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Publication numberUS2153193 A
Publication typeGrant
Publication dateApr 4, 1939
Filing dateDec 12, 1935
Priority dateJul 19, 1933
Publication numberUS 2153193 A, US 2153193A, US-A-2153193, US2153193 A, US2153193A
InventorsWilliam Lang
Original AssigneeIbm
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Record card feeding mechanism
US 2153193 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

April 4, 1939.

W. L-ANG RECORD CARD FEEDING MECHANISM Original Filed July 19, 1953 3 Sheets-Sheet 1 \NVENT R ATTORNEY E.- E. EEEEEEEE E g m w. 2% mm BT a 9 & .MW Nb 0% 3 Sheets-Sheet 2 w. LANG RECORD CARD FEEDING MECHANISM 105 lu m...

' Original Filed July 19, 1935 April 4, 1939.

I5 F|G.4.

INVEN OR ATTORNEY April 4, 1939. w. LANG RECORD CARD FEEDING MECHANISM Original Filed July 19, 1933 5 Sheets-Sheet 3 INVENTOR ATTO R N EY Patented Apr. 4, 1939 UNITED STATES RECORD CARD FEEDING MECHANISM William Lang, New York, N. Y., assignor to International Business Machin es Corporation, 7

New York, N. Y a corporation of New York Original application July 19, 1933, Serial No.

Divided and this application December 12, 1935, Serial No. 54,025


This-invention relates to verifying machines and more particularly refers to machines for verifying perforated record cards and is a division of my copending application Serial No.

6 681,071, filed July 19, 1933 now Patent No. 2,-

The object of the present invention is to provide improved mechanism for controlling the advance of the record carriage of such machines.

10 In tabulating machine work, data are tabulated by feedingthrough the tabulating machine, recrd cards having differentially spaced holes punched therein. Such record cards may be punched in any suitable punching machine preferably of the type disclosed in the patent to Schaaif No. 1,134,018 :in which machine the punching operation is efiected by depressing keys provided for that purpose. When using such punching machines operators sometimes depress 20 the wrong key which results in incorrect data being punched in the card. It is, therefore, necessary to check the punched cards in order to determine if any errors have been made in the punching operation. Such checking frequently 25 is accomplished by visual inspection of the cards, however, this method of checking the cards has been found to be unsatisfactory sincethechecker is liable to make the same error originally made by the operator who punched the card.

Various other objects and advantages of my invention will be obvious from the following particular description of one form of mechanism embodying the invention or from an inspection of the accompanying drawings and the invention also constitutescertain new and novel features of the construction and combination of parts hereinafter set forth and claimed.

Fig. 1 is a sectional view taken through the card feeding and analyzing part of the machine. Fig. 2 is a detail view of the spring drum for the carriage showing also the escapement mechanism.

Fig. 3 is a detail view showing the bar 49 and the slide 60 shifted by energization of one of the verifying magnets.

Fig. 4 is a fragmentary view showing the skip lifter bar and the escapement pawls.

Fig. 5 is a sectional view taken on line 5-5 50 (Fig. 1).

Fig. 6 is a detail view showing the skip bar in relation to a typical card of the Hollerith Fig. 7 is a sectional view taken on line 'I-'| 55 (Fig. 1)

Fig. 8 is a conventional circuit diagram of the electrical elements of the machine.

Fig. 9 is a detail view of the space key.

The verifying machine is provided with manipulative keys similar to those in the punching 5 machine disclosed in the patent to Schaafi No. 1,134,018. The checker operates the keys just as if a new card were being punched, and, if a card is correctly punched, the card carriage feeds forwardly one step upon depressing each key. 10 If, however, a hole is punched in the wrong digital position in a column the carriage does not feed forwardly thus warning the operator that an erroneous punching exists at that column.

