US1181239A - Indicating mechanism. - Google Patents

Description

. MIDGLEY, je,

Mmmm; MECH/msm.

APPLCAHOH FILED AUG.21,19I2.

Mmm May 2, my:

T. MIDGLEY, III.

INDICTING MECHANISNI.

APPLICATION FILED AuG.2I. i912.

Patented May 2, 1916f IIs-1,239.

2 SHEETS-SHEET-Z.

willi/lll 'lA-1 1! UNiTED STATES PATENT oFFIoE.

THOMAS MIDGLEY, JR., 0F DAYTON, OHIO, ASSIGNOR TO THE NATIONAL CASH REG- ISTER COMPANY, 0F DAYTON, OHIO, A CORPORATION OF OHIO, (INCORPORATED INDICATING MECHANISM.

Specification 'of Letters Patent.

Application iled August 21, 1912. Serial No. 716,142.

1/ 'o MZ whom it may concern:

Be it known that I, T HoMi-is MinoLiiY, Jr., a. citizen of the United States'residing at Dayton, in the county of Montgomery and State ofy Ohio, have invented certain new and useful Improvements in Indicating Mechanism, of which I declare the following to be a full, clear, and exact descrip-v tion.

This .invention relates to key operated Cash registers and particularly to the differential mechanism of suchy machines and the connections for setting the indicators and actuating the counter therefrom.

Among the objects of the invention is to eliminate ,as far as possible the danger ot overthrow of the counter pinions and indicators in machines of this class; to provide in such machines for adjusting oscillatory indicator units from one position directly to any other without -irst returning them to a constant position: to provide a positive Stop for the indicators when the latter reach positions determined by the keys,

set will serve to insure the indicator for the set in which no key is depressed indicating '/.ero after the operation.

lrielv the above objects are accomplished iii the embodiment herein disclosed by mounting for cooperation with the keys of each deiioiiiinational set two frames stepped compleinentarily. corresponding steps of which cooperate with the respective keys when the latter are depressed to be moved ditl'erentiallv thereby. (')ne ot' the frames of each set is provided with gear teeth Jf'or actuating the corresponding counter pinion and this traine is elevated differentially by the keys in accordance with the numerals on the keys b v means ot' the stepped arrangement ol" the liaine ditl'erentially to operate the counter pinion. The other Atrame being stepped complementarily to the counter :ic--

tuating one is elevated the complement ot' the extent the lirst mentioned one is elevated. oth of these frames pivotally carry links the opposite ends ol' which have pins and through the positivev limiting means for the playing i'n arcuate slots in oscillatory disks toothed on a portion of their periphery to engage with pinions on their indicator units which are thus adjusted in accordance with the adjustment of the disks. lVhen the indicators are at zero the pins 011 the links are at the for vard ends ot' their arcuate slots and differential adjustment of the link connected with the counter actuating frame will, by its pin engaging the upper end of its slot in the disk, rotate the latter and the connected indicator in accordance with the movement of the frame which actuates the counter pinion. The pin on the other link being on the opposite side of the axis of the' disk, when elevated will move rearwardly and upwardly with respect to its slot until the desired adjustment ot' the disk results, when it is then in engagement with the upper end of its slot and positively prevents any further movement of the disk and its connected indicator. lVhen the indicator is to be adjusted from a lower to a higher position it is moved by the link connected with the counter actuating trame and the other link positively limits the movement of the disk while if the. indicator is to be adjusted from a higher to a lower position the movement is accomplished by the other link and frame which moves the indicator disk reverselv to proper position the first mentioned link limit-ing the reverse-movement of the disk and indicator. The lengths of the slots correspond to the distance the indicatoi' disks move in going from their zero to their nine positions, and at the moment an adjustment of an indicator is completed the pins on the links are always at the upper ends of their slots.

To provide for adjusting the indicators to zero when no key ot' their corresponding sets is depressed, a member taking the place of a zero key is provided for each set of keys, which is normally in the path of the ke)T coupler but is withdrawn Jfrom such path whenever a key of its set is depressed and coupled with the kev coupler. This member cooperates with the stepped trames so as to not move the counter actuating one, but to move the other traine nine steps which thus insures the return ot' the indicator and disk ot' onel set of keys to zero position whenever the machine is operated with no key of the set depressed.

With these and incidental objects in View, the invention consists in certain novel features of construction and combinations of parts, the essential elements of which are set forth in' appended claims, and a preferred form of embodiment of which is hereinafter described with reference to the drawings which accompany and form part of the specification.

