US806795A - Adding-machine. - Google Patents

Description

No- 806,795. PATENTBD DEC. 12, 1905. J. H. GINET, JR.

ADDING MACHINE.

IIIIIIIIIIIIIIIII 38.15. 1904.

SSSSSSSSSSSSS 1.

No. 806,795. PATENTED DEC. 12, 1905. J. H. GINET, JR, ADDING MACHINE.

APPLICATION FILED FEB.15.1904.

4 SHEETS-SHEET 2.

.No. 806,795. PATENTED DEC. 12, 1905. J. H. GINBT, JR. ADDING MACHINE.

APPLICATION mm: mm. 15. 1904;.

4 SHEETS-SHEET a.

Icy-12*. 97 954 7,; 7? 7.5

7 JtZ No. 806,795. PATENTED DEC. 12, 1905. J H GINET, JR ADDING MACHINE.

APPLICATION FILED FEB.15, 1904.

4 SHEETS-SHEET 4.

UNITED STATES PATENT OFFICE.

ADDING-MACHINE.

Specification of Letters Patent.

Patented Dec. 12, 1905.

Application filed February 15, 1904. Serial No. 193,505.

To (.tZZ whom, it nccty concern.-

Be it known that I, JOSEPH H. GINET, Jr., a citizen of the United States,residing in the city of St. Louis, in the State of Missouri, have invented certain new and useful Improvements in Ad ding-Machines, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

My invention relates to an adding-machine for use in summing up and furnishing notation of the columns of figures; and it consists in features of novelty hereinafter fully described, and pointed out in the claims.

Figure I is a top or plan view of my adding-machine. Fig. II is a front elevation of the mechanism of my machine with the inclosing casing shown in longitudinal section. Fig. III is a vertical cross-section taken on line III III, Fig. II, looking in the direction of the arrow at said line. Fig. IV is a vertical cross-section taken on line IV IV, Fig. II, looking in the direction of the arrow at said line. Fig. V is an enlarged vertical crosssection taken on line V V, Fig. II, looking in the direction of the arrow at said line. Fig. VI is a view looking at the side of one of the pinions carried by the counting-wheels of themachine and showing the stop mechanism by which said pinion is controlled. Fig. VII is a vertical cross-section taken on line VII VII, Fig. 11. Fig. VIII is an elevation of one of the machine-keys and the adding-mechanismcontrolling rocker carried thereby. Fig. IX is a perspective view of a portion of the rockerbar by which the depression of the keys is controlled. Fig. X is a perspective view of one of the locking-catches that engage the keys. Fig. X1 is a view of the lower end of one of the keys and a different adding-mechanism-controlling rocker illustrated therein from that shown in Fig. VIII. Fig. XII is a view illustrating portions of two of the keys of the machine and the locking-rocker shown in Fig. IX in engagement with one of the keys to uphold it after the other has been depressed.

I designates the base of my machine, and 2 the inclosing casing, which is preferably removably mounted on the base, to which it is secured by any suitable means, such as screws 3. -In the top of the casing 2 is an opening 4, in which are arranged a key-plate 5 and a sight-plate 6. The sight-plate is provided with a series of apertures 7, through which view is afforded to the numerals on the counting-wheels located beneath said plate.

8, 9, 10, 11, and 12 are standards mounted on the base 1 within the casing 2 and by which the mechanism of my machine is supported.

I3 designates a barrel secured to the standard 8, and I4 is a key-shaft journaled in saidstandard and barrel.

15 is a mainspring in the barrel 13, having one end fixed to said barrel and the other end fixed to said key-shaft.

16 is a ratchet-wheel fixed to the key-shaft I4: and which has means of engagement with the tripping mechanism of a hammer 17, that is designed to strike an alarm-bell 18 to furnish information when tension in the mainspring is nearly exhausted.

19 designates a gear-wheel fixed to the keyshaft let and meshing with a pinion 20, carried by a stub-shaft 21, that is journaled in the standard 9.

22 is a gear-wheel also fixed to the stubshaft 21.

23 is a main power-shaft to which power is transmitted from the spring 15 through the key-shaft 14: and gearing described and a gearwheel 2A, fixed to said power-shaft and arranged in mesh with the gear-wheel 22. The powershaft 23 extends longitudinally of the machine and is journaled in the standards 9, 10. 11, and 12. This shaft is constantly subjected to the power influence 0f the mainspring 15.

