US2346265A - Zero printing and column spot - Google Patents

Description

April 11, 1944. TQQ'MEHAN ZERO PRINTING AND COLUMN SPLIT MECHANISM Filed Dec. :50, 1940 5 Sheets-Sheet 1 April 11, 1944. v T. o. MEHAN 2,346,265

ZERO PRINTING AND COLUMN SPLIT MECHANISM Filed Dec. 30, 1940 5 Sheets-Sheet 2 Jnzbenzo Tho-mas Qfffliunn A ril 11, 1944. To. MEHAN 2,346,265

ZERO PRINTING AND COLUMN SPLIT MECHANISM Filed Dec. 50, 1940 5 Sheets-Sheet 3 April 1944- T. o. MEHAN 2,346,265

ZERO PRINTING AND COLUMN SPLIT MECHANISM 'Filed Dec. 30, 1940 5 Sheets-Sheet 4 Jnzaanifior. 66

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Patented Apr. 11, 1944 ZERO PRINTING AND COLUIVIN SPLIT MECHANISM Thomas 0. Mehan, Park Ridge, 111., assignor to Victor Adding Machine 00., Chicago, 111., a corporation of Illinois Application December 30, 1940, Serial No. 372,290

6 Claims. (o1. 101-96) My invention relates generally to calculating machines, and more particularly to improvements in printing mechanisms particularly adapted for use in such machines.

It is an object of my invention to provide an improved printing mechanism for calculating and in which a preadjusted split arrangement may be readily rendered effective.

A further object is to provide an improved.

printing mechanism for calculating machines and the like in which is incorporated a simple and effective split mechanism which may be easily controlled.

A further object is to provide an improved printing mechanism for calculating machines and the like which is simple in construction, reliable in operation, and which may be economically manufactured.

Other objects will appear from the following description, reference being had to the accompanying drawings'in which:

Fig. 1 is a longitudinal sectional view showing i the keyboard, the accumulator, printing mechanism, and differential actuating mechanism the calculating machine;

Fig. 2 is an enlarged longitudinal sectional view of the printing mechanism, showing the parts in the positions assumed at the instant of making a printing impression;

Fig. 3 is a view similar to Fig. 2, showing one of the type wheels in the position assumed at' the instant of making an impression, while the other type wheel is in normal position;

Fig. !l is a fragmentary sectional view taken on the line 4-4 of Fig. 2;

Fig. 5 is a fragmentary longitudinal sectional view of the left-hand portion of the machine, showing the cams and linkage for operatingthe printing mechanism;

Fig. 6 is a fragmentary sectional view of the right-hand portion of the machine, showing the means for operating the type wheel restoring bail;

Fig. 7 is a view similar to Fig. 6, showing the type Wheel restoring bail;

Fig. 8 is a vertical sectional view taken from the left-hand side of the machine, showing the cam and linkage for operating the aligner bar;

Fig. 9 is a fragmentary sectional View taken from the right side of the machine, showing the linkage'of the right-hand side of the machine for operating the'aligner bar;

Fig. 10 is a fragmentary plan sectional taken on the line Ill-l0 of Fig. 1;

Fig. 11 is a perspective view of the type arm releasing sear member and associated split lever;

Fig. 12 is a transverse sectional view taken on the line I2|2 of Fig. 11; and

Fig. 13 is a timing chart of various machine parts. i

Amount set up, actuating accumulating, and

' printing mechanism view Referring to Fig. l, themachine incorporates a plurality of numeral keys 20 mounted for vertical reciprocation in a key guide plate 22 and guided for longitudinal movement by rods 24 extending'through suitable slots 25 formed. in the key stems. The keys are held in the normal po-' sition shown in Fig. 1 by coil springs 26which extend transversely of the machine through a transverse row of keys, the coil springs being adapted'to be flexed upon the depression of a key and thus returnthe key to normal position when it is released, as will'appear hereinafter. It will be understood that the ends of the springs 25 are anchored to the keyboard frame structure.

