US2080192A - Verifying punch machine for duplicate cards - Google Patents

Description

May 11, 1937. w. K. YOUNGBERG VERIFYING PUNCH MACHINE FOR DUPLICATE CARDS 5 Sheets-Sheet 2 Filed NOV. 26, 1935 m6 NU W .Su m N1 Iimlw. F11 s Vf wma.

May 11, 1937. w K YOUNGBERG 2,080,192 V VERIFYING PUNCH MACHINE FOR DUPLICA\TE CRDS Filed Nov. 26, 1935 4 5 sheets-sheet s Mayu, 1937. W K.YOUNGBERG 2,080,192

VERIFYING PUNCH MACHINE FOR-DUPLICATE CARDS Filed Nov. 26, 1935. 5 Sheets-Sheet 4 Fm; Ct

May 1 1, 1937.

vERIFYING runen MACHINE Foa' DUPLI Filed Nv. 2s, 1955 FTC. H

W. K. YOUNGBERG GATE CARDS 5 Sheets-Sheet 5 WALTER K. YoNeeR IN NTO BY IATTORNE l Patented May 11, 1937 PATENT OFFICE vEaIFrlNG PUNCH MACHINE Foa noru- GATE calms l Walter K. Youngberg, Meriden, Conn. Application November 26, 1935, Serial No. 51,707

65 Claims.

My invention relates to verifying punch machines for duplicate cards.

It has heretofore been the practice in punching duplicate cards for use in duplicate card systems to have-the different cards of the several pairs punched by different operators working from the same data in order to minimize the possibility of repeating the same error. Thus, in establishments of the large size usually using such card systems, as for example an insurance company, a large group of girls, each operating .a similar punching machine, is required, with half o f the girls punching one half oi the several pairs and with the remainder of the girls punching the other half. Nevertheless, errors have occurred as the different operators, while not apt to make the same error, will make different errors, and verification of the cards has thus been necessary before the same could be used. Ac-

cordingly, after the cards are punched, it has been the practice to have the sa-rne compared manually, or in a number ofv separate machines, or at a central point by asingle machine of large capacity, such, for example, as that described and claimed in my Patent No. 1,989,049, patented January 22, 1935. As a result of the above practices, in such large oiices it has been necessary not only to require the services of a large number of girls for punching and verifying, but also to require the provision and maintenance of a large number of diiferent machines, including one for each punch operator and either a number of small verifying machines, or a large and expensive verifying machine such as disclosed in my patent. y

My invention has among its objects to enable a given number of duplicate cards to be punched and veried with markedly reduced expense. A further object of my invention is to make it possible for the cards to be verii'led during the punching operation in such manner that the I subsequent verification is eliminated with a rel sultant reduction in both labor and equipment required, all whereby the need for the services of the girls heretofore required in manually verifying and all need for any separate verifying machines are made unnecessary. A further and more particular Objectis to provide an improved verifying punch machine with which one half of the ordinary punching staff may be equipped, and which is adapted not only to be used in the ordinary manner' as a punch but also to function as a verifying machine so that, when thesecond half of the cards has been punched on these machines, all of the cards are ready for use without the further separate veriiication heretofore necessary'. Other objects of my invention are to provide such an improved punching machine having improved controlling mechanism. Thus, for example, I provide improved means whereby the punching keys of the improved machine are so controlled as to lock all of the keys thereof except the one which agrees with the punching on the original card, and further provide improved controlling means locking themachine in case an erroneous double punch has occurred on the original card, while also making impossible a double punching error by the operator of the improved machine, all whereby errors in either the original or the duplicate card may be detected while the duplicate card is being punched. Stillv other objects of my invention are to provide an improved machine having the aboveand other advantages and improved control and structural features, hereinafter described, and one which is nevertheless capable of normal and rapid operation by a punch machine operator, while also being of such inexpensive construction as to make it possible, through the reduction in labor costs and equipment, very quickly to eiect a substantial saving. 'I'hese and other objects and advantages of my invention will, however, hereinafter more fully appear. l In the accompanying drawings I have shown for purposes of illustration two embodiments 30 which my invention may assume in practice, the same being shown herein in one form as embodying a preferred type of electrical sensing mechanism therein and in another form as having a preferredy type of mechanical sensing mechanism included therein.

In these drawings.-

Fig. 1 is a plan view of a combined verifying punching machine of the electrical type constructed in accordance with my improvements;

Fig. 2 is a longitudinal sectional view on line 2-2 of Fig. 1;

Fig. 31s a sectional view on line 3-,-3 of Fig. 1;

Fig. 4 is a front end view of the machine as seen from the left in Fig. 1`; 45

Fig. 5 is a detail sectional view on line 5 5 of Fig. 2;

Fig. A6 is a detail sectional view on line 6-6 of- Fig. 5;

Fig. 9 is a VView similar to Fig. 2 showing a portion of a machine of a modified construction including a mechanical type of sensing mechanism; Y

Fig. 10 is a view of the latter machine and similar to Fig. 3 and showing cooperating devices used in the mechanical sensing mechanism;

Fig. 11 is a wiring diagram of the illustrative form of this modified controlling and locking mechanism;

Fig. 12 is a detail view showing means for adapting the construction shown in Figures 1 to 8 for operation as a simple punching machine, and

Fig. 13 is a like detail view showing like mechanism applied to the modified construction shown in Figures 9 to l1.

Referring first to the machine shown in Figs. 1 to '7, it will be noted that I have therein illustrated a machine adapted to receive and feed through at one side of the same, i. e. at the side remote from the operator and indicated at the top in Fig. l, an original previously punched card, hereinafter called the original card, indicated at O, and also adapted to receive and feed simultaneously through the other side adjacent the operator, shown at the bottom in Fig. 1, a card to be duplicated, hereinafter called the duplicate card, indicated at D, as the machine operator punches the duplicate card D; this punching operation being elected by operating keys, generally indicated at K, which are under the control of electric sensing mechanism operating on the original card O and including brushes generally indicated at B in Fig. 3 and hidden in Fig. 1, so that the two cards O and D are verified while punching the card D, all as hereinafter more fully described.