Figure 1 is a vertical section through the machine taken on the irregular line a-a, Fig. 2, lookingin the direction of the arrows and showing the tens set of keys and the connections with their indicator and counter elements. Fig. '2 is a longitudinal section of the machine taken on the line 5 7), Fig. 1.

In the drawings 1 represents the end frames of the machine which are connected by longitudinal bars 2, 3 and 4 near the front, bottom, and rear portions of the frames respectively, and by longitudinal shafts 5 to 10 hereinafter more particularly referred to. Upon the shaft 5 are pivoted the key levers 11 through which the power for operating the machine is transmitted, and of which there are shown three sets of nine each. The rear portions of these keys normally rest on the bar 3 and their rear ends are notched at 13 and curved at 11 for cooperating' with a key coupler rod 15 carried by arms 1G pivoted at 17 to the inner sides of the end frames. Alongside the one key lever of each set is a link 18 also normally resting on the bar 3 and notched and curved at its rear end like the corresponding ends of the levers 11 and for cooperating with the key coupler rod 15. The links 18 do not extend forwardly as far as the key levers 11 but their forward ends are loosely mounted on rods 19, of which there is one for each set of keys. are supported at each end by arms 20, the lower ends of which are loose on the shaft 5. Springs 21 connect at their ends with these links and with the shaft 7 and normally hold the links rearward in the position shown.V The rods 19 normally lie against the forward sides of hooks Q2 projecting upward just above the shaft 5 from the keys 11 and whenever a key is depressed at its forward end, through its hook 22 it carries the rod 19 and the zero link 18 of its set forward so that the rear portion 11 of the link will clear the key coupler rod 15 and allow the latter to be raised without being lifted thereby. 1n case no key of a set is depressed to move the link 1B of that set of keys forward as just described, the

key coupler rod when rocked upward by en- ,sagement in the notch 13 of a key in another set which is depressed will, by

with the lower end of the curved 1l vpist above the notch 13 of the link, aise the latter which. lo co eratine" the These rods 19 stepped frames, returns the indicator unit of that set to indicate Zero in a manner hereinafter described.

The rear ends of the keys and links 1S cooperate with the complementarily stepped frames 23 and 2l larried at each end by arms Q5 and 2G loosely mounted'at their forward ends on the shaft 5. Projections 49 depend from the forward ends of these arms beneath the shafts 5 and normally bear against the rear side of the shaft G which thus serves to support the arms and frames in the normal position showin These frames have on their under sides ten graduated steps, one for each of the nine keys and one for the link 18 of each set. They are'stepped complementary to each other s that when a key or link is elevated against them from beneath, the sum of the extents of movements of the two frames, considering steps as a unit, will always equal nine. The frames 23 are the, ones which actuate the counter pinions and these arealways elevated distances corresponding to their de pressed keys, while the rear frames 21 are always elevated extents corresponding to the difference between the number of steps their corresponding frames 23 move and nine. The left or nine key of a set will move its frame 23 upwardly nine steps and the frame 21 none; the next or eight key moves the frame Q3 eight steps and frame 21 one; the seven key moves the frame 23 seven steps and the frame 24 two, and so on. The link 18 is at the right of the units key of a set and when elevated does not move the frame :23 at all but elevates the rear frame 21 nine`steps. lYhen the rear end of a key or link is completely elevated its upper side iS always in engagement with corresponding complementary steps on the lower sides of both of the frames 23 and 24.

From the above description it will appear that the frames Q3 are always elevated dit'- ferentially in accordance with the keys depressed. This dilferential movementis used to actuate the counter pinions in accordance with the keys depressed and to this end the left hand one of the arms 25 carrying thesi` frames have upward extensions 27 provided with gear teeth. and by rocking the counter 28 cariied by arms :29 pivoted on studs 30 of the machin(l frames downward to engage the counter pinions 31 with the `ear teeth of the extensions 2, holding' them in engagement while the frame 23 and arm 25 are being elevated and disengaging them before the return of the frames. the counter pinions will be actuated differentially in accordance with the keys depressed. The means for engaging the counter with its actuators as 'well as the transfer mechanism for it forms no part of the present invention and are common in the art and need not be described in. this a Liica'tion llti The frames 23'and 24 pivotally connect at 32 and 33 respectively with the lower ends of links 34 and 35. These links respectively have pins 36 and 37 at their upper ends which play in arcuate slots 38 and 39 of indicator actuating disks 40 loosely mounted on the shaft 9. These disks 40 have teeth 41 on a portion of their periphery meshing with pinions 42 rigid with oscillatory indicators" 43 carried by longitudinal shaft 10 whereby differential adjustment of the disks 40 similarly adjusts the indicators. The indicator actuating disks 40 also have notches 44 for coperating with'pa-wls 45 mounted upon shaft` 8. and normally held in locking engagement with the notches by springs 46 mounted between them and the longitudinal bar 4. The pawls 45 under tension of their' springs normally hold the disks and connected indicators in vadjusted position but can yield to permit adjustment of the indicators when the machine is operated.

