US2056393A

US2056393A - Paper feeding device for printing machines

Info

Publication number: US2056393A
Application number: US48271A
Authority: US
Inventors: Didzuns Fritz
Original assignee: International Business Machines Corp
Current assignee: International Business Machines Corp
Priority date: 1935-11-05
Filing date: 1935-11-05
Publication date: 1936-10-06
Anticipated expiration: 1953-10-06
Also published as: FR821039A; NL52226C; DE923944C

Description

Ct 6, 1936# F. DIDZUNS PAPER FEEDING DEVICE FOR PRINTING MACHINES Filed Nov. 5, 1955 3 Sheets-Sheet l TTORNEY @ch E, 193o F. DIDZUNS PAPER FEEDING DEVICE FOR PRINTING MACHINES Filed Nov. 5, 1955 3 Sheets-Sheet 2 lNVENTOR .fC/P:

ATTO R N EY @CL 6, 1936. F1 DIDZUNS Y 2,056,393

PAPER FEEDING DEVICE FOR PRINTING MACHINES Filed Nov. 5, 1935 3 Sheets-Sheet 3 ATTTORN EY Patented Oct. 6, .1936

UNITED STATI-:s

PATENT OFFICE Fritz Didzuns, Endicott, N. Y., assignor to International Business Machines Corporation, New York, N. Y., a corporation of New York ApplicationvNovember 5, 1935, Serial No. 48,271

18 Claims.

This invention relates tovrecord strip feeding mechanisms provided for printing mechanisms employed in record controlled tabulatlng ma-v vbe entered into. an accumulator and printed by a suitable printing mechanism. Such machines are adapted to print each amount by the printing mechanism as well as the total derived from the accumulator and machines of this type have heretofore been equipped with record strip spacing devices to automaticallyspace each printed.

item and the total.

It is desirable, however, 'to widely*^space todiiferentiate each group of lrelated items and accompanying total from the next group of items and its accompanying total in' order that the record strip may subsequently be severed into separate sheets making up abili or at times it may be desirable to provide a suitable spacing between each group of items and totals to accommodate a head spacing, etc. y

The improved record strip feeding mechanism disclosed herein is adapted to not only automatically space the record strip but` is also provided with control mechanisms whereby the recrd strip mayfbe fed'the desired amount.

It is a further object of the invention to provide variable record strip feeding operations under control of one of the tabulating records controlling theA machine.

In the illustrative embodiment, the first record of each group is perforated in a selected column and the position of the perforation is adapted to automatically cause the desired extent of record strip feeding operation.

A still further objectrof the invention is to provide a suitable electrical controlling mechanism under control of the perforated record to adjust the record strip spacing mechanism and preferably as an accompanimentto printing a total.

In carrying out the present invention, a sele'cted column of the record card is perforatedv lays is provided and each relay is adapted to select for operation a particular record strip spacing control magnet. A general operator, preferably operated electrically, is adapted to be operated a predetermined extent under'control cf each of the record strip spacing Vcontrol magnets and the general operator is adapted to cause the predetermined rotation of the customary platen carrying the record strip.

A still further object of thepresent invention is to provide a brake, preferablyv of the electromagnetic type, for cushioningl the movement of the general operator at its viinal movement thereby preventing an overthrow movement l of the platen during the record strip feeding operation.

While the improved record strip spacing mechanism is shown in the present embodiment as being operated as an accompaniment to printing a total, it will be understood that such application isv for f illustrative purposes only. By suitable modifications, 'which are obvious to those skilled in the art, the improved feeding mechanism may also be employed in connection with spacing the record strip as an accompaniment to printing an item, or for other purposes.

Other applications of the present embodiment will also be obvious as the invention is understoodby recourse to the present specification.

Other and relatively important objects will be apparent as the invention is understood by reference -Ato the following description and accompanying drawings, in which;

Fig. 1 is a view in side elevation of one /embodiment of the invention for accomplishing record strip feeding movements of various extents. 'I'his figure also shows a conventional mechanism for controlling the differential positioning of type bars to a platen.

