US1951682A - Zero printing device for cash registers and calculating machines - Google Patents

Description

March 20, 1934.

A. VARREN ZERO PRINTING DEVICE FOR CASH REGISTERS AND CALCULATING MACHINES Filed July 6, 1931 3 Sheets-Sheet l March 20, 1934. A, VARREN 1,951,682

ZERO lPRINTING DEVICE FOR CASH REGISTERS ND CALCLATING MACHINES Filed July 6, 1931 3 Sheets-Sheet 2 March 20, 1934. A, VARREN 1,951,682

ZERO PRINTIG DEVICE FOR CASH REGISTERS AND CALCULATING MACHINES Filed July 6, 1931 5 Sheets-Sheet 3 Patented Mar. 20, 1934 UNITED STATES ZERO PRINTING DEVICE FOR CASH REGIS- TERS AND CALCULATING MACHINES Alexander Varren, Essen, Germany Application July 6, 1931, serial No. 549,015

In Germany 20 Claims.

This invention relates to such zero-printing devices the type-carriers oi which receive an additional movement produced by a special driving mechanism in order to bring the zero types into the printing line, and has for its object to perfect such devices in such a manner that each part of the device, at any time and without the use of springs, is positively held and guided. For this purpose, according to the invention, the additional movement is transmitted by turning members cooperating with the type-carriers, said turning members being journalled on pivots and, for producing the additional movement prevented from rotation about their pivots and in order to prevent additional movement, -are caused to carry out such a rotation.

By way of example one embodiment of the invention is illustrated in the accompanying drawings relative to a zero-printing device, in which the blank types of the type-carriers-in the normal position of the latter--are to be found in the printing-line and, for the purpose of bring- -ing about the zero printing, an additional movement inverse to the direction of the differential movement is imparted to those type carriers, which have to print zeros.

Of the said drawings,

Fig. 1 is a side View of the zero-printing device in which one of the side walls is omitted.

Fig. 2 is a top-view belonging thereto.

Fig. 3 is a section on the line IH--III' of Fig. l.

Fig. 4 is a perspective view of a turning member.

Fig. 5 is a detail side elevation of the device in the rest-and normal-position, respectively.

Fig. 6 is a like view in a numeral position.

Figs. 7 to 11 show details of the controllingmechanism.

Fig. 12 is a partial view of the type-carrier within the reach of the zero-types.

Fig. 13 is a timing diagram.

The type carriers 11 (Figs. 1 and 2) are loosely journalled on a shaft 12 mounted in side walls 10, 20 and bear numeral types 9 to 0 (Fig. 1) and a blank type showing an asterisk. The types are formed as a toothed gear 13, which continues beyond the type 0 with three teeth. An intermediate wheel 15 journalled on a rigid shaft 14 cooperates with the gear 13 and is constantly in mesh with its diierential member 16. The impression of the adjusted types is performed through the medium of a platen 17 arranged on a frame 19 pivoted on a rigid shaft 18, to which the printing movement is imparted in due time through an .arm 21, a pitman 22, and a roller 23 mounted thereon engaging a cam-groove 24 of a disc 26 fixed to a driving shaft 25. In order to adjust a type-carrierll to a numeral position the diierential-member 16 concerned is moved a corresponding amount to the left (Fig. 1), whereby July 14, 1930 the type in question comes Within the reach of the platen 17.

The controlling device for the zero printing is arranged on a shaft 27 journalled in the side walls 10, 20 above the shaft 12 and in each denomination consists of controlling members 28 (Figs. 3, 5, 6) disposed about this shaft and turning members 29 which are loosely mounted on a shaft 31 rigidly connected by arms 32 (Figs. 1 and 2), 33 (Fig. 2) to the shaft 27.

The type carrier 11 (Fig. l), the controlling member 28 and the turning member 29 together form a construction like a Geneva wheel gearing in which at certain periods one or the other of the members acts ,as driver. As shown by the detail View of Fig. 4, the turning member has the form of an eight-teeth gear wheel as such a wheel is applied in certain tenstransfer mechanisms. Each second tooth is cut away on a part of its length whereby locking notches 34, 35, 36, 37 (Figs. 4, 5) are formed. The teeth 65 and 61 belonging to the locking notches 35 and 36 are as Fig. 4 shows, provided with recesses 38, 40 the purpose of which will be explained below.