Each of the key stems is provided with a cam projection 28 of saw-tooth conformation cooperable progressively with a key latching slide 30 and a'key locking slide 32. Each of the key stems has an end portion 34 which, when the key is in depressed position, lies in the path of one of a plurality of stops 36 formed upon a stepped actuator bar 38. 'When' a key 20 is depressed, its projection 28 forces its latching slide 30 forwardly against the tension of a spring 451 so that when the key is fully depressed, the slide 30 will be pulled rearwardly and latch the key in'depressed position. The cam projection 28 also engages the locking slide 32, and through the latter, swings a ball '44 counterclockwise, the bail 44 carrying a hook arm 45 which engages a suitable stop on the stepped actuator bar :38. Thus, when the bail 44 is swung counterclockwise upon the complete depression of the key, the associated stepped actuator bar 38 will be released for rearward sliding movement under the influence of a tension spring 46, one end of which is attached to the stepped actua tor bar and the other (rearward) end of which i attached to a guide comb 48. The stepped actuator bar 38 is rigidly connected to an accumulator rack 50 which is guided for longitudinal movement upon a pair of rigid transverse rods 5| and 52 suitably supportedon the section frame plates 54 as well as by an angle comb 56 which maintains the rearward ends of the accumulator racks in properly spaced relation. Each of the accumulator racks is biased to move rearwardly by a tension spring 58, one end of which is suitably secured to the accumulator rack and the other end of which is anchored to the fixed comb 55.

A restoring bail 60 is guidedfor -transverse sliding movement in the center section plates 54 and extends through slots GI formed in the accumulator racks 50. It will-be understoodtha't during the initial portion of the operating cycle of the machine the restoring bail Iillwi'll be moved rearwardly and upwardly in thedirection of the slot 6| to the position shown in-Idotted lines in Fig. 1 so as to permit the rearward movement of the accumulator "racks under the influence of their actuating springs :58 .-as lim.

with a plurality of rack sections 62, 63, 64, 55,

and 66 for the operation of accumulators. In order to avoid unnecessaryduplication, only the master accumulator mechanism, which is operated through the. rack section {56, is illustrated in .Fig. .1, :it being understood that the lower accumulator mechanisms rmay be :provided for operation by: the rack-sections -62,*63,*64, and 65.

The master accumulator mechanism comprises a segmental pinion 63 which is ipeened zto a tubular hub 10 freely rotatable upon ahollow.

shaft 12. An arm '14 *isalso peenedto thehub I0. A segmentalgear I6 is "freely rotatableupon the hub -'I0-between the armfland'the segmental pinion 68 and is resiliently biased to move clockwise with respect :-to the farm 14 .by a -.tension spring :18. The extent oflmovementiof the segmental gear "H5 with .respect "to: the arm I4 andthepinion-fiii is limited by a lug 80 which extends sidewardly from the pinion 68 through a slot 8| formed in the segmental .gear I5. The segmental gear 15 has a sidewardly projecting stop lug 62 cooperable .with the hook-shaped encl-64 of-a transfer pawl 86 freely pivoted upon a shaft 68 and maintained in alinment by a fixed :comb :plate -90. The transfer ;pawl- 85 is normally held in the :positioninwhich it is shown in Fig. 1 by a locking dog '02 pivotedon a shaft 94 and maintained in alignment with the transfer .pawl :86 by an angle comb 1118138196, a tension spring 63 being provided to swing the looking dog 92 counterclockwise and the "transfer pawl '86 counterclockwise, thereby to maintain the ends of these elements'in engagement, as shown in Fig.1. :The masterzaccumu'lator comprises a plurality of subtract accumulator pinions I50 which are in mesh with-adding accumulator pinions I02, as well as with idler pinions I04, the :latter being in mesh with pinions I06 secured :to amount :indicatingwheels' 108. Adjacent to and secured to 'thersubtract pinions I MI and add pinions I02 are transfer cams II and I03 respectively, the high points of which are cooperable with a projection H0 formed on the transfer pawl 85. In the position shown, the master accumulator is in position for performing a subtract operation by virtue of the fact that the subtract pinion I00 is in mesh with the segmental gear I6. The pinions I00, I02, I04, and I 06 are mounted for free rotation upon shafts H2, H4, H6 and H8 respectively, these shafts "being suitably secured in a pair of inner frame iplates I20.

The details of the construction of the accumulator, the transfer mechanism, the means for causing engagement of the accumulator pinions with the segmental gears I6, and the means for shifting the accumulator pinions to locate the :add pin-ions I02 instead of the subtract pinions I04 for engagement with the segmental gears I6, are more fully disclosed in my copending application Serial No. 359,271, filed October 1, 1940, and my copending application Serial No. 372,289, filed December 30, 1940. For the purposes of the present application, the accumulator and the means for engaging it with these;- mental gears I6 may be of any suitable conventional construction.

