US1858626A - jacob - Google Patents

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US1858626A
US1858626A US1858626DA US1858626A US 1858626 A US1858626 A US 1858626A US 1858626D A US1858626D A US 1858626DA US 1858626 A US1858626 A US 1858626A
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setting
lever
wheel
counters
levers
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    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06CDIGITAL COMPUTERS IN WHICH ALL THE COMPUTATION IS EFFECTED MECHANICALLY
    • G06C7/00Input mechanisms
    • G06C7/10Transfer mechanisms, e.g. transfer of a figure from a ten-key keyboard into the pin carriage
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06CDIGITAL COMPUTERS IN WHICH ALL THE COMPUTATION IS EFFECTED MECHANICALLY
    • G06C15/00Computing mechanisms; Actuating devices therefor
    • G06C15/26Devices for transfer between orders, e.g. tens transfer device
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00Machine element or mechanism
    • Y10T74/15Intermittent grip type mechanical movement
    • Y10T74/1526Oscillation or reciprocation to intermittent unidirectional motion

Description

M. JACOB CASH REGISTER May 1:1, 1932.
4 sheets-sheet i Filed Feb. 8. 1924 M. JACOB CASH REGISTER May 17, 1932.
Filed Feb. 8, 1924 Sheets-Sheet 2 May 17,1932. M. JACQB 1,858,626
v cAsH REGISTER Filed Feb. 8, 1924 4 Sheets-Sheet 3 May 17, 1932. M. JACOB Y 1,858,626
I CASH REGISTER Filed Feb. 8, 1924 4 Sheets-Sheet 4 nga.
i Patented May 17,` 193 2v vUNITEDA STATES PATENT OFFICE MAX JACOB, OF ESSEN, GERMANY, ASBIGNOB T0 FRIED. KRUPP AKTIENGESELLSCHAFT,
` 0F ESSEN-ON-THE-BUHB, GEBIANY cass nmis'rnn .application `1ed February 8., 1924, Serial no. 691,484, and in Germany Hatch 1, 1923.
and a plurality of totalizing counters. The` first object of the invention is to improve the means for setting the amounts and for positioning the counters according to the amount set.
The invention further provides an improved!l selecting device for ythe totalizing counters by means of which these counters can be particularlyeasily and simply brought into and out of engagement with the diiierential actuating members.
Furthermore, the invention relates to a return device for the setting levers, this device being so arranged that the setting levers .y amount of two units,
are in locked state duri-ng the idle stroke of the return lever.
With these and incidental objects in view, the invention consists in certain novel features of construction and 4combination of parts the essential elements of which are set forth in appended claims and a preferred form of embodiment of which is hereinafter described with reference to the drawings which accompany and form part of this specification.
On the drawings: y
Fig. 1 is a sectional elevation of the cash register,
F'g. 2 is an elevation of the'return device for the setting levers, partly in section,
Fig. 3 is a front view2 of a part of the cash register,
Fig. 4 a section on line IVLIV of Fig. 1, Fig. 5 is a section on line V-V of Fig. 3, seen from the right,
Fig. 6 is the top view of Fig. 1, partly vin section,
Fig. 7 is a Section on' une vii-vn .or
Fig. 3, seen from the left, l y
Fig. 8 shows parts of the differential lnechanism inoperative position and set to the Fig, 9 shows part-s ofthe differential mechanism in section on line IX--IX of Fig. 6 but in zerovposition,
Fig. 10 is a detail of the differential mechanisrn,
Fig. 11 shows` one of the setting levers.
The dii'erential mechanism the invention is dealing with is of the kind in which the amount set before by means of setting levers is brought, during the operation of the machine, into the totalizing counters which have been brought into engagement with the differential actuating members. With known mechanisms of this character spring-controlled ratchet and pawl devices are made use of for positioning the counters according to the amounts set by the setting levers. In contradistinction thereto this positioning is effected, accordinor to the invention, b the intermediary of a planet Wheel the sha t of which receives from the operating device of the machine a definite rocking motion during the operation of the machine, the actuating member being carried along by the setting lever by the amount which was set -by said lever. During the differential operation the setting lever, the diii'erential actu- -atinof member and they planet Wheel permaoperating mechanism of the machine. The
selection of thecounters is eected, before the beginning' of the operation of the machine, by settin the selecting lever. With known devices o this kind a selecting member which is common toall counters is brought into mesh with stops arranged on the selected counters4 by the pre-setting operation, While the stops of the counters not lselected remain unengaged by the selecting mer `Jer. In contradistinction thereto, according to the invention theselection of the counters is not effected by setting the selecting member, but this latter remains inv its position relative to the stops of the counters and the said selection is brought about by throwing-in special connect-ing members which couple said stops of the selected counters with the selecting member. These stops take part-in the selecting motion of the selecting member taking place during the operation of the machine, While tion of the setting levers.
