US1119344A - Cash-register. - Google Patents

Description

A. J. H. BURNETT. CASH REGISTER.

APPLICATION FILED AUG.4, 1910.

1, 1 19,344, I Patented Dec. 1, 1914 4 SHEETS-SHEET 1- Yiinessfg/ I ventor w W J/rihurJ/ifiur/wit A. J. H. BURNETT.

CASH REGISTER.

APPLIOA'IIOH IILB AUG. 4. 1910.

1,1 19,344. Patented Dec. 1, 1914 Q x x Attorneys A. J. H. BURNETT.

CASH REGISTER.

APPLICATION FILED AUGA 910 1, 1 1 9,344. Patented Dec. 1, 1914.

SHEETS-8 BET 8.

Witnesses Inventor by Attorneys A. J. H. BURNETT.

CASH REGISTER.

APPLICATION FILED AUG.4, 1910, 1 ,1 1 9,344, Patented Dec. 1, 191i 4 SHEETS-SHEET 4.

Inventor ZZ h by V ttornpw Witnesses UNITED sTA'rns PATENT OFIETIOE.

ARTHUR JOHN HERBERT BURNETT, 0F WIMBLEDON PARK, ENGLAND, ASSIG-NGB. 0T? ONE-HALF TO ROBERT GOODSON, OF HOLBORN. LONDON, ENGLANID.

CA.SHREGISTER.

Specification cf Letters latent.

Patented Dec. 1, Mil 4.

Application filed. August 4, 1910. Serial No. 575,434.

To all 111/107 it m concern Be itv known that I, ARTHUR JOHN HER- BERT Brennan, :1 subject of the King of Great Britain, residing at 1 Stuart road, \Yimhicrlon Park, in the county of Surrey lillglllllil, haw. invented certain new and useful Improvements in (lash-Registers, 01 which the following is a specification.

This invention relates to mechanism for use in connection with calculating machines and the like. wherein the performance of the various arithmetical processes is effected from a ke vhoard by means of a. series of keys adapted to impart varying degrees of movement. to one or more indicating drums mounted within a casing in such a manner that the result of each calculation can be seen through an aperture or window in the casing of the apparatus.

The invention comprises an improved ar rangeinent of. carry on mechanism for causing the movement of one counting drum to impart a predetmanined amount of move ment to the next counting drum and from that drum to the succeeding drum and so on throughout the series of drums. the various movements hoing effected in a positive manner without an posi'loility of any of the drums occupying a position in which their various indications can become out of aline ni nt with each other or with the inspection aperture in the casing of the apparatus. in important feature of the carry on mocha nisin comprises a fixed cam interposed no tween each ol the various counting drums the said cam being of such a iornmtion'as to caus a niovahlv inruinted member carried l) one drum to engage during a portion of its revolution with the driving wheel eonnccte l with the succeeding drum and to iirpart a predetermined amount of mo e ment to the latter wlwreuyon the. said meniher is disengaged by the cam and travels around the same during the remaining 'portion of its rrvohition without imparting any further motion to the driving wheel.

The. invention also comprises a keyboard in uhich the keys are connected to the driv jug mechanism for actuating the counting drums through the intervention of a lost motion device by means of which each key receives the same amount of movement in effecting itsv lull stroke. the said lost motion being arranged to come into operation in advance of the efl'ective part of the stroke whereby in the event of one key receiving a complete stroke While the first n'ientioned key remains in. its partly depressed condition. the amount of movement transi'i'iittcd to any of the. counting drums by the clopros sion of the two keys will be the same th at which would have been transmitted by the. first mentioned key if the latter had rcoeived a full stroke in the first instance.