Referring more particularly to Fig. 1, it will be noted that the machine comprises a frame, generally indicated at |,having therein parallel original and duplicate card passages 2 and 3, respectively, both of whichA are lower than either of the side walls 4 of the frame or a-central portion 5 on the latter disposed between the card passages 2 and 3 and parallel thereto. As shown, the card passages 2 and 3 are provided with card removing recesses 6 and 'l at their left-hand or discharge ends, and each of the same is also provided with a longitudinal groove 8. In these grooves 8 are disposed card holding clips 9 engaging the front ends of the cards and card holding clips I0 engaging the rear ends of the cards. Further, these clips-9 and IIJ-are movable in the grooves 8 longitudinally of the frame I with a carriage, generally indicated at C; the sets of clips 9 and I0 herein being carried-on transverse arms II suitably attached to and movable during punching of the card D, with the carriage C as the latter is moved step by step toward the left when, subject to the control of the brushes B (Fig. 3), successive keys K are operated.

Considering the carriage mechanism C, it will be observed that the same includes a rack I2 movable in a central slot I3 in the portion 5 of the frame and having an exposed upper rack surface which has teeth I4 on the right-hand end thereof, these teeth herein being shown as slanting tothe left and extending over only as much of the rack as necessary to effect the desired carriage movement. Further, this rack member I2 is mounted in guides I5 in the frame portion 5 and has a spring I 6 housed under its right-hand end in a chamber I1 and acting` against the right-hand end of a rod I8, herein of square cross section and extending the full length of theframe and projecting from the left-hand end thereof where it carries an upstanding operating member I9. Further, as shown in Fig. 2, the rack I2 is fixed to and movable with la member 20 disposed beneath the rack and between the supports 2| of the frame I. This member herein is connected through a. depending lug 22 and a suitable strap 23, with a coiled or helical spring 24 which is, in turn, mounted on a suitable spool 25 rotatably mounted beneaththe underside of the frame I, herein at a point adjacent the left-hand end support 2|. Attention here is further directed to the fact that both of the card clip arms are suitably fixed to the rack member |2, as indicated at 25. As a result of this construction, it will be noted that the carriage C will be continually urged to the left under the action of the spring 24 in such manner as to cause both original and duplicate cards O and D to be moved to the left when the rack I2 is released during the punching operation for step by step movement. as hereinafter described.

Operatively associated with the rack teeth I4 is improved mechanism for effecting this step by step movement as the proper keys K are operated, this mechanism herein being controlled by the brushes B so that the carriage C may not advance unless the punchings already made in the original card O correspond to those which the 3 operator attempts to make in the duplicate card D. Further, unless the sensing mechanism, including the hidden brushes Band acting upon the similarly hidden original card O, indicates agreement between a punching in the original card and the supposedly corresponding punching which the operator seeks to insert in the duplicate card by operating any particular key K, a feeding movement of the carriage and cards cannot be effected by pressure on any key K other than the particular key corresponding to the punching of the original card O. Accordingly, when the operators data indicates that the key K she has tried to depress -to punch the duplicate card, is the correct key, and yet the key is locked and the carriage C will not feed, the operator knows that there is an error in the punching of the original card, while such a recheck of the data would also reveal the error if being made by the operator.

As the sensing mechanism controls the keys K, this sensing mechanism will, accordingly, be first described. .As shown in Fig. 3, it is mounted in a suitable casing 21 disposed over the original card 'passage 2 slightly nearer the right-hand end thereof. This casing herein has a brush operating chamber 28 therein and also a removable cover 29, while being of such dimensions as to hide a considerable portion of the card O. As shown, the casing 21 also has a bottom lip 30 suitably formed or attached thereto and provided with a slot 3| near the left-hand wall of the chamber 28 and so disposed above the card passage 2 that the original card 0 may pass in under this slot 3|. Further, it will be observed that a series of brushes 32 of a construction usual in electric sensing mechanisms, is so mounted in the chamber 28 that in their down or operative position these brushes may engage the top surface of the card being fed, and one or more of these brushes may thus project through any punching or punchings in the column on the card then under the slot 3|. Herein, ten such brushes 32 are provided, corresponding to the digits 1 to 9 and 0, and all of these carried in a U-shaped brush holder 33 pivotally mounted ox a transverse pivot 34 in the chamber '28. Further, as illustrated, a coiled spring 35, acting'beposition, wherein the brushes do not engage the card. Also, a plunger 31 operated by mechanism hereinafter described, is adapted to engage the arm 36 and raise the latter and thus lower the brushes 32 into the operative position so that if a. punching is in the column of the card then in the slot 3|, the corresponding brush 432 will engage a conducting strip 38 which extends along beneath the slot and is mounted in suitable insulation 39 in the bottom surface of the card passage. .Attention here is further directed to the fact that each brush is connected by a conductor 40 to a magnet 4| controlling the keys and carriage feeding mechanism. Thus, it will be evident that with the brushes 32 in their down o'r operative position, whenever any brush passes through a punching in the original card, current will flow from the conducting member 38 through that brush and conductor 40 to its connected magnet 4| in such manner as to enable the corresponding key arid the carriage C to be controlled in an improved manner through improved mechanism hereinafter described.

This mechanism is shown in Fig. 2 and inasmuch as its structure is the same for each of the keys K corresponding to 'the digits 1 to 9 and 0, a description of the same inconnection with the single key illustrated in that gure will sufce. Referring more particularly to Fig. 2, it will be noted that the keys K are mounted for usual vertical operation in a casing 42, generally corresponding to .the brush casing 21 and having a cover 43, generally corresponding to the cover 29;

the two casings, if desired, being parts of a single casing separated by a suitable septum, and the two covers being integrally united. Herein, further, it will be noted that the space in the casing 42 is divided into three chambers 44, 45 and 46 by a bottom extension 41, generally corresponding to the portion 30 of the casing 21 and herein having an upwardly extending portion 48 which engages and supports a horizontal plate or septum 49 supported on lugs 50 on the casing 42.

- Thus, the chamber 44 is formed above the member 49, and chambers 45 and 46 are formed in rear and in front of the member 48. In these chambers, the operating and controlling elements for the several punches for the card D and the several keys K for operating the same, as well as the feeding mechanism for the carriage C, are disposed and interconnected in an improved manner. i

Referring first to the punching mechanism, it will be noted that the key K is vertically disposed and movable through an aperture 5| in the cover 43 while its lower end is similarly movable through an aperture 52- in the plate 49. As shown the key K also has a-transverse slot 53 therein just below the lco'ver 43 and provided with rounded end portions and the rear end of a punch operating lever 54 extends through this slot. -Thus, this lever' may be moved downward about the lever pivot 55 at the front of the cas- As shown, a coiled spring 56 is also disposed around the lower' end of the' key between' the Y lever 5 4 and the' plate 49 so that this spring is of the punch 51 to' punch thecolumn in the duplicate card D which is disposed in the card passage 3 beneath the member41. To effect the!A automatic return of the punch 51 to its raised or inoperative position, a coiled spring 60 is also disposed around 'the lower end of the punch` beneath a shoulder 6| thereon, with one end of the spring acting on this shoulder and the other abutting a suitable collar on the member 41. Thus, when the key K is freely operable, the depression of the same will cause the punch 51 to be depressed to insert a punching in the duplicate card, corresponding in position to the key which is depressed, while as soon as the key K is released, the punch will be returned to its normal or inoperative raised position by thespring 60.

