CH309225A - Calculator-printer. - Google Patents

Description

  

      Calculator-printer. The present invention relates to a (,, computer-printer capable of solving multiplication or division problems and of printing the results of these problems in addition to the usual functions of a calculator-printer for addition and subtraction. .



  A machine of this type is particularly advantageous in offices where the majority of operations <B> to </B> perform are simple additions or subtractions with, occasionally, a problem of, multiplication yes <B> of </B> division <B> to </B> solve. For all these problems, the results of the calculations must be automatically printed on a tape to control the operator's attention and to eliminate the need for two separate machines, with the possibility of an error in the transcription of the responses of the operator. 'one of the machines.



  The calculator-printer which is the object of the invention comprises a mechanism which cycles in cycles, an Inscribing mechanism advancing one step in a higher rank for each digit which <B> y </B> is inscribed, a totalisateLir, a device for passing through said totalizer the values of the enrollment inecanism, additively or subtractively,

      a multiplication mechanism controlling the repeated cycles of said mechanism, - a mechanism operating in cycles, a recall mechanism which, during -a multiplication and a -division, recalls the mechanism of Entering a step to divide the -niultiplicand or the divisor by factor <B> 10, </B> and -a bar <B> to </B> Count-Lise characters taking a step forward <B> to </B> each cycle of multiplication or division.



  According to the invention, this calculator-printer is characterized in that it comprises a member for placing the multiplier, which is movable in one direction. <B> to </B> from the normal zero position to any one of several corresponding numerical positions <B> to </B> the value of the multiplier and which has a subnormal position in which it moves one step in the opposite direction beyond the normal position in the last cycle of addition during a multiplication, -a mechanism of multiplication control allowing the repetition of addition cycles,

     <B> y </B> including the recall of said placing member said multiplier and the advancement of said counting bar by one step per cycle, and causing the recall of the entry mechanism of the entry mechanism and the recall of the counting bar only. when the laying member <B> of </B> multiplier is nifide the subnormal position <B> to </B> the normal position,

   and a control mechanism <B> of </B> division to activate the multiplication control mechanism and thereby cause repetition of subtractive cycles as long as the totalizer contains a positive remainder and to determine the additive record in order to reduce <B> the </B> counter bar and to activate the mechanism for recalling the mechanism for registering a step when the remainder in the totalizer is negative.



  The attached drawing represents, <B> to ' </B> By way of example, an embodiment of the calculator-printer forming the subject of the invention.



  Fig. <B> 1 </B> is an overview.



  Fig. 2 is a plan view showing the position of the various keys of the keyboard. Fig. <B> 3 </B> is a sectional view showing basic mechanisms for writing and entering numbers in a Zn totalizer. Fig. 4 is a view taken from the right side and showing actuators above the totalizer, for addition, subtraction and taking of totals, as well as the Symbol Printing mechanism.



  Fig. <B> 5 </B> is a partial view. showing the disengagement of multiplication and division cradles by a correction key.



  Fig. <B> 6 </B> is a view taken from the right side and showing a usual mechanism for taking a total, an automatic mechanism for initiating a total taking after a multiplication or division operation, as well as a part of a total. symbol printing mechanism.



  Fig. <B> 7 </B> is a view of part of <B> the </B> fig. <B> 6 </B> and shows an oi-yane making it possible to pre-, determine whether or not -an automatic total taking must follow a multiplication or division operation.



  Fig. <B> 8 </B> is a perspective view of part of the mechanism for entering values and also shows an extension key of the calculation as well as organs <B> of </B> link between these two devices.



  Fig. <B> 9 </B> is a perspective view of a mechanism for disengaging the automatic mechanism for recalling the numbering members in the multiplication and division operations.



  Fig. <B> 10 </B> is a side view taken (read left side, showing a mechanism for recalling the inscription members, a return mechanism for backspacing and a mechanism for printing the decimal point. fig. <B> 11 </B> is a perspective view of the registration bodies for multiplication and the automatic recall mechanism of these bodies.



  Fig. 12 is a side view from the left showing the slider-multiplier of inscription and its controls, aiii #, i that the control members of this slider by the printing mechanism.



  Fig. <B> 13 </B> is a partial view showing the stop key and its connection with the or, cane :, automatic stop.



  Fig. 14 is a side view of the right side of the multiplication members, including the pressure, counting and automatic stop mechanisms and also shows certain members of the dividing mechanism.



  Fig. <B> 15 </B> is a view taken from the right side of the non-addition key and the addition key.



  Fig. <B> 16 </B> shows a mechanism that advances the counter bar during multiplication and division, with the organs being represented in a working position.



  Fig. <B> 17 </B> is a similar view <B> to </B> that of fig. <B> 16, </B> but shows the organs in a position towards the end of a cycle of multiplication or division.



  Fig. <B> 18 </B> reproduces part of fig. <B> 16 </B> and shows the organs <B> to </B> the position in which an error is signaled by the machine.



  Fig. <B> 19 </B> is a perspective view showing <B> the </B> mechanism of the counting bar shown in fig. <B> 16. </B>



  The lio ,. 20 is a perspective view of part of the divider mechanism, in particular of the mechanism indicating an overrun.



  Fig. 21 is a view taken from the rear and showing part of the printing control members.



  Fig. 22 is a perspective view showing the printing control mechanism and erasing members of a fugitive unit for division operations.



  Fig. <B> 23 </B> is a view of the left side of the mechanism (the backspacing of the inscription mechanism during division operations. Fig. 24 is a similar view <B> to </B> the one, key l-a fi-. <B> 23, </B> but shows the organs in the order window.



  Fig. <B> 25 </B> is a left side view of the backspacing mechanism used for multiplication operations.



  The fi% <B> 26 </B> is a partial view showing <B> C </B> a lock preventing the return of the slider- multiplier from a subnormal position to the position <B> 0 </B> until the end of the cycle.



  Fig. <B> 27 </B> is a perspective view of the mechanisms controlling the printing and paper feed units during multiplication operations.



  The thread-. 28 is a perspective view (bed 11) of the mechanism used for -a di-vi- -ân operation <B> to </B> predetermined extension.



  The <B> 29, 30 </B> and <B> 31 </B> show some <B> de- </B> details of the mechanism preventing the automatic stopping of a division until the quotient digit has been completely determined. Iii #. <I> General description. </I>



  The calculator-printer shown is intended for <B> to </B> be used whenever it is necessary to perform addition, subtraction, multiplication and division operations in which all the factors going into the calculation are to be printed on a recording tape . It includes a basic machine made up of the ma chine <B> to </B> add SLindstrand, well known in the trade.

   This machine is able to perform additions, subtractions, automatic key operations taking a total and a subtotal, <B> y </B> including negative rates which are printed as actual negative totals.



  The machine <B> to </B> Sundstrand's add has been modified by adding commands allowing the execution of multiplications by <B> the </B> repeated addition process. We write first, on the usual keyboard <B> to </B> ten keys, the digits of the multiplicand followed by a number of zeros equal to the number of digits of the multiplier minus one. Then place a cursor-multiplicate-ar on the first digit of the multiplier and lower the multiplication key.

   Operation of the multiplication key first initiates a non-addition cycle and then a number of addition cycles equal to the number determined by the slider-multiplier. During the last of these cycles, the printing hammers are released to print <B> the. </B> figure <B> of </B> multiplier by means of a bar <B> to </B> characters which has been advanced # one step per cycle, and to print the multiplicand used for that multiplier digit. <B> A </B> roughly <B> to </B> the end of this last cycle,

   the key (the backspace of the keyboard is operated or automatically to divide the multiplication by the factor <B> 10, </B> and the machine cycles control intervenes to stop <B> the </B> continuation of cycles.



  The slider-multiplier has been brought back <B> to </B> 7éro during the previous operations. Place it on the second digit of the multiplier and press the multiplication key down again to initiate a second series of similar cycles. <B> to </B> the first series which has just been described. These operations are repeated for each of the following digits of the multiplier, except for the last one.

   During the last cycle of multiplication by the last digit of the multiplier, the backspacing mechanism is disengaged, and the write erase mechanism is engaged to completely erase the multiplicand on the write pins. During this last cycle, we can also operate the total setting key to initiate an automatic cycle during which the product of the multiplication is printed.



  The previously described mechanism is completed by a stop key which, when lowered, stops the previously described multiplication. <B> to </B> the end of the operation with the multiplier number <B> already </B> registered or registered subsequently. The set also features an extension key which, when lowered, prevents shutdown. <B> the </B> multiplication until the multiplicand has been completely eliminated by the intervention of the mechanism <B> of </B> back-spacing previously described, This key allows the use of large multiplicand and (or) multiplicator lines whose product exceeds the capacity of the totalizer used,

   although this results in an insignificant loss of accuracy.



   <B> 5 </B> The caleulatrice-printer shown is also capable of solving division problems by repeated subtraction of an inscribed di visor line, of a previously entered dividend, until a complement is obtained, <B> a </B> followed by a cycle of adding and printing the number of the quotient, and the divisor used, and a back-spacing of the entry mechanism of the -divisor.

   This cycle of operations is repeated automatically until the <B> 5 </B> problem is fully resolved, after which the machine runs to print the rest as a total. We can use <B> the </B> overtime in division problems for which more is desired <B> a </B> quotient digits that the calculation does not give until the normal end of the problem.

    This key, when lowered, prevents the usual so-called trouble stop operation until the register mechanism of the divider has been returned. <B> to </B> the normal position by the sel-il backspacing mechanism. The slider-multiplier can be used in the division to predetermine the number of digits of the quotient <B> to </B> calculate before <B> D </B> the machine will automatically stop and the rest to be deleted.

   As will be described in detail later, the mechanism initiating the stopping of operations does not intervene as long as the cursor-multiplicatear does not occupy the position <B> to </B> zero, and this cursor is brought back one step <B> to </B> each machine addition cycle. Therefore, if a division problem normally stops before the cursor-multiplier arrives at the starting point, that stop is <B> D </B> deferred (until cursor has reached zero point) # by one step for each addition cycle that matches <B> to </B> the determination of a figure of the quotient.



  Machine <B> to </B> add <B> <I> of </I> </B> <I> base. </I> <B> 5 </B> (Fig. <B> 1, </B> 2, <B> 3, </B> 4 and <B> 6.) </B> <B> c </B> The calculator-printing machine represented coin- takes, a machine <B> to, </B> Basic addition, which is of the type of the portable Underwood Sundstrand machine on the market. The arrangement of this machine will be briefly described as far as it is necessary for a good understanding of the present invention.



  Figs, <B> 1 to 3 </B> show that the number keys <B> 30, </B> ten in number, are connected <B> to </B> an equal number of pushers <B> 31 </B> mounted in an oscillating frame <B> 32. </B> This framework <B> 32 </B> se <B> de- </B> place in front of a group of adjustable registration pins <B> 33, </B> one step for each operation of a number key <B> 30. </B> One of the pins <B> 33 </B> next to the oscillating frame <B> 32 </B> is a - #, anchored via a pusher <B> 31 </B> <B> to, </B> using the key <B> 30 </B> corresponding.



  Several bars <B> 35, </B> climbs <B> to </B> slides on a fixed rod <B> 36, </B> present <B> ca- </B> characters <B> 37 </B> in the upper part. <B> A </B> the lower part of these bars is articulated illi arm <B> 38, </B> The anterior ends of the arms 38 3 are engaged in the slots of a group tn of exploration rods <B> 39 </B> which can be brought into contact with the advanced pins 33- A casing frame 40 is attached <B> to </B> the back of the frame

  oscillating <B> 32 </B> polish move in svIl- chronism with this one, and glide polish the upper ends of the exploration rods <B> 39. </B> Bars <B> to </B> characters <B> 35 </B> are normally.

   maintained in their lower position as shown in FIG. <B> 3, </B> and they are solicited from bottom to top by individual arms 42, articulated on a shaft 43, to bring the exploration rods <B> 39 </B> in contact with advanced bro ches <B> 33. </B> Each arm 42 carries <B> to </B> its anterior end a finger 44 engaged in a slot 45 made in a posterior extension 46 of the bar, <B> to- </B> characters <B> 35 </B> corresponding. The arms 42 are requested in the direction of clockwise by res spells 47, hooked, on the one hand, <B> to </B> Lin extension of these arms and, on the other hand, <B> to </B> -a rod 48 which is lowered during a machine cycle.

   A bar 49 is placed above all of the arms 42 to hold the bars <B> to </B> characters <B> 35 to </B> the starting position. This bar 49 is actuated during each cycle to release the arms 42 and to allow elevation. bars <B> to, </B> characters <B> 35 </B> until they are stopped by the advanced pins <B> 33. </B> She brings back: then all these organs <B> to </B> the position <B> of </B> departure.



   <B> A </B> impact cylinder <B> 52, </B> fitted with coaches <B> 53, </B> is placed <B> to </B> the back of the characters <B> 37 </B> to bring a strip of paper into printing position. When the bars <B> to </B> characters <B> 35 </B> occupy the appropriate position <B> to </B> printing on paper, characters <B> 37 </B> are struck by hammers 54.



  The posterior extensions 46 of, bar res <B> to </B> characters <B> 35 </B> carry two groups of racks <B> D-5 </B> and <B> 56 </B> connected to the extensions 46 by fingers <B> 57 </B> integral with these extensions and engaged in slots <B> 58 </B> practiced in the racks <B> 55 </B> and <B> 56. </B> Springs 59a recall the racks <B> 55 </B> and <B> 56 to </B> the lower position.

   The normal position of the racks <B> 55 </B> and <B> 56 </B> is determined by the cooperation of a heel <B> 59 </B> racks- 11'res <B> 55 </B> or <B> 56 </B> with a beak -de transfer of the tens <B> 60. </B> A totalizer <B> 61, </B> placed between the racks <B> 55 </B> and <B> 56, </B> can mesh with the racks <B> 55 </B> for the addition and taking cFun total or positive subtotal, and with the crisscrossers <B> 56 </B> for subtracting and taking a negative total or subtotal. Report teeth <B> 62 </B> on the pinions of the totalizer 661.

    can cooperate in a direction of rotation with locking jaws <B> 63 </B> to release the spout <B> 60 </B> of the heel <B> 59 </B> corresponding and to release the rack <B> 55 </B> or <B> 56 </B> of the next upper column for an additional downward movement. In the other direction of rotation,

   beak <B> 63 </B> stops the transfer tooth 622 to prevent further movement of the bar <B> to </B> characters <B> 35 </B> and to thus allow the taking of totals and sub-totals. Report slats <B> 63 </B> and <B> 60 </B> released during an operating cycle of the machine are recalled <B> to </B> the working position by two bars 64 integral with spaced levers <B> 66 </B> articulated on trees <B> 65 </B> with the beaks <B> 60, </B> and moved one to the other during the first half of the next machine operating cycle,

   by the cooperation of a bar <B> 67 </B> with a posterior Pun arm of the levers <B> 66. </B> Meshing and disengaging between the totalizer <B> 61 </B> and the racks <B> 55 </B> and <B> 56 </B> are done by a known mechanism. It will therefore suffice to briefly recall how it works.

   As shown in fig, 4, a lever <B> 71, </B> united with a tree <B> 72, </B> is connected by a connecting rod (not shown) to the totalizer <B> 61. </B> Starting from a middle position, this lever is moved -in the opposite direction <B> to </B> the one clockwise, towards the position shown in fig. 4, to engage the totalizer <B> 61 </B> with the additional racks <B> 55, </B> and clockwise to engage the totalizer <B> 61 </B> with the racks <B> 56 </B> for subtraction operations.



