US3187999A

US3187999A - Card punching device

Info

Publication number: US3187999A
Application number: US313370A
Authority: US
Inventors: Seymour Raymond Eugene
Original assignee: Sperry Rand Corp
Current assignee: Unisys Corp
Priority date: 1963-10-02
Filing date: 1963-10-02
Publication date: 1965-06-08
Anticipated expiration: 1982-06-08

Description

June 8, 1965 R. E. SEYMOUR CARD PUNCHING DEVICE 2 Sheets-Sheet 1 Filed Oct. 2, 1963 FIG. 1

PRIOR ART INVENTOR RAYMOND E. SEYMOUR VATTORNEY June 8, 1965 Filed 001;. 2, 1963 R. E. SEYMOUR CARD PUNCHING DEVICE 2 Shets-Sheet 2 United States Patent 3,137,999 CARD PUNCHING DEVICE Raymond Eugene Seymour, Ambler, Pan assignor to Sperry Rand Corporation, New York, N.Y., a corporation of Delaware Filed Oct. 2, 1963, Ser. No. 313,370 14 Claims. (Cl. 234-419) This invention relates to card punching devices and more particularly to improvements in electrically operated card punching devices.

It is an object of this invention to provide an improved form of electrically operated card punching device.

It is yet another object of this invention to provide an electrically operated high speed card punching device which is reliable, is inexpensive to manufacture and maintain and which substantially reduces the sound level of such punching devices.

It is yet another object of this invention to provide an electrically operated card punching device which permits a substantial reduction in the amount of current required for actuating such a device.

It is yet another object of this invention to provide an electrically operated card punching device in which relative movement between components is decreased during non-punching operations and which enhances the life of said punching devices. I

It is a further object of this invention to provide a card punching device which decreases the total number of moving parts.

It is yet another object of this invention to provide an improved form of card punching device wherein the total number of moving parts is reduced by the novel utilization of component members for a plurality of functions.

Further objects and features of the invention will be pointed out in the following description and claims, and illustrated in the accompanying drawings which disclose, by way of example, the principles of the invention and the best mode which has been contemplated for carrying it out.

In the drawings:

FIGURE 1 illustrates a representative form of prior art card punching devices;

FIGURE 2 illustrates a card punching device constructed in accordance with the basic concepts of the invention;

FIGURE 3 illustrates the relative movement of the component portions of the device of FIGURE 2 operating in the non-selected mode;

FIGURE 4 illustrates the relative movement of the component portions of the device of FIGURE 2 when operating in the selected mode.

Similar elements are given similar reference characters in each of the respective figures. 7

Turning now to FIGURE 1, there is illustrated a card punching device representative of many forms of such devices found in the prior art. The operation of devices ofthis type are well known and may be readily determined from a viewing of the figure. A more detailed description of the operation of such card punching devices may be found in US. Patent 900,151, issued, October 6, 1908, to G. H. Davis and C. T. Bowman (see FIGURE 7) and incorporated herein by reference.

For a device of this type, it should be noted that regardless of whether the swinging dog 20 isemployed in a punch or nonepunching cycle, motion will occur about the pivot points 38 and' 33. This continuous rotation about these points will cause an undue amount of wear. As a result punches rarely used will nonetheless be caused to wear. Further, a large amount of current must be supplied to the electromagnet 25 to permit it to over- 3,187,999 Patented June 8, I965 come the effects of the tension spring 30, friction at pivot 27 and the air gap between the armature 28 and the pole of the electromagnet 25, and pull the armature 28into contact with said electromagnet. Due to the close placement of the punches, dictated by the requirernent that 12 punches be available across the short dimen sion" of a record card, the coils must necessarily be closely spaced and of a small enough size to permit the required number of coils to be arranged side by side. Thus, in order to actuate the coils properly, a large current supply must be provided for each coil to provide the required magnetic field to draw the armature 28 against the electromagnet 25. Sudden application of a large current to the electromagnet 25 will cause the armature 28 to be jerked against the pole of the electromagnet 25 producing a great deal of wear at the armature and electromagnet 25 pole andfurther put great strain upon the

pivot pins

38 and 33. The time of application of the current to the electromagnet 25 to permit. selection of the proper position of the swinging dog 20 is critical in that selection must be completed prior to the time that the presser bar 24 contacts'the swinging dog 20.