To the more readily refer to the various parts of the mechanism of my'machine, I will designate a part of the machine as the keysection A, located between the standards 9 and 10, and another part as the additionsection B, located between the standards 11 and 12.

Fixed to the power-shaft in the key-section A are a series of pinions 25, corresponding in number to the number of the actuating-keys of the machine, to which reference will hereinafter be made.

26 is a ratchet check-wheel fixed to the power-shaft 23 in the key-section A.

27 designates a rock-shaft journaled in the standards 9 and 10. Fixedto this rock-shaft adjacent to the check-wheel 26 is a pawl 28, that is designed for engagement with said check-wheel, as seen in Fig. .VII.

29 designates a series of fingers fixed to the shaft 27 and projecting therefrom above the power-shaft 23 and offset from the pinions 25 on said shaft.

designates across-bar positioned between the standards 9 and 10 and secured to said members.

31 designates the actuating-keys of the machine, which are provided at their upper ends with the buttons 32, hearing unit-numerals 1 ?72 7 3 77 4 5 7 7, and 9. The keys 31 operate through the key-plate 5 and the cross-bar 30, and each is normally upheld by a spring 33, that engages with a pin 34, projecting from the key. Extending from the bar of each key 31 is a stud 35 and a downwardly-inclined cam 36, both of which are located above the cross-bar 30. Beneath said cross-bar in each key-bar is a notch 37. (See Figs. VII, VIII, and XII.) The utility of the studs 35 and cams 36 will be hereinafter mentioned.

38 designates spring-catches that are secured to the cross-bar 30, each catch having an arm 39, that is notched at 40 to furnish a lip ll, that is adapted to enter into the notch 37 in the key-bar. Extending from the location of the lip of each catch 41 is a finger 42, that occupies a position alongside of the corresponding key-bar, as seen in Figs. VII and XI, and at the termination of each finger is an up- 7 turned tongue 43.

J ournaled in each key-bar is a shaft 44:, and fixed to said shaft is a controllingwheel or toothed segment 45. These controllingwheels are designed to be lowered into mesh with the pinions 25 when the corresponding keys are depressed and held in lowered position by the spring-catches 38. The teeth on the controlling-wheels 4:5 correspond in number to the numeral borne by the button of a particular key. For instance, controllingwheel shown in Figs. VII and VIII is that of the numeral 9 key, while the controllingwheel shown in Fig. XI is that of the numeral 3 key. Projecting from one of the sides of each controlling-wheel is a stud 46, that is located at the proper distance from the teeth of the wheel according to the numeral that applies to it, so that the distance to be traveled by said stud will vary according to the movement provided for by the engagement of the controlling-wheel teeth with the pinion 25, to which it is moved, as will presently be shown. The stud L6 of each controllingwheel is designed to move to a catch-finger 42 to engage therewith and trip said finger away from the key-bar which it previously held depressed. When any one of the keys is depressed to bring the corresponding controlling-wheel into mesh with the pinion 25 beneath it, the key first acts to force the corresponding finger 29 on the rock-shaft 27 downwardly, and the teeth of the controllingwheel at the same time enter into mesh with the teeth of the pinion approached thereby.

Immediately after said wheel and pinion have entered into mesh the continued rocking of the shaft 27 causes the pawl 28, governing the rotation of the ratchet check-wheel 26, to be disengaged from said check-wheel, and as a consequence the power-shaft 23 is permitted to partake of rotation to the extent permitted by the distance of travel of the stud 46 on the controlling-wheel from the starting-point to its engagement with the finger of the springcatch 38 to free said catch from the key. Immediately upon the freeing of the catch, which takes place after all of the teeth of the controlling-wheel have traversed the corresponding pinion 25, the key that has been depressed is again elevated by the corresponding spring 33, and the controlling-wheel carried by said key is returned to normal position by a retracting-spring 47, that is connected to the controlling-wheel shaft and the key, as seen in Fig. VIII. Just before the eontrollingwheel 45 is separated from the pinion 25 the pawl 28 is returned into ongagement with the check-wheel 26 under the action of a spring 27, that is connected to the rock-shaft 27 and rocks said shaft reversely from its previous movement, and the rotation of the check-wheel is therefore discontinued to prevent greater rotation of the power-shaft 23 than that provided for by the movement of the controlling-wheel that has been depressed into engagement with the pinion 25, according to the number of teeth carried by said controlling-wheel.

