US2305839A - Calculating machine - Google Patents

Description

1942- F. J. BERRENDORF ET AL 2,305,339

CALCULATING MACHINE Filed Sept. 2'7, 1938 '7 'Sheefcs-Sheet l /nveniorm FJ Berr'enelorf and R. Rea Ln 1942- F. J. BERRENDORF ET AL 2,303,839"

CALCULATING MACHINE Dec- 22, 1942 F. J. BERRENDORF ET AL 2,305,839

CALCULATING MACHINE- F'iled Sept. 27, 19158 '7 Sheets-Sheet 3 law lnvenlo/q. FJ: Bel-render and Rfiexdn V Q MW I Dec. 22, 1942- F. J. BERRENDORF ET AL 2,305,839

' CALCULATING MACHINE Filed Sept. 27, 1938 '7 Sheets-Sheet 4 /n venlom;

FJ: B G IBTzcZor-f 372d RLRexL n Dec. 22, 1942. F. J. BERRENDQRF ETAL 2,305,839

CALCULATING MACHINE Fil ed Sept. 27, 1938 I 7 Sheets-Sheet 5 In venzanr F. J. BERRENDORF ET AL 3,305,339

Dec. 22, 1942.

' CALCULATING MACHINE filed Sept. .27, 1958 4 '7 Sheets-Sheet '7 lnvenioq I FJBer-renalorf B anal RRexn Y'Wflomeya Patented Dec. 22, 1942 CALCULATING MACHINE Franz Josef Berrendori', oberndort-on-the-Neckar, and Reinhard Rexin, Aistaig-on-the-Neclrar, Germany; vested in the Alien Property Custodian Application September 27, 1938, Serial No. 231,988

In Germany September 27, 1937 Claims.

This invention relates to a calculating machine, and more particularly to a ten-key calculating machine, and has for its object to provide improved means for simplifying the design and the performance of the machine. In particular there is obtained in comparison with the known machines of this kind a reduction in the time required in carrying out a cycle or calculating operation.

Additional features of the invention will be" come apparent as the description proceeds.

The invention will be described more iuily in conjunction with the accompanying drawings, which illustrate solely by way of example certain embodiments of a ten-key calculating ma chine constructed in accordance with the invention.

Fig. 1 is a side elevational view of one of the adjustment bars. and the pins carrying slide oi the machine in the initial position.

Fig. 2 is a similar view of the parts with the pins carrying slide in the operative position.

Fig. 3 is a plan view of all adjustment bars with the pins carrying slide, the keys being indicated in dash-dotted lines.

Fig. 4 is a perspective view of the locking bar with the lever adapted for its suspension.

Fig. 5 shows diagrammatically an elevational view of the machinehaving the depressible hand lever provided in place of the conventional crankhandle.

Fig. 6 is a, plan view of Fig. 5.

Fig. 7 is a view of the hand drive similar to Fig. 6 in the position of rest, whilst Fig. 8 is a plan view of Fig. 7.

Figs. 9, l0 and 11 are elevational views of the hand drive in various positions of operation.

Fig. 9 showing the position of the partsv following the first idle movement,

Fig. 1c the position of the parts after the working movement, and y Fig. 11 the position of the parts following the second idle movement in the reverse direction.

Figs. 12 to 17 show details of the line spacing mechanism and the appertaining drive.

Fig., 12 is a view of the platen in the elevated position. v

Fig. 13 is a similar view with rocked platen for impression of the types.

Fig. 14 illustrates a modified form of the spacing mechanism with the platen in the position according to Fig. 13.

Fig. 151's an elevational view of the platen drive in the position of rest, with the casing in section.

Fig. 16'is a view of the Operating lever mechanism for the platen shortly before thefrelease of the pawl and before the movement of the platen against the types.

Fig. 17 shows another position of the parts after. the platen has moved against the types.

Figs. 18 to 20 are elevational, plan and bottom views respectively of the machine casing.

In the drawings the numeral I is employed to designate the differentially settable slotted adjustment bars, which serve to register a number in the accumulator (not shown) and one of which is provided for each decimal order and possesses an upwardly extending projection 24.

To the upwardly extending rear abutments 2 of the bars i there are pivoted Figs. 1' to 3 type carrying bars 3 and also the racks 4 which serve to operate the numeral wheels of the accumulator. The bars I are connected by means of springs 5 to setting members 6 (Figs. 1 and 2). The bars 9 and the setting members 6 are mutually guided in pairs and are held in telescoped position by their appertaining springs 5 (Fig. 1). Each setting member 6 is provided with a hookshaped coup-ling lever l, the other arm 8 ofwhich before the setting of a number is held in elevated position by a locking bar 9, so that the operating bolt I0 reciprocated by the machine drive is able to reciprocate freely in the slot in the adjustment bar, and accordingly neither the type bars 3 nor the racks can be actuated by the setting members 6, the springs 5 and the bars I.

