US1902597A - Calculating machine - Google Patents

Description

March 21,1933. V TURCK CALCULATING MACHINE.

Filed Sept. 29, 1927 March 1933- J. A. v. TURCK CALCULATING MACHINE Filed Sept. 29. 1927 5 Sheets-Sheet 3 March 21, 1933. J v TURCK 1,902,597

CALCULATING MACHINE Filed Sept. 29, 1927 5 Sheets-Sheet 4 March 1933- J. A. v. TURCK CALCULATING MACHINE Filed Sept. 29, 1927 5 Sheets-Sheet 5 1 N VEN TOR.

2 A TTORNE Y.

Patented Mar. 21, 1933 UNITED STATES PATENT OFFICE JOSEPH A. V. T'URCK, OF 'WILMETTE, ILLINOIS, ASSIGNOR TO FELT & TARRANT MANU- FACTURING COMPANY, OF CHICAGO, ILLINOIS, A. CORPORATION OF ILLINOIS CALCULATING MACHINE This invention relates in general to improvements in calculating machines and more particularly to calculating machines of the multiple-order key-driven type, such as those exemplified by the well known Comptometer machines.

An object of the present invention is to provide a more effective cancelling means for the light key actuation mechanism now being used in the latest model of the Comptometer machines in which a new escapement mechanism for the escapement action of the carrying mechanism permits the use of a spring of reduced resistance for the column actuator, which permits the column actuator to be depressed by any of its keys with a lighter key action than has heretofore obtained. The consequent slowing-up of the rise of the column-actuator or segment lever under the reduced resistance of the spring has brought about a new condition which was not present in the earlier models of the Comptometer machines.

A depressed segment lever in an earlier model of the Comptometer machines, which model was manufactured under Patent 1,357 ,747, holds a'toggle breaking member rearward which in turn prevents the making up of a detaining toggle to hold a rock frame forward and the accumulator gears out of mesh to allow the numeral wheels to return to ,zero under the influence of their carrying springs. But in such model of the Comptometer machines, by reason of the greater spring resistance, a depressed segment lever held down by a segment lever lock would return quickly enough in zeroizing to prevent an interference with the making up of the rock frame detaining toggle, while the slower rising action of the segment lever in the later model, by reason of the reduced resistance of the spring, does interfere with the making upof the rock frame detaining toggle. Thus it becomes necessary to provide an auxiliary device to prevent return of the rock frame before the depressed segment lever has risen and until the detaining toggle has made up to detain the rock frame 64 from return, as a more effective means against extreme rapidity of cancelling action or trick operation of the cancelling handle which could produce erroneous clearing of the register. In accordance with the present invention such condition is taken care of by the provision of a latching device coacting with the cancelling mechanism to lock it in full forward-thrown direction, such latching device being put into operation for such locking operation by a depressed segment lever, thus causing the cancelling handle and associated mechanism to continue to hold the rock frame out so long as a segment lever is depressed and until the segmentlever is 1n its normal inactive positionat which time the detaining toggle has a chance to make up before the rock frame returns to normal. When the detaining toggle has made up, which making up is dependent upon the normal inactive position of the column actuators or segment levers, it holds the rock frame 1n clearing position, that is, so as to hold the gears out of entrainment,.until another calculating operation is begun, at which time the downward idle stroke of the first key depressed and its column actuator breaks the detaining toggle which permits the rock fame to return to position so that the gears entrain before the key and its column actuator or segment lever begin their rising active or adding movement.

The invention has for further objects such other improvements in construction and advantages in operation as may be found to obtain in the mechanism hereinafter described or claimed.

In the accompanying drawings, forming a part of this specification, and showing for purposes of eXemplifica-tion, a preferred form and manner in which the invention may be embodied and practiced, but without limiting the claimed invention specifically to such illustrative instance or instances Figure 1 is a plan view of a calculating machine of the multiple-order key-driven type in which the present improvements ire embodied;

Fig. 2 is a vertical sectional elevational view taken at the right hand side of the calculating machine illustrated in Fig. 1, as indicated by lines 2-2 thereon;

Fig. 3 is a vertical sectional elevational view taken at the left hand side of the calculating machine illustrated in Fig. 1, as indicated by lines 23-? thereon showing the accumulator mechanism in detained zeroizing position;

Fig. 4 is a detailed side elevational view, parts being shown in section, showing the rock bar being rocked by a brake which is being pressed rearwardly by a column-actuator or segment lever;