  The lever <B> 71 </B> is moved between its three positions by a connecting rod <B> 73 </B> with two check marks 74 and <B> 75 </B> intended <B> to </B> cooperate with fingers <B> 76 </B> and <B> 77 </B> integral with the lever <B> 71. </B> NTormally, the connecting rod <B> 73 </B> is placed so that the lower notch <B> 75 </B> is engaged on the lower finger <B> 77. </B> In this position, any backward movement of the connecting rod <B> 73 </B> causes # to generate the totalizer <B> 61 </B> with the racks <B> 555 </B> for addition operations. When the connecting rod <B> 73 </B> occupies its previous position,

   it can be moved by -Lm lever <B> 78 </B> to clear the finger <B> 76 </B> in notch 74. This lever <B> 78 </B> is articulated in <B> 79 </B> to the machine frame. A spring <B> 80, </B> hanging, on the one hand, <B> to </B> a branch of the lever <B> 78 </B> and, on the other hand, <B> to </B> a cursor <B> 81, </B> requests this lever to apply a finger 82 of this branch against the posterior end of a slit <B> 83 </B> practiced in the cursor <B> 81. </B> This is returned to the front by a spring 84, hooked, on the one hand, <B> to </B> -a tab of this slider and, on the other hand, to the frame of the machine, to hold the lever <B> 78 </B> and the connecting rod <B> 73 </B> in the addition position.

   During subtraction and negative totalization operations, the cursor <B> 81 </B> is moved back to tension the spring <B> 80 </B> and to bring the lever <B> 78 </B> and the connecting rod 7 ô to the subtraction position as soon as the connecting rod <B> 73 </B> is moved forward to center the totalizer.

        The front end of the connecting rod <B> 73 </B> re pose on a brooch <B> 86 </B> secured to a lever <B> 87 </B> hinged to the frame <B> 88. </B> The brooch <B> 86 </B> is pledged behind the scenes <B> to </B> cam <B> 89 </B> of a plate <B> 90 </B> articulated in <B> 91 </B> and wearing two fingers 92 and <B> 93 </B> (fig. <B> 6). </B> The backstage <B> to </B> cam <B> 89 </B> is conformed in this way, one that,

          when the plate 90 is moved in a clockwise direction., the connecting rod <B> 7â </B> is -moved backwards to engage the totalizer <B> 61, </B> while moving the turntable <B> 90 </B> in the opposite direction <B> to </B> that of the hands of a monster results in a disengagement of the to talisator <B> 61 </B> and -racks <B> 55 </B> and <B> 56. </B> Platinum <B> 90 </B> -is moved for addition and subtraction operations by a ratchet <B> 9-1. </B> articulated <B> to </B> a turntable <B> 95 </B> integral with a main shaft <B> 96. </B> A spring <B> 97,

   </B> interposed between the pawl 94 and the plate <B> 95, </B> tends <B> to </B> turn this pawl clockwise. Platinum <B> 95 </B> and the main tree <B> 96 </B> normally occupy the position of fig. 4, except that the pawl 94 is pressed against the finger <B> 92. </B> -An initial movement of the shaft 96moves the plate <B> 90 </B> in the opposite direction <B> to </B> the clockwise one to release the totalizer <B> 61 </B> racks <B> 55 </B> or <B> -56. </B>



  The totalizer re-engages the racks for addition or subtraction depending on the cursor position <B> 81 </B> and leverage <B> 78 </B> at the start of the cycle return period. This movement is produced by the pawl 94 cooperating with the finger <B> 93 </B> (fig. <B> 6) </B> to rotate the plate <B> 90 </B> clockwise.

   The re-engagement of the totalizer <B> 61 </B> with the racks <B> 55 </B> or <B> 56 </B> can be prevented by maneuvering, with an addition stop key <B> 99 </B> (fig. <B> 6). </B> This, key <B> 99 </B> has a branch <B> 100 </B> superimposed <B> to </B> a stop arm <B> 101 </B> which, in the rest position, retains a slider 102 returned by a spring (fig. 4) to prevent it <B> of </B> move back.

   The cursor 102 is periodically released for <B> the </B> recoil and recalled <B> to </B> the previous position by a lever <B> 103 </B> forming part of the ribbon drive mechanism (not shown) <B>. </B> The lever <B> 103 </B> Sorrel back and forth during each cycle.

   The cursor 102 occupying the posterior position cooperates with the edge of the ratchet 94 in the middle part of its movement and maintains it sufficiently apart to prevent its contact with the finger. <B> 93 </B> during the return of the turntable <B> 9.5. </B> Accordingly, the connecting rod <B> 73 </B> controlling the totalizer is not moved rearward to make it mesh with the racks.



  The cursor <B> 81 </B> is pushed backwards by an oscillating frame 104 (fig. 20) to bring the totalizer <B> 61 </B> engaged with the racks <B> 56. </B> This frame 104 is articulated on trunnions <B> 105 </B> of the frame. <B> He </B> carries a stopper <B> to </B> spring <B> 106 </B> can cooperate with a heel <B> 107 </B> united says cursor <B> 81 </B> (fig. 4). Eadre 104 sorrel <B> to </B> each cycle of the machine to move the stop back <B> 106. he </B> can be raised, to bring the stop <B> 106 </B> in line with the heel <B> 107, </B> by an extension (not shown) of the subtraction key <B> 1.08 </B> (fig. 2), or automatically in a manner described below.

    



  The mechanism also allows the operation of taking a total or sub-total, positive or negative, under the control of the addition stop key. <B> 99 </B> or the add key for a subtotal <B> 98. </B> Since no changes are planned <B> to </B> the known arrangement, it does not seem necessary to give a detailed description of this mechanism.



  Mitiplier mechanism.



  In the machine shown, the multiplication is carried out by repeated additions starting from the highest digit of the multiplier, and by reducing the multiplication by a factor <B> 10 </B> for each of the consecutive digits of the multiplier.



   <I> Registration </I> says multiplicand. (Fig. <B> 1, </B> 2 and, <B> 3.) </B> The first maneuver <B> to </B> to perform for a multiplication operation is the inscription of the multiplicand in the group of pins <B> 3ô </B> using the number keys <B> 30. </B> The multiplicand is located by writing its real digits followed by a number of zeros equal to the number of digits in the multiplier minus one. For example, if the multiplier has five digits-, four zeros must be entered after the very real ehif- of the multiplicand.

   Under these conditions, and if we take into account the fact that the multiplicand is reduced by a factor <B> 10 to </B> the end of the multiplication by each of the digits of the multiplier (that is to say that a zero is eliminated each time), it is understood that, during the multiplication by the last digit of the multiplier, bar <B> to </B> characters in the units column rises above zero. This raising of the bar <B> to </B> characters of the units is used to indicate the end (the multiplication in a way which will be described <B> more </B> away.



   <I> Registration </I> of the first <I> figure </I> of the multiplier.



       (Fig. <B> 1, </B> 2, <B> 11, </B> 12 and <B> 27.) </B> The multiplicand having been written on the pins <B> 33, </B> and the oscillating frame <B> 32 </B> having been suitably oriented with respect to the columns, the first digit of the multiplier is written on a cursor <B> 110 </B> wearing a net ma <B> 109 </B> (fig, <B> 1, </B> 2, <B> 11 </B> and 12), by moving <B> this </B> cursor backward by a number of di ,,,, i- sions equal <B> to </B> the value of the -digit multiplier.

   The cursor <B> 110 </B> presents a slide <B> 111 </B> by which it is guided on a pin 112 of the frame. <B> He </B> is also guided by three bro- elies <B> 113, </B> one of which has a head, and which overlaps a slide 114 fixed <B> to </B> spindle 112 and on the machine frame, The core <B> 110 </B> normally occupies the position <B> 0. </B> When moved from zero to any real number, it sets the print control units so that subsequent cycles, except the return cycle <B> to </B> zero,

   are cycles of non-printing. The posterior end <B> of </B> cursor <B> 110 </B> presents an oblique ramp so that, in the position <B> 0, </B> this cursor is released with a 1, # alet <B> 115 </B> mounted on a lever <B> 116 </B> articulated on a fixed journal <B> 117. </B> When the cursor <B> 110 </B> is moved one or more divisions back to a corresponding position <B> to </B> a number, the oblique ramp raises the pebble <B> 115 </B> to rotate the lever <B> 116 </B> in the opposite direction <B> to </B> clockwise and to lower the end, posterior out of the path of a sliding bar <B> 118 </B> (see also fig. <B> 27)

  . </B> The bar <B> 118 </B> is fixed <B> to </B> a cursor <B> 119 </B> which can move to the left on two screws 120 integral with the machine frame. In the normal position of the bar <B> 118, </B> a notch 121 thereof is placed opposite a slider 122 biased by a spring and intended <B> to </B> move the paper forward.

    The cursor 122 is maintained in the position of FIG. 12, and released to move back during each cycle of the machine, by a roller <B> 123 </B> mounted on a plate 124 connected by a connecting rod <B> 125 to </B> a turntable <B> 126 </B> key to the main tree <B> 96. </B> When released, it engages in notch 121 of the bar <B> 118. </B> In its return movement, it turns the striking cylinder <B> 52 </B> via a lever <B> 127, </B> # of an eliquet <B> 128, </B> and a rock <B> 129 </B> integral with the cylinder.



  Bar <B> 118 </B> also controls the strike hammers 54 to determine the non-printing operation. During printing # opera tions, the impact hammers 54 are retained and released at the appropriate times by a bar <B> 133 </B> superimposed on the ta lons 134 of hammers 54.

   This bar <B> 133 </B> is brought into engagement with the hammers 54 and <B> de- </B> secured with these hammers by a lever <B> 135 </B> for a ratchet <B> 136. </B> A-Li start of the main shaft return movement <B> 96, </B> a finger <B> 137 </B> ensuring the connection between the plate <B> 126 </B> and the connecting rod <B> 125 </B> cooperates with a heel <B> 138 </B> of the cli- qaet <B> 136 </B> to rotate this one and the-% Îer <B> 135 </B> clockwise, and to release the bar <B> 133 </B> heels 134,

   which triggers the printing of the num ber written on the bars <B> to </B> characters <B> 35. </B> A lever <B> 139 </B> is normally retained by a finger 140 of the plate 124 engaged under its posterior end, in order to prevent it from turning anti-clockwise without the action of a res sort 141 , this lever cooperating with a finger 142 of the pawl <B> 136. </B> A movement of the lever <B> 139 </B> in the opposite direction <B> to </B> the clockwise one causes the click to lift <B> 136 </B> to a finger spread position <B> 137 </B> of the turntable <B> 126, </B> so that the bar 113) 3 is not actuated to release the striking hammers 54 for printing.

   Bar <B> 118 </B> presents a block 143 (fig. <B> 27) </B> nor badly placed under a 1.44 tab says the vier <B> 139, </B> which prevents any movement called lever <B> 139 </B> in the direction of disengaging the printing mechanism.



  When the bar <B> 118 </B> moves to the left, which takes place during the multiplication or -division cycles in a manner described later, it arrives at a position in which the cursor 122, intended <B> to </B> feed the paper, is blocked by a full part 145 of the bar <B> 118, </B> while the lan watches 144 says lever <B> 139 </B> engages in slot 121, which disengages the mechanism, driving the striking cylinder and the printing hammers.

   When the bar <B> 118 </B> is blocked by the lever <B> 116 </B> during the operation in which the curseLir-mul- tiplier <B> 110 </B> occupies the position <B> 0, </B> it is placed in the middle between the two extreme positions. In this position, block 143 always stops the lever. <B> 139 </B> to allow clearance of the printing hammers, and <B> the </B> cursor 1212 is aligned with a second notch 146 of the bar <B> 118 </B> to allow the cylinder drive <B> de- </B> hit by cursor 122.

   The impression and the driving of the striking cylinder therefore take place in this bar position. <B> 118. </B>



  A relocation <B> says </B> slider-multiplier <B> 110 </B> backwards starting from position <B> 0 </B> also moves a finger 147 (fig. <B> 11 </B> and 12) of the cursor <B> 110 </B> to move it away from a branch of a lever 148 articulated on a roof-roof 149.

   The lever 148 is connected by a res sort <B> 150 to </B> a lever <B> 151 </B> and wears a finger <B> 152 </B> can cooperate with the upper branch of the lever <B> 151 </B> to determine the 111- mite called relative displacement between the two levers. TTn spring <B> 153 </B> hanging on a lever <B> 1.51 </B> recalls levers 148 and <B> 151 </B> to a position in the opposite direction <B> to </B> that of the needles <B> C </B> of a watch, towards which the lever 148 small <B> himself, </B> move when the finger 147 is away from this lever 148.

   In this position, a finger 154 of the upper branch of the lever <B> 151 </B> comes to stand behind a tier <B> 155 </B> of her arm <B> 156, </B> while the lower branch advances a connecting rod <B> 157 </B> whose purpose will be described <B> more </B> away. <I> Button operation </I> <I> of </I> midtiplication.



       (Fig. <B> 8 to 121, </B> 14, <B> 16 to 19, 213 to 25 </B> and 28.) After entering the two multiplication factors in the manner previously described, the machine is started by operating the multiplication key. <B> 160 </B> (fig. <B> 1, </B> 2, 4 and <B> 11) </B> to calculate the product (the these factors.

   Lowering this key <B> 160 </B> determines the position of a cradle of militia <B> 161 </B> (fig. <B> 11) </B> by the cooperation of Lin Finger <B> 162 </B> of the key <B> 160 </B> with a branch of a lever <B> 163 </B> connected by a connecting rod 164 <B> to </B> linen trunnion <B> 165 </B> -from the cradle <B> 161. </B> This is kept in its working position, <B> to </B> the-ii- against the action of its return spring 161a, by a locking lever <B> 166 </B> co-operating with the journal <B> 165 </B> of the cradle <B> 1.61. </B>



  When it occupies its working position, the multiplication cradle <B> 161 </B> keeps the machine's controls in the required position <B> to </B> multiplication. A phase of this control is the disengagement of the return mechanism of the oscillating frame. <B> 32 </B> towards the starting position and, consequently, of the recall of the pins <B> 33 </B> towards the rest position. The oscillating frame <B> 32 </B> (fig. <B> 8) </B> is pro skirted by an arm <B> 190 </B> wearing a finger <B> 191 </B> engaged in a slow <B> 192 </B> cl * a cursor <B> 193. </B> The cursor <B> 193 </B> moves back when the frame oscillates <B> 32 </B> moves while writing a number on pins 33, and moves forward to bring the frame back, <B> 32 </B> and the pins <B> 33 to </B> the starting position.

   Normally the cursor <B> 193 </B> is advanced to the end of a machine cycle by a lever <B> to </B> notch 194 cooperating with, this linen heel <B> 195 </B> (fig. <B> 9) </B> cursor <B> 193. </B> The vier 194 is articulated <B> to </B> an angled lever <B> 196 </B> and recalled from bottom to top by a spring <B> 197 </B> to be applied against the heel <B> 195. </B> In], in the normal position of the mechanism, the angled lever <B> 196 </B> occupies its position reached by turning clockwise, in which its posterior branch is pressed against a roller <B> 198 </B> of the turntable <B> 1.26 </B> integral with the main shaft <B> 96,

   </B> the lever 194 being maintained in its anterior position and away from the heel <B> 195 </B> of cursor 19 ") by a branch <B> 199 </B> the angled lever <B> 196. </B> The initial movement of rotation of Farbre <B> 96 </B> clockwise rotates the elbow lever <B> 196 </B> in the opposite direction <B> to </B> the one clockwise to remove the branch <B> 199 </B> lever 194 and to allow <B> to </B> the latter to rise to a position limited by the contact of its upper edge with the repeat key 201 (fig. <B> 1)

  . </B> 'An additional movement - of the angled lever <B> 196 </B> moves the lever 194 back to a point beyond the displacement of the heel 195 of the cur-, eur <B> 193. </B> While the angled lever is recalled <B> 196 </B> by the spring <B> 197 </B> and another spring 200, the lever 194 cooperates with the heel <B> 195 </B> and ra leads the cursor <B> 193 </B> and the oscillating frame <B> 32 to </B> the starting position.

   Towards the end of this movement, the branch <B> 199 </B> the angled lever <B> 196 </B> .1lower lever 194 to release the slider <B> 193 </B> for consecutive movement using the keys <B> 30. </B>



  The return mechanism is disengaged by cradle <B> 161 </B> when set by the multiplication total <B> 160. </B> A lever '202 (fig. <B> 9) </B> has one end facing the cradle <B> 161 </B> to be moved by it when set, while its other end is engaged in a slow clapboard end # of an angled lever <B> 203 </B> Articulated to the left side of the machine frame. This angled lever 200 'carries a roll 204 superposed a-Li lever 194 of the return mechanism.

    When lever 202 is moved by the cradle <B> 161, </B> the roller 204 is lowered to keep the lever 194 in the inactive position relative to the cursor <B> 193, </B> so that the callback mechanism is disengaged.