The controlling member 28 (Figs. 3, 5) which is formed asa sixteen-teeth wheel has in its gearing four diierent lateral zones. For facilitating manufacture, each lateral zone of the gearing is formed by a particular disc, that is a rolling disc 39 (Fig. 7), a locking disc 42 (Fig. 9),Ja distance disc 41 (Fig. 8) and a taking-with disc 43 (Fig. 11) The four discs are rigidly kept together by rivets and possess atl their lower parts four notches 45 (Fig. 5) which cooperate with four teeth 46 of the type carrier 11 of the denomination in question. To the right of them a locking face 47 is cut out, which cooperates with a counter locking face 48 of the type carrier. It is to be seen that if a type carrier is rotated counterclockwise out of its normal position represented by the Figures 1 and 5 into a numeral position, the controlling member-28 in question will make a rotation of two spaces and the counter locking face 48 comes into mesh with the locking face 47, (Fig. 6) and that the controlling member 28 remains locked inits new positioni. e. the numeral position, no matter in what a numeral position the type carrier in question may be.

Upon the back rotation of the type carrier 11 into the normal position also the controlling member 28 will be rotated back into the normal position. illustrated in Fig. 5. For securing this return a tooth may be disposed at the side of the locking face 48 for starting meshing. From the foregoing i further results that if a controlling member 28, being in the normal position, is rotated counter clockwise the corresponding type carrier 11, by the medium of the gear 45, 46, is rotated, too, in the direction of the arrow 30 (Fig. 1), the type Opwhich-as Fig. 1 illustrates-is arranged at the side of the blank type thereby arriving at the printing line. i

The shaft 27 (Figs. 1, 2) being, as explained, rigidly connected with the shaft y31, bears at the right hand end (Fig. 2) a toothed gear 49, which meshes with a toothed gear 51 (Fig. 1) of a driving lever 54 pivoted on a pin 52 of the right hand Wall 20. By means of a roller 55 the driving lever 54 engages a cam groove 56 (Fig. 2) of a disc 57 xed to the driving shaft 25 and receives from this in due time a swinging movement. In the course of the same the shaft' 31 assumes three positions illustrated in Figs. 5 and 6 by dash and dotted lines; the position designated R will be called the rest position, the position denoted by A the initial working position and the position denoted with E the final working position.

As Fig. Sfshows, the recessed four-toothed part of the turning member 29 cooperates with the locking disc 42 of its controlling member and the rolling disc 39 having but one tooth gap 58 (Fig. 7) and being, for the rest, full-toothed cooperates with the fulltoothed part of the turning member 29. Further, each turning member 29 (Fig. 3), with its full-toothed part, Vextends over the adjacent next lower controlling member 28 engaging the taking-with disc 43. The distance disc 4.1 (Fig. 8) with a part of its circumference projects beyond the controlling member and serves only as a means 'for keeping the turning members loosely mounted on the shaft 31 in correct lateral positions. Provided sufficiently exact manufacture these distance di-scs 41 may be dispensed with.

When the shaft 31 assumes its initial working position (position A, Fig. 5) and the type carriers 11 and controlling members 28 thereby being in their normal position in which an asterisk stands in the printing line, the locking notch 36 of the turning member 29 extends over a locking face 59 of the locking disc 42 (Fig. 9), whereby the tooth 61 of the turning member belonging to the locking notch 36 is to be found in a notch 62 (Fig. 7) of the rolling disc 39 of its controlling member and in a notch 63 (Fig. 11) of the takingwith disc 43 of the controlling member of the next lower denomination. Ifthe shaft 31 is rocked now into the position E, all turning members 29 will roll along on the controlling members 28, Without moving the latter till'they have reached their nal Working position (positionll) where they engage with their locking notches 35 locking faces-64 (Fig. 9) of the locking disc 42 (Fig. 9) of their controlling members.

In this position all controlling members 28 are locked against counter clockwise rotation by the teeth 65 of the turning members directed towards the shaft 27 and thereby, too, the type carriers 11 against clockwise rotation.

'Ihe locking of the controlling members 28 against clockwiserotation and the type carriers against counter clockwise rotation is caused by the first tooth 66 (Fig. 1) of the gear 13 of the type carrier 11, which abuts against a tooth of the intermediate wheel 15,-arrested by the differential member 16.

Now, supposed that one of the middle type carriers has been adjusted to a numeral position, for instance to the position 2 (Fig. 6), and afterwards the turning members 29 have been brought `into the initial working position (position A).

