US2010300A - Cash register - Google Patents

Description

1935- c. w. GREEN 2,910,300

I CASH REGISTER Original Filed April 13, 1927 3 Sheets-Sheet l Aug. 6,1935. C REEN 2,010,300

CASH REGISTER Original Filed April 15, 1927 3 Sheets-Sheet 2 (bar/es H). Green,

". 6, 1935 c. w. GREEN 2,019,300

CASH REGI STER Original Filed April 13, 1927 5 sheets-Sheet 5 noen ioz Char/e! U1 Greets 41% ECJMM? attounuyi/ Patented Aug. 6, 1935 UNITED STATES PATENT OFFICE CASH REGISTER of Maryland Original application April 13, 1927, Serial No. 183,392. Divided and this application June 30,

1928, Serial No. 289,348

7 Claims.

I'his application is a division of my co-pending application, Serial Number 183,392, filed April 13, 1927 (now Patent No. 1,874,285, issued on August 30, 1932), to which reference may be had for a more complete description of the cash register to which the present invention has been applied. While the improvements set forth in this appli cation are shown in conjunction with a particular type of cash register as illustrated in the parent application their utility is by no means limited to this specific embodiment. The improvements are of such a nature that they may be applied in various modifications to many other types of cash registers and accounting maclnnes.

A broad object of the present invention is to provide an improved transfer or carrying mechanism whereby, as the result of the completion of a rotation of any totalizer wheel of a lower order, the wheel of next higher order will be turned through one step.

A more specific object is the provision of an improved mechanism for placing normally ineffective transfer pawls in condition for carrying; as well as to prlovide a novel and efiicient means for actuating such pawls to impart carrying movement to the appropriate totalizer wheels.

A further object of the invention consists in providing for resetting to zero of the totalizer by turning the totelizer wheels in the same direction as that in which they are rotated for addition; with provisions for restoring to normal position the transfer devices that are tripped by the resetting of said wheels.

An additional object is to provide a novel and effective uiding means for certain transfer elements; which guiding means, moreover, is operable to effect restoration of said elements to normal. during resetting operations.

Another object is the provision of an improved means for positively preventing over-carrying of the totalizer wheels.

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

Of said drawings:

Fig. l. is a top planview of the machine of my parent application aforesaid, in connection with which. the present invention is illustrated; the cabinet of said machine being cut away to show the arrangement of the mechanism located within.

Fig. 2 is a vertical sectional view of the machine taken on line 2-2 of Fig. 1. This view shows particularly the differential and totalizing devices and the means whereby they can be brought into and out of cooperative relationship.

Fig. 3 is a top plan view of a number of the elements associated with the resetting mechanism.

Fig. 4 is a view in side elevation of a portion of the mechanism utilized in connection with the resetting operations.

Fig. 5 is a vertical sectional view of the totalizer showing the transfer mechanism.

Fig. 6 is a top plan view showing the relation P between the transfer devices and the denominational elements of the totalizer.

Fig. '7 is a view in side elevation showing the position of the transfer elements after the totalizer wheels have been brought to zero.

Fig. 8 is a detail view of certain parts which serve to restore the transfer pawls during resetting.

Fig. 9 is a detail view of the lowest order transfer operating cam.

Keys, key coupler, and full stroke device Described in general terms the illustrative machine comprises keys 32 divided into groups (Figs. 1 and 2) one group for each denominational order, such as, for example, units, dimes and dollars. Obviously, more amount keys could be provided if more groups or higher denominational orders were desired, so as to increase the capacity of the machine. A special key 3! is also provided and is designated as the No sale key, the primary function of which is to release the cash drawer for the making of change.

As shown in Figs. 1 and 2, the amount keys 32 and the No sale key 3| are pivoted upon a shaft 33 supported by the side plates 20 and 2i. In order to provide a suitable bearing for the shaft 33, since the side plates are of relatively thin material, these plates 20 and 21 are punched and drawn outwardly at the proper points so as to form portions 34 (Fig. 1) in the form of collars, the internal bore being substantially that of the diameter of the key supporting shaft 33. By the construction just described suitable journalling points are provided for the said support shaft. Lateral movement of the shaft 33 is prevented by the cabinet 21, the sides of which are adjacent the ends of said shaft.

