US1848549A - reiger - Google Patents

Description

March 8, 1932. I REIGER 1,848,549 CALCULATINQ MACHINE Filed July 28, 1927 5 Sheets-Sheet 1 [72 ve zfor: @oZULLZf Bigge March 8, 1932.

G. REIGER CALCULATING MACHINE Filed July 28. 1927- 3 Sheets-Sheet 2 March 8, 1932. RElGER CALCULATING MACHINE s Sheets-Sheet s Filed July 28. 1927 G ZU LZf fia eyer B M Alia/"hey levers 2 of said keys pivoting on a common- Patented Man 8, 1932 GOTTHILF RIEGER, OF CANNSTATT-ON-THE-NECKAR, GERMANY' CALCULATING MACHINE Application filed July 2 8, 1927, Serial No.

The subject of the present invention is a calculating machine, particularly intended for totalizing, that is to say, any desired-number of entries are mechanically added to- 5 gcther so that both the individual items and the total cannot only be read ofl, but also printed serially on a strip. Multiplications and subtractions can also be carried out with the calculating machine of the invention.

The calculating machine of the present invention is of the type in which only one key is provided for each numeral, and in which by depressing the corresponding keys, the successive numerals of the items are entered in the machine, byadjusted striker bars being drawn into contact with the setting bars which are connected with counting and writing mechanism. t

The subject of the present inventlon 1s illustrated in the accompanying drawings by a typical embodiment.

Figures 1 and 2 are a side elevatlon and vertical longitudinal section of the machine.

Figure 3 is a plan or horizontal section of same. 7

Figure 4 is an end elevation of the setting device.

Figure 5 is a side view of the machine showin the hand lever in turned down position.

igure 6 is a vertical section of the machine showing one of the keys depressed.

Figures 7 and 8 are a side and rear elevation of a portion of the counting mechanism with digit transfer device and zero setting.

Figures 9 andlO are a side elevation and rear elevation in section of a portion of the digit transfer device and the'actuating means for same.

showing a depressed key with the frame swung to the right.

Figure 12 is a side view of a position of the wrist plate.

A key 1 is provided for each unit 0-9, the

cross shaft 3, mounted in the casing 4. Depressing a key 1 causes a push bar 5, common to all the keys 1, to be displaced to a greater or smaller extent, corresponding to the numerical value of the key operated at the Figure 11 is a side elevation of a detail- 209,071 and in Germany'liarch 26, 1926.

time (Figure 2), and also rocks a ratchetmechanism frame 6.

The displacement of the bar 5 is effected bya pivotally mounted frame 7, adapted to turn about the pin 8 in the casing 4 and inovably connected with the bar 5. A widened portion of the key lever 2 is provided with a slot 9 of substantially T shape, and all these slots are traversed by a common roller 10 mounted on a cross shaft 11 in the frame 7. The upwardly directed branch of the slot 9 is curved at top and bottom in the shape of an are around the pivotal axis 3 of the key lever 2. In consequence the frame 7 moves only when the roller 10 moves in the central'portion of the slot 9, the bar 5 being then displaced. In order to shorten its stroke it is displaced from a central position in which the striker bars 14 are situated, that is to say, it is moved forward by one key 1 and back by another. \Vith this object the slots in alternate levers are curved in opposite directions, as shown in Figure 2. In order that the bar 5 may describe its full stroke in the event of any lost motion between the roller 10 and slot 9, the lower edge of the key lever 2 is provided with a notch 9 which engages with a coacting member 10 on along arm of the frame 7 and makes good an such lost motion. At the'operative end 0 the bar 5 is a notch 12 in which engage in succession the noses 13 of striker bars 14 mounted loosely and so as to be axially displaceable for instance in a drum 15, rocker slide or the like (Figures 2, 4, 5 and 6) and are pressed against the drum in a radially detachable manner by a surrounding spring 16. Displacing the bar 5 causes the bars 14 to be moved forwards or .rearwards to an extent corresponding to the numerical value of the depressed key 1. They are provided at the front end with saw-tooth racks 17 by means of which they I can be locked in the position occupied for the time being since they project over a stop disc 18 on the drum 15.