Here, in the position A of the shaft 31, the locking face 64isto belfound already opposite the locking notch 35 of the turning member 29 concerned the tooth 65 of which engages the tooth-gap 58 (Fig. 7) of its controlling member and at the same time the notch 63 (Fig. 11) of the takingwith disc 43 of the next lower controlling member 28 which is supposed to assume its normal position. If the turning members now are rocked'y into the final working position, the turning member in question will be kept non-rotatably about its shaft 31 by the locking face 64 and takes with it, through the medium of the tooth 65, the next lower controlling member 28 to the extent of two spaces, corresponding to the distance between two adjacent types.

As this controlling member is retained in its normal position as supposed, through the locking face 59 it is in mesh with the locking notch 36 of its turning member and this meshing is maintained, as the turning member by the shaft 31 and the controlling member by the just mentioned tooth 65 o the turning member of the higher denomination concerned are rocked along the .same angle. Consequently, the turning member of the next lower denomination whose tooth 61 engages the notch 63 of the adjacent lower controlling member will drive the latter, too, so that, in the described mode oi" construction, the zero types instead of the blank types will arrive at the printing line.

If in the lower denominations a type carriel has been adjusted to a numeral too, its controlling member itself will not be driven a unit, as in the numeral position of the controlling member the overlapping tooth 61 or 65 of the turning member concerned engages a too-th gap 67 (Fig. 1l) of the corresponding carrier disc 43. The

turning members on the left hand side from the highest type carrier adjusted to a numeral position rotate over their controlling members which. are in normal position, so that the type carriers 11 of these higher denominations too are retained in their normal position, having in the illustrated embodiment the blank types in the printing line. The manner in which the rota-t ing movement of the higher denominations is enforced is explained below.

As the controlling members28 are driven by the turning members 29 from denomination to deu nomination, in case of a driving extending over a great number of the type carriers and inaccurate manufacture of the parts it is just possible that the back-lash in the gearings may be inconvenient in that the type carriers 11 of the lower denominations are not driven far enough.

For obviating this danger the type carriers 1l, after the turning members 29 have arrived at the nalworking position, are alined, and this is performed, according to the illustrated mode of construction, by alining the turning members 29 themselves. For this purpose the alining discs 68 (Figs. 3, 10) are arranged between the controlling members 28, which project, with a tongue 69 into a slot 71 (Fig. 3) of a sleeve 72 surrounding the shaft 27. The alining discs possess locking faces 73 (Fig. l0) cooperating withthe locking notches 35 or 36 (Fig. 5), the length of which increases from the highest denomination towards the lowest one (Fig. 5) and which at the upper ends terminate in bevelled edges 74 (Figs. 10, 5). If the sleeve 72 is rocked clockwise (Fig. 5) after the turning members 29 have assumed their final working position, the locking faces 73, beginning in the highest denomination, enter one after another their locking notches 35 or 36,-this is made possible by the above-mentioned recesses 38, 40 (Fig. 4)-and bring the turning members 29, the controlling members 28 and the type carriers one after another in their correct position. The rocking of the sleeve 72 is performed by a pitman 75 (Figs. l, 2) which is linked t0 an arm 76 fixed to the right hand end of the sleeve 72 (Fig. 2) and engaging with a roller 77 a cam groove 78 of the cam disc 57.

In the foregoing remarks it was supposed that the turning members 29 are brought in their initial working position into mesh with the controlling members 28 only after the eventual adjustment of the latter to the numeral position has taken place. This engagement may be performed by a rolling-in movement of the turning members 29, this rolling being performed when the turning members29 move from the position of rest (position R) to the initial working position (position A). In the position R of the turning members and the normal position of the controlling members ihe locking faces 79 of the locking discs 42 (Fig. 9) are in mesh with the locking notches 34 (Fig. 5). The taking-with discs 43 face the turning members 29 with a wide tooth gap 8l (Fig. 11). As the toothed. gear of the rolling disc 39, at the corresponding place, is not mutilated and the locking disc 42 possesses corresponding recesses, the turning members 29, upon the rocking of the shaft 3l from the position R to the position A, will roll along on the controlling members and when in theposition A be in correct engagement with their controlling members Without a radial engaging movement.

