US2453342A - totalizing mechanism - Google Patents

Description

Nov. 9, 1948. F. Q. RAST TOTALIZING MECHANISM 2 sheets-sheet 1 Original Filed April 15, 1944 7 Nov. 9, 194s. E RAST 2,453,342

TOTALIZING MECHANISM Original Filed April 15. 1944 V 2 Sheets-Sheet INVENTOR W mw Fred 5H0? QEasi" Patented Nov. 9, 1948 2,453,342 I i I I I Frederick Q. East, Chicago, Ill., assignor to Commercial Controls Corporation, a corporation "of Delaware Original application Aprill 15, 1944, Serial I No. 531,232. Divided and this application February 24, 1945, Serial N0. 579,549 V 2 Claims. (01.. 235-91) This invention relates to totalizing mechanism. One of the objects of this invention is to provide totalizing mechanismwhich is simple, thoroughly practical, and durable in use. Another object is to provide mechanism of the above character which will be efiicient and accurate in operation. Another, object is to provide mechanism of the above character which may be manufactured from inexpensive materials without undue labor costs. Another object is to provide mechanism of theabove character which will be strong and wellable to withstand the strains of hard usage. A further object is to provide mechanism of the above'character which will totalize units fed into it from two different sources without regard for the timing of the feeding of units into the mechanism'from either source. Other objects will be in part obvious and in part pointed out herein after. 1

The invention accordingly consists in the features of construction, combinations of elements, and arrangements of parts, all as will be illustratively described herein, and the scope of the application of which will be indicated in the following claims.

"Referring now to the accompanying drawings in which is shown one of the various possible em- 'bodiments of this invention, I

Figure l'is an exploded perspective view of cert'ain'parts of the totalizing mechanism;

Figure 2 is a vertical section on an enlarged scale taken on the line 2-2 of Figure Figure 3 is aside elevation on an enlarged scale of the totalizingwheel;

Figure 4is'avertic'al section taken on the line 4-4 of Figure 2; and

Figure 5 is a side elevation of the totalizing mechanism partly in section to show the mounting of the differential pinions thereon.

Similar reference characters refer to similar parts throughout the several views of the drawings,

1 ifI his application is a division of the copending application of Frederick K. East, which bears Serial No. 531,232,"=andwhich"was filed on April 15, 1944..

. The totalizing mechanism to be described hereinafte'r is particularly adapted for use in a machine where it is desirable to transmit into a single member the accumulative total of movement of two members. In the embodiment disclosed the feeding members are two gears which are geared to a totalizing member in such a manner that, for example, if one feeding gear makes one-half of a revolution and the other feeding gear makes one-quarter of a revolution, the totalizing member is driven three-quarters of a revolution orthe total of the movements of both feeding gears. As another example, if the feeding gears are feeding units into the totalizing member and three units are fed into the totalizing. member by one gear and six units are fed into the totalizing member by theother gear, then the totalizing member is moved an'amount equal to nine units.

Referring first to Figure 4, the totalizing member, which in the present embodiment is an indicator wheel 214, is rotatably mounted on a bushing 215 mounted on register shaft 290. Indicator Wheel 214 has two sun gear bores 216 and 211 out into the opposite sides thereof concentric to the axis of rotation of the indicator wheel. These bores are made to receive two sun gears 218 and 219 (Figures 1 and 4) which are rotatably mounted on bushing 215 on opposite sides of indicator wheel 214. Sun gear 218, which has twenty teeth, has a gear 280 having twenty-five teeth mounted on and connected to its hub and sun gear 219, which has twenty teeth, also has a spur gear 28! mounted on and connected to its hub having twenty-five teeth.

Indicator wheel 214 has two other bores 282 and 283 (Figure 3) extending into the'body of the indicator wheel from opposite sides thereof. These bores 282 and 283 are in overlapping relationship with respect to each other and bore 282 overlaps sun gear'bore 211 and Ibore 283 overlaps sun gear bore 216. Differential pinions' 284 and 285 are rotat-ably mounted on pins 286 and 281 (Figures 2 and 5) mounted on the indicator wheel 214. When sun gears 216 and 211 and the indicator wheel 214 are in assemibled relationship, the differential pinions 284 and 285, which mesh at the point bores 282 and 283 (Figure 3) overlap, mesh with sun gears 218 and 219 (Figures 1 and 5'), respectively.

Units are fed into spur gears 28!! and 28l by a feeding gear 256 and a similar gear (not shown) in meshing engagement with gear 280 which turn in thesaine direction during feeding. In order that the totalizing mechanism accurately total the sums fed into it, it is necessary that the units of movement fed into it from the feeding gears be comprised of an equal number of gear teeth. In the present embodiment a movement of five teeth of either of the feeding gears is the equivalent of one unit and the periphery of the indicator wheel carries the ten digits from zero to nine on its surface equidistantly spaced with respect to each other. When feeding gear 256 moves a distance of five teeth, it acts through spur gear 281 to drive sun gear 219 a distance of four teeth as spur gear 28! has twenty-five teeth and sun gear 219 has twenty teeth. If feeding gear 400 is stationary, because of the action of the differential, indicator wheel 214 is turned-adistance equivalent to two of the teeth of sun gear21'9 or onetenth of a revolution. As a complete revolution of wheel 214 amounts to ten units, the result .is that wheel 214 is moved a distance of. one ,unit. Accordingly, each time feeding gear 256 or feeding gear 400 moves a distanceoi-five teeth, then wheel 214 is moved a distance of; one. unit.