4:8 designates a shaft mounted in the standards 9 and 10 in a line parallel with the bars of the keys 31. Loosely mounted on this shaft is a rocker 49. (See Figs. II, VII, IX, and XII.) This rocker is provided with a lower flange 50 and an upper flange 51. Vhen any individual key is depressed, the cam 36 of said key rides downwardly in contact with the lower rocker-flange 50, thereby oscillating the rocker into the position seen in Fig. XII, during which movement the stud 35 passes beneath the upper rocker-flange 51 to permit continued downward movement of the key until its bar has been engaged by the springcatch 38. When this action takes place, the upper rocker-flange is moved into a position immediately beneath the studs 35 of the remaining key-bars, and therefore depression of the remaining keys is prevented, while the one that has been depressed is in lowered position. bility of interference with the actuation of the working parts of the machine by any of the remainder of the keys being depressed accidentally or otherwise when the one hearing the numeral to be added has been actuated.

Having now described the key-actuating mechanism of my machine, I will proceed to the description of the adding mechanism.

52 designates a pair of guide-rods extendmg in lines parallel with the power-shaft 23 This construction obviates any liain the addition-section B of the machine and mounted in the standards 11 and 12.

53 is a carriage that is reciprocally guided on the rods 52.

54 is a spring-controlled drum the shaft 55 of which is journaled in the standard 12. (See Figs. II and III.) In this drum and connected thereto and to the shaft 55 is a spring 56.

57 is a pull-cord that is connected to and winds into the drum 54 and passes therefrom beneath a pulley 58 and to the carriage 53, to which it is connected to serve asa power member for drawing the carriage toward said spring-drum.

59 designates a drive-wheel reciprocally mounted on the power-shaft 23 within the carriage 53. This drive-wheel is held from rotation with the power-shaft, due to said shaft being grooved longitudinally, as seen at 23, Fig. IV, and to the drive-wheel being provided with an interior tongue 60, that enters said groove to ride therein.

61 designates a ratchet-bar (see Fig. II) one end of which is fixed to the carriage 53 and which projects into the key-section A of the machine. This ratchet-bar bears a fingerpiece 62, that protrudes through a slot in the casing 2 of the machine (not shown) and by which the ratchet-bar may be drawn rearwardly after the carriage 53 has been moved forwardly under the action of the springdrum and its pull-cord, when the action to be hereinafter described takes place.

63 designates a pawl that engages the teeth of the ratchet-bar 61 and is pivotally mounted at 64, (see Fig. II,) this pawl serving to hold the ratchet-bar in a set position.

65 is a push-rod that is provided at its upper end with a button 66. The push-rod 65 is reciprocally positioned in a bracket 67, secured to the standard 11, (see Fig. IL) and within said bracket surrounding the push-rod isa lift-spring 68, that normally maintains the rod in an uplifted position. The rear end of the pawl 63 is pivoted to the lower end of the push rod 65 at 69. Extending downwardly from the push-rod beneath the point of connection of the pawl 63 is a check-finger 7 O, that when the push-rod 65 is depressed to rock the pawl 63 out of engagement with the ratchet-bar 61 is lowered into the path of one of the teeth of said ratchet-bar and serves to limit the forward movement of the ratchetbar and carriage 53 and drive wheel 59. When the push-rod is again elevated by the lift-spring 68, the pawl engages the next succeeding ratchet-bar tooth to that which it previously engaged and the check-finger is again elevated.

71 designates a counting-wheel shaft rota: tively mounted in the standards 11 and 12.

72 designates a series of counting-wheels loosely mounted on the shaft 71 and each bearing upon its perimeter a series of numerl v "4, 5 7; 77 7 8, and 9. These counting-wheels may be of any desirable number, the wheel at the right being the units-wheel, the one next succeeding toward the left being the tens-wheel, and so on throughout the series. In the drawings are shown six counting-wheels that provide for counting into the hundreds of thousands. Fixed to one side of each of the counting-wheels is a pinion 73, and fixed to the side of each counting-wheel except the units-wheel at the side opposite to that occupied by the pinion 73 is a transfer-wheel 7et.

75 is a spring suitably supported in proximity to the transfer-wheel 7 k and having its free end (see Fig. V) arranged to engage the teeth of said wheel to prevent retrograde rotation thereof.

