US1944673A - Paper feeding mechanism - Google Patents

Description

Patented Jan. 23, 1934 PAPER FEEDING MECHANISM Diedrich Friedrich Schumacher, Berlin-Britz, Germany, assignor, by mesne assignments, to International Business Machines Corporation, New York, N. Y., a corporation of New York Application June 13, 1928, Serial No. 285,007, and in Germany January 23, 1928 18 Claims. (01. 235-58) This invention concerns accounting machines of a clutch, the associated element 12 of which and has more particular relation to improveis splined to a card feeding shaft 13. The gear ments in the line-spacing devices for the paper train 14 is driven by shaft 13 and is commonly strip receiving the itemsand totals thereof. used in tabulating machines for feeding cards to It is a broad object of the present invention to analyzing brushes by feeding rollers 15. In ad- '00 provide improved and simplified means whereby dition, one of the gears 14 reciprocates a conan extra line spacing operation occurs upon a necting rod 16 which is similar to that ordichange in the group classification of items. narily used in tabulators for drawing cards sin- It is a further object of the present invention gly from a stack 17 into the machine by the to provide improved and simplified means whereusual picker 18, where they are engaged by the 68 by the items and the total of a group of items feed rollers 15, cards being fed as long as the appear together and to further differentiate the clutch connection is established. total printed from the next group of items printed As the cards are fed to the analyzing brushes by effecting an extra line spacing operation after the perforations are sensed and the items reprea total printing operation. sented thereby are transposed to the registering More specifically it is an object of the present mechanism as well as to the printing devices. invention to provide improved and simplified Prior to each printing operation it is desirable, means whereby a line spacing operation of the of course, to space the sheet to prevent over-.- paper occurs in addition to that preceding the printing. The preferred mechanism for effecting 20 printing of' the total whereby a blank space sepspacing of the paper'comp'rises a pair of ratchet arates the total from the next item to be printed. wheels 19 and 20 carried by the shaft 21 which In carrying out the present invention duplicate supports the platen roller 22 around which the paper feeding devices are provided, one normally paper strip 23 is partially wound. Associated functioning upon each item listing operation. with ratchet wheel 19 is an actuating lever 24 25 The supplemental paper feeding device is norhating a tooth 25 adapted to be retained in opermally inoperative but functions at the initiaative eng W the ratchet W ee t h tion of the total printing cycle and again at by a spring 27. When'the actuating lever 24 is the termination of the total printing cycle, after ai by a C 8 0 S a t 13 the teeth 25 Of the which time the paper is given a, step of movelever 24 slips idly over the ratchet wheel 19 with- 30 ment by the regular paper feeding devices to out effecting any movement of the platen roller 85. receive the first item of the next group of items. However, W lever 24 is IeStOred y The extra line spacing movement provides a Spring occasioned y the roller 0 0f lever 24 blank space which separates the total printed droppi Off e h point of the ca the from the first item of a succeeding group. ver 24 will partially rotate the ratchet wheel 19,

36 Referring t the dr ing h rein th is shaft 21 and platen 22 to space the paper after shown what is considered to be the preferred which the item is P This Operation e f rm of the invention; sues upon each card feeding cycle so that as each Fig. l is a perspective diagrammatic view of item p esen ed by a card is Printed it is Sui the card feeding and line spacing devices comably Sp from the Preceding m.