To control the movement-of the `key K and lock the same against operation when an error.occurs in the original card O or is about to be made in the duplicate card D, i. e. when it is attempted to depress the wrong key K, improved controlling connections are provided herein for the key. These are controlled by the magnet 4| heretofore described. Here, the magnet 4| is provided with an armature 62 mounted on a pivot 63 beneath the' free end of the lever 54. Further, this armature 62 is provided with a laterally extending lug 64 thereon which is adapted when the magnet 4| is deenergized, to underlie the end of the lever 54, as shown in Fig. 2, while the armature 62 is normally held in the position illustrated in that figure by a coiled spring 65 connected to an upstanding support 66. Accordingly, unless current is flowing through the magnet 4|, the armature 62 is disposed in the position shown in Fig. 2 by this spring 65, and, downwa'rd depression of the free end of the lever 54 being thereby made impossible, neither the key K nor its corresponding punch 51 can be operated. On the other handfif there is a corresponding punching in the original card O and, accordingly,

that lever and that magnet, will be free to be depressed to operate its punch 51 and thereby punch the duplicate card D in a position corresponding to the punching in the original card O.

Associated with the mechanism above described riage stationary in the event of a double punching in'the original card. Here, it will be noted.

that this mechanism includes a second armature 61 (Figs. 1 and 2) o n the opposite end of the magnet 4| from the'armature 62 and controlled by the magnet and a spring 68 and movable about P a pivot 69 while having a lower rack holding A'pawl 19 movable therewith about that pivot. This pawl 1U is accordingly moved into holding engagement with the rack teeth I4 each time the magnet is energized, insuch manner as to hold A is also improved mechanism for holding the cara single plate, or universal bar, extending across A behind all of the magnets 4I and that a single spring 68 acts on this plate, this spring being sufliciently strong to swing the holding pawl 15 out of holding position, but not sufficiently strong to overcome the pull of any magnet 4I. Further,

it will be understood that this pawl functions only to prevent a feeding movement of the rack I2 when there are two punchings in the original card O, as hereinafter described, and has no feeding function, the feeding of the carriage C being effected by wholly distinct feeding mechanism hereinafter described.

This feeding mechanism includes escapement mechanism adapted to eiect a slight forward movement of the carriage C when the key K is depressed and just before the punch 51 is forced through the duplicate card, and also a further and longer forward movement of the carriage C as the key K is returned to raised position by the spring 56. In the illustrative construction, each of the levers 54 overlies a common crossbar 1I on a U-shaped pivoted member 12 disposed within the chamber 463 and pivoted at 13. Herein, it will also be observed that this member 12 is provided with a depending portion 1li thereon engageable with the forward end of a pawl 15 pivoted at 16 above the rack I2 and having a coiled spring 11 connected to the same in advance of its pivotv and also attached at its opposite end to the cover 43 in any suitable manner. In the form illustrated, this pawl 'I5 is also provided with a pair of teeth 18 on its rear end which are adapted to be disposed on opposite sides of any tooth I4 on the rack I2, while the opposite end of the pawl is provided with a single tooth 19 adapted to be lowered into engagement with the teeth I4 on the rack when the teeth 18 are raised.

Accordingly, whenever any key K is unlocked and depressed, the depression of the same will cause a downward. movement of the lever 54. Since this lever engages the portion 1I on the member 12, the latter will in turn swing about its pivot 13, and, through the extension 14 on the member 12, rst cause the pawl 15 to have its tooth 19 engage with the teeth I4, and, thereafter, cause the teeth 18 on the pawl to disengage the teeth I4. Thus, after the disengagement of the teeth 18, the rack I2 and carriage C will be moved to the left by the spring 24 through a distance equal to a very small part of thedistance between the centers of adjacent columns on the cards O and D, i. e. until further forward movement is prevented by tooth 19, when the selected column of the duplicate card will then be accurately centered under the punches 51. Further, it will be apparent that when pressure on the. key K isreleased, i. e. when one of the punches 51 is still in the card D, the key K is thereupon urged upward by its spring 11 in such manner as to release the tooth 19 from the rack and thus cause the teeth 18 to re-engage the rack, which in the interval between this release and this re-engagement, has been moved with the carriage C by the spring 24 through the remainder of the distance between adjacent column centers. In other words, each time that a key K is depressed to effect punching in a column on the duplicate card D, the whole carriage C, which carries both the duplicate card D and the original card O, will be moved forward a total distance corresponding to one tooth I4 on the rack I2, in such vmanner as to bring a new column on the original card into registry beneath the brushes 32 and a new column on the duplicate card D into proper corresponding position ready to be centered under the punches 51 on depression of the next key. Thus,'the mechanism is ready to verify another column on the original card O and punch another column on the duplicate card D; this operation, of course, being repeated until the original card has been completely veried and the duplicate card both completely punched and verified. f

Cooperating with this mechanism is also improved mechanism controlling vthe circuit of the magnet 4I and adapted to return the key locking mechanism to its normal locked position, while releasing the holding pawl 10 from the rack teeth I4, both of these operations occurringl before the key K has completed the actuation of the punch and escapement mechanism.` This mechanism is operated by the lower end of the key K in the course of the downward movement thereof and includes a switch disposed beneath the plate 49 and comprising a stationary contact 80 connected in the circuit of the magnet 4I and a movable spring contact SI normally cooperating with the stationary contact 80. The free end of this spring contact 8| extends beneath the end of the key K below the aperture 52 in the plate 49. Accordingly, when the key K has been depressed and before it has been depressed sufliciently to operate the punch 51, and also before it initially operates the escapement pawl 15, the end of this key engages the end of the movable contact 8l and thereby breaks the circuit through the contacts 80, 8|. This opens the circuit of the magnet 4I and thereby eiects the release of the -armatures 62 and 61 by the magnet 4I As a result, the armature 62 is pulled back by its spring 65 ready to resume its locking position shown in Fig. 2 when the key K has returned to its normal up position. Further, the armature 61 is also returned by its spring 68 to the position shown in Fig. 2, wherein the holding pawl 1li is released from the teeth I4 of the rack I2.

