US1850645A - Counting mechanism - Google Patents

Description

March 22, 1932.

v. wAlTKus COUNTING MECHANISM Original Filed July 21, 1927 4 Sheets-Sheet March 22, 1932. v. wArrKus COUNTING MECHANISM Original Filed July 21, 1927 4 Sheets-Sheet 2 aww'o wtoz Sammy/1111111111.

March 22, 1932. v. WAITKUS coumne macmmsm Original Filed July 21, 1

927 .4 shegacs sheec 3 Y 14 avwentoz VQ Mm March 22, 1932.

v. wArrKus 1,850,645

CQUNTING MECHANISM Original Filed July 21. 1927 4 Sheets-Sheet 4 vmcmcr wei'rkus; or BALTIMOR MARY AND; ASSIGNOR, jBY ASSIGNMENTS;

. ro ceo'wu coax s -SEA 'comreux me,

NEVfI YORK f Original application filedluly 21, 1927, Se ria1 no; 207,371... Divided andthi sappli catio u fileaiwovembere,

1828. Serial This inventionrelates to a counting mechanism -ai1d.. more particularly to a counting mechanismin which, the articles counted may. be delivered in lots containing predetermined amounts.

' \Vhilethe invent onfis applicableto evariousarticl'es', it is herexillustrated in connection with bottle caps oof the well-known crown cork type. Consequently,'the articles ito be: counted are; for convenience of description, referred to herein as crowns. In) packaging crowns, it' -has heretoforebeen commonpractice to count a certain desired quantity. into a receptacle by hand or other- ;wise and then'place this receptacle :on one,

"side of a balancing scale; Successive .re-

cepta cles to be filled with like quantities are thenplacedonlthe otherside of the scale and filled with crowns until a balance is effected,

whereupon they are considered to contain;

the desired quantity. This methodis inaccurate-and unsatisfactory and results. in loss of time and labor;

Itis'an object of ithecpresent invention to provide an apparatus for accurately and automatically counting: articles such"; as crowns.v I i 7 1 i It is a further object of the invention to provide such an apparatus that arranges the crowns,;. for counting; from an 1nd1scr1m1 natemass. I

It i still furtherobjectofthe intention;

to provide, counting mechanism such that thesuccessiye receptacles may be filled with f predetermined, numbers ofrcrjowns without power pulley 9 4 a a s I Thereis provided a channel. of 'singlerow 1 capacity, into: and around wh-ichjthe crowns aremoved due to the rotationzoi spreader stopping the operation of theapparatus.

Withthesejgeneral objects; and others,:in

view the invention consists in the features,

v combinations, details of construction, and

I out.

ing mechanism constructed in accordance arrangements of parts which willv first be described in connection with the accompanying,

drawings andthen more particularly pointed with the inyentionj; V v 7 p A FigureVQ. isauenlarged detail iew, partly coumrme mncnemsm 1 f and in section ;v

'Figure 3 is a sectional- View taken onthe' cbrolren line 3 3 ofFig..2;

Figure 4- isa top planyiew e (reduced) vFigure 5 is afragmentaryyiew partly in front elevation and partly a in vertical @SBC-fl tion;

in front elevation and with parts cut away or New YORK; tax; A: conronarion' or" Figure 6 a detail yiew showing part of Fig.5 in horizontal section; p

Figure? is a viewin side elevation with parts'in; vertical section;

Figure 8 is a detail bottom partsgshown in Figso and 7; Figure v9 isa fragmentary: with parts in secticimof part of Fig.3;-

p pl n tk Figure 10 isa detail View-of parts-of'li'ig 2; and

Figure 11' part of Fig. 7. v

Referring. to the drawings,-thereis: provided means torrarranging an indiscriminate mass of crowns in: a singlerow fiatwi se, and this may conveniently be accomplished by the use t of. centriiugal tor-ice v Although capable of;

variousconstructions; in that here illustrated as an example, mounted on'a base 1 is an ar-- ranging hopper -2-having atop open ng 311' its cover plate 4. Crowns to be counted are dumpedindiscriminately into the hopper through thistop opening and fall! onto a rap-' idlyerotating horizontals plate or spreader 11.

