US1464778A - rudin - Google Patents

Description

Aug; 14, 1923. I 1,464,778

- K. v. RUDIN ZEROIZING MEANS FOR THE CURVE DISKS=OF CALCULATING-MACHINES Filed April 10 1919 2 Sheets-Sheet 1 Aug. 14, 1923. 1,464,778

K. V. RUDIN ZEROIZING MEANS FOR THE CURVE DISKS OF CALCULATING MACHINES Filed April 10-, 1919 2 Sheets-Sheet 2 Patented Aug. 14, 1923 i UNITEIIDFYSTATES 1 1,464,718 PATENT OFFICE;

KARL V IK'ITOR RUDI N, 0F STOCKHOLM, SWEDEN.

' zERorzI 1 'Ie MnAivs non THE cimvn wears on CALCULATING ivrncrn vns.

Application filed April- 10,

To all whom/it may concern: p 1

Be it known that 1, KARL VIK'ron RUDIN, correspondent, subject of the King of Sweden, residing at Stockholm, Sweden, have invented certain new and useful Improvements in Zeroizing Means for the Curve Disks of Calculating Machines (for which I have filed application for patent in Sweden, No.'1151,-1918, filed- March 26', 1918), of which the following is aspecification.

The present invention relates to certain improvements in zeroizing means for the curve-disks of calculating machines ofxthat kind wherein a setting mechanism is provided with settingwheels and curve-disks, and in which the setting wheels are provided with avariable number of teeth adapted to be actuated by the curve-disks in setting the mechanism for a certain value; 1

An object of the invention is to provide means independent of the above-named means for locking the curve-disks, when set, so as to prevent them from being thrown out of position during the calculating operation, that is to say,during the rotation of the setother.

Another object is to provide a zeroizing other setting of the same, and consequently,

7 another. calculating operation, is made im completech v 7 possible, until thezeroizing operation is" A further object is to construct the 'mecha nism in such a way'that the rotation ofthe setting mechanism and consequently, another calculating operation, whose result would vbe incorrect, is made impossible, if the setting ofthe curve-disks for another calculation be effected or the zeroizing mechanism be-actuated prematurely. 9

A further object of this invention is to providea means easily attachable to a calside of the 'lnachinein such a way-that the shaft, when actuated by the, said member, is

, rotated in the opposite direction, thus" resetting all the curve disks'in Zero position;

claimed. ting mechanism in one dlllBCtlOIl' or the 1919. Serial No. 289,100.

An essential feature of my invention and an important object thereof consists in providing means consisting of the connec tion between theshaft passing through the setting mechanism of the machine and the curve-disks in the form of pins or studs, ex-

tending from the shaft, said pins or studs being arranged in the path of pins or studs i fully claimed.

we With these and other objects in view the invention consists in the construction, combination, details and arrangement of parts hereinafter more fully described and In the drawings Figure 1' is a longitudinal section.

Figure 2 is a cross section looking from the'left of Figure 1 of'a'calcula'ting' machine provided with my invention.

Figure 3 is a modified form.

Figure 4 is a detail view. 7

Figure 5 shows from the right in partial [section the zeroizingorgan proper according 'to an embodiment of the invention.

Figures'G and 7 show from theside and '7 in front view in partial section the zeroizing organ'or unit in accordance with another or modified form of my invention. 7

Figures 8 and 9 show detail views of the mechanism for step-by-step setting'of ,the.

curve-disks into two different positions.

Referring to the drawings," the setting mechanism ofthe machine consists, as usual,

of setting wheels 1 with curve-disks 2, the; culating machine havinga shaft passing" through" the setting mechanism ofQthe machine and so comiected with the curvedisks shaft for setting wheels being indicated by thenumeral14. In the preferred form the connection between the shaft passing throughthe setting mechanism of thev machine and the curve-disksconsists of pins or studs 49 ,shown to advantage in Figures 2. and 3, extending from, the shaft 14 and lying in the way or path ofstuds 50- arranged: on the curve disks. The shaft 14 is of my invention in two different embodiments.

put into the bearing member 5a of the settinp; wheels 1 and the pins or studs 19 are inserted into perforations therein and may in any convenient manner be attached to the shaft but preferably as shown in Figures 2 and 3, the said pins or studs may be locked by a key 53 sliding in a keyway 52 in the shaft, the pins being inserted into the openings or perforations 51 in the shaft 1 1, which. openings or perforations 51 pass trans-- versely of the shaft. In such a way the pins are reliably ecured to the shaft 1&.