In the event that the presser bar 24 has already contacted the swinging dog 20, the frictional holding elfects of the contact between the swinging dog 20 and the presser bar 24 would also have to be overcome. This would require larger currents -to the electromagnet 25 as well as strengthening all the elements required to change the position of the swinging dog 20.

The concepts of the invention as shown in FIGURES 2, 3 and 4 make possible the improved operation of punching devices. The embodiment shows the basis by which certain elements of the punching device may be eliminated and their functions assumed by common elements and further the method by which relative motion between many of the members may be eliminated during non-selection cycles to greatly reduce the problem of wear at essential pivot points. Further the device makes possible the reduction of the current required to select individual ones of the punch bars. This is done by causing the armature portions of the arms, to be described below, to sweep across and close to the stop surfaces of the actuating electromagnets during portions or the operating cycle. In this manner, only current required to lock the armature against the surface of the electromagnet is required rather than a greater amount of current which is required not only to lock the armature against the electromagnet but also to pull the armature in opposition to the spring and other forces described above with respect to the prior art devices from the rest position of the armature to contact the electromagnet stop. The form of the invention described shows how a single arm member is employed at its lower portion as a magnet armature and its upper portion as an interposer to drive the selected punch bar. The armature is carried upon a rocking actuating assembly and in cycles in which the associated punch is not to be driven, the inter-poser rides with the rocking actuating assembly eliminating all relative motion between such interposer and the rocking assembly. In this manner, the wear as described with reference to the prior art devices is completely eliminated. Because the function of the electroinagnetis merely to hold and not to draw the armature to contact the electromagnet stop, the noise and shock which is produced in the devices of the prior art are elimina-t'ed making the device a smoother, more rapidly operating punch. Further, since the face of the electromagnet is swept by the armature during every cycle of operation, the time at which the current must be applied to the electromagnetto lock the armature isgreatly expanded and the critical timing relationship required of prior art devices is removed. Since the electromagnet came as stop is swept during the punch retracting stroke and punch actuating stroke great latitude in application of the current is provided.

Referring now to FIGURE 2 a punching device constructed in accordance with the basic concepts of the invention is shown. The device consists of an inverted T-shaped bail 46 having a crossbar 42 and a foot 44. The bail 40 is connected to a pair of support members 41 by means of apivot point 46 located slightly off the center of the length of the crossbar 42. Fastened to the top of the foot 44 by means of the bolt 47 is a cross member 48. The cross member 48 is forked at its end 56 to permit the receipt of the arm member 62 to be described below. Also fastened to the foot 44 by means of the bolt 47 is a spring support member 52.

The cross bar 42 of the bail 40 is connected at one end by means of a pivot pin 54 to a link 56. The link 56 is then connected to cam follower 57 by means of pivot pin 59. The cam follower 57 rides on the inside of the race 61 upon the cam disc 58. A shaft 66, driven by means of a motor (not shown) is connected to the cam disc 58 ofi of center. Thus, as the shaft 60 is rotated in a clockwise direction as shown by the arrow the cross bar 42 and the foot 44 take on an essentially harmonic oscillation about the pivot point 46.