The invention further comprises impro ed means for compelling each of the key lovers to receive a full stroke before it can again return to its normal or top pos tion, a lock-- ing device for preventing the cash key of a cash till from being actuatetl hefore any of the calculating keys have been actuated, indicating niechanisn'i for showing the amount of a purchase in a. cash till, a zcroiriing device for returning all the counting drums to zero. indicating mechanism for indicating details upon a strip of paper in addition to indicating the ealeuiations upon the counting drums, and mechanism for rotating the counting drums in one direction or the other for the purpose of enahling the arithmetical processes of multiplication and subtraction to he pertornn-tl.

In order that the said invention may he clearly understood readily carried into effect I will describe the same with reference to the. aceomiiianving drawings which illustrate the invention as applied to a cash till.

Figure l, is a horizontal section of a rash till showing more particularly the t-. li;-.lir.ii and carrying on nicchansu: and mechanism for actuating the same. hi". :2, a scrtioiuil side elevation taken approximately on illlif l, 2. of .liig. 1. Fig. 2.4, is a detached view of the carry on mechanism drawn to an larged scale. Fig. "r, is a transverse section taken on line l, l, of I5. .lrig. fl. is a similar view looking in the opposite rlircotion. Fig. 6, is a section taken approx mately on line (5. 6, of Fig. 1, showing the racks together with their operating pioions. Fig. 7, an end elevation showing the full stroke mechanism and drawer I'Bltodlll mechanism. Fig. is :1V detached view ol the drawer releasing meri'ianism. Fig. 9, is a detached view of the indicating mechanism shown in Fig. "2. Fig. 10, is a detached \iew of a form of indicating mechanism which may be employed for recording drtails and totals upon a strip of paoer in $111 dition to indicating the calculations upon cirlit

the drum. Fig. ll is horizontal section showing a form of mechanism for returning the drums to zero. Fig. 12, is a transverse section taken approximately on. line i2, 112., of Fig. ll. Figs. 13. ll and. 1.5, are detached views of a portion of the scrolling mechanism. Fig. 10, is a detached View of a modification of the totalizing mechanism adapted to perform the arithmetical processes of multiplication and subtraction. Fig. 17. is a front elevation of a portion of the modi fied form of the totalizing mechanism. Fig. 18, is a transverse section taken on line 18, 18, of Fig. 17. and Fig. 1.9. is a s milar view taken on line 19, 9, of Fig. 17.

The totalizing mechanism for counting or adding purposes comprising a series of to tatahly mounted. drums A, A, A A which bear the required indications and correspond in number to the character of the coinage, or of the sums to be added. In the arrarugement shown, the drum A represents the pence drum, the drums A A? the shillings drums, and the drum A the pounds drum. but obviousl these drums could be arranged to indicate any other coinage by slightly modifying the mechanism by which they are actuated.

B. B, represent two sets of keys of which the set B directly controls the pence drum A and the set E the shillings drum A, the drums A A receiving their motion from the carry on. mechanism appertaining to the drum A. It is also obvious that any required number of sets of keys could be employed according to the particular coinage or sums to be dealt with. Each of the aforesaid drums is rotatably mounted upon a shaft a that extends across the machine. The first drum A 01 the series receives its motion from a rack 2 that is slidabl v' mounted in guides (I? carried by the end frame of the machine, and receives its mo tion from the keyboard B in the manner hereinafter lilesi'zrihed. Gearing with the rack 11' is a pinion a. rotatably mounted upon the shaft or. This pinion is rigidly connected to a disk a in the periphery of which is a depression (13. The dish a carries a spring controlled pawl a that is adapted to engage with a ratchet Wheel (2 arranged in. rigid connection with the first drum A, the said, :atchet Wheel being rigidly secured to a toothed wheel a forming part of the first drum A. Movahly mounted upon a shaft (1? extending across the machine behind the shaft a is a spring controlled lever a. carryinp at its free end a transversely arranged pm a. that enters the depression a? in the disk o as soon as the said disk is returned to its normal position after any of the keys of the set B have been actuated. When the pin is in this position it (Ilffr eyes with the teeth of the wheel a and prevents orerrunning of the drum A. The