In the'position of rest of the machine, the push bar 5 is not clutched to any of the striker bars 14, but is in a position in which, when the drum 15 is turned, the nose 13 of the bar 14 can enter directly into the notch 12 of the bar 5. When a key is depressed, the drum 15 is first turned, whereupon said nose 13 enters the notch 12 of the bar. During this time, said bar receives no movement as described.

As soon as the clutching of a striker bar to the push bar 5 has taken place, the latter moves forward or backward in accordance with the number value of the depressed key. In the final upward return movement of the key, the push bar is brought to rest again, while the drum 15 is still being turned, until the nose 13 'of the clutched striker bar has passed through the notch 12, i. e., is released. At the same time, the bar 14 leaves the wedgeshaped cam 75", whereupon the spring 16, engaging it, can again act and clutches the toothed striker bar with the stop disk 18.

The actuation of the drum 15 which turns on a horizontal shaft 19 is effected by the ratchet frame 6. This runs under all the key levers 2 so that when any of the keys 1 is depressed, the frame 6 swings and imparts a forward movement to the drum 15. This is effected by a pawl 20 on the rear end of the rockable frame 6, said pawl engaging a ratchet disc 21 mounted on the drum shaft 19 and moving the drum round further every time a key 1 is depressed. In order to ensure that this movement is complete every time and to prevent the ratchet frame 6 from slipping back if the movement is incomplete, a check lever 22 is provided which hangs down from a pivot 23 and is drawn by a spring 24 into contact with the projecting pivot 25 of the pawl 20. This check lever is provided with notches 26 in which the pivot 25 is adapted to engage when a key lever 1 isdepressed, and thus prevents the-frame 6 from swinging back. The pivot 23 also supports a releasing pawl 27 which is kept pressed against the ratchet disc 21 by a spring 28 and engages the back of the lever 22 by a finger 29. If a key. lever 1 has not been fully depressed the pawl 27 lies in contact with the head of a tooth on the ratchet disc, but if the key lever is depressed to the full the pawl 27 drops into the corresponding tooth gap, and its finger 29 throws the check lever 22 out of action and allows the frame 6 to retreat.

The drum 15 is never turned back again afterthe adding operation since it is always turnedin the same direction as shown in Figs. 2 and 4. The. return to initial position of the striker bars14 (central position) is always performed by the cam 75 situated outside of the calculating zone. But to render the return movement possible, a fixed wedgeshaped cam 75 is provided, by which the individual striker bars 14 are raised out of the stop disc 18, during the turning of the drum, until they have been again inserted (adjusted) by the push bar 5 in the next calculating operation. t

In order to prevent a key lever 2 from swinging back unaccompanied by the ratchet frame, said lever is engaged by a two-arm pawl 30, turning loosely on a pivot 31 on the frame 6 and held against the key lever 2 by a spring 32, so as to engage behind a nose 33 thereon. Hence the key 1 cannot return without the frame 6. Shortly before the key lever 2 regains its top end position the pro jecting arm 34 of the pawl 30 strikes against a releasing cross bar 35. When the return stroke of the frame 6 is completed the key lever 2 is released.

When all the keys 1 corresponding to the item for the time being have been depressed, and the striker bars 14 have thus been set in accordance with the amount, this amount must be transmitted to central counting rollers 36 and printing discs 37 by means of setting bars 38. A hand lever 39 adapted to turn on a pivot 40 (Figure 1), is provided for this purpose and is engaged by a connecting rod 41 which turns a wrist plate 42 pivotally connected by means of a pin 44 with a feed frame 43. The frame 43 turns on a pivot 45. The wrist plate 42 is controlled by a slot 46 in which engages a roller 47 mounted on a fixed point in the casing 4. The central portion of the slot 46 is shaped in such a form that the pivotal point 44 of the plate 42 does not move when the hand lever 39 is being operated.

Toothcd set bars 38 are mounted above the drum 15 so as to be displaced forward and rearward horizontally. Each of the bars 38 is connected by a spring 48 with the driver 49 pivoted on the frame 43, and is provided on the underside with a nose 50 the end of which lies in the path of one of the noses 13 of the bars 14 (see Figures 2 and 4-6). If now the frame 43 be swung forward by turning the hand lever it draws the setting bars 38 with it until their noses 5O meet the noses 13 of the striker bars 14, thereby stopping the setting bars 38 and allowing them to describe only a movement corresponding to their numerical value. Nevertheless, on account of the interposed tension springs 48, the hand lever on the other hand can be given a full stroke.