A sleeve Set surrounds the shaft 1 1 and is provided with a transverse slit opposite each pin or stud, of suitable length, preferably onethird or one-fourth the length of the periphery. The surfaces 56 of the recess or slot 55 formed in said way, form in connection with the surface 57 of the hub 58 on each setting wheel. the same being' also provided. with slits, a limiting surface or surfaces for the movement; of the pins or studs.

A pin is suitably, in the same manner as the pins or studs 49. attached to the shaft 14 and is actuated by the zeroizing means.

This latter is illustrated in the drawings According to the first embodiment shown in Figures 1 to 5, the organ or other member consists of a double armed lever, the one arm 60 of which is looselymounted upon the sleeve 54., journaled on the shaft 1.4;, and the other arm 61 of which is pivotal in relation to the former arm 60 and provided vith a shoulder or the like 62, adapted to mesh with the pin 59 or any other part extending from. the shaft 1 1, when the arm 61 is in its operative position. The arm 61 is pivotally arranged about the shaft (53 and is actuated by. a spring (34twhich normally holds the arm in resting position. In this position the arm permits the free passage of the pin 59 during the calculating.

The arm 61 is provided. with a handle 65 in order to make it possible to manipulate the sai'ne. In manipulating the arm 61, viz, pressing the handle 65 upwards, the shoulder (32 is turned downwards so as to mesh with the pin 59 (Fig. 5). In further turning the arm 61 together with the arm 60 clockwise the shaft 14 is likewise, by means of the pin 59, turned clockwise and the curve discs are reset to zero.

In order to limit the extent of movement of the arm 61 in relation to the arm 60 one of the arms, for instance, preferably the arm 61, is provided with a pin or stud 66, entering into andrunning in a recess 67 of the other arm, for instance 60 when the first named arm is manually moved against the resistance of the spring.

It isevidenh'that the parts limiting the movement of the arm'61 may also be arranged-in another way. The recess 67 may for instance consistof a slot or. the like, and.

the calculating machine.

the pin 66 of a shoulder or the like, or an other surface being able to push against tl e surface of the other arm.

The movement of the arm 60 or rather of the zeroizing member as a whole, is limited by the medium of the support 68, against which the arm 60 is caused to push. The zzeroizing member as a whole is actuated by a spring 69 tending' to more the organ back into its resting position.

In a modified form shown in Figs. 6 and 7, there is a difference from that already described in that the different parts of the organ are arranged as follows: The shoulder 62 is replaced by a pin or stud 62. Further, the spring 64 is here so arranged that it is inserted in arecess 70 of the arm 60, whereby the one end of the spring rests against the bottom of the recess, while the other end of the spring rests against a pin 7]. arranged in the recess and pressing against the arm 61 and holding the same in its resting position, that is to say, in such a way that the pin 62' is out of the way of the pin 59. The movement of the arm 61 in relation to the arm 60 is thus limited so that when the arm 61. is in its extreme position its surface 72, abuts the opposite S111- face of the arm 60, shown better in Fig. 6. in the extreme position shown in Fig. 6, the surface 73 of the arm 61 abuts the opposite surface of the arm 60.

The zeroizing means may also consist of a knurled knob G1 handle or the like pl: 1 red outside the machine and attached directly to the shaft as illustrated in Fig. 3. In such case the shaft 14 is rotatable directly and all intermediate means are superfluous.