The invention includes a set of independent sensing brushes adapted to make contact with a common contact bar through the perforations in the card, thus establishing electric circuits through a series of magnets, one for each of the twelve index point positions on the card. These magnets, when energized, operate individual mechanisms which makes it necessary to depress the corresponding key before the card carriage can escape to the next succeeding columnar position. If the hole sensed is in the wrong posi- 26 tion, or, if the wrong key is depressed, the escapement mechanism will not function, and the carriage will remain in the position at which the error was found.

Also when a card having combinational holes 80 punched therein, that is, two or more holes punched in a column, is being verified it is neces- 'sary to concurrently deprex the several keys corresponding to the several index point positions of the combination being checked.

Card carriage Referring to Fig. 1 of the accompanying drawings thecards 9 are fed from a stack 60 between a pusher II and a forward guide I2 to bring the first column of the card in alinement with a series of sensing brushes l3. These brushes are adapted to make contact through the perforated holes in the card with a common bar I (see also.

Fig. 8). The brushes iii are securely mounted in a. dielectric bar I 5 suitably supported in the machine.

'urged toward the left (Fig. '1) and a suitable escapement mechanism including pawis l9 and 29 (Fig. 2) cooperates with the serrated upper edge of the rack l5 to permit step by step movement thereof.

As viewed in Fig. 2, the pawls I9 and 29 are in their normal positions wherein the pawl I9 is in engagement with the rack l5, holding the card carriage in anaylzing position against the action of the spring drive which includes a spring (not shown) enclosed in a spring drum l6 (Fig. 2) attached to the side of a gear |1 mounted on a shaft |8. The gear l1 meshes withteeth on the lower edge of the rack l5. This spring drive constantly urges the carriage 'towardthe left (as viewed in Figs. 1 and 2).

A lever 2| secured on the end of a shaft 22 carries in one arm a pin 23 projecting into an enlarged opening in the pawl l9. A pin 24 in the other arm of the lever 2| is embraced by an open slot in the pawl 29. As the shaft 22 and lever 2| rock counterclockwise (Fig.2) the pin 24 lowers the pawl 29 into engagement with the rack I5 and, at the same time, the pin 23 raises the pawl |9 out of engagement with the rack. The pawl I9 is provided with a slightly elongated slot 25 surrounding the shaft 22 so that, as the pin 23 raises said pawl out of engagement with the rack, a spring 26 advances the pawl slightly. Upon clockwise movement (Fig. 2) of the arm 2|, the pawl I9 is lowered into engagement with the next succeeding notch in the rack l5 thus efiecting a single step of movement of the card carriage to bring the next succeeding column into registry with the sensing brushes l3.

The escapement mechanism, just described, is rocked by an escapement magnet 21 (Figs. 1 and 8). The armature 28 of this magnet is connected by a link 29 to one arm of a bell crank 39, and a link 3| connects the other arm of the bell crank to an arm 32 on the shaft 22.

When the magnet 21 is energized it attracts its armature 28 rocking the bell crank 39, the arm 32 and shaft 22 counterclockwise (Fig. 1) to effect an escapement of a single step, as set forth above, to permit a single step of movement of the card carriage. The escapement magnet 21 is energized by the closing of a pair of contacts 33 under the joint control of the analyzing brushes |3and any of the twelve keys 34. Re-

ferring to Fig. 8 it may be noted that a magnet 35 is wired in series with each of the twelve brushes l3. When a column having one or more perforate index points therein comes into alinement with the brushes I3, the brush for the per! forate index points make contact through the perforations with the bar |4 thus establishing a circuit from one side 36 of a supply line to the common bar I4, through the hole in the card, brush l3, magnet 35, wire 39 and contacts 49 to the other side 4| of the supply line.

This energizesthe magnet 35 whose brush I3 has made contact with the bar |4 through a punched hole in the card. The energized magnet 35 attracts its armature 42 (Fig. 1) which armature is carried by an arm 43 pivoted at 44 and having its opposite end rounded and embraced by a horizontal slot in a plunger 45 which is not unlike the stems 46 for the keys 34. Thus when the magnet 35 is energized, attracting its armature 42, it rocks the arm 43 counterclockwise thrusting downwardly the particular plunger 45 associated therewith. Near its lower end the plunger 45 has a slot embracing one arm of a bell crank 41, the other arm of which carries a arcane pin 48 projecting into a slot formed in the lower edge of a horizontally disposed bar 49.

