US2274115A - Computing counter - Google Patents

Description

Feb. 24, 1942. E. WILD 2,274,115

COMPUTING COUNTER Filed June 17, 1937 8 Sheets-Sheet 1 Feb. 24, 1942. E. WILD 2,274,115

COMPUTING COUNTER Filed June 1'7, 1937 8 Sheets-Sheet 2 [dn rd IW/d If T'O/PNE Y Feb. 24, 1942. E. WILD COMPUTING couma 8 Sheets-Sheet 3 Filed June 17, 1937 Feb. 24, 1942. E. WILD COMPUTING COUNTER Filed June 17, 1937 8 Sheets-Sheet 4 H I I U 4 I z I i 5 VII/II IIIIlI/IIIl lll! 3114111411!!!flllllJlI/IIIIIII/II! :Ihll

i h. Elisa Feb. 24, 1942. E. WILD COMPUTING COUNTER Filed June 17, 1937 8 Sheets-Sheet 6 Jr TO/P/VE Y Feb. 24, 1942. E. WILD commune coun'rrm Filed June 17, 1937 8 Sheets-Sheet 7 7 w w w 7 M7 M Z J 5mm m a k w w m M f w a a a l 7m Wm M MHV I: in wwfi ll Am w 2/ m w m/ w m 2 w r/J b fl w Feb. 24, 1942.

E. WILD 2,274,115

COMPUTING COUNTER Filed June 17, 1937 8 Sheets-Sheet 8 fly. 22 fig Z3.

Patented Feb. 24, 1M2

oF'mcE COMPUTING COUNTER.

Edward Wild, Hartford, Conn, assignmto ,Veeder-Root Incorporated, a corporation of Conneeticut Application June 11, 1331, Serial No. 148,720

11. Claims.

My invention relates to computing counters.

It has among its objects to provide an improved counter adapted to indicate quantity and cost. as, for example, in dispensing gasoline. ii further object of my invention is to provide such an improved counter of the removable counter unit type and having improved means whereby the assembly and removal of the counter units is markedly facilitated while also making possible the use of improved units. Another object is to provide such an improved onstruction having shutter mechanism for the several counters and improved connections for enabling the removal of any selected counter unit without requiring either the disconnection of the shutter mechanism or the removal of the same before the unit can be removed from the machine. A still further object is to provide an improved construction and arrangement of counter units, of shutter operating mechanism, and of driving and resetting mechanisms, whereby'the above objects may be obtained. Still another object is to provide an improved and simplified construction wherein the elements are so disposed as to require a minimum of operating gearing connecting the same and to produce a very compact structure, all while still obtaining the above markedly increased facility in connecting or removing the several counter units and enabling the several elements of the drive and resetting mechanism to cooperate in an improved manner with the counting mechanism of each unit and the shutter mechanism therefor. A further objectis to reduce the manufacturing costs and facilitate service in the field, by making possible the use of improved sub-assemblies including the several counter units and their resetting and shutter mechanisms and shutter operating mechanisms therefor, whereby these several mechanisms may cooperate with the driving and resetting mechanisms on the machine frame in an improved manner. These and other objects of my invention will, however, hereinafter more fully appear.

In the accompanying drawings, I have shown for purposes 'of illustration, one embodiment which my invention may assume in practice.

In these drawings:

Figure l is a perspective view of the complete counter, portions of the front cover plate being broken away to facilitate illustration;

Fig. 2 is a front elevation of the counter, the above cover plate being removed;

Fig. 3 is a top plan view of the construction shown in Figure 2;

Fig. 4 is a rear view oi-the construction shown in Figure 2; u

Fig. 5 is a side elevation of the same construction, the view being taken from the right of Figure 2 Fig. 6 is a section on line 8-6 of Figure 8, the ends of the counter units being shown in elevation and certain parts of the same being broken away, to facilitate illustration;

Fig. 7 is a sectional view on line 1-4 of Figure 2;

Fig. 7a is a detail perspective showing the swinging stop arm and latch mechanism;

Fig. 8 is a sectional view on line 8-8 of Fig- Fig. 8a is a detail perspective of the shipper operating cam;

Fig. 9 is a sectional view on line 9-4 of Figure 2, the number wheels and certain of the connections thereto being shown in elevation;

Fig. 10 is a sectional view on line i0-il of Figure 2;

Fig. 11 is a perspective view of the left hand cost counter unit;

Fig. 12 is an end view of the unit shown in Figure 11, the same being shown as meshing with a gear in the resetting train on the frame, and the counter resetting gear being broken away, the shutter operating member being shown in two positions;

Fig. 13 is a detail section on line 13- of Figure 12;

Fig. 14 is a like section on line l4-H of Figure 12;

Fig. 15 is a vertical longitudinal section through the counter unit shown in Figure 11 and its supp rt upon the frame;

Fig. 16 is a sectional view on line i6-i8 of Figure 15;

Fig. 17 is a sectional view on line Il-il of Figure 15;

Fig. 18 is a sectional view on line l8'il of Figure 15;

Fig. 19 is a sectional view on line iO-IS of Figure 15;

Fig. 20 is a sectional view on line 202ii of- Figure 15;

Fig. 21 is a detail view of the resetting mechanism similar to Figure 2 and showing this mechanism in reset position, but showing a modified construction, the remainder of the mechanism being omitted to facilitate illustration;

Fig. 22 is a simplified view similar to Figure 21, showing the position of the parts in the first holding position of the no-reverse pawl;

-frame member I.

provided between the hub of the gear and the Fig. 23 is a similar view showing the position of the parts when the pin is out of the notch in the cam;

Fig. 24 is a similar view showing the parts in their fourth holding position, the cooperating Fig. 28 is a similar view showing the parts justprior to the completion of the reverse movement at the end of resetting, and

Fig. 29 is a developed diagram of the resetting cam and of the resetting cycle of the mechanism shown in Figures 21 to 28.

In this illustrative construction, I have shown a computing counter of a usual type adapted to cooperate with a meter (not shown) and a variator (not shown) in a well known manner in measuring gasoline and indicating the cost thereof. Herein,-(Figs. 1 and 4) it also comprises left and right hand quantity counters, generally indicated at I and la, respectively, driven directly from the meter, and left and right hand cost counter units, generally indicated at 2 and 2a, respectively, driven from the meter through the variator; the several counters being in the form of improved units constructed, arranged and cooperating with improved driving and resetting mechanism and having improved shutter and shutter operating mechanism on these units cooperating with said resetting mechanism in an improved manner, all as hereinafter more fully appears.