7 Connected to the opposite end of the cross bar 42 is the arm 62 which is connected by means of the pivot pin 64. The arm 62 has a lower portion 66 designated the armature and an upper notched portion 68 designated the interposer. The notch of interposer 66 has a first surface 69 which operates upon the lower edge of the punch bar 74, to be described below, during the select operation to permit punching. A further surface 71 is provided in the notch of interposer 68 to permit engagement with the notch of punch bar 74 during the punch retraction portion of a punching cycle, to be described below. Finally the upper end of the interposer 68 is beveled at surface 83 to permit the interposer 68 to be moved out of contact with the punch bar 74 as interposer 68 moves in its arcuate path during non-select operating cycles as will be described. The upper portion of the arm 62 is urged into contact with the fork 56 of the cross member 43 by means of a tension spring 70 connected between the spring support member 52 and the upper portion 63 of the arm 62. The effect of the tension spring 70 is to cause the arm 62 to be tightly locked into the fork 50 and cause the arm 62 to be rotated with the bail 46 as the bail is moved about its pivot 46. Thus the armature 66 of the arm62 tends to sweep across the stop 73 during the entire movement of bail 40. The position of the arm 62 relative to the movement of the bail 40 is depicted in FIGURE 3. This mode of operation is designated the non-selected mode and shows the movement of the arm with the rocking of the bail 40 such that no relative motion exists between the interposer portion 68 of arm 62 and the rocking bail 40. As shown, the interposer 68 travels in an arcuate path such that no contact is achieved between the notched portions of the interposer 68 and the punch bar 74. Thus no punching can take place.

Returning now to FIGURE 2, the elements required for punching will now be described. As shown in the figure electromagnet 72 is placed in such a manner as to be adjacent to the armature portion 66 of the arm 62. The notched portion 68 of-the arm 62 is arranged to fit in a notch 75 in the punch bar 74. The punch bar 74 is arranged to move in the perforation 76 of a die block 78 into the aperture or perforation 86 of a die plate 82.

In order to make the device punch during a selected cycle the following events are made to occur. As the link 56 moves to its uppermost position the stop 73 of' the electromagnet '72 is swept by armature 66 of the arm 62. During the sweep the electromagnet is actuated by means (not shown). This wide latitude is allowed for actuation of the electromagnet. The current applied to the electromagnet is sufficient to keep the armature 66 in contact with the stop 73 and guide its path of motion as bail 46 is rotated about its pivot point 46 but is not sufficient to prevent relative motion of the arm 62 with respect to the electromagnet 72. During the selection cycle the armature 66 and in turn the arm 62 will have a path of motion which is essentially vertical rather than arcuate as described with reference to FIGURE 3 during the unselected mode. The application of the field by the electromagnet 72 to the armature 66 will cause the bail 40 to withdraw from the arm 62' as the link 56 proceeds to its lowest position. This motion will overcome the effects of the tension spring 70 urging contact between the arm and the cross member 48. The surface 69 of the notched portion of the arm 62 will remain in contact with the lower edge of the punch bar '74 and cause the bar to be moved in an upward direction permitting the punching of a record 84 placed between the dieblock 78 and the die plate 82. The movement of the device during the select cycle is illustrated in FIGURE 4. In FIGURE 4 the device is shown as having completed a punch operation, that is the punch bar 74 has entered the record 84 and the die plate 82. As the link 56 starts to move towards its uppermost position again, the bail 40 will be rotated .in a clockwise direction causing the arm to be displaced downwardly. The surface 71 of the interposer 68 acts on the lower edge of notch 75 of punch bar 74 causing the punch bar 74 to be withdrawn during the downward motion of the arm 62 .and the bail. 40. As the link 56 arrives in its lowermost point, the current in the electromagnet 72 will be turned ofi releasing the arm 62 from contact with the stop 73 and allowing the tension spring 76 to urge the upper portion of the arm 62 back into contact with the fork 50 of the cross member it should now be evident that during the non-select cycle, that is when no punching operation is to be performed, that there is no relative motion between the arm 62 which acts as the interposer and the rocking actuating assembly itself. Thus, there is no wear at the pivot point 64 which is comparable to the points of Wear of the pivot pins 38 and 33 of the prior art device depicted in FIGURE 1. Further the single arm member 62 is employed both as the interposer and as the armature thus permitting the replacement of two individual portions as required by the swinging dog 20 and the armature 28 of the said prior art device. Additionally since the armature 66 of the arm 62 is during a portion of its cycle of operation in close contact with the electromagnet 72 only a small amount of current is required to lock the relative position of the arm 62 with respect to the electromagnet. No large amount of current is required to withdraw the armature from its rest position against a spring to contact the electromagnet itself. Further due to the lack of movement of the armature from a rest position to a contact position as would be required with the armature 28 of FIGURE 1 no noise is encountered during the locking operation. This further reduces the possible wear on the stop 73 of the electromagnet 72 and the armature 66 of the arm. Additionally no jerking excessive wear takes place on the pivotal points connecting the electromagnet to the interposer as in prior art devices. The time of application of the current is not critical and thus an accurately timed source is not required.

