US2450787A

US2450787A - fleming

Info

Publication number: US2450787A
Authority: US
Publication date: 1948-10-05
Anticipated expiration: 1965-10-05

Description

0a. 5, 194s. H.M.FLM1NG 2,450,787

CRAWL CARRY MECHANISM n Fld Jan. 9, 1947 2 Sheets-Sheet 2 lFIG. 2.

Inventor Jowwcd gjm?, E 6. D .M 5mn van Gttomeg Patented Oct. 5, 1948 Howard M. Fleming, West Orange, N. J5., assignerV to Monroe Calculating 'Machine Company, Grange, N. "J., a corporation.oiDelaware Application...lanuary i9, 1947,"Serial No; v'72.12004 4 Claims.

.Theinvention relates to calculating machines, and y.particularly to tens transfer or carry .devicesof .the crawl typ-e, such as disclosed: in the patent to Gardner, No. 1,828,189, datedfOcto- `ber'ZO,- 1931, an objectv of the invention being to eliminate .the coupling .between the nine tooth gear andthe ten tooth gear Lor the patent dis closure .andgear the nine tooth gear and the ten. tooth gear directly together, thereby reducing the. number of partsand reducing the backlash. inherentfin any type of such coupling, the reduction` of. backlash. being important in. this type of, gear, .particularly when used in connec tion. with totalizer mechanisms such yas vare used inA the Monroe. listing machine. yAnother object isto. so reduce. this .backlash that it shallnot `affect the accuracyof the total taking, the backlashy being normalized. inv each denominational order as thetotal. taking progresses successively from thelower denominational .orderto the, high.- er orders? one revolution .of the, coupling. used herein. (which is for the purpose of coupling together the totalizer vvheel1 gear of lower or.- der to the 'hu-b ci the eccentric related. to, the

totalizer Wheel gear of next. higher order), repi resenting a carry ,of onedigit tothe nexthigher. order, the vparts. .being always .normalized to .a common.. fixed position. during each .totaltaking Another Aobject isto reduce 10stA motion, simplify theconstruction, permitsinipler tooling and iacilitate manufacture. Other objects ,and advantages will appear hereinafter or Will be obvious.

The invention consists. in the .novel construen tion .and combinations of parts,.as hereinafter set forth. in the claims.

In. the accompanying drawings,

.-Fig.. 1V is'a vertical front to rear section of-a machine having the invention applied thereto.

Fig, 2` isa section on the.. line .2-2, Fig. 4.

Fig. 3 is` a side vievv of a totalizerunit ofthe machine;

Fig. 4 is` anendvievv of. the same.

.The crawl tens transfer means at .present usedin the Monroe listingA machine, for which this .invent-ion, is designed., is shownV in .principle inthe .patent to Gardner aforementioned,4 which patent and the prior. art named .therein .ismade partei this disclosure.

.In comparing this invention with that of the saidGardner patent, the action. and cooperation of, the parts remains unchangedand given reference-numeralsref-er to correspon-ding. parts, with certain exceptions. The crawl tens transfer is efiectedby a train of orbitalgearing of the kind termed fentocyclic in saidGardner patent.

The: patent to"Crossman,yNo l-932',01'3wis reiferr-ed to.. 'forv a. disclosure of' the machine: 'for which this invention is designed tofbexused;

Eachy denominational order; of- -the machine` is provided with a ,three armed: actuator lever'flfll', these levers being,fulcrumedonnashsatt 608. y.The forward arm of each lever SID :terminatesfina segmental;` registering; raclathe; rearward armhas ax1isting'typabar-.6H pivotedthereto and the upper armhas pivotal connect-ion. With. a differ-fentialstop bar y6l 5f. cooperating with abank of' digitale keys 12-i-5 to limi-t. the-.movementfioi the levervi.. Thev digital keys 2l fvvhichf have: been depressed: to; represent 'al valuafare latched in positiony with the bottoms; of their stems-lyingrin the path of movement oftherelated. stopy lugs of.,-theba1s iiaallowingsuch .bars to advance' 3,-.,distanc-e-r proportional to the valueA ofthe key; uponfopzerationtof the machine. Depression a digital key willfalso remove columnY latch.: 2 Ui from .the path. of movement ot its relatedbar L5; these' latches .preventing movementoiaistopbar andlever Eiilf column inwhich nokeyis depressed.