the stops of. the remaining counters are not Yinfluenced by said selecting motion.
ing teethof said levers, in order to reduce the resistance existing against the return Ino- Wlth known devices of this kind the setting levers are in unlocked state also during the idle stroke of the return lever, so that during this time the setting levers may easily) move out of their position owing to a shock or the like. According to the invention the locking bolts are lowered into the locking teeth of'the setting levers already after the working stroke of the return levers has come to end, and remain therein during the idle stroke of this latter. By this means the danger of the setting le-v ver1 being unintentionally set is dispensed wit On the main shaft 10, see Figs. 1, 3, 6, which is mounted in the case walls 11 of the machine are disposed the setting levers 13 having handles 12, for free rotation. The setting levers can be fixed in every set `position by a spring-actuated locking bolt 15 cooperatinor in the usual manner with a series of the teeth 18 by one pitch-unit. A ditferen tial wheel 2O is further allotted to each setting lever 13, said wheel being freely rotatable on the shaft 10 and the teeth of which show the same pitch circle and pitch as the teeth 19. The movement of the wheels 20 is transferred to the totalizingcounters 25 by racks which are guided by cross bars 21, 22 of the case and have teeth 23. 24, the counters being adapted to be rocked in the direction. of arrow 27, Fig. 1, so as to come into mesh with the teeth 24as'will be hereinafter described in detail. Between every two neighboring wheels 20 there is arranged a carrier 28 which is rigidly fixed to the shaft 10 and has mounted on it, by a pin 29, two planet wheels 30, see 1 andv6, which are in permanent gearvwith the wheels 20. The toothed rim of the planet Wheels 30 showstwo recesses 31 and 32, 'see particularl Fig. 10. Thefrecgss 31 lies in thepath o the single tooth 19 while the-recess 32 is destined to cooperate with the gliding surface 17 of the disk 16. The recesses 31 and 32 are so situated relative to one another that the single tooth 19can pass freely throughl the recess 31, see Figs. 8 and 9, when v therece'ss gliding along` the surface 17.
there is fixed on the s aft 10 a crank arm 34,
Figs. 1 and 6, to which is pivoted a rod 36 by :a pin 35, this rod 36 being guided by a rod 37 which is connected thereto by a pin 38 and is capable of rocking about a shaft 39 mounted in the frame of the machine. The rod 36 shows a curved groove 40 the middle portion 41 of Nwhich has circular shape'and is concentric to the axis of a gear Wheel 42 when the rod 36 assumes its right-hand-lilnit position. A roll 43 mounted on the wheel 42 engages the groove 40. The wheel 42 is mounted on the frame of the machine and is in mesh with a wheel 44 on the -shaft75 to which a hand crank 45 is fixed.
The mechanism hereinbefore described for lsetting the amounts and bringing them into4 the counters works in the following manner:
When the setting levers 13, Fig. 9, assume the zero-position, the recess 32 faces the gliding surface 17 and the'single tooth abuts onJ the tooth 33. vWhen the setting lever 13 is set, by means of the handle 12, to an amoun-t, f. i. the amount marked by 2 in Figs. 1 and 8, and is fixed in this position by the lock 14, 15, the single tooth is distant away from the planet wheel 30 by two units, since the wheel 30 did not take part in the setting motion. During this motion the gliding surface 17 of the disk 16 glides away underneath the recess 32, and since the Wheel 30 is thereby secured against its own rotation, the differential wheel 20 likewise, being permanently in mesh therewith, cannot rotate.