Thisspreader may be rotated inany suitable manner. As shown, itis mounted on afshaft 6 journalled in a lbeari'ng and driveniby a plate 11. To this end, as. here shown, con-c centric with the outer wall-1 of hopper 2;and just above the plate, is a rib 12, spaced from wall, a channel'5 in which crowns can be accommodated only inasi ngle row. The top; of the channel isl for med by a cover plate, 4-

on the hopper, and the rotating plate itselfforms the bottom of the channeh, Plate-I1 and cover plate dare spaced a distance slightis an enlarged detail yie'w of a ly greater than the thickness, i. e. hei ht, of

a crown so that crowns can enter the c iannel only when flat and singly. That'is, entrance of superposed crowns is prevented.

The rib 12 extends only part way around the hopper so as to leave a mouth (Fig. 4) for the reception of the crowns. As the plate 11 rotates, the crowns are spread or thrown vided means for carrying the arranged crowns upwardly from channel and presenting them singly to the counter. In the embodiment hereillustrated as an example, contained ina housing 14, secured by screws 15 to hopper 2, adjacent deflector '13, is avertical wheel 16 rotatable in a plane perpendicular to and cutting theflplane of the platell. Wheel 16 is rotated, as here shown, from shaft 6 by a suitable'gear train 8, 18, 19 and 20,"shaft 21, beveled gears 22, 23, and shaft 24 on which wheel 16 is mounted. The speed at which wheel 16 rotates may be varied to bear any desired ratio to the speed at which crowns are'deposited in the hopper by changing the gear ratios.

Extending from the bottom to the top of wheel 16 is an ar'cuate channel 16 formed by the edge of wheel 16 and the peripheral and side walls of housing 14. This channel is dimensionedto receive crowns fiatwise only and in a single row. At the bottom, channel 16" communicates with channel'5 (Figs. 1 and 4), at the point where deflector stop 13 terminatesthe latter, whereby crowns can pass directly from one channel to the other.

To transferthe crowns and carry them upwardly around channel 16, the wheel 16, in the present embodiment, carries a number of radial, flexible sweeper rods 26 having their ends extending into and across channel 16. These rods are set into slots in the face of the wheel by pins 27 Slots 25 are considerably wider than rods 26 and the c latter are held away from the-trailing walls of their slots by studs28. With the construction described, the rods can give and flex sufiiciently, in case of undue resistance,

to grass around a crown, whereby jamming an I crushing are avoided.

As wheel '16 rotates, the ends of rods 26 wipe the crowns, at the end of channel 5, from plat-e11,into channel 16 and sweep them upwardly around the latter to the top of the housing. 7

Additional means is provided for pre-' venting crushing of the crowns adjacent the point where their direction of movement is changed. To this end, as here shown as an example, there isattached to the crown-approach side of housing 14, a feather spring 29 having on its inner side a rib 30. This rib 30 prevents'the skirt of the crown from coming into contactwith the feather spring 29. If a crown shouldtend to stick while being moved, it would be forced over toward the feather spring which would give way, permitting rod 26-to pass around the crown more easily. Y

While the counting means may vary, structures embodying the invention to the best advantage will include an element given a predetermined actuation or displacement by each crown as it passes a given point in its path around channel 16. In the embodiment here illustrated as an example, adjacent the top of housing 14 is a counter wheel in the form of a scalloped wheel 31 having a predetermined number of equally spaced pockets 33 (Fig. 6) of a size to embrace a crown. The wheel 31 lies in a plane substantially perpendicular to the top of wheel 16 and projects into channel 16 through a slot 32 (Fig. 7), to such an extent that acrown carried up the channel moves into the embrace of a'pocket 33 and can pass on only by displacing or actuating wheel 31. Consequently, for every crown passing the counting point, counter wheel 31 is given an angular movement suflicient to advance the counter wheel the distance of one pocket. To prevent. overthrow of the counter wheel and limit its angular movement to this measured step, stop means is provided. Although capable of various constructions, in that here shown as an example, wheel 31 is mounted on a spindle 34 'journaled in a bracket 35. Also mounted on this spindle is a stopping or control disk 36 having a series of notches ordepressions 36 equal'in number to the pockets 33 of the counting wheel. Riding on the periphery of disk 36 is a roller 39 mounted in the forked end of a plunger 38 and adapted to fit the notches 36 Plunger 38 is slidable in a cylindrical casing 37 and is urged forward by a spring 40 backedby an adjust ing screw plug 41 in the rear of casing '37.