When the plunger 45 is thrust downwardly it rocks the bell crank 41 counterclockwise thrusting the bar 49 toward the left, as viewed in Fig. 1 to the position in which it appears in Fig. 3. The left hand end of the bar 49 (Fig. 1) slides on a cross frame 59 and the bar 49 at this end has a projection 5| normally resting beneath a broad lug 52 on a lever 53 'pivotally supported at 54 on a bail 55 whose arms 56 are pivoted on a rod ,51. The-fight hand end of the lever 53 is rounded and is embraced by a slot in the key stem 46 for the associated key 34. A spring 58 urges the bail 55 clockwise (Fig. 1) against a stop stud 59.

A slide 69, mounted on headed studs projecting from the bar 49, is adapted to slide longitudinally on the bar but is normally held in its left hand position (Fig. l) by a spring 63 having an end secured to the slide 69 and the other end fast on bar 49.

As the bar 49 is shifted toward the left,

-through the agency of the magnet 35, a projec-v tion 61 on the slide 69 is brought beneath a rib 68 on a universal bar 69 pivoted on a shaft 19. The bar 69 also has a rib 13 extending beneath all of the lugs 52. At the same time the leftward movement of the bar 49 brings the projection 61 beneath the rib 68 it also carries the projection 5| from beneath the lug 52. The parts are shown in the above described position in Fig. 3.

The operator reading the data from the record from which it was originally punched on the card being analyzed, now depresses the key or keys 34 corresponding to the data to be verified. As the key is depressed a pin 1| projecting from the key stem 46 cooperates with a beveled projection 12 on the slide 69 and cams this slide toward the right removing the projection 61 from beneath the rib 88.

Continued depression of the key brings the lug 52 into contact with the angular end 13 of the universal bar 69 and rocks this bar, together with the shaft 19 and an arm 14 secured to said shaft, counterclockwise against the tension of a spring 15. This movement of the arm 14 raises a link 16, pivotally connected thereto and having a hook 16a at its lower end cooperating with the lower blade 18 for the contacts 33, thus closing these contacts to energize the escapement magnet 21. This magnet, as set forth above, acts to rock the shaft 22 (Fig. 2) thus operating the pawls l9 and 29 to permit the card carriage to travel one step toward the left (Fig. 1) to bring the next succeeding column into registry with the sensing brushes l3.

As the energized escapement magnet 21 attracts its armature 28 drawing the link 29 (Fig. 1) toward the right, a projection 11 extending upwardly from the left hand end of the link 29, rocks the link 16 counterclockwise about its pivot on the arm 14, disengaging the hook at the lower end of the link 16 from the switch blade 18 carrying the lower contact 33. The inherent spring tension of these blades opens the contacts 33 and deenergizes the escapement magnet 21. The blade 18 now rests to the left of the link 16 below the hook so that it is necessary to release the depressed key 34 allowing the lever 53 to return to initial position permitting the spring 15 to rock the universal bar clockwise to normal. This lowers the link 16 and the hook again assumes its position below and in cooperative relation depression of one or more of the keys 34.

the projection 5| from beneath the lug 52.

From the above description it can be seen that, if a hole is present in any one of the twelve positions, for instance, the five position on the card and the five key 34' is depressed, the escapement magnet 21 is energized and the carriage spaced one step.- However, two general conditions may obtain wherein the escapement magnet would not be energized. These conditions are: 1) A hole is sensed in the correct position and the wrong key is depressed, and (2) a hole is erroneously placed and the correct key is depressed. Under these conditions the machine functions as follows:

Assuming that the hole is properly placed in the five position but the wrong key is depressed, as soon as the brush l 3 senses the hole the circuit is completed through the corresponding magnet. This magnet, being'energized, shifts the bar 49 associated therewith toward the left, removing At the same time the slide 60 is carried leftward with the bar 49 to bring the projection 61 under the rib 68. The operator now depresses the six" key instead of the ffive key. In this case the slide 60 on the bar associated with the five digital order will not be drawn to the right consequently the projection 61 remains under the rib 68 of the universal bar 69 thus preventing counterclockwise movement of this bar to close the contacts 33, and the escapement magnet remains unenergized.