  When the multiplication cradle is in its adjustment position, it also allows <B> to </B> a mechanism to bring back the oscillating frame <B> 32 </B> one step towards the starting position. As shown in Figs. <B> 9 </B> and <B> 10, </B> the cursor 19Ô present on its edge <B> sup- </B> is a row of ratchet teeth 208. 'A touch of backspacing <B> 209 </B> is wearing a <B> cli- </B> quet 210 normally clear of the teeth:

  1.08, but can be brought into engagement with 3rd teeth by lowering the button <B> 209. </B> ITu further lowering of the key <B> 209 </B> move the cursor <B> 193 </B> to bring back the frame <B> 32 </B> one step towards the starting position, which actually reduces the setting by an equal factor <B> to 10. </B> At the bottom of the turret race <B> 209, </B> a second tooth of the ratchet 21.0 engages a second row of teeth 211 of the slider <B> 193 </B> to prevent this one from going too far.

   The key <B> 209 </B> is activated automatically for backspacing of the inscription mechanism under the control of the cursor-maltiplier <B> 110 </B> and had the cradle of multiplication <B> 161. </B>



  In fig. 14, <B> 23 </B> and 24, we see that the cradle <B> 161 </B> present at the top and <B> to </B> straight -a hook 212 superimposed <B> to </B> a finger <B> 213 </B> a lever 214. This lever is integral with a shaft <B> 215 </B> extending to the left of the machine and biased clockwise (in fig. <B> 23 </B> and 24) by a spring <B> 216 </B> hanging <B> to </B> an arm <B> 217 to </B> the left end of the tree <B> 215. </B> A connecting rod <B> 218, </B> articulated <B> to </B> the end of the lever <B> 217, </B> is connected by a joint <B> to </B> spindle and slide <B> to </B> an angled lever <B> 219 </B> articulated on a fixed journal 220.

    The other end of the spring <B> 216 </B> is hooked to the angled lever <B> 219 </B> to keep the threads in the position shown. One finger cursor 221 <B> 110 </B> moving forward from position <B> 0 </B> (fig. <B> 25) </B> cooperates with the rising arm of the angled lever <B> 219 </B> to rotate it clockwise and to rotate the shaft <B> 215 </B> clockwise through the spring <B> 216. </B> When the cradle of multiplication <B> 161 </B> occupies his working position,

   the upper hook of this cradle is released from the finger <B> 213. </B> When the tree <B> 215 </B> is requested in the manner previously described, <B> the </B> finger <B> 213 </B> is high. This finger <B> 213 </B> is freely engaged in a slot 222 of a slider <B> 223. </B> When raised it also elevates the posterior end of the slider 223 <B> to </B> the position shown in fig. 24. The anterior end of the cursor <B> 223 </B> is connected <B> to </B> a # e- uier 224 united with a tree <B> 225 </B> crossing the left side of the machine.

   The end (the left of the shaft <B> 225 </B> carries another lever <B> 226 </B> to which a descending rod is articulated <B> 227 </B> with a slit <B> 228 </B> riding singing a finger <B> 229 </B> integral with the key (the retro-spacing <B> 209. </B>



  The cursor <B> 223 </B> is moved backward To lower the backspace key <B> 209, </B> via elements 224, <B> 225, </B> <B> 226 </B> and <B> 227, at </B> using a motor finger <B> 230. </B> This finger is integral with an articulated plate <B> 231 </B> requested by a spring <B> 232 </B> towards the position shown in fig. <B> 23. </B> Towards the end of each cycle of the machine, it is moved in the direction of clockwise by a finger 2'33 secured to a plate 234 fixed <B> to </B> the main tree <B> 96. </B> When the posterior end of the slider <B> 223 </B> is raised by cursor movement <B> 110 </B> starting from position <B> 0,

   </B> the end of the cursor <B> 223 </B> is brought into alignment with the finger <B> 230, </B> so that the cur sor <B> 223 </B> and, therefore, the backspace key <B> 209, </B> are activated towards the end of the machine cycle.



  When advanced, the cradle of malti- <B> 161 </B> also activates the non-printing mechanism to prevent printing. As shown in Figs. 14 and <B> 19, </B> a 23Ô connecting rod is connected <B> to </B> a pin on the right side of the cradle <B> 161. </B> It is pulled forward when the cradle is moved forward.

    This connecting rod is connected <B> to </B> a lock 234 having a hook end cooperating with a branch of a bent lever <B> 2Ô5 </B> linked to the non-printing cursor <B> 119. </B> Lock 234 holds the cursor <B> 119 </B> in the position of fig. <B> 19 </B> during the addition and subtraction cycles.

   When the lock 234 is released by the cradle <B> 161, </B> the cursor <B> 119 </B> can move freely to the non-printing position, but it is retained in the normal position by a spring <B> 236 </B> connected to the bent vier <B> 235. </B> During cycles carried out with the 2ô4 lock retracted, the slider <B> 119 </B> is moved to the left <B> to </B> the final non-printing position or <B> to </B> the partial position against the lever <B> 116 </B> (fig. 12) for printing, by a lever <B> 237 </B> urged from bottom to top by a spring <B> 238 </B> able to overcome the tension of the spring <B> 236, </B> the lever <B> 237 </B> remaining applied against the lower edge of a connecting rod <B> 239 </B> descending from the angled lever <B> 235.

   The </B> lever <B> 237 </B> is retained in its iiiac- tive position by the cooperation of a roller 240 with the lower branch of the lever <B> 237. </B> The roller 240 is mounted on a drive plate 241. <B> He </B> is usually advanced and then reversed to push the cursor <B> 119 </B> to the left and to bring it back to the right during each cycle of the machine in which the multiplication cradle is itself advanced.



  The advancement movement of the cradle <B> 161 </B> action-not also a mechanism intended <B> to </B> keep an eliquet in the relaxed position <B> of </B> the cycle conipteuse bar.

   This cycle counter bar 242 (fig. <B> 16, 17, 18 </B> and <B> 19) </B> presents itself in such a milar gleneral form <B> to </B> that of the bars <B> to </B> characters <B> 35 </B> and door <B> to </B> its upper end has decimals going normally. of <B> 0 to </B> <B> 9 </B> and an ER character. This 242 bar is raised dLin steps per cycle <B> to </B> using a mechanism described below. During the multiplication cycles, it is held in the advanced positions by a pawl -943 engaging a row of notches 9-44 sized in the leading edge of the bar 242.

    The pawl 243 is winged on a shaft 246. <B> He </B> is biased by a spring 247 in the direction of the notches 244. Normally, it is however kept away from the notches 244 by a finger 24S integral with a lever 249 fixed. <B> to </B> shaft 246. This shaft 246 is driven clockwise (in fig. <B> 19) </B> by a lever <B> 250 </B> presenting <B> to </B> one end a fork <B> '251 </B> straddling a crankpin <B> 252 </B> secured to another lever <B> 253 </B> fixed <B> to </B> tree 246.

         <B> A </B> the upper end of the lever <B> 250 </B> a connecting rod is articulated <B> to </B> hook 254 wearing a finger <B> 255 </B> and whose hook is normally placed <B> to </B> the back of a finger <B> 256 </B> integral with the plate 2241, in the manner indicated in FIG. 14. In this position of the connecting rod 254, <B> the </B> platinum 241 positively brings back, <B> to </B> at the end of each cycle, the lever <B> 250 to </B> the position shown in fig. <B> 19 </B> to release the pawl <B> 2-13 </B> of bar 242.

   When the multiplication cradle <B> 161 </B> is advanced, it rotates the locking lever, 234 in the manner previously described to raise the connecting rod 2) 4 via a connecting rod <B> 257 </B> re tied to the finger <B> 255 </B> and lever 234. In this position, the connecting rod 254 is released from the finger <B> 256 and </B> she is not called back to free 'the bar account-Lise 242.



  When lowered, the <B> 160 </B> also lowers the no-add key <B> 99 </B> (fi-. <B> 11), </B> so that the first cycle of the machine becomes. a cycle of non-addition. A lever <B> 167 </B> artieulé <B> to </B> the key <B> 160 </B> presents a tier <B> 168 </B> normally placed over a finger <B> 169 </B> fixed <B> to </B> the key <B> 99 </B> to constitute a one-way coupling device between these two keys.

   The non-addition button <B> 99 </B> is kept lowered by the usual locking slider <B> 170 </B> <B> (fi-. 15) </B> released periodically, but no lock is provided for the key <B> 160, </B> (the so that this returns <B> to </B> the position <B> of </B> rest as soon as the operator removes the finger. A connecting rod <B> 159 </B> is inserted between the lever <B> 167 </B> and the non-addition slider 102 to remove the lever <B> 167 </B> finger <B> 169 </B> during the non-addition cycle, to allow recall <B> of </B> 'the key <B> 99, </B> even if the key <B> 160 </B> is lowered bare hand.



  When lowered, the <B> 160 </B> also provides a mechanism to move the cursor-multiplier 110 from a forward position to the starting position. A second lever <B> 171 </B> (fig. <B> 11), </B> similar to lever <B> 167, </B> is fixed <B> to </B> this one and superimposed <B> to </B> a branch <B> 172 </B> dLin caliper <B> 173, </B> so that lowering the key <B> 160 </B> rotate Pétrier <B> 173 </B> in the opposite direction <B> to </B> the clockwise one.

   Branch 174 on the left side of the stirrup <B> 173 </B> has a shoulder <B> 175 </B> normally placed in front of a journal <B> 176 </B> a lever <B> 177 </B> of the mechanism controlling the multiplier cursor. Branch 174 is moved by the key <B> 160 </B> to deviate from the path of the journal <B> 176 </B> and to allow the displacement of the cur sor <B> 110. </B> The stirrup <B> 173 </B> is held in its working position by a locking lever <B> 178 </B> which hangs on a square finger <B> 1.79 </B> da lever 174 in the working position of the caliper <B> 173. </B>



  The operation of the caliper <B> 173 </B> also allows <B> to </B> a mechanism to maintain <B> de- </B> Brayed a main coupling device (not shown) for the cycles until the multiplication operation is completed. This coupling device is disengaged, as in the usual Sundstrand machines, by an advancing movement of a connecting rod. <B> 1.80 </B> (fig. <B> 10 </B> and <B> 11) to </B> using one of the motorized control keys, via an articulated rod <B> 181 </B> that these keys rotate.

       Since the key <B> 99 </B> operated by the multiplication key <B> 160 </B> is a motorized key of this kind, the operation of the key <B> 160 </B> rotate the trin gle <B> 181, </B> which is maintained in the new position by a step <B> 182 </B> rusting worm lever <B> 178, </B> the tier coming to be placed behind the rod <B> 181 </B> when the lever <B> 178 de- </B> place the locking arm 174 of the caliper.



  Lowering the multiplication key <B> 160 </B> also intervenes to activate a mechanism allowing the release of the multiplication cradle <B> 161 </B> at the appropriate time, that is, after registration (the all digits of the multiplier.

   As shown in Figs. <B> He </B> and 12 and as indicated previously, the -in place of the cursor <B> 110 </B> on a real figure allows the spring <B> 153 </B> to rotate <B> the </B> lever <B> 151 </B> in the opposite direction <B> to </B> that of the needles of-Lrae
EMI0011.0039
  
    watch, <SEP> for <SEP> place <SEP> on <SEP> finger <SEP> 154 <SEP> behind <SEP> <U> the </U>
 <tb> tier <SEP> <B> 155 </B> <SEP> of <SEP> lever <SEP> <B> 156. </B> <SEP> Cel # L1i # -c * <SEP> <B> é </B>
 <tb> by <SEP> a <SEP> spring <SEP> <B> 183 </B> <SEP> <U> da-n_aJ - ns </U> <SEP> <B> e </B> <SEP> ontraire <SEP> <B> to </B> <SEP> clockwise,

   and it is normally held in its upper position by a latch 184 which engages under a heel of the upper part of the lever. <B> 156. </B> Lock 184 has a branch <B> 185 </B> (see also fig. <B> 5) </B> elbow down <B> to </B> side of a finger <B> 186 of </B> the key <B> 160, </B> so that lowering the key <B> 160 </B> rotate latch 184 to release the lever <B> 156. </B> This released lever holds the lever <B> 151 </B> in the working position until it is raised by the cooperation of a finger <B> 187 </B> cursor <B> 110 </B> with the angled posterior branch of the lever <B> 156,

   </B> while moving the cursear <B> 110 </B> of the position <B> 0 </B> to a more advanced position of decimal places. Since this mechanism does not intervene to free the multiplication cradle <B> 161 </B> that after the end of the multiplication, the description of the functioning of these organs will be repeated later. Preinier <I> cycle </I> multiplication.



  By pressing the non-addition key 019, lowering the multiplication key <B> 160 </B> initiated a cycle of the machine through the rod <B> 181 </B> and the connecting rod <B> 180. </B> During this cycle, the tree <B> 96 </B> turns in the opposite direction <B> to </B> that of the hands of a clock (fig. <B> 6) </B> by rotating the plate 2-11 clockwise. The plate 124 (fig. 12) swivels in the opposite direction and the plate <B> 126 </B> clockwise.

   At the start of the cycle, the totalizer <B> 61 </B> is clear of the racks <B> 55 </B> and <B> 56 </B> by the pawl 94 (fig. 4) acting on the finger 92.



  The striking cylinder drive and impact hammer release mechanisms are disengaged at the start of the cycle by the bar <B> 118 </B> and the cursor <B> 119 </B> (fig. <B> 19) </B> se <B> de- </B> placing to the left. The roller 240 of the plate 241 releases the lever <B> 237 </B> during the <B> de- </B> placement of plate 241, and the spring <B> 238 </B> then intervenes to rotate the lever <B> 237 </B> clockwise and, p # qur rotate the lever <B> 235 </B> through
EMI0012.0020
  
    diairè - #, - 1a <SEP> <B> __ </B> <SEP> connecting rod <SEP> <B> 239, </B> <SEP> while <SEP> qi - te <SEP> on <SEP> cursor
 <tb> <B> 119 </B> <SEP> se <SEP> move-V # WQL-la- <SEP> left.

    <SEP> The <SEP> lever <SEP> <B> '235 </B> has meanwhile been unlocked by the locking lever 234 as the multi plication cradle <B> 161 </B> rotated via connecting rod <B> 233, </B> de, as previously described. Since the lever <B> 116 </B> (fig. 12)

   has been taken off the bar <B> 118 </B> by moving the slider-multiplier <B> 110. </B> this bar <B> 118 </B> can move freely to the extreme position <B> to </B> left to prevent the advance of the paper and the release of the printing hammers.



   <B> A </B> this moment, the cursor-multiplicate <B> 110 </B> was brought back one step towards the position (the start. Figs. <B> 11, </B> 12, <B> 23, </B> 24 and <B> 28 </B> show that the platinum <B> 126 </B> of the main shaft <B> 96 </B> carries a scroll <B> 260 </B> initially a little spaced with a bent branch of a lever <B> 261. </B> This lever <B> 261 </B> is articulated on a journal <B> 262 </B> and recalled by a spring <B> 263 </B> against a fixed finger 264.

   On the journal <B> 262 </B> the lever is also articulated <B> 177 </B> recalled by a res sort <B> 266, </B> so that its anterior edge is applied against a finger. <B> 267 </B> the lever <B> 261. </B> The journal <B> 176 </B> previously indicated is attached to the lever <B> 177. </B> On this journal is articulated a ratchet <B> 268 </B> requested in the opposite direction <B> to </B> that of the hands of a watch by a spring <B> 269 </B> to be applied against Lin fixed finger <B> 270, </B> the beak <B> 271 </B> of the eliquet <B> 2268 </B> being, in this position,

   free from a row of teeth <B> 272 </B> spared on the lower edge of the cursear-multiplier <B> 110. </B> When the branch 174 of the stirrup <B> 173 </B> was brought <B> to </B> <B> the, </B> inactive position in relation to the finger <B> 176 </B> after pressing the key <B> of </B> multiplication <B> 160 </B> and locked in this position by the lever <B> 178, </B> the turntable <B> 126 </B> during the cycle is transmitted by the roller <B> 260 </B> to the levers <B> 261 </B> and <B> 177 </B> clockwise (clockwise to advance <B> the </B> ratchet <B> 268. </B> Grace <B> to </B> the conformation of the upper edge of the pawl <B> 268, </B> his movement of advance spreads him with his finger <B> 270,

   </B> and it swivels up and down to engage its beak <B> 271 </B> between two teeth <B> 272 </B> says cursor <B> 110. </B> Following the movement of the plate <B> 126 </B> and the pivoting of the levers <B> 261 </B> and <B> 177 </B> move the cursor <B> 110 </B> of yeah not. The spring <B> 266 </B> inter- ealé between the levers <B> 261 </B> and <B> 177 </B> forms a flexible connection between these levers to prevent damage if the slider <B> 110 </B> is blocked or if the finger <B> 176 </B> is locked by lever 174.