If a controlling member is conveyed into its numeral position while the turning members assume the position of rest, the turning member 29 in question is rotated two spaces, and this rotation, on account of the tooth gap 8l, is in no case prevented by the next lower controlling member 28 not supposed to be removed. The tooth gap 81 and the rocking path ranging from the position R to the position A are made so large, that even if the controlling member 28 of a denomination is adjusted tothe numeral position and thereupon the controlling member of the next higher denomination is adjusted to the numeral position, the disc 43 remains out of reach of the turning member in question whenin rest position.

During the rockingr movement of the turning member 29 from the position R to the position A the controlling members not in numeral position are not locked against counter-clockwise rotation, so that it may happen that they are caught more or less by the turning members. In order to obviate this the controlling members 28 are locked during thek rolling-in movement of the turning members 29 and this locking is effected in the illustrated embodiment of the invention by the same locking means by which the type carriers 11 are locked afterV their adjustment. The locking means consists of a locking beam 82 (Fig. 1) vsupported by arms 84 fastened on a rigidly arranged shaft 83. By an arm 85 the shaft 83 is connected to a pitman 86 which engages a cam groove 88 (Fig. 2) of a cam disc 26 xed to the driving shaft 25 by means of a roller 87 (Fig. 1). y

As can be seen from Fig. 12. not all of the type carriers 11 are provided with types in quite the same manner. The described mode of operation refers only to the middle denominations. The illustrated printing device has ten denominations.

In the third denomination, besides the numeral types, there is provided a dot for indicating the amounts of pfennigs. As it is .serviceable relative to these three denominations to let the zeros appear when one of the three type Camiers is adjusted to a numeral position, the blank types are omitted in these denominations and the type carriers in question, in their normal position, show a zero inthe printing line, which in Fig. 12 is indicated by a dash and dotted line. printing sign is of no account for the lower denominations, an additional movement of these three denominations is not necessary either. Therefore, as shown by Fig. 2, the controlling members 28 and the turning members 29 are dispensed with in these denominations and the tooth gap 91, arranged at the right hand side of the tooth 66 (Fig. 1) for making possible the additional movement while the intermediate wheel 15 is arrested does not exist. Instead, a tooth 92 As the blank indicated in Fig. 1 by dotted lines is provided on the type carriers ll of these three denominations, by means of which, in connection with the tooth 66, the type carriers ll of the three lowest denominations are positively kept in the normal position.

The type carrier 1l of the highest denomination, too, bears, as may be seen from Fig. 12, no Zero type, as a zero never is printed in the highest denomination, and the type-carrier of the highest denomination thus needs no additional movement and it likewise bears a tooth 92 (Fig. l) so that it and the controlling member 28 in mesh with it are held non-rotatably in their normal position relative to both directions of rotation. Owing to this fact, the turning member 29 engaging the controlling member 28 of the highest denomination is held non-rotatably also in the position A and therewith also the attached lower controlling members, in so far as they are in normal position, remain locked in the same and cause a rolling movement of the turning members 29. That would not be the case if the tooth 92 (Fig. l) on the type carrier l1 of the highest denomination or a corresponding lug were omitted. The same purpose may of course be attained by rigidly securing an additional controlling member 28 in the normal position to the wall 20 (Fig. 2). In order to hold the controlling member in the correct lateral position, a distance ring 93 (Fig. 2) is loosely mounted on the sleeve 72.

As may be seen from Fig. 2, by the manner of distributing the blank-and zero types relative to the normal and additional positions only six turning members 29 and seven controlling members 28 are necessary with a printing mechanism of ten denominations.

In order to explain the mode of operation of the device, the timing diagram, Fig. 13, shows the shape of the peculiar cam grooves of the cam discs 26 and 57 during a revolution of the shaft 25. The topmost line 240 shows the course of the cam groove 24 for the platen 17 (Fig. l), the second line 78() the course of the cam groove 78 (Fig. 2) for rocking the sleeve 72 to aline the turning members in the final working-position, the third line 560 shows the course of the cam groove 56 for rocking the turning members 29 from the position R over the position A to the position E and back, and the line 880 indicates the course of the cam groove 88 for driving the locking beam 82.

Supposed, the amount 620 502.01 is to be printed and all type carriers are before the beginning of the operation of the machine, in their normal position represented by Fig. l. During the differential movement by which the type carriers of the first, third, fifth, seventh and eighth denomination are adjusted to the numerals l, 2, 5, 2 and 6 by means of the members 16 and intermediate wheels 15 the driving shaft 25 (Fig.