Fig. 2 is a sectional viewtaken on the line 2--2 of Fig. 1;

Fig. 3 is a sectional view taken on the line 3-3 of Fig. 1; 'l, y

Fig. 4 is a plan view of part -of the improved mechanism illustating particularly the mag# netic brake andthe platen rotating mechanism:

Fig. 5 is a detail view of a conventional form of platen operating mechanism for feeding `the record strip when printing an item and also when printing a total;

Fig. 6 is a plan view illustrating the form of record card preferably employed in connection with the present inventionA to control varying record strip feeding operations;

Fig. 7 is anV electrical wiring diagram for the electrical instrumentalities employed in connection with the present invention.

The present invention is shown applied to a tabulating machine of the type fully shown and described in Patent 1,762,145. As explained in this patent a series of classified perforated records I0 of the form disclosed in Fig. 6 is fed through the machine to control the setting of printing devices and entering of values or items in accumulators for summing the values represented on the records. As an incident to feeding a record and performing a tabulating operation a shaft II (Fig. 7) is operated for a single revolution. During the first machine operation, or cycle, the perforated record I0 is fed past a series of control brushes I2 and during a subsequent machine cycle past the value or item entering control brushes I3. The feeding rollers for feeding records in a successive manner from a supply stack to the brushes I2 and I3 are diagrammatically shown in Fig. 7 but are fully described and shown in the Patents No. 1,762,145 and No. 1,600,413.

The records I0 which carry perforations representing the items to be printed and entered in the accumulators are previously sorted into groups so that the records of one classification are together and the groups are fed in sequence. After a group of records is tabulated and the items are .entered in the accumulator a total is taken from the accumulator and printed on the record strip bearing the printed items. These successive item printings require that the record strip be fed a step preferably before each printing operation so astoprevent over-printing.

As more fully shown and described in the aforementioned patent and Patent No. 1,600,413 in the description of the printing mechanism the brushes I3 analyze the several columns of value representing perforations and as each brush I3 locates a perforation it causes a printer control magnet I4 (Fig. 1) to be energized. As the successive index point positions pass the brush I3 a type carrying bar- I5 is elevated synchronously so as to present the type to a platen I6 which corresponds to the particular index 'point analyzed. If a perforation is located at this time magnet I4 is energized and the latter shifts a call rod to the right and rocks a latch member I1 which releases a stop pawl I0. 'Ihe latter engages with an appropriate notch I9 of the type bar. When all the type bars I5 are differentially set the usual printing hammers are released to thereby print on the record strip surrounding the platen I6 the item represented on the record. Thereafter the printing bars I5 are returned to normal in'readiness to be set during the next machine cycle under control of the successive card I0 passing the brushes I3.

'I'he manner in which items are spaced on the record strip from each other is well-known and is fully shown and described in the Patent No. 1,762,145. 'Ihis particular mechanism is also shown in Fig. 5 but is briefly described herein as it forms no part of the present invention.

Numeral 305 represents a rock shaft correspending to the similarly numbered shaft in the Patent No. 1,762,145. To the shaft 305 there is connected an arm 2| having at its upper end a pin 22. As the shaft 305 is rocked in a clockwise direction this pin contacts with a shoulder 23 on a member24 rocking a

unit comprising members

25, 26 since this unit is constructed and connected to member 24 as follows: Lever 25 is pivotally mounted at 21 and is pivot-ally connected at 28 to lever 24. The lever 26 and the lever 24 are each adjustably connected at their left hand ends at points 26s and 24a respectively, to the part 24. Parts 24, and 26 after being once adjusted always operate as a singleunit, and as stated is operated by shaft 305.

A link 29 is connected to the lever 25\and at its other end is connected to pawl and `ratchet device 30 of the usual t-ype for turning the platen I6 a step before each item printing operation.

As more fully shown and described in the aforementioned Patents Nos. 1,600,413 and 1,762,145, the machine to which the present invention is applied has incorporated therewith a mechanism for automatically taking a total from the accumulator when the group numbers of the records I0 change. As previously intimated the records are successively presented to certain analyzing brushes I2 and I3 in order to determine the similarity or dissimilarity of group number designations. Upon a change in a group number tabulating operat-ions from records stop and the machine automatically takes a total.