It should be understood tht while only a single punch unit has been shown, as many punch units as desired may be'stacked to permit the punching of as many row posi- While there have been shown and described and pointed out the fundamental novel features of the invention as applied to the preferred embodiment, it is understood that various omissions and substitutions and changes of the form and details of the device illustrated and its operation may be made by those skilled in the art, without departing from thespirit of the invention.

The embodiments of the inventionin which an ex elusive property or privilege is claimed are defined as. follows:

1. In a record perforating device, a punching assembly comprising: a bail member; drive means connected to said bail member for moving said bail member in an arcuate path; a crossbar coupled to said bail member: an arm having an upper portion adapted to engage a punch bar and a lower portion adapted to act as an armature; a pivot pin for connecting said arm to said bail member to permit said arm to move about said pivot pin; biasing means connected to said cross bar andsaid arm to hold said arm against said crossbar, said biasing means causing said arm to move in an arcuate path as said bail member is driven; a punch bar; electromagnetic means disposed adjacent to the lower portion of said arm; adapted to be selectively actuated to cause said arm to overcome the elfects of saidbiasing means and be separated from said crossbar and move in a vertical direction to engage said punch bar, moving said punch bar to a position to permit perforation of a record.

2. In a record perforating, device, a punching assembly comprising: a bail member; drive means connected to said bail member for moving said bail member in an arcuate path; a crossbar coupled to said bail member, said crossbar having a forked receiving surface to receive an arm; an arm having an upper notched portion adapted to engage a punch bar and a lower portion adapted to act as an armature; a pivot pin for connecting said arm to said bail member to permit said arm to move about said pivot pin; biasing means connected to said crossbar and said arm to hold said arm in said forked receiving surface of said crossbar, said biasingmeans causing said arm to move in an arcuate path as said bail member is driven; a punch bar, said punch bar having a lower notched portion to accept the notched portion of said arm; electromagnetic means disposed adjacent to the lower portion of said arm adapted to be selectively actuated to cause said armature portion of said arm to be drawn against said electromagnetic means and causing said upper notched portion of said arm to separate from said forked receiving surface of said crossbar, overcoming the effects of said biasing means, said arm moving in a vertical direction as said bail member is driven, to move said punch bar to a position to permit perforation of a record.

3. In a record perforating device, a punching assembly comprising: a bail member; drive means connected to said bail member for moving said bail member in an arcuate path; a crossbar coupled to said bail member, said crossbar having a forked receiving'surface to receive an arm; an arm having, an upper portion adapted to engage a punch bar and a lower portion adaptedto act as an armature; a pivot pin for connecting said arm to said bail member to permit said arm to move about said pivot pin; electromagnetic means disposed adjacent to the lower portion of said arm, the lower portion of said arm sweeping across said electromagnetic means as said arm is moved by said driven bail member; biasing means connected to said crossbar and said arm to hold said arm in said forked receiving surface of said crossbar, said biasing means causing said arm to move in an arcuate path as said bail member is driven; apunch bar, said punch bar engageable with the said upper portion of said arm; said electromagnetic means beingadapted to be selectively actuated to cause said armature portion of said arm to be drawn against said electromagnetic means and causing said upper portion of said arm to separate from said forked receiving surface of saidcrossbar, overcoming the effects of said biasing means, said arm moving in a vertical direction across said electromagnetic means as said bail member is driven, to engage and move saidtpunch bar to a position to permit perforation of a record.