The printing mechanism comprises a plurality of arms I30 freely pivoted upon a shaft I32 carried in the side section plates 54. Each of the arms I30 has a type wheel I34 freely pivoted on ashouldered rivet I 36, the type wheel having type faces "for the figures "0 to 9. Each of the type Wheels I34 is rigidly secured-to a pinion I38 whichis at all times in mesh with an idler'pinion I40fifreely rotatable upon a shouldered rivet I42 secured to the .arm I30. The idler pinion I40 is normally in meshwith its associated segmental gear I6.

"An aligner 'arm I44 is pivoted upon the rod I32 adjacent each of the arms I30 and has a toothed portion I45 at its end for engagement between the teeth of the idler pinion I40. The arm I44 is normally urged to swing counterclockwise'with-respect to its adjacent type Wheel carrying-arm I30 by a tension coil spring I48 which is stretched between a lug I50 forming part of the arm I44 and a notched ear I52 forming part of the arm I30. I

The arms I30 and I 44 for-the various denominational orders are maintained in properly spaced relation by a'slotted Z-shaped bar I54 forming comb portions I56 and I5'I, the bar I 54 being suitably secured in the side section plates 54. The ends of the actuators 50 are similarly spaced by the comb portion I5'I. The lower ends of the arms I30 and I44 are maintained in properly spaced relation by a stationary comb I58. The comb I58 also serves'as an anchorage for tension springs I60, each of which has one end secured to the comb and the other end secured to the depending portion I62 of an arm I30. A restoring bail IE4 is provided to return the type wheel carrying arms I30 to normal position, this bail being carried by a pair of arms I65-and I 66 which are pivoted upon the shaft I32 (Figs. 5, 6, and '7). The means for actuating this bail will be described hereinafter.

In alignment with each of the type carrying arms I30 is a type release member I68 which is guided in fixed slotted combs I10 and III for vertical movement. The member I68 has an elongated slot I'I2 formed therein to receive a transverserod II4 which is fixed in the inner section plates of the machine. The member IE8 is norder I82 which is adapted to engage beneath a depressing slide I84 which is mounted for gener-' ally downward movement in a pair of slots I85 formed in the inner section plates 54. The mechanism for operating the depressing slide I84 will be described hereinafter.

Each of the members I68 has a lever I86 pivotally secured thereto by a shouldered rivet I69. In Fig. 1, assuming the section as illustrating the hundreds denominational order, the lever I86 therein shown will not be pivoted to the member I68 which is'shown in this figure, but to the member I68 for the next or thousands denominational order. The lever I66 for th thousands denominational order is normally urged to swing counterclockwise on its member I68 by a tension spring I 88, one end of which is attached to a'projection I90 formed on the member I68 and the other endof which is attached to an arm I92 forming part of the lever I86. The lever I86 has a sidewardly extending lug I94 which normally overlies an oppositely directed lug I96 formed on the member I68. A partially punched stop I98 limits pivotal movement of the release lever I86 with respect to the member I68, since it projects into a notch I99 formed in the lever I86.

The lever I86 has a downwardly extending arm 266 which is adapted to be engaged by the sidewardly extending portion 202 of an arm 204 secured to a shaft 206 by means of set screws 268. As best shown in Fig. 4, the arm 204 may be adjusted longitudinally on the shaft 206 so as to have its end portion 202 in alignment with the depending arm 260 of any one of the levers I86, it being shown in Fig. 4 as being in alignment with the arm 200 of the thousands denominational order.

The shaft 206 is mounted for free rotation in the inner section plates 54, and at its end has an arm 2 I rigidly secured thereto, this arm having a key stem 2I2 pivotally connected thereto, the key stem bein urged upwardly by a tension spring 2! 4. A key button 2I6 is secured to the upper end of the key stem 2I2 and is provided with a notch 220 engageable with a suitable fixed stop 222 when the key is depressed, so as to hold the key in depressed position, permitting the ready release of the key merely by swinging it forwardly slightly to disengage its notch 220 from the fixed stop 222. When the key is depressed, it will be noted that the arm 204 will swing the lever I86 for the thousands order clockwise to cause its lug I94 to overlie the lug I96 on the member I68 of the hundreds denominational order so that whenever themember I68 for the thousands order is moved downwardly, it will carry with it the member I58 for the hundreds denominational order, and when the key 2I6 is released, the lug I94 will be moved to a position in which it cannot engage lug I 96, and the printing mechanism will be split between the hundreds and thousands orders, as will more fully appear hereinafter.