As more fully shown and described in the Patent No. 1,762,145, the machine upon takinga total causes the operation of mechanism for again rocking the shaft 305 (Fig. 5) before a total is printed thereby separating the last printed item from the total printed on the record strip. Since this mechanism is fully shown and described in Patent No. 1,762,145, it will not be described since it forms no part of the present invention.

It is desirable, however, to feed the record strip to an extent greater than that performed in either item printingor total printing operations in order to give a -wide space between the total printed and the next item to be printed under control of the rst record containing the next group number designation. The improved mechanism for performing this function will now be described in detail. 'Ihe rst record I0 of each new group is perforated in a selected column in order to cause and further control the extent of the record strip feeding operation effected after a total is printed.

In Fig. 6, the record I0 representing the rst card of a group, is shown by way of example perforated in the rst column at the 9 index point posit-ion to cause a record strip feeding 4operation of a certain extent. The machine is further equipped with a means for selecting record strip feeding operations of other extents and in the present embodiment this is effected by perforating column 1 at one of the 7, 8 or 9 index point positions.

Referring now particularly to Fig.. 7, it will be noted that the brush I2 which rst analyzes the rst record of each new group is adapted to contact with a contact block 3| through the perforation in column l", said contact block being connected to the positive line side 32 through cam controlled contacts 33. These contacts are closed by a cam rotated by the shaft I I and the contacts 33 are adapted to be closed during the time that al1 of the index point positions of the record are being analyzed. Brush I2 is electrically connected to a segment 34 against which bears a brush 35 during the time the record is being analyzed. The brush 36 which is electrically connected to the brush 35 is adapted to successively engage with contact points 31 as the card is being analyzed. l

When the 9 index point position is analyzed. for example, the brush 36 will be slightly to the right past the position shown in Fig. 7 to engage with the first contact point 31 and if it is assumed that the 9 index point position is perforated, the circuit will be extended by the commutator from the positive line side to a pick-up magnet 38 of a relay. It is obvious that if the first column is perforated in either the 8 or "7 index point position, magnets 38 of other relays will be selected for energization due to the independent electrical wiring connections 39 between the contact points 31 and the magnets 38 of the relays. Cam controlled contacts 40 are adapted to be closed by a cam secured to the shaft II during the time the index point positions of the record are being analyzed thereby extending the positive line side to relay contacts 4I, one of which is closed by the selected magnet 38, thereby causing the energization of a relay holding magnet 42 of said relays.

The magnets 38 are also adapted to close related contacts 43 and said contacts are connected to the negative line side 44 through cam controlled contacts 45 which are adapted to be closed and are closed before the cam controlled contacts 40 open. Each of the contacts 43 is connected by means of a suitable plug connection 46 to a related spacing control magnet 41 and a holding relay magnet 51. Subscripts a, b and c are used hereinafter to designate particular magnets 41 and associated devices. It will be obvious, therefore, that upon the closure of contacts 43, the associated

magnets

41 and 51 will be connected through the relay contacts 43 and cam controlled contacts 45 to the negativeline side 44. Each of the spacing control magnets 41 and relay magnet 51 is connected to the positive line side through contacts 48 which are closed by a cam rotatable with shaft I I. Contacts 48 are adapted to be closed at the time contacts 45 are closed and contacts 48 remain closed at the end of the item entering operation for the last record of the group. Contacts 40, however, open before the end of the machine operation in which the last record of a group is analyzed thereby causing the holding magnet 42 to be deenergized and since at this time cam controlled contacts 33 are open, the selected relay will be inoperative and the associated contacts 4I and 43 opened.

Contacts 45 are also opened before the end of the machine operation. However, when the selected spacing control magnet 41 is energized the contacts 49 of its associated holding relay 51 are closed thereby connecting the selected spacing control magnet 41 and relay magnet 51 to the negative line side 44 by means of a wiring connection 50 connected to each of the contacts 49.

summarizing, therefore, it will be obvious that when the last record of a group is analyzed by brushes I3, under control of the brushes I2 analyzing the first record of the succeeding group one of the spacing control magnets 41 and related relay magnet will be energized during this machine operation. At the end of the same machine operation the associated

relay comprising magnets

38 and 42 and contacts 4| and 43 will subsequently be rendered inoperative, thereby placing the electrical record strip feeding selecting mechanism in condition ready for the next relay setup operation.