4. In a record perforating device, a punching assembly comprising: a bail member; drive means connected to said bail member for moving said bail member in an arcuate path; a cross bar coupled to said bail member, said crossbar having a forked receiving surface to receive an arm; a punch bar, 'saidpunch bar havinga lower notched portion; an-arm having an upper notched portion engaging the notched portion of said punch bar; a-pivot pin for connecting said arm to said bail member to permit said arm to move about said pivot pin; and biasing means connected to-said crossbar and said arm to hold said arm in said forked receiving surface of said crossbar, said biasing means causing said arm'to move in an arcuate path as said bail member is driven removing the notched portion of said arm from the notched portion of said punch bar.

5. In a record perforating device, a punching assembly comprising: a bail member; drive means connected to said bail member for moving said bail member in an arcuate path; a crossbar coupled to said bail member, said crossbar having a forked receiving surface to receive an arm; a punch bar, said punch bar having a lower portion engageable with an arm; an arm having an upper portion engageable with the lower portion of said punch bar; a pivot-pin for connecting said arm to said bail member to permit said arm to move about said pivot pin; and biasing means connected to said crossbar and said arm to hold said arm in said forked receiving surface of said crossbar, said biasing means causing said-arm to move in an arcuate path as said bail member is driven causing said upper portion of said arm to move without contact, past the lower portion of said punch bar.

6. In a record perforating device, a punching-assembly comprising: a bail member; drive means connected to said bail member for moving said bail member in an arcuate path; a crossbar coupled to said bail member, said crossbar havinga forked receiving surface to receive an arm; a punch bar, said punch bar having a lower notched portion; an arm having an upper notched portion engaging the notched portion of said punch barand a lower portion adapted to act as an armature; a pivot pin for connecting said arm to said bail member to permit said arm to move about said pivot pin; electromagnetic means disposed adjacent to the lower portion of said; arm, the lower portion ofsaid arm sweeping across said electromagnetic means as said arm is moved by said driven bail member; and biasing means connected to said crossbar and said arm to holdsaid arm in said forked receiving surface of said-crossbar, said biasing means causing said arm to move in an arcuate path as said bail member is driven removing the notched portion of said arm from the notched portion of said punch bar.

7. In a record perforating device, a punching assembly comprising: a bailmember; drive means connected to said ball member for moving said bail member in an, arcuate path; a crossbar coupled to said bail member, said crossbar having a forked receiving surface to receive an arm, a punch bar, said punch bar having a lower notched portion; an arm having an upper notched portion engaging, the notched portion of said punchbar and a lower portion adapted to act as ant-armature; a pivot pin for connecting said arm to said bail member to permitsaid arm to move about said pivot pin; electromagnetic means disposed adjacent to the lower portion of said arm, the lower portion of said arm sweeping across said electromagnetic means as said arm is' moved by said driven bail member; biasing means connected to said crossbar and to the upper portion of said arm tohold said arm in said forked receiving surface of said crossbar, said biasing means causing said arm to move in an arcuate path, as said bail member is driven, removing the notched portion of said :arm from the notched portion. of said punch bar; said electromagnetic means being adapted to be selectively actuated to cause said armature portion of said arm to be drawn against'said electromagnetic meansiand causing said upper notched portion of said arm to separate from said forked receiving surface of said crossbar, overcoming the effects of said biasing means, said arm moving in a vertical direction across said electromagnetic means as said bail memberis driven, to move said punch bar to a position to permit perforation of a record.

8. In a record perforating device, a punching assembly comprising: a bail member; drive means connected to said bail member for moving said bail member in an armate path; a plurality of crossbars coupled to said bail member; a plurality of arms, each having an Upper portion adapted to engage a punch bar and a lower portion adapted to act as an armature; a pivot pin for connecting said arm to said bail member to permit said arm to move about said pivot pin; a plurality of biasing means each connected to a single crossbar and its associated arm to hold said arms against said crossbars, said biasing means causing said arm to move in arcuate paths as said bail member is driven; a plurality of punch bars, one associated with each arm, a plurality of electromagnetic means, one each disposed adjacent to the lower portion of each of said arms adapted to be selectively-actuatedto cause its associated one of said arms to overcome the effects of its biasing meansand be separated from said bail and move in a vertical direction to engage its associated one of said punch bars, moving s id punch bars to a position to permit perforation of a record.