Fi 5 is a side elevational view illustrating t e mechanism for locking the cancelling crank in its forward position when a depressed key is holding a column-actuator or segment lever down so that the rock bar is maintained in rocked position;

Fig. 6 is a sectional elevational view similar to Fig. 3 showing the accumulator in entrained position, and showing the toggle mechanism, for maintaining entrainment of the accumulator mechanism, in locked position for holding the accumulator mechanism gearing in mesh with the actuating mechanism during normal operation of the machine;

Fig. 7 is a view of the parts illustrated in Figs. 3 and 6, but viewed from the opposite side of the machine; and

Figs. 8, 9 and 10 are detail views of the connections shown in Fig. 3 for detaining and restoring the swinging frame parts of the zeroizing mechanism.

The embodiment of the invention shown on the drawings is particularly designed and adapted for use in calculating machines such as the well-known Comptometer machines, disclosed in United States Letters Patent No. 1,072,933 to Dorr E. Felt, and other patents to Dorr E. Felt, and also in United States Letters Patent No. 1,110,734 to Kurt F. Ziehm, and United States Letters Patent Nos. 1,357,747, 1,357,748 and others to the present inventor Joseph A. V'. Turck. Features of the invention are, however, readily susceptible of other valuable application; consequently, the scope of the invention is not confined to the specific use and specific embodiment herein described as an .illustrative example. As the details of construction of this ty e of machine may be readily understood rom these United States patents, a brief description of the general features of this type of machine, and such parts as are directly concerned with the operation of the present improvement, will be suflicient for an understanding of this invention.

The various instrumentalities of the calculating machine are supported by a frame mounted on the base 21 of a casing, said frame bein constituted of side skeleton lates 22 ant l intermediate skeleton plates 23 isposed between the various actuating mechanisms of the several orders of the machine,

and all tied together at suitable points b tie rods 24. A number of columns of nine keys are provided, each key being indicated by the reference character 25, and there being a column of nine keys for each numeral wheel that is a duplicate of the other columns, together with the actuating mechanisms and attendant Harts interposed between a column of keys an its corresponding numeral wheel. Each column of keys 25 forms a part of an actuating mechanism for transmitting to its numeral wheel an amount of travel proportioned to the particular key operated, and the actuating mechanism corresponding with each column of keys and its numeral wheel includes a column actuator in the form of a segment lever 26 pivoted at the rear end of the machine and adapted to be depressed in different amounts, as determined by the particular keys 25 actuated by the operator. Each key 25 is provided with a stem 27 extending down and bearing on the corresponding column actuator 26. The column actuator for each order or column of nine keys. is adapted to impart calculating movement to the accumulator mechanism of which the numeral wheels 38 form a part, and, for such purpose, is provided at its forward end with a rack which meshes with a ratchet pinion journaled on a transverse shaft 30 that extends across the machine .and is supported in suitable bearings in the skeleton frame. The pinion of each order forms a part of an internal ratchet mechanism, not herein described but fully set forth in prior patents hereinabove mentioned. Such ratchet mechanism becomes effective on the upward stroke of the column actuator to clutch the column actuators 26 to the lantern wheel and transmitting pinion or gear 31, which is normally operatively connected by a train of gearing with the numeral wheel pinion 36. The latter pinion is journaled on a transverse shaft 37 and is fixed to the numeral wheel. \Vhenever a column actuator is depressed the ratchet mechanism moves idly and hence no motion is transmitted to the gear train interposed between it and the numeral wheel pinion 36. However, upon the return orupward movement of the column actuator, the column actuator is clutched to the gear 31 and the said interposed gear train rotates the numeral wheel 38 through an are determined by the particular key of its corresponding order that is actuated. The column actuator is moved upwardly on release of the actuated key, by column actuator springs 39.

The machine is provided with column actuator or segment lever locks, preferably of the type operable on partial depression and release of one or more keys to lock their respective segment levers until the misstruck key has been completely depressed. Such mechanism is more fully shown and described in Patents 1,072,933 and 1,110,734 and includes key-board locks 78, which are set through a rearward swing of reciprocating bar 93, which forms a part of a rocking device consistin of an arm 94 fastened to a pivoted rock ar 95. The rearward swlng of the bar 93 releases an arm 92 forming a part of a rock-frame carrying rod 74 which co-acts with the locks 78 to normally hold them out of engagement with the latches 79 of the column actuators 26, such release allowing the arms 92 and rod 74 to drop and the locks 78 to engage the latches 79 on segment levers 26.