The position of the indicators shown in the drawings is their zero position and that of the disks 40 -their normal position. With the indicators anddisks 40 in zeroposition pins 36 and 37 of the links rest against the forward ends of their Slots 38 and 39. Upon depression of a key the frame 23 will be elevatedto an extent dependent upon the key depressed and this frame. through its link 34 engaging the forward end of the forward slot 38 will swing the disk 40 clockwise to an extent corresponding to the amount of elevation of the frame 23 and set the connected indicator 43 accordingly. At the same time the link 35 connected with the rear frame 24 is with its frame elevated an extent equal to the complement of the movement of the other frame and link and this carries pin37 of this link, it being to the rear of the axis of the disk while the pin 3G of the link34 is to the front ofthe axle, upwardly and rearwardly in a direction reverse to the movement of the disk. This upward imovement of the link 35 is just suflicient to positively stop the disk from clockwise movement at the moment the upward movement of the links is concluded. The slots 38 and 39 are of just suiicient length topermit their pins having nine degrees of movement in them in passing from one end to the other. After the indicators and their actuating disks are adjusted the pawls 45 retain them in such adjustment while the links 34.

lower to higher positions, the links 34 in raising effect the movement by engaging the upper ends of the forward slots 38, the pins 37 on the links 35 serving then to positively limit their movement@ by. engaging the rear ends of their slots39 at the moment of `completionof the adjustment of the indicators, while when theindicators are to be adjusted from higher to lower positions they yare moved in the reverse direction by pins 37 on the links 35 the complement of the extents indicated'by depressed keys engaging the upper ends of the slots 39, the pins 36 on the links 34 in such cases serving to positively limit the movement of the actuating disks the moment "they reach positions according to the keys depressed. The arrangement of the slots, links, and actuating frames is such that whenever any adjustment of an indicator is completed the pins 3G and 37 of its actuating-links are always against the upper ends of their slots, and as these links are in opposite sides of the axis of the disks and are both moved upward, they .tend to impart movement to the diskin opposite directions with the result that no further movement of the disks takes place in either direction. f

It will be remembered that there are but nine keys'in a set, but 'that an additional link 18 is provided which is elevated whenever the machine is operated and no key of its set depressed. This elevation of thelinks 18 does not'elevate its frame 23 and link 34 but elevates its frame 24 and link nine steps, which results in the complete elevation of the pin 37 in its slot 39'to positively return its indicator disk 40 counter-clockwise to carry its indicator to Zero if it had been left otherwise by the preceding operation.

Front and rear indicators are provided in the machine as shown, those indicating at the front appearing at'the left in Fig. 2,

while the three right hand ones in this figure are for` rear indication. The two outside indicators are for the hundreds denomination and are carried by the indicator shaft 10 which is rotated by a pinion 42 mounted on the shaft near its left hand end and meshing with the gear teeth 4l on the indicator actuating 'disk adjusted by the set of keys for the hundreds denomination. The shaft 10 loosely carries intermediate the units indicators a sleeve 47 which carries near its ends the front and rear indicators for the tens denomination. Adjacent the front indicator near the left hand end of this sleeve, the latter rigidly carries the pinion 42 engaging with the tens'denominations indicator actuating disk. Surrounding the sleeve 47 between'its indicators is still another sleeve 48 which carries at itsends the units indicators and adjacent the right one of these. is the pinion 42 meshing with the indicator actuating disk -for the'units`set of keys. By this construction both the front and rear indicators are similarly adjusted when the machine is operated to indicate both at the front and the rear, the amount entered in the counter.