The locking bar 9 comprises two steps ii and I2 (Fig. 4). Against the step ii there bear the arms 8 of the coupling levers prior to the setting of a number,- whilst the second step It of the locking bar is situated at a somewhat lower levelthan the step ll, the connecting portionbetween the two steps being inclined so that the arms 8 of the coupling levers 1 sliding thereon can not only be lowered but also raised. The lowering of a coupling arm 8 and accordingly the engagement of the corresponding coupling lever I for the purpose of establishing the driving connection between the bolt l0 and the setting member 5 carrying the coupling lover 7 takes place after eachsetting ofa number in the pins carrying slide l4.

For'this purpose the locking bar 9 is provided with upwardly bent arms 45, by means of which it is suspended at the bearing points I6 on levers I1 pivotally mounted on either side of the slide I4. A spring 20 (Fig. 1) engaging on the one hand with the stud l8 on the lever i1 and on the other hand with the stud l9 on the pin carriage H tends to draw the locking bar 9 upwards against a. stop 2| on the slide H. To prevent an oscillating action of the bar 9 on the levers 11 there is preferably provided a yoke 22, which is mounted in suitable fashion on the frame of the machine. By depression of one of the keys -9 the corresponding pin of the effective row of pins of the slide it is moved into the path of movement of one of the bars 1. Upon release of the key the pin carriage advances in the usual manner by one decimal point, and in consequence the locking bar 9 mounted on this car rlage by means of the levers I! is displaced,with the efiect that the arm of the coupling lever 1 bearing against the step ll of the locking bar 9 slips down on to the step l2, whereby the particular setting member or the appertaining bar.

I is coupled with the bolt ID. The end of the coupling lever l slides down the incline between the steps ii and I2 but not far enough for the hook of the lever to engage behind the lower step II, as shown in dotted lines in Fig. 2. Therefore in this last-named position of the lever I of coupling engagement with the bolt lo, the lever I is not arrested in its movement to the right, by the step l2. This operation is repeated with respect to each new digit. If, therefore, a four-figure number is concerned (Fig. 3), the slide or carriage H has advanced by four steps,

v and in consequence an equal number of coupling levers I have been moved into the coupling position. Upon movement of the handle, or upon depression of a hand lever provided in place of such handle, the four coupled setting members 6 operate the appertaining bars I by means of the springs 5. The projections 24 on the bars i then strike against the pins 23 obstructing their path. The bars '3 remain stationary, whilst the setting members 6, whilst tensioning the springs 5, continue to move until the 91stop 25 has been reached.

The return movement occurs thereupon. In

it is accomplished that the force necesr depression of the said hand lever or for turning the handle is small, as only those springs tnsioned which belong to the adjustment come-n e. in the setting up of a figure,

'" of the remaining bars remain in the case of a calculating maby a motor the output of the latter ely be small.

order to dispense with the conventional type of handle employed in calculating machines, which handle for each operation requires to be turned forwards and backwards to the extent of almost 180, so that a considerable amount of time is wasted. by the large extent of movement in relation to the setting up of a number, this handle is constructed according to the invention in the form of a depressible-lever, which is so arranged to the side of the machine that it can be depressed by the palm of the hand of the operator whose fingers are on the keys, this lever merely requiring to be moved to the extent of approximately 3" for the purpose of completing an operation. A spring tensioned upon the depression Of the lever returns the latter into its initial position.

A lever of this nature, which requires very little additional space and accordingly permits of a compact of the machine, enables the hand th to be held quit-s1 iral se of a ten-key ca oi Kerr: a

obliquely. The zero key is so arranged to the side of the remaining keys and provided with an elongated head or button the same can be readily depressed at any time by the thumb.

In Fig. 5 the hand lever 52 provided with a pressure button 64 is mounted to rock about a shaft 53 carried by a bracket 54 of the machine. Firmly mounted on the shaft 53 is a lever 55, which represents an extension of the lever 52 and engages by means of a link 56 with the short arm 51 of an angle lever 58. This angle lever 51, 58 is mounted firmly on the shaft 3'1, at the opposite end of which there is secured a lever 50 (Fig. 6). The longer arm 58 of the angle lever 51, 58 and the corresponding arm 69 on the opposite side of the machine are each pivoted to a connecting rod 6|, at the front ends of which there are provided longitudinal slots 62, which serve to accommodate the bolt 10.

The head or button 54 provided on the lever 52 is preferably of convex form for ready engagement with the hand. The three rows of keys 1-9 are preferably disposed obliquely in relation to the platen 3|, so that in use the machine is disposed quite vertically to the line of vision of the operator without it being necessary for the hand operating machine to be held in a cramped position.