The amount keys 32 and No sale key 3|, which carry at their respective outward ends or V key coupler 39. The key coupler is pivotally sup? ported by means of plates iii and 4! .(Figs. 1 and 2) attached to the key coupler and which are suitably apertured to receive a transverse shaft 42 located approximately .above the -afore.-.

mentioned shaft 33. Said shaft 42 is supported by the side plates 2!! and 2! in a manner similar to the shaft 33. It will be obvious that wheiathe forward ends of the keys are depressed the key- To insure a complete performance of the started registration before a second operation can subsequently be effected, any suitable full-stroke mechanism may be employed (such, for example, as that disclosed in my parent application hereinbejfore referred to). Various fullastroke devices are well-known inrthfl art'and need not be here discussed. Difierential and totalieer device 7 impart to the associated diiferential frame vary- I ing degrees of movement, depending upon the values represented by said keys. Secured to each frame isa segmental rack i! adapted to operate an associated totalizer element of corresponding denomination. It will be understood,:therefore, that a differential frame .48 and a segment .58 are associated with each group of nine keys 32 of each decimal order.

The registering mechanism, whereby items determinedby the keys are accumulated to furnish a total of the amounts entered, is in the main carried by a framecomp-iising side plates 61 and 58 (Figs'l, 2, 5 and 6) which are tied together at their rear ends by a cross rod 59 and bifurcated at their lower portions to engage the shaft 52. The frame is held in position by ashaftlii journalled in the side frames 25 and 2! and passing through circular. apertures formed in-each of the side members .51 and 68.

The totalizer proper comprises a series of registering wheels 75 loosely mounted on a shaft 14. Attached to the wheels corresponding with the segments 5e are pinions it adapted to mesh with said segments. Included in the series of wheels are a number of wheels of higher orderthan The shaft iii is carried by awframe whicli consists-of side members H 'and'li integrally connected by a cross member 13 and pivoted within the stationary frame ill, 68 by short pins T! (Fig. 6) passing through the side members 6'! and 68 and into the side members H and 72 of the totalizer frame. These are the pivots about which the totalizer frame is adapted to be rocked during the initial depression of the keys so that the totalizer pinions 16 will be immediately rocked into engagement with the actuating segments 59,

the latter being then differentially operated under control of the keys so that at the extreme endiof the depression of the keys a corresponding amount will have been entered into the totalizer.

Upon the return movement of the keys the totalizer pinions'will be disengaged from the segments, thus permitting the latter to return to their normal positions without affecting the entry made upon the totalizer. The mechanism for effecting the above-mentioned rocking of the totalizer frame will now be described.

iliotalizer engaging mechanism Loosely mounted .upon the shaft 52 and slotted so as to engage the key coupler 39 is a segment plate "i8 (Figs. -1, 2 and 6) which extends vertically in a plane adjacent the side frame 57. The segment plate at its upper end is provided with bent over lugs is and 88 and carries a supporting collar 8i. Pivotally mounted by means of a pin fitting in the collar 35 is a plate 82 provided with stop shoulders 83 and B l which are adapted tocooperate with the lug iii. A switching cam plate 35 is attached to the plate d2 by suitable means such as a pair of rivets. A spring (Fig. 2) connected between the segment l8 and the plate 82 normally retains the parts in the position shown in the above figure. The shaft 14 mounted in the totalizer frame is adapted to be engaged by an open ended slot formed in a member 88 which is pivoted at 39 to the supporting frame member iii; The rearward end of the member 8% carries a pin 86 normally resting upon the lug 88 and the member 38 is also provided with a pair of stop shoulders 91 and 92 adapted to cooperate with a pin 93 carried by the frame member 67.