9. In a record perforating device, a punching assembly comprising: a bail member; drive means connected to said bail member for moving said bail member in an arcuate path; a plurality of crossbars coupled to said bail member, each of said crossbars having a forked receiving surface to receive an arm, a plurality of arms, each having an upper notched portion adapted to engage a punch bar and a lower portion adapted to act as an armature; a plurality'of pivot pins, each connecting one arm to the bail member to permit said arms to move about said pivot pins; a plurality of biasing means each connected to a single crossbar and its associated arm to hold said arms in said forked receiving surface of said crossbars, said biasing mean causing said arms to move in an arcuate path as said bail member is driven; a plurality of punch bars,

one associated with each arm, said punch bars having a lower notched portion to accept the notched portion of its associated arm; a plurality of electromagnetic means one each disposed adjacent to the lower portion of each of armature portion of its associated one of said arms to be drawn against saidelectromagnetic means and causing said upper notched portion of said associated arm to separate from said forked receiving surface of its associated crossbar, overcoming the effects of its associated biasing means, said arms moving in a vertical direction as said bail member is driven, to move their associated punch bars to a position to permit perforation of a record.

It In a record perforating device, a punching assembly comprising: a bailmember; drive means connected to said bail member for moving said bail member in an arcuate path; a plurality of crossbars coupled to said bail memberreach of said crossbars having a forked receiving surface to receive an arm; a plurality of arms,

each having an upper portion adapted to engage a punch bar and a lower portion adapted to act as an armature; a plurality of pivot pins, each connecting one arm to the bail member to permit said arms to move about said pivot pins; a plurality of electromagnetic means each disposed adjacent to the lower portion of each of said arms, the lower portion of said arm sweeping across said electromagnetic means as said arm is moved by said driven bail member: a plurality of biasing means each said arms adapted to be selectively actuated to cause the V connected to a single crossbar and its associated arm to hold said arms in said forked receiving surface of said crossbars, said biasing means causing said arms to move in arcuate paths as said bail member is driven; a plurality of'punch bars, one associated with each arm, said punch bars engageable with the upper portion of its associated arm; said electromagnetic means being adapted to be selectively actuated to cause the armature portion of its associated one of said arms to be drawn against said electromagnetic means and causing said upper portion of said associated arm to separate from said forked receiving surface of its associated crossbar, overcoming the effects of its associated biasing means, said arms moving in a vertical direction across its associated electromagnetic means as said bail member is driven, to engage and move their associated punch bars to a position to permit perforation of a record.

11. In a record perforating device, a punching as sembly comprising: a bail member, drive means connected to said bail member for moving said bail member in an arcuate path; a plurality of crossbars coupled to said bail member each of said crossbars having a forked receiving surface to receive an arm; a plurality of punch bars said punch bars each having a lower notched portion; a plurality of arms, each having an upper notched portion engaging the notched portion of its associated punch bar; and a lower portion adapted to act as an armature; a plurality of pivot pins, each connecting one arm to the bail member to permit said arms to move about said pivot pins; and a plurality of biasing means each connected to a single crossbar and its associated arm to hold said arms in saidforked receiving surface of said crossbar, said biasing means causing said arms to move in an arcuate path as said bail member is driven, removing the notched portions of said arms from the notched portions of their associated punch bars.

12. In a recordperforating device, a punching as sembly comprisin a bail member, drive means connected to said bail member for moving saidbail member in an arcuate path; a plurality of crossbars coupled to said bail member, each of said crossbars having a forked receiving surface to receive'an arm; a plurality of punch bars said punch bars each having a lower portion engageable with an arm;'a plurality of arms, each having an upper, portion engageable with the lower portion of its associated punch bar; and a lower portion adapted to act as an armature; a plurality of pivot pins, each connecting one arm to the bail member to permit said arms to move about said pivot pins; and a plurality of biasing means each connected to a single crossbar and its associated arm to hold said arms in said forked receiving surface of said crossbars, said biasing means causing said arms to move in an arcuate path as said bail member is driven causing said upper portion of said arm to move Without contact, past the lower portion of said punch bar.