2) is in a position of rest and the position of the parts driven by it corresponds to the ordinate 0 (Fig. 13), that is, the platen 17 (Fig. 1) and the locking beam 82 free the type carriers 11, the turning members 29 assume the position R and the alining members 68 (Fig 10) are in their normal position indicated in Fig. 5.

As soon as the differential operation is finished, the shaft 25 (Fig. 2) is caused to carry out one revolution and thereby, in the first instance, the locking beam 82 (Fig. l) is put into the gear 13 of the type carriers 11, whereupon the turning members 29 are rocked from the position R to the position A (Fig. 5) by the cam groove 56. They roll over their controlling members, no matter whether the latter are in their normal or numeral position. 1n the position A they connect the controlling members in the following manner:

The type carriers of the tenth and ninth denomination have remained in their position and, therefore, the two turning members 29 of these denominations, through their locking notches 36, overlap the locking faces 59 (Fig. 5). The turning member of the tenth denomination is kept non-rotatably by means of its tooth 61 through the type carrier of the tenth denomination arrested by the teeth 66 and 92 (Fig. l) and thereby retains the controlling member of the ninth denomination, too, the notch 63 (Fig. 11) of which is engaged by the tooth 61 of the turning member in question so that the turning member of the ninth denomination too is unableto rotate about the shaft 31. As the controlling member of the eighth denomination is in the numeral position, the tooth 61 of the turning member of the ninth denomination projects into the tooth gap 67 (Fig. 11) of this controlling member. The turning members of the eighth, seventh and fifth denominations engage with their notches 35 (Fig. 5) the locking faces 64 (Fig. 6) of their controlling members, because these are in a numeral position.

Between the controlling members of the eighth and seventh denominations no connection exists, as the tooth of the latter projects into the tooth gap 67 (Fig. 11) On the other hand the turning member of the seventh denomination, which, as mentioned, is kept non-rotatably by the locking face 64 (Fig. 9) engages through its tooth 65 the notch 63 (Fig. 11) of the takingwith disc 43 of the controlling member of the sixth denomination, which is in the normal position. The same relation as between the seventh and sixth denomination consists between the fth and the fourth one.

As soon as the turning members have arrived at the position A, the locking beam 82 (Fig. 1) is taken out of the gear 13 and thereupon, as may be seen from Fig. 13, further movement of the turning members to the position E takes place. This movement brings it about that the type carriers 11 of the sixth and fourth denomination are driven an additional unit opposite to the direction of the differential movement, that is, according to the arrow 30 (Fig. `1) This is effected by having the teeth 65 of the turning members kept non-rotatably by the locking faces 64 engage the notches 63 (Fig. 1l) and take with them counterclockwise the controlling members 28 in question for two spaces. The type carrier of the highest denomination remains in its normal position due `to the teeth 66 and 92 (Fig. 1) in the same manner the type carrier of the ninth denomination is retained in the normal position through the medium of the turning member of the tenth denomination.

As the type carriers l1 of the rst to third denominations are excluded from the additional movement, the type carrier 28 of the second denominations remains in its normal position, in which it offers a Zero to the platen 17.

Then the alining of the turning and controlling members is accomplished by rocking the alining members 68 (Fig. 10) by the cam groove 78. This done, the cam groove 24 causes the printing movement whereby the amount 620 502,01 is printed. After that, rst the alining members 68 (Fig. l0) are returned to their normal position (Fig. 5) and then the turning members willbe returned from the position E to the position A. At this return movement the-additional movement imparted to -the sixth and fourth denomination is cancelled so that the turningand controlling members are again either in normal position or numeral position. The next step is the re-engagement of the locking beam 82 (Fig. 1). If necessary, this may be preceded by another alinement of the turning members by the discs 68. After the locking of the controlling members by the beam 82 the turning members 29 will be returned from the position A to the position R and nally the printing operation is finished by Y lowering again the locking beam 82 through the cam groove 88.

As the locking face 79 (Fig. 9) is long enough, the turning members 29 engage it with the corresponding teeth and return the controlling members 28 and the type carriers 11 to the normal position, if they are not in the numeral position. 110

iter the termination of the printing operation the type carriers and controlling members in numeral position may be returned by pushing back the differential members 16 into the normal position or they may remain in their position, asis the case in machines where the differential members while the machine stops remain in the positions into which they were brought by the preceding operation of the machine and are moved Yduring the new operation of the machine directly the additional movement in such a way that priorto the zero control all type carriers are in the printing line and in the space of time between 'the differential movement and the printing an 135 additional movement is imparted to the type carriers on the left hand of the highest denomination whereby the blank type arrives at the printing line.