40 prising single embodiment of t present cooperatively associated with the ratchet vention; wheel 20 in a similar manner is an actuating le- Fig. 2 illustrates some of the parts shown in 31 but it Wil1 be Observed that, du m Fi 1 i th normal r 13 position of th t printing operations its roller 32 is normally (see later and showing a certain member unlatched Fig. 4) held t Of gement with a cam 33 45 and in readiness to fall urged by, its related a so driven y the card feeding S a t 13. This spring; p relation is effected by the latching of an arm-34 Fig. 3 is a concrete example of a record strip fixed to a shaft 35 which shaft carries at its end printed by the present machine. an arm 36 articulated to the lower end of lever Figs. 4-7 are different views in side -eleva- 31. The latching relationship just referred to is 50 tion which disclose the configuration of a parpreferably effected by an arm 37 which is urged ticular cam and its relation to a certain memby a spring 37a to normally abut the clutch eleh r, ment 12, the arm 37 having its upper end under In the drawing, reference character 10 desthe free extremity of arm 34. ignates a constantly rotating shaft of the tabu.- Tabulating machines are ordinarily equipped 5 lating machine to which is fixed one element 11 with control mechanism whereby a total is automatically printed after the last card of a group of cards of like classification is tabulated. It will be observed then, that as long as the successive cards are of the same classification or group control number, the machine continues listing of items. When a card having a different group control number is presented to the analyzing brushes certain mechanism comes into play to cause stoppage of the feeding of cards and the setting up of the total taking devices of the machine to take a total of the items that have been accumulated from the cards of the previous group, all as explained in the patent to Lake 1,600,413.

It is desirable, of course, that in order to readi- 1y identify the total with the group of related items it be suitably spaced by a blank space from the next item and, in the present instance, this is accomplished by the mechanism described as follows:

When card groups change, the feeding of cards is discontinued and in the present instance; this is effected by a controlling member 38, the upper end of which has a suitable connection to clutch element 12 and which member is shifted to the left (Fig. 2) by any suitable electrical or mechanical means whenever card groups change. In the shifted position of member 38, shaft 13 is disconnected from driving shaft 10. As clutch element 12 is shifted, latching arm 3"! will be rocked, disengaging its upper end from the'free extremity of arm 34 whereupon spring 39 will draw the actuating lever 31 downwardly until roller 32 strikes the point 40' of cam 33 (see Fig. 5) to cause a partial rotation of shaft 21 and platen roller 22, immediately spacing the paper so that the total to be subsequently printed will be printed in the space provided by the operation just described and immediately under the last item of th roup.

The total printing cycle-occurs during the time shafts and 13 are unclutched at which time no card feeding operation takes place. At the termination of the total printing cycle shafts 10 and 13 are subsequently clutched by the reverse shifting of the member 38. However, arm 37 does not follow the movement-of clutch element 12 as it is prevented by the engagement of said arm with the arm 34 which is still in its lowered position. Upon a partial rotation of the shaft 13 synchronous with the initiation of the next card feeding cycle roller 32 will drop off the point 40' of cam 33 (see Fig. 6) partially rotating ratchet wheel to suitably blank space the printed total from the first of the items pertaining to the next group of cards.

At some point during the first card cycle a projection or'the highest point of the cam 33 will engage roller 32 rocking shaft 35 to enable arm 37 to be urged by spring 37a to a position abutting clutch element 12 but with its upper extremity beneath the arm 34 to re-latch arm 34 in its normal elevated position (see Fig. 7). At substantially the termination of the first card cycle, cam 28 will effect a line spacing movement of the paper which space will be taken up.

ing printed one after the other.

erations of a record sheet during successive item printing operations, a normally latched supplemental paper feeding device, and means whereby the unlatching of the supplemental paper feeding device effects an additional line spacing operation.

2. A machine of the class described comprise ing separate trains of mechanism for effecting paper feeding operations, a common driving shaft therefor, one of said trains having an inoperative relationship with the driving shaftvand means whereby a paper feed operation occurs prior to establishing an operative relationship between the last mentioned train and the driving shaft.

3. A machine of the class described including means for effecting line spacing operations of a record sheet during successive itei'n printing operations, a supplemental paper feeding device for effecting an additional line spacing operation, driving means therefor comprising a cam and means for preliminarily feeding the record strip prior to establishing a cooperative relationship between the supplemental paper feeding device and said cam.

4. A machine of the class described comprising separate trains of mechanism for effecting line spacing operations of a record sheet one of said trains being normally ineffective, a common shaft therefor and means whereby the ineffective train is rendered operable in a plurality of successive steps of operation, one of said steps occurring prior toestablishing an operative relationship between the ineffective train and said shaft.