When the operator depresses the six key under this condition the lug 52 comes into contact with the projection 5| on the bar 49 associated with this key, and, continued depression of the key rocks the lever 53 clockwise about the point of contact of the lug 52 and the projection 5| as a pivot. This raises the left hand end of the lever 53 and rocks the ball 55 counterclockwise about its shaft 51. As the bail 55 swings upwardly it is latched in its raised position by a springpressed hook 13 (Fig. 1).

When the bail 55 is latched in its raised position and the depressed six key 34 is released by the operator a spring 80 rocks the lever 53 counterclockwise about its pivot 54 raising the key to its normal position. The left hand ends of all of the levers (there is a key 34 and a lever 53 for each index point position on the card) are supported on the bail 55, consequently when the bail 55 is raised, as just described, it raises all of the lugs 52 far enough so that if another key 34 is depressed before the latch 19 is operated to release the bail 55, the link 53 will not be rocked far enough to come into contact with either the,

projection 5| on the bar 49 or the projection 13 on the universal'bar 69. This does not effect an escapement of the carriage but does act as a warning to the operator that an error exists on the card then in the machine or that the operator has depressed the wrong key. The operator may re-check the particular column by first rocking a lever 8| secured to the shaft 82 upon which is fast the latch '19, to free the bail 55 to its spring 58, which spring immediately restores the bailto its normal position. Reading the data again from the original record the operator depresses the proper key 34.

If the key new depressed corresponds to the data punched in the column being analyzed the slide 68 is drawn toward the right and the universal bar 69 operated to energize the escapement magnet, as set forth above, and the operator may proceed with the verification of the next column. However, if the bail 55 is again raised and latched, the operator is assured that the error exists on the card. The operator then removes the card from the machine in the following described manner:

By depressing a release key 83 (Figs. 1 and 8) contacts 84 are closed energizing a magnet 85 (Figs. 2 and 8). The armature 86 of this magnet is secured to ashaft 81 to which is also secured an arm 88 carrying a stud projecting beneath the escapement pawl l9. Energization of the magnet 85 attracts its armature 86 rocking the shaft 81 and arm 88 clockwise'to disengage the pawl l9 from the rack l5 whereupon the spring drive shifts the carriage in one movement to its extreme left hand position where the card may be removed and another placed in the carriage.

All disagreements between the holes punched in a particular column and'the keys depressed affect the machine in substantially the same manner, for instance, should the hole punched in the card be in the wrong position and the operator depress the correct key the several parts will function exactly as described to render th escapement ineffective.

If an additional hole is punched in a column which should have a single hole therein, the magnet 35 corresponding to the extra hole will cause the slide 60 to be carried toward the left positioning the projection 61 under the rib 68, thus preventing energization of the escapement magnet. Likewise, if a column should have two holes punchedthere and one of said holes is missing, the magnet 35 corresponding to the missing hole will not be energized and will not shift the projection 5| from beneath the lug 52, consequently depression of the corresponding key will present energization of the escapement magnet 21. In this connection it may be mentioned that, when combinational holes are verified, the related keys are concurrently depressed as is the usual practice.

In this manner the depression of any key or keys which do not correspond to the hole or holes Column and field skipping Should there be one or more columns on the card in which there is no perforate point and in which column none is intended, the escapement is effected by operation of a space key 90 (Fig. 9). This key is just like the keys 34 and upon depression, operates a lever 53 to rock the universal bar 69, shaft 18 and arms 14 counterclockwise to close contacts 33 which energizes the magnet 21 to effect an escapement of the carriage one step to the next column.