The levers i86, which are attached to the members I66 of all of the denominational orders except the thousand Order, are not provided with but instead, these levers are held in either position to which they may :be'moved by a detent portion 226. The detent portion 226, as best shown in Figs. 11 and 12, is bent sidewardly so'as to lie partially in the path of movement of the arm I92. This detent portion 226 may be bent back to its original straight position so as not in any way to affect the movement of the lever I86. when the lever is to have a spring I88 attached thereto.

The provision of this detent projection, which may be bent either to be ineffective or effective to-hold the lever I86 in either of its extreme po-' sitions, makes it possible for the service man= in which it is shown in Fig. 12 so as to hold the I lever I86 in the position at which its lug I94 overlies the lug I96 of the member I68 of the next lower denominational order. The spring 228 attached to such lever I86 may also be removed, although such removal is not essential since the springv is not sufiiciently powerful to overcome the holding effect of the detent portion 226.

The mechanism for operating the parts previously described comprises a main shaft 230 which,

as viewed in Fig. 5, makes one counterclockwise revolution during each operating cycle of the machine. A plate cam 232 is rigidly secured to a hub or tubular shaft 23!, in turn secured to' the main shaft 230, and is adapted to oscillate a forked arm 234 secured to a pivotally mounted shaft 236. arm 234 has a follower roller 240 thereon which is engageable with the edge of the cam 232. The forked arm 234 is pivotally connected to a link 242 which is slotted to receive'the endof the restoring bail bar 60. It will be understood that the shaft 236 extends transversely through the machine and that at its opposite end it'is provided with an arm similar to the arm 239 and a link similar to the link 242, to assure uniform translatory movement of the restoring bar 66.

The arm 238, carries a roller 244 received in an open end slot 246 formed in the end of an elbowshaped arm 248 which is secured to a shaft 250. The shaft 259 is provided for operation of the ribbon feeding mechanism, which is not disclosed herein, since it maybe of any conventional construction.

The hub 22H secured to the main shaft 236 carries a pair of plate cams 254 and 255 which are respectively cooperable with follower rollers 256, 251 rotatably mounted on the ends of arms 258 and 259 of a three-arm lever 260 pivoted upon a fixed stud 26I. The third arm 262 of the three-arm lever 266 carries a roller 264 which rides in an open-end slot 266 formed in an arm 268 which is secured to a rotatable shaft I32. Likewise secured to the shaft I32 so as to rotate therewith are a pair of arms 210, the ends of which engage rollers 212 attached to the arms I65 and I66, previously described. The rollers 212 project through suitably shaped arcuate slots a tension spring corresponding to thespring I88,"

He will do this merely by bending One of the arms 238 of the forkedproper interengagement of their teeth. Each of.

the arms 210 has a link 214 pivotally connecting the lever with a pivotally mounted bell crank 216. Each of the bell cranks 216 has a notch 218 formed at the end of the rearwardly extending arm thereof to engage one of the ends of the slide I84. Through this linkage the slide I84 will be lowered and raised once during each operating cycle of the machine.

Means are provided to align the segmental gears I6 just prior to the release of the type carrying arms for making a printing impression and after the accumulator racks have completed their rearward movement. This means is best shown in Figs. '8 and 9, and comprises a plate cam 280 which is secured to a hub 231 carried on the main shaft 236. The cam 23!! is rigidly secured to the cams 232, 254, and'255-byarivet 232 which may be surrounded bysuitable separator sleeve 283 to hold the cams in properly spaced relation. The cam 280 is cooperable with a follower roller 284 rotatably mounted at the end of one arm 286 of a bell crank lever 286 which is secured to a shaft 290 rotatably supported in the inner section plates 54. The bell crank 288 is normally swung counterclockwise by a suitably anchored tension spring 292 to maintain the roller 264 in engagement with the edge of the plate cam 280. The arm 289 of bell crank lever 288 is pivotally connected to a link 294.