To operate the machine the proper keys of the necessary denominational sets are slightly depressed to couple them with the key coupler by engaging their notches 13 over the `key coupler rod 15. The last key to be depressed is forced all the way down which, through the elevation of its rear end, completely raises the key coupler and through it those keys previously coupled with it by slight depression only. The depression of'a key in a set withdraws the zero link 18 lof that set from the path of the key coupler rod 15 to allow raising of the latter without aiiecting the Zero link. It no key in a set has been depressed the zero link 18 of the vset is left in rearniost position and elevation of the key coupler by depression of Aa key in another set will elevate such link.

The elevation of the rear ends of the keys and links raises the stepped frames, the counter actuating one always in direct proportion to the value of the depressed keys, and this upward movement of this frame :23 through the gear teeth on the extension Q7 accordingly actuates the counter. The frames Q3 and 2l through their links34- and 35 serve to set the indicator disks directly from one position to another, the former positively moving the disk to set `the indicator from lower to higher positions, and the latter positively moving the disks in the reverse direction when the indicators are moved from higher to lower positions. `When one of the links actually moves the indicator actuating disk the other moves suiiiciently to position its pin so that at the moment the first mentioned link completes its adjustment of the indicator disk `the pin of the other engages kwith the Yupper end of its slot in the disk and prevents further movement of the disk. The weight of the key coupler and the sets of frames is sufficient to lower them and the rear ends of the keys to restore the keysA to. operable position. i

Thilo the `form of mechanism herein shown and-described is admirably adapted to fulfil the objects primarily stated, it is to be understood that it is not intended to confine the invention to the one forni of embodiment herein shown and described. as it is susceptible of embodiment in various torms. all coming w-ithin the scope ot the claims which follow.

"What is claimed is:

1. In a cash register, the combination of a totalizer; actuators therefor, indicators. actuators for the indicators, the totalizer actuators and indicator actuators performand totalizer.

2.'In a cash register, the combination of a counter pinion; a differentially movable frame for. actuating the same; an indicator connection from the frame to the indicator whereby the former may set the latter; andv differentially movable means for positively preventing further movement of the indicator after it reaches the position corresponding to the differential movement of the frame. y

3. In a machine of the class described, the combination ot a counter a differentially movable counter actuating frame; a second differentially movable traine; means for actuating the frames to complementary extents; an indicator; and connections between the frames and the indicator whereby the latter is adjusted to indicate the extent of movement of the counter actuating frame by.moving directly from one position vto another. f

In a machine of the class described, the combination of a plurality of movable frames; a series of keys for actuating the same; steps on the frames,complementarily arranged for cooperating with corresponding keys for actuation to complementary extents thereby; an indicator; and connections whereby the movement of the frames can adjust the indicator in opposite directions. the direction of movement of the indicator by the connections being dependent upon the position of the indicator before the beginning of the operation.

5. In a machine of the class described, the combination of a plurality of complementarily stepped movable frames; a series of operating means for the frames for engaging complementary steps on them to actuate the frames diiierentially; an indicator actuating disk; and oppositely effective one way driving connections between the frames and the disk for adjusting the indicator from one position directly to another.

6. In a machine of the class described, the combination of a plurality of complementarily stepped movable frames; a series ot operating means for the frames for engaging complementary steps on them to actuatc the frames diiferentially: an indicator actuating disk having a plurality of arcuate llt? 7. lIn a machine of the class described, the combination of a diiierentially movable frame; operating mechanism therefor; a second frame adapted to be moved by the operating mechanism to extents complementary to the movements .of the first mentioned frame; indicating mechanism; and connections between the frames and the indicating mechanism whereby the irst mentioned frame adjusts the indicator from'lower to higher positionsl and the -last lmentioned frame adjusts it from higher to lower indicating positions. 8. In a machine of the class described, the j combination of a differentially movable frame; operating mechanism therefor; a second frame adapted to be moved by the operating mechanism to extents complementary to movements of the irst mentioned frame; and connections whereby either the rst mentioned frame adjusts the indicator from lower to higher position to indicate the extentof movement of the frame, or the second mentioned frame adjusts the indicator from higher to lower position to indicate the extent of movement of the iirst mentioned frame.

9. In a machine of the class described, the

combination of a 'diferentially movable frame; operating mechanism therefor; a second frame adapted to be moved by the operating mechanism to extents complementary to movements of the first mentioned frame;l an indicator; an actuating disk therefor; connections between the first mentioned frame and the indicator actuating disk for moving the latter in one direction; and connections between the other frame and the indicator disk for moving said disk in the opposite direction, the effectivity of the connections upon the disk being determined by the-,position of the disk at the beginning v of the operation and the position it is to occupy at the end ofan operation.