5. A machine of the class described comprising in combination a platen, means for effecting line spacing operations of a record sheet by operating the platen during listing operations and supplemental means for effecting line spacing operations ineifectiveduringlisting operations both of said means being operated by a common power shaft and said supplemental means effecting an operation of the platen to effect a line spacing operation of an additional extent as an incident to total taking operations.

6. A record controlled tabulator, including a shaft for driving the card feeding mechanism and listing mechanism, a paper spacing device comprising means operated by the shaft for effecting paper spacing in predetermined increments during listing operations and means adjusted by the shaft for effecting extra paper spacing both at the beginning and at the end of a listing run.

'7. In a machine of the class described, in combination, a shaft operated during listing operations, means operated thereby for effecting a line spacing operation during each listing operation, a supplemental line spacing means and means whereby the latter is set for operation by an additional line spacing operation.

8. In a machine of the class described, in combination', a normally latched line spacing device, a device operable during total taking operations, means whereby said device unlatches the line spacing device, and means whereby the line unlatching of the line spacing device effects the line spacing operation. .1

9. In a machine of the class described, in combination, means for feeding a record strip during item listing operations, separate means for feeding the record strip an additional amount to separate the last of a group of items from the following printed total, a common power shaft for operating both feeding means, and means whereby said power shaft causes the operation of the last named feeding means whereby the latter is operable to effect successive record strip feeding operations while the first named feeding means is ineffective to accomplish a record strip feeding operation.

10. Ina machine of the class described, in combination, a line spacing device operated during each listing operation, a supplemental line spacing device, means whereby the latter is set for operation during a listing operation, and means operable during a total taking operation for causing the supplemental device to operate.

11. In a machine of the class described, in combination, a line spacing device operated during each listing operation, a supplemental line spacing device, means whereby the supplemental line spacing device is set for operation, during a listing operation and means whereby the latter is subsequently effective in a plurality of steps of operation.

12. A record controlled machine having a card feeding mechanism operable during item listing operations controlled by classified record cards, in combination with a line spacing device operated for each item listing operation, a supplemental line spacing device, and means whereby the latter device is set for operation during the first listing operation which follows a change in classification of record cards.

13. In a machine of the class described the combination with a platen, of a train of mechanism for eiiecting line spacing operations of a record sheet during item printing operations by operating the platen, means comprising a separate train of mechanism for operating the platen to effect an additional line spacing of the record sheet when a total is printed, and a rotatable driving shaft of the machine for both trains of mechanism.

14. In a machine of the class described the combination with a platen, a train of mechanism for effecting line spacing operations of a record sheet by operating the platen during item printing operations, means comprising a separate train of mechanism for operating the platen to effect an additional line spacing of the record when a total is printed, a rotatable shaft, and means whereby said shaft in its rotation controls the operation of both of said spacing mechanisms in an alternating sequence.

15. In a machine of the class described thecombination with'a train of mechanism for effecting line spacing operations of a record sheet, of means comprising a separate train of mechanism for eifecting an additional spacing of the record sheet when a total is printed, a drive shaft of the machine common to both of said mechanisms, and means whereby said shaft in its rotation causes the last named means to be effective after a total is printed while the first mentioned train of mechanism is ineffective to accomplish a line spacing operation.

16. Ina machine of the class described the combination with a device'for effecting line spacing operations of a record sheet during successive item printing operations, of a normally latched device for effecting an additional line spacing operation, means for latching said device, means whereby the unlatching of the additional line spacing device effects a line spacing operation and means for displacing the latching means to unlatch the additional line spacing device when a total is to be printed on the sheet.

17. In a record controlled machine, the combination witlra shaft for driving the card feeding mechanism, of a paper spacing device operated by the shaft for spacing the paper when listing items from the cards; a supplemental paper feeding device and means for operating it, and means operated by the shaft during a listing operation for adjusting said supplemental paper feeding device in position to be operated 'by its operating means.

18. In a record controlled machine, the combination with a shaft for driving the card feeding mechanism, of a spacing device driven by said shaft for separating the items represented by the cards, and means driven by said shaft during a listing operation for causing an additional spacing operation after a total has been 120 DIEDRICH FRIEDRICH SCHUMACHER.

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