The latter rack when it completes its full forward movement of one tooth, is of course then held in its new position by the re-engagement of the teeth 18 on the pawl 15 with the teeth I4 on the rack. Further, the whole mechanism is 'again under the control of the brushes 32 which function as heretofore to keep all keys K locked unless there is a punching in the column of the original card O corresponding to the punching in the duplicate card D which would be formed by punching the particular corresponding key K. However, it will be noted that in the event that there are two punchings in the same column of the original card, and therefore two brushes 32 releasing two keys K, the carriage will continue tobe locked if only one of these keys K is operated. Under such conditions, the magnet 4I of the other key then will continue to hold holding pawls 10 in engagement with the teeth I4 of the rack I2. Thus the operator being unable to advance the carriage after punching the correct lkeyindicated by her data, will know that there is a double punching in the original card and -accordingly make the necessary correction.

Athere is no punching in the column of the origi- CII nal card O whichis beneath the brushes 32. This "'indicated'atfS, isan additional key inde- `V`pendent"of the keys K'which correspond to the 'digits v1 to 9 and 0. Further, while certalnof noted thatV the 'key S is herein the key nearest the operator." Furthenas shown in Fig. 8, it will be observed that this key is provided with an opening 85 therein, corresponding to the opening 53, land through which a lever 86, corresponding to Vthe llever 54, is extended, while a coiled spring 81,corresponding to the coiled spring 56, is disposed beneath the lever 86 surrounding the lower end of the key. Here also, the lever 86 is adapted to engage bar 1|, and thereby to actuate the escapement pawl 15, which in turn is connected to the spring 11, all as heretofore described. However, in this mechanism there is neither a magnet, nor a punch, nor a locking mechanism, nor a switch associated with the key S such as heretofore described as associated with the several keys K. Accordingly, when there is no punching in any column of the original card and all the keys K corresponding to 1 to 9 and 0 remainllocked, this space key S may be depressed to effect a forward spacing operation of the carriage C and both cards O and D and thus enable the duplicate4 card to have an unpunched column corresponding to the unpunched column in the original card. Here, however, it will benoted that, if a hole is punched inthe original card and the operator of the machine erroneously operates the space key S, that key, while being depressible,

will not cause any movement of the carriage C.

Instead, the latter, still being locked by the magnet 4I, on account of the universal bar 61 which controls the particular key K corresponding to that punching and brush 32, only the operation of the correct key to effect a corresponding punching, will release the holding pawl 10 associated with that magnet and thereby permit the carriage to be moved.

With the various mechanisms so far described, it will be evident that the original andV duplicate cards in the machine may be verified while the latter card is being punched. Further, it will be evident that whenA the duplicate fcard has been completely punched, the carriage C will have advanced to such a position on the frame I- as to cause the forward ends of the cards to be over the recesses 5 and 1 and thereby permit both cards O and D to be readily withdrawn from 'their holders I I. When the cards have been thus removed and a new original card and a new unpunched duplica-te card have been inserted in their places, it will also be observed that I have herein provided improved mechanism' for returnirlg the carriage to its initial position at the right of the frame in Fig. 1 ready to begin again the verifying and punching operation in connection with these cards. Thismechanism` is operated by 7. the opstanding operating member I9 heretofore mentioned and includes improved mechanism for A raisingthe brushes 32 from their operative posi- `tion shown in Fig. 3, so that they will be out of the path 'of the new original card as the carriage C is mevedl back to initial position.

Rzfcrring more particularly to this mechanism, 'when the operating lever I3 is pushed to the right from the position shown in Fig. 2, the rod I8 will be movedA therein to compress the spring I6. Further, it will be observed' that'the rod I8 is laterally through a slot 92' in the bottom of therack I2. "Ihus, when pressure is applied to the operating member I9 and the spring I 6; is compressed, the rod I8 is free to slide inside of the rack l2 until the fin 9| is stopped by the righthand wall of theslot 92. Further, as the fm 9| is so moved, the outer edge of the` same presses against a wedge 93 carried on al swinging member 94 pivoted on pivots 95 and normally held in the elevated position shown in Fig. 6 by coiled springs 96 connected between the member 94 anda xed part of the frame. Moreover, it will be observed that when the member 94 is in the upright position shown in Fig. 6, the free edge 91 of the latter engages and supports a rounded bottom portion 98 on the vertically disposed and movable pin 31 which, in turn, supports the arm 36 on the brush holder 33 in such manner as to hold the latter in the position shown in Fig. 3 while tensioning the spring 35. Accordingly, when the member 9| engages the wedge 93, the member 94 is forced to the left about its pivots 95 from the position shown in Fig. 6 while tensioning the springs 96, in such manner as to release the pin 31 and thereby permit the latter to drop down- ,Ward to the limit established by a collar its pivot 34 and raise the brushes\32 out of the path of the original card. Further, it will be evident that the brushes will be maintained in this raised position and out of contact with the original card so long as pressure on the operating member I9 is continued; and as thecarriage C and the rack I2 move to the right to their initial position wherein the new original' card O and new duplicate card D are in their proper positions under the slot 3| and the punches 51 respectively. Then, vwhen the operating member I9 is released, the parts will be automatically returned to the position shown in Fig. 6 due to the action of the connectedY springs I6 and 96, and the pin 31 will again be forced up under the arm 36 of the brush holder 33 in such manner as to lower the brushes 32 into their operative or sensing position illust'rated in Fig. 3. i