10. -In a machine of the class described, the combination of an accounting mechanism; a plurality of devices connected thereto for operating the accounting mechanism in opposite directions effective on the accounting mechanism in one direction of their movement only; and means for moving the devices to complementary extents to adjust the accounting mechanism from one position directly to another.

11. In a machine -of the class described, the combination of an accounting mechanism; a plurality of devices connected thereto for operating the accounting mechanism in opposite directions effective on the accounting mechanism in one direction of their movement only; and means for moving the devices to complementary extents to adjust the accounting'mechanism from one position directly to another, the device not serving to adjust the accounting mechanism nections between the devices and the accounting mechanism whereby either may adjust the accounting mechanism to a position corresponding to the depressed key while the other serves as a stop to prevent .movement of the accounting mechanism beyond its desired position.

13. In a mechanism of `the class described, the combination of accounting mechanism; manipulative mechanism; and a plurality of devices having a normal position and connecting said mechanisms for yactuating the former from the latter and for limiting such actuation, one of the devices serving to limit the actuation of the accounting mechanism when thel other is actuating it.

14. In a machine of the class described, the combination of an actuating disk for accounting mechanism having a plurality of arcuate slots therein; pins mounted in the slots and normally separated angularly about the axis of the disk by a constant angle; and means for changing the angular distance between the pins to set the accounting mechanism.

15. In a machine of the class described, the combination of a plurality of indicators; a plurality of sets of keys for operating the same; a key coupler and connections whereby it is coupled with the keys by a slight depression of the latter; a zero bar for each set normally coupled with the key coupler whereby operation of the key coupler by a key of another setwill operate the zero bar tol restore its indicator to zero; and means whereby the depression of a key of a set disconnects the zero bar of such set from the key coupler. i

16. In a. machine of the 'class described, the combination of a main operating mechanism an indicator; aseries ofv keys for adjusting the same; a member normally in position to restore the indicator to zero upon the operation of the operating mechanism; and means whereby the member is withdrawn from normal position when the indicator is to be adjusted by the depres.v

sion of a key in the series.

, angular extent; and means for changing the` the combination of a main operating mechanism, an indicator; a series of keys for controlling the adjustment of the same to indicate other than Zero; connections whereby the indicator is adjustedto indicate zero when the operating mechanism is operated without the depression ot' a key; and means whereby the connections are disabled when a key is depressed and the indicator adjusted in accordance with it.

19. In a machine ot' the class described, the combination ot a plurality of indicators; a plurality of sets of keys for adjusting the indicators to indicate other than zero; means for adjusting the indicators to zero when the machine is operated without the depression ot' a key in their corresponding set; and means whereby the depression of a key to set anindicator disables the last mentioned means for that indicator.

20. In an indicating mechanism, the combination ot' an indicator; means for adjusting the latter from one position directly to another; a series of keys for differentially operating said means; connections for operating said means' to adjust the indicator to zero position when the machine is operated without the depression of a key; and

projections carried by the keys for disabling the connections when the key is depressed.

21. Iny an indicating mechanism, the conibination of an indicator actuating disk; a plurality ot links connected thereto for rotating the disk in either direction to adjust the latter from one position directly to another; a series of keys'for moving the links diiferentially and complementary to each other; a zero bar adapted to operate the links to restore the indicator disk to zero when the machine is operated Wit-hout the depression of a key; a pivotally supported rod connected with-the zero bar and passing overthe keys; and projections on the keys 'for engaging. the rod when a key is depressed for moving the bar to render it inoperative when the indicator is to be` adjusted by the depression. of a key.

22. In an indicating mechanism, the combination of an oscillatory indicator actuating disk provided with arcuate slots; a plurality of links having pins Working in said slots and normally separated a constant angular distance between the ,pins to a constant extent at each operation to adjust the indicator, the linal adjustment of the same depending upon the relative extents of movement of thepins on the links.

23. In an indicating mechanism, the combination of an indicator actuating disk; a plurality of` links connected therewith but movable relatively. thereto; and key controlled means for changing to a constant -extent at each operation the angular distance between the points of connection of the links with the disk, the construction being such that the links are given various relative extents of movement d ependent upon the keys depressed, to determine the final adjustment ot' the indicator and the direction in which it lnoves in its adjustment.