Referring first to the drive for the quantity counter units I, la, both of these are driven from a vertical centrally located shaft 2 (Fig. 7) driven by the meter. As shown, this shaft is connected through a bevelled pinion l with a bevelled gear 5 fixed to a centrally located horizontal drive shaft 5. This shaft, in turn, is suitably journaled at its front end in a front frame member I ex-.'- tending across the several counter units and carrying the same, and joumaled at its rear end in a supplementary narrower upstanding frame member I fixed at the top and bottom in rearwardly extending projections 9 and II on the Herein, a thin washer II is frame 8, while the shaft 0 is slightly movable longitudinally in its journals. Also, the gear I is provided with a flange I2 (Fig. 8) on the opposite face of the same, forming a journal for a like cooperating flange on a shipper sleeve I2, which sleeve herein houses a coiled spring ll acting between this shipper sleeve and the gear 5, within the fiange I2 on the latter. As shown, the shipper sleeve I3 is journaled at its front end at IS on the shaft 6, and is also provided with a bushing II on which is rotatably mounted a quantity counter driving member II having counter driving gear teeth I. on its rear end, adapted to drive both quantity counters as hereinafter described, and also carrying a friction clutch element I9 on its front end. Herein, this member I'l also carries a radially extending stop or block 20 (Figs. 6 and 7) on a portion of intermediate diameter between the gear teeth II and the friction clutch element I0. This block 20, if desired, may be cast integrally with the member II, but herein is carried on an annular member 2I suitably poured or otherwise cast into a corresponding annular groove in the member I! between the portions I! and I! thereof. Cooperating with the friction clutch element II is a like element 22 disposed between the latter and the frame I and suitably fixed a at 22 to the shaft I. Thus, when the elements I! and 22 are connected, the quantity counter driving gear I8 will be driven from the meter driven shaft 2.

Meshing with opposite sides of the counter driving gear II are intermediate gears 24 and 2!, herein carried on shafts 2| and 21 (Figs. 8 and 10). Of these. the shaft 2| is carried by the left hand quantity counter unit I, while the haft 21 is carried on the right hand quantity counter unit In; the shaft 21 being a long shaft extending the length of the counter unit In and journaled thereon in removable end journals 2|, while the shaft 20 is a short or stub shaft located only at the front end of the unit I and journaled therein in a single like journal 2!. Thus, it will be evident that with the driving gears 20 and II disposed on opposite ends of the counter units I and la and connected to the lowest order denominational order wheels thereof, the intermediate gear 24 on the unit I will mesh with the driving gear III at the front end of the counter unit I, while the intermediate gear 2| will rotate its shaft 21 and a gear 22 on the rear end of that shaft and the unit Ia, which meshes with the gear 2| on the counter unit Ia. Accordingly, the counter mechanisms of each of these units I, In will be driven from the meter driven shaft I through the gear II on the member I! or disconnected from the shaft 2 depending upon the position of the shipper II. Moreover, it will be observed that when the shipper'member II is moved longitudinally to disconnect these clutch lements I, 22, i. e. to the right as shown in Figure 8, the gear II will remain connected with the lowest order wheels of both counters. through the train driven by the intermediates 2i, 2|,

- Also, the member I1 then will be freely rotatable on the shipper member II, and the movement of the latter will compress th spring ll in such manner as to force the hub of the gear 8 to the right (Fig. 8) and press the washer II against the adjacent shaft bearing on the frame I in such manner as effectually to brake the shaft 0 and the friction clutch driving element 22 thereon. Attention further is directed to the fact that the structure is such as to effect braking before the gizsconnection of the friction clutch elements II,

Referring next to the drive for the cost counter units 2, 2 ,11: will be observed that the same is generally similar to that just described. Here a shaft 25, corresponding to the shaft 2 but driven from the meter through the variator, is connected through a bevel pinion 80, corresponding to the pinion l, with a bevel gear 31, corresponding to the gear I. This gear 21 is herein fixed to the protruding end of a shaft 30, corresponding to the shaft I, and similarly journaled in the frame members I and 2 and also similarly reciprocable in its journals. Here a collar 2! inside the frame member 3 corresponds to the hub of the gear I, heretofore described, and is fixed to the shaft and provided with a washer ll, corresponding to the washer II. Moreover, a like shipper sleeve II is provided having a coiled spring Incorrespending to the spring II, but here acting against the end of collar 2.. Further, the sleeve II caring motion of the aprons ries a member 62, to themalnber l1 and having co gearteeth l9 and a friction element 64, corresponding respectively to the gear teeth I9 and friction element ll hereiofore described. Also an intermediate member 49, corresponding to the member 2|, and carry. ing a block 49 (Fig. 6), corresponding to the block 29, is also provided, while a driving friction element 41 corresponds to the friction element 22, and is similarly fixed to its shaft 99, the member 42 being journaled at 69 on the shipper ll similarly to the member I I.

It will be also evident that the operation of this cost counter drive will be essentially similar to the quantily counter previously described. when the clutch elements 46, II are connected or disconnected. Further, the gear 49 (Fig. 9) is connected to intermediates 9 and 69. corresponding to intermediates 25 and 26, and these intermediates are carried on short and long shafts 6i and 62 mounted on the units 2. 2a and corresponding to shafts 26 and 21, while the gear 60 and a diagonally opposite gear 69 are connected to counter driving gears 64. 96 on the lowest order wheels of the units 2 and 2a, respectlvely. Thus, the lowest order wheels on the cost counter units 2, 2a are driven similarly to the corresponding wheels on the quantity counter units I, la, when the proper clutch mechanism, herein including the elements 64, 41 is I connected. Also, when these latter elements are disconnected, the collar 39 will press the washer 49 against the adjacent shaft bearing to brake the clutch driving element 61 and consequently the shaft 26 and the elements of the variator, the timing of the clutch and brake mechanism also being as heretofore described.