At the end of the machine operation just referred to, cam controlled contacts 48 will be retained closed and the selected spacing control magnet 41 will be held energized by the holding contacts 49 of the related holding relay 51.

As fully shown and described in the aforementhe shaft II and the turning of another shaft is then eected for causing a total taking operation. This shaft is designated herein and in the aforementioned Patent No. 1,762,145 by the reference numeral 3I5. Shaft 3I5 as shown in Fig. 7 is adapted to close contacts 5I after a total has been printed from the accumulator. Closure of contacts 5I will cause the energization of a main operating magnet 52, the function of which will presently be described in detail.

As is best shown in Figs. 1 and 4, the platen I6 is attached to a shaft 53 and to the shaft 53 there is secured a ratchet wheel 54 with which a pawl 55 is adapted to engage. The pawl 55 is pivoted upon one arm of a double arm 56 loosely mounted upon the shaft 53. Pawl 55 is urged by the usual spring to engage the teeth of the ratchet wheel 54 and after the double arm 56 has been turned in a clockwise direction to turn the ratchet wheel 54, it is returned to its normal position by means of a spring 51. Pivoted to the upper portion of the double arm 56 is a link 58 connected to a circular rod of magnetlcal material. The latter passes through a hole in a bracket plate 60 and also at its right end projects for a slight distance within the central portion of the magnet 52. Obviously,

with the construction just descrbed'the rod 59 will be attracted by the magnet 52 and will be l drawn to the right (Fig. l) The rod 59 is provided with lateral cuts 6I and 52 thereby providing stop shoulders 63 and 64. One of the spacing control magnets designated 41e is shown in Fig. 2 and from the construction disclosed in this gure it will be obviousl that when the magnet 41 is energized it will draw towards each other a pair of iron cores 65 thereby rocking` towards each other a pair of levers 66 pivotally mounted at 61 in bracket plate 60 in a scissors-like fashion.

It will be recalled that upon the presentation of the yfirst record I0 of a new group one of the spacing control magnets 41 will be energized and held energized after the total printing operation. Assuming that the magnet 41c, shown at the extreme right in Fig. 1, is energized, it will be obvious that each of the associated pair of levers 66 will act as an abutment to the stop shoulder 64 when the rod 59 is moved to the right due to the energization of the magnet 52. f

Referring now to Fig. 7, the cam controlled contacts 5I are ad-apted to be closed by the cam secured to the shaft 3I5 after a total printing operation. Since at this time the magnet 41 is already energized it will be obvious that movement of the rod 59 to the right will cause a certain movement of the rod and by means of the pawl 55 and ratchet wheel 54 the platen I6 will be rotated to thereby feed the record strip a predetermined extent of operation after the total printing has been effected.

The record strip is fed the smallest amount when the magnet 41a is energized under control of a perforation located in the first record I0 of the new group. The movement of the rod 59, in this case, will be limited by the coaction of the shoulder 63 of the rod 59 with the side of the levers 66 actuated by the magnet 41a. Magnet 41o will c-ause the record to be fed a slightly greater extent than shoulder `64, in this, abutting the levers 66 actuated by the relay magnet 41e.

The maximum feeding movement that can be imparted to the record strip is performed under control of the spacing control magnet 41h. rIllfiis magnet will actuate its related levers 66 and by coaction of said levers with the shoulder 63the movement of the rod 59 will-be limited.

summarizing therefore it will be evident that upon the energization of one of the magnets 41a,41b, or 41c and the subsequent energization of the operating magnet 52, the rod 59 will be given a certain movement causing the pawl to rotate the ratchet wheel 54 and thereby turn the platen the desired extent of movement. This will cause the total last printed to be spaced from the item pertaining to the first record of the new group and the spacing will vary in accordance with the spacing control magnets 41a, 41b or 41c selected for energization.