  During the first half-cycle, the bar <B> to </B> characters counting 242 (fig. <B> 16, 17 </B> and <B> 19) </B> is high <B> to </B> print position <B> 0, </B> and the pawl 243 of the bar 242 is placed in the retaining position.

   The pivoting of the locking lever 234, produced by the advancement of the multiplication cradle <B> 161, </B> raised his arm <B> to </B> hook 254 for the de.-a.ger of the finger <B> 256 </B> of plate 241, so that the lever <B> 250 </B> small remain freely in any adjustment position, a lever <B> to </B> eu- coehe <B> 273, </B> biased by a spring 274 for pulling held in engagement with a finger <B> 275 to </B> 1- "end, upper # of lever <B> 250,

   </B> hold the lever <B> 250 </B> elastically in all <B> Po- </B> adjustment positions. A cursor <B> 276 </B> is requested by a spring <B> 277 </B> to the left of fig. <B> 19. </B> This cursor is based on two fingers <B> 278 </B> and <B> 279, </B> the first of which is integral with the lever <B> 250 </B> and the second from plate 2-11. The cursor <B> 276 </B> presents a slide <B> 280 </B> engaged on the finger <B> 278. </B> The length of this slide is chosen such as the lever <B> 250 </B> can oscillate freely between the starting position and a position. intermediate.

   The cursor <B> 276 </B> also presents -a curved slide <B> 281 </B> engaged on the, doiL-It <B> 279 </B> of plate 241. The length of this slide is sufficient to allow <B> to </B> the plate 241 to oscillate freely from one end <B> ù </B> the other without moving the cursor <B> 276, </B> the doi-gt, <B> 279 </B> cooperating with the posterior end <B> (the </B> the backstage <B> 281 </B> to recall the cursor <B> 276 </B> from any forward position.

       The posterior end of the cursor <B> 276 </B> is bent to form a tongue <B> 282 </B> normally remaining <B> to </B> the back of a lower branch of the lever <B> 235. </B> When the lever <B> 235 </B> rotates at the start of a cycle as above <I> described, </I> the cursor <B> 276 </B> is free to follow the finger <B> 279 </B> under its own initiative <B> 277. </B> During this movement, the cooperation of the posterior end of the slide <B> 280 </B> with your finger <B> 278 </B> rotate the lever <B> 250 </B> starting from the posterior position, passing through the intermediate position,

   to a fully advanced position shown in fig. <B> 16. </B> This movement of the lever <B> 250 </B> rotates the shaft 246 to move the finger 248 of the lever 249 and to allow the engagement of the ratchet 243 with the bar 242 in order to hold it in any adjustment position.



  Lever movement <B> 250 </B> towards the fully advanced position milk also advance the bar 242 to bring the character <B> 0 to </B> the print position. The lever 249 of the shaft 246 carries an advancement pawl <B> 283. </B> In the rest position of the shaft 246 and the lever <B> 250, </B> the ratchet <B> 283 </B> is biased by a spring 284 (fig. <B> 18) </B> against the upper end of lever 249. It is brought into engagement with teeth 244 of bar 242 when Parbre 246 is moved to an intermediate position.

   The so-called lever movement <B> 250 </B> to the fully advanced position further rotates shaft 246 and raises the pawl <B> 283 </B> to raise the bar <B> to </B> 242 characters of a step, <B> of </B> way that the character <B> 0 </B> is placed next to the printing point. The ratchet 243, also released <B> to </B> this moment, maintains the bar at this point. The return of plate 241 to the starting position <B> to </B> the end of <B> cy- </B> key recalls the cursor <B> 276 to </B> its rest position, while the lever <B> 250 </B> is not fully recalled. The game between the finger <B> 278 </B> and. the slide 280 is chosen such that the lever <B> 250 </B> only returns to the intermediate position, thus leaving the pawl 243 in its retaining position.

   The lever <B> 250 </B> cannot be brought back <B> to </B> the starting position only by the cooperation of the finger <B> 256 </B> and leverage <B> to </B> hook 254, but the latter is raised <B> to </B> this moment by the locking lever 234, so that the lever <B> 250 </B> Only partially recalled.



  During this first cycle, the non-addition key <B> 99 </B> remains lowered, because it was lowered by the multiplication key <B> 160 </B> and that it is locked in this position. The non-addition key being lowered, the cursor 102 (fig. 4) is placed in its posterior position, in which the pawl <B> 9-1 </B> is prevented during the second half of the cycle from cooperating with the finger 9 ") to drive the totalizer <B> 61 </B> engaged with the addition sliders <B> 55. </B> As a result, this first cycle is a non-addition cycle,

       even if the bars <B> to </B> characters <B> 35 </B> are advanced to the positions determined by the pins <B> 33. </B> Totalizer # 61 is recalled, <B> to </B> the end of the cycle, to mesh with the crisscrosses <B> 55, </B> by the usual mechanism consisting of a lever <B> 285 </B> (fig. <B> 6) </B> with an elbow lon <B> 286 </B> which can cooperate with the lower edge of the plate <B> 95 to </B> the end of the cycle, and connected by a connecting rod <B> 287 to </B> the turntable <B> 90. </B> The no-addition key <B> 99 </B> is released to return <B> to </B> the rest position <B> to </B> the in <B> says </B> cycle. <I> Following multiplication cycles. </I>



  A second cycle occurs automatically <B> to </B> the end of the first cycle of multiplication which still lives to be described. <B> He </B> should remember that the rod <B> 181 </B> and the connecting rod <B> 180 </B> are locked in their working position <B> a </B> ,, near the pivoting of the locking lever <B> 178 </B> (fig. <B> 11). </B> The lever <B> 178 </B> Wétant not esca moté <B> to </B> At this point, a second cycle follows automatically.

   This second cycle and all subsequent cycles, except the last cycle of Multiplier Digit Inscribing, are all key repeats of the first cycle described, with the sole exception that the no-add key These 99 are therefore not lower cycles for addition,

          these cycles' the registered multiplicand being introduced <B> to </B> each cycle by addition in the totalizer <B> 61. </B>



  As previously described, the printing mechanism is also <B> de- </B> brayed, during each cycle. The slider-multiplier <B> 110 </B> is returned one step to the starting position, and the counting bar 2-12 is raised one step to successively bring the characters <B> 37 </B> at the point of printing. <I> Last cycle of multiplication. </I> (Fig. 12, 14, <B> 19, 23, 26 </B> and <B> 27.) </B> <B> c </B> The last cycle of multiplication by the first digit of the multiplier begins with the eurseur-multiplier <B> 110 to </B> the starting position or position <B> 0.

   AT </B> At this time, the machine has executed a number of key cycles equal to the number entered. However, since the first cycle is a rion-add cycle, an additional cycle is required to introduce the multiplicand the appropriate number of times. Likewise, the count bar 242 is set to print a digit one less than the number of cycles performed and should be increased to the appropriate digit.



  During the latter the printing mechanism is set up for printing the multiplicand and the multiplier. Since the euror-multiplier occupies <B> the </B> position <B> 0 </B> at the beginning (the cycle, its posterior end (fig. 12 and <B> 9-7) </B> don't hold the lever <B> 116 to </B> the forward position, so that the posterior end of this vier <B> 116 </B> stop the bar <B> 1.18 </B> in its intermediate position.

   In this middle position, the striking eyeliner drive mechanism and the striking hammer release mechanism can be actuated so that the multiplicand is printed just after the middle of the cycle.

   Lever movement <B> 235 </B> is sufficient to release the eur- sor <B> 9-76 </B> (fig. <B> 19), </B> and the machine bar * 242 is raised an additional step to ensure the appropriate character on the pressure line. After releasing the hammers 54, the multiplicand and the appropriate number of the multiplier are printed on the paper placed on the cylinder <B> <U> 5 ". </U> </B>



  When the cursor-multiplier <B> 110 </B> is brought back during this last cycle, it moves from the position <B> 0 </B> to a sub-normal position. The eurseur <B> 110 </B> is retained in this subilormal position by a lock <B> 290 </B> (fi-. <B> 23 </B> and 26) almost until the end of <B> cy- </B> key.

   This lock is biased by a spring <B> 291 </B> in the opposite direction <B> to </B> the one clockwise so that its front end is angled <B> 292 </B> is applied against the notched postero-inferior slice of the eur- sor <B> 110. </B> The lock is normally held apart by the roller <B> 260 </B> of the turntable <B> 126 </B> cooperating with its posterior end.

         A-Li start of the cycle, the roller <B> 260 </B> free the <B> 2.90 </B> to allow him to cooperate with <B> the </B> cursor <B> 110 </B> (fig. <B> -96). </B> When the eur- security <B> 110 </B> - moves to the sub-normal position, it is locked in this position by the heel <B> 292 </B> meshing with one of the notches in the end of the core <B> 110. </B> The cursor <B> 110 </B> is reminded <B> to </B> the position <B> 0 </B> normal by a roll <B> 293 </B> (fig. 12) mounted on a lever 294.

   This lever 294 is biased from bottom to top by a spring <B> 295, </B> and the roller <B> 293 </B> normally cooperates with (slow-, <B> '272 </B> cursor <B> 110 </B> to keep it in its adjustment position. As the cursor moves to the sribnoral position, an inclined ramp <B> 296 </B> of the lower edge smooths the roll <B> 293 </B> down. When the lock <B> 290 </B> is released <B> to </B> the end of e # -ele, the lever <B> to </B> spring 294 and the roller <B> 293 </B> intervene to bring the cursor back <B> 110 to </B> the position <B> 0. </B>



  While moving to the subnormal position, the cursor <B> 110 </B> releases the locking lever <B> 178 </B> by the cooperation of a finger <B> 265 11) </B> cl-Lu cursor <B> 110 </B> with a bran- elie <B> 297 </B> integral with the lever <B> 178. </B> Once li- l # Cir6, the lever <B> 178 </B> free <B> to </B> turn the branch <B> 17-1 </B> stirrup <B> 173,

   </B> which rises opposite the finger <B> 176 </B> and stop any additional movement of the advancement eliquet <B> 268 </B> for the eiirseur <B> 110. </B> The anterior end -, read lever <B> 1.78 </B> move away from the rod <B> 181 </B> to release it and also to release the connecting rod <B> 180 </B> allowing the intervention <B> da </B> stopping mechanism <B> the </B> cycle and. the multiplication <B> to </B> the end of the current cycle.



  In its sulmormal position, 'the cursor <B> 110 </B> <U> clear </U> also the latch branch 1.36 of the finger 154 integral with the lever <B> 151. </B> However, since this mechanism only comes into play when. the multiplication is completed, the description of this operation will be repeated later.



  In its subnornial position, the cursor <B> 110 </B> conditionally, aleriient the mechanism of retro-spacing of the frame, oscillating <B> 32. </B> The f ',,. 2 'and <B> 25 </B> show that the doi.gt 221 of the eurseur <B> 110 </B> rotate the lever <B> 219 </B> when <B> the </B> cursor <B> 110 </B> <I> se </I> move to the sub-normal position.

   Via the spring <B> 216, </B> dui lever <B> 217, from </B> the tree <B> 215 </B> and lever 214, this lever <B> 219 </B> raise the cursor <B> 223. </B> It should be remembered that the lever 214 was released by <B> the </B> moving the multiplication cradle to the advanced position. This cradle being advanced <B> to </B> At this time, the lever is still open.

   The cursor <B> 223 </B> is raised to bring its posterior end <B> to </B> the back of the 2ÔO finger of the plate <B> 231. </B> This being moved angularly <B> to </B> at the end of a cycle as described above, the cursor <B> 223 </B> is actuated to act on the key <B> 209 </B> and to bring back the oscillating frame <B> 32 </B> one step towards the starting position.



  When operated in this manner to backspace the swing frame <B> -32, </B> the cursor <B> 223 </B> also releases the pawl 243 (fig. 14 and <B> 19). </B> When the cursor <B> 223 </B> is high, his heel <B> 298 </B> is aligned with a finger <B> 299 </B> the lever <B> 250. </B> During the retraction of the cur- sor <B> 223 </B> under the action of the finger <B> 230 to </B> the end of the cycle, the heel <B> 298 </B> push the finger <B> 299 </B> and bring back the lever <B> 250 to </B> the rest position, thus releasing the pawl 243 and the advancement pawl <B> 283.

   he </B> as a result that the. 242 counter bar is <B> to </B> his turn released and back <B> to </B> the starting position under the action <I> at </I> its spring. Since this movement takes place after disengaging the printing hammers, nothing will interfere with printing the correct number.



   <B> A </B> at the end of this cycle, the coupling device is stopped and stops <B> to </B> in turn the operating cycles of the machine. The cursor <B> 110 </B> is <B> cleared </B> of the lock <B> 290 </B> and turn around <B> to </B> the position <B> 0. </B> The backspacing cursor <B> 223 </B> go down <B> to </B> his position as <B> de- </B> leaves, and the machine is thus prepared for the introduction of the second digit of the multiplier, <B> the </B> cradle of multiplication <B> 161 </B> remaining in its forward position. <i> Second </I> number of the multiplier.

      The operation of <B> there </B> machine for the second digit of the multiplier is a repeat of the operation for the first digit, <B> to </B> except for two differences, At the start of operations for this digit of the multiplier, the multiplication cradle <B> 161 </B> occupies <B> already </B> its working position and is therefore not moved when the operator lowers the multiplication key for the second time <B> 160. </B> Moreover, the registered multiplicand is not the same.

   In fact, following the intervention of the backspacing mechanism, the number entered was reduced by an equal factor. <B> to 10. </B> The other operations are identical <B> to </B> those described for the first multiplier digit., <I> Last digit </I> of the # nuJtip1icator. The cycle of operations for the last multiplier digit is a repetition of the operations for the other digits, except that, for this last cycle, the oscillating frame <B> 32 </B> is completely recalled <B> to </B> the starting position, thus erasing the inscribed multiplicand, while the cradle <B> 161 </B> itself occupies the rest position.



  It should be remembered that the multiplicand digit has been entered followed by a number of zeros. These zeros, in equal number <B> to </B> that of the multiplier digits minus one, have been eliminated during previous multiplication cycles. Consequently, when the last multiplier digit is to be entered, the units digit of the multiplicand occupies the lowest column and, for the first time, the bar <B> to </B> characters <B> 35 </B> de, the column of units may rise above the position <B> 0. </B> This movement is used to control the return of the multiplication cradle <B> 161. </B>



  With regard to fig. <B> 11, he </B> is suitable <B> of </B> recall that, during <B> the </B> movement of the cursor-multiplier starting from the position <B> 0, </B> levers 148 and <B> 151 </B> are released to rotate in the opposite direction <B> to </B> that of the needles of a watch around their pivot 149, <B> of </B> so that the cursor <B> 157 </B> is moved to the front of the machine. This slider <B> 157 </B> present <B> to </B> its rear end a slide engaged on the shaft 246.

   In its forward position, a click <B> 300, </B> hinged to the cursor <B> 157, </B> rests on a heel <B> 301 </B> a lever â02 integral with the shaft <B> 30Ô. </B> This tree <B> 303 </B> is recalled in <B> the </B> opposite direction <B> to </B> that of the needles of a watch by it spring 304 (fig. 12), and it is retained in its normal position (fig, <B> 11) </B> by the cooperation of a le vier <B> 305 </B> of the tree with a finger <B> 306 </B> fixed on the bar <B> to </B> characters <B> 35 </B> of the lowest column.

