cam arm 320, through the rocker 325 adjusts the cam plates 9, HI, and simultaneously the plate 28 is rocked by arm 29 on shaft 3! and the feelers I9, 20 are moved as far toward the center of disks III, II as is permitted by the flanges I6, thereby adjusting the cams 453, 455 of the two accumulators, to secure the desired operation. Further rocking movement of shaft 30! will allow the segments BIO to move downward, giving a subtractive operation in any accumulator which may be in engagement with such segments. The hammers H5 are now tripped, printing the item on the work sheet, after which the segments 610 are raised, effecting an additive registration upon any accumulator 413 which may be in mesh at such time. Near the end of the reverse movement of shaft 30I, detent lug 38 is moved out of contact with the notched flange of tabulator bar 31, and the carriage is moved toward the left, into the next column in which an entry is to be made, by means .of the spring drum I 3, this movement also setting up the programme mechanism for the succeeding operation. Finally, the clutch is disengaged,this clutch being of the well known type providing for an automatic disengagement after a single cycle of operation. The parts are now again in normal position, ready for the entry of a second item or the taking of a total.

I claim:

1. In a listing calculator, the combination with a transversely shiftable record carriage, an accumulator, and means for effecting and recording a registration; of carriage shifting means including a spring drum, differentially settable means for determining the character of the registration, and setting means including a circumferentially graded element mounted upon said spring drum, and a cooperating feeler element connected with the determining means.

2. In a listing calculator, the combination with a transversely shiftable record carriage, an accumulator, and means for effecting and recording a registration; of differentially settable means for determining the character of the registration, and setting means including a rotary element having a series of concentric, partially cut away cylindrical flanges, connections operable through the transversely shiftable record carriage to rotate said element, and a feeler element cooperating with the cylindrical flanges and connected with the determining means.

3. In a listing calculator, the combination with a transversely shiftable record carriage, an accumulator, and cyclically operated means for effecting and recording a registration; of differentially settable means for determining the character of the registration, setting means including a graded element adjustable through the transversely shiftable record carriage, and a cooperating feeler element, yieldable connecting devices between said feeler element and the cyclically operated means, releasable connecting devices including a latch between said feeler element and the determining means, and a device manually adjustable to release the latch and set the determining means.

4. In a listing calculator, the combination with a transversely shiftable record carriage, an accumulator, and cyclically operated means for effecting and recording a registration; of differentially settable means for determining the character of the registration, setting means including a graded element adjustable through the transversely shiftable record carriage, and a cooperating feeler element, yieldable connecting devices between said iecler element and the cyclically operated means, releasable connecting devices between said feeler element and the determining means including a segment provided with a cam surface and a latch carried by said segment and engaging the feeler element, and a manually adjustable device adapted to release the latch and provided with a roller engageable with the cam surface to set the determining means.

5. In a listing calculator, the combination with a transversely shiftable record carriage, an accumulator, cyclically operated means for effecting and recording a registration, and means cooperable with the registering means to take a total and including a total key; of differentially settable means for determining the character of the registration, setting means including a graded element adjustable through the transversely shiftable record carriage, and a cooperating feeler element, yieldable connecting devices between said feeler element and the cyclically operated means, releasable connecting devices including a latch between said feeler element and the determining means, a device manually adjustable to release the latch and set the determining means, and a stop adjustable by the total key into the path of movement of the feeler element.

6. In a listing calculator, the combination with a frame, a shaft mounted therein, accumulator wheels mounted upon said shaft, and cyclically operated means including reciprocatory segments for effecting and recording a registration; of means for determining the character of the registration including a cam on the register shaft, a cooperating cam mounted in the frame, connections between the cyclically operated means and the shaft and connections between the cyclically operated means and the cooperating cam, adapted to adjust both of said cams simultaneously relatively to each other, and means for regulating the degree of adjustment of one of said cams.

'7. In a listing calculator, the combination with a frame, a shaft mounted therein, accumulator wheels mounted upon said shaft, and cyclically operated means including reciprocatory segments for effecting and recording a registration; of means for determining the character of the registration including a cam ,on the register shaft, a cooperating cam mounted in the frame, connections between the cyclically operated means and the shaft and connections between the cyclically operated means and the cooperating cam, adapted to adjust both of said cams simultaneously relatively to each other, and thereafter to return said cams to normal position one after the other, and means for regulating the degree of adjustment of one of said cams.

LORING PICKERING CROSMAN.

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