While the above described mechanism is entirely operative, it is preferable to provide suitable devices for cushioning the movement of the rod 59 caused by the energization of the operating magnet 52. lTo this end the rod 59 at its right end carries a rod 68 carrying a bevelled element 69 adapted to cause the closure of contacts 10a, 10b or 10c. When the magnet 41a is selected for energization, the short movement given to the operating rod 59 will cause the element 69 to close contacts 10a as the operating rod 59 approaches its limit of movement. Correspondingly when rod 59 is given a larger movement under control of magnet 41c, the contacts 10c will be closed towards the limit of movement of the rod 59. In the same manner, contacts 10b are closed when the rod 59 is given its greatest extent of of magnet 51h.

As best shown in Fig. 7, one blade of each of the contacts 10a, 10b, 10c is connected by -a Wire 1I to the positive line side 32. The other blade of each of the sets of contacts 10a, 10b, 10c is individually connected by wires 12 to related relay contacts 13a, 13b and 13o. The particular relay contact closed is dependent upon which relay 51 is energized. Each of the contacts 13a, 13b and 13c are electric-ally connected to wires 14 which serve to tap portions of an electrical resistance 15 which is in series electrically with a. magnet 16 of a magnetically operated brake. The magnet 16 is connected by a wire 11 to the negative line side 44.

From the electric connections just describedit will be obvious that when the rod 59 is given its smallest movement, contact 13a will be closed and insert the greatest amount of resistance in series with the magnet 16 and correspondingly when the operating rod 59 is given its greatest extent of movement contacts 13b will be closed to insert the least amount of electrical resistance in series with the magnet 16.

The preferred form of magnetic brake is disclosed in Fig. 4 wherein it will be seen that within an -annular ring 18 of a stationary plate member 19. there is tted the magnet coil 16. The magnet coil 16 also projects within an annular ring 80 of a ring 8| which is slidably keyed by a key 82 to the shaft 53. -Obviously, when the magnet 16 is energized, it will attract the ring 8l during the nal rotation of the platen I6, thereby functioning as a magnetic' brake and slowing up therotation of the platen.

Obviously, a higher voltage Iis supplied tothe brake magnet 16 when the rod 59 is given its greatest extent of movement to give the maximum braking eff irt and the voltage is reduced movement under control for the smaller amounts of movement of the rod 59. This, as previously intimated, is effected by selection of the desired amount of resistance given by the electrical resistance element 15.

ter the magnet 52 is energized and the rod 59 is given the desired movement, contacts 5| (Fig. 7) are opened thereby permitting spring 51 to restore the operating rod 59 to its normal position.

At the next operation of the machine which comprises a tabulating operation under control of the first record of the new group, the shaft ll will now be rotated and during its initial operation it will open contacts 48 (Fig. 7) thereby causing the deenergization of the selected spacing control magnet 41, relay magnet 51 and the opening of the

related relay contacts

49 and 13. The parts are now in normal position in readiness for another record strip feeding operation selected under control of the first record of the next group.

vWhile 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 claims.

What is claimed is:

l. In a machine of the class described, the combination with a platen, of driving means therefor, a plurality of independently energized electromagnets, means to select an electro-magnet for energization, and means controlled by said electro-magnets for causing an operation of said driving means to an extent dependent upon the electro-magnet energized.

2. In a machine of the class described, in combination, a feeding mechanism for a record strip, a plurality of electro-magnets, means for energizing a selected electro-magnet for creating a predetermined magnetic field, and means controlled by said electro-magnets for causing a variable movement of said feeding mechanism in accordance with the magnetic eld created.

3. In a machine of the class described, in combination, a platen, means for causing an operation of said platen, means including a plurality of solenoids for controlling the extent of operaton of said means, and means comprising individual elements each operated alone for energizing a selected solenoid to predetermine the extent of operation of said platen.

4. In a machine of the class described, in combination, a platen, a driving mechanism therefor, a member adapted to be given movements of variable extents to control the extent of operation of the driving means, a plurality of stop devices for stopping the movement of said member, a series of electro-magnets each adapted by its energization to operate its related stop device, means for selecting a desired electro-magnet for energization, and means for causing a movement of said member.