f .A. rock `shaft* rSill-f f is providedwith. camV z means 34:8- torfgoverning: the movement of-y aspring tenA sionedv rocker. frame E i6, mounted onA` shaft. .5.685 frame YSM5 carrying aseries. of.. dogs yGel-l normally: engaged by studs 6:53.y of theleversiit.. Asshait 3.0.1' is rotated f-orwardlyfirame Gti-5 willf be rocked, and any of. thelevers -liill` whichr havebeenleased. bythe depressiony `{if-'digital keys 4Willbe y allowed torotate under the influence ot `their spring1=-683 until` theyare stopped by the lugs of bar 64:5y contactingI with theesteinscithe key-s. Upon rearward rotationcof .shaft Bil-i, the. dogs El 1f `vvil-lfreturn theoperatedlevers itiis tenormaleposition.. Thisrexcursiomot .the levers 6m serves to register amounts .set inthekevboard upon one or. more. accumulator ,Gr..totalizer Wheel-s and torset. up 4a similar .amount on. `the .printing line-of the .typehars .7.

,For eachdenominationak orderof the machine, with exceptonof theunits order, `as will. vbe ex.-

.plainedthetota1izer. wheelshaft Alll-3 has retatN ably mounted thereon -a totalizer unit comprising the following. n

A. hub 430 upon which the pinion or actuator gear .4.1.2 is` rotatably mounted. sai-d` hubha-ving atene end thereof` anY eccentricSO; a floating tetalizer Wheel. gear 14,13 rotatably-mountednpon said eccentric through the mediumi oa-sleeve 4.113 and. .meshingvWi-t-h said actuator gear. 411;, the totalizer Wheel gear` having ten4 teeth andthe aactuator...gear.nine teeth,l and coupling. members located respectively at the opposite ends of said unit. These coupling members comprise for each totalizer unit a notched extension of the sleeve 413" related to the totalizer wheel gear of higher order, the notch being designated 41|', and a member 410 fast to the other end of said hub and having a long tooth 410 for slidable engagement with the notch 41| of the sleeve extension related to the totalizer wheel gear of next lower order, thereby providing coupling means between the gear of lower order and the hub of the eccentric related to the gear of next higher order.

The sleeve 413" is made fast to the related floating totalizer Awheel gear 413 by means of radial extensions 414 of the sleeve riveted at 414 to the totalizer wheel gear, although obviously the sleeve and the floating gear may be made` in one piece.

The locator arm 410 made fast to the related hub 430 and acting to hold the eccentric 430 of the units order from rotation is itself made fast to the xed framing or accumulator end plate M0, as shown in Fig. 2.

Thus the totalizer units are complete with respect to each denominational order, and it is not necessary to add a partial totalizer unit at either end of the series.

Since no carrying ever takes place in the units order, it is essential that the eccentric 430 of that order be held from rotation, and the member corresponding in position to the said member 410 and similarly made fast to the related hub 430, but lacking the tooth 410', is provided with a locator arm 410" utilized for this purpose.

Entocyclic gearing is known, as in the patent to Parsons, No. 601,164, dated March 22, 1898, wherein the totalizer wheel gear is an internal tooth gear and the actuator gear meshing therewith is loosely mounted upon an eccentric fast to the hub of the totalizer wheel gear (just the reverse of the present case), but this construction necessitates greater complication and results in more lost motion, the very things the applicants construction is designed to avoid.

In the tens carry operation, the eccentric of the units order being held stationary, the units actuator will rotate its actuator gear 412 and the units totalizer wheel gear 413', and the latter having made one complete rotation will through the tooth and notch engagement or coupling ber tween the units and tens orders rotate the hub 430 and eccentric 430' of the tens order once completely, thereby .bodily revolving the totalizer wheel gear 413 of the tens order in a circular path the radius of which is the degree of eccentricity of the eccentric 430 of the tens order relative to shaft 403, resulting in the advance of the totalizer wheel gear 413 of the tens order one step of movement to effect the carry. With this explanation the operation of the tens transfer devices from order to order will be obvious.