The front ends of the setting bars 38 carrying the racks 51, are adapted to move up and down, in order to bring the rack 51 into engagement with a gear wheel 52 of the central counting rollers 36 during the forward move-- ment, and to disengage in the return movement. The lifting of the bars 38 is also effected by the hand lever 49, for which purpose the bars 38 rest in front on a frame 53 adapted to rock up and down on a pivot 54, and resting by means of studs 55 on both sides, on gear levers 56 which are lifted by the hand lever 39. This lever controls the lever 56 by means of a bar 57, the free end of which is provided with a slot 58, engaging a pin 59 on the lever 56 so that the hand lever 39 does not actuate the lever 56 until near the end of its stroke. On the lower end of the levers 56 is a slot 60, which accommodates a roller 61 mounted .on a fixed point in the casing 4.

' The first portion of the slot 60 is so disposed fhat the levers 56 merely turn on the pins 55, the slot then taking a downward direction in consequence of which the levers 56 and frame 53 are lifted when the roller 61 reaches this portion of the slot. In this way, shortly before the hand lever 39 reaches its front end position, the racks 51 are caused to engage the pinion 52 of the central counting rollers 36. At about the same moment the item is printed on the paper strip 63 through the writing mechanism 62 swinging into contact with the printing disc 37. The discs 37 are provided with type 64 and engage with a second rack 65 on the setting bars 38. The writing mechanism 62 also is operated by the hand lever 39, a nose 66 of which depresses a lever 68 turning on a pivot 67 and drawing the strip device 62-by means of a rod 69- into contact with the type 64 onthe printing discs 37 when the impression is to take place. To record the total the device 62 is movedforward a little by means of a lever (not shown) and is then drawn into contact with the type on the disc 70 which prints the total.

The hand lever 39 is next moved from its forward position into its original position, thereby returning the frame 43 and driver 49 into their first position. In this movement, the setting bars, which have been in engagement with'the pinions 52 are actuated by the driver 49, thus transferring the just recorded item to the central counting rollers 36, that is rotating these in a corresponding manner and reversing the printing discs 37.

When the setting bars 38 have been returned so far that the entire item is transferred to the central counting rollers 36, the central portion of the slot 46 in the wrist plate 42 passes over the roller 47, thereby interrupting the return movement of the frame 43, and thus that of the -driver 49 and set ting bars 38'. During this stoppage, the end of the slot 58 in the rod 57 comes in contact with the pin 59 and swings back the gear lever 56, this latter then descending under the action of its slot 60 and causing the bars 38 to be disengaged by means of their frame 53, from the pinion-52 of the central counting rollers 36. In this position the printing discs 37 are set back exactly to zero. The final portion of the slot 46 now passes over the roller 47 and moves the frame 43, driver 49 and setting bars 38 still further back, so that a further turn is imparted to the printing discs 37 and the gap 71 in said discs comes opposite the point of impression on the paper 63 instead of the type 64 (Figure 1).

The return stroke of the hand lever 39 also displacesa pivoted thrust bar 72, the nose 73 of which encounters an arm 7 4 (Fig. 3) on a recall member 75 and actuates this latter (Figures 1, 2, 3). The member 75 has a segmental extention 76 which engages behind the advanced striker bars 14 and pushes them back until their last (11th) teeth engage the stop disc 18. An oblique surface on the thrust bar 72 now encounters a release cam 77, which lifts the bar 72 and thus releases the arm 74 of the member 75 the latter being returned to its original position by a spring 78. The return of the striker bars 14 into middle position in which they are engaged by the setting bar 5 is effected, during the rotation of the drum 15 by a spiral cam 75 situated behind the drum and below the level of the racks. Since the striker-bars are held b the stop disc 18, they cannot be directly disp aced and therefore a wedge-shaped cam 75 is provided in front of the drum on which the bars 14 slide so that their racks are disengaged of simplicity, is not shown, but is located' outside the casing of the machine on the shaft of the cam 77. When the machine is used for addition, this cam has the position shownin Fig. 1.

If a wrong item is introduced into the machine this can be cancelled bypushing back the member 75, before it has been transmitted to the central counting rollers 36 and the paper strip 63. The erasing of wrongly posted items is effected by pushing back by hand the arm 74, projecting laterally from the casing and connected with part 75.