Operatively connected to actuate the shippers i9 and ll is also improved shipper operating mechanism. This mechanism (Figs. 7 to 10, inclusive) includes a reciprocable shipper operating member 69 longitudinally reciprocable on a horizontal main reset shaft 6i, disposed between the shafts 38 and 6 and also suitably journaled in the front and rear frames I and 6. Herein, this shipper operating member 60 is provided with usual forked ends 62 extending around the shipper members l3 and ll. One of these ends 62 engages a collar 63 on the shipper i9, while the other engages one of a pair of adjusting nuts 64 adjustable on a threaded portion 66 on the shipper ll Also, the hub 61 of the member 60 is carried on a sleeve 66 in which the reset shaft 6| is freely rotatable. Further, it will be noted that the hub of the member 69, herein indicated at 61, is suitably bell-mouthed, as shown at 69, at its rear end in such manner as to permit a rockmember 60 relative to the sleeve Figs. 7 and 10, the member 69 midway between its ends with 66. As shown in is also provided oppositely projecting lateral extensions 69. Each of these, in turn. is bifurcated at I9 to receive a crowned roller ll freely rotatable on a stationary stud 12. One end of this stud is also fixed to and enclosed within one of thebifurcations on the portion 69, while the other end projects into an aperture II in the portion 69 in such manner as to permit access to the bearing for the roller Iii. Cooperating with these rollers II. on opposite sidesof the member 60 is a rotatable cam member 14, herein formed integral with the sleeve 69. Further, a hardened annular cam track 15 of suitable wear-resistant metal is seated in the face of the member 14 adjacent the members II and normally engages therewith.

. the notches 16.

log cam 92 is connected by As shown. this cam track II is also provided with diametrically opposite notches or wells I6 (Fig. 9) adapted to receive the rollers II in the normal position of the parts. so that rotation of the members 14 will automatically cause the rollers to pass out of the notches I! and ride over the remaining surfaces of the member II which thus provide dwell surfaces. Here attention is also directed to the disposed yoke I1 is disposed in front of the rotatable member I4, which yoke is rigidly connected to the rear frame member I by arms l9, II, respectively disposed above and below the lateral projections 69 (Figs. 9 and 10). Moreover, note that between the member 14 and the hub of this frame member 11 a suitable ball thrust bearing 99 is provided,-the same herein being seated in the hub of the frame 11.

In operation, the shipper operating member 99 including the rollers Ii, being loosely carried on the shaft 6i when the rollers II are in the wells or notches 16, it will be evident that when the rotary member 14 is rotated, the rollers II will be forced out of these notches in such manner as to force the member 60 back longitudinally on the sleeve 66 and, thereby, cause its end 62 to engage the collar 63 and nut 64. As a result, the springs I4 and Ila of the quantity counter and cost counter drives, respectively, will be compressed and, through the mechanism associated with the shippers I3 and I, those drives will bebraked and thereafter disconnected from the driving clutch elements 22, 41, as heretofore described. Moreover, it will be evident that by the adjustment of the nuts 64, one of which engages the end 62 of the shipper operating member 69 and the other of which forms a locking nut, it is possible to vary the adjustment as desired. Obviously, when the member 14 is reversely rotated, the parts will also be returned to their normal position wherein the rollers H are in the notches 16, under the action of the springs I, la.

Operatively connected to the rotatable cam member 14 is also improved mechanism for rotating this member to control the shipper cooperating member 60 and, through the latter, control the braking of the quantity and cost counter drives and the connection of the friction clutches therein, as previously described. This mechanism includes a link 86 (Fig. '1) pivotally connected at its lower end at 96 to the back of the member H at a point slightly below one of At its upper end, this link is adjustably pivotally connected through an arouate slot and bolt connection 91 (Figs. 4 and 8a) to a laterally extending arm 98. This arm, in turn, is journaled on the front frame I on a forwardly extending shaft 89 to the rear of which the arm 89 is pinned, while the front end of this shaft projects through and beyond the frame I and carries a toothed sector 90 (Figs. 2 and '7). This sector, in turn, cooperates with like teeth 9| on a pivoted controlling cam 92 pivoted on a forwardly protruding journal portion 93 on the frame I, coaxial with the shaft 39. This swinga coiled spring 96 to the frame I in such manner that the cam 92 is biased to the position shown in Figure 2, the cam 92 herein being provided with an arm 96 to which this spring is connected and also adapted to engage a stop 96 on the front face of the frame 1 in the normal position of the parts illustrated. Further, note that the cam 92 is provided with a depending arm 91 carrying a fact that a diagonally pin 90 receivable in a notch N in a rotating cam IIIl fixed to and rotatable with the reset shaft II whenever that shaft is rotated during reset- 'ting; a suitable key (not shown) being connecand thereby rotate the shaft 89. Thus, through the link 85, the member I4 is rotated and, accordingly, the drives of the quantity and cost counters are braked as heretofore described, while the driven friction clutch elements I9 and H are also disengaged from the driving friction clutch elements 22 and I1. Attention here is further directed to the fact that this braking operation occurs in the first stages of movement of the cam 92, while it will also be evident that as the latter returns to its normal position, illustrated in Figure 2, at the completion of resetting, the tooth member 90 will be reversely operated to reconnect the friction elements and release the brake in the last stages of resetting, i. e. as the member 92 is moved reversely by its spring 84 after its pin 98 has reentered the notch 98 on the cam I00. In this connection, attention is also directed to the fact that while both drives are braked at the beginning of the resetting operation and have their friction clutches disconnected shortly thereafter, at the end of the resetting operation, the friction clutches are first reconnected and the brakes thereafter released.

Operatively associated with the reset shaft ii, is also improved reset driving mechanism. This, as shown in Figs. 6, 7, and 8, includes a reset operating gear I suitably fixed to the reset shaft GI and carried thereon, this gear being in rear of the front frame member 'I and in front of the driving elements 12 and ll of the friction clutches, and also having a hub I thereon which, at its rear end, abuts the bearing support '11. Meshing with this gear I05 and on opposite sides thereof, are reset driving intermediates I01 and it'll, each of which is journaled on the front frame member I on a short stud m (Figs. 6 and Of these gears, the gear I" meshes with reset driving gears I II) and III on the upper left hand cost counter unit 2 and the lower left hand quantity counter I, respectively, while the gear I0! meshes with corresponding driving gears I I2 and I I3 on the upper right cost counter unit In and the lower quantity counter unit Ia. Also, these several reset operating gears III, III, II! and iii are each connected through usual angular adjusting means Ill with the several reset shafts H5, H6, H1 and III, respectively. The latter shafts being connected with the number wheels on the various counter units through usual cooperating pawl mechanism, hereinafter described, it will be evident that rotation of the gear I05 with the reset shaft I, will simultaneously rotate the two intermediate gears Ill and I" so that each of these will drive the two resetting gears on the counter units above and below the same, and thereby simultaneously effect resetting of all of the number wheels. Here, attention is also directed to the fact that these gears Ill and III are so disposed as to permit the reset driving gears III, III, III and III to be brought into mesh or moved out of mesh with these intermediate gears upon longitudinal movement of the several counter units I, Ia, 2, 2a.