Now, when the hand crank 45 is operated il after the described setting of the lever 13, the roll 43 is moved in the direction yof arrow 46 by means of the gear wheels 44 and 42, the gear wheel 42 and roll 43 acting as a lever of rotation for reciprocating` the connecting rod. During the first period of this motion the roll 43 moves in the portion 41, concentric to its axis of rotation, of the curved groove. The rod 36 is therefore not influenced but this period of motion is used for moving the selected counters into engagement with the rack teeth 24. During the further course of its motion the roll 43 reaches the portion 47 of the curved groove which portion is not concentric and moves the rod 36 to the left, Fig. 1, so that the main shaft 10 andvtherewith all the carriers 28 execute a rocking motion in the direction of arrow 48, Fig. 1. This rocking motion is taken part in by the planet wheels 30 which, however, do not make any rotation themselves as long as the base face of their recesses 32 glides on the surface 17 of the vdisk 16. During this period of motion the tooth 3 3 of the planet Nga wheel 30 therefore carries along with it the differential wheel 20. The motion of the' wheel is transferred by means of the rack teeth 23 and 24 to the counter which, as described, has been brought into engaging position with the rackteeth 24. As soon as the tooth33 strikesl the sin le tooth 19, that means, after a setting of Sie parts according to the number of units set on the setti-ng marks, the single tooth 19 enforces the r0- tation of the planet wheel 30 whichv latter now,engages the teeth 18 of the disk 16. As the toothed rim 18 is at rest, the planet wheel 30 executes a pure rolling motion on it and therewith also on the teeth of the wheel 20 having the same pitch conditions, that is to say, the wheel 20 comes to rest, even upon further rocking motion of the main 'quired for transferring nine units.
shaft 10 in that moment where the planetwheel has reached the single tooth 19. Thus a number of units corresponding to the setw position f the lever 13 has been transferred to the counter.
When the roll 43 assumes the position. indicated by dot and dash lines in Fig. 1, a short standstill of the rod 36 takes place, as then the path of the roll is tangent to the curved groove 40. During' this timethe engaged counters are lifted from the rack 24.
Furthermore, the stroke of the rod 36 is so chbsen that the main shaft 10 will be rocked still by a somewhat larger angle than it is rel Therefore, after having made its longest transferring path the planet Wheel 30 still executes a short rolling motion over the wheel 20 so that the time of rest, of the rack teeth 23, 24, at disposal for throwing-out the counter, is thus still increased.
During the further course of the motion of the roll 43 back to its position of rest, Fig. 1, the rod 36 is brought again to the right and the main shaft 10 is rocked back to its initial position. The planet wheels 30 which take part in this rocking motion, first roll over the two stationary rims 18 and 20, until the tooth 33 reaches the single tooth 19 and, there-- with, the recess 32 reaches the surface 17. Now the tooth 33 which comes to rest in a centrally directed position with respect 'to' the shaft 10, carries with it the wheel A2O into position of rest, this latter thereby being returned by as many units as it had been set before. As it will be seen, the setting lever 13 is now ready for new setting without having to be brought previously into zero-posi- The selecting mechanism for the counters is illustrated. in'Figs. 1, 3, 4, 5, 7
The selecting lever 49 is mounted for free motion on the main vshaft 10 and is held, like the setting lever 13, byA a locking device 14,15. The different positions the selecting lever 49 may assume are indicated on the surface of the case 50 by the mark of the seller,
` Fig. 1.
of the mode of transaction or the like. To each position corresponds a determined selection of counters to be thrown in. A slide v53 is pivoted vto the selecting lever 49 by a in 51 engaging an oblong slot 52 of the ever, and is adapted to shift in upright guiding surfaces of a bracket 54 of the case of the machine. The slide 5,3 has a rectangularly projecting rib 55 showing a number of recesses 56. Rocking levers 58, Figs. 3 and 5, are further mounted on the slide 53 by-pins 57,'and each of these levers carries on its free end a lateral pin 59, Figs. 3 and 4, which projects into a slot 60 of the slide Oppositely to the pins 59 each rocking lever carries a cylindrical lug 61. These lugs 61. form connecting means or fitting lugs which serve for coupling the stops of the counters with the selecting'mechanism.