Zeroizing is efiected by detralnmg or disengaging the transmitting plnlons 31 from the carrying-spring winding gears 32. The shaft 37 of the numeral wheels is mounted in the frame of the machine, as is likewise the shaft30 of the lantern wheel and pmions 31 and the shaft 35 of gears 34 that are intermediate the winding gears 32 and the numeral wheel gears 36. In order to effect detraining or disengagement of the gears 32 from the pinions 31 of the lantern wheels, the shaft 33 of the gears 32 is carrled by a swinging frame 64' comprising partitlon plates 64 connected together by tie rods 65. The frame '64 is pivoted through arms 67 on the shaft 35 and is adapted to have a slight outward pivotal movement on an axis coincident with the shaft 35. As the swinging frame 64' carries shaft 33 of the carrying-spring winding gears 32, the latter are disconnected, as shown in Fig. 3, from the transmitting pinions of gears 31, to which the column actuator 26 is connected, whenever said swinging frame is imparted an outward pivotal movement about the axis 35 of the gears 34. The following described moving means are provided for moving the frame 64' to disconnect said gears. As shown more particularly in Fig. 2, a short transverse shaft 70 is ournaled in a bearing in the right hand side plate 22 of the fixed frame and this shaft projects through the outer casing and carries at its outer end an operating handle or lever 71, termed the cancelling-crank or zeroizing lever. Segment 72 is fixed upon the inner end of said shaft 70 and pivoted .to said segment 72 is a link 73 which is in turn pivoted to a depending lever 44 that is pivoted at 75 on the fixed frame. The lower end of said lever arm 44 is ivotally connected by means of a short lin 76 with an arm 77 loosely mounted on a transverse shaft 45 that is journaled in the fixed frame for rotation relative to the shaft 45. The arm 77 is provided with an engaging face 47 adapted to make contact witha second arm 46 fast on shaft 45. A short swinging movement of the cancelling device or crank 71 to the left will through the segment 72, link 73,

. lever arm 44, short link 76, arm 77 and rocker arm 46 impart a short rocking movement to the shaft 45 in a counter-clockwise direction, as viewed in Fig. 2, and clockwise as viewed in Fig. 3. Fixed on the shaft 45 and rotatable therewith are other rocker arms 81. (See Fig. 3.) These rocker arms 81 are pivotally connected with curved links 82 having slotted shifting pivots upon a transverse shaft 83. The forward end of each of said curved links 82 is provided with a pin 84 positioned within the spaced jaws 85 of the inner member 86 of a toggle. The said toggle member 86 is pivoted between its ends on a shaft 87 carried by the swinging frame hereinbefore described, and the outer end of each toggle member 86 is pivotally connected by a shaft 88 with the other member 88 of the toggle. The several toggle members 88 are pivoted on studs 89 mounted on the fixed frame and these toggle members 88 are respectively provided with depending arms 90 *ig. 6) having stop projections 91 adapted to engage the toggle members 86 and to limit their movement, as shown in Fig. 3, upon rocking the shaft 45 in a counter-clockwise direction as viewed in Fig. 7. When the swinging frame 64' is in such position that the gears 32 are in mesh with the gears 31, i. e., moved to the left from the position shown in Fig. 3, the normal position of the parts during normal operation of the calculating machine, the several toggles hereinabove described occupy the position illustrated in Figs. 6 and 7 and thereby hold the gears 32 in mesh with the gears 31 for normal key-driven operation by the keys 25.

On operation of the zeroizing lever 71 to effect cancelling, i. e., toward the left as viewed in Fig. 2, the link and lever connection hereinabove described imparts a counter-clockwise rotation to the shaft 45, and the latter in turn through the arms 81 shifts the curved links 82 toward the front of the machine. In so moving the pins 84 of the aforesaid curved links push down on the lower jaws 85 of the toggle members 86, thereby throwing the toggles past their dead centers from the position illustrated in Figs. 6 and 7 to the position illustrated in Fig. 3. As the toggle members 86 are pivoted at 87 to the respective plates 64 of the swinging frame, such movement of the toggles past their dead centers is accompanied by an out ward swinging of the swinging frame and a resultant detraining or displacement of the winding gears 32 from the gears 31. The entire detraining movement is thus accomplished positively by the operation of the zeroizing lever 71, the toggles deriving their motion in this direction from the manual movement imparted to the zeroizing lever. and the zeroizing lever 71 when released by the operator may, by reason of the loose mounting of 77 on shaft 45, return to its normal inactive position under the action of the spring for such purpose (Fig. 2) unless otherwise restrained from such return.