In taking a total or a sub-total, the corresponding key being depressed, the actuator levers 6|0 will be released one after another from right to left of the machine, each actuator lever being then driven by its spring to rotate the related totalizer wheel in a subtractive direction; zero stop members 6|3 being also released successively, each stop member 6|3 falling into the path of movement of the related stop of the totalizer wheel, the 0 stops of said wheels being constituted by the extensions 41| of the right angle flanges of the sleeves 413" beyond the peripheries of the totalizer wheels. Thus the totalizer wheel is held in zero registering position as the extension 41! of said ange contacts the related stop member 613.

In order to bring the higher order totalizer Wheel into proper position in relation to the zero stop member 613, the eccentric 430' controlled by the lower order totalizer wheel will lift the higher order totalizer wheel towards the zero stop memiber 6| 3 as the lower order totalizer wheel is brought to zero.

I claim:

1. In a register having a series of totalizer wheel gears, and differentially movable actuators therefor; crawl tens transfer devices between said gears comprising actuator gears, a hub upon which the related actuator gear is rotatably mounted, said hub having an eccentric, a floating gear constituted by a totalizer wheel gear rotatably mounted upon said eccentric and meshing with said actuator gear, the number of teeth of the actuator gear and the totalizer wheel gear having a ratio of nine to ten, and coupling means between the totalizer wheel gear of lower order and the hub of the eccentric related to the totalizer wheel gear of neX-t higher order.

2. In a register having a series of totalizer wheel gears, and differentially movable actuators therefor; crawl tens transfer devices between said gears comprising actua-tor gears, a hub upon which the related actuator gear is rotatably mounted, said hub having an eccentric, a floating gear constitu-ted by a totalizer wheel gear rotatably mounted upon said eccentric and meshing with the actuator gear, the number of teeth of the actuator gear and Ithe totalizer wheel gear having a ratio of nine to ten, and coupling means between the totalizer wheel gear of lower order and the hub of the eccentric related to the totalizer wheel gear of next higher order comprisingr a notched member fast to the totalizer wheel gear oilower order and a member fast to the hub of the eccentric related to the totalizer wheel gear of next higher order and having a long tooth slidably engaging the notch of the first named member.

3. In a register, having a series of totalizer wheel gears, and differentially movable actuators therefor; crawl tens transfer devices between said gears comprising actuator gears, a hub upon which the related actuator gear is rotatably mounted, said hub having an eccentric, a floating gear constituted by a totalizer wheel gear rotatably mounted upon said eccentric through the medium of a sleeve and meshing with the actuator gear, the number of teeth of the actua-tor gear and the totalizer gear having a ratio of nine to ten, and coupling means between the totalizer wheel gear of lower order and the hub of the eccentric related to the totalizer wheel gear of next higher order comprising a notched extension of the sleeve related to Ithe :totalizer gear of lower order and a member fast to the hub of the eccentric related to the totalizer gear of next higher order and having a long tooth slidably engaging the notch of the adjacent sleeve extension.

4. In a register having a series of totalizer wheel gears and diilerentially movable actuators therefor; crawl tens transfer devices between said gears comprising actuator gears, a hub upon which the related actuator gear is rotatably mounted, said hub having an eccentric, a floating gear constituted by a totalizer gear rotatably mounted upon said eccentric through the medium oi a sleeve and meshing with the actuator gear, the number of teeth of the actuator gear and of the totalizer gear having a ratio of nine -to ten,

t 5 6 and coupling means between the totalizer wheel gear of lower order and the hub of the eccentric REFERENCES CITED related to the gear of next higher order com- The following references are of record in the prsng a notched extension of the `sleeve related file 0f this Patent! to the gear of lower order and a member fast 5 UNITED STATES PATENTS to the hub of 4the eccentric related to the gear of next higher order and having a long tooth Number Name Date .slidably engaging the notch of the adjacent sleeve 601,164 Parsons Mal- 22, 1398 extension, said sleeve extension having a projec- 1,3%130 Gardner 00t- 20, 1931 ytion located beyond the periphery of the gear con- 10 sttuting a zero stop,

|HOWARD M. FLEMING.