More particularly describing this structure the known arrangementis constructed in such a way that according to l ig. 1 the member 2 is provided with teeth 76 in which teeth apawl is yieldingly held by a spring 77, as better shown in Figure 2. Normally this pawl cannot be moved from engagement with the teeth because of a block 8-): in its path, in the form of a slotted shaft which shaft is movable by a lever 36 into the two positions, one shown in Fig. 8, and the other shown in Fig. 9. The lever 36 is provided with a lug 86 seating into a recess &2 in the casing, thereby permitting the turning of the member 2 only at a time when the said mechanism is in the position shown in Fig. 9, that is to say when the lug 86 is in the recess 12. The outward movement of the lever 36 into the recess 12 causes the said lever 36 to press against a plunger or pin 4,0 which is yieldingly held outward by a spring a0" and which spring is normally .pushed inward by a spring 40 pushing a plunger 40 mounted upon a crank 40 for actuating Thus when the plunger 40* is in a predetermined position of the crank 40 pushing against the plunger organ that the curve disks during the proper zeroizing are released "from the pawls'75, said pawls, one for each curve disk, are arranged upon a shaft 74, shown in Figs. 2, 5 and 7, passing through the setting mechanism, whereby said pawls preferably elastically engage into the toothed ring or the released and permit like 76 for each curve disk shown in Figs. 2, 8 and 9.

The shaft 74: for the pawls 75 has at one end an arm 78 provided with a pinor stud 79, shown in Figs. 6 and 7 by means of which the shaft 74; is actuated by the zero izing organ. the pin or stud 7 9 may during the zeroizing operation slide over a curved surface or the like .80 on the zeroizing organ whereby the arm 78 will. be moved out to such position, as to allow: the engagement of the pawls 75 with the curve-disks. Hence the moving back of the curve-disks into the zero posi tion is facilitated, and a step-bystep setting of the curve-disks made impossible; should the new calculation be performed before completing the zeroizing operation.

During the whole zeroizing operation the shaft 84 has the normal position shown in Fig. 9 inwhich it allows the free movement of the. pawls 7 5. After having performed a new setting operation and a newturning of the setting mechanism is tobe performed the indentnre 86 is pressed out of the recess l2 during the rotation of the crank, which results in a displacing of the shaft 84 to the left'side from the position shown in Fig. 8. In this position the pawls '75 cannot be rotated. and on accountof this the curve-disks cannot be'moved out of their set positions during the rotation of the setting mechanism.- When moving the setting mechanism back into its initialposition the notch or indentiire 86 is again. moved into its reccss by means of the crank and the bar 40 actuated by the se .i The pawls are thus a new setting of the curve-disks.

It is to be'noted that the setting mecha.

nism or the crank cannotbe rotated during the zeroizing operation. Thisisattained by the pawls 75 being during this operation locked in their outermost position in which they engage into the recesses 85 ofthe shaft 84:, thus preventing the latter from being displaced to the left. Thus the notch 86 cannot be moved out of the recess 42, and

This is attained inasmuch as the setting mechanism or the crank cannot be rotated.

What I claim is 1..In a calculating machine, in conibination with curved disks and setting wheels,

zeroizing means mounted for manual movement, means to return the zeroizing means to normal position, pawls to engage teeth of the curve disks, a shaft on which said pawls are pivotally mounted said shaft and pawls having means to pe it limited pivotal movement ofsaid pawls on said shaft,

and said shaft being operated by the zeroixing means to disengage the pawls from the curvec. dlSi teeth during Zeioizing.

2. In a calculating machine of the class described, in combination with curved disks and setting wheels, pawls to engage teeth of the curved disksand permit step i y-step setting thereof, and zeroizing means for the curved disks, said zeroizing means also serving to disengage the pawls from the curved disk teeth during zeroizing.

and setting wheels, pawls to engageteeth of the curved disks and permit step-by-step settin thereof, zeroizing means for the curved disks, said zeroizing means also serviiigto. disengage the pawls from the curved diskteeth during zeroizing, and means to prevent or permit operation of the pawls at will.

i. In a calculating machine, a calculating rotor. an arcuate portion of said rotor pro- S. In calculatingv machine of the class described, in combination with curved disks through said rotors eccentric said pivotal.

mount, a pawl. for engagement withisaid discal'inembers, saidpin in the path of said pawl n its movement from disengagement with said. members, means for lon idinal 1y sliding said pin, and recesses in said pin to permit the escape of said pawl when said pin is in a predetermined longitudinal position. T

6. Means for Zeroizing the curve-disks after completed calculating operation in calc-ulating machines having setting wheels provided 'with a' variable number 'of teeth, said means consisting of a shaft passing through the setting mechanism of the machine, characterized by the connection between the curve-disks and the shaft consisting of pins or studs extending from the shaft, said pins or studs being brought in the path of stops upon the curve-disks in such way that the curve-disks during their setting movement catch the shaft while the latter during the Zcroizing operation is by means of the zeroizing member caused to rotate in the opposite direction and during this movement by means of the pins or studs and the stops move all the curvedisks back intotheir zero position.