Further, the arrangement may be such that all type carriers are in blank position and as far as a numeral is adjusted on them in a position differing for one unit from the numeral to be printed and where all type carriers relating to the set amount are moved a unit in the space of time between the differential movement and the printing, so that the differentially actuated type carriers arrive at their correct numeral positions and the not diierentially actuated 'ones arrive at their z ero position. With the aid of the described em- 150 bodiment of the invention the skilled constructor is enabled to apply the described principle of turning members to these other modes of causing additional movement, although the constructions in question are somewhat more complicated.

With regard to the peculiar construction of the described embodiment of the invention it is further pointed out that the direct arrangement of the locking faces 48 and gearing 46 on the type carriers is made only in order to facilitate description. Preferably the type carriers will be journalled to a special shaft and brought into positive connection with members having the locking faces 48 and the gears 46.

The fundamental ideas of the arrangement of the turning members can be embodied also in such a way that with the controlling members omitted the turning members directly cooperate with the type carriers which, in this case, have a gear similar to that of the controlling members in the illustrated embodiment of the invention.

l. In a zero printing device a type carrier adapted to be adjusted to numeral positions, a zero position and a blank position, a turning member in mesh with the type carrier and journalled on a pivot, means for bodily moving the turning member, means for forcing the said turning member to rotate about its pivot while bodily moved so as to hold the type carrier locked, and means for preventing a rotation about its pivot while bodily moved in order to move the type carrier betfveen its blank and zero position.

2. In a zero printing device a type carrier adapted to be adjusted to numeral positions, a zero position and a blank position, a turning member in mesh with the type carrier and journalled on a pivot, means for bodily moving the turning member, an adjustable gearing connection between said turning member and the type carrier of the adjacent denomination being in a certain position for causing its rotation about its pivot while bodily moved, and an adjustable locking connection between said turning member and the type carrier of the adjacent denomination being in another certain position for preventing rotation of the said turning member about its pivot while bodily moved.

3. In a zero printing device a type carrier Aadapted to be adjusted into numeral positions, a

zero position and a blank position, a turning member in mesh with the type carrier and journalled on a pivot, means for. bodily moving the turning member between an initial Working position and a final working position, adjustable means for locking the turning member against rotation about its pivot during the body movement comprising a locking face connected to the type carrier brought into the Working range of the turning member by' adjusting the type carrier into a numeral position, a set of teeth connected to the type carrier participating in said body movement, and adjustable means for causing rotation of the turning member about its pivot during the body movement comprising a gearing connection with the resting type carrier of the next denomination.

4. In a zero printing device a type carrier adapted to be adjusted to numeral positions, a zero position and a blank position, a turning member in mesh with the type carrier and journalledon a pivot, means for bodily moving the turning member, adjustable means for causing rotation of said turning member about its pivot while bodily moved in order to hold the type carrier locked, and adjustable means for preventing rotation about its pivot while bodily moved in order to move the type carrier between its blank and zero positions, said turning member 5. In a zero printing device a type carrier adapted to be adjusted to numeral positions, a

zero position and a blank position, a turning member, a pivot bearing the latter, means for bodily moving the pivot, a controlling member in mesh with said type carrier and cooperating with said turning member, a shaft forming a fulcrum for the controlling member and being rigidly connected tothe pivot of said turning member bodily moved by it.

6. In a zero printing device according to claim 4, locking faces and a full toothed gear connected to its type carriers arranged one after another and having connections to its type carriers in order to move one or the other of them into the working range of the turning member by adjusting the type carriers from their blank into one of its numeral positions.

'7. In a zero printing device type carriers each adjustable 'to numeral positions, a zero position and a blank position, a turning member for each type carrier bodily movable from an initial working position into a final working position, and means rigidly connected with the machine frame for holding the turning member on the left of the highest denomination of the amount to be printed in non-rotatable relation.

8. In a zero printing device, type carriers each adjustable into numeral positions, a zero position and a blank position assuming normally the blank position, and means for moving the type carriers to the right of the highest denomination, which after the amount being entered into the set of type carriers remain in their blank position, from blank position into zero position to the exclusion of the other type carriers set on a digit, said blank position being arranged between the zero position and the numeral position of the digit 1'.