2l. In a cash register', the combination of a counter pinion; a differentially movable frame for actuating the same; an indicator; connections from the frame to the indicator whereby the former may set the latter; and differentially adjustable means for positively limiting the adjusting movement ot' the indicator when it reaches the position corresponding to the differential movement of the frame.

25. In an accounting machine, the combination of a series of keys; an indicator; and a plurality of connections between the keys and the indicator, movable differentially and independently by the keys, for adjusting the indicator and limiting its movement. the construction being suoli that when either of the connections adjusts the indicator the other limits the movement of the latter'.

26. In a machine of the class described, the combination of an accounting mechanism: a series of keys; a plurality of devices movable differentially by the keys and complementary toeach other; pin and slot connections between the devices and the accounting mechanism whereby either may adjust the accounting mechanism to a position corresponding to the depressed key while the other serves as a stop to prevent movement beyond its desired position, the pin and slot connections being constructed to permit the differentially movable devices to be returned to normal position; and means 'for locking the accounting device in adjusted positions.

27. In a machine of the class described, the combination of an actuating disk 'for accounting mechanism and having a plurality of guiding surfaces; pins mounted in coperative relationship with said guiding surfaces; links carrying said pins and nora mally nearly parallel; and means for bodily 'them and then moving the same differentially; and connections ybetween the frames and the indicator for moving thelatter.

29. In a machine of the class described,

the combination with a plurality of complementary stepped movable ramesgan indicator; operating means for engaging all of said frames and moving them difierentially while in engagement therewith; an indicator actuating disk; and connections between the'frames and the disk for adjusting the indicator from one position directly to another upon movement of said frame.

30. In a machine of the class described, the combination with an indicator, of a bank of keys for each indicator, a pair of elements for each bank of keys arranged to be given complementary differential movements by operations of the keys, connections whereby the movement of one element will differentially drive the indicator and the movement of the other element will differentially move a stop for the indicator.

31. In a machine of the class described, the combination of a plurality of complementa rily stepped movable frames, a. series of operating devices arranged to engage complementary steps on the frame to operate both frames differentially, an indicator, an indicator actuator, and oppositely eiiective connections between the frame and the actuator, one connection moving the indicator directly lfrom its position of previous adjustment to the desired position and the other ypreventing movement of the indicator past said desired position.

32. In a cash register, the combination with an accounting element, and dual means operable singly to actuate said accounting element, said dual means being so constructed that each of said means will act to limit the actuation of said element when the other of said means is actuating said element.

In a cash register, the combination with an accounting element, and dual means operable singly to actuate differentially said accounting element, said dual means being so constructed that either o'f said means will act to limit theaetuation of said clement when the other of said means is actuating said element.

34. In a machine of the class described, the combination with a plurality of indicators, of a set of depressible keys for each indicator, a pair of 'elements for each set of keys arranged to be given complementary ditferential movements by operations of the keys, connections whereby said movements will differentially move the indicator in either direction and positively limit the eX- tent of movement, and other connections whereby depressing a key in any one set willI position the indicators of the other sets at Zero.

35. In a machine of the class described, the combination with a plurality of indicators, of a `set of keys for each indicator, means for coupling together for simultaneous operation keys of different sets, said means being given an invariable extent of movement at each operation, and means whereby said coupling means will vposition at Zero the indicators for the sets in which no key has been connected to the coupler.

36. In a machine of the class described, the combination with a plurality of indicators, of a bank of keys for each indicator, a pair of elements for each bank of keys arranged to be given complementary differential movements by operations of keys in the bank, connections between each element and the indicator whereby the movement of one element will diiierentially move the indicator and the movement of the other element will differentially move a stop for the indicator, an element given an invariable extent of movement when the machine is operated, and means automatically coupling one of the aforesaid elements to the invariably moved yelement when no key in a bank is depressed whereby to set the indicator for that bank at zero.

37. In a cash register, the combination of a totalizer, actuating mechanism therefor, indicator actuating mechanism, and connections whereby the indicator actuating mechanism prevents both overthrow and rebound of the totalizer actuating mechanism and totalizer.

38. In a cash register, the combination of a totalizer, actuating mechanism therefor, indicator actuating mechanism, and oppositely effective connections whereby the indicator' actuating mechanism prevents both overthrow and rebound of the totalizer actuating mechanism and totalizer.

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

THOMAS MIDGLEY, JR.

Witnesses:

VILLIAM A. LINN, CARL Bauer.

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