   Lever 305 is part of the caliper <B> 307 </B> freely mounted on the shaft <B> 303. </B> It is connected by a spring <B> 308 to </B> a brooch <B> 309 </B> supportive of the tree <B> 303. </B> The spring <B> 308 </B> is stronger than spring 304, and therefore tends to <B> to </B> solicit the tree <B> 303 </B> in a clockwise direction. <B> A </B> Farbre's right end <B> 303 </B> a lever is attached <B> 310 </B> re linked by a connecting rod <B> 311 to </B> a lever <B> 312. </B> The lever 312 is articulated by its front end to the lock <B> 166 </B> of the multiplication cradle <B> 161. </B> When moved to the rear,

   he frees the cradle <B> 161 </B> to allow his return <B> to </B> the starting position.



  The posterior end of the lever <B> 312 </B> has a heel <B> 313 </B> normally released from a square finger 314 secured to a lever <B> 315, </B> but can be engaged on the trajectory of this finger. If the cursor-multiplier <B> 110 </B> occupies a position next to Lin any number, the spring <B> 153 </B> rotate the lever <B> 151. </B> to advance the cursor <B> 157 </B> and to place the ratchet <B> 300 </B> above the heel <B> 301 </B> the lever <B> 302. </B> When the bar <B> to </B> characters <B> Ô5 </B> units rises above the position <B> 0, </B> while entering the last multiplier digit,

   the lever <B> 309- </B> is stopped in an intermediate position by the pawl <B> 300. </B> If the cursor <B> 110 </B> is brought back <B> to </B> the position <B> 0, </B> finger 147 of the cursor <B> 110 </B> cooperates with lever 148 to rotate it clockwise.

   -But the lever <B> 151 </B> cannot follow this movement because the tier <B> 155 </B> (fig. 12) of the lever <B> 156 </B> is <B> to </B> this moment engaged on the finger 154 of the lever <B> 151. </B> If the cursor <B> 110 </B> move from position <B> 0 </B> to the subnormal position during the anterior part of the last cycle, <B> he </B> lift the lever <B> 156 </B> to release the lever <B> 151, </B> which then votes in the direction of the wings of a watch to move the cursor <B> 157 </B> to Par-rière and to remove the ratchet <B> 300 </B> above the heel <B> 301. </B> Now

   given that the bar <B> to </B> characters <B> 35 </B> of the -units column rises <B> î </B> above <B> 0, </B> the lever <B> 302 </B> is free to move beyond its intermediate position. <B> He </B> thus lowers the lever <B> 312 </B> to bring it on the trajectory of the finger, square 314 and to release the cradle <B> 161. </B>



  Lever Ô15 swivels forward <B> to </B> the end of the first half-cycle and back to the start of the return cycle, under the action of the bar 48 cooperating with the upper cam-shaped end of the lever <B> 315. </B> This bar 48 (fi - o-. 14) is connected to the decks 241 and 124 by sliders <B> 316 </B> connected by their e - .. upper trinities to plates 241 and 124 and being able to slide on fixed fingers <B> 317 </B> (fig. <B> 3). </B> If the plates 241 and 1'224 rotate during the cycle,

   bar 48 is lowered and rotates the lever <B> 315 </B> forward <B> to </B> against the action of the spring <B> 318 </B> which acts on the lever <B> 315 </B> via a connecting rod ") 19, connected to the lever <B> 315 </B> by one end and the opposite end of which can slide on a fixed finger <B> 320. </B> When the lever <B> 312 </B> is <B> c </B> lowered in the manner previously described, the return movement of the lever <B> 315 </B> raises lever 312 to release the cradle <B> 161 </B> cl-Li lock <B> 166 </B> shortly after half of the cycle.



  When the cradle <B> 161 </B> is released and re-conducted <B> to </B> the rest position by its spring 161a, it engages the return mechanism of the oscillating frame <B> 32 </B> by releasing lever 202 (ffig. <B> 9). </B> This allows the spring <B> 321 </B> lever 202 to lift roller 204 from lever <B> of </B> recall 194, and this lever cooperates at the appropriate time with the heel <B> 195 </B> cursor <B> 193 </B> to bring back the oscillating frame <B> 32 to </B> the position <B> of </B> rest.

   The retro-spacing mechanism, which intervened ilisque there to remind the oscillating frame <B> 32 </B> with a step, is again disengaged by the arrival of the upper hooked end 212 of the cradle <B> 161 </B> (fig. <B> 11) </B> on the finger <B> 213, </B> to prevent the lifting of the lever <B> 223 </B> to the position in which he can cooperate with his finger <B> 230. </B>



   <B> A </B> the end of this movement, all the or- nq ,, donkeys are brought back <B> to </B> the starting position and the full product of the multiplier and the multiplicand is recorded in the totalizer <B> 61. </B> This product can then be printed by a take total operation, or retained for use in other calculations.



   <I> Operations of, division. </I>



  The present machine is capable of performing the fully automatic division by a repeated subtraction process. In this process, the divisor is repeatedly subtracted from the dividend until a complement is obtained. The divisor is then back-added once and reduced by an equal factor <B> to 10. </B> This operation is repeated until <B> this </B> that the control mechanisms intervene to stop operations.



   <I> Registration </I> says dividend. (Fig. <B> 1, </B> 2, <B> 3 </B> and <B> 9.) </B> The dividend is written on the pins <B> 33 </B> (fig, <B> 3) </B> by the usual operation of the keys <B> 30. </B> It is generally appropriate to enter the dividend in the upper columns by following the last digit of a number of zeros to move the dividend to the higher columns.

   We then operate the addition bar <B> 98 </B> (fig. <B> 1) </B> to transfer the dividend to the totalizer <B> 61 </B> de, the usual way. In this recording cycle, the return lever 194 (fig. <B> 9) </B> intervenes to bring back the oscillating frame <B> 32 </B> and to delete <B> the </B> number entered after registration. All the organs are therefore brought back <B> to </B> the starting position. Inscription of the divider. The divider is then inscribed on the pins <B> 33 </B> by the maneuvering of the keys <B> 30, </B> and it is moved in the way previously <B> de- </B> write to the columns the elevated pl-Lis.



  Button operation <I> division. </I> (Fig. 4, 14, 20 <B> to </B> 24, <B> 27 </B> and <B> 28.) </B> After registration of the dividend on <B> the </B> totalizer <B> 61 </B> and the entry of the divisel - tr, the operator lowers the division key <B> 325 </B> to prime <B> the </B> division cycle.

   In fig. 14 and <B> 28, </B> we see that the key <B> 325 </B> is linked by an angled lever <B> 326 </B> and -a connecting rod <B> 327 </B> <B> to </B> a cradle of division <B> 328 </B> placed <B> to </B> the outside of the multiplication cradle <B> 161. </B> The finger <B> 165 </B> of the multiplication cradle <B> 161 </B> is engaged in the rest position on the anterior edge of the dividing cradle <B> 328. </B> Accordingly, when the cradle of division <B> 328 </B> is advanced, it also drives the multiplication cradle <B> 161. </B> The lock <B> 166 </B> previously described retains the cradle of di vision <B> 328 to </B> the adjustment position by the operation of the lock <B> 166 </B> with one finger <B> 329 </B> of the cradle <B> 328. </B>



  The setting of the multiplication cradle <B> 161 </B> using the division key <B> 325 </B> conditions the same mechanisms that are conditioned when <B> the </B> cradle <B> 161 </B> is set by the multiplication key <B> 160, </B> that is to say that the <B> m- </B> swing frame return canism <B> 32 </B> is disengaged by lever 202, while the cloig <B> 213 </B> (fig. 14) is released to allow automatic operation of the backspace key <B> 209. </B> The connecting rod <B> 233 </B> is moved forward to release the lock 234 of the lever <B> 235 </B> ordering printing,

   and to move away from the trajectory of the finger <B> 256 </B> of the plate 241 the lever 254 releasing the counter bar.



  The establishment of the cradle of division <B> â28 </B> conditions other control organs cooperating with those which are actuated by the multiplication cradle. The cradle of vision <B> 328 </B> is connected <B> to </B> a connecting rod <B> 330 </B> which, when it is advanced, touches a finger 3ôl of a lever <B> 332 </B> united with a tree <B> 3ô3 </B> to maintain the lever <B> 332 </B> in a lower position.

   The purpose of this movement will be described later with the operation of the backspacing mechanism. The posterior end of the connecting rod <B> 330 </B> is connected <B> to </B> Lurie branch of Lin caliper 334 forming part of Lin shift mechanism as shown more clearly in figs. 21 and 22.

   Caliper 334 is articulated on a fixed pivot <B> 3ô5. </B> Its postero-inferior branch is connected <B> to </B> a cursor <B> 336 </B> freely movable on fingers <B> 337 </B> integral with the frame. <B> A </B> this slider <B> 336 </B> a lever is articulated <B> 338 </B> having two angularly raised ends <B> 239 </B> and 341. The lever <B> 338 </B> has a smooth neck 342 erigac e on the finger i43 of a heart i44. The cursor Ô44 is mounted on the totalizer support <B> 61 </B> and has two heels <B> 3-15 </B> engaged under the racks <B> 55 </B> and <B> 56 </B> in the lower column.

   A lever <B> to </B> eliquet 346 articulated to the support of the totalizer is requested by a spring 349 to apply its finger <B> 352 </B> against the top edge of cursor Ô44. In cooperation with the heel 345 of the slider 344, the pawl retains this slider in any adjustment position.

   Nor malement, the cursor <B> 336 </B> occupies the position shown in fi-. 21, in which the end <B> 339 </B> cooperates <B> to </B> each cycle of the machine, by bar 48 operated periodically, to push the end <B> 339 </B> and the slider 344 backwards, and to move the heels 345 away from the racks <B> 55 </B> and <B> 56. </B> The postero-superior branch of Pétrier 334 is connected by a rod 347 <B> to </B> a branch of a bracket 348 articulated to the frame of the machine.

   The other branch of Pétrier 348 is perposed <B> to </B> the rear end of the lever <B> 116 </B> previously described. When Pétrier â34 pivots under the action of the division cradle, D28, <B> 3 </B> the caliper 348 intervenes to lower the rear end of the lever <B> 116.

   he </B> rec #, ient to recall that this movement allows <B> to </B> the command bar (the printing <B> 118 </B> key move to the extreme position <B> to </B> left and disengage the driving mechanisms of the striking cylinder and, of impression.



  The ant6ro-superior branch of caliper 334 is notched to overlap the edge of the lever <B> 350 </B> sliding - and swiveling on the swivel <B> 317. </B> The lever <B> 350 </B> has a lower branch (fig. <B> 27) </B> elbow to arrive <B> to </B> proximity to a postero-inferior branch of the lever <B> to </B> spring <B> 2137 </B> previously described.

    When the lever <B> 350 </B> is pushed to the -le- left by the caliper 334 actuated by the division button <B> 325, </B> the lever branch <B> 350 </B> is <B> de- </B> placed opposite the post6ro-iiif.- higher branch of the lever <B> 237, </B> so that the lever Ô50 can be operated by the lever <B> 237 to </B> each cycle of the machine. The front end of the lever <B> 350 </B> (fig. 20) is placed under a spit <B> 351 </B> of the subtraction box 104.

    When the lever <B> 350 </B> is operated by the lever <B> 237, </B> the first one raises the frame 104. It must be remembered that the elevation of the frame 104 causes the next cycle of the machine to become a subtraction cycle. It is therefore obvious that], 'intervention of the lever <B> 350 </B> translates to an in, ç) * subtractive rule of the totalizer <B> 61 </B> with the racks <B> 56. </B> The installation of the division cradle __ # 2S and, the connecting rod, <B> 330 </B> also moves a lever <B> 355 </B> (fig. 14, <B> 23 </B> and 24) starting from the position of fig. <B> 23, </B> in which it is placed under a finger <B> 0356 </B> a lever <B> 357, </B> to I;

  i position of fig. 24, in which the finger <B> 356 </B> is released from the lever <B> '055. </B> A spring <B> 358 </B> <B> M </B> hanging on the lever <B> '057 </B> recalls this one in the opposite direction <B> to </B> that of the di-ine nionter needles, (fi, -. <B> 2ô </B> and 24).

   But it is normally maintained <B> to </B> the position of fig. <B> 23, </B> even when released from the lever <B> 355, </B> by a locking lever <B> 359 </B> cooperating with a heel <B> 366 to </B> the front end of the lever <B> 357. </B> One finger <B> 367 to </B> the front end of the lever <B> 357 </B> is placed below the bottom edge of the backspacing slider <B> 223. </B> When the lever <B> 357 </B> is free to move to the position of fig. 24,

   finger <B> 367 </B> raise the posterior end of the slider <B> 2223 </B> to a position in which it cooperates with the finger <B> 230 </B> of plate 2ôl and thus activates the retro-espaeement key <B> 209. </B>



  The lower end of the di vision key <B> 325 </B> (fig. 4 and <B> 28) </B> is placed above an elbow of the control rod of the cycles <B> 181. </B> When the key <B> 325 </B> is lowered, it turns the rod to initiate a c # ele of the machine. This key <B> 325 </B> is kept lowered by the lock <B> 166, </B> since there is no play in the connection between the key <B> 325 </B> and the cradle <B> 328. </B> As a result, the rod <B> 181 </B> is kept in the working position, and the machine continues to run as long as the button <B> 325 </B> is not released.

           Preinier <I> division cycle. </I> (Fig. 14, 21, <B> 23 </B> and 24.) The organs having been put in place by the operation of the division key <B> 325 </B> As previously described, the main tree starts up for cycles. Since plate 241 (fig. <B> 23 </B> and 24) swivels in the opposite direction <B> to </B> that of the hands of a watch, the roller 240 of this plate 241 releases the lever <B> 237 </B> that the spring <B> 238 </B> rotates in the opposite direction <B> to </B> the clockwise one.

   The lever <B> 350, </B> then moved to bring its lower tab opposite the postero-inferior branch of the lever <B> 237, </B> swivels <B> to </B> its turn and its anterior end raises the subtraction frame 104 (fig. 20). This determines the cycle subtracting the registered divider from the dividend carried over to the totalizer.



  At the same time, pivoting the lever activates the angled lever <B> 235 </B> (fi-. <B> 19) </B> which was released by the lock 234 during the placement of the multiplication cradle <B> 161, </B> so that the bar <B> 118 </B> is pushed to the extreme position <B> to </B> left. The lever <B> 116 </B> has been lowered and moved out of the way of the bar <B> 118 </B> by rod 347 when ordering the division cradle <B> 328. </B> The bar <B> 118 de- </B> therefore brakes the drive mechanisms of the <B> c- </B> 'printing of the typing and d # niere previously described.



  The counter bar 242 is raised one step towards the position <B> 0 </B> by cursor <B> 276 </B> lever action <B> 250, </B> the cursor being released by the movement of the elbow lever <B> 235. AT </B> at the end of the cycle, the lever 254 is raised by the multiplication cradle <B> 161, </B> so that the vier <B> 250 </B> is brought back <B> to </B> the middle intermediate position to hold the pawl 243 <B> to, </B> the working position. The counting bar 242 is therefore <B> to </B> his turn maintained <B> to </B> the elevated position as detailed in the description of the multiplication operation.



  A little before the position in the middle of the <B> cy- </B> key, the bar 48 cooperates with the end 341 of the lever <B> 338, </B> then brought by the caliper 334 <B> to </B> the position shown in dotted lines in fig. 21, and polish this end backwards by advancing the cursor 344 (fig. 22).

   In this advanced position, the cursor Ô44 presents its heels 345 under the racks <B> 55 </B> and <B> 56 </B> of the colon-ne, the lowest, and placed from, dewlap <B> to </B> prevent any transfer movement of these racks below their position <B> 0, </B> which effectively prevents the recording of a fugitive unit on <B> the </B> totalizer <B> 61. </B> This non-recording of a fugitive unit in division operations is necessary to avoid the error inherent in the occupant algebraic totalizer <B> to </B> both a positive and negative totalizing position when used for division operations.