At the right hand side of the machine, the shaft 290 has an arm 296 rigidly secured thereto and has a link 298 pivotally connected to the end of the arm 296, the link 298 corresponding to the link 294. An aligner bar 300 is mounted for substantially vertical sliding movement in a pair of slots 302 formed in the inner section plates 54. The cam 280 thus swings the bell crank 268 clockwise (and the arm 296 counterclockwise), thereby to lower the aligner bar 300 into a position in which it engages between the teeth of the segmental gears I6 and holds these gears in properly aligned position so as to assure proper reengagement of the idler pinions I40 with the segmental gears when the type carrying arms are returned to normal position after making a printing impression.

The operation of the mechanism above described will be more clearly understood by refer.- ence to the timing chart of Fig. 1'3, in which the particular phase angle of the main shaft 230 from its, normal position is indicated as related to the functioning of the various mechanisms.

In describing the operation of the machine, it will be assumed that the lever I36 attached to the member I68 for the thousands order is equipped with the spring I88 and that the arm 204 is secured in the position in which it is shown in Fig. 4. It will also be assumed that the remaining levers I86 are positioned so that their lugs I94 overlie the lugs I96 of the members I68 of the adjacent lower denominational orders, the levers I86 being held in this position by the detents 226.

Assuming that the amount keys have been depressed to set up the desired amount in the keyboard, the operating cycle will be started, either by operation of the usual motor control switch or by manually rotating the main shaft 230. During the initial portion of the'operating cycle,the arm 234 (Fig. 5) will commence swinging. counterclockwise due to the depressed portion 233formed in the cam 232. Such movement will cause the restoring bar 60 to move rearwardly a distance corresponding to the rotation of the segmental gears I6 through an angle slightly greater-than that represented by the pitch of the teeth on these gears. This slight counterclockwise movement of the'segmental gears I6 willpermit 'restorationof such of the transfer pawls 86 which had been operated duringthe preceding cycle to effect a transfer operation. As shown on the chart-Fig. 13, this rearward movement of the restoring bar '66 and accumulator racks takes place during the first 36 of angular movement .of the main shaft 230. During the following 21 of the main shaft rotation, the cam 232 will swing thelever 234 clockwise (Fig. 5), and thus move the restoring bar 66 to normal position. After a short 'dwell period, the sharp drop portion of the surface of the cam 232 will reach the roller 240, and as a result, the arm 234 will again be moved counterclockwise to move the restoring bar 60 rearwardly and thereby permit such of the'actuator racks as have beenreleased to bemoved rearwardly until arrested by the'engagement of the lugs 36 with the ends of the depressed keys. I

After the accumulator racks have thus been positioned in'accordance with the amount set up on the keyboard, the accumulator pinions I00 or I02 (depending whether a subtracting or adding operation is to be performed) will be brought into engagement with the segmental gears I6 so that upon the following return stroke of the actuator racks, the amount set up may be added in to the accumulator. The type wheels I34 being effectively in mesh with the segmental gears 76 during'the rearward movement of the actuator racks 50 will, of course, be set to imprint the amount set up in the keyboard.

Each of the racks 50 which is released for rearward movement'due to the fact that a key in its -denominational order has been operated will, in

moving rearwardly, displace its stud I80 from the position in which it is shown in Fig. l rearwardly asufiicient distance to permit the associated member I68'to swing clockwise to a position in '-which its shoulder I82 lies beneath the generally horizontal flange portion of the releasing slide I84.

At this point in the cycle, the aligning bar 300 is moved downwardly by the cam 28!! (Fig. 8)

"' operating through the bell crank 288 and link ltion in which it is shown in Fig. 2, while at the same time, the slide I84 will commence moving downwardly and pushing downwardly such of the members I68 as have been permitted to swing clockwise by the removal of the associated studs I80. Shortly after the type restoring bail bar I 64 reaches the position in which it is shown in Fig. 2, the slide I84 will have depressed the members I68 sumciently to cause their projections I to be moved beyond the ends of the depending por- Stions I62 of the type wheel carrying arms I30,

thereby releasing the latter for actuation by their respective springs I60 to swing the type to make the printing impression.