In the position shown in the drawings (Fig. 2) it will be noted that the totalizer frame is normally locked and any downward movement, accidental or intentional, will be prevented by the cooperation of the pin 98 with the lug 80 while upward movement is prevented by the shoulder 92 engaging the pin 93. During the operation of the machine the key coupler 39 will rock the plate 18 clockwise and the initial movement will permit the totalizer'frame to be rocked by the member 88 so that the totalizer pinions 76 may engage their related segmental racks since at this time the pin 99 will pass between an inclined portion 9 of the lug 8t and the adjacent edge of the switching cam plate 85. Continued rocking of. the plate 758 Will positively cam the totalizer frame by the action of cam plate .35 to carry the totalizer elements into their lower or engaged position, this action being assisted by the weight of the totalizer frame. During the continued clockwise movement of the plate 78 (Fig. 2) the segments will be moved differentially in the manner hereinbefore described, and during this time the pin 95 will contact with the underside of the cam plate 35130 hold the totalizer frame positively locked against upward movement, thus insuring engagement of the totalizer pinions with the racks throughout the down-stroke of the keys-even though the keys should be operated quickly and violently. When the plate I8 has rocked far enough to carry the pivot point of the cam 85 past the pin 98 the cam will rock clockwise against the tension of the spring 86 without disturbing the position of the pin. At a certain point in the operation the pin 98 will be completely disengaged from the cam plate 85 thus permitting the spring 86 to again rock the plate to its normal position. At substantially the same time the pin 88 will pass beneath the lug 19 to still prevent any movement of the pin and plate 88. This condition is obtained at the extreme end of the down-stroke of the keys at which time the totalizer is still positively locked in the position in which the pinions are engaged with the segment racks.

At the beginning of the return movement of the plate I8, which is contemporaneous with the return stroke of the keys, the rearward camming edge of the cam plate 85 will cam the pin upwardly thus positively rocking the totalizer frame to disengage the pinions from the segment racks. During the remainder of the return movement of the segment I8 the pin 98 will ride over the upper edge of the cam which will guide the pin over the lug 88 until the pin again occupies the position shown in the drawings. It will be understood that the totalizer frame is also looked against movement during the return stroke of the keys.

In rapid operations of the machine there may be danger that the spring 86 will not act quickly in rocking cam plate 85 to insure the proper return of the pin 98 along the upper edge of the cam plate upon the return movement of the plate I8. To prevent misoperations which would result if the pin 90 did not describe the proper path under these circumstances the shoulder 84 of the plate 82 which carries the cam 85 is bent outwardly to cooperate with the pin 98 as the plate 18 reaches its extreme forward limit of movement so that if the spring 88 does not rock the plate 85 the pin contacting with the lug of shoulder 84 will positively force said plate 85 to the proper position. It should be noted that the pin 90 at this time is held down by the lug l9 and can, therefore, have a very positive action on the sloping overturned portion 84. The subsequent riding of the pin 90 over the rear beveled portion of cam plate 85 will thus always be insured. While this device is simple it is an effective and adequate remedy for misoperations which might occur without it.

Transfer mechanism The transfer mechanism employed for the wheels above the units order is of the type in which the several orders are independently and successively actuated and it is operated upon the return stroke of the keys at which time the totalizer pinions are out of mesh with their respective actuators.