Three counters 25 are illustrated in Figs. 1, 3 and 7, the gear wheels 63 of which, connected to the numeral drums 62, can be brought into and out of mesh with the rack teeth 24 by means of the selecting device. To `this end the frames 64 of the counters yare swingingly mounted on the brackets 54 by pins 66. e Each frame 64 further carries a tapshaped stop 67 to which4 the selecting device is attached. These taps 67 projectv through recesses 68, Fig. 4, of the bracket 54 and abut on the rim 55 whereby the counters normally are held locked in their thrown-out position, The common selecting device for the counters is arranged at the side, turned away from the counters, of the bracket 54. This device has a claw-shaped angle lever 69, Fig. v
7, for each counter, which lever is adapted to rock about a. pin 66 mounted in the frame of the respective counter. The angle levers 69 are connected by bolts 7 Olto a link 71, a rod 72 being pivoted to the 4uppermost bolt 70. The rod 72, see Fig. 1, has mounted on it a roll 73 which engages a curved groove 74 cut into a disk 76. The latter is fixed on the crank shaft 75. Upon each revolution of the shaft 75 taking place on the operation of the machine, the angle levers 69 are caused to execute a to-and-fro motion by means of the thrust crank gear 74, 73, 72. The gap of the claw formed by each angle lever is limited by a face .77 of the one leg and a laterally bent lug 78 of the other leg, 'see particularly Fig.
When the selecting device is in position of rest the face 77 lies in the plane of the surface, turned towards the` counters, of the rib 55. The laterally bent lug 78 projects into the path of the lug 6l of the respective rocking lever 58 .when this lug lies in the level of the gap of the claw, see particularly Fig. 4. Thetslide 53 is secured on the guiding faces of the bracket 54 by a cover sheet 79. This cover is fixed on the bra'cket by screws 80 and has a longitudinal slot 81,`Fig. 1, having, in its turn, slot-shaped enlargements 82.
These longitudinal slots 81 are engaged by the pins 59 of the rocking levers. As w1ll be seen from Figs. 7 and 4, the gap of the levers 69 is of such a width that it will be entirely filled by the respective tap 67 and by the fitting lug 61, if the latter is introduced therein. Upon i assume, that number of counters which' corresponds to the set position of said lever is coupled with the respective angle lever 69 by the respective fitting lugs. In the embodiment illustrated in each position of the selecting lever one counter only is coupled, but by another number and arrangement of the fitting lugs it may be attained that with certain positions of the selecting lever several counters are coupled simultaneously. Thus the mode of disposing said fitting lugs on the selecting device offers a simple means for performin a large number of selections.
The escribed selecting device works in the following manner: I.
According to the setting of the selecting lever 49 the slide 53 with its rib 55, and the fitting lugs 61 'connected thereto are brought into diferent levels. In the embodiment shown the upper position of the lever 49 corresponds -tothe upper counter, the middle /position to the middle and the lower position to the lower counter.
.With the shown position of the selectingV lever the fitting lug 61 of( the upper rocking lever 58 lies between the lateral lug 78 ofthe upper angle lever 69 and the tap 67 of the upper counter. The pin 59 of the upper rocking lever faces the upper enlargement 82 of the longitudinal slot 81 of the cover sheet 79. This pin is thus capable of bein moved to the left, Fig. 7, whilethe pins 59 o the two lower rocking levers 58 are ided within the slot 81, thus preventing t ese two rocking levers from rocking.D The ta s 67 of the two Y lower counters abut against t e rib of the per counter slide 58 and lock these countersl in their thrown-out plosition. The ta 67- of the upowever, is free or amotion towards the left, Fig. 7, as -it lies in front of the upper recess 56 ofthe rib 55 and abuts merely onfthe face 77 of the upper rocking lever 69. During the first section of 'the rotation of the operatin shaft the rollr 7 3 and therewith the rod 2 and link`71 areV ressed downwards so that all the angle evers 69 will execute a rocking motion in clockwise direc-A spective angle lever 69, as the gap of its claw is completely filled by the tap 67 of this counter and the` respective fitting lug 61, as above described, see also the dot and dash line position of the parts in Figs. 5 and 7.
At the end of this movement the gear wheels 68 of the upper counterengage the teeth 24 and remain in engaging position as long asthe roll 73 moves within the part of the groove which is concentric to the shaft 75. During this time the setting rotation ofthe numeral drums of the counter takes place in the describedy manner. Upon the further rotation of the grooved disk 76 an upward motion is imparted to the roll 73 and thereby to the rods`7 2 and 71. When this takes place the angle levers swing back into their initial position and the upper counter which takes part in this motion owing to its being coupled thereto by the parts 77, 67, 61, 78, is thrown out of the teeth 24 and brought back into its position of rest. When the rotary movement of the shaft A75 has come to end, all the parts assume their initial position again. When the selecting lever 49 is now brought into another position, i. the middle position, the above-described movements will be repeated upon operation) of the machine, but the middle counter is now brought into working posi'- tion instead of the upper one.