9. In a zero printing device a typev carrier adjustable to numeral positions, a blank position and a zero position, a controlling member, a gearing connection between the type carrier and the controlling member holding the latter in a predetermined position if the type carrier assumes one of the blank or zero positions, and a locking relation between the type carrier and the controlling member adapted to lock the controlling member upon moving the type carrier into one of its numeral positions.

10. In a zero printing device, a type carrier adapted to be adjusted into numeral positions, a zero position and a blank position, a turning member mounted on a pivot, means for bodily moving said pivot from an initial working position to a iinal Working position, a controlling member connecting the type carrier with the turning member and assuming, upon the numeral positions of the type carrier, a numeral position and upon the blank position a normal position, a tooth and a locking face on the turning member, and a gear and counter-locking face on the controlling member, whereby in the initial working position the turning member is locked against rotation about its pivot by engaging with its tooth the gear of the controlling member being in normal position and engaging with its locking face the counter locking face of the controlling member being in numeral position, and whereby the turning member upon being moved into the final working position slides over the counter-locking face of the controlling member being in numeral position, thereby taking with it the adjacent lower controlling member being in normal position or rotates over the toothed gear of the controlling member being in normal position.

11. In a zero printing device according to claim 10, a recess of the gear arranged alongside the counter locking face for enabling the turning member to slide over the locking face. l

12. In a zero printing device type carriers adapted to be adjusted to numeral positions, a zero position and a blank position, turning members mounted on a pivot and being in mesh with the type carriers, means for bodily moving said pivot from an initial working position to a nal working. position, and means for alining the type carriers one after another beginning with the type carrier of the lowest denomination.

13. In a Zero printing device according to claim l2, said alining device comprising alining disks cooperating with said turning members being in mesh with said type carriers, and a locking means for the type carriers, said disks being adapted to lock the turning members until the type carriers have been locked by said locking means.

14. In a zero printing device according to claim 12, a sleeve, controlling members arranged between the turning members and the type carriers loosely mounted on said sleeve, a shaft extending through said sleeve and forming a part of a frame bearing the pivot of the turning members,

each alining disc being fixed on said sleeve and arranged between the controlling members of adjacent denominations, and means for separately rotating the shaft and the sleeve.

15. In a zero printing device a type carrier adapted to be adjusted to numeral positions, a zero. position and a blank position, a turning member mounted on a pivot and being in mesh with the type carrier, means for bodily moving said turning member from an initial working position to a nal working position, and engaging means for bringing the turning member into and out of mesh with the type carrier by a rolling action.

16. In a.zero printing device a type carrier adapted` to be adjusted into numeral positions, a zero position and a blank position, a turning member, an intermediate member arranged between them, means for bodily moving said turning member from a rest-position over an initial working position to a nal working position, and means for holding the turning member in due mesh with the intermediate member during its entire bodily movement in order to establish a gearing and locking connection with the intermediate member. I

17. In a zero printing device according to claim 16, a locking means whereby the turning member is locked during its movement between the restposition and the initial working position.

18. In a zero printing device according to claim l 16, a locking face on the intermediate member, a tooth on the turning member cooperating therewith, whereby upon moving the turning member into its position of rest the intermediate member is taken along into its normal position.

19. In a zero printing device a type carrier adapted to be adjusted into numeral positions, a zero position and a blank position, a turning member, an intermediate member arranged between them and being moved by the type carrier into a numeral position, means for bodily moving said turning member from an initial Working position to a nal working position, a gear on the intermediate member cooperating with the turning member of the next higher denomination, so arranged on the intermediate member in relation to the initial and nal working position of the turning member that it is out of mesh withthe latter when the intermediate member assumes its numeral position.

20. In a zero printing device a type carrier adapted to be adjusted into numeral positions, a zero position and a blank position, a turning member, an intermediate member arranged beltween them and adapted to be moved into a normal position and a numeral position upon ad-V justing the type carrier, means for bodily moving said turning member from a rest-position over an initial into a final working position, a. gear on the intermediate member cooperating with said turning member when moved from the initial into the nal working position, so arranged on the intermediate member in relation to the rest and initial working position of the turning member that it is out of mesh 'with the latter when the intermediate member assumes its numeral position.

ALEXANDER VARREN.

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