Each totalizer wheel carries a transfer pin II5 (Figs. 5, 6, and 7) which is in the plane of an extension II6 of a transfer trip pawl II'I provided with a stepped shoulder II8. The trip pawls II! are urged in a counter-clockwise direction by springs I I6 shown in broken lines in Fig. '7. The transfer pawls I28 are urged counter-clockwise (Figs. 5 and 7) by coil springs I28 so that normally a lug I2I formed thereon rests upon the shoulder I I8. Each transfer pawl is pivotally mounted upon a related arm I22 all of which are journalled on a shaft I23 carried by the end portions I24 of the main spacing bar I24 which is securely fixed between the side plates II and 12 of the totalizer frame. Shaft I23 is in direct alignment with pivot pins I1. When a totalizer wheel of a lower order makes a complete revolution the pin I I5 will urge the trip pawl II'I forwardly thereby disengaging the lug I2I from the shoulder H8 and permitting the spring I28 to urge the transfer pawl I28 downward until the bottom edge of the transfer pawl rests upon the spacing bar I24. At this time the engaging end of the transfer pawl will be brought into operative egagement with a tooth of a ratchet wheel I25 (Fig. 7) attached to the next higher order wheel so that when the transfer pawl is moved rearwardly cooperation of the pawl with the ratchet wheel will advance this wheel to effect the necessary transfer. In so doing the transfer powl will also be raised due to the camming action of the next ratchet tooth so that the lug I2I will again rest upon the shoulder II8.

When a pawl Ill is tripped or forced forward by a transfer pin II5 as above described, the transfer pawl I28 will be released and will be drawn downward by 3119 coil springs 128, but if they should move downward too slowly or by any means become stuck in their elevated positions they are positively forced downward by pins I I II (Fig. 7) carried by the trip pawls and adapted to engage the upper edge of the transfer pawls.

The tail of the pawl I28 is bent to form a lug H8 which is adapted to cooperate with the forward edge of the related arm I22, and is provided for the purpose of preventing said pawl from being out of engagement with the ratchet teeth at the end of the extreme rearward travel of said pawl with the result that overthrow due to a too rapid transfer operation is prevented.

The upper edge of the transfer pawl I28 is preferably notched as at i288 '7) so that at the extreme end of the transfer operation the pin II]! will overlie the notch I288. This permits lug M9 to function as an overthrow preventer alone but if so desired the notch I208 and lug I I9 may be dispensed with so that pin I I'll coacting with the upper straight edge of the pawl I28 will prevent overthrow. In some instances it may be desired to use both the pin I I?! and lug IE9 to prevent overthrow.

The means whereby the transfer pawls are successively actuated so as to effect the necessary transfers comprises, as best shown in Fig. 5, a series of links I25 each connected to a related arm I22 and slotted so as to engage and rest upon an oscillating transfer shaft 9'I mounted between and supported by the two side support plates 57 and E8. The oscillatory movement of the transfer shaft 8? just mentioned is derived by the following means:

Located adjacent the support frame 68 is a plate 93 (Figs. 1 and 5) pivotally mounted upon the shaft 47 and having a lower extension 84 engaging the key ooupler The upper portion of the plate takes the form of a reel: 85 adapted to drive a gear 88 which is attached to the shaft 9?. Consequently, during an operation of the machine, the key coupler will rock to similarly rock the plate or segment 85 thereby imparting an oscillatory movement to the transfer shaft 87.

Upon the shaft secured a plurality of transfer cams I2! which are spirally arranged so as to actuate the links of the different (18- nominational orders seriatim. Each cam I 2! is in the plane of a pin carried by its associated link I28. It will be obvious that during the down of the keys.

' links will drop to their normal positions.

ward stroke of the keys the transfer shaft-3i will first be rocked counter-clockwise as previously described, and by the cooperation of the cams I 2! with the pins I29 the several links will be suc cessively elevated; the links I26 during such rocking movement being guided by the cooperation of concentric edges I33 of the links with the shaft 9? until the cams clear the pins whereupon the During the return stroke of the keys the cams I21 will engage the opposite sides of the pins E29 thereby forcing the links forwardly, the latter being guided in their movements by the slotted portions above fingers isl engaging the shaft Ell. In this man-- ner each of the transfer pawls I29 will be actuated and those that have been tripped will effect transfers. When the cam H27 clears the pin I29 the coil spring I23 connected between the arm I22 and its associated transfer pawl will return the parts to normal (Fig. It will be noted that as the cam l2? moves the link I26 forwardly to force the transfer pawl rearwardly the ends of the spring I28 will be brought together thus storingup additional energy in said spring and this energy is released when the cam I27 leaves the pin 929. Since the link E26 by moving the arm I22 stores up energy in spring 228 this energy will be dissipated to return arm I22 and link I26 when the latter is released from the cam Iii. When the link I'Zfi is released the energy in the spring I28 will tend to rock the pawl I253 counter-clockwise, but since the pawl already contacts a stationary member the energy will be used to rock arm I22 clockwise thus forcing arm I26 rearwardly and pawl I29 forwardly.