The device for returning the set amount setting levers 13 and the selecting lever 49 into position of rest comprises the elements hereinafter described.
A handle lever 85, see Figs. 2 and 6, is mounted on a fixed bolt 84 of the case and is held in its position of rest by a spring 86. At its inner end this lever 85 is provided with a toothed arc 87 which is in .mesh with a toothed segment 88. This Segment is freely rotatable on the shaft 10 and has rigidly fixed on it areleasing member 89. This member showis-a recess 90 and a gliding surface 93 which .is limited by two radial `abutting faces 91 92. An arm 95, freely mounted 0n they shaft 10 has a lateral lug 94 which 4projects Vinto the recess 90 and the free end of which isconnected to a cross .bar 96. This t bar extends underneath the setting levers 13 and the selecting lever 49 and is guided by an arm 95 fixed on its left-hand end and having the shape of arm 95.
The above-mentioned spring-actuated lockingbolts which cooperate with the locking teeth 14 are shiftablv mounted in a cross bar 97. Each-of these locking bolts 15 is provided at its lower end with a'notch 98. A shaft 10Q is likewise mounted in the cross bar 97 and shows a longitudinal recess 99 the edge of which projects into said notches 98 -of the bolts 15 and cooperatestherewith. On
its right-hand'end the shaft 100 carries a double-armed pawl 101, Fig. 1,- the arm 102 of which projects into the path of the releasing member 89 and the other arm of which has an edge 103 acted upon by a flat spring 104 fixed on the cross bar 97.
When in position of rest the described parts of; the return device take the position shown in Fig. 2. The spring 86 holds the handle lever in the upper limit position while the arms 95, 95 together with the bar 96 are held in their lower limit position which is determined by a stop 105 fixed on the case, Fig. 1. The lateral lug 94 abuts against ,the ri ght-handv Wall'of the recess 90. The arm 102 of the pawl 101 takes the position of Figz 1.
When the handle lever 85 is swung downwards in order to return the setting levers 13 into position of rest, the abutting face 91 hits the arm 102 of the pawl 101 and swings the latter together with the shaft 100 in anticlockwise direction. Consequently all the locking bolts 15 are lifted out of the teeth 14 by the edge 99 of the shaft 100. While the surface 93 is gliding along the rearwardly swung arm 102 and holds thus the bolts 15 in lifted position, the left-hand wall ofthe recess hits the lug 94 thus causing the arm to swing upwards and the bar 96 to bring the setting levers 13 back into position of rest. As soon as the releasing member 89 has reached its rear end position the bolts 15 again engage the teeth 14 owing to the arm 102v swingingpast the abutting face 92 and taking a middle position, see Fig. 1. Upon releasing the handle lever 85 it is brought, together with the releasing member 89, back into initial position by the spring 86, while the setting levers 13 remaiin in locked state and the surface 93 glidespast the arm 102, now forwardly directed, ofthe pawl 101. As soon as the releasing member 89 has reached its initial position, the arm 102 snaps back under the action of the spring 104 into its middle position. All parts of the return device thus take their position of rest again.
While the form of mechanism herein shown and described is admirably adapted to fulfil the objects primarily stated, it is to be understood that it is not intended to confine the invention'to 'the one fo'rm of embodiment herein disclosed, for it is susceptible of embodiment in various forms all coming within the scope of the claims which follow.
I claim:
1. A machine ofthe kind described comprising a number wheel, an actuating member therefore, an amount setting member, means for differentially displacing said actuating member according to the amount set by said setting member subsequent to the'set: ting thereof, said displacing means including a positively actuated connecting and interlocking member between said setting member and said actuating member.