The operation of the complete machine will next be considered. Assuming that the carriage `is in the position illustrated in Figure 2 and that an original card is under the brushes 32 and a duplicate card under the punches 51, it will be evident that no key K will be free to operate its corresponding punch 51 unless the brush 32 corresponding to the particular key extends through a .punching in the original card; each lever 54 otherwise being held against depression by the lug 64'on the armature 62 wheny the latter is held in its inoperative position. Should, however, one of the brushes 32 extend through a lpunching in the original card O, the corresponding key K will be released as a result of current release of the key K. Forward movement of the `key K also depresses lever 54 which depresses the member 12 and thereby pushes down the front end of the escapement pawl 15 in such manner as to engage the tooth 19 with the rack and cause the teeth 18 to disengage the latter. Thus there will'be a slight forward movement of the carriage C. Further, lt will be noted that this forward movement will occur just before the punch 51 is forced through the duplicate card. Moreover, it will be apparent that when the circuit of the magnet 4| is broken, the armature 62 thereof will be swung back by its spring in such manner as. to enable the lever 54 to be automatically held in its up position after this lever and the key have been automatically returned thereto by the spring 56. Following release of the key K, the carriage C will be fed forward or to the left an additional amount so that the total of these two forward movements correspond to one tooth on the rack I2 and one column on the cards O and D. This operation will be continued so long as there are punchings in the original card and the operator in punching the duplicate card strikes the keys accurately. Should, however, a key not be depressible, the operator knows either thaty she is attempting to make a mistake or that a mistake has been made in the original card. However, note that the operator ofthe machine is not permitted to make her mistake by reason of the locking of her key. Thus checking back on her data and determining that she is punching the right key, the

operator knows definitely that there is an error in the original card and can, accordingly, take the necessary steps to correct it. Here attention is also directed to the fact that if the original card 0 should happen to be double punched as sometimes occurs, two magnets 4I, instead of one, would be energized and both magnets would actuate the holding pawl 10 and accordingly double lock the carriage I2. Accordingly, if the operator punching the duplicate card, sought to punch the latter correctly, even if one of the punchings in the original card was correct, the carriage still would not be released, thereby clearly indicating to the operator not only that there was still an error in the original card but that it consisted in a double| punching in the column on which she was operating. Here note alsov that with my improved mechanism, the operator cannot double punch the duplicate card since only one key is released at a time over any column If, in the course of the punching of the duplicate card, it appears that a column should be unpunched, it will also be evident that the operator may readily eiect the desired spacing by merely depressing the key S and then resuming ordinary punching on the next column;

this key K acting to advance the carriage irrespective of whether all the keys K remain locked, as they would ln the absence of any punching in the column through which the brushes 32 might make contact. with the conducting plate 38. When the duplicate card has been completely punched, it will be evident that both the original and duplicate cards may be removed readily when the same are over: the removable apertures 6, 1.

= Further, it will be evident that thehew original and duplicate cards may be then inserted and the carriage C, then moved backward by pushing the member I9 to the right and thereby also operating the brush raising mechanism'including the mechanism will then again be ready for a repetition of its cycle of operation described above.

In Figures 9, 10, and 1l I have illustrated a modified construction wherein my invention includes mechanical feeler mechanism, as dis` tinguished from the electric brushes '32 heretofore described, while still enabling thef advantages heretofore described to` be obtained. Inasmuch as this structure involves only modications in the feeler mechanism and the key controlling mechanism including the circuit connections, it is unnecessary to describe more than these and their new operation in the mechanism.

Referring more particularly to this modified structure, it will be noted that instead of brushes 32, I provide reciprocable sensing fingers or plungers IIO, ten in number, and corresponding to the brushes. These iingers are adapted to move through apertures I I I corresponding to the apertures 59 heretofore described and disposed over each column in the original card O. Each of these lingers Ill) is normally pressed down by a coiled spring (I I2 so that itwill be projected thereby through any punching in the original card. Further, as shown, the upper ends of the fmgers are provided with collars or heads H3 reciprocable in a casing H4 and acting to compress a coiled spring |I5 in that casing, while a Bowden cable IIB is fixed to the fingers through the head ||3 and extended through a suitable sheath I I1. The opposite end of the Bowden cable extends through a suitable sleeve I|8 disposed adjacent the free ends of the levers 54 and operates improved latch mechanism adapted to control the latter lever. Herein, it will be observed that a reciprocable latch member I|9 having a latch end I2|l is reciprocably mounted in the sleeve IIS and is also provided with a chamber I2| in which a light coiled spring |22 is disposed and ,acts against a suitable collar I 23 on the end of the Bowden cable IIB. Further, it 4will be observed that each nger IIIl carries a pin |24 received in a suitable slot |25 in a lever |25 pivoted at |21 on a transverse shaft; the parts being so disposed that the spring ||2 acts on the lever |26 in order to project the sensing finger down through any punching in the original card. Thus, it will be evident that whenever there is a punching in the original card, the corresponding sensing finger III) will he projected down through this punching in such manner as, through'the Bowden cable H6, to withdraw the latch |20' from beneath the corresponding lever 54 and accordingly release the corresponding key K for operation to effect punching of the duplicate card by mechanism corresponding to that heretofore described. Should, however, there be no punching in the original card and the operator attempt to de- -press key K, operation of this key will be premechanism.

net |32 connected across the line, as shown in Figure 11. This magnet, in turn, acts upon the lever |26 as an armature. Thus, with a holding pawl |33 shown in Fig. 9 (for facility of illustration dotted in a phantom view in Fig. 10) fixed to the shaft I 21 and with a key |34 likewise fixed to that shaft and movable in cut out sections |35 in the end of each lever |26, it will be evident that the sensing fingers ||6 will normally tend to hold the holding pawl 33 in holding position on the rack |2 against the action of the spring |36. However, when the magnet |32 is energized, as it will be upon each depression of the key K, the lever |26 will be pulled up toward the magnet and the holding pawl I 33 will be released by its spring |36. While the holdingpawl |33 is thus released, the punching and carriage feeding mechanism will be operated by the key K as heretofore, the parts being returned ready for a new operation when the carriage has been advanced one tooth, i. e. ready for the fecler ngers andpunches to cooperate with the next columns of the original and duplicate cards. Further, when the carriage is returned to initial position .i at the right, it will be evident that a pin 31, corresponding to that heretofore described and similarly operated, and operating on a swinging frame |31, will operate to hold up the sensing fingers H0 during the return movement of the carriage while releasing them for'further sensing operations at the end of that movement.

Here, of course, it Will also be evident that the operation of this modified mechanism willl be fundamentally similar to that heretofore described save for the mechanical sensing fingers and their. mechanical operation; each key K being locked and released under similar conditions to those heretofore described. Further, it will be understood that with this mechanism a space key mechanism such as that shown in Figure 8 is em'- ployed for the same purpose heretofore described.