It will be observed from what has just been stated that the upward movement of the links I 23 is produced by the cams I2? during the downward movement of the keys, and that after each cam I2! is entirely disengaged from the related pin I29 the weight of the link is depended upon to restore it to its lower position where it rests upon the shaft 9'! so that shortly after this the reverse movement of the cam E21 will force the link forwardly to effect a transfer. In rapid operations of the machine the weight of the member IZ5 may not be sufficient to restore it to its normal position prior to the return movement of the cam I2! so that if the links I26 should be held by frictional forces the finger portion of the link indicated by the reference character i3I (Fig. 5) would engage the rear portion of the transfer shaft ill and thereby prevent further operation In order to prevent such misoperations a tensioning device which is common to the links I26 is provided and (as shown in Figs. 5 and 6) comprises a bail member i32 which is loosely pivoted upon the tie rod 69 and is urged clockwise by a spring E33 so that bent extensions I36 thereof cooperate with the upper rearward As will be observed in edges of all the links E26. Fig. 6 a plurality of these extensions is provided to cooperate with all of the links but. normally the extensions are slightly above the links and are held in this position by means of 2. lug I35 integral'with the member I32 contactinga portion of said frame 6?.

It will also be observed in Fig. 9 that the cam IZ'I associated with the transfer elements between the units and dimes denominational orders is of different contour than the other cams in that a considerable portion of its outer periphery is concentric with respect to the shaft 9'! so that at the beginning of the operation of the shaft the high concentric portion of this cam will almost immediately ooact with the pin I29 of the related link i 26 and will raise the latter and hold it elevated for a considerable period. Since one Of the extensions I313 coacts with the upper side of this link it will rock the member I32 upwardly Ff:

against the tension in the spring I 33 and will retain it in this position until the operated key reaches close to the end of its downward stroke. This construction prevents a ratcheting effect which would otherwise occur as the pins I29 of the several links 525 successively drop from the high portions of their related cams I27. When the pin lfidleaves the outer concentric part of the cam E2? of the lowest denominational order, the member 532 is released, so that the spring I33 will urge it downwardly and if one of the links I26 should be held elevated due to friction the related extension i3 3 will urge it downwardly to its normal position. This insures the restoration of the links to their normal positions prior to their for ward movements and it'will be apparent that by this means the danger of the portions I3! coacting with the shaft 9? will be minimized if not altogether obviated.

The spring is tensioned only during the down stroke of'the keys when the most power is available. Since the projections I34 area slight distance above'the links I25 during the return stroke of the keys the spring I 33 will" have no action on the arms E26 and will, therefore, not

place any additional load on the machine at a Resetting devices Resetting in the present machine is accomplished in a manner generally known, that is, by manually rotating the shaft it so that the square shoulder of a groove 2% (Figs. 3, 5, and 7). formed therein will cooperate with resetting or pick-up pawls 2G6 carried by the totalizer elements. Thus, when the shaft 74 is rotated in the proper direction the groove therein will cooperate with the pick-up pawls Zilt in whatever positions the latter happen to be and carry them and the connected totalizer elements to their zero positions. It will be noted that the relation between the groove and pawls is such that the wheels of the totalizer are restored by rotation of the shaft '54 in the same direction in which they are driven by the actuating segments 58, so that by this con struction the numeral wheels are free to rotate about the shaft id in adding operations without causing any movement of the shaft. As best shown in Figs. 1,. 3, 4, and 6, the shaft 7 3 has connected to it a resetting bar 23'? which fits loosely in an aperture formed in a bracket 253 attached to the side frame 2i- The connection between the bar 28%" and the shaft "Is is formed by inserting the bar in a slot in the shaft and passing a pin through them thus providing a swivel construction and it is such, that in the normal position of the parts the totalizer is free tobe rocked into and out of mesh with the racks. The cabinet 2i and side plate 2i are both provided with apertures 2685 (Fig. 3) through which the stem of a resetting key 288 is adapted to be inserted so that by the cooperation of a slot 2H] formed in the end of the key 289 with the end of the bar 20'! the shaft 74 may be rotated to reset the totalizer elements.