In the eventthat all of the levers I86 are in the position in which such lever is shown in full lines in Fig. 1, all of the members I68 to the right of the highest order digit in the amount set 'up will be pushed downwardly upon downward movement of the slide I84 because of the series overlapping relationship of the lugs I94 and I96." For example, if the amount 6 6 6 1 2 is set up due to the overlapping arrangement of the lugs I94, I96, will also depress the members I68 for the tens of thousands, thousands, and hundreds denominational orders. The members I68 for the tens and units orders will, of course, be moved downwardly directly by the slide I84, since these members will have been swung rearwardly to cause engagement of their shoulders I82 with the slide I84.

If, however, the key 2I6 is moved forwardly to release its notch 226 from engagement with the stop 222, the spring 2 I4 will raise the key, and thus swing the arm 264 from the position in which it is shown in full lines in Fig. 1 to the position in which it is shown in dotted lines in said figure. As a result of such movement of the arm 264, the lever I86 in alignment with this arm, which will have a spring I88 attached thereto, will swing from the full .to the dotted-line position of Fig. 1, thereby moving its lug I94 from its position above the lug I96. Under these circumstances, with the given example of the amount set up in the keyboard, the machine would print 6 6 0 1 2. In addition to the split between the thousands and hundreds orders, a split may be efiected between any other orders merely by manually swinging counterclockwise the levers I86 located in the higher of the two orders between which the splits arevto be made.

Due to minor irregularities in thedimensions of the parts, the depending portions I62 will not be released from the projections I96 of the members I68 at the same instant, and as a result, the type will not strike the platen at the same time. The amount of noise produced by the type striking the platen will therefore be considerably reduced as compared with other constructions in which the type are swung asa unit against the platen. T

After the type have fired, the bail bar I64 will commence swinging forwardly, and the slide I84 will commence moving upwardly, and after the idler pinions I46 have thus been returned to engagement with the segmental gears I6, the aligner 366 will commence 'moving'upwardly by virtue of the rise portions on the cam I86.

After the algner bar 366 has been disengaged from the segmental gears I6, the accumulator I82 of the member I68 associated readily merely by swinging 5 a split in a particular location merely by releasing the key 2'6 and that if it IS desired to Split the machine between some other denominational orders, such splitting may be accomplished very the particular lever I86 counterclockwise, the levers I86 being, of course, held in either of their'extreme positions by the detent portion 226.

Furthermore, it will be noted that the sear members I68, together with the split levers I86 pivoted thereto form a simple mechanism and perform numerous functions, namely, determining which type arms I36 shall be released, including the release of the zero printing type arms,

releasing the type arms, and providing-a simple means for effecting a split in'the printing mechanism, controlled either by the key -2I6 or byindividual adjustment of thesplit levers I86. While I have shown and described a particular embodiment of my invention, it will be apparent to those skilled in the art that numerous variations and alterations may be made without departing from the underlying principles of my invention. I therefore desire, by the following claims, to include within the scope of my invention such variations and modifications as will readily occur to those skilled in the art by which substantially the results of my invention may be obtained by the use of substantially the same or equivalent means.

I claim: I

In a printing mechanism for calculating machines and the like having a plurality of differentially movable actuators, one for each denominational order, the combination of a platen, aplurality of arms each carrying type differentially positionable by said actuators and cooperable with said platen, resilient'means individual to each of said arms to urge it to swing is type toward said platen, a sear member for each of said arms normally preventing it from swinging toward said platen, an operator for moving said sear members to type arm releasing position, means rendered effective by said actulever is in normal position and ators respectively to cause engagementof said sear members with said operator, a. isengageable operating connection between eaclr sear of the next lower denominational order when the being movableito split position in which said portion doeslnot overlie said lug, and means to hold said lever alternatively in its split or its normal position.

" 2. In a printing mechanism for calculating machines and the like having a plurality of difactuating racks 56 will be moved forwardly by the restoring bar 66 to normal position. During the forward movement of the actuator racks 56, the accumulator pinions I66 or I62 will be in mesh with the segmental gears I6 to efiect the subtraction or addition of the amount set up. As the actuator racks 56 reach their normal position, they will engage the upper ends I18 of the members I68 and swing the latter forwardly to release the shoulders I82 thereof from engagement beneath the flange on the slide I84.