In Figs. '7 to 11 the arrangement of the hand lever 52 and its connection with the rods BI is the same as in Figs. 5 and 6. The two connecting rods 6| are again provided with longitudinal slots 62 adapted to receive the bolt Hi. The said slots 62 have the object of permitting a sta-- tionary condition of the adjustment bars, or of the common bolt I0 respectively, despite the movement of the rods 6|. In the position of rest of the parts (Fig. 7) pawls 65, which are mounted on the base plate of the machine by screws 56, are pressed upwards by fiat springs 61 into position preventing movement of the bolt [0 to the right, Fig. 7.

Another set of pawls 68, which are pivoted 69 to the connecting rods iii and are acted upon by springs 10, normally have their ends ll resting on blocks 12 and are thus withheld from action on the bolt ill. When the lever 5?: i depressed by the hand of the operator the rods (it are moved to the rear by means of the links and the angle levers above described. The belt ll], however, is at first held by the pawls 65 but after a certain movement of the rods 5! care. edges l3 on. these rods engage pins it secured to the pawls 65 and press the front ends of these pawls downwards, whereby the bolt 10 is freed for movement in the rearward direction in the slots 62 of the rods 61. At the same time the ends ll of the pawls 68 slide off the blocks 12, and the pawls 68 are acted upon by the springs "Ill to engage the bolt I0, whereby in the further backward and forward movement of the rods 6|, said bolt remains rigidly coupled to the latter. It is only when the ends of-the pawls 68 during the forward movement of the rods 6|, encounter the blocks 12 that these pawls again release the bolt 10 for displacement in the longitudinal slots 62, until the bolt [0 again engages the pawls 65, and is arrested while the rods 6| continue to advance into the position of rest, Fig. 7.

During this idle movement a (Fig, 9) the bars i and the bolt IQ common thereto remain stat1onar A cycle of operations has thus been 0 cycle comprises both upon the well upon the or the action a thereof u? returning spring (not shown) the two idle strokes a. and c, between which there occurs the displacement of the adjustment bars I along the stroke b. The bars I, can only be moved up to the 9-stop 25. The bolt III, however, is moved farther through the stroke 0. Therefore, the said stroke c as well as theidle stroke a signify a position of rest for the bars I and the racks 4.

The single distances a, b and c correspond to the angles a, p and -y of the main shaft 31. Accordingto the invention the angles a and y are utilised for the inward and outward rocking movement of the accumulator, for the engagement of the tens actuating lever and for carrying out the tens carrying step.

As explained, therefore, a cycle of operations comprises-not only upon the depression but also upon the return movement of the hand lever an idle movement and a working movement, an idle movement initiating and completing the cycle.

The platen 3| of the machine possesses at either end ratchet wheels 32, which are'engaged by a preferably spring-controlled pawl 33 and permit of rotation of the platen only in the one direction.- The shaft 34 of the platen 3| is carried by two pivoted arms 35,- which are capable of rocking freely about a shaft mounted in the casing 36 of the machine. This shaft is either the same shaft 31 on which there are mounted the levers 58 and 60 for the adjustment bars I, assuming that type wheels 3a are employed driven by racks 3b (Figs. 12 and 13) or, if type bars 3 (Fig. are used, is a shaft 4| parallel to the shaft 31. In the embodiment shown in Figs. 12 and 13 the paper roller 38 is mounted in interchangeable fashion in the casing 36, and the strip of paper 39 leading from the roller 38 to the platen 3| is held in a flat condition against the platen by means of the conventional pressure rolls 40.

The type wheels 3a in the embodiment shown in Figs. 12 and'13 project with their type adjusted by the racks 3b to such extent beyond the upper wall of the machine casing 35 that a clear impression is produced upon contact with the rocked platen 3|. v

A pawl 43, which engages with a tooth of the ratchet wheel 32, is mounted in direct fashion on a stationary eccentric disk 44, and describes with its free end upon the rocking of the platen an arc, the radius of which as compared with the arc of the line last printed upon contact with the types on the type wheel 3a is smaller to the extent of approximately one line spacing. The web of paper 39 accordingly retains its po sition on the platen when the latter is rocked downwards, whilst the pawl 43 moves into engagement with the next tooth. If the platen 3| is thereupon rocked back into the initial position, an advance or spacing occurs to the extent of one line.

44 under the action of a' spring 41.

This movement is readily braked by the web of paper 39 withdrawn from the The drive of the printing mechanism takes place through the medium of the link (Figs. 15-17) connecting a lever 8| with the lever 58. The lever 8| is pivoted on the shaft 4| and drives the supporting lever 35 for the platen 3|. There are also secured to the shaft 4| a lever 42, which is acted upon by a spring 83 connected between the levers 42 and 8|, and a pawl 84, which cooperates with a notch in a bell crank lever 85.