Under normal conditions, that is when the machine is in its registering condition, the apertures may be closed by any suitable means. For example, there may be employed a plate I98 (Fig. 4), movable into and out of range of the apertures by any suitable means. Such means forms no part of the invention claimed herein, and need not be here described, although one form thereof is shown in my parent application above referred to.

As previously stated, in resetting operations the totalizer elements are driven by the shaft 14 in the same direction that the actuators drive them. It will, therefore, be apparent that during the resetting operations the trip pins H5 carried by the wheels will cooperate with the trip pawls Ill and trip the latter as in adding operations. For this reason it is necessary to restore the tripped transfer pawls to thei normal inactive positions, since otherwise irregular transfers would be effected during the first subsequent operation of the machine. The shaft T-l (as best shown in Fig. 8) has attached thereto a cam 2M which is in the plane of one arm of a bell-crank 2H3 (Figs. 6 and 8) pivoted at Bids on the frame member 58. The other arm of the bell-crank ZIG carries a pin 2 I engaging a bifurcation in an arm 2I8 attached to a shaft i9 journalled in cars integral with the tie bar :24. A coil spring 220 acting between a fixed stud and the pin 25 I urges the arm 255 against the periphery of the cam 214. The shaft 259 is provided with a plurality of slots 222i (Figs. 6 and 7) adapted to receive and guide the transfer pawls I29 as well as to restore them after they have been tripped during a resetting operation.

The operation of the foregoing mechanism may now be pointed out. When resetting commences by manual rotation of the inserted resetting key a counter-clockwise rotation of the shaft I4 (Fig. 5) will cause the groove 2&5 to pick up the variously positioned pawls 205 to restore the totalizer elements. During this counter-clockwise rotation of the shaft H the periphery of the cam 2I4 will cooperate with the arm HS and gradually rock the latter and through the connections previously described, comprising the pin 2|! and arm 2I8, will rock the slotted shaft 2 I9 clockwise (Figs. 7 and 8). This rotation of the shaft will carry the slots 22! away from the transfer pawls I20 and will present the outer periphery of the shaft to these pawls tending to rock them slightly upwardly, the lug i2! at this time coacting with and sliding along the upper rearward edge of the trip pawl II'I. When the highest part of the cam 2I4 contacts the arm 2I6 the transfer pawls will be elevated to their highest positions and the continued counter-clockwise rotation of the shaft 14 (Fig. 8) will reversely rock the bellcrank ZIB and the shaft 2H5 will rock counterclockwise back to normal thus permitting the transfer pawls I29 to be lowered. The above described operation of the pawls I20 is merely an incident to the construction and relation between the parts, as it has no particular function. This operation results from the fact that the shaft 14 receives two movements, first counterclockwise, and then clockwise back to normal. The clockwise movement of shaft 14 performs the necessary function of restoring the tripped transfer pawls. At substantially the end of the coun tcr-clockwise rotation of the shaft 14 all of the totalizer elements will be passing from their 9 to their 0 positions at which time the trip pins I I5 will cooperate with the trip pawls II'l releasing all the transfer pawls I28 in the same manner that they are released during a regular transfor operation.