The force of a crown tending to rotate counting wheel 31 overcomes the force of spring 40 and plunger 38 is forced back as wheel and disk are stepped forward. But as the next notch of the stopping disk moves into a position opposite roller 39, the plunger is advanced again by its spring and roller 39, seating in the notch, latches the disk, andv hence'the wheel, against further movement.

In order that the spindle may be rotated by hand, it is provided with a knob or hand wheel 42. To release the stop means, to facilitate hand rotation, plunger 38 may be with- There is provided means for preventing spinning or overthrow of ratchet 68. As

here illustrated as an example, secured to ratchet 68, as at 106 (Fig. 7), to move there'- with, is a locking wheel 105 having spaced notches 104 (Fig. 2) equal in number to the teeth of ratchet 68. Normallyengaging one of the notches 104 is a tooth 103 formed on the end of a plunger 101. This plunger is slidable'in the walls of a hollow guide bracket 92 secured to the housing 53, its toothed and extending through a hole in the housing wall (Fig.3); Plunger 101 is moved by a "lever 97 located within bracket 92 and pivoted on a stud 98. To connect lever 97 and plunger 101, the lever 97 carries a spherical headed screw 99, the head ofwhich can. swivel in a bore 91 formed in an enlargement 100 on plunger 101. A spring 107 normally holds the parts in such position that tooth 103takes into a notcli104 of stop wheel 105. I

' While the parts'are in thisrelation, wheel 105, and hence ratchet 68, cannot rotate.

The plunger 101is withdrawn, at theproper time, to permit an advance step of ratchet 68. To this end, as here shown as an example, at the other end of lever' 97 is a second spherical headed screw 96. Its head can swivel in a" bore 95 formed in an enlargement 94 on a plunger 90. This plunger also is slidable in the walls *of bracket 92, its enlargement 94 being'located' within the brack et .(Fig. The plunger extends into housing 53, through a hole in'the w all, and to its inner end is secured, by screws 89, a cam follower88. This cam follower is engaged by acam 87 (Figs. 3 and 9) mounted on the flat surface of gear 54.

For each complete revolution of gear 54,

cam 87 engages follower 88 and causes plunger 90 to be drawn inwardly. This :movement of plunger 90 swings lever 97 and so withdraws plunger 101 to freetits tooth 103 from notched wheel 105. This permits ratchet 68 to rotate under the stroke'ofpawl 79. Cam87 is so arranged that it causes withdrawal of tooth 103 at the proper time to permit pawl 79 to operate and releases follower 88 for the return of the parts, under force of. spring 107, at the end of the predetermined movement of. ratchet 68; Thus, plunger 101' is advanced to cause its toothed end 103 to engage the next notch 104 of wheel its entirety includes means for guiding the gravity-discharged crowns to a receptacle and means for automatically shifting the guiding means, for discharge into, another receptacle, upon discharge of a predetermined number of crowns. This guiding meansmay have the form of a chute or spout and this spout may be movable from one po sition to'another after a predetermined count. In the embodiment here illustrated as an example, beyond the counting wheel, chanml 16 opens into a chamber (Fig. 5) which communicates withthe mouth of a chute or spout 46 (Figs. 1 and 4). The top of this spout, and an aim 111 secured to the bottom of the spout, are pivoted to housing 14 by pins 47. Fig. 1, and the full lines of Fig. 4 show the spout in an intermediate position in which it may conveniently be used should the automatic shifting means be discarded. The dotted lines of Fig. 4 indicate the extreme positions into which the s out is alternately moved bythe automatic s ifting means. discharge side of the counting wheel is a plate or chute 48 which extends into the mouth of spout 46, as at 49, regardless of the pivotal position of the spout. At its other end, plate 48 has a finger (Fig. 7) which rides tangentially in a groove 51 formed in the periphery of wheel 16. This finger serves to lift the crowns away from the surfaceof the wheel 16 as they reach the counting point and so aids in their discharge. The crowns, after actuating the counter, therefore, slide down chute 48 into a spout 46 and slide down the spout to be discharged into a receptacle, such as'a packing case 46, which may be placed under the spout.

The spout is, as here shown, swung from one extreme position to the other by a pin 113 riding in a slot 112 in pivot arm 111. This pin is fastened to the, top of a slide 114 which is freely movable back and forth on a bracket 115 by which it is supported. The slide is moved by-a pin 116eccentrically mounted on the face of a disk 117 and adapted to work backand forth in a groove 118 formed in the side of theslide as the disk 'is rotated.