In Figure 12 it will be noted that I have shown means for enabling the mechanism of Figures 1-8 to be used as a simple punching machine. Thus, whenever it is desired to punch only original cards on this machine, this can be done. To effect this result, I provide a square shanked plunger |40 having a head |4| acted upon by a spring |42 and normally projected thereby from a knob |43 through an aperture |44. Herein, this plunger has a key portion |45 movable into or out of the path of armature 61 for the holding pawl '10. Further, the knob |43 is knurled and provided with a pin |46 selectively engageable with any one of a series of holes |41 (herein four) in different angular positions of the knob. Thus, with this plunger pushed in and disposed between the armature 61 and the magnet 4|, it

would be made impossible for the holding pawl 10to return to holding position. Accordingly, when there is no original card beneath the brushes 32, all of these brushes 3.2 will engage the conducting plate 38. Consequently, all of the magnets 4I then being energized, all of the keys K will be released in such manner as to permit the machine to be used as a simple punch machine. Obviously, whenever it is desired to discontinue such use, it will only be necessary to rotate the plunger until the key portion |45 is out of the path of the armature 61, whereupon the mechanism will be freely usable as a verifying punch, all as heretofore described.' i Y' In Figure 13, I have shown a modified construction adapted to be applied to the modified construction shown in Figures '9 to 11 forac-V as an ordinary punch machine.

positions by grooves |49 and a spring pin |50.l

Thus, whenever the knob |48 is pulled out, the holding p-avvl 33 is disengaged from the rack I2, as shown in dotted lines in Figure 13. Accordingly, when there is no card under the sensing fingers H6, all of. these will drop down in such manner as to release all of the keys 54. With all of these keys released andthe carriage lock released by the knob |46, it will be evident that the machine will then be free to operate Conversely, of' course, whenever the knob is pushed in to bring the pawl |33 into normal position, the machine will again function as a verifying punch as heretofore described.A Also, it will be understood that, While in Figure 13 the rack is shown spaced between separate casings |5| and |52 for the sensing pins and `key operated mechanism, respectively, the above described mechanism may be used while still continuing to use the casing structure previously described, by simply spacingthe rack further from the vertical wall between the casings.

As a result of my' improved constructions, it will be evident that all need for separate veriv fying cr comparing, after the completion of the punching of the original and duplicate cards, is eliminated, the two cards being verified during the punching of the duplicate card. Further, it will be evident that with only ordinary punching machines and my improved' verifying punches, it is possible to obtain effective punching and verifying with a minimum of equipment, i. e. While eliminating the need for special verifying machines and while merely using my irnl With the use of my improved machine, it is also n not only possible tov punch the duplicate-cards and verify both cards at the same time, but also possible to punch the original cards on the same machinev when desired. It will also be observed that any card acted upon by the sensing mechanism can be veried either with or-Without another card being simultaneously operated upon by the punches, the locking of any of the'keys indicating a discrepancy between the -perforation of the card being verified and the data on which it is beingk checked. Further, it will be evident that insofar as the verifying mechanism is concerned, the keys not agreeing with the punching of the card being verified, will lbe locked, irrespective of Whether or not a card is being punched at the same time. Thus, under y punches,l which may be the correct card..l Attention is also directed to the fact that my machine may be provided for use with either brushes or feeling fingers, and to the further fact that the same may also be provided with my improved attachment means for enabling either of the above forms to be adapted for use as either a verifying punch or a simple punch at will, upon merely pushing in or pulling out the attachment plunger. These and other advantages of my improved construction will, however, be clearly apparent to those skilled in the art.

While I have herein illustrated several forms which my invention may assume in practice, it will be understood that these forms are chosen for purposes of` illustration and that the invention may be modified and embodied in other forms without departing from its spirit or the scope of the appended claims.

What I claim as new and desire to secure by Letters Patent is:

1. A verifying machine having card receiving means, and verifying mechanism having manually operable verifying keys and mechanism controlled by a card in said receiving means independently of the operation of said keys and controlling the possible manual operation of said keys.

2. A verifying machine having card receiving means, and verifying mechanism having normally locked manually operable verifying keys and key controlling mechanism controlled by a card in said receiving means and maintaining said keys locked upon disagreement between said card and a proposed manual operation of said keys.

3. A verifying machine having card receiving means, and verifying mechanism having sensing mechanism acting on the card being verified independently of the operation of said keys and manually operable verifying keys and key controlling mechanism controlled by said sensing mechanism and having means for locking said keys against manual operation not agreeing with said card. y 4. A verifying machine having card receiving means, and verifying mechanism having manually operable verifying keys and mechanism controlled by a card in said receiving means having contact means acting on saidcard and means controlled by said contact means and controlling the possible manual operation of said keys.

5. A verifying machine having card receiving means, verifying mechanism having manuallyA operable verifying keys and mechanism controlled by a card. in said receiving means and having means for locking said keys against a proposed manual operation not agreeing with said card, and means for advancing said card while the keys are locked.

6. In a verifying machine, a plurality of card receiving means, andverifying mechanism cooperating with the cards in said means and having sensing mechanism acting on one card and manually operable verifying means cooperating with the other card and having keys and key-controlling mechanism controlled by said sensing mechanism.

'7. A verifying punch machine having original and duplicate card receiving means, punching mechanism for the duplicate card, and mechanism controlled by the original card and controlling said punching mechanism during manual operation thereof.

trolled manual operation of said punching mechanism.

9. A verifying punch machine having original and duplicate card receiving means, punching mechanism for the duplicate card, and mechanism controlled by the original card 'and having means for inhibiting punching of the duplicate card whenever the original and proposed punchings disagree. l

l0. A verifying punch machine having original and duplicate card receiving means, punching mechanism for the duplicate card, and controlling mechanism including sensing means acting on the original card and means controlled by said sensing means and permitting manual operation of said punching mechanism only when the original and proposed punchings agree.

11. A verifying punch machine having original and duplicate card receiving means, punching mechanism for the duplicate card including normally locked keys, and sensing mechanism acting on the original card and unlocking said keys.

l2. A verifying punch machine having original and duplicate card receiving means, punching mechanism for the duplicate card, and means requiring agreement in the punchings of said original and duplicate cards successively column by column as the duplicate card is punched.

13. A verifying-punch machine having original and duplicate card receiving means, punching mechanism for the duplicate card, mechanism controlled by the original card and normally locking said punching mechanism having means for releasing the latter when the original and proposed punchings agree, and means for feeding original and duplicate cards when said punching mechanism is released or when the same is locked.

14. In a verifying punch machine having original and duplicate card receiving means, punching mechanism for the duplicate card having controlling means acting on the original card, and means for indicating agreement of said cards when the original and proposed punchings agree and for indicating disagreement when said punchings disagree.