Operating in timed relation with respect to the reset operating gear I" is also improved controlling mechanism. Herein, this mechanism includes the spring connected swinging cam 02 which, when released at the end of a resetting operation of the reset shaft II, causes that shaft to be rotated reversely to rotate the several counter reset shafts Ill to I II, inclusive, through an angle of 45", as the pin ll returns into the notch II in the cam It". Further, as in a usual construction, a no-reverse ratchet III is carried on the shaft I between the cam Ill and the front frame I and in rear of the cam l2 (Figs. 2

good 9). Cooperating with this ratchet III is also a no-reverse pawl III pivoted on the journal portion 83, heretofore described, and having usual depending arms I" and I" adapted to cooperate with portions of the ratchet I20 in a usual manner; this no-reverse pawl likewise being disposed in rear of the cam 02 above the ratchet III, while a supplementary no-reverse or holding pawl I22 is also disposed beneath the ratchet I20 and likewise cooperates therewith in a usual manner. As shown, the no-reverse pawl I2I also has one of its arms I21 connected through a coiled spring I to the frame, in such manner as to bias the pawl to the position shown in Figure 2, while the other arm II! of this pawl is controlled by spring connected latch mechanism I2 pivoted at I21, having a projection III thereon adapted to underlie a cooperating projection I28 on the pawl arm I25. Further, this latch member I! carries a pin III on its upper extremity adapted to cooperate with a noseshaped cam portion "I on the cam member as.

The operation of the no-reverse pawl III, the latch I", and the supplementary holding pawl III is generally similar to that of corresponding parts disclosed and described in connection with the embodiment shown in Figs. 21 to 28. It may here be said that during a portion of the resetting operation of the reset shaft ii, which rotates in acounter-clockwise direction (Figs. 1 and 2), the no-reverse pawl III will cooperate with the ratchet III and during the remainder of the resetting rotation of the reset shaft, the supplementary holding pawl I22 will cooperate with the ratchet III whereby to prevent objectionable intermediate reverse rotations of the reset shaft 6| during resetting. After the noreverse pawl I2I has performed its function of preventing objectionable reverse rotation of the reset shaft, it is moved out of holding position by the ratchet and latched in non-holding position by the latch II. The, purpose of so latching the no-reverse pawl is to hold the hereinafter described stop engaging arm III in operative position. After resetting and during reverse rotation of the reset shaft, the cam II rotates in a counterclockwise direction (Fig. 2), whereupon the nose-shaped cam portion III on the cam member engages the pin I" of the latch member, thus moving the latch to non-latching position. Thereafter, the spring I moves the non-reverse pawl Ill to holding position and the stop engaging arm Ill to non-operative position. Further, the spring connected cam I! will also cause the desired automatic reverse rotation of the shaft ti and of the several counter shafts IIII ll, inclusive, at the end of the resetting operation; this automatic reverse marg ns operation herein being transmitted from the gear I85 through the two intermediate gears I81 and III and the several reset operating gears II8-II8, inclusive.

Operatively associated with the no-reverse pawl III is also means operative during resetting to control the drive gears I8 and 48 of the quantity and cost counter dri respectively, heretofore described; these means herein cooperating with the blocks 28 and 48 rotatable with these gears and likewise heretofore described. As shown in Figs. 2 and 1a, the no-reverse pawl I2I carries a pin I85 projecting rearwardly through an arcuate slot I88 in the frame 1 and carrying on its rear end a pivoted link I88. This link has a slotted pivotal connection I88 with a pin I40 projecting forwardly from a swinging stop engaging arm I pivoted on the shaft 8I on a sleeve I42 carried on the hub I08 of the sear I85. As shown, this swinging stop member I is connected by a coiled spring I48 to a suitable abutment on the frame so that it is biased to stopping position and the pin I48 is held in the lower end of the slot I99. Thus. during rotation of the reset operating shaft 6| in a resetting directionand toward the end of the resetting revolution thereof, the link I98 is moved downward, in such manner as to permit the spring I49 to swing the arm I about its pivot. This brings the extremities I44 of this arm into the path of the peripherally disposed blocks 28 and 46 rotatable with the gears I8 and 49, respectively, of the quantity and cost counter drives, in such manner as thereby to prevent, in a well known manner, overtravel of these elements of the drive, which also rotate at the end of the resetting operation.

Herein, also, improved means are provided for preventing such rebounding of the gears I8 and 43 as may result from rapid resetting. These means (Fig. 7a) herein include latch members I45 pivoted at I46 near the extremities I44 of the arm I and normally biased to latching position by springs I41 having abutments on these extremities. Note here also that the ends of these latch members are disposed in the plane of the extremities I44 of the member I, and that they carry latch faces I48 parallel to the extremities I44. Also, pins or projections I49 (Fig. 6) are carried on these latch members and engage adjacent side faces of the extremities I44 to limit the latch member movement relative thereto. Thus, when the extremities I44 on the stop arm I engage the blocks and 48, the faces I48 of the latch member I45 will engage the opposite faces of the blocks, in such manner as to effectively prevent rebounding of the gears carrying the blocks. Further, it will be evident that, while in the earlier stages of resetting the ends of the latch members I45 will ride on the peripheral portion of the members 2I and 45 carrying the blocks, the rotating blocks will kick out these latches, and thus permit the latches and the arm extremities I44 to engage and hold opposite sides of the blocks in the period just before the pin 98 on the cam 92 drops into the notch 99. Moreover, both the swinging stop arm HI and these latch members I45 are automatically moved out of engagement with the blocks when the pin 98 drops into the notch 99. as a result of the action of the spring 94 on the cam 92 and the release of the no-reverse pawl I'2I by the latch I26 and consequent raising of the link I89 by the pin I95, all of this block releasing movement occurring as the cam 92 and the varlous counter reset shafts are being moved reversely at the completion of resetting.