indications upon the drum A are brought into and retained in alinement with those of the succeeding drums after a full stroke has been mparted to any of the operating levers ll for changing" the position of the drum. .ln the arrangement shown, this alining ()[NJZll lOll is elll-cted by i'neans of a spring controlled lever a" movably mounted upon a shaft 0 extending across the machine, the free endof such lever being suitably shaped to engage with. the toothed driving wheel a interposed between any two adjacent drums is the fixed carry on cam C. This cam is shaped in accordance with the amount of nwvcment that is to he imparted from one drum to the next succeeding drum, and in the eirample shown the cam between. the first and second drum is so arranged that one complete revolution of the first drum causes the second drum to advance to a sutllcient extent to bring the next succeeding indication thereon into View. For this purpose the cam is made in the form of a disk having a portion of its periphery cut away as shown. at (2 (Fig. at), for the rece tion of the above mentioned movab y mounted member. This member as shown comprises a pin a projecting from a lever c that pivoted to the first drum A, the said pin being of such a length as to extend across the aforesaid driving Wheel 0 of the second drum A. This driving wheel hereinafter referred to as the first carry on wheel is fixed to a sleeve projecting from the second drum. lVhcn the first drum has completed a predetermined portion of its movement. the pin c on the lever 0 enters one of the recesses between the teeth in the aforesaid. carry on Wheel and rotates the second drum A. until the rotation of the first drum causes the pin 0 to pass from the ent a 'ay portion in the carry on cam onto the circular peripheral portion thereof in which position it becomes disengaged with the carry on Wheel (1 and travels around such peripheral portion Without imparting further motion to the second drum. In order to insure that the pin 0 will follow the contour of the cut away portion c of the carry on cam C however quickly the ma chine may he operated. a spring controlled lever o is pivoted on the shaft a and is provided at its-free end with an extension 0 having an, inclined portion a (Fig. 5). This lever is also provided with a pin 6 that normally rests in a a in a. dish a and engages with the teeth oia Wheel a that is rigridl connected with the second drum. When the pin 1" comes into contact with the inclined portion 0. it lifts the lever (3- against the action of its spring as it passes between the said inclined poi tion and the cut away portion oi the cam. This movement of the lever also releases the pin 0 from the Wheel (L during the time that the pin 0' is actuating the carry on Wheel and allows the latter to he moved through the space of one tooth, whereupon the pin 0 again engages with the recess a in the disk a and locks the drum A in position.

In order to retain the indications on the second drum A in alinement with the indi cations on the first drum, a spring controlled lever a is pivoted upon the shaft (1) and is suitably shaped at its free end to engage with the teeth of the first carry on wheel c The mechanism for imparting motion directly to the second drum A from the sec. ond set of keys ll is practically a repetition of that which has been described with reference to the first drum A, ind comprises the rack o slidahly mounted in guides (1?, the pinion u. rotatably mounted upon the shaft a, the recessed disk 0. that carries the pawl o and the ratchet wheel a fixed to the ratchet wheel (1.. This whcel prevents over running of the drum A by reason of the transverse pin 0" normally taking up a position between the teeth of the ratchet wheel a, the said pin in this case being arranged to project from one side ot' the lever c.

The ca ry on mechanismv between the second and third drums A, X is the same as that which has been described with rcfcreuce to the lirst two drunu with the eption that the carry on cam is so shaped that ever complete revolution oi the drum A w ill in art halt a revolution to the drum A. For this purpose two diametrically opposite teeth. of th second carafe on wheel ar arranged to extend from the face of such wheel. and the carry on cam is so shaped that when the parts are in the podtion ahoivn in Fig. I}. t will allow the pin c" on the pivoted lercr to engage with osio of the aforesaid teeth audio remain in engagement with such tooth until the second drum has completed hall a revolution. The pin c now travels over a portion of the cam that is; or" a greater radius and is there,- h lifted out or engagement with the tooth whereupon the second drum can ontinue the second half of its revolution without imparting, any l'urthci motion to the c ond carry on wheel w until the pin r comes into c ntact with th second projecting tooth If and repeats the allure na -i ioued operation. th stop r on the l ver actin; n the. manner alime descrilcd with reference to the pin and also ra ns; to pir 'cllt the carry on wheel r from me running. lv varying the shape of the warm on cam an.