If units are being fed into the indicator wheel from both feeding gears, then ,both sun gears 218 and 219 are turned inthe same direction. a distance of four teeth for each unit fed into them. This locks the differential pinions with respect to each other and with respect to their respective sun gears with the result that wheel 214 is turned a distance equivalent to; four teeth of a. sun gear or two units. Thus whenever both gears are feeding units into the indicator'wheel, theiindicator wheel is moved a. distance equivalent .to. the total of the units fed into it. Furthermore, the timing of the feeding of unitsxby the feeding gears into the totalizing mechanism. can vary because of thed-ifferential and thus, for example, feeding gear 40!] may be one-third the way through feeding a unit into wheel 214 .when feeding gear 256-begins=feeding itsunit inand nevertheless wheel 214 will accurately record both units.

If the totalizing mechanism forms a part of a gear train in a computing machine, then the totalizing member may be ,provided with gear teeth on its periphery instead of carrying-digits from zero to nine thereon. If the Wheel carries digits, it is desirable to keep track of'the revolutions of the indicator wheel andto thus record the total amount fed'into the indicator wheel. To accomplishthis, the-indicator wheel 214 may be provided with a pair of Geneva transfer teeth 294 (Figure-2) which turn a Geneva transfer pinion 289 adistance of ,two teeth or one-quarter of a revolutioneachtime indicator wheel 214 makes .a revolution. vA gear 380, connected, to transfer pinion 289 is preferably geared to feed ten units into suitable'registeringmechanism, generally indicated atifll, each time pinion 289 makes one-quarter of a revolution. Thus an accurate record of the units fed; into the, indicator wheelmay be, kept. The indicatorwheel 214 is preferably mounted in a housing H;having a window 295 through which only onedigit on the wheel is visible-,at one time. Thispermits reading of theunits which have not-been transferred to theregisteringmechanism :by the transfer pinion, 289. The transfer of ten units to the registering -mechanism is so timed that it takes place each time the digit visible through window 295 changes fromnineto zero.

Thus it will be seen that efficient and, practical totalizing mechanism is shown and described which accurately totals units fed into it from two. different sources. Furthermore, this-mechanism is so constructed that ittotals units fed into it from either or bothsources operating either singly or in unison without, regard for the. timing 4 of the feeding of units by either source. Thus it will be clear that the objects hereinabove mentioned as well as many others have been successfully accomplished.

As many possible embodiments may be made of the above invention allv withoutdepa-rting from the scope of the invention it is to be understood that all matter hereinbefore set forth, or shown ,in the accompanying drawings, is to be interpreted as illustrative and not in a limiting sense.

. ably mounted on said wheel in meshing relation with respect to each other, a pair of sun gears of the same size rotatably mounted on said shaft, each :ofsaid sun gears meshing with one of said differential pinions, separate gear means of the same size for driving eachof .said sun gearscin the samedirection, each of said gear. means being adapted to feed; units into its-sun,-gear,all';units fed into said sun gears being equivalent in the amountof movement'produced in a.-sun gear, whereby said sun gears. acting throughsaid differential pinions cause said indicator wheel to rotate an amount equal tothe sum of all ,-units fed into it from both sun gears, and tens transfer means actuated by said indicator-wheel for. registering accumulated tens.

. 2. In totalizing mechanism, in combination an indicatorwheel rotatably mounted on ,a shaft, said indicator wheel having digits, from Otov 9 on its periphery, a pairof differentialpinions. rotatably mounted on said wheel in. meshing relation with respect to each other, a pair of sun gears of the same size rotatably mounted on said shaft, each of said sun gears meshing with one ofsaid differential pinions, separate means for feeding units into eachofsaidsun.gears, ,said means driving said sun gears in the samedirection all units fed into said-sun gearsbeingequivalent in the amount. of movement producedina sun gear, whereby said sun gears acting through said differential pinions cause said indicator wheel to rotate an amount. equaltothe, sum. of all units fed into it fr0m..both sun gears,..te.ns transfer means mounted onthe periphery of, said indicator wheel, a Genevatransfer pinion, said tens transfer means actuating said Genevatransfer pinion, and a register actuated by saidtransferpinion to register tens accumulatedbysaid indicator wheel.

FREDERICK Q. RAST.

REFERENCES CITED The following referencesvareof recordin the file of this patent:

UNITED STATES PATENTS Number Name Date ,.503,946 Cook .-Aug.. 29,.- 1893 1,469,932 Adams Oct. 9,; 19 23; FOREIGN PATENTS Number Country ,Date

102,105 Austria Dec. 28,1925 23,241 Great Britain 1906

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