Operatively associated with the resetting mechanism and the controlling mechanism therefor is also improved shutter mechanism for the several counter units. This mechanism herein is so constructed and arranged as to effect the operation of the shutters-by the resetting mechanism as the reset operating gears Hi to III inclusive are operated by the intermediate gears I81, I48; the shutters also being operated in timed relation with the control mechanism in such manner as to be closed at the beginning of the resetting operation and opened after the various counter reset shafts III to III, inclusive, have been moved through their final reverse 45 movement occurring at the completion of resetting. Further, it will be observed that this shutter mechanism herein is such as to enable the several counter units to be removed rearwardly as units at will, from the counter driving and resetting trains, without requiring either the disconnection of any shutter operating mec or the removal of the shutter mechanism as a ne preliminary to the removal of the counter unit. Also, this construction similarly enables these units to be assembled without requiring any subsequent connection of the shutter operating mechanism. or any subsequent addition of the shutter mechanism before the counter mechanism is ready for operation. Attention is also directed to the fact that I am able to obtain these advantages while providing improved shutters carried on the removable counter units. and also while continuing to time the operation of the shutters with the resetting mechanism, in such manner that the shutters are closed at the beginning of the resetting operation and before the counter number wheels begin to move, and are not reopened until after these wheels have been returned to their zero position.

In this improved construction, it will be noted that each shutter is of the same construction so that a description of the shutter mechanism in connection with a single unit will sufllce for all. The left hand cost counter has, according y. been used herein for purposes of illustration (Figures 11 to 16). As shown in Figure 15, a shutter I55 is journaled at its opposite ends at I56 on the reset shaft, herein the shaft I'I5; this shutter being of a generally usual construction and having its pivoted ends journaled just inside the end walls I51 and I51 of the counter unit. However, it will be observed that improved operative connections are provided between the reset operating gear H0 and this shutter. These include herein an aperture I58 in the adjacent operating arm I59 of the shutter and a rearwardly projecting shutter operating member I60 projecting through and fitting this aperture and also movable reversely in a corresponding elongated arcuate slot I6I in the end wall I51 of the counter unit.

This member I50 also is connected to the reset driving gear III) by an improved clutch connection including improved elements acting between the gear H8 and a plate I82 fixed against rotation relative to the end wall I51 and suitably spaced therefrom by spacing and locating posts Referring more particularly to this clutch mechanism, note that a coiled spring I64 (Fig. 14) is disposed about the joumaled portion I65 for the shaft H5 in the end wall I51. This spring I64 has one free end extending radially and abutting one side of the arm I60 just outside the frame I81, while the other end engages one of the spacing posts I88; thespring thus operating to bias the member I88 so that it normally engages the upper end Illa of the arcua slot I8I. As shown in Figures 13 and 14, the reset driving gear H8 is also fixed to a sleeve I88 forming a part of the adjusting mechanism III, which sleeve also extends through the fixed plate I82 and has the latter connected thereto by a ring washer I81 suitably attached to the sleeve as by upsetting, to produce a unitary construction. Herein, the member I88 is also provided with a depending Journal portion I88 journaled on this sleeve I88 between the plate I82 and the gear I III, so that the member I88 may move freely about the axis of this sleeve. Also, the member I80 is provided with a suitable ball receiving aperture I69 near the extremity thereof and between plate I82 and gear III, this aperture preferably having a hardened bushing I18 therea in of substantially the diameter of a ball "I disposed in this bushing. Here, moreover, note that the diameter of this ball is greater than the thickness of the journaled portion I88 of the member I60 and the space between the gear I18 and plate I52, and that a round countersunk hole I12 is provided at one point in the gear II8 so that in one position of the parts. the ball may interlock the member I88 and the gear II8. Further, a corresponding but oppositely countersunk hole I13 is provided in the plate I82 in angularly offset relation to the hole I12, the angular relation of these holes herein being such that the ball I1I is cammed out of the hole I12 by the latter under the action of the spring I88 and into the hole I13 just before the member I88 engages the lower end I8Ib of the slot I8I.

As a result of this construction, when the reset operating gear IIII is rotated at the beginning of resetting, the shutter I58 is moved therewith into the closed position of the shutter, the ball I1I acting as a positive connecting means during this movement. When, however, the shutter has reached closed position, i. e. as the member I88 reaches the end IGIb of the slot I8I, the holes I12 and I13 come into registry and the ball is similarly cammed out by the hole I12 to release the member I60 from the resetting gear III and moved into the hole I13 in the fixed plate I82. Thus, the resetting gear I I8 may thereafter continue to move throughout the remainder of its forward resetting operation, while leaving the shutter locked in closed position. When, however, the gear IIII returns to such a position at the completion of its resetting revolution, that the hole I12 again comes opposite the ball "I, the latter will then be free to be moved, by the action of spring I on the member I88 and the camming action of hole I13, into the hole I12, the wall of the hole I13 in the plate I82 then being disengaged. Here note also that this return of the ball "I into the hole I12, occurs at the completion of the forward resetting movement of the gear IIII, so that, as this gear is moved reversely during the reverse 45 movement of the reset shaft I18, the shutter I5! is moved positively into open position; the member I88 then being positively connected to the gear II8 through the ball as just described, while the ball is locked in this position by the plate I82.

The several counter units I, la, 2 and 2a are also of .an improved construction enabling the same to be assembled or removed as units while housing the several number wheels thereof and the shutter mechanism. Herein, the end walls III III

I81, I81 are formed on a longitudinally extending connecting portion I18 integral therewith. This portion I18 also is preferably provided with slots I18 (Figs. 9 and 16) in the back thereof and at the opposite ends of the same, to receive, as necessary, the driving gears carried by the unit shafts 28, 21, 8|, 82. Further, the end members corresponding to the member I81 also carry on their front faces projecting threaded spacing and connecting member I11, three of these members (Fig. 11) being shown herein spaced radially around the axis of the resetting shaft Ill. Also, as shown in Figure 9, these members I11 are received in countersinks I18 in the rear face of the front frame 1 of such depth and diameter as to insure proper location and meshing of the driving and resetting gears, and these members I11 are also connected to the frame 1 by bolts or cap screws I18 extending through and releasable from the front of the frame 1. Attention is further directed to the fact that apertures I88 (Figs. 2 and 9) are provided in the frame 1 into which the front end of the resetting shaft and the adjusting mechanism III on each unit extends, so that this mechanism is readily accessible from the front of the frame 1. As a result of thi construction, it will be evident that upon removing the bolts or screws I18, the entire counter unit including the shutter and the combined shutter operating and reset operating III, may be readily withdrawn rearwardly; the counter driving gears and this resetting gear Ill carried by the unit being automatically separable during this rearward movement. Obviously, a unit may be similarly assembled by a forward movement, the countersinks I18 then insuring proper meshing of the several gears.