prmletermi:red portion oi a nevxilutiou can he imparted to the next werceding drum lrv o71e-compleie revolution oi the priwedingr drum. 7

The arrangement above (leacrr pcated between the third and fourth drums with the exception that the carry on cam (I is similarly shaped to the carry on cam shown in Fig. l, and the two projecting teeth are not employed on the third carry on wheel 0 l n each case the motion from one drum to the next succeeding drum is etlccted by the pin 0' on the lever carried by the preceding drum, the lixed car on cam (71 and the ca rry on wheel 0" ol' the succecding. drum. the levers il allecting' the alincment oi the indications on the drums, and the levers 2 insuring the pins 0 following the contour of their respective cams and also locking and preventing over running of the carry on wheels.

The two sets of keys, ll. B", liercinhetore referred to (Ul1'3l')ll. t. a number ol levers I) each of which is arranged to impart a predetermined amount of movement to its respectim drum. l lach oi the levers is pivoted intermediate o its length to a shalt Z! extending across the machine, the operating endof each lever heing provided with a key hearing the required indication. Each lever connected at, its oppo ite end h a pin and slot connection with a. rack 72 that is slidably mounted in guides 5". t extending acro s the frame of the machirua one set of racks ocing provided for (will set of kevs l3 B. Each set of racks is prr'n'idcd with a set of pinions I) rigidly lixed upon a shaft If that is supported in hearings 6* so as to occupy a, pmition adiaccnt to and in 'l'ront of its (.'.()ll0i-l')(llllliHQ: llach set oi pinions ifpro ville-d with a driving pinion or toothed wheel 7/ that {gears with th' l ori aid slid ald mounted driving ratk a. The teeth of each upright raclvi vary in niunlier according to the an'iount of i'iaw'en'ient that they are intended to impa t to their rcrspective counting drum. and each such rack together with its operating lever is returned to its normal position a'l'cr operation, l. v means of a spring f) connected to each operating lever and to a haft f extending: ac: the nniehine. \l'hr-n the racks" are in their normal position the lowermost tooth ol each rach reds: upon the. guide Zr. l n this position the teeth of all the racks are dis ngaged from their re.- spcctive pinions and a certain amount oi lost motion takes place (llll'lllil the upward trawl of each I'iHli lltffilt. it c-unmences it cil'ective strolie. the said lost motion in creasing as. the teeth upon each rarlt do rrcase in iumhcr. llv this means each key is compelled to receive the same amount of morcmcnt for (ll titlIJQ' its lull strolu. and in (r'lr'lvl to give an e 'iproxiinatclfv oxen tom-h to all the New. r-trori-r lting springs W" are advantage-aid liil l rclll in connection with those 1' ad u-vcrs which iilll ivr the greitier olMrtion ol' loz-zt motion.