76 designates a series of intermediate gearwheels that are independently and loosely mounted on a shaft 77, (see Figs. 11, IV, and V), the intermediate gear-wheels corresponding in number to the number of countingwhcels and pinions 73, and they mesh independentl y with said pinions. Each of the intermediate gear-wheels is arranged to receive the engagement of the drive-wheel 59, that is reciprocally positioned on the power-shaft 23 and is capable of movement to the intermediate gear-wheels in succession, beginning with the gear-wheel associated with the units countingwheel. \Vhen the drive-wheel 59 is in engagen'ient with either of the intermediate gears, it is held from longitudinal movement on the power-shaft by the ratchetbar 61, and the pawl 63 engages therewith, and when the ratchet-bar is freed through the actuation of the push-rod 65 in the manner described the drive-wheel is moved to the next succeeding intermediate gear-wheel under the action of the spring-drum 54: and its pull-cord 57.

78 designates a plurality of pivot-teeth that are each movably mounted on the intermediate gear-wheel 76 and the outer ends of which are arranged to engage the transfer-wheels 74: to impart rotation to said transfenwheels of each individual counting-wheel with the exception of the units-wheel. These pivot-teeth are so arranged as to occupy positions adjacent to every tenth tooth of the intermediate gear-wheel to which they are applied, so that a pivot-tooth will engage one of the teeth of the corresponding transfer-wheel when the intermediate gear-wheel has been rotated the distance of ten teeth, thereby causing a corate gear-wheel. The pivot-teeth are held out wardly projected by springs 84:, that are fixed at 85 to the intermediate gear-wheel and the free ends of which bear against pins 86, carried by the pivot-teeth. For the purpose of preventing rotation, while the transfer-wheel is being rotated, of the counting-wheel-carried pinion 73 corresponding to the countingwheel that was previously actuated in a counting operation 1 provide a dog 87, that engages with said previously-actuated pinion during the transfer-wheel actuation. There is a number of these dogs corresponding to the number of the pinions 73, and each is mounted on a shaft 88 and controlled by a spring 89. (See Figs. 1V and V.)

90 designates swinging arms loosely mounted on the counting-wheel shaft 71 adjacent to the pinions 73 and having their depending ends arranged in the path of travel of the pivot-teeth 78, so that they will be engaged by said teeth in the manner illustrated in Fig. VI. The swinging arms 90 and dogs 87 are united by links 91, that are pivotally connected to said members. It will be seen that when one of the pivot-teeth engages the adjacent transfer-wheel 74:, as seen in Fig. V, it will also engage the swinging arm 90 and move said arm to draw the dog 87 into engagement with the adjacent and previously-operated pinion 73 at the same time that it actuates the transfer-wheel.

92 designates a rock-shaft mounted in the standards 11 and 12. This rock-shaft supports a rocking yoke 93, that is provided with a longitudinal cross-bar 94, positioned at the rear of the counting-wheels 72 and extends longitudinally of the machine throughout the course of said counting-wheels.

95 is a shaft journaled in the yoke 93. On this shaft 95 is a roller 96, that extends the full width of the combined counting-wheels and is provided with a pliable surfacing 97.

98 is a crank-arm fixed to the shaft 92 and yieldingly upheld by a spring 99, (see Fig. 1H,) whereby said rock-shaft 92 is mounted in a position to uphold the yoke 93 and normally maintain the yoke cross-bar and roller 96 separated from the counting-wheels. The crank-arm 98 has connected to it a push-rod 100, by which the crank-arm is depressed to rotate the rock-shaft 92 and carry the yoke cross-bar and roller 96 to the counting-wheels. At the upper end of the push-rod 100 is a button 101. The roller-shaft 95 is provided at its outer end with a key-receiving head 95, (see Figs. II and 111,) to which a suitable key may be applied to rotate said shaft and roller.