The counting mechanism proper which is carried in each of the counter units is of a generally well known type including a series of number wheels I8I, I82 and I83 coaxially disposed and operatively connected through transfer mechanism, with the counter driving gear connected to the lowest order wheel in a well known manner. Referring to Figure 15, the lowest order wheel I83 has a driving gear 58 fixed on spacing members I88 carried on an inwardly bent face I88 surrounding the wheel axis. This face, in turn, carries on its opposite face a spring connected reset pawl I88 (Figs. 16 and 18) adapted to cooperate with the resetting groove I" in the reset shaft H5. In this construction, the pawl I88 is carried in a member I88 constituting a locking disc and having a two toothed gear I88 also cast with this disc; this member I88 being disposed in a chamber I88 formed by the indenting of portion I85. Also, the member I88 is formed integral with a sleeve III on which the driving gear 58 is carried.

The second wheel I82 is generally similar as regards the structure of the member I88, pawl I86 and sleeve I8I and the arrangement of these elements, but it will be noted (Fig. 15) that the end of the sleeve I8I is here peaned over at I82, to clamp a holding disc I83. This, in turn, holds in position a pawl carrier I88 (Fig. 19) having a spring pressed pivoted pawl I88 therein, adapted to engage the base I88 of the two toothed gear I89 on the member I88 of the lowest order wheel I83, in such manner as to stop the wheel I82 when this pawl engages the base I88 in the process of resetting. Further, it will be noted (Figs. 15 and 20) that a driven gear I81 is mounted on the hub I8I within the number wheel I82, and carries on its opposite face, pro- Jections ill carrying spring connected pawls III, which are, in turn, engageable with stop pins 2 and also c operate with opposite sides of a ratchet Ill fixed to'the hub Ill. Herein. the gear I" with the pawls I ll is rotatably mounted on the hub ill between the pawl carrier I and the ratchet "I, the construction thus being such as to provide with a usual transfer echanism. a usual clutch connection between second wheel I02 and the lowest order wheel III. The connection between the second and third wheels being duplicates of that described between the first and second wheels, further description thereof is unnecessary As regards the transfer mechanism between the several wheels, however, it will be noted (Fig. 1'7) that transfer pinions 2.2 are rotatably mounted on pinion supporting webs or members 2" disposed in the frame portion I" and preferably having extensions 2 on their ends receivable in slots 20! in the top and bottom portions of the member I". Here also corresponding extensions 206 are provided on the back of these transfer pinion supporting members or webs 203, which are received in corresponding apertures 201 in the back of the portion I'll. With these members 202 of this construction, it is evident that they may be readily inserted in the member Hi from the front in their proper position to bring their transfer pinions between adjacent number wheels, while it will further be evident that the number wheels may thereafter be inserted in aligned position within the unit casing, whereupon the reset shaft having the unitary clutch connection described above and held in place by the washer I61, may be inserted longitudinally to complete the assembly of the counter mechanism. Here also note (Fig. that the shaft H5 is held in the desired assembled relation by a vertically removable holding clip 208 of usual construction; the latter being bifur cated at its inner end to pass on opposite sides of a reduced portion 209 on the shaft which is within the end frame I" and between the same and the shutter arm I 59, this clip 208 herein also having a bent upper end 2N received in a correspondingly cut out portion in the top of the wall I51. 7

To permit ready access to the counter mechanism while protecting the same during handling, the counter wheels are enclosed within a sheet metal cover 2 (Figs. 1, 15, 16, and 17) of generally U-shaped cross section and having a generally rounded front end 2l2 provided with a horizontal slot 2l3 forming a reading aperture or window. Further, it will be noted that this member 2| l is provided with inwardly bent ends 2 at the back which are suitably connected, as by ears 2l5 (Fig. 1), in corresponding recesses in the back wall of the portion I15. Thus, it will be evident that the counter mechanism will be adequately protected by this member 2H,

while the latter provides a satisfactory reading window and also is readily disconnected and removable whenever desired, by merely springing out the ears 2l5, whereupon the parts are readily separated. I

It will be understood that as shown in Figure l, a front cover plate 2" is carried by the frame I in such manner as to be readily removable while enclosing the controlling mechanism shown in Figure 2. Herein, this plate is provided with spaced lugs .2" on its bottom received in corresponding slots 2! in the bottom of the frame the internal mechanism.

units, a construction is provided in which all of the working parts are adequately protected, while permitting ready access whenever desired. to

attention here is also directed to the fact that an audible signal is herein provided for indicating each gallon counted on the quantity counters, this signal herein also being so connected that it is operated at the completion of resetting. This signal means includes a pin 22. (Fig. 8) on the member I], rotatable with the gear It and projecting rearward from the member I I into the path of a clapper actuating spring 2 carrying a clapper 222 (Figs. 7 and 10) engageable with a bell 223; the latter being suitably supported on the frame I between the same and the left hand quantity and cost counters. By reason of this construction, the rotation of the pin 220 with the gear l8 through a complete revolution, causes the bell to be sounded as each gallon is dispensed, while this gear I. being rotated during resetting, the bell is also sounded as the operation of resetting is substantially completed.

Attention is particularly directed to the marked facility with which the cost and quantity counter units may be connected and removed in this improved construction. More particularly, whereas, in prior constructions it has been impossible to remove the counter mechanisms as units, or necessary to remove the shutter mechanism before the counter units could be removed. or to disconnect the shutter mechanism from the shutter operating mechanism before the units could be removed, in this construction the units are readily removable without requiring the shutter mechanism or its connections to be manipulated in any manner. Instead, the shutters are carried on the units and form a part thereof, while also being operated by improved mechanism also forming a part of these units and of the resetting mechanism. Further, as a result of this construction, it is made possible to utilize a markedly improved and simplified resetting drive conveniently disposed on the rear face of the front frame, in such manner as to enable the reset driving gears of the several units, which herein are also shutter operating gears, to be moved into or out of mesh with their driving gears on the frame, herein also in the form of improved intermediates each driving an upper and a lower combined resetting and shutter operating gear. Attention is further directed to the fact that while these improvements in the removable units and the shutter operating and resetting mechanisms therefor are made possible, it is also made possible to continue to use an exceedingly simple drive operative during counting and likewise carried at the rear of the front frame member, the counter driving wheels carried on the units also being readily and automatically connected to and disconnected from' the drive, as the units are assembled or removed. Thus, all necessity is eliminated for the previously necessary shutter operating connections disposed between the counter driving elements and the resetting train and which previously required connection or disconnection after the units were assembled or before they could be removed. Attention further is directed to the exceedingly compact construction provided.