During the return stroke of the hand lever 39 it sets a spring 79 '(Fig. 9) for the di et transfer of the counting mechanism. or this purpose the pivot 40 carries a loose toothed quadrant 80 which, during the return movement of the hand lever is coupled with the latter by means of a pawl 81 engaging behind a nose 82 on the lever (Figures 9 and 10) When the lever has nearly reached 1ts. rear end position, the pawl 81 strikes a stop 83 and is lifted. The released quadrant a spring 88 in an outward direction against a saw-tooth driver rack 89.. On thehand lever 39 being reversed, the pinion.84 turns idly till with it, but when the quadrant swings back the pinion turns the reel. 86. This is provided with spirally offset projecting vanes (Figures 7 and 10) which push back the pre-set digit transfer members lying in their path and thus effect the transfer of the digits.

When a ten movement must be carried out, the long tooth 91 on the central counting roller 36 engages the indicator by the edge of the lever 93. This willthereby be swun around its pivot 92 and the pawl 94 carried thereby will be lifted so high that its pivot point will enter the mouth 97 of the check pawl 96, while this will be swung around by its spring,- which heretofore was prevented from swinging due to the pawl 95. In this way the lever 98 is maintained in raised position. The pawl 94 in this position grips the next tooth, thereby operating the counting roller 36. After this preparation, the vane 90 of the reel 86 comes into operation. By its rotation it enga es the nose of its track of the lever 96 whic lies over the mouth 97, and slides its back on further rotation. Thereby the pivot 95 and therewith the pawl 94 will again be free. By the further rotation the vane 90 will contact with the outer edge of the lever 93, which lies over the pivot 95, carries this lever 93 along whereby the pawl 94 will move the central counting roller 36 one toot-h.

The preparation of the digit transfer mechanism is effected by a driver 91 provided after each 10th tooth on the central counting rollers 36. This driver swings back a lever 93lying in its path and pivoted at 92 carrying a pawl 94 pivoted at 95, until the mouth 97 of the check pawl 96 slides over the pivot 95 and thus checks the lever 93 and the pawl 94. In this position the pawl 94 lying in the path of the next higher numerical position of the central counting roller 86 engages behind the next tooth in said roller,

' and is drawn into engagement by the s ring 98 so that the rotation of the reel 86 orces this central counting roller to move with it. The position shown in Fig. 7 represents the location of the control mechanism after the control operation. The vane 90 of the reel 86,

in the rotation, first pushes back or releases (see Fig. 7) the check pawl 96 and, in the further travel, arrives on the edge (corner) of the lever 93, whereupon-by means of the pawl 94 connected with the same-the counting roller 36 is positively moved forward. The spring 98 has, in the main, only the function of securely holding the checlr. pawl 94 in the teeth of the counting roller and of preventing an undesired setting in preparation for a ten movement.

To prevent the spring 79 from turning the reel 86 too quickly, a fan governor 100 meshes withdthe reel pinion 99 and regulates the spee In the event of the spring 79 failing to act, the nose 82 of the hand lever 39 engages behind the quadrant 80 on the next movement of the lever, and )ushes it backthus positively effecting the igit transfer.

The counting mechanism is returned to zero position by a swinging movement of a cross bar 101 about toothed discs 102 which gear meshes with the central counting rollers 36', and in which each 10th tooth 103 is longer than the rest and extends into the path of the cross bar 101. When the bar is rocked all the discs 102 are actuated and are rotated until the counting mechanism is set back to zero. To facilitate rocking the zero bar 101 it is mounted in a frame 104 adapted to be swung round the axis 106 of the discs 102 by a handle 105.

In passing the zero position, the ten setting mechanism must be rendered inoperative. For this purpose, there are provided two transverse bars, which are mounted in two 3-arm levers 108, which are pivoted on shaft 107, one on each side of the counting mechanism. The downwardly projecting arm 109 is swung by an eccentric 110 on the hub of the zero frame 104, thus causing an arm 111 of the lever 108 to disengage the stop pawl 96 and an arm 112 to disengage the pawl 94. When the zero frame 104 is turned back the parts return into their operative positions. The zero frame 104 is shown in the position of rest, i. e., in that position which it takes during the calculating operation. During this, the teeth of counting rollers 102 slide past under the pawl 101, which is common to all the rollers. This pawl was previously described as a cross bar. Since the rollers 102 carry twenty teeth, the zero position is reached by a movement of the zero frame 104 through 180. An engagement of this frame by the adjacent mechanism is prevented because it is returned to its position of rest, after the zero setting, by a recoil spring (not shown), as described.