From the foregoing, it will be apparent that the machine may readily be adjusted to effect ferentially movable actuators, one for each dep i ing. a lugo r; saidsear member a lever; pivoted to said member, saidlever having a portion overlying-the lug on, the searmemberof the next lower denominational order whenthe lever isin normal positionand being movable to split position in which said portion does notoverlie said lug, a key, and means operatedby said, key, to move said lever from its split, to its normal. position. r

3. In a printingmechanism for calculating;ma-

chines and the likehavinga pluralityoi differsaid arms normally preventing. it from. swinging toward said platen anoperator for moving said sear, members to type arm releasing. position, m ans en e ed efiectiveby. said actuatorszrespeotively to cause engasementofzsaid sear members with said operator, a -disengageable, operating connection between,each sear member. and the sear member of the. nextlower denominationel r er, s i disengageable, connection. comprising alug on. said ,searmember, alever pivoted to sai mem er, said levennaving a.- portion overlying the lug on the sear memberoiithanext lower denominational order when the lever is. in normal position and. being. movable .tosplit. position in which, saidportiondoesnot. overlie said lug, a spring *conneetedbetween,said .lever and said member to, move, said. lever to, split position,

- with. said platen, resilient means. individual to a key, and means operated by. said keyto move said l ver to nor alr sitionagainst, theiorce of said spring 4. In a printing meohanism foncalculatingmachines and the like, having a plurality of differentially movable actuatorsone, for each denominational orden tha combinationof a platen, a plurality. or" arms each carrying type differen: tially positionable bysaidactuators and coopereable with said platen, resilient means individual to each of. saidv arms to urge it to swing, its type toward said platen a sear member for each of said arms normally preventing it from swingin toward said platen an operator for moving. said sear membersto typearm releasing position, means rendered effective by v said actuators re-v spectivelyto cause engagement of said sear members with, said operator, a disengageable operat ing connection b'etweenleach sear member and the sear member of thenext lower denominational order, "said 'disengageable connection comprising a lug on said sear member, a, lever pivoted to said'member, said lever having a portion overlying the lug on the sear member of the next lower denominational order when the lever is in normal position and being movable to split posimachines and thelikeharingap urality Of'difierentially movable actuators; one, for each denominational order, the combination ofa platen, a plural tyoi arxnseachv carryin type differentially positionable. by: said: actuators and;cooperab1e each, Qf; aid. minds: to urge. it .to: swing; its type towardsaid. platen, asean member. for each. of s i arms normally: preventing it. from swingme toward. seidnplat n, an operator for movin Said, .sear. members to. type; arm 1 releasing; position, .means.. rendered. effective-by; saidzactuators .resnectiyely. to cause}. engagement. oi: said sear members with saidioperator, adisengageable operating. connection; between each sear: member andztheisealtr member of .the, .nextlower. denominational o.rder;.. said: disengageable; connection comprising a lug on said-.seanmember, .a-lever Divotedoto,saidmember, said lever havingaportion overlying the lug. on .theseanmember of. the nextilower. denominational. order .whenithei lever is in-.,normal.position and being movabletto rsplit position in which saidzportion doesnotloverlieisaid lug, a i key, a. shaft. movable by. said key, and. an e ementadjustable-along saidsshaftto engage/any one of saidlevers to; move thelatter-iromone of itsnsaldv positions .to the i other; upon movement of said sbaitbysaid. key..

6...- Inia, printing. mechanism for. calculating machines andithe like having a plurality. Oren;- ferentiallyi. movable. actuators, one for each .denominational order, the combinationoi aplaten, aplurality otzarms; each carryin type. different tially ,positionablaby said actuators and cooperable iwitnsaicbplaten resilient means individual to; eachoisaidzarrns. to) urge it.-to, swingv itsitype toward; said-i platen, asear member for each of said. armstnormally preventing it from; swinging towardsaid .platen, ,.an. operator for moving said sea-r1 membersoto, type. arm releasing DDSition, means rendered effective .by saidv actuators re-- spectively to cause engagementofisaid sear members...-with saidioperator, adisengageable operat ing -,.connection-lbetween ea'ch sear. member. and the.;..sear;.member; oi the next. lower 1 denominationaliorder, saidrdisengageableconnection come prising a: slug on said ;sear member, a-..leveri pill-- oted to said member, said lever havinga portion over yinatheilug on the searmember of: .thenext lower denominational. .orderwherrthe. lever i'sin. normal positiongandzbeing movable,to.sp1it osi= tion in .whichsaidportion :does not :overlie said lug, and lieyecontrolled .means; determining. the; positionioisaid leveri

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