13. In a record perforating device, a punching assembly comprising: a bail member, drive means connected to said bail member for moving said bail member in an arcuate path; a plurality of crossbars coupled to said bail member, each of said crossbars having a forked receiving surface to receive an arm; a plurality of punch bars, said punch bars each having a lower notched portion; a plurality of arms each having an upper notched portion engaging the notched. portion of its associated punch bar and a lower portion adapted to act as an armature; a plurality ofpivot pins, each connecting one ann to the bail member 'to permit said arms to move about said pivot pins; a plurality of electromagnetic arms in said forked receiving surface of said crossbars,

said biasing means causing said arms to move in an arcuate path as said bail member is driven, removing the notched portions of said arms from the notched portions of their associated punch bars.

14. In a record perforating device, a punching assembly comprising: a bail member, drive means connected to said bail member for moving said bail member in an arcuate path; a plurality of crossbars coupled to said bail member, each of said crossbars having a forked receiving surface to receive an arm; a plurality of punch bars, said punch bars each having a lower notched portion; a plurality of arms each having an upper notched portion engaging the notched portion of its associated punch bar and a lower portion adapted to act as an armature; a plurality of pivot pins, each connecting one arm to the bail member to permit said arms to move about said pivot pins; a plurality of electromagnetic means one each disposed adjacent to the lower portion of each of said arms, the lower portion of said arms sweeping across their associated electromagnetic means as said associated arms are moved by said driven bail member; a plurality of biasing means each connected to a single crossbar and to the upper portion of its associated arm to hold said arms in said forked receiving surface of said crossbars, said biasing means'causing said arms to move in an arcuate path as said bail member is driven, removing the notched portions of said arms from the notched portions of their associated punch bars; said electromagnetic means being adapted to be selectively actuated to cause the armature portion of its associated arm to be drawn against said electromagnetic means and causing the upper notched portion of said associated arm -to separate from the forked receiving surface of said associated crossbar, overcoming the effects of its associated biasing means, said arms moving in a vertical direction across their associated electromagnetic means as said bail member is driven, to move their associated punch bars to a position to permit perforation of a record.

References Cited by the Examiner UNITED STATES PATENTS 3,018,037 1/62 Stemme 234-419 3,051,377 8/62 Bradbury 234-115 3,100,599 8/63 Hebert 234119 X ANDREW R. JUHASZ, Primary Examiner.

WILLIAM LAWSON, Examiner.

Claims

1. IN A RECORD PERFORATING DEVICE, A PUNCHING ASSEMBLY COMPRISING: A BAIL MEMBER; DRIVE MEANS CONNECTED TO SAID BAIL MEMBER FOR MOVING SAID BAIL MEMBER IN AN ARCUATE PATH; A CROSSBAR COUPLED TO SAID BAIL MEMBER; AN ARM HAVING AN UPPER PORTION ADAPTED TO ENGAGE A PUNCH BAR AND A LOWER PORTION ADAPTED TO ACT AS AN ARMATURE; A PIVOT PIN FOR CONNECTING SAID ARM TO SAID BAIL MEMBER TO PERMIT SAID ARM TO MOVE ABOUT SAID PIVOT PIN; BIASING MEANS CONNECTED TO SAID CROSS BAR AND SAID ARM TO HOLD SAID ARM AGAINST SAID CROSSBAR, SAID BIASING MEANS CAUSING SAID ARM TO MOVE IN AN ARCUATE PATH AS SAID BAIL MEMBER IS DRIVEN; A PUNCH BAR; ELECTROMAGNETIC MANS DISPOSED ADJACENT TO THE LOWER PORTION OF SAID ARM; ADAPTED TO BE SELECTIVELY ACTUATED TO CAUSE SAID ARM TO OVERCOME THE EFFECTS OF SAID BIASING MEANS AND BE SEPARATED FROM SAID CROSSBAR AND MOVE IN A VERTICAL DIRECTION TO ENGAGE SAID PUNCH BAR, MOVING SAID PUNCH BAR TO A POSITION TO PERMIT PERFORATION OF A RECORD.