The parts are so arranged thatone half a Extending downwardly, from the revolution of disk 117 gives slide 114 the necessary stroke to swing the spout from one extreme position tothe other. During the second half of the revolution-of the disk, slide 1350,1645 V f p 55;

51-14 is 'rever-sed and the spout'swung back to,

Disk1171s mounted-oneshaft 119 rotatalble in aloear ing "120 'and carrying one'sec- 'tion' of atWO part tOothed clutch 121. This clut'c h' "section is zslidalo'ly keyed to shaft 119 by means" oft-we pins'122 riding in a keyway 123." 119' is rotated only when the clutch sectionsare engaged. Theother sec- ;tien' o f ithis clutch is secured to and rotates with a shaft 127 ;j ournaled in hearing 128' we and driven by interin'es'hing ggears 129, 130

from an extension of shaft 24. fine shaft 1 127 and its clutch section, therefore, consti- *tute: alive art ofthe spout-swinging mecha- I 11'1S111A that rotates continuously while the 1113-? ehine is in operation. At the :propertime,'

by means tob'e described, the {dormant half I of clutch 121 is moved into'venga'gement with "the live half to cause rotationof shaft 119 anddisk 1 1-7,

'There :is'- jprovided means whereby the V eelutch is @caused" to be engaged, for-1 spout movement, and there'a fter disengaged at the "end of halifia revolution. --To this end, ashere I 'fifacefof'a clutch'cam .126'coupled'to this clutch section. Cooperating with theffac e: of this "camaisfasstop 1pin150'. Under normal or dorimant rc'on'diti'ons, afhighi level on the :camtis E as ' fdrawa'liofa'stop 'pin 150; In the present em bodi nent, the pin is normallydield toits '40 idutyby aispring 153 :confin'ed' between-raz col- ;presentdztorthe stop pinuand'zthe parts are so arranged that; this engagement of cam "and ipin 'heldsthe; ca nclutch unit iback to'ithe qleifiilll Fig'.:5') "with:the clutchdisengaged.

"The clutchf'is caused to .beienga gedby-With fla r? i150 on the a nr and :a screw plug 154 in *the bettomaoif aspringihonsinglfil. Thepin I :is withdnawnrfrom stopping position-:by, a

v Veplug T154, whenflleverml'l l 'is swung down end engages the headof-iscrew 1 19 and pulls v down ipin 150 'to withdraw :it fromstoppmg i pesi-tiomswhereupon spring 12% moves the slid'a ble'i clutch section forward" toiengage the l lever: :pivoted :by astud screw' -14L5 to at end :of pins-150 which extends down through :on' its :pivot, as laterfdescribed, fits forked live clutch :vsection. the force exerted i on 163761214 1- Zis :relieved, pin 1502is returned ztozinitiall'position tloy its spring, the head of screw i'il4i-9 ipul l ng'ilever .144: back iito :normal to the. clutch engagement-k Beyond the'high level on the oan is low: "or neutral point r-cached by a sudden drop; By the; time {in *unit,' the largest predetermined countcorre- T sponds to a complete revolution of ratchet or 200 gross. I. ibracket l'tfiiaonhousing This leverihas a ifonkediend 148 which-straddles fan :ahutment I :SCEGV 2149f adj ustably threaded into #cheialower 126 *has ,rotated "far enough to presentfthis neutral poin't tothe pin; Consequently,

"150, injthis-positionof the'cam, doesno'tin I terfere-w ith-theclutch. Beyond the neutral: point, however, the cam face has a gradual i riseto a second high point.- ,Asthe cain'ro 'tates, therefore, pin 150 ridesup this incline andgradually cams the slid'able clutch-unit bl ack'againstits spring. The 'caInis so de-- signed that it presents the high level to'j pin 150 has heen returnedto initialpositi0n,;cam V '150 t0 effect complete disengagement "ofthe I clutch-atthe end ofhalf a revolution 'of'shaft V 1 19. The latterthen remains dormant until lever 1 14 again withdrawspin- 150; 1

i (321111126 is so forined thatthe sudden dnop to "neutral, the gradual rise and the high level lare duplicated for; each 180 of the'i' cams circumference. At the next withdrawal' of pin 150 e by lever 144, 'therefo'refs the cycle just described'i's duplicated-for the second half of cam" 1267togive shaft-1 19 a v second; :half "revolution.- "*III 21 this case, htiwever, while disk i117 *makesitis s'econd half revolution, slide 11 1 is given 'a-reverse' stroke and the I spout; is swung fbaek to initial jposi-- tion,-as before-described., i I