2. A machine of the kind described comprising a number wheel, an actuating member therefor, an aniount setting member, means for differentially displacing said actuating member according to the amount set by said setting member subsequent to the setting thereof, said displacing means con- A sisting of a connecting and interlocking member between said setting member .and said actuating member, and means for bodily said actuating" member comprising a gear wheel meshing with the teeth of said actuat-- ing member, means for moving said gear wheel bodily7 in a direction parallel to the pitch line of the teeth of said actuating member for a constant distance at each operation of the machine, and manipulative means for locking said gear Wheel against rotation on its own axis for a portion of its travel dependent upon the value to be carried to said number wheel.
4. In a machine of the class described, a number wheel, a'toothed actuating member therefor, and means for differentially moving said actuating member comprising a gear wheel meshing with the teeth of said actuating member, means for moving said gear wheel bodily in a direction parallel to the pitch line of the teeth of said actuating member for a constant distance at each operation of the machine, manipulative means for locking said gear wheel against rotation on its own axis for a portion of its travel dependent upon the value to be carried to said number wheel, and means for constraining said gear wheel to rotate during the remainder of its travel through an angle bearing a relation to its bodily movement such as to hold said actuatingmember stationary.
5. A machine of the kind described com prising a number wheel, a differential actut' ating member therefor, a setting member, means for positively positioning said actuating member according to the amount set by said setting member, saidV positioning means comprising a planet wheel connecting j the planet wheel during its positioning movement compises a smooth surface on the settin mem r parallel to the direction of the bodgily lmovement `of said planet wheel, said planet wheel having a recessed portion adapted to slide over said smooth surface to an eX- tent determined by the position of thesetting lever.
7. A machine according to claim 5, in which the means for preventing rotation of the planet wheel during its positioning movement com rises a smooth surface on the settin mem er parallel to the direction of the bo ily movement of said planet Wheel, said planet Wheel having a recessed portion adapted to slide over said smooth surface to arr-extent determined by theY position of the setting lever, and means for initiating a rotary motion of said planet Wheel about its own axis,
comprising a single tooth .on the setting member adapted to engage. said wheel when the latter leaves said smooth surface.
S. A machine accordingto claim 5, in which the means for preventing rotation of the planet Wheel during its positioningA movement comprises a smooth surface on the setting member parallel to the direction of the bodily movement of said planet wheel, said Wheel having a recessed portion adapted to slide over said smooth surface to an extent determined by the .position of the setting lever, and meansA for initiating a rotary motion ber, means of said planet Wheel about its own axis, comprising a single tooth on the setting member adapted to engage said wheel when the latter y' of said connecting member during its .dis-
placement, and means for adjusting said setting member to position the end of said locking surface in accordance with the value to be transmitted to said numeral wheel. Y
10.` In a machine of the kind described, a member wheel, a toothed actuating member therefor, a setting member, a rotatable toothed connecting member cooperating with said actuatin member and said setting memf lber, means or displacing said connecting member a constantY distance along said setting member at each operation of themachine, said setting member having two addisplacement, the other being toothed for rcausing rotation of said connecting member, the teeththereof being of the same pitch as the teeth of said actuating member.
11. A machine according to claim 10 in combination with a single tooth placed at the juncture of said two portions of the setting member for`initiating rotation of said connecting member. l
12. A machine of the kind describedvcom'- prising a shaft, a number wheel, a differential actuating membe therefor comprising a toothed wheel revolubly mounted on said shaft, a setting member revolubly mounted on said shaft, and means for positively positioning said actuating member according to the amount set by said setting member com rising a radial arm rigid with said? sha t, a planet wheel rotatably mounted on said arm and engaging said setting member and said differential actuating member, and means for rocking said shaft and thereby said planet wheel, said setting member having on part of its periphery a concentric locking surface to prevent rotation of said planet wheel about its own' axis during the positioning period of its rocking movement.
13. Ina machineof the kind described, a setting member, means for locking said setting member comprising a series of teeth and a spring-pressed bolt cooperating therewith, a return member for said setting member, a shaft having a longitudinal shoulder, said bolt having a recess in which said shoulder is engaged, a pawl connected to said bolt, and means connected with said return lever for turning said pawl to cause said shaft to withdraw said bolt from said series of teeth during a zeroizing movement of said return lever.
The fore oing s ecication signed at Essen, Germany, t is llt day of January, 1924.
' MAX JACOB.
jacent portions, one being adapted to prevent rotation of said connecting member during
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2705107A (en) * 1955-03-29 T gadbois

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2705107A (en) * 1955-03-29 T gadbois

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