In Figs. 21 to 28, I have shown a modified form essary, is preferred where a pawl construction of the type illustrated in Fig. 18 is employed; this construction being desirable in order to give a reverse resetting movement of 53, as distinguished from the reverse movement of the resetting shafts, heretofore described. In this construction, the ratchet 223 corresponds closely to the ratchet I23 heretofore described, save that this ratchet 223 is provided with an additional notch 223 between a notch 221 and a nose 223; ratchet teeth 223, 233, I and 232 being provided between the notch 221 and nose 223 as in the form previously described. Further, herein the swinging cam 233 corresponds to the cam 32 heretofore described and is similarly mounted on a projecting Journal 233, corresponding to the journal 33, and adapted to cooperate with a stop pin 235, corresponding to the stop 33, while the cam member 233 is provided with a like toothed sector connection with the clutch operating arm 33, and also with a spring 33. However, it will be observed that the pin 233 is raised to permit a greater swinging movement of the cam 233, in such manner as to permit the cam I33 to move reversely through an additional 9, 1. e. to have a 54 reverse movement, as distinguished from the reverse movement heretofore described. Inasmuch as only the holding pawl 233, corresponding to the pawl I22, and the latch member 231, corresponding to the latch I23, are the only other elements changed in this construction, it is believed unnecessary again to describe more of the remaining mechanism than these elements 233 and 231. Of these, the pawl 233 is mounted on the frame and connected with a spring as heretofore, but it will be noted that herein this pawl is provided with a lateral extension 233 thereon closely adjacent its pivot and adapted to cooperate with certain of the ratchet teeth in different positions of the parts as hereinafter described, while this pawl is here also provided with an elongated tail portion 239 adapted to engage the edge 230 of the swinging cam 233 in certain positions of the parts as hereinafter described. As regards the latch 231, note also thatthis is also of the same general construction heretofore described and similarly mounted on the frame, but that in this construction the latch is shorter so that its pin 23I on the end of the latch, is disposed under the nose 232 on the cam 223 in the reset position of the parts.

In the operation of this construction, with the parts at the beginning of resetting in the position illustrated in Figure 21, it will be evident that with the cam I33 rotated in a counterclockwise direction, the parts will pass through the positions shown in Figures 22 to 28 inclusive in the process of resetting; i. e. of returning to the position shown in Figure 21. Referring first to Figure 21, note that the end of the tail 233 on pawl 233 engages the edge 233 of the cam 233, while the lateral portion 233 on this cam clears the nose 228 on the ratchet 225; the pin 23I on the latch 231 then being disposed under the nose 232, as heretofore described. As the cam I33 is rotated counterclockwise, the shutter operating mechanism will be immediately operated due to the rotation of the several reset operating gears III], III, H2, H3; the latter gears herein commencing to rotate as the cam I33 starts to move. After a rotation of the latter of approximately five degrees, the clutch shipping mechanism including the shipper 30, is operated through the cam 233 and its connections to the shaft 33,

of controlling mechanism which, while not necin such manner as to start disconnection of the movable clutch members l3 and 33. Herein, these clutch members are disconnected from their cooperating clutch members 22 and 31 after approximately fifteen degrees of rotation, but they have a further declutching movement, being in their maximum out position upon approximately 57' of'movement of the cam I33.

As the latter rotates from the position shown in Figure 21 to that in Figure 22, the no-reverse pawl I2I has its left hand arm I23 moved down into engagement with the notch 223 on the ratchet 223 in such manner as thereby to prevent reverse rotation of the latter, the tall 233 on the pawl then still engaging the edge 233 of the cam 233. As the parts continue to move into the position shown in Figure 23, it will be observed that the pin 33 on the earn 233 leaves the notch 33 in the cam I33, the cam in this position being free to turn reversely, but prevented from returning to the position shown in Figure 22 by the engagement of the arm I23 with the tooth 233 on the ratchet 223, while the tall 233 in this position of the parts is out of contact with the edge 233 of the cam 233. Note also that the lateral extension 233 in this position rides on the ratchet as it moves from the position in Figure 23 to that shown in Figure 24, and that the lateral extension 233 engages the tooth 221, in such manner as to prevent reversal; the arm I25 of the no-reverse pawl I2I here also engaging the tooth 232.

As the parts move from the position shown in Figure 24 to that shown in Figure 25, the stop arm operating link I33 is operated in such manner as to start to swing the stop arm I into the path of the blocks 23 and 36, this stop arm engaging these blocks when the cam I33 has moved through approximately This occurs when the nose 223 on the ratchet engages the adjacent extremity of the arm I25 of the no-reverse pawl I2I, and the latter arm is then swung out of the path of the nose 223 as the ratchet continues to rotate into the position shown in Figure 25; the no-reverse pawl then being latched by the latch member 231, as shown, in such manner as to insure that the swinging member I will engage the blocks 20 and 33 at the proper time.

The parts being in this position, as the cam I33 is rotated further toward the position shown in Fig. 26, the lateral extension 233 successively engages teeth 223, 233, 23I, and 232 and engages in the notch 223 in the ratchet 223 when in the position shown in Figure 26, all in such manner as to prevent reverse rotation of the cam I33 and any possible return of the ratchet in a clockwise direction to the position shown in Figure 21, while the movable clutch members I3 and 33 are disconnected from their cooperating members 22 and 31. Further, it will be noted that in the position shown in Figure 26, the shutters I53 are ready to be opened through their spring I33, the several shutters starting to clear when the cam I03 has been rotated through approximately 395. From the position shown in Figure 26, the parts are moved to the position shown in Figure 2'7, the clutch controlling shipper 30 starting its return movement when the cam I33 has been moved through approximately 404. The return movement of the cam 233, however, does not start until the cam I33 has moved through 414, 1. e. until the parts occupy the position shown in Figure 27, when the pin 33 is entering the notch 33 under the action of the spring 33.

omens V w Inthisposition,the no-reverse pawl Ill isstill heldbythelatcha'hbutthepintlismoving downintothenotcmwhiletbecamfllismoving towardthetailfltonthepawliflinsuchmannerastoengage thelatterandthereby hold out ofthenotchllttheiateralextensionfllon that pawl as the parts move toward the position showninl 'igure28.