The operation of my machine has been mainly set forth in the description of the parts; but it may be briefly set forth in addition by the following: The power-shaft 23 throughout its length being constantly subjected to the action of the main spring 15 through the gearing connecting said members is caused to partake of rotation and impart rotation to the pinions 25 and d rive-wheel 59, mounted thereon, whenever said power-shaft is freed. Upon the depression of any one of the keys 31 corresponding to the numeral to be counted the controlling-wheel 45, carried thereby, is lowered into mesh with the adjacent and correspond ing pinion 25, so that the teeth of said wheel and pinion will mesh and be maintained in engagei'i'ient through the medium of the springcatch 38. At the same time this action occurs the check-wheel engaging pawl 28 is freed from the checkwheel 26, with the result that the check-w heel and power-shaft are permitted to rotate a distance corresponding to the number of teeth on the controlling-wheel corresponding in number to the numeral borne by the key by which said controlling-wheel is carried. Vhen rotation in this manner has occurred to the extent provided for by the controlling-wheel teeth, the catch 38 is freed' from the depressed key and the parts return to their normal positions under the action be fore set forth, thereby causing cessation of the rotation of the power-shaft. During the power-shafts rotation in the manner described. corresponding rotation is imparted to the drive-wheel 59 and con'imunicated to the intermediate wheel 76, with which it meshes, so that the counting-wheel 72 correspoi'iding thereto will be rotated a like distance through the medium of the pinion 7 3, iixed thereto, to bring the numeral on said counting-wheel to the sight-opening 7 immediately above the wheel. The actuation of the key 31 next depressed causes like rotation' of the operating parts to occasion renewed movement of the counting-w heel. \Vhen integers amounting to tens or multiples of tens have been added by de pressing the keys 31, the intermediate wheels 76 have partaken of suflicient rotation to bring one of the pivot-teeth 79 into engagement with the adjacent transfer-wheels 74c, and a consequence said transfer-wheel has a step rotation imparted thereto to carry the addition of the tens to the next succeeding counting-wheel adjacent to the counting wheel previously in rotation, thereby, for instance, transferring the units to the tens counting-wheels. After adding the first section of the column of ligures the push-rod is depressed, thereby releasing the ratchet-bar 61 in the manner stated, so that the drive-wheel 59 may move longitudinally of the power-shaft 23 a distance corresponding to the space between the ratchetbar teeth, and the drive-wheel then enters into mesh with the intern'iediate gear-wheel 76 next adjacent to that with which it previously engaged. The addition of the second section of the column ofligures is then proceeded with, and the same procedure is carried out with respect to all of the sections of the column of ligures being added. In setting the machine for reoperation the ratchetbar 61 is drawn rearwardly toward the right,

ITO

.wheels upon its periphery.

as illustrated in Fig. II, until both the ratchetbar and the drive-wheel 59 will assume the positions illustrated in dotted lines. The push-rod 100 is then depressed, thereby throwing the yoke 93 forwardly and bringing the friction-roller 96 into contact with the counting-wheels 72. \Vhen the yoke is moved into this position, the cross-bar 94, carried thereby, will occupy a position adjacent to the perimeters of the counting-Wheels and will be in the path of travel of protuberances 72, one of which is carried by each of the counting- (See Figs. II and IV.) These protuberances are in such position on the counting -wheels that they will strike against the yoke cross-bar 94 when the counting-wheels are rotated into a position that will place the O character of each counting-wheel immediately beneath the corresponding sight-opening 7. The countingwheels then have rotation imparted to them by applying akey to the roller-shaft 95 to rotate the friction-roller 96, bearing against all of the counting-wheels, With a result that the counting-wheels are turned upon the shaft 71 a distance suflicient to bring the O characters thereon to the sight-openings above them, and as each counting-wheel protuberance 72 comes into contact with the yoke cross-bar 94 its rotation will be stopped, but the rotation of the remainder of the counting-wheels will be continued until the 0 characters are all in line beneath the said sight-openings.

I claim as my invention 1. In an adding-machine, the combination of a series of counting-wheels, mechanism for operating said counting-wheels, a series of numeral-keys, and controlling-wheels carried directly by said keys and arranged to be brought into engagement with said counting-wheel-op erating mechanism; said controlling-Wheels being provided with series of teeth corresponding to the numerals of the keys by which they are carried, substantially as set forth.

2. In an adding-machine, the combination of a series of counting-wheels, mechanism for operating said counting-Wheels, a series of numeral-keys, controlling-wheels carried bysaid numeral-keys and arranged for engagement with said operating mechanism, and means for retaining said keys to hold said controlling-wheels in engagement with said mechanism, substantially as set forth.

3. In an adding-machine, the combination of aseries of counting-wheels, mechanism for operating said counting-wheels, a series of numeral-keys, controlling-wheels carried by said numeral-keys and arranged for engagement with said operating mechanism, and springcatches for engaging with said keys to hold said controlling-wheels in engagement with said mechanism, substantially as set forth.

4. In an adding-machine, the combination of aseries of counting-Wheels, mechanism for operating said counting-Wheels, a series of numeral-keys, controlling-Wheels carried by said numeral-keys and arranged for engagement with said operating mechanism, means for holding said keys to maintain the engagement between said controlling-wheels and operating mechanism, and means for freeing said keys after said controlling-wheels have partaken of a rotation corresponding to the extent of active engagement between the controllingwheels and operating mechanism, substantially as set forth.