5. In a machine of the class described, the combination with a platen, of a general operator for driving said platen, a plurality of electromagnets each energized for predetermining the extent of operation of the general operator,

'means for energizing a selected electro-magnet accesos and electrical means for causing an operation of the general operator.

6. In a record controlled machine, the combination with a platen, of means for eilecting a variable operation of the platen, and means operable in response to a single perforation in a record for controlling the operation of the irst named means and to cause an operation of the platen to an vextent .which is variable with the particular location of the single perforation. 7. In a record controlled machine, the combination with means for analyzing a record to determine the location of a perforation, of a platen, a driving means therefor, and a plurality of electro-magnetically controlled means selectively controlled by said analyzing means for controlling-the operation of the platen driving means to cause the latter to be operated to an v`extent which is variable with the location of the perforation in said record.

8. In a machine of` the class described controlled by records occurring in classified groups l demarcated by a special perforated record, a

platen, means for causing an operation of said platen, and means operable in accordance with the location of a perforation -in each special record for determining the extent of operation of said platenv and eiecting an operation to' an extent which is variable with the particularlocation of the single perforation.

9. in a record controlled machine, in combination, a platen, a plurality of electro-magnets, means for analyzing a record and vfor energizing an electro-magnet in accordance with which position in a column said record is perforated, and means controlled by the electro-magnets for causing an operation of the platen to an extent in accordance with the electro-magnet energized.

l0. In a record controlled machine, controlling records bearing designations under control ofl which successively spaced items are printed on a record strip, said records occurring in classified groups, a platen'carrying said record strip, means for causing a variable movement of said-platen, and means controlled by 'a perforation in a record, one record occurring iii/.each group, for determining the operation of said means to cause a movement of the platen to am extent which is variable with the location of the perforation in.

the record. f

ll'. In a machine of tlie class described, in combination, a platen adapted to be line-spaced as successive items are printed under, control of tabulating records, said records occurring in classied groups. means for operating said platen to a variable extent, means for analyzing a predetermined column of a tabulating record demarcating successive groups to determine the location of a single perforation in the column, and

magnet to be energized. and means controlled by said electro-magnets for causing a supplemental rotation of the platen to an extent dependent upon the electro-magnet selected for energization.

13. in a record controlled machine capable of item entering operations, and total taking operations adapted to occur upon the presentation of a record of a newgroup, said machine having a rotatably mounted platen adapted to be linespaced as an incident to item operations, the combination of a plurality of independently energized electro-magnets, means controlled by a perforation in one of the records of each group for causing a selected electro-magnet to be energized, and means controlled by said electro-magnets for causing a supplemental rotation of the platen to an extent dependent upon the electro-magnet selected for energization.

i4. In a machine of the class described, in combination, a platen, a driving means therefor, a plurality of similar elements each operated alone, means controlled by a perforated record for causing the operation of a selected element in one machine cycle, means for continuing the operativeness of the selected element for the subsequent machine cycle, and means for causing the operation of the driving means during the subsequent machine cycle, and to\an extent dependent upon the element selected for operation;

l5. In a machine of the classdescribed, in com- Y bination, a platen, a driving means therefor, electrical means for predetermining the extent of movement given to said platen by said driving means, and means comprising an electro-magneticaily operated braking mechanism for retardlng the movement of said platen. U

16. In a machine of the class described operable in cycles, in combination', a platen carrying a record strip, a driving means therefor, a plurality of electro-magnets, each for governing the extent of movement of saiddriving means, means for analyzing a perforated record and for causing the energization of a selected electro-magnet in one machine cycle., electrical means for holding the energization of the selected electro-magnet and for continuing its energization duringa subsequent machine cycle, and means for causing an operation of the driving means during the subsequent machine cycle to an extent dependent upon the electro-magnet energized.

1'7. In a machine of the class described, in combination,v,a platen, means including a. member.

variable extents, an electro-magnetic brake mechanism including an electro-magnet for netarding the movement of said platen, an electrical resistance in a circuit of said electro-m88- net for controlling the retarding action, and means for varying the amount of electrical resistance in said circuit in accordance with the extent of operation given to said platen.

vFRITZ DIDZUNS.

18. 1n a machine of the classv described, in com-[ I bination, aplaten, means for driving said platen