Tabulating cards of the well known Hollerith type are usually divided into a plurality of fields, each field comprising a plurality of columns. The number of columns includedin a field depends on the requirement for that particular field. It sometimes happens that a certain field or fields remain entirely unpunched, in which case, in order to maintain and to increase the speed at which these machines are operated, a device is provided to skip either parts of or entire fields either automatically or under the control of the X key 34. This is the key 34 which corresponds to the 11 or X index point position of the card. This key cooperates with the 11 brush I3 and magnet 35 in the same manner as each of the other keys 34. That is, if the 11 key 34 is depressed and there is no corresponding hole in the 11 index point position, bar 55 will be raised and latched in its elevated position thus permitting lever M to rock and give a visual indication that there is a condition of nonverification.

Skipping a field under the control of the key 34 is useful when it is desired to verify, through the medium of a, hole punched in the 11 or X position in the first column of the field to be skipped, that the field is blank.

The automatic features of skipping a field or fields may be used to skip a blank field without verifying or to skip a field previously gang punched and which it is not necessary to verify.

The operation of the skip mechanism under the control of the X key 34 will be described first. In order to operate the skip mechanism under control of this key a switch 92 (Fig. 8) is set at thecontact marked 2. Depression of the X key 34 in addition to its normal func tion closes contacts 93 located directly beneath the stem 46 of this key (Fig. 1) setting up a circuit from line 36, bar III, wire 90, contacts 93, wire 95, switch. 92, a relay magnet 90 to line H. Another circuit is completed at the same time from the switch 92 by a wire 9l through the escapement magnet 21. This energizes magnet 21 and effects an escapement of the carriage in the usual manner by rocking the pawl I9 counterclockwise (Fig. 2) which movement closes contacts 90. Upon energization of the magnet 90 contacts 99 are closed so that when the contacts 98 close, a holding circuit is set up from line 36, wire I00, a magnet IIOI, contacts 90, wire I02, contacts 99, magnet 90 to the line III.

Energization of the magnet I attracts its armature I03 rocking an arm I09 clockwise (Fig. 5) to slide a skip lifter bar I05 toward the left as viewed in Figs. 4-. and 5. At its right hand end (Figs. i and 5) the bar I05 is guided by a stud III and the reduced left hand end of said bar rests on the upper edge of a. skip bar II2 removably mounted on the carriage slide I5. Upon the leftward movement of the bar I05 a beveled shoulder H3 coacts with the skip bar II2 to raise the end of the bar I05. At this time the bar I05 is resting in one of a plurality of recesses H0 in the upper edge of the bar H2.

It will be noted by reference to Fig. 6 that the recesses H4 are in position corresponding to the first column in each card field. The bar I05 is thrust leftward first after the pawl I9 is raised and the escapement occurs when the shaft 22 is rocked clockwise (Fig, 6) to raise the pawl 20 out of engagement with the rack I5. As the carriage shifts toward the left the recess IIl passes from beneath the bar I05 camming this bar, which is now in its left hand position (Fig. 5), upwardly to retain the pawl I9 in its raised position. Thus both the pawls I9 and 20 are held out of engagement with the rack I5 and the carriage is free to travel towards the left until such time as the next recess IIII comes under the bar I05 when said bar drops into the recess permitting the pawl I9 to reengage the rack I5 stopping the carriage in a position cor responding with the first column of the next field.

The clockwise movement of the pawl I9 to reengage the rack I5 opens'the contacts 98 which deenergizes the magnet IOI whereupon the bar I05 is retracted by its spring I06. The sameprocedure is followed if it is desired to verify the X punch in the next, or any other field. From punched the foregoing itis therefore apparent that, with switch 92 in its 2 position, if the X key M is depressed and an X hole is present in the column under the sensing brushes, the carriage will skip to the first column of the next adjacent card field. On the other hand, if the X hole is not present, skipping will'fneverthelessfltake place as before, but in addition, bar 55 is latched.

preventing any further effective operation of keys 34. It may herebe pointed out that in practice an X hole is punched in the first column of a field which is to receive no data punching as an indication that such field is purposely to remain unpunched. In other. cases, the: X holemay be omittedlas where the data is to be in'the field during some later operation in the'accounting procedure. Thus if after the "X key 34 is operated and the carriage skips, lever 8| has rocked to indicate the absence of the X hole, the operator will consider this as an indication of an error or, if he knows that no X hole is intended, he will restore lever BI and proceed with further operations.