  During the <B> c <U> 1. </U> 0 </B> yele, plate 241 (fi 2 'and 24) oscillates the lever <B> 103 </B> said ribbon by means of a connecting rod <B> 360. </B> A little before the middle of the cycle, a journal <B> 361 </B> connecting the connecting rod <B> 360 </B> at the lever <B> 103 </B> cooperates with a heel <B> 362 </B> of the locking lever Ô59 to rotate it clockwise <B> to </B> against the action of a jurisdiction <B> 363 </B> to unlock the lever <B> 357. </B> But this release called lever Ô57 does not allow it to pivot <B> to </B> this moment,

   since one end 364 of the lever <B> 350 </B> is engaged on a finger <B> 365 to </B> the posterior end of the lever <B> 357. </B> The cursor <B> 223 </B> is therefore not high <B> to </B> the working position facing the roller <B> 230. </B> The lock Ô59 is released by the lever <B> 103 </B> to return to the locked position relative to the lever <B> 357 </B> during the second half of the cycle.



   <I> Following division cycles, </I> The cycle <B> of </B> -division following is a repetition of the one just described, except that the lever <B> 338, </B> before been activated during the previous c # 7cle, is pl-Lis activated. Since the counting bar 242 does not advance <B> to </B> not, <B> the </B> lever <B> 250 </B> only returns to the middle position. The dividing lines follow each other until, during one of these cycles, the divisor becomes greater than the number remaining in the totalizer and until the remainder of the totalizer is a negative quantity. <B> to </B> the end of this cycle.

       <I> Cycle </I> overtimeiii. (Fig. 20, <B> 23 </B> and 24.) This cycle is a repetition of the first <B> cy- </B> key and subsequent cycles. However, since the totalizer <B> 61 </B> goes beyond the rest and works negatively, a control member is moved to change the <B> cy- </B> next key in an addition cycle. In the positive statement shown in fig. 20,

   the carry forward mechanism for the highest column of the register <B> 61 </B> and for the racks <B> 55 </B> and <B> 56 </B> determine the offset of the overrun cursor <B> â68 </B> to either position. When the lock <B> 63 </B> racks <B> 56 </B> is withdrawn, the upper end of its branch <B> 369 </B> move back and polish the cursor <B> 368 </B> to the rear. When the lock <B> 6ô </B> of the posterior racks is removed, the Ô69 branch of this lock pushes the slider <B> â68 </B> forward.

   A turntable <B> 371 </B> articulated and angled (see also fic. <B> 3) </B> cooperates with the notched posterior end of the slider <B> 368 </B> to be moved by it. This mechanism is part of the negative totalization control of the known machine and indicates when the cursor <B> 368 </B> is advanced and. when the plate Ô71 has rotated, in the opposite direction <B> to, </B> the clockwise one (fig. <B> Ô) </B> than the total absorbed by the totalizer <B> 61 </B> is positive and when the cursor Ô68 is moved back and. than the turntable <B> 371 </B> has rotated clockwise, that the total of the totalizer is negative.



  As long as the remainder retained by the totalizer <B> 61 </B> is positive <B> to </B> the end of a cycle, the cursor <B> 368 </B> is advanced and, the turntable <B> 371 </B> maintains a lever <B> 372 </B> (fig. 20, <B> 23 </B> and 9-4) in an elevated position. In this elevated position, a finger <B> 373 </B> the lever <B> 350 </B> goes into -a check mark on the lever <B> 372. </B> The length of this finger Ô73 is such that it fits into the plane of the lever Ô72 when <B> the </B> lever <B> '350 </B> is pushed to the left of the machine during division operations.

   In other conditions, it is released from the lever <B> 372. </B> If the totalizer goes beyond the rest, the finger <B> 373 </B> engages in the notch 374, but the usual spring of the lever <B> â69 </B> maintains the pressure exerted on the plate <B> 371 </B> and the lever <B> 372 </B> to lower it to a lower position as soon as the lever <B> 350 </B> is brought back <B> to </B> his position as <B> de- </B> leaves.



   <B> A </B> at the end of this cycle, the bar comptt-Lise <B> 2 </B> M2 was bred for the placement of a character <B> 37 </B> less than one unit than the number <I> Cie </I> eveles. --But since this number is one greater than the correct number of cycles, the counting bar is placed on the correct number of the quotient.

       <I> Corrective cycle of </I> exceeded. (Fig. <B> 19, 23, </B> 24 and <B> 27.) </B> The totalizer <B> 61 </B> having gone from a positive remainder to a negative remainder, it is necessary to bring in a corrective cycle to bring the remainder to the last positive value. In this cycle, which immediately follows the <B> cy- </B> <B> key </B> (the overshoot, the divisor is added and not subtracted from the totalizer <B> 61. </B> The divisor and the present digit of the quotient are printed, and the backspace key denies <B> 209 </B> is operated to reduce the inscribed divider by an equal factor <B> to 10. </B>



   <B> To </B> start of this overshoot cycle <B> ' </B> the lever <B> 372 </B> (fig. <B> 223 </B> and 24) has been lowered to place the upper branch <B> 375 </B> on the finger tra jectory <B> '07 Ô </B> the lever <B> 350. </B> During this e # 7e1e, the lever <B> 350 </B> therefore cannot be moved by the lever 227 when the latter is released by the roller 240 of the plate 241. <B> 237 </B> is therefore blocked in its position <B> of </B> departure. The lever <B> 350 </B> not being able to pivot, it does not cooperate with the finger <B> 351 </B> of the frame of. subtraction 104 to raise this one.

    The totalizer <B> 61 </B> therefore meshes during this cycle with the addition racks la-la to positively register the divider. This horn <U> rige </U> the totalizer overrun state <B> 61 </B> and bring the rest <B> to </B> the last positive value.



  During this cycle, the lever <B> 237 </B> being # also retained in its starting position, cannot lift the connecting rod <B> 239 </B> (fig. <B> 19), </B> so that the cursor <B> 119 </B> and the bar <B> 118 </B> are not moved to the left. The paper pressure and feed mechanisms then come into play in this cycle to print the divider and the quotient number presented by the counter bar.



  Moreover, since the lever <B> 235 </B> is not moved by the lever <B> 237, </B> the cursor <B> 276 </B> cannot move forward to move counter bar 242 to a higher number. This counter bar 242 having the correct number of the quotient during the previous cycle, it is not necessary to advance it during the last cycle.

      Locking the lever <B> 350 </B> also engages the components actuating the back-spacing key. he <B> y </B> should be remembered that, during the previous cycles, the lever <B> 350 </B> intervened to retain the lever <B> 357 </B> (fig. <B> 23 </B> and 24) <B> to </B> its clockwise position while the latch is <B> 359 </B> was released from the heel <B> 366 </B> the lever <B> 357. </B> In the correction cycle, on the other hand, the lever <B> 350 </B> is not moved.

   When the red worm <B> 359 </B> is released by the lever <B> 103, </B> the lever <B> '357 </B> can therefore rotate freely in the opposite direction <B> to </B> the one clockwise to the position of fig. 24, and he lifts the posterior end of the slider <B> 223 </B> to a position in which it cooperates with the finger <B> 230 </B> of the turntable <B> 231. AT </B> the end of this cycle, <B> k </B> cursor <B> 223 </B> is then pushed back to press the button <B> 209 </B> in the manner previously described, and to bring the oscillating frame back by one step <B> 32. </B> This reduces the entered divider by an equal factor <B> to 10 </B> and prepare it for the following operations.

   The cursor retreat <B> 9-23 </B> also frees the counter bar 242 which then returns <B> to </B> the lowest position in the manner described for multiplication operations.



  During the last half of this correction cycle, the totalizer <B> 61 </B> returns this time to a positive value. <B> A </B> Unless it is prevented, this positive overshoot lifts the branch <B> 375 </B> the lever <B> 372 </B> above the finger <B> 373 </B> the lever <B> 350. </B> If we allowed this movement, the lever <B> 350 </B> could bring back the lever <B> 357 to </B> the inactive position and prevent cursor operation <B> 223. </B> To hand hold the lever <B> 372 to </B> the blocking position n with the -finger <B> 373, </B> a lock is provided on the lever <B> 350 </B> to maintain the lever <B> 372 </B> lowered until the end of the current cycle.

   This lock (fig. 24 and <B> 27) </B> is made up of a small plate <B> 376 </B> articulated <B> to </B> the lower branch of the lever <B> 350. </B> A spring <B> 377 </B> requests the plate to apply a lower tab against the finger <B> 373. </B> The brochure <B> 376 </B> has a lateral heel <B> 378. </B> During cycles in which the lever <B> 372 </B> is raised, this heel <B> 378 </B> comes up against the branch <B> 375 </B> the lever <B> 372, </B> and the brochure <B> 376 </B> sorrel around its pivot.

   When the lever <B> 372 </B> is lowered to butt against the finger <B> 373, </B> the slight movement of the lever <B> 350 </B> necessary to catch up the game raises the heel <B> 378 </B> above the branch <B> 375 </B> and thus maintains the lever <B> 372 </B> in the lower position until the end of the cycle, when the lever <B> 237 </B> is completely brought back <B> to </B> the starting position.



   <I> Second digit of the quotient. </I>



  The second and subsequent digits of the quotient are determined in the same way as the first digit, although the divisors are reduced by an equal factor. <B> to 10 </B> for each consecutive digit of the quotient.



   <I> Automatic shutdown </I> of <I> the division. </I> (Fig. <B> 11, </B> 14 and <B> 28 to 31.) </B> The division is stopped by the same dewlap as the multiplication, that is to say by the <B> de- </B> cradle clearance <B> 161 </B> and <B> 328 </B> of the lock <B> 166 </B> (fig. <B> 11 </B> and 28). We must remember that for multiplication, the lock <B> 166 </B> is removed to allow the return of the cradle <B> 161 </B> when the bar <B> to </B> characters in the lower column rise below the position <B> 0 </B> and when the cursor <B> 157 </B> steps back.

   In a division, the cursor <B> 157 </B> is not advanced to the blocked position, since this advancement is effected by an adjustment of the slider-multiplier <B> 110. </B> Accordingly, when the bar <B> to </B> characters <B> 35 </B> of the units column rises above <B> 0 </B> in a division, the tree <B> 303 </B> can swing freely and lower the connecting rod in the path of the lever finger 314 <B> 315. </B> However, the bar <B> to </B> characters <B> 35 </B> of the lower column rises above <B> 0 </B> in -each cycle during the caleul of the lower number of the quotient. Removal of the worm <B> 166 </B> must therefore be deferred until the quotient figure has been determined.

   This quotient number is determined and printed during a feedback correction cycle, and the lock <B> 166 </B> should be removed during this addition cycle. <B> A </B> this effect is provided with a lock to prevent the operation of the lever Ô15 (fig. <B> 11, </B> 14 and <B> 29 to 31) </B> until the machine completes an addition cycle. This lock consists of a lever <B> to </B> cro chet <B> 380 </B> articulated <B> to </B> the sliding rod <B> 319 </B> and recalled by a spring <B> 381 </B> to engage the hook on the finger <B> 320 </B> when, the lever <B> 315 </B> is pushed to the forward position.

   When the lever <B> 380 </B> is hanging on the finger <B> 320, </B> le le vier <B> 315 </B> cannot return <B> to </B> the starting position after being released by the, bar 48, and it cannot actuate the connecting rod <B> 312 </B> via the finger 314. As shown in fig. <B> 11 </B> and <B> 29 to 31, </B> the lever <B> to </B> cro chet <B> 380 </B> is controlled by a finger <B> 382 </B> a turntable <B> 383 </B> integral with a journal <B> 77. </B> This 3803 plate is part of the process of moving the totalizer <B> 61 </B> between the addition racks <B> 55,

   </B> the middle position of <B> de- </B> clutch and subtraction racks <B> 56. </B> When plate Ô83 occupies the position <B> of </B> subtraction (fig. <B> 31) to </B> which she was born into in the division cycles soon after the middle of the cycle, the finger <B> 382 </B> is released from the lever <B> to </B> hook <B> 380 </B> who s # enga, -e on the finger <B> 320, </B> preventing the return movement of the lever <B> 315.

   AT </B> this moment, the bar <B> to </B> characters from lower column has been raised above <B> 0, </B> and the connecting rod <B> 312 </B> is lowered to place its end <B> 313 to </B> the back of the finger 314 of the lever <B> 315. </B> The totalizer <B> 61 </B> and the plate <B> 383 </B> remain in the subtraction position until the bars <B> to </B> characters <B> 35 </B> have all returned <B> to </B> the lowest position and raise the connecting rod <B> 31.2 to </B> the upper position. In the next cycle, the totalizer <B> 61 </B> comes back <B> to </B> the middle position (fig. <B> 30) </B> to <B> de- </B> goal of this cycle, and the finger <B> 382 </B> clears the worm- "Or <B> 380 </B> finger <B> 320 </B> to allow the vier <B> 315 </B> to return.

   However, since the bars <B> to </B> characters <B> 35 </B> have not yet been moved, the connecting rod <B> 312 </B> occupies the upper position and is not actuated.



  During the cycle <B> of </B> retro-addition, the totalizer <B> 61 </B> and, the turntable <B> 383 </B> come <B> to </B> the addition position shown in fig. <B> 29, </B> the doiat, <B> 382 </B> now the lever <B> to, </B> hook <B> 380 </B> fingered <B> 320. </B>



  The lever <B> 315 </B> is then free to return, given that the bar 48 is raised, and as the connecting rod M is at the same time lowered, the latter cooperates with the finger 314 to be pushed backwards and release the lock <B> 166 </B> cradles. The craddles <B> 161 </B> and <B> 328 </B> are thus released and can return <B> to </B> the starting position, also recalling the key division <B> 325 </B> and, allowing <B> to </B> the coupling rod <B> 181 </B> to return <B> to </B> the stop position <B> says </B> cycle.

   The return of the multiplication cradle during this cycle engages the mechanism <B> of </B> reminder of the oscillating frame <B> 32 </B> and disengages the key backspacing mechanism <B> 209, </B> so that the previously entered divisor -is deleted. All the organs are then brought back <B> to </B> the rest position. <I> Stop mechanism in case of error </I> (Fig. <B> 11, 16 to 19 </B> and 21.) In a division problem, it may happen that the divisor bind is not registered on the pins <B> 33 </B> or be inscribed, but not properly. aligned with the highest dividend column.

   Under these conditions, no overshooting of the totalizer occurs. <B> 61 </B> during the first ten eyelids. The quotient figure remains <B> to 9 </B> or the machine continues to run indefinitely. To prevent <B> this </B> operation <B> de- </B> fective or continuous, a mechanism is provided to stop it when the counter bar 242 rises above <B> 9 </B> and to print ER which then constitutes the error signal. During the first ten division cycles (fig. <B> 16 to 19), </B> the counting bar 242 does not advance <B> to </B> not to present the character <B> 9 </B> printing hammers.

   During the eleventh division cycle, the counter bar 242 rises beyond the position <B> 9 </B> to present the character ER at the point of printing. A lever <B> 386 </B> (fig. <B> 19), </B> held by a spring <B> 387 </B> in contact with a finger <B> 388 </B> of the counter bar 242, follows the movement thereof until, during the passage of the counter bar 242 of <B> 9 to </B> ER, its upper branch hits a heel <B> \ 89 </B> cursor <B> 119 </B> controlling the print, which occupies <B> to </B> this moment his extreme position <B> to </B> left;

   when the cursor <B> 119 </B> returns <B> to </B> his position <B> to </B> right <B> to </B> the end of the cycle, the end <B> of </B> the upper branch of the lever <B> 386 </B> moves in the plane of the heel <B> 389 </B> of the cur sor <B> 119. </B>



  * A-Li start of the next cycle, which is the twelfth, the roller 240 of the plate 241 releases the lever <B> 237, </B> but this lift cannot fully rise during this cycle, because it is blocked. <B> the </B> lever <B> 386 </B> through the cursor <B> 119, </B> the lever <B> 235 </B> and the connecting rod <B> 239. </B> The subtraction lever <B> 350 </B> (fig. 20) is also blocked by the connecting rod <B> 239, </B> so that it cannot move frame 104 to the subtraction position. This twelfth cycle thus becomes a cycle of addition.