As the parts are thus moved from the position showninl 'igure2'ftothatinl'igure28,ina

llandllstarttoengagathisoccurringwhen the cam III is still about from its full reset position shown in Figure 21, while the stop arm I startstoreleaseshortlythereafterupon the release of the latch ill which then has its pin moved into releasing position by the nose Ill on the cam 233. However, the clutch members II and arenotfullyengagedrmtilthecam III is approximately 5' from the end of its reverse movement. After these clutch members are thus fully reengaged, the latch 28! is thrown out in such manner as to complete the movement of] the swinging arm Ill imder the action of the spring ill just before, herein 2 before, the com-' pletion of the reverse movement of the cam ill. InFigure 28,itwillbeobservedthatthelatch 231 is shown Just as it disengages the no-reverse pawl III, at which time the pin II is approaching the bottom of the-notch II in the cam Ill and the pawl 28' is again in contact .with the edge I of the cam I, in such manner as to permit the nose 228 to clear the lateral extension 138. Note here also that the connection of the clutch 5 before the end of the reverse movement of the parts, insures that the swinging stop member Ill will not be disconnected before the clutches are reengaged, while the remaining 2' of movement is also such asto insure the release of the blocks 2|, 4| by the stop arm ill.

As a result of this construction, it will be observed that it is possible to extend the range of reverse movement of the counter reset shafts HS-l l8, inclusive, in such manner as, if desired, even more adequately to insure picking up of the reset pawls I and their number wheels when the latter are in the "9 position. Further, by reason of the improved holding pawl construction, it is made possible to prevent efl'orts to cheat, as by rotating the reset shaft reversely when the parts are in the position shown in Figure 26, the holding pawl then preventing the return of the reset shaft to the initial position shown in Figure 21 through the engagement of the lateral extension 238 with the notch 22.. In this connection, it will be noted that in this position of the parts, the shutters are partly cleared and the clutches are disconnected, in such manner that, were it not for this new holding pawl construction, an operator might return a dishonest operator seeks to'furnish afriendorhimselfattheexpenseofthe is however rendered impossible by the pawl described herein, which makes it impossible to return the reset shaft to initial position while reset, to complete the resetting operation and reconnect the clutches before the pump can again be operated. These and other advantages of my improved construction will, however, be clearly apparent to those skilled in the art.

While I have in this application specifically described one form which my invention may assume in practice, it will be understood that this form of the same is chosen for purposes of illustration, and that the invention may be modified and embodied in various other forms without departing from its spirit 6: pended claims. v

whatlclaimasnewanddesiretosecureby Letters Patent is:

1. In combination, a frame carrying a reset operating train driven in one direction during resetting and means for reversely driving said train at the end of resetting, a counter mechanism on said frame having a shutter and cooperating resetting mechanism including a reset operating gear driven by said train, and shutter operating connections between said gear and shutter for closing said shutter at the beginning of resetting and opening the same as said train moves reversely.

2. A counter unit comprising a frame, oper-. atively connected counter mechanisms therein having resetting mechanism including a reset shaft iournaled in said frame and a reset driving gear coaxial with said shaft outside. said frame, a pivoted shutter inside said frame, and

- ments.

3. A counter unit comprising a frame, operatively connected counter mechanisms therein having resetting mechanism including a reset shaft journalled in said frame and a reset driving gear coaxial with said shaft outside said frame, a pivoted shutter inside said frame, and shutter operating means between said gear and shutter including a shutter operating member and a detent movable with said operating member and interlocking said member to said gear in one position of said gear and to said frame in another position of said gear.

4. A counter unit comprising a frame, operatively connected counter mechanisms therein having resetting mechanism including a reset shaft journalled in said frame and a reset driving gear coaxial with said shaft outside said frame, a pivoted shutter inside said frame, and shutter operating means between said gear and shutter including a shutter-operating member biased to shutter open position and extending through said frame and engaging said shutter and rotatable about the axis of said shaft and clutch mechanism for connecting said shutter operating member to said gear, said clutch mechanism being outside of said frame and rotatable about the axis of said shaft.

5. A counter unit comprising a frame, operatively connected counter mechanisms therein the some of the ap-;

having resetting mechanism including a rust shaftfournaledinsaid frameand ajrpetdrivim gear coaxial with saidshaft outside said frame, a pivoted shutter inside said frame, and shutter operating means between said gear and shutter including a shutter operating member biased to shutter open position a'ndcarrying abalisnd oooperatingnormally differently angularly disposed ballreceivingrecessescarriedbysaidgearand frame.

6. A counter unit comprising .a frame, operatively connected counter .mechanisms therein having resetting mechanism including a reset shaftjournaledinsaidframeandsresetdriving gear coaxial with said shaft outside said frame, a pivoted shutter inside said frame, and shutter operating means between said gear and shutter including a shutter operating member biased to shutter open position and carrying a ball and cooperaitng normally differently angularly disposedballreceivingmeansonsaidgear and frame and movable into registry in one position of said gear.

7. In 'a counter, a counter unit having operatively connected counter mechanisms therein and resetting mechanism including a reset driving gear outside said unit, a shutter inside said 7 unit, a'frame carrying said unit and having resetting mechanism including a gear driving said reset'driving gear and means for rotating the latter during resetting and reversely at the end of resetting, and means operatively connected between said shutter and reset operating gear through which said gear positively closes said shutter in the first stages of the resetting movement of said gear and opens said shutter upon reversal of said gear at the end of resetting.

, 8. In a counter unit, a frame having end members, coaxial operatively connected counter mechanisms therein having resetting mechanism including a resetting shaft Journaled in said end members and a resetting gear on said shaft outside one of said end members, a shutter for said counter mechanisms disposed between said end members, and shutter operating 5 mechanism operativelyeonneeted tosaidsesr andshutterandearriedon-id shaft and limsiwdinaiiyremovablefromsaidframeasaunit withsaidshaft.

saidframe,andacoveronsaidframeholding saidlastmentionedmeensinoperativeposition.

l0. Acounter unit eomprisingaframe,operatively connected counter mechanisms therein and shutter for moving said shutter to operative position during resetting and to move the shutter to inoperative position upon reverse rotation of said shaft at the end of resetting.

ii.- In a counter, a reset shaft turnable in one direction during resetting and reversely rotatable at the end of resetting, counter wheels on said shaft, a stationary frame member, a gear fixed to said shaft, a shutter having an arm iournaled about said shaft and located between said frame member and gear, the opposed faces of said frame member and gear each having a recel. saidarmhavinganopeningadaptedtoregister with said recesses, and a clutch ball in said opening.

EDWARD wrm.

Images