Any suitable deviee may be employed for eoinpelling eneh of the levers to receive a full stroke before it can ngzain return to ire normal or top position. A preferrr-(l construction of meelmnism for eileeting this purpose roniprisw 2! looking hnr H for each set of racks, and means for retaining such lmr in spring contact with ratchet teeth fOl'lllC(l on eneh of the racks If", For etlecb ing this purpose each locking hm; (i mounted upon arms 1' that 'mjv'iect from a {rotntuhly mounted upon :1 eilmlt 9' extending arrow; the rear of the machine, any suitable form of springs being empioyed for causingthe bars G to bear against their respective of ranks. Erich looking lmr (r is provided with a rolesising device for temporarily withdrawing the bill out of eoni'net with the ratchet teeth during: a: portion of the rlosing ino z'nent oi the (hi form of (liBVH, for (fleeting this pnrporie. e'oniprisesn n 5; enirying an arm a and pivoted to one, and frame of the mnehi'nix and :1 releasing lover that is rihio pivoted to the said end frame and arrnnwd to engage with an arm :7 pZ'UlGCllYlQ from one end of the sleeve '1 li'pim depressing :my one of the l LfjJS, its Corresponding rnel; is mined into engage ment with re olive pinion.) whers'ui 'ion the set oz iiniom to vliieh sueh pinion helongs i rotated through a 3PlCllQti'lllllIKKl portion of n revolution. in m ron Anne with the nuinlzer of teeth upon the afor said l'illflf. Th s n'iovenieni is trnnhmitled lo the (hiring; pinion which eonseqnently muses the driving riiek u to travel toward the hack of the ninehine in opposition to a pull that is exerted upon gin-i1 reek l v chain a fll'ltl spring a. This chain is non neeted at it to i e incl: 0/ and to the afores oidnrrn (Wthronghthe stud a Theolore mid movement of the rackrotntese the pinion together with the recessed dish a. and piwl u" whieh mvels over the El h of the rnt het wheel 7* without iinpii any motion thereto After a romp te atroho has l ven im inir d to the aim and key, the dinner ii of the nah till can he opened in the ordinary nuinner by depressing the oash hey F. The lever f of this key' is eonnected to a wiring rontrolled hell ernnlc lever f pivoted to the hose of the llliltlllflU oi; the rear of tho drawer ll. (Figs. 3 and T) and when the said hey is depressed th vertnral arm of the hell erzml; lever engages with a spring controlled latch f (Fig 3? and dieen niges the same from a. stud f fixed to th s hone of the mzlohiz'ie, whm'eiipon the, drawer open; :iutonmtieully l'lirougl'i the in tervention of the spring that is usually employed for elleeting such purpose. l'pon el ming the drawer after it has lieen opened to its full extent, an flilll 2 that is pivoted in, one side thereof engages ith the profit-o tion a on the lover a and turns thelatter about its pivot, whereupon the cam g aetuates the releasing lever 9 to tempor :n'ily release the locking ha! i} from the ratchet teeth 9. As soon as the locking hm" .to its original position by the spring a and the cum is era-respondingly moved and allows the releasing imr (l to again errgzign with the ratchet teeth {I on the hnclte of the lllilia Z Every time the ma l; a" relum' to he original position, it living-'4 the as in the disk 1'1 nndernezilii elm trzinnra' ;r pin 11 which then engage iti: i ho teeth of the ratchet wheel a and grew-dis m ruining of the latter.