15. In a verifying punch machine having original and duplicate card receiving means, punching mechanism for the duplicate card having controlling means acting on the original card, and feeding mechanism for feeding said cards when the original and propose'd punchings agree having means for interrupting feeding -when there is a duplicate punching in the original card.

16. In a verifying punch machine having original and duplicate card receiving means, punching mechanism for the duplicate card having controlling means acting on the original card, and feeding mechanism for feeding said cards having means for interrupting punching and 'feeding when' the proposed punching of the duplicate card disagrees with the punching in the original card.

' 17. In a verifying punch machine having original and duplicate card receiving means, duplicate card punching mechanism having controlling mechanism acting on the original card and- .ff andserisingjmechanism operative on an koriginal card and-'having vmeans..fora-lockingsaid:punch--" ing mechanism; (saveqwhemthe. proposed punch-` a ings finithe duplicate'V card' agree vvwithl those -in nism including electric contact means acting on"4 a card in onel of said means, and cooperating aoaonea a also umeans for feeding saidf" cards vvhen the punchings ltherein' agree randv 'for preventing! punching and feeding whenever theoriginal and ,proposedfpunchings disagree, and means for enabling removal "Ufthe required card` for `correction. f 4.' .i f

'18.'Inr a verifyingpunching rnak'shine;punching mechanism' .operative on a duplicate; card,

theoriginalfcard.

19. 1in=an;.verifyingA puiichingmachine, pench-f ing mechanism` operative on' a,- duplicate card,y

sensingmechanism operative' on an original card and having mean'sv forlocking' said 'punching mechanism savefwhen the proposed punchings lin lthe duplicate card agreewith those in the original 'card, and means for effecting feeding when said punching mechanism islocked.

20'. Ina verifyingfpunching machine, punch" ing mechanism operative on a duplicate card,' sensing mechanism operative on an'orlginal card,-

locking means controlled by said sensing mechanism controlling said punching mechanism and locking said punching mechanism `save when `the punchings in the duplicate'card agree with those` in the original card, and meansfor` lrendering Y said sensing lmechanism'inoperative' to control said punching-mechanism.

21.A A punching macl'iine having. original and* duplicate card 'receiving means,y punching'jmechanism ,for the duplicate card, means controlled by the original card for 'inhibitingpunchlng Whenever the original andproposed punchings .disagree and .permitting punching when said punchings agree, and means for 'at will disabling said, last mentioned means to release the punch ing mechanism for uncontrolled" manualoperation. f

22'. yIn combination,

in the othermeans including '"a fplurality of manually `foperated punches* and controlling" means thereforpermitting only the operation of punchesy corresponding to the punching of the card acted onv by said sensing mechanism.

23.` In combination, cardreceiving means for.-

receiving a plurality of cards," sensingy mechapunch mechanism acting` on a card in the other means including a plurality of "manually operated l punches and `electric controlling ymeans there'for'controlled` by said contact means per- -fmitting only the operation .of punches corresponding to the punching'i'of ther-card acted on by saidV sensing mechanism. fr

24. A punching machinelhaving original 'and' duplicate card receiving r`means,` punching 4mechanism for the duplicate card,nie`ans controlled by thel original c a'rd and includlnga universal bar for inhibiting punching whenever theoriginal andV vproposed punchings disagree and per-Iv mitting:y punching. when-[said puncl'iings agreed` and means acting von'said universal bar for at will disabling said last 'mentioned means tore-j lease the punchingmechanism'for uncontrolled manual operation;f#` l 25,l An punching machine, having original and w.duplicate card receiving means, punching and feeding mechanism for the duplicate card, means card receivingv means fory receiving a vpl'urality'of cards, sensing mechanism acting ona1cardfin one `of said means, and

cooperating=punch mechanism' acting oni a 'card .ing means.

controlled by the original card and including a holding pawl forl inhibiting punching and feedingwhenever the original and proposed punchings'disagree and permitting punching when said punchings agree, and means acting Onsaid holding pawl for at will disabling said lastv mentioned meansgto release thepunching mechanism for uncontrolled manual` operation. f. y

2,6. In a: verifying punch machine, "punching,

mechanism including keys and locking mechanism' thereforff'and,sensing .mechanismhaving means-"forlreleasing,said keys.l 'f

27.- In,y averifying punchy machine, punching i mechanism including keys and locking mecha-.- nism therefor, ,sensing mechanism having means forfreleasing` said |keys, and ineans controlled by the operation of said keys when released for effecting relooking of the same. 1

2'8. In a verifying punch machine, feeding mechanism including keys and locking mechanism forthe latter, andsensing mechanism having means `for releasing said keys.

29'.`In a verifying punch machine, feedingl trolled by the operation of said keys when released for effecting relooking of the same.

32. In a verifying punch machine, punching mechanism `including keysand locking mechanism therefor, sensing mechanism having means for` releasing saidkeys, and means for disabling said sensing' mechanism and permitting unre-l stricted operation of said punching mechanism.

33. In averifying punchmachine, feed operating mechanism including keys and locking mechanism therefonj sensing mechanism for releasing said keys, and card carrying means operative by said feed operating mechanism and movable relative to said sensing mechanism.

34. vIn a verifying punch machine, feed operati ing mechanism includingkeys and locking mechanism therefor, sensing mechanism for releasing said keys, card carrying means operative by said feed operating mechanism and movable reversely relative to said sensing mechanism, and means for rendering said sensing mechanism inoperative upon reverse movement of said card carry- 35.' In a- .verifying vpunch-'niachii'ia duplicate card punching mechanism including keys," original, card sensing mechanism controlling said keys, and ymeans for feeding-both duplicate and original cards column by column relative to said mechanisms4 when the proposed and existing punchings of said cards agree.

36.` In a verifying punch'machine, vduplicate card punching mechanism including keys, original card' sensing mechanism 'controlling said keys, means for feeding both duplicate and orig'- inal cards column by columnl relative lto-said mechanisms-when the proposed]l and existing'` punchings of said'cards agree, and means for effecting like feeding of -said cards when there is no punching in either corresponding column thereof.

37. A verifyingpunch machine'having original-y and duplicate card receiving means, punching mechanism for the duplicate card comprisinga plurality of punehesmanually operative to punch said card, and mechanism controlled by the-original card and having means forfinhibiting ther manual operation of any other punch than that manual operation of a punch corresponding to a punching in the original card when a duplicate punching appears in the same column in the latter.

39. A verifying punch machine having original and duplicate card receiving means, punching mechanism for the duplicate card comprising a plurality of punches manually operative to punch said card, and mechanism controlled by the original card and inhibiting manual operation of punches not agreeingfwith the punching of said original card and comprising punch locking mechanism and sensing mechanism controlling the latter.