, Means "is provided forfactuating lever fliil l at lthe end of predetermined counts and the actuating parts may be set :or afdjfusted, s that actuation may take place at theen'd of "any I of v'arious different totals. Sincethe actuation depends, in the present 'enib'odil ment, "on'the rotation-of the gross-registering 68 lathe present instance, this-ratchethas Q OOteeth, "Consequentlm the largest possible 1 count for one position of'the' sp'out is 200 gross. The spout may be moved, however,

ent embodiment, provision is made for mov- Y ingit'he spout following To actuate lever 14%, "as I here shown, the

fcoun'ts of 1, 25, 50,

lever has a pin 143 enibraced by one O'fiit number o f notches flglfformed in the penip'hery 0f adisk' 138. This-disk is mounted-0n a spindle 131 (Fig.7) journale'diin a bearing bracket 13% When spindle is rotated, the consequent movement *of disk 13343Gt11- ate's'lever $144 throughithe notch and pin e'on nection'. As later"described, the particular notch ofdisk, 133 which takes over 9111143 depends on theparticular count provided for, but the actuation 'of lever 14 1 is the same in all cases Considering, first, actuation at the end of a count of25 gross, spindle 131 is rotateclby engagement of cooperating elements on the spindle and gross-registering unit respectively. To this end, pinned to spindle-1315s x i-105 at the end of any smaller count. "Inth'e pres-'- tity to be packaged. For 25 gross lots,5since one revolution corresponds to 200 grss, the

isteringunit is provided with eight actuating elements equally and accurately spaced Jahead, each successive finger 137 engages lug 136 and by this engagement causes the angular movement of spindle 131 necessary to actuate lever 144, whereby pin 150 is withdrawn to cause swinging of the spout. The parts are so arranged that this rotary movement of spindle 131 is only slight and fingers 137 quickly wipe past lug 136. As soon as a finger is free, of the lug the force exerted on lever 144 is released and the lever can return to initial position due to spring 153, as above described. By this return movement of the lever, disk ,133 and hence spindle 131; and drum 135, are returned to initial position ready for the next actuating. finger.

Thus lever 144 is actuated tocause swinging of the chute for each eighth of a revolution of the gross-registering unit, in other ,words, at the end of each gross of discharged crowns. V

It will be understood that'after the spout has discharged its quota to one receptacle and moved away, an attendant may remove the filled receptacle and substitute an empty ready for the return movement of the spout. Thus crownslmay be delivered to successive packaging receptacles in counted lots, without stopping the counting mechanism.

For packaging other lots than 25 gross, either the actuating fingers 137 or the lug 136 must be rendered inactive. .In the present embodiment, drum 135 is rotated -to movelug 136 out of the reach of fingers 137 To this end, spindle 131 car-' ries a knob or finger-piece 142 by which spindle 131 may be drawn forward (to the left in Fig. .7) thus freeing disk 133 from en- .but offset from each other both circumferentially and axially on the drum. The lugs are i spaced circumferentially by angular distances equal to the angular spacing of notches 134 1n d1sk1133.; Only one lug can be in activeposition at any one time and the particular lug-that is active dependson which notch 134 IS in engagement with lever pin 143. In other words, disk 133 not only serves as part of the lever-actuating mechanism'but also as a selective element to determine the unit count for one spout position. Selective adjustment is made by drawing spindle 131 for: ward to free disk 133 from pin 143, turning the spindle to bring the notch 134 correspond;

ing tothe desired drum lug in line with pin .143, and moving spindle 131 back to normal axial position with such notch taking over pin 143. The spindle is retained in normal axial position by a spring 147. Finger-piece 142 may bear indicia for showin the proper angular position of spindle 131 or the various counts. s i

For'counts of 50 gross, spindle 131 is adjusted to engage the proper notch of disk 133.

toplacelu 136" in active position,i. e. u permoston t e drum. To cooperate wit lug 136", the gross-registering unit carries four actuating elements spaced apart. As

here shown, alternate shoes 138 are rovided' with actuating fingers 137 spaced om fingers 137 and lying in a plane passing through lug 136. Consequently, as the gross-registering'unit, is stepped ahead, a finger 137 engages lug 136 to rotate drum 135 and -actu-:

ate lever 144 as above described, for every quarter revolution. Thus, the spout is swung at the end of every 50 gross. N

- For lots of gross, two of the shoes 138 spaced 180 apart have actuating fingers 137".