III

Connected with an arm 120 fixed on the left-hand end of the rock shaft 121 is a link 118 which cooperates through pin 116 with the arm 115 of the detaining toggle 109-110. The arm 110 of the toggle has a slotted pivot at one end on arm fixed on shaft 45, so that as 45 is rocked by 71, is pulled by 105 into osition to be thrown by spring 114 into togg e position of Figs. 9 and 10 whenever 71' is held in zeroizing 'osition. The arm 110 is pivotally connec with the arm 109, and has a stop 128 adapted to engage a stop bar 129. The arm 109 of the toggle is ivoted on a shaft 111 supported by the fixe frame of the machine, and is provided with a portion 112 terminating in a portion 113 pivoted on shaft 111 and has a spring 114 connecting ortion 112 with the fixed frame, as shown in ig. 3, and as clearly disclosed in Figs. 8, 9 and 10. Fi 8 is the normal condition of the machine an represents the position of the machine when gears 31 and 32 are in mesh as shown in Figs. 6 and 7 and a column actuator has been completely depressed and re- .stored on entering a number. Figs. '9 and 10 show the position of the toggle 109110 when the zeroizing lever is operated to detrain gears 31 from gears 32 to zeroize and with the toggle 109110 unbroken by 118116. The purpose of the detaining toggle 109110, when in the position shown in Figs. 3, 9 and 10, is to detain the rock frame 64' in its forward, zeroizing, position as shown in Fig. 3 after the zeroizing lever 7 2' has completed its function and has returned to its normal position after a zeroizing operation, and thereby constitutes holding devices for holding the gears 32 out of mesh with the gears 31 until the initial depression of a key 25 at the commencement of a next new calculating operation. The purpose of the link 118 and the bar 121 is to provide release devices for releasing the holding devices 109-110 from holding the gears 32 in zeroizing position by breaking the toggle 109-110 on such initial depression of a key 25 upon the commencementof a next new calculating problem and thereby allow the swinging rock frame to be free of the toggle action of the toggle 109-110 and to be returned by its spring 107 from its position shown in Fi 3 to its position shown in Figs. 6 and 7, when said rock bar 121 is pressed rearwardly by the first key actuation of a column actuator by a key 25. When this occurs the gears 31 and 32 are held in mesh for calculation by the making up of the toggle 86. To effect such rearward movement of the rock bar 121 each segmcntlever is provided with a break roll 126 for engagement with a break 123 individual thereto. Upon the depression of a segment lever its roll 126 presses its individual break 123 rearward. The rearward movement of the individual breaks 123 presses the bar 119 and arms 120 rearward to rock the rock bar 121. If the rock bar 121 in Fi 3 happens to be rocked counter-clockwise depression of a ke 25 when the zeroizin ever is manipulate to rock the shaft 45 c ockwise (Fig. 3) to swing the frame 64' and thereby disengage gears 31 and 32 from each other for zeroizing the numeral wheels 38, the arm 105 being under a stronger pull on lever 71 than the pull of spring 107, will pull the toggle 109-110 into center position to be thrown past dead center by the spring 114, but the arm 118 will prevent the toggle 109110 from being thrown past dead center by the spring 114 and, when the zeroizing lever 71 is released the spring 107 will .return the shaft 45 anti-clockwise (Figs. 3, 9 and 10) and cause the toggle 109-110 to assume the position in FigF8 for normal operation of the machine. urther, the amount of the ke 25 that caused the above operation will not e fully entered on the re 'stering wheels, due to the detrainment of 51 s gears 31 and 32; and if the key 25 has been only partially struck its actuator will be held down until its stroke has been completed. Consequently the gears 31 and 32 will reengage so that the error in the total previously zeroized which was caused by the reengagement 0 gears 31 and 32 before the column actuator restored to normal, will not have been noticed, and, if the actuator be held down by the key locks 78, as a result of a partial depression and release of a key, the error may again creep into the total for the next succeeding calculation, as a result of the premature entrainment action of the rock frame 64.