' 40. A verifying punch machine having original and duplicate card receiving means, duplicate card punching mechanism, and sensing mechanism acting on the original card and controlling said punching mechanism, said sensing mechanism including electric brushes and said punching mechanism having controlling mechanism therefor in circuit with said brushes.

41. A verifying punch machine having original and duplicate 'card receiving means, duplicate card punching mechanism, and sensing mechanism acting on the original card and controlling said punching mechanism, said sensing mechanism comprising fingers projectible through punchings in the original card and said punching mechanism including controlling mechanism for the latter controlled by said fingers.

42. A verifying punch machine having original and duplicate card receiving means, duplicate card punching mechanism, and sensing mechanism acting on the original card and controlling said punching mechanism, said sensing mechanism comprising fingers projectible through punchings in the original card, and locking mechanism for said punching mechanism controlled by said fingers and locked when the original and proposed punchings disagree and released when said punchings agree.

43. In a verifying punch machine, a feed bed having original and duplicate card feeding mechanism, and sensing and punching mechanisms operative respectively on original and duplicate cards therein and having means for enabling punching and effecting feeding of said mechanism when the proposed punching in the duplicate card corresponds to the existing punching in the original card.

44. In a verifying punch machine, a feed bed having original and duplicate card feeding mechanism, and sensing and punching mechanisms operative on original and duplicate cards therein and having means for punching a duplicate card and effecting feeding of said mechanism only when the original and proposed punchings agree,

'said sensing and punching mechanisms being respectively disposed over the original and duplicate cards and. having said feeding mechanism moving beneath the same.

45. In a verifying punch' machine, a carriage having means for carrying duplicate and original cards, cooperating punching and sensing means `acting upon duplicate and original cards on said carriage, controlling means controlledv by said sensing means for permitting punching land effecting feeding of the carriage in one directionr only, when the original and proposed punchings agree, means for effecting a reverse movement of ,said carriage, and means for rendering said punching, sensing and controlling means inoperative during said reverse movement.

46. In a verifying punch machine, a carriage, cooperating punching and sensing means acting upon original and duplicate cards on said carriage and effecting feeding of the latter in one direction, means for effecting a reverse movement of said carriage, and mechanism for rendering said sensing mechanism inoperative during said reverse movement and restoring the same to operative position upon completion of said reverse movement including reciprocating means operative as said carriage moves reversely, swinging means automatically swung thereby, and elevating means for said sensing means operative by saidI swinging means.

47. In a verifying punch, a key operated lever;

a card carriage, means operated by said lever for punching a card in said carriage and feeding the latter, and means for locking said lever upon release thereof.

48. In a verifying punch, a key operated lever, a cardcarriage, means operated by said lever for punching acardin said carriage and feeding a card carriage, means operated by said lever for punching a card in said carriage and feeding the latter, and locking means for said lever releasable to permit movement thereof and relock it upon lever movement, said. locking means including a magnet controlling said lever and a magnet controlling switch controlled by said lever. y

50. In a verifying-punch, a` key operated lever, a card carriage, and means operated by said lever for punching a card in said carriage and feeding the latter, said feeding mechanism including escapement mechanism operative as said lever moves to effect punch operation.

51. In a verifying punch, a key operated lever, a card carriage, and means operated by said lever for punching a card in said carriage and feeding the latter, said feeding mechanism including escapement mechanism operative to center the card beneath said punch prior to punching andto feed said card following punching.

52. In a verifying punch, a key operated lever, a card carriage, and means operated by said lever for punching a card in said carriage and feeding the latter, said feeding mechanism including an escapement operative to eifect feeding movements before and after the operation of said punch.

53. In a verifying punch, a key operated lever. a card carriage, means operated by said lever for punching a card in said carriage and feeding the latter, locking mechanism for said lever, and

` l54. In a verifying punch, punching mechanism including a key operated lever, latching means controlling the operation of said lever, and electro-responsive means controlling said latching a magnet releasing said latching mechanism, and

a switch operative upon operation of said lever and deenergizing' said magnet.

58. In a punch, a key operated lever, feeding mechanism including an escapement pawl and operated by said lever, and punching mechanism including a punch likewise operated thereby and disposed between said escapement pawl and the `lever pivot.

59. In a punch.- a key operated lever, feeding mechanism including anA escapement pawl operated thereby, punching mechanism including a punch likewise operated thereby, and normally operative locking mechanism Acontrolling said lever and associated with the free end thereof.

60. In a'verifying punch, a key operated lever, a card carriage, means operated by said lever for punching a card in said carriage and feeding the latter, latching mechanism for said lever, and sensing mechanism controlling the operation of said latching mechanism.

61. In a verifying punch, a key operated lever, a. card carriage, means operated by said lever for punching a card in said carriage and feeding the latter, latching mechanism for said lever including a Bowden wire, and sensing mechanism controlling the operation of said latching mechanism including a feeler movable with said wire.

62. In a verifying punch, a key operated lever,

a card carriage, means operated by said levery for punching a card in said vcarriage and feeding the latter, latching mechanism for said lever including a Bowden wire, sensing mechanism controlling the operation of said latching mechanism including a feeler movable with said wire, and electro-responsive means controlling said feeler. Y

63. In a verifying punch, a key operated lever,l

a card carriage, means operated by said lever for punching acard in said carriage and feeding the latter, latching mechanism for said lever including a. Bowden Wire, sensing mechanism controlling the operation of said latching mechanism in cluding a feeler movable with said wire, electroresponsive means controlling said feeler, and switching mechanism operative with said lever and controlling said electro-responsive means.

1., 64. In a punching mechanism, a key, a card carriage having means for carrying original and duplicate cards, cooperating punching and sensing mechanisms including a punch operative. on the duplicate card by said key and sensing means operative' on the original card controlling the operation of said punch and releasing the same for manual operation when the original and proposed punchlngs agree, and means operative by. said key to eect a feeding movement of said carriage.

65. In a-punching mechanism, a key .operated .,1ever, a card carriage, means operative by said lever to eilect a feeding movement of said carriage, said key operated lever including a de' pressible key and a lever extending transversely of said key and movable therewith, means normally maintaining said key and lever in elevated position, and cooperating controlling mechanism for said carriage and key including locking means v controlling said lever-and a switch controlled by said key.

WAL'I'ER, K. YOUNGBERG.

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