5. In an adding-machine, the combination of aseries of counting-wheels, mechanism for operating said counting-Wheels, a series of numeral keys, controlling wheels rotatively mounted in said keys for engagement with said operating mechanism, spring-catches for engagement with said keys to maintain said controlling-wheels in engagement with said operating mechanism, and studs carried by said controlling wheels for moving said catches out of engagement with said keys when the controlling-wheels have partaken of a rotation corresponding to the extent of active engagement between the counting- Wheels and operating mechanism, substantially as set forth.

6. In an adding-machine, the combination of a series of counting-wheels, a power-shaft, mechanism between said power shaft and counting-wheels for imparting rotation to said counting-wheels, a series of pinions on said power-shaft, a series of numeral-wheels, controlling-wheels rotatively mounted in said numeral-keys and bearing teeth corresponding in number to the numerals of the keys, and means for holding said controlling-wheels in fixed engagement with said pinions and freeing them from said engagement when the controlling-wheels have partaken of a rotation corresponding to the extent of teeth thereon that engage said pinions, substantially as set forth.

7. In an ad ding-machine, the combination of a series of counting-wheels, a power-shaft, mechanism for transmitting motion from said power-shaft to said counting-wheels, means for holding said power-shaft from rotation, a series of pinions on said power-shaft, a series of numeral-wheels rotatively mounted in said keys and arranged to be moved into engagement with said pinions, means for freeing said power-shaft for rotation while a controlling-wheel is in engagement with one of said pinions, and means for checking the rotation of said power-shaft and separating the previously-operating controlling-wheel from the pinion engaged thereby, substantially as set forth.

8. In an adding-machine, the combination of a series of counting-wheels, a power-shaft, mechanism for transmitting motion from said power-shaft to said counting-wheels, a checkwheel fixed to said power-shaft, a series of pinions fixed to said power-shaft, a spring-actuated pawl engaging said check-wheel, a series of numeral-keys, controlling-wheels rotatively mounted in said keys, and arranged for engagement with said pinions, and a series of fingers associated with said cheek-wheel pawl and extending into proximity to said keys to be actuated thereby, substantially as set forth.

9. In an adding-machine, the combination of a series of counting-wheels, mechanism for operating said counting-wheels, a series of numeral keys, controlling wheels rotatively mounted in said keys and arranged for engagement with said operating mechanism to govern the movement of the mechanism, means for freeing said controlling-wheels from said mechanism, and return-springs associated with said controlling-wheels to retract them into normal position, substantially as set forth.

10. In an adding-machine, the combination of a series of counting-wheels, intermediate gear wheels for actuating said counting- Wheels, a power-shaft, a drive-wheel reciprocally mounted on said shaft for engagement with either of said intermediate gear-wheels, a spring controlling member for imparting reciprocation to said drive-wheel on said shaft, a ratchet-bar for holding said drive-wheel from reciprocation, a pawl engaging said ratchet-bar, a push-rod having connection with said pawl, and a finger carried by said pushrod for engaging said ratchet-bar when said pawl is freed therefrom, substantially as set forth.

11. In an adding machine, the combination of a series of counting-Wheels, ashaft on which said wheels are mounted, pinions associated with said counting-wheels, means for imparting rotation to said pinions, transfer-wheels associated with said counting-wheels, means for imparting rotation to said transfer-wheels, and means for preventing said pinions from rotating more than a single step while said transfer-wheels are being rotated; said last-named means consisting of a series of dogs to engage said pinions, and swinging arms mounted on said counting-wheel shaft and connected to said dogs and arranged to be engaged by said transfer-wheel-rotating means, substantially as set forth.

12. In an adding-machine, the combination of a series of counting-wheels, mechanism for operating said counting-wheels, a series of numeral-keys, means carried by said keys for controlling said eountingwheel-operating mechanism, and a rocker for upholding the remainder of said keys after one of them is depressed; said keys being provided with cams and studs arranged respectively to move said rocker and serve as stops, substantially as set forth.

13. In an adding-machine, the combination of a series of counting-wheels provided with perimetral protuberances, a yoke rockingly mounted in proximity to said counting-wheels, a rotatable shaft journaled in said yoke, a roller carried by said shaft arranged to rotate in frictional contact with said countingwheels, and a single cross-bar forming a part of said yoke and arranged to receive the engagement of all of said counting-wheel protubelranees in common, substantially as set fort '1.

JOSEPH H. GINET, JR. In presence of E. S. KNIGHT, NELLIE V. ALEXANDER.

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