A suitable form of locking devil e for pro- \en ing the (ash key F "run: being; desprw-rd and the drawer E opened hofore any of the heys b have been rlCtlliIlilll, eomprii s a hell ernniderer H, (Fig. 63 and a cranked lull, ll that is pivoted to the upper of the eiuil te and extends neroe all of the key leiere The lever ll nvoked in 7 nor tion of the mnehine, frame in 'fiont or the rnek i1" and is nornndly mpported in the pointiorr shown liv it fixed stop 71 that en gage-h with a h. izontnl arm of such lever when all the keys are in [lit-ll normal or uppern. t position. hen the lever H is in this oofition, ite: vertiezil arm einnee; (ii-- reetlv o er the lever f of the Ei' ll horl? and prevent; the hatter from Win51 actuated MIMI} however no any o' he lov s 5: ore. perntrdl the cranked lJf-ll :l infill it eouuw into eontnrt nine lu imntfil min of the lever H and turn, the rrtiea} Ml'fi thereof out of :dinenu with {h i xer in indicating drum J for ezi'eh ""(i kevs B ll. lilarh drum hears the l'li lil l indie: Lions and is rotntnhly mounted egion bhufl j extending aeross the top or ill); machine, am of the said. indieatiom lining: eapnhle of being brought into View in or c-ordnnee with the amount of the purchase. In the drawings one sit-eh drum only in shown togetherwith the mechanism for w mating" the some, (Figs, and 9). Th moehnnisin comprises a pinion i that r: rigidly fixed noon the pinion :hnft Zr? and new; r-onliinimllv with a slidulrly.uionixrwl mole enpported in the glllfil .s 5*, in med abo e this rack is anotl'ier mail; j :sllil' ni einte i in a guide j and arranged to wntixnmily with a pinion that is fixed to the onion J. Also fixed to such ti on is a ratchet Wheel j, and pivotallv mounted on a vhat't that extends across tl "rear poriion of the machine is a lover g Jfl'lttkl at upper end with a spring 'ull'fu llsl pawl nhirh allows the ratrhet j to he :otateii in one direction when tin .6 (l pawi is in engagement with the her-l. The l wer eml f this lever extends into proximity to the base of the machine, and is atlaptetl to be ere fed hr a spring? 1 tin-. is lix'wl to the l of the drawer i). i ins-5i any of the keys are z'lepre'r sinl th a'nmnnt oi motion that is t lnsn'iitteil from sneh hers: to the pinion v t 7 raises the. lllt i'n illltl transom a (rorr 'epoiuiiiug- {lino-int motion to the pinion I with the result that the YQf'llliiQll indicationupon the drum ir brought into \iew. Upon depressi'ng'r? the rash key the drawer opens and. the lever j" assumes a position in which its pawl j i s disengaged with the ratchet wheel j the raehs being retained in their raised position through the interrention of the looking bar G, -On again closing the ilran'e", the spring i actuates the lever 1'0 enilinre the pawl f with the ratchet h ez i" i rein! rrtaiiiing the indicating drum in its ahoi'e iti-oneil position and the that has i actuated returns to its n rmal position i also? with the raelt Wh n mother he; depressed, if such key (leiwniination. a spring j 1e t oruin J to a position in the eon inn lower denominathe (imam will he brought into if a no sale key is operated to iin: bar H and the ehv to allow the low I to he depi n to open the he drum 3 is returned until a stop I p with a fixed stop j in ition a zero imlieation upon the rozaeht into view". This also hap nine to set of ween. (lfi} l(xfi('i i to another i Q arrangement rennin Hi infirii key of a jinatio'n aetnateil. b'ums A. A A in a tier by means ivun r-i can be returned l. and in the arrangeii. to '15. the. device K that actna ted I oeenpying a position in; of the nniehino. The reoi mils over the, top of each rat -nod levers (2 in proxl!'lli to ta l p er are formed upon the saii'i lover-' a- -l eazsh end to one arm of a boil aranlr no 1: that is suit ably pivoted to the machine frame. The other arm of the bell crank lever engage. with one arm of a lever 71: that pivotoil to the machine frame, the opposite arm of sneh lever being engaged by a cam .76 that is fol med upon the end of a slotted lever 12 This lever is connected o a pin 711 to a slid-ably mounted rack is that carries the :2 lozesaid zero kev K. Gearing: with the rook 7b" is a pinion It fixed to a clutch member Zrrmatahiy mounted upon a shaft k that is slitiahly and rotatably mounted in suitable hearings in the machine frame. 6 represents another e nieh membeithat is rigilly fixed upon the sha ft 75 and is normally retained in engagement with the clutch member M by a. spring Fixed upon the shaft i'r" are two pins In which normally orenpv a position out of a moment with the path that is described by two pins 71: iixeil on two toothed wheels 7c that rotatably mounted upon the shaft Ilav llach toothed Wheel Z, gears with a toothed wheel. is vthat is fixed to its respective counting rlruin and each wheel is is retained in aline ment with its respective wheel is or distanoe pieces If which are slotted where required for the passage of the pins it. Each of the above mentiol'ied eluirh members is formed with an inelined face as shown in l ne l1. l3 and 15, and with a 'n'ojeetion At" that is adapted to he engaged by a pi voted catch lever 76" having a recess Z1 to receive either of th projections in". To rezero, the Zero key K is depressed to its fnli extent. This movement imparts one and a, hall resolutions to the clutch member k the first half revolution moves the clutch member lo in an enciwise direction Without rotating such member and causes the two clutch members to assume the position indicated in Fig. 14. with the resnlt that the shaft is is moved in an endw' direction and brings the pins in into alinement with path described by the pins Filightly the ln'ojlfltion 7 on the eint f-h invinher 7n engages with the coriiesponrn Q pro" jeotion on the rlutoh member if? the first mentioned projection comes into ('ontaot with the, inclined end of the catch later 0 21m raises the latter clear of the projection on the clutch member 2'5". The projection on the first clutch member then engages with the projection on the seeontl clutch member and rotates the latter th ough one complete revolution with the result that the pins Z2 on the shaft is are brought into alinement with the toothed pins on the toothed wheels In which then return the r'ionnting, drums to zero. Previous to the effecting of this operation and during the initial movement of the zero kev K the cam 7:1 on the slotted lever is aetuates the releasinn bar K to engage with the tail pieces k of being automatically withdrawn from the teeth when required, a series of pinions rotated by such racks, a spring controlled-1ndicating drnm for each set of keys, a rack .with such pinion and arranged to receive motion from the first mentioned rack, a