To lock the frame 7 in the position of repose, a grid or engaging member 113 attached to the frame 6 engages a pin 114 on the frame 7 when swung into top position.

To assist the return movement of the setting bar 5, a pair of levers 115 (Fig. 1) turn ing on the pivot 8 is provided which simultaneously engages a fixed stop 116 and a pin 117 of the bar 5, and is under the influence of a spring 118.

What I claim is 1. A calculating machine comprising a key for, each numeral; a common push bar provided for all of the keys rihcr bars adapted to be set by the push bar in accordance with the numerical value of the keys; a counting mechanism having counting rollers; a plurality of setting bars, said striker bars limiting the forward stroke of the setting bars and the setting bars being adapted to rotate the counting rollers and a rotary drum acting as a common support for the striker bars which are axially displaceable therein, said bars being successively coupled with the push bar and are brought into the path of the setting bars after a rotation of the drum.

2. A calculating machine comprising a key for each numeral; a common push bar provided for all of the keys; striker bars adapted to be set by the push bar in accordance with the numerical value of the'keys; a. counting mechanism having counting rollers; a plurality of setting bars, said striker bars limiting the forward stroke of the setting bars and the setting bars being adapted to rotate the counting rollers; a rotary drum acting as a common support for the striker bars which are axially displaceabl-e therein, said bars being successively coupled with the push bar and brought into the path of the setting bars after a rotation of the drum; a stop disc on the drum; and saw tooth racks provided on the striker bars, said bars being flexibl pressed against the drum and the racks being adapted to engage the stop disc.-

3. A calculating machine comprising a key for each numeral; a common push bar provided for all of the keys; striker bars adapted to-be set by the push bar in accordance with the numerical value of the keys; a counting mechanism having counting rollers; a plurality of setting bars, said striker bars limiting the forward stroke of the setting bars and the setting bars being adapted to rotate the counting rollers; a rotarydrum acting as a common support for the striker bars which are axially displaceable therein, said bars being successively coupled with the push bar and brought into the path of the setting bars after a rotation of the drum; a stop disc on the drum; and saw tooth racks provided on the striker bars, said bars being flexibly pressed against the drum and the racks being adapted to engage the stop disc, each of said striker bars having eleven teeth, the eleventh of wfnich is so disposed that when it is set in operative position a gap instead of a character comes into the printing position.

4. A calculating machine comprising a key for each numeral; a common push bar provided for all of the keys; striker bars adapted to be set by the push bar in accordance with the numerical value of the keys; a counting mechanism having counting rollers; a plurality of setting bars, said striker bars limiting the forward stroke of the setting bars and the setting bars being adapted to rotate the counting rollers; a rotary drum acting as a common support for the striker bars which are axially displaceable therein, said bars being successively coupled with the push bar and brought into the path of the setting bars after a rotation of the drum; a stop disc on the drum; saw tooth racks provided on the striker bars, said bars being flexibly pressed against the drum and the racks being adapted to en age the stop disc, each of said striker bars aving eleven teeth, the eleventh of which is so disposed that when it is set in operative position a gap instead of a character comes into the printing position; a spiral cam provided rearwardly underneath the drum and in a central position corresponding to the position of repose of the pushbar for displacing the striker bars; and a wedgeshaped and concentric cam mounted before the front end of the drum for lifting the teeth of the striker bars out of engagement with the stop disc.

5. A calculating machine comprising a feed frame; a key for each numeral; a common push bar provided for all of the keys; striker bars adapted to beset by the push bar in accordance with the numerical value of the keys; a counting mechanism having counting rollers; a plurality of setting bars, said striker bars limiting the forward stroke of the setting bars and the setting bars being adapted to rotate the counting rollers; a connecting rod; and a wrist plate having a slot therein and said connecting rod being connected to the plate, said slot being sodesigned that its central portion merely produces a swinging movement of the wrist plate and thus interrupts the movement of the frame durin the further turning movement of the hand fiver.

In testimony whereof I aflix m si GOTTHILF

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