At this time rotation of the shaft 14 will be stopped by the cooperation of an integral extension 222 (Figs. 1 and 4) of the bar 20! with a pin 223 carried by the bracket 2G8. Reverse rotation of the shaft 74 will, in the form of embodiment shown, restore the tripped transfer pawls; but this operation will have no effect on the totalizcr elements, which are at this time in their zero position. As the shaft N is thus rotated reversely, or in a clockwise direction (Fig. 8), it will rock the shaft 2| 9 first clock-- wise (Fig. 7) and since at this time the transfer pawls have been released so that their lugs I2! are disengaged from the shoulders H8 and the pawls rest upon the supporting tie bar I24, the bottom of the slots 22I will have a camming effect upon and will elevate the transfer pawls until the lugs i2! are above the shoulders IIB. At this time the transfer trip pawls I IE will be urged by their springs I It to their normal positions (Figs. 5, 6, and 7). When the high part of the cam EU! is reached continued clockwise rotation of the shaft 74 Will permit the shaft 2!!! to be restored to normal, thereby lowering the trans fer pawls I26 slightly until the lugs IZI again engage the shoulders I 13 of the transfer trip pawls H'l. At the termination of the resetting operation the transfer mechanism is again in the position shown in Fig. 7, permitting transferring to be performed in the regular manner and at the end of this operation the resetting key is withdrawn from the machine.

The nature of the improved mechanism is such that in order to make the foregoing description as clear as possible, it was necessary to state the operation considerably in detail as an incident to explaining the various features of construction, and a complete re-statement of operation here is believed to be unnecessary.

Although the transfer mechanism and coopcrating parts have been shown in connection with a particular type of cash register it is readily evident that they may be applied to other forms of cash registers or adding machines.

While the form of mechanism herein shown and described is admirably adapted to fulfill the objects primarily stated it is to be understood that this embodiment is merely illustrative, since the invention is susceptible of embodiment in various other forms all coming within the scope of the claims which follow:

I claim:

1. In a machine of the class described, a plu rality of totalizer elements of denominational orders, a transfer pawl controlled by an element of lower order and adapted to operate an element of higher order, a reciprocating link adapted to operate said pawl, and an oscillatable cam adapted to first idly rock said link laterally and then slide it longitudinally to effect a transfer.

2. In a cash register, the combination of a series of keys, a reciprocating shaft driven by the keys, transfer actuating members, cams carried by said shaft for driving the transfer actuating members, said cams when moved in one direction producing an idle movement of said members, and a tensioning device effective during movement of the cams actuating members, said members being given an idle movement as said shaft is turned in one direction, and. a tensioning device for restoring the transfer actuating members to their normal positions, one of said cams being arranged to shift device to an inactive position during a portion of the stroke of the keys.

4. In a cash register, the combination of a series of keys, a shaft driven by thekeys, transfer actuating members, means on said shaft for said members, a tensioning device for restering the transfer actuating members to their nerm'al positions, and a cam carried by said shaft arranged to render said device ineifective during a portion of the stroke of the keys.

5.111 a cash register, the combination of a of keys, a reciprocating shaft driven by the keys, transfer actuating members, transfer cams A driven by the shaft for driving the transfer actuatin members, said cams being adapted to rock said members, and a tensioning device for restoring the transfer actuating members to their normat pcsiti'onswhen rocked, the tensioning device beingnormally out of contact with said members.

6. In a cash register, the combination of a series of keys, a reciprocating shaft driven by the keys, transfer actuating members, transfer cams driven by the shaft for driving the transfer actuat g members, said cams serving also to idly rock sa members, and a tensioning device for restoring the transfer aetua ting members to their normal positions, the tensioning device being normally out of contact with said members, and one of said 3 being arranged torender said device ineffective during a portion of the stroke of the keys.

i In a cash register, the combination of a plurality oftotalizer elements, a transfer pawl, means for actuatin said pawl upon each operation of the machine, a trip pawl normally holding said transfer pawl inactive, means carried by a lower order totalizer element adapted to rock said trip pawl to release the transfer pawl for an effective transferring operation, and a pin carried by the trip pawl adapted to contact with the upper por tion of said transfer pawl when said trip pawl is" tripped to positively force the transfer pawl to its eifective position.

CHARLES W. GREEN.

is V

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