When it is desired to skip a field previously gang punched or in which there are no punchings, an automatic device, now to be described, is brought into use. This device includes a dielectrio bar II5 (Figs. 1, 7 and 8) mounted on theframe of the machine. Secured on the bar II5 are a common conductor II 5, a series of contacts II? (one for each card column), and a plug bar H8. The bar H6 is connected by a wire H9 and the bar I0 (Fig. 8) to the line 35. The bar I I9 is connected by a wire I20 to the contact 3 of the switch 92.

Bridging brushes I2I suitably mounted on the carriage are adapted to close a circuit from the common bar II6 successively with the contacts II! as the carriage escapes from column to column. A plug I22 may be used to connect any .one of the contacts Hi to the bar IEO.

If it is desired to skip an entire field, the plug I22 may be placed in position to connect the contact I I7, corresponding to the first columnar position in the field to the bar IIB. However, if it is not desired to skip the entire field, the plug I22 is inserted in the particular columnar position at which it is desired to start the skipping action.

With the plug I22 in the proper position and the switch 92 on the contact 3, the operation bf the skip mechanism is as follows:

The operator proceeds with the column by column verification under the control of the verifying keys 34 in the manner previously described. When the last column preceding the field to be skipped is verified the carriage escapes to the first column in the field to be skipped. At this time the brushes I2I complete a circuit from the line 36 to bar I0, wire H9, bar H6, brushes IZI, contact 1, plug I22, bar II8, wire I20, switch 92, magnet 96 to line H. Also from switch 92 a circuit is completed through magnet H to line III Energization of the magnet 21 effects an escapement in the usual manner operating the escapement pawl I9 which closes the contacts 99 completing a circuit. from the line 36, wire I00, magnet IOI, contacts 98, wire I02, contacts 99 closed upon energization of magnet 96, magnet 99 to line 4|.

This forms a holding circuit through the magnet 96 and energizes magnet IOI which shifts the skip lifter bar I05 toward the left 'to maintain the pawl I Sin raised position until the next recess H4 arrives thereunder. This permits the bar I05 to drop lowering the pawl l9 into engagement with the rack l5 thus stopping the carriage with the firstv column of the next succeeding field above the brushes l3. The operator may then proceed to verify this field, or the ,field may be skipped.

' While there has been shown and described and pointed out the fundamental novel features of the invention ;as applied to a single modification, it will be understood that various omissions and substitutions and changes in the form and details of the device illustrated and in its operation may be made by those skilled in the art without departing from the spirit of the invention. It is the intention therefore to be limited only as indicated by the scope of the following claim. r

What is claimed is as follows:

In a machine of the class described, the combination of a carriage for perforated cards, a contact device carried by said carriage, a plurality of stationary contact segments arranged to be successively engaged by said contact device as the carriage is advanced step by step, an escapement device for advancing said carriage, a skip bar carried by the carriage, a controlling magnet for causing said skip bar to disconnect the escapement device from control of the carriage and settable means including plug connections for causing a. circuit to be completed by said contact device and one or more of said segments to energize said magnet to automatically effect the disconnection 0i said escapement device.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3578129 *Jul 22, 1968May 11, 1971Mitsubishi Electric CorpControl device for positioning carriages of business machines
US6401706Oct 25, 1999Jun 11, 2002Cee Jay Tool, Inc.Foldable and transportable stone cutting system
U.S. Classification73/156, 400/289.1
International ClassificationG06K5/00
Cooperative ClassificationG06K5/00
European ClassificationG06K5/00