ratchet wheel rigidly secured to each indicating dru'nn'a drawer in said cash till nor- -mal]y urged into open position, a pivoted lever provided with a pawlth'at occupies a position away from such ratchet wheel when the drawer of the cash till is open and means for bringin such pawl into engagement with the ratchet wheel when the drawer of the cash till is closed and for retaining such wheel in position until the lockin bar is released from the ratchet teeth 4 owned 011 the racks that are actuated g) the depression of any of the operating eys. a 3. In a machine of the character described, a reciprocating rack, keys associated with the rack for moving the'same, a pinion meshing with the rack, a disk rigid at one side of the pinion and having its edge flush with the outer edges of the teeth of the pinion, the disk further having at one side a notch in its edge-of a depth corresponding to the throat of the adjacent teeth,

"a counting drum,' a ratchet wheel fixed to 3 the counting drum concentric to the pinion,

in s ring pressed pawl carried by the pinion anc engaging the ratchet wheel, a spring controlled lever, a transversely extending pin on the outer end of the lever being normally urged by the latter against the edges 40 of the disk, and means controllable by the keys engaging the lever to raise the same from the disk and release the same upon a predetermined movement of the pinion.

4. In a calculating machine, sets of oper: ating keys, racks connected to the keys to be reciprocated thereby, a locking bar adapted for engagement with the teeth bf t racks, said bar also being adapted for automatic releasing from said teeth, a set of pinions meshing with the racks, a spring controlled indicating drum for each set of keys; drumoperating racks connected to the drums and meshing with a respective pinionin each of the said sets of pinions, a drum-pinion rigidly connected to each indicating drum, a drum-rack meshing with each of the drumpinions and adapted to receive motion from said first racks, a ratchet wheel rigid with each indicatin drum, a drawer in the niachine normally urged into open position, a pivoted cash lever, a pawl on the lever normally held from said ratchet wheels by said drawer when open, and means associated with the pawl for releasing the same when said drawerlis closed whereby the pawl engagesthe ratchet wheels and holds the same from movement until the locking bar re leases said first racks.

In testimony whereof I aflix my signature in presence of two witnesses.

ARTHUR JOHN HERBERT BURNETT. I I

Witnesses:

lVAL'rnn J. SKERTEN, .l/VILLIAM HENRY HARVEY.

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