   The levers <B> 235, 237 </B> and <B> 350 </B> can make a slight movement thanks to the small clearance provided for the center of the lever <B> 386 </B> and the heel <B> 389 </B> cursor <B> 119 </B> (fig. 21). This movement of the vier <B> 235 </B> releases the tongue <B> 282 </B> cursor <B> 276, </B> key so that the lever <B> 250 </B> is operated to operate <B> to </B> the pawl in turn lies <B> 283 </B> of the eomptease bar. When the counter bar 242 occupies the ER position.

   , such as the mohtre in fig. <B> 18, </B> its lower end is placed above the feed pawl <B> 283, </B> and it recedes under this end to engage on a shoulder <B> 390 </B> error cursor <B> 391 </B> (fig. <B> He.). </B> This slider slides by its upper end on a fixed finger <B> 392, </B> while its lower end is hinged <B> -to </B> a lever <B> 302 </B> -from the tree <B> 303. </B>



  When the advancement e-ticket <B> 283 </B> of the counting bar is actuated during the twelfth cycle, it passes under the lower end of the bar 242. Since this end is cut in a slope inclined towards the rear, the pawl <B> 283 </B> does not produce any <B> de- </B> placement of bar 242,

   but the error cursor <B> 391 </B> is raised by the cooperation of the ratchet <B> 283 </B> with his shoulder <B> 390. </B> This cursor movement <B> 391 </B> is transmitted <B> to </B> the tree <B> 303 </B> which sorrel in the opposite direction <B> to </B> clockwise and lower lever Ô12 in the way previously <B> de- </B> written.

   It should be noted that, thanks to the spring Ô08 interposed between the shaft <B> 303 </B> and the lever <B> 305, </B> this tree <B> 30â </B> can be driven by the errors cursor <B> 391, </B> even if the bar <B> to </B> 35 characters of the units column has been stopped <B> to </B> the position <B> 0. </B> Likewise, the tree <B> 303 </B> can be driven by the cursor <B> 391 </B> if the cursor <B> 157 </B> has been advanced to place its ratchet <B> 300 </B> on the heel <B> 301 </B> lever â02 integral with the shaft <B> 303, </B> since the ratchet <B> 300 </B> is held elastically in its obstructed position by a spring <B> 392. </B> inserted between this ratchet and the slider <B> 157. </B>



  The pivoting movement of the shaft <B> 303 </B> lowers the heel Ô13 of the connecting rod <B> 312 </B> on the trajectory of the finger 314 of the lever <B> 315 </B> ffig. <B> 11). </B> Since this twelfth cycle is an addition cycle due to the blocking of the lever <B> 350, </B> the lever <B> 315 </B> can return freely when bar 48 rises in the second half of the cycle and actuates the connecting rod <B> 312 </B> to free the multiplication and division cradles <B> 161 </B> and <B> 328. </B> These freed cradles <B> to </B>:

  this moment begins the return of the machine <B> to </B> the idle state, and the operating cycles are completed in the manner previously described in the chapter Automatic stopping of the division.



       Multiplication or <I> prolonged division. </I> (Fig. <B> 1, </B> 2, <B> 11 </B> and 14.) In some multiplication or division operations, it may be desirable to use a larger multiplier or to obtain a higher number of digits; the quo holds that the mechanism described so far n is able to use or calculate before the intervention of the automatic shut-off devices and the presentation of values. A touch of prolongation <B> 395 </B> (fig. <B> 1, </B> 2, <B> 8 </B> and 14.) is planned <B> to </B> this effect to delay the entry into action of the automatic shut-off mechanism up to the extreme possible limit.



  A common feature of the stopping mechanisms for multiplication, di vision and errors is that the tree <B> 303 </B> (fig. 14) turns clockwise to lower the connecting rod <B> 312. </B> Each of the elements making the shaft pivot <B> 303 </B> is recalled by Lin Spring. Spring 304 is provided for multiplication and di-V; , sion and for advancing the presser bar, the spring <B> 277 </B> being provided for errors.

   For this reason, if the tree <B> 303 </B> is positively locked in the rest position, its springs simply refuse to act on this shaft 30Ô and no damage results. Likewise, since the tree <B> 303 </B> does not rotate, the multiplication and division cradles <B> 161 </B> and <B> 328 </B> are not released, the Entry is not erased and, in general, the machine remains in the same state as during normal operation and not as an automatic stopping point.



  The extension key <B> 395 </B> (fig. <B> 8 </B> and 14) is connected by an angled lever <B> 396 </B> and -a connecting rod <B> 397 to </B> a blocking lever <B> 398 </B> for the tree <B> 303. </B> The locking lever <B> 398 </B> is pulled back by Lin spring Ô99 to a higher inactive position and holds the key <B> 395 </B> in the lowered position. The rear end of the locking lever <B> 398 </B> is hook-shaped.

   When lowered by the key <B> Ô95, </B> it engages on a finger 400 of a lever 401 fixed <B> to </B> the right end of the tree <B> 303 </B> (see also fig. <B> 11). </B> This delays the automatic shutdown of the machine under the control of the shaft <B> 3033 </B> until the key <B> 395 </B> and the lever <B> 398 </B> be brought back <B> to </B> the rest position.



  The key <B> 395 </B> and the locking lever <B> 398 </B> are held in the lowered position by a ratchet <B> to </B> notch 402 recalled by a res sort 403 on a finger 404 of an arm 405 solidary of the locking lever <B> 398. </B> The ratchet 402 is <U> cleared </U> finger 404 to allow the spring <B> 399 </B> to recall the key <B> 395 </B> and the blocking lever <B> 398 to </B> the inactive position by -Lin release lever 406 (fig. <B> 8),

   </B> which is actuated to release the eliquet 402 when the oscillating frame â2 is back-spaced from the tens column to the units column by the automatic intervention of the back-spacing key <B> 209 </B> in the manner previously described. Therefore, for extended multiplication or division operations, the <B> 325 </B> is released when the swing frame <B> 32 </B> is brought back <B> to. </B> the lowest column.

   However, since this backspacing takes place <B> to </B> at the end of the cycle, the shaft î) 03 is held in the normal position by the bar <B> to </B> characters <B> 35 </B> of the unit column, and the cradles <B> 161 </B> and Ô28 are not released. <B> A </B> the end of the next cycle, the tree <B> 303 </B> is released from the locking lever 39Lq. Bar <B> to </B> characters from the Liiiities column to rise in this operation, the automatic release of the cradles <B> 161 </B> and <B> 328 </B> a.

   place in the way previously <B> de- </B> written to stop the operation of the machine and to erase the entered values.



  It should be noted that for the multiplication or the. prolonged division, and when the oscillating frame <B> 32 </B> is pulled back, the multiplicand or divisor is reduced by an equal factor <B> to 10. </B> Since there are no columns for fractions or decimals on the pins <B> 33 </B> nor on bars î>, characters <B> 35, </B> the figures of the lowest columns of these factors are successively eliminated. For example, assuming the initial multiplicand or divisor is the number <B> 4678900000, </B> successive numbers resulting from backspacing operations will be <B> 467890000, 46789000, 4678900, 467890, </B> <B> 46789, </B> 4678. 467, 46 and finally 4.

   Like this, the last four factors differ from those that were originally inserted on the brochures. <B> 33, </B> the product or quotient and <B> the </B> The rest may become inaccurate for some problems. However, this inaccuracy is in <B> ge- </B> nal so weak that it can be neglected, and the extended answer will be correct for a larger number of digits than the answer that can be obtained without the extension.



   <I> Extended quota </I> predetermined. (Fig. <B> 11, </B> 12, 14 and <B> 28.) </B> The machine-described is also capable of operating to extend a quotient in a division problem up to a predetermined number of digits greater than the number obtained without the extension, but less <B> to </B> the capacity of the machine. For this operating mode, the cursor-multiplier <B> 110 </B> is placed on a number representing the number of desired digits of the quo holds.

   In the description of the multiplication, it was stated that when the cursor <B> 157 </B> (Tig. 12) is advanced during cursor setting <B> 110, </B> its ratchet <B> 300 </B> engages in the path of the lever <B> 302 </B> of the tree <B> 303 </B> to prevent the machine from automatically shutting down. This operation is used in a division to extend it until the end of the calculation of a predetermined number of digits of the quotient. Before switching on for division, the cursor <B> 110 </B> is placed <B> to </B> help <B> of </B> the controller <B> 109 </B> on the number representing the desired number of digits of the quotient.

   In this position <B> of </B> cursor <B> 110, </B> the eliquet <B> 300 </B> cursor <B> 157 </B> prevents pivoting of the shaft <B> 303 </B> to stop dividing at the usual point, but not if an error has been 'stuck.



  The slider-multiplier is moved back one step towards the <B> 0 </B> when printing each figure in the quotient. The advancement pawl <B> 268 </B> cursor <B> 110 </B> is normally disengaged by branch 174 of the bracket <B> 173, </B> and he is engaged by the division key <B> 325 </B> (fi o ,. <B> 28) </B> when this key is down.

   A finger 407 of this key <B> 39-5 </B> then cooperates with the right branch <B> 172 </B> stirrup <B> 173 </B> and move this branch enough to lower the shoulder <B> 175 </B> of branch 174 below the trajectory of the finger <B> 176, </B> but not enough to allow <B> to </B> branch 174 to be locked down.

   The advancement ratchet <B> 268 </B> is then free to intervene <B> to </B> each cycle of the machine to bring back the slider-multiplier <B> 110 </B> dlin Not towards position 0. However, in this mode of operation, the pawl <B> 268 </B> is locked in its rest position by Lin second lock 408 (fig. 28 ') which is lowered in front of the finger <B> 176 to </B> each division is tractive of the machine.



  Lock 408 is connected <B> to </B> a transversal lever 409 arranged <B> to </B> the front of the machine and having a descending branch 410 placed in front of a tongue 411 of a slider 412. This slider -112 is connected (fig. 14) <B> to </B> the lower branch of the lever <B> 350, </B> and it is advanced each time the lever <B> 350 </B> rotates to move the frame 104 in the direction of the totalizer meshing <B> 61 </B> for subtraction.

   This movement of cursor 412 rotates lever 409, which causes <B> to </B> turn lever 408 (fig. <B> 28) </B> towards the blocking position in relation to the finger <B> 176 </B> said cursor control mechanism <B> 110. </B> When the lever <B> 350 </B> is prevented from rotating during a correction cycle <B> to </B> retro-addition, in which the quotient number is printed in the manner previously described, the lever 408 is not moved and the driving pawl <B> 268 </B> is free to bring the cursor back one step <B> 110. </B>



  This movement of the cursor <B> 110 </B> Li-li during the first half of the feedback cycle. Accordingly, when the cursor is brought <B> to </B> the position <B> 0 </B> in the reverse addition cycle for the last desired digit of the quotient, it moves the cursor back <B> 157 </B> (fig. 12)

   to free the tree <B> '003 </B> and to allow the automatic stop of the division and the erasure of the divisear in the last half of this feedback cycle. The lever <B> 156 </B> does not intervene to prevent cursor recoil <B> 157 </B> when, the cursor <B> 110 </B> move back to position <B> 0 </B> as in the case of a multiplication, being. since the lever 1.56 is only released in its locked position by the multiplication key <B> 160 </B> and not by the division key <B> Ô25. </B>



  In summary, the setting up called cursor-multiplier <B> 110 </B> in an advanced position therefore disengages the automatic stopping devices of the machine until the slider <B> 110 </B> be back <B> to 0 </B> with a step <B> to </B> both for each quotient digit.



   <I> Automatic take </I> from iut <I> total. </I> (Fig. <B> 1, </B> 2, <B> 6 </B> and <B> 7.) </B> If desired, the described machine small hearth conditioned for the taking of a total <B> to </B> the end of a multiplication or a division, with a view to printing the product or the remainder and the discount <B> to </B> zero of the totalizer <B> 61. </B> This mechanism is controlled by a total lever 415 (fig. <B> 1, </B> 2 and <B> 7) </B> which can pivot to two positions on a journal 419 and which is held in each position by a ratchet 416 applied to a finger 417 of the total lever 415 by a spring 418.

   In its posterior position, in the direction of clockwise, the lever 415 cooperates by its branch -120 with the finger 421 of a connecting rod 422 (see also fig. <B> 6) </B> to push it slightly towards the front of the machine.

   In this position of the connecting rod 422, an articulated plate 423 <B> to, </B> this rod in 424, and biased by a spring 425 in the opposite direction <B> to </B> the one clockwise, do not move in this direction to engage its step 426 under a finger 4.27 called the multiplication cradle <B> 161 </B> when it is placed in the working position. When lever 415 is <B> de- </B> placed towards the. anterior position and grace <B> to </B> the inclination of the spring 438 hooked <B> to </B> the connecting rod 422, it moves back slightly.

   When the finger 427 is raised by the placement of the cradle <B> 161, </B> the 4233 plate can move in the opposite direction <B> to </B> that of clockwise to bring step 426 under Zn finger 427.



  The lever 415 being brought <B> to </B> the previous position and the. --- stingy 426 being placed under the finger 427 by the installation of the cradle <B> 161, </B> The organs remain in this position until a.-Li last cycle of multiplication or division. During this last cycle, the cradle <B> 161 </B> is released to be brought back <B> to </B> the starting position by its spring <B> 161 (t. </B> During this return, the finger 427 pulls the plate, 4213 and the connecting rod 422 downward to place the rear hooked end of this connecting rod on the path of a finger 428 of the plate 234 integral with the main shaft <B> 96. </B> Towards the end of this cycle, which is the last calculation cycle ,.

    as was indicated previously ,, the finger, t 428 cooperates with the connecting rod 422 and pushes it towards the rear. The connecting rod 422 is articulated by its anterior end <B> to </B> a lever 4219 articulated on a journal 430.

   The other branch. lever 429 is connected by a powerful spring 431 <B> to </B> a branch of a stirrup 432, one of which, another branch is superimposed <B> to </B> one finger 433 of the no-addition key <B> 99. </B> A tic recoil movement of the connecting rod 422, driven by Parbre. main <B> 96 </B> in the way <B> who </B> just described, intervenes to lower the non-addition threshold <B> 99. </B> If no number is written on the pins <B> 33, </B> this lowering of the key <B> 99 </B> initiates a total taking operation in deLix continuous cycles.

   Plate 423 is released from the finger <B> -127 </B> in the first <B> of </B> these cycles by a spout 434 of the plate 234 abutting on a heel 435 of the plate 423, to rotate the latter sufficiently to remove the step 426 from the finger 427 and to allow at res fate 438 to recall the connecting rod 422 <B> to </B> its upper position.



  The cradle of multiplication <B> 161 </B> is always set up for a multi-fold or split operation, and it is returned to the starting point in the last cycle of that operation. When the lever 41.5 occupies its forward position, this return of the cradle <B> 161 </B> lowers the connecting rod 422 and allows the automatic take-up of a total after the last cycle of the calculation operation. Under these conditions, the machine is automatically reset <B> to </B> zero, if all the calculation factors are printed, all the components being in position <B> C </B> (1-wait for another compute operation.

       <I> Stop </I> wianuel <I> operations </I> (Fig. <B> 1, </B> 2, <B> 8, 11 </B> and <B> 13.) </B> Sometimes you want to stop a multiplication or division operation before the automatic breakpoint. <B> A </B> This effect is provided with a stop button 440. This button (fig. <B> 1, </B> 2, <B> 8, </B> 13) slides on -Lm finger 441 of the frame, and it is recalled from bottom to top by a res sort 442. When the key is lowered, a notch 443 made in its upper part is placed opposite a slide 444.

    The arrangement is such that a backward movement of the key 440 engages the notch 443 on the edge of the slide 444 which thus keeps it lowered. A finger 4-15 is engaged in a slide 4-16 of a lever 447. Lowering the button 440 causes the lever 4.47 to pivot in the opposite direction. <B> to </B> the clockwise one.

   The posterior end of the vier 447 is superimposed <B> to </B> The end of a lever 448 oriented transversely in the machine, to place the other end under the branch of the lock 402 of the extension key <B> 395. </B> The operation of the stop ton 4-10 thus frees <B> the </B> extension key <B> 395 </B> if it is lowered and cancels any blocking of the shaft <B> 303 </B> provided for automatic shutdown.