The present invention comprehends improvements whereby such possible premature entrainment action of the rock frame 64' is prevented during canceling, whenever the break 123 and arm 118 are in position to prevent the toggle 109-110 from making up, and whereby the toggle is caused to make up after the break 123 and arm 118 are released from their toggle breaking position, said improvements being effected by the following described mechanism.

Referring to Fig. 2 of the present drawings, an arm A is specially provided on the right-hand end of the rock bar 121 to which is pivoted by the bar 119 a link B, havin at its its forward end a slot B which is arrange to slide back and forth as rock bar 121 is rocked back and forth, when a column actuator is depressed and then rises to normal position, on a stud C fixed in a latch C pivoted on the tie-rod C which holds the frame-work of the machine together. A spring D is arranged to connect the link B and the perpendicular arm C together to normally keep the stud C at the rear end of the slot B of the link B. From this arrangement may be noted that whenever the rock bar 121 is rocked rearwardly by a break 123 and depressed segment lever 26 the latch C will be raised. The latch C constitutes a cancelling mechanism lock and is provided with a detent-end or bent lip G, above which is arranged a latch arm E integral with and forming part of the zeroizing lever 72. The result of such combination is that in the event an operator makes a partial key-stroke and leaves the segment lever depressed, the break 123 through its contact with the rod 119 of the rock bar 121 will cause said bar to rock rearward and hold it rearward until the segment lever 26 rises to its normal upper position again. This rearward rocking of the rock bar 121, as has been explained, will cause the raising of the latch C, thus bringing the detent-end G into contact with the latch arm of the lever 72, normally located just above it. Thus if the operator should cancel the machine while a segment lever lock was so set with the segment lever depressed the latch arm E oflthe zeroizing lever 72 in swinging rearward will depress the detent-end G of the latch C, causing the stud G to move in the free slot B of the link B and the spring D to give way until the latch arm E has passed the latched detent C, when the spring D will cause the vertical arm to be drawn rearwardly and the latch C to engage the front or latch-face E of the latch arm E, as shown in Fig. 5, and prevent the return of the said zeroizing lever 72, and shaft 45 by spring 107. Thus the toggle 109110 is held. through action of 121, 119, B. C, E. 73, 44, 76, 77. 47, 46, 45, 105 and 110 against spring 107, in toggle forming position for spring 114 to throw past dead center. The toggle 109110 .is maintained in this position and the rock frame 64 containing the accumulator mechanism is held detrained until the segment lever or actuator 26 has returned to its normal position. at which time the roll 126 will allowbreak 128 to return to its normal position again. and the rock bar 121 to spring forward and thus allow links B and 118. which are operated together simultaneously. by 121. to move forward. When link 118 thus moves forward it releass the detainin toggle 109-110 and. since this toggle is being held in toggle forming position bv means of the above described mec b anism including 121. B. C. E. 45 and 105. the spring 114 throws the toggle past its dead center into the position shown in Figs. 3. 9 and 10 to lock the rock frame 64 and shaft 45 against the return entrainment movement.

under spring 107 before the E can restore to normal upon the disengagement of the latch detent C from the latch-face E of the arm in Figs. 3, 9 and 10 until another calculating operation is be at which time, as soon as any key 25 is epressed, its column actuator causes roll 126 to press the break 123 rearward which engages and moves rod 119 rearwardly which rocks bar 121. The rocking of bar 121 pulls the arm 118 rearwardly which breaks the detaining toggle 109110 from its position as shown in Figs. 3, 9 and 10, to its position shown in Fig. 8, which Fig. 8 position permits the rock frame to return to the position shown in Figs. 6 and 7 and thereby efiects entrainment of the gears 31 and 32 of the accumulating gearing before the column actuator starts rising to actuate the accumulator mechanism.

The invention as hereinabove set forth is embodied in particular form but may. be variously embodied within the scope of the claims hereinafter made.

I claim:

1. In a multiple-order key-driven calculating machine, in combination: accumulator mechanism including numeral wheels and trains of gearing; column actuators therefor; driving keys therefor; cancelling mechanism operable to detrain said gearing; means for detaining said gearing in detrained position; a shaft adapted to be moved when a column actuator is out of normal position; a member connected to said shaft and operable thereby to prevent said detaining means from further detaining said detrained gearing; a cancelling mechanism lock between said shaft and said cancelling mechanism, said lock connection being operable by said shaft when said shaft is in moved position to hold said cancelling mechanism in cancelling position until the column actuator that has moved said shaft has returned to normal position and being adapted to so hold the cancelling mechanism until after said shaft has moved said member to permit said detaining means to detain said detrained gearing whereupon said lock releases said piapicelling mechanism; substantially as speci- 2. In a multiple-order key-driven calculat- 4 ing machine, in combination: accumulator mechanism including numeral wheels and gearing therefor; actuating mechanism therefor; driving keys therefor; cancelling mechanism operable to detrain said accumulator mechanism gearing and then return to normal position; means for holding said accumulator mechanism gearing in its detrained position while said cancelling mechanism returns to normal position; a shaft operable by said actuating mechanism to release said accumulator mechanism gearing from said holding means; and a cancellin 'mechanism lock between said shaft and mi cancelling mechanism, said lock being moved into locking position by said shaft to hold said cancelling mechanism in cancelling po-' sition while the holding means is prevented by said shaft from completion of its holding position.

3. In a multiple-order key-driven calcul lating machine, in combination: accumulator mechanism including numeral wheels and trains of gearing; column actuators by means of which the motion of a key is communicated to the accumulator mechanism; driving kc s therefor; a cancelling mechanism operab e to detrain said gearing; a detaining toggle operable to detain sald aring in detrained position; a rock s aft normally pressed forward; a link connected with said rock bar and operable to engage and break having a slot therein to receive said stud to provide a sliding connection between said link and said latch; a spring connecting said link and said latch, said spring normally tending to keep said stud at the rear end of said slot; and a detent on said latch operable to engage and hold said cancelling mechanism when said rock shaft ispressed rearwardly; substantially'as specifi 4. In a multiple-order key-driven calculating machine, in combination: accumulator mechanism including numeral wheels and gearing therefor; actuating mechanism by means of which the motion of a key is communicated to the accumulator mechanism gearing; driving keys therefor; said accumulator mechanism gearing being mounted to move with respect to said actuating mechanism; cancelling mechanism operable to move said accumulator mechanism gearing and then return to normal position; means for holding said accumulator mechanism gearing in its moved position while said cancelling mechanism returns to normal position; a shaft operable by said actuating mechanism to release said accumulator mechanism gearing from said holding means; a pivotally mounted latch for holding engagement with said cancelling mechanism; a link pivotally connected with said shaft and slidably connected with said latch and spring means connecting said latch and said link; substantially as specified.

5. In a calculating machine, in combination: registering devices; actuating mechanism for said registering devices; numeral keys therefor; zeroizing means comprising a cancelling device for disengaging the gearing for return of the numeral wheels to zero; devices for holding the said gearing disengaged after a zeroizing operation and until another actuating operation is performed; and means operable by the actuating devices for holding the cancelling device in its gear disengaging position whenever the actuating chine, zeroizing means for disentraining or swinging the gears out ofengagement, holding means operable by the zeroizing means for keeping the gears separated, and o rable by the actuatin devices of the mac e on operation thereo for releasing the gears of said holding means so that the gears will remesh again, in combination: means operable by the actuating devices to'hold said zeroizing means in zeroizing osition to revent the re-engagement of t e gears w enever any actuating mechamsm should pre vent operation of said holding means during zeroizing operation.

7. In a calculating machine having registering devices, actuating devices for said registering devices connected to the registering devices by gearing keys for said actuating devices, part of said gearing bein held in the fixed frame of the machine am? other of said gearing being held in a movable frame so as to permit separation of said gearing, springs connected with the aring mounted in the movable frame ten ing to turn the numeral wheels backward to zero, movin means for moving the movable frame an thereby disengage the gearing so that the springs may turn the numeral wheels back to zero, holding devices for holding said movable frame with the gears disengaged, releasing devices controlled by the actuation of the actuating mechanism for releasing said holding devices from holdin said frame and thereby efi'ecting a remes ing of the gears again whenever the actuating mechanism is set in motion after a clearing or zeroizin operation by said' moving means, in com ination means operable by the actuating mechanism to prevent the said remeshing of the gears by said releasing means whenever any of the actuating mechanism is held in action during a clearing or zeroizing operation by said moving means.

8. In a calculating machine, in combination: a plurality of ordinal keys; registering wheels; actuating devices for said registering Wheels; canceling means operable to detrain said registering wheels; means operable by said canceling means to hold said registering Wheels detrained while the canceling means returns to normal; release means operable by the actuating means on actuation thereof to release the holding means from further detrainment action; and canceling crank looking means operable by said actuating means my hand.

JOSEPH A. V. TURCK.

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