These fingers are spaced from fingers 137 and lie in a plane passing through the corresponding lug on drum 135. The spindle unit having been set with this lug in active posiated, as the gross-registering unit 'is step (1 forward, twice for each revolution of the atter. Thus, the spout is moved at theend of each 100 gross.

For lots of 200 gross, one only of theshoes 138 has an actuating finger 137?. This is spaced from finger 137 and liesin a plane passing through the corresponding lug on drum 135. y The spindle unit having been set with this lug in active position, the drum is rotated and lever 144 actuated, as the gromregiste'ring unit is stepped forward, once for each revolution of the latter. Thus, the spout is swung at the end of each 200 gross.

For single gross lots, actuation is efi'ected directly. from unit-registering gear 54, since it would be inconvenient to provide wheel with 200 actuating elements. To this end, mounted on gear 54 is an actuating finger 140 lying in a plane including the corresponding.

lug on drum 135. The spindle unit having been set to place this lug in active-position, the drum is rotated and lever 144 actuated once for each revolution of gear 54. Thus, the spout is swung at the end of each gross.

ER is believed that the operation of the apparatus will be clear from the above without 1 further description.

This application is a division of my prior application, Serial No. 207,371, filed July 21,

tion, the drum is rotated, and lever 144 actu 1927 which has since matured into Patent No. 1,741,387, granted December 31,1929.

What is claimed is: 1. In acounting mechanism, and in combinatio'n, a hopper for receivinga mass of crowns, means whereby the crowns are arranged in a single row, a delivery slide, means including a disc having a circumferential groove, crown moving elements carriedthereby for moving; the arranged crowns to said chute, a counter arranged to be actuated by the successive crowns in their passage to said 1 chute,-and a relatively fixed crown engaging finger extending into said groove for guiding counted crowns away from said disc. I

2. In a counting mechanism, andin combination,;a hopper for receivinga mass'of crowns, said hopper having a channel for holding a single row of crowns, means for causing crownsin the hopper to. enter said channel, a counter, a guide track having a yieldable. track entrance crownv guide and means including'a rotatable member-and a plurality of flexible crown moving elements carried thereby for transferring the crowns from said channel to said guide track and presenting them to said counter.

3.111 a countingmechanism, and in com.-

bination, a hopper for receivinga mass of crowns, said hopper havmgachannel for f holding apsingle row'of crowns,'a horizontal rotating'plate inthe hopper for causing crowns in the hopper to enter said channel, acounter, and means including a plurality of flexible crown moving elements for transferring the crowns from said channel and presentingthem to said" counter.

4.1m a counting mechanism, and in combination,, a hopper for receivinga mass of crowns, meansfwhereby the crowns are arranged in asingle row, a counter, means for presenting the arranged crowns to said 'binatioma channel forathe, passage of a sin counter, and'meansfor registeringthe count ing levers pivoted to rock about a single axis, spring means urging sald levers into engagement, an indicator actuated by one of 'saicl levers, means for limiting movement of the indicator actuating lever, a projection onztne other lever movable in the arc of a circle, and means for actuating said last named lever.

6; In acounting mechanism, and in com bination, a. hopper for receiving ,a mass of crowns, meansfor arranging the crowns in a single row, a counter, and means including an upwardly extending guide track, a yield able crown gulde and a series of spaced crown-lifting devices for movingcrowns in said track and presenting'the arranged' crowns to said counter.

In testimony whereof, I have hereunto set my hand.

' VINCENT WAITKUS. I

of said counter, including a rotatable disc, a,

.pin carried thereby, a pair of register actugle rowof crowns, a counter comprising a wheel having a predetermlned number of pockets of a size to embrace a crown and ex tending into said channel whereby said wheel is given angular movement by the passage of a crown, means for causing movement of the :crowns along said channel and past said counter, and means for registering the count I of said wheel, including a pair ofinterengag-

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