  The front end of lever 447 is normally placed <B> to </B> the back of a finger 449 of the lever <B> 151 </B> to prevent the elai from pivoting beyond its middle position. Lowering button 440 cancels this blocking of the lever. <B> 151 </B> and, allows it to pivot to the end of its stroke.

   The lever <B> 151 </B> (fig. <B> 11) </B> is part of a stopper of the digits of the multiplier, and it is connected to the cursor <B> 157. </B> The posterior end of this slider is normally applied against a finger 450 of the lever <B> 302 </B> supportive of the tree <B> 303, </B> when the cursor-multiplier <B> 110 </B> occupies the position <B> 0. </B> In multiplication operations, moving the cursor <B> 110 </B> towards its subnormal position also moves the lever 148. But, since the finger 449 of the lever <B> 151 </B> is blocked by the lever 447, the lever <B> 151 </B> does not move and the spring <B> 150 </B> gives in.

   On the contrary, if the stop button 440 is depressed, the lever <B> 151 </B> can move freely when the cursor <B> 110 </B> is brought <B> to </B> the subnormal position. <B> E </B> then drives the cursor <B> 157 </B> backwards to do it, we <B> to </B> make cooperate with the -finger 450, faq rotate the shaft <B> 303 </B> to initiate an automatic shutdown operation in the manner previously described.

   Grace <B> to </B> the lengthening of the spring between the 30Ô shaft and the Ô05 lever controlled by the bars <B> to </B> characters, the presence of a <B> 0 </B> on the bar <B> to </B> characters <B> 35 </B> of the lowest column is inessential <B> to </B> this moment, the spring <B> 150 </B> being powerful enough to overcome this resistance.



  As indicated in the description of the multiplication, the cursor <B> 110 </B> is brought <B> to </B> the sulmormal position in the last calculation cycle with any number of the multiplier. In the chapter Quo holds extended predetermined, it was also stated that the drive pawl <B> 268 </B> of the slider-multiplier can freely push this slider into any feedback correction cycle.

   This cursor movement <B> 110 </B> takes place during normal or extended division operations starting from position <B> 0 </B> towards the subnormal position. Accordingly, after determining any digit of the quotient, or after the last cycle for any digit of the multiplier, the lowering. button 440 can reset the cursor <B> 157 </B> for <B> de- </B> trigger an automatic shutdown of the machine. This stop key 440 does not intervene when the machine is set to a predetermined number of digits of the quotient, because the cursor <B> 110 </B> does not then occupy its position <B> 0 </B>.



   <I> Manual release of the cradles. </I> (Fig. 5.) If it is. necessary to make a correction at any point after the multiplication or divisor cradles have been put in place, for example if one of the keys <B> 160 </B> and <B> 325 </B> for multiplication or division is operated while the machine is unplugged, the lock of these cradles can be retracted <B> to </B> using a correction key 451.

   This key, whose normal function is to bring the oscillating frame back <B> 32 to </B> the starting position for erasing an incorrectly entered number is provided with a ramp 452 (fig. <B> 5) </B> which occurs during the lowering of the key 451 to rotate a bracket 453 carrying a finger 4.54 cooperating with the edge of the ramp 452. The right end of this bracket 453 has a finger superimposed on the lock <B> 166 </B> cradles of multiplication and division <B> 161 </B> and <B> 328. </B> By means of the bracket 453, lowering the button 451 therefore also lowers the lock <B> 166 </B> to release the cradles if they have been put in place by mistake.

       <I> Printing the decimal point. </I> (Fig. <B> 3 </B> and <B> 10.) </B> A special 455a key is provided to print a decimal point between the numbers of the multiplier or quotient.

    All factors having been calculated, and the ma chine being delivered <B> to </B> zero, we rotate the keystroke 52 to bring the gtile decimal turn of the digits of the multiplier or the quotient to the point of impression, and we move the decimal key, ## 455a ,. This key (fi. <B> 10)

   </B> is articulated on a journal 456 and Zn comprises an upper branch which, when the key 455a is lowered, is brought in re- gard dun heel 457 of a lever 458 controlling the hammer 54 of the counting bar. <B> He </B> should be remembered that the counter bar 242 has a character <B> 37 </B> at the point of impression when this bar is in its lowest position. This character <B> 37, </B> generally representing the sign <B> -, </B> is used as an indicator for the decimal point.

    As shown in fi-. <B> 3, </B> the lever 458 is normally released with a finger 459 from the printing hammer 54. When it rotates in the opposite direction <B> to </B> that of the needles of a watch (fig. <B> 3), </B> the lever 458 cooperates with the finger 459 and prevents the impression movement of the hammers 54 when the latter are released. The upper branch of the decimal key 455a prevents, when the key is lowered, the descent of the lever 458 and allows the release of the hammer 54 at the usual moment during the cycle.



  Another branch 460 of the button 455a is, t oriented towards the rear and cooperates with a branch of a bracket 461 (fig. <B> 10) </B> whose opposite branch is engaged under a heel of the # 7I <B> c </B> connecting rod 4622, which is the key control connecting rod of the coupling device, so that the operation of key 455a initiates a cycle of the machine. As this cycle is a normal addition cycle, no number should be written on the pins. <B> 33 </B> to be recorded in the totalizer <B> 61. </B>



  Key 455a is locked in its lower position until the end of printing of the decimal point by a plate 463 (fig% <B> 10) </B> sliding on two fixed fingers 464 and presenting -a heel 465 which engages on a finger <B> -166 </B> of the decimal key 455a when it is down. A spring 467 interposed between the key 455 and the locking plate 46a urges the latter towards the locking key position, the key 455a itself being recalled. <B> to </B> the normal position by a spring 470.

   The posterior end of the plate 463 carries a click 468 requested by a. spring in the opposite direction <B> to </B> that of the hands of a watch, on a solid finger 469 of plate 463. During the first half of the cycle, a plate 471 forming part of the return mechanism of the impression hammers and actuated by the turntable <B> 126 </B> of the tree <B> 96 </B> passes opposite the end of plate 463 and rotates pawl 468.

   During the return stroke of the plate 471, the latter cooperates with the pawl 468 to cause a, advance the plate 4.63 and to release the whole decimal 455a which then returns. <B> to </B> the normal position.



       Non-registration <I> by blocking the keys. </I> (Fig. 4 and <B> 10.) </B> A lock is provided for the multiplication and division keys <B> 160 </B> and <B> 325, </B> to cilipêeher the operation of these keys if no number has been written on the pins <B> 33. </B> The operation of the machine without any number inscribed on the spindles is normally an operation of taking a sub-total or a total and would result in a deterioration, if this operation were carried out after the re- ,,

  Ia-e commands <B> of </B> multiplication or <B> 1 1 </B> division. A lock 475 (fig. 4) is integral with a shaft 476. If no number is entered and if the oscillating frame <B> 32 </B> occupies the starting position, this lock is placed on a branch of a lever <B> 163 </B> connected to the multi plication cradle <B> 161. </B> This lock prevents the lever from pivoting <B> 163 </B> and thus blocks the keys <B> 160 </B> and <B> 325 </B> which rotate <B> the </B> lever <B> 1.63 </B> when they are lowered.

       A lever <B> 477 </B> (fig. <B> 1.0) </B> fixed <B> to </B> the other end of the shaft 476 is biased backwards - by a spring <B> 478 </B> to move the lock 475 away from the lever <B> 163. he </B> cooperates with the heel <B> 195 </B> of the cursor 194 connected to the oscillating frame <B> 32 </B> and occupies its bedside position as long as no number is written on the pins <B> 33. </B> As soon as a number key is lowered to move the oscillating frame <B> 32, </B> the cursor 194 moves back to release the lever <B> 477 </B> and to allow spring 478 to <B> de- </B> place the lock 475 towards an inactive position in which it releases the keys <B> 160 </B> and <B> 325. </B>



   <I> Printing symbols. </I> (Fig. <B> 3, </B> 4 and <B> 6.) </B> A bar <B> to </B> characters <B> 35 </B> (fig. 4) intended <B> to </B> printing symbols and similar to bars <B> to </B> usual characters is provided to indicate the operation performed.

   This bar <B> 35 </B> has four characters <B> to </B> symbols <B> </B> c <B>, </B> X, <B> - </B> and CR. During addition cycles, this bar <B> 35 </B> rises until a heel 480 of its lower end butts against a branch 481 descending from the subtraction lever <B> 78. </B> This branch 481 is articulated to the lever <B> 78 </B> and returned by a spring 483 to the position shown in FIG. 4, in which it is applied against a finger 482 of the lever <B> 78. </B> In this position of the bar <B> 35, </B> the highest character is placed opposite the printing point, but the bar is not high enough to block lever 458 (fig. <B> 3)

   </B> of the corresponding printing hammer 54. As a result, no symbol is printed.



  In the no-to-add and total-take operations, lowering the key <B> 99 </B> moves a lever 484 by the usual components (fig. <B> 6) </B> to bring it under a finger 485 of the symbol lever 458, as in the case of the decimal key 455, to prevent the descent of the lever 458 and to allow the hammer 54 to operate. This results in the printing of the symbol <B> </B> here <B> </B> to indicate a non-addition or total dlin take operation.



  When the multiplication cradle <B> 161 </B> occupies its working position, a lever 486 (fig. 4) articulated a-Li trunnion <B> 165 </B> and connected <B> to </B> a connecting rod <B> 487 </B> can lower freely. A spring <B> 488 </B> hanging <B> to </B> the connecting rod <B> 487 </B> causes it to reverse when the journal <B> 165 </B> is moved away from lever 486 and rotates branch 481 away from heel 480 of the bar <B> to </B> symbols) 5. The heel 480 then rises during the cycle to come up against a shoulder 489 of the slider <B> 81 </B> and to place the character of the symbol X next to the printing point.

   This symbol intended <B> to </B> the multiplication is printed -in each of the consecutive operations as long as the cradle <B> 161 </B> occupies his working position.



  When the cradle of division <B> 328 </B> is set up with the multiplication cradle <B> 161, </B> the finger <B> 329 </B> of the cradle <B> 328 </B> is placed under lever 486 to hold it <B> to </B> the normal position so that the bar <B> to </B> symbols <B> 35 </B> stay in the lowest position. This position is the same as for an addition operation. Since printing takes place in a reverse-addition cycle, no symbols are therefore printed for division operations.



  The cursor <B> 81 </B> is the inscription cursor for the subtraction. When moved to the right of fig. 4, it conditions the machine for subtraction. In this position <B> to </B> right, branch 481 and shoulder 489 are <B> to </B> right of heel 480 and bar trajectory <B> to </B> symbols <B> 35 </B> until <U> that </U> the heel 480 comes up against the anterior end of the slider <B> 81, </B> which places the character CR, next to the printing point.

       Since the cursor <B> 81 </B> moves to the right during negative totalization operations, this symbol is used to indicate these negative totalization operations. The cursor <B> 81 </B> - also move to the right for subtraction operations. <B> A </B> Unless it is prevented, the bar <B> to </B> symbols characters <B> 35 </B> rises to print CR for subtraction operations.

    To stop the bar <B> to </B> symbols <B> 35 to </B> the third position, that is to say <B> to </B> the position <B> -, </B> a descending arm 490 (fi-. <B> 10) </B> is articulated to the main frame. <B> He </B> is normally positioned to cooperate with the heel 480 and to stop the bar <B> 35 to </B> the position <B> - </B> to indicate subtraction operations. A lowering of the key <B> 99 </B> of non-addition in the manner previously described, passes the lever 484 under the finger 485 of the lever 458 controlling the printing. A connecting rod 491 interea- lated between the lever 484 and the lever 490 advances the latter towards the anterior position to move it away from the heel 480 when the button is pressed. <B> 99 </B> is lowered.

   If the cursor <B> 81 </B> is moved rearward to command a negative totalizing operation, heel 480 is not <B>. </B> Irresponsive as long as the character CR is not placed at the printing point.

 

Claims (1)

CLAIM: Calculator-printing machine, comprising a mechanism operating, in cycles, an inscription mechanism advancing by one step in a higher rank for each digit which <B> y </B> is entered, a totalizer, -a device to pass through said totalizer the values of the writing mechanism, additively or subtractively, a multiplication mechanism controlling the repeated cycles of said mechanism operating in cycles, a return mechanism which, during a multiplication and a division, recalls the mechanism for registering a step to divide the maltiplicand or the divisor by the factor <B> 10, </B> and a bar <B> to </B> characters counting down from "iin step < B> at </B> each cycle of multiplication or, of division, characterized in that it eom.- takes an organ of laying of the multiplier <B> (109, 110), </B> which is movable in a direction <B> to </B> from the normal zero position to any one of several numerical positions corresponding <B> to </B> the value of the multiplier, and which has a subnormal position in which <B> it </B> moves one step in the opposite direction beyond the normal position in the last <B> cycle </B> of addition during a multiplication - eation, a control mechanism of the multiplication <B> (167, 169, 181, 180) </B> allowing the repetition of addition cycles <B> y </B> including the recall of said organ laying the multiplier and advancing said counter bar (242) by one step per cycle, and causing the recall of a step of the registration mechanism <B> (31, </B> 40, <B> 193) </B> and the recall of the counter bar (242) only when the setting organ of the multiplier is moved from the subnormal position <B> to </B> the normal position, and a division control mechanism <B> (325, </B> 3570, <B> 237, </B> 104 , <B> 330, </B> 334, <B> 328) </B> to activate the multiplication control mechanism and thus cause the repetition of subtractive cycles as long as the totalizer <B> (61) </B> contains a positive remainder and determine an additive registration in order to bring back the count bar el, to activate the <B> (268) </B> mechanism of reminder of the registration mechanism of one step when the remainder in the totalizer is negative, SUBCLAIMS: <B> 1. </B> A printing calculator according to claim, characterized in that, said coin multiplication control mechanism takes a <B> (160) </B> multiplication key which , when it is activated, initiates the operation in cycles, as well as a locking device <B> (178, 182) </B> which keeps the said operating mechanism in operation in cycles <B> (96) </B> until <B> this </B> that <B> the </B> positive locking device is, triggered by the passage of the adjustable member from the normal position <B> to </B> the subordinate position. 2. Calculator-imprinie-tise according to the sub-claim <B> 1, </B> characterized in that the actuation of the multiplication key activates means which suppress the printing <B> to </B> all addition cycles as long as the adjustable member is in any of the positions other than the normal position and which actuate <B> to </B> character bars, with a view to impression, when this organ passes from the subnormal <B> to </B> position the normal position. <B> 3. </B> A calculator-printing machine according to sub-claim 2, characterized in that it comprises a linkage (148, <B> 151, 157, 303, 305, </B> <B> 311, 312, </B> 202, 194, <B> 193) </B> triggered by the setting or gane of the multiplier occupying its subnormal position and by the lifting of a bar <B> to </ B > numerical characters of the lowest rank in its movement above the normal position to allow subsequent operation of the machine. <B> - </B> 4. Calculator-printing machine according to the claim, characterized in that it comprises an extended calculation mechanism <B> (395 to </B> 400) allowing the cycling of the machine to continue beyond the automatic stop multiplication and division calculations until the step <B> to </B> step callback of the write mechanism has eliminated -from this mechanism <B> the </B> multiplicand or the divisor, depending on the type of operation performed. <B> 5. </B> Calcflator-printing machine according to claim, characterized in that the setting member of the multiplier is also capable of being actuated when a division is effected, and prevents automatic shutdown normal of a division operation until the quotient contains a number of digits which is determined by the position in which this organ has been placed. <B> 6. </B> Calculator-printing machine according to the claim, characterized in that it comprises a stop mechanism (Ô86 <B> to 392) </B> in the event of an error which is set in action by the count-read bar each time that following a <B> de </B> error of the divisor or the dividend, no exceeding of the totalizer occurs during a predetermined number of cycles. <B> 7. </B> Calculator-printing machine according to claim, characterized in that it comprises -a mechanism <B> (338, </B> 334, 345, <B> 352) </B> automatically controlled by the mechanism controlling the division, to prevent, during division operations, the recording of a fugitive unit. <B> 8. </B> Calculator-printing machine according to claim, characterized in that it comprises a mechanism (415 <B> to </B> 430) for taking a total, capable of being put in a first position in which it retains the total in the totalizer and prevents a printing of this total, and in a second position in which it prints the total and resets the totalizer to zero.