This bell crank lever 85 is pivotally mounted on a stud 91, and is acted upon by a spring 81 engaging the frame of the machine. The second arm of the bell crank lever is furnished with a bevelled edge 88.

Upon depression of the operating lever 52 the bell crank lever 58 is rocked in the manner previously described, so that the link 80 moves the lever 8| upwards and thereby tensions the spring 83. This is possible because the lever 42 is held by the pawl 84 (Fig. 16). At the same time the lower end of the link 88 moves on to the bevelled edge 86 of the bell crank 85 and causes the latter to rock about the stud 91 until the pawl 84 has been released. The then released spring 83 pulls the lever 42 behind it and the platen is actuated by the lever 88 into contact with the types. Upon this movement the line spacing action takes place with the aid of the pawl 43 in the manner described above. The bell crank lever 85 is returned by a spring 81 into the position of rest, in which the supporting levers 35 for the platen 31 are locked in position. This movement is effected by means of a stud 98 on which the spring 83 is fixed.

The fornpof the casing is shown in Figs. 18 to 20. For the purpose of ready replacement of a roll of paper 38 the rear part 88 ofthe casing 36 is designed in the form of a folding cover, for which purpose hinges 89 are provided on both parts of the casing.

The machine rests firmly on three feet 90, 9| and 92, of which the rear one 90 is secured below the printing mechanism to the base plate 94 at the centre thereof, whilst of the two front feet 9| and 92, the foot 92 situated below the operating lever 52 can be moved into the position shown in full lines in Fig. 20, thus providing support directly below the operating lever 52.

For carrying the machine this foot 92 is moved into position below the base plate, and at the same time the operating lever 52 with the head 64 is removed, so that no parts project beyond the machine casing. The foot 92 is situated on an arm 93, which can be rocked about the stud 95 between the stops 96.

Having now particularly described and ascertained the nature of our said invention, and in what manner the same is to be performed, we declare that what we claim is:

l. A ten key calculating machine of the type having an oscillatable platen cooperating with an ordinal group of type carrying members, comprising in combination: a plurality of differentially settable slotted bars respectively connected to said type carrying members, a plurality of setting members movably connected to said slotted bars, coupling members carried by said setting members, spring means connecting said setting members with said slotted bars, a drive bolt common to all said bars and movable in the slots thereof, means for engaging the coupling mem bers of selected setting members with said bolt whereby such setting members actuate said slotted bars through said springs, and means for actuating said bolt.

2. A tenkey calculating machine of the type having an oscillatable platen'cooperating with an ordinal group of type carrying members, comprising in combination: a plurality of differentially settable slotted bars respectively connected to said type carrying members, a plurality of setting members movably connected to said slotted bars, coupling members carried by said setting members, spring means connecting said settingmembers with said slotted bars, a drive bolt common to all said bars and movable in the slots thereof, means for engaging the coupling members of selected setting members with said bolt whereby such setting members actuate said slotted bars through said springs, reciprocatory connecting rod means engaging said bolt at spaced points thereof, a lever fulcrumed, rearwardly of the bolt and having a palm operated head on its forward end, and a link system connecting the rear end of said lever to said connecting rod means.

3. A machine according to claim 2 in which the link system has a transmission ratio such that rocking the palm lever through not over 30 produces a full stroke of said bolt and in which the keys of the machine are arranged in oblique rows adjacent the head of the palm operated lever. whereby said keys and lever 'are operable by one hand.

4. A ten key calculating machine of the type having an oscillatable platen cooperating with an ordinal group of type carrying members, comprising in combination: a plurality of differentially settable slotted bars respectively connected to said type carrying members, a plurality of setting members movably connected to the slotted bars, coupling members carried by said setting members, spring means connecting said setting members with said slotted bars, a drive bolt common to all said bars and movable in the slots thereof, means for engaging the coupling members of selected setting members with said bolt whereby such setting members actuate said slotted bars through said springs, a manually actuable rock lever, connections for driving said bolt from said lever, and means in said connections for coupling the rock lever to the bolt through a portion only of the rocking movement of said lever.

5. A machine according to claim 4 in which the means for coupling the rock lever to the bolt include a pawl on a stationary pivot engaging the bolt when the latter is in position of rest a pawl carried by one of the driving connections and adapted to engage the bolt during its travel, means to trip said pawls to bolt disengaging positions at determined points of travel of said driving connection, and a lost motion joint between said drive connection and the bolt effective while said bolt is held by said stationarily pivoted pawl.

FRANZ J OSEF BERREN'DORF. REINHARD REXIN.

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