7. In a device according to claim 6, the arrangement that the shaft passing through the setting mechanism of the machine consists of a shaft put into the usual sleeve or hearing member 5% for the setting wheels.

8 In a :aeroizing'device according-to claim 5 and e arrangement that the pins or studs 4L9 er-ztendinp; from the shaft pass through the hub of the setting wheel I or other sleeves or mounted upon the shaft, said sleeves or 11 as being provided to a certain length of their periphery, suitably or of the same, with transverse slots whereby the surfaces of the slots serve to limit the movement of the pins or studs,

9. In a zeroizing mechanism according; to claim 7, the arrangement that the pins or studs d9 are put into transversal openings 51 of the shaft i l and provided with grooves or recesses running in the longitudinal direction of the shaft, said grooves or recesses corresponding with a lzey .Ifl( 0\' ar ranged. in the shaft a locking hrr or such like/ 53 being put into said hey groove and {IIOOVGS or recesses in order to securely lock the pins or studs.

10. In the zeroizing; mechanism according to claim 7" the arrangement that the shaft, for instance the shaft let, passing through the setting; mechanism of the machine is prorided with a. pin 59 preferably attached in the same way as the pins or studs 49, said pin being directly actuated by the zeroizing organ.

1],. In a zeroizinp; mechanism according to claim 7, the arrangement that the zeroizing organ consists of a double armed angle lever, the one arm 60 of which loosely mounted upon a sle ve 5st surrounding the shaft, say let passing; through the setting mechanism of the machine, and the other arm (31 of which is pivotable in relation to the former and provided with a shoulder, pin or such like (32 adapted to be brought into engagement with the pin 59 or any other part extending from the shaft in the operative position of the arm.

12. In a zeroizing organ as claimed in claim 11, the arrangement that the arm 61 of the organ, adapted to actuate the pin 59 is actuated by a spring 64; in such way that the arm normally is retained in its resting position in which it allows the free movement of the said pin during the countin 13. In a zeroizing organ as claimed in claim 11, the arrangement that the one arm of the organ is provided with a shoulder or surface adapted to, by the rotation of the other arm in relation to the former, stop the former in a certain end position.

14:. In a zeroizing organ according to claim 11, the arrangement that the organ a whole actuated by a spring moving the same back into its initial position.

15. An arrangement for setting the curve disks step-by-step and comprisine pawls to ene'aeje internal teeth of the curve-disks, a pivotal a: for aid pa'u'ls passing;- through the setting mechanisnn springs to hold said pawls normally in engaged position, a shaft pr vided with an arm, and remixing means to actuate said arm to bring the pawls out of mesh with the curve-disks during the szeroizing and thereby to facilitate their movement back into their zero position and to make their step-by-step setting impossible.

16. Ar embodiment of the arrangement according: to claim l5, including an arm 78 provided with a pin or stud 79 adapted to ii lo alone curved surface or such like 80 1 aceroizinn; means, said zcroizing means also having; means whereby the arm 78 with 74; is pressed out of its position meroizinc; is complete allowing the eng merit between the pawls 75 and the curve-disks.

17. In a calculating! machine, in combination with curved disks and setting; wheels, zeroizinn' means mounted for manual move ment. means to return the zeroiving means to normal position. pawls to engage teeth of the curve disks, a shaft on which said pawls are pivotally mounted said shafthaving an arm actuated by the zeroizine means and also being provided with a pin for each of the nawls, and each pawl havinga recessto receive said pin to enable the pawl to be turned independently of the shaft during its engagement with the curved disks and to be caught by the shaft by means of the recess and pin during the rotation of the shaft, by the operation of the zeroiainp; means upon the said arms.

In testimony whereof I affix my signature in presence of two witnesses.

KARL VIKTOR RUDIN.

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