US2237874A - Paper feeding device - Google Patents

Description

April 8, 1941.

FIG.

K. J. BRAUN PAPER rar-:DING DEVICE Filed Oct. 24, 1939 7 Sheets-Sheet 1 Mu-hg..l

. EIIIIIII l lll uwen-ron KARL J; BRAUN PAPER FEEDING DEVICE 4 Filed Oct.- 24, 1939 '7 Sheets-Sheet 2 l A' uvam-on L o KARL J. BRAUN *f NPM Apri1`s,1941." ig-.1. BRAUN -4 l 2.22.7157@l PAPER FEEDING DEVICE.

Filed Oct. 24. 1939 7 Sheets-Sheet 3 INVEN 0R BY I A'r onNe-:Y'

KARL. J. BRAUNv April s. 1941.

K J. BRAUN funn, Psaum! DEVICE rnedoct. 24; 1959 '1 Shana-sheet 4 "752 l KARL J. BRAUN April 8, 1941. n J. BRAUN l XAPER i/'EEDINGI DEVICE Filed oct. 24. 195s 7 Sheng-sheet s INVENTOR KARL J.BRAUN ATTO RNEY April 8, 1941. K. J. BRAUN PAPER Fnznnm DEVICE' 7 Sheets-Sheet 6 FIG. IO

Filled oct. 24, 1939 FIG.

IBI

w 6.I. m

INV ENTOR KARL. J. BRAUN- April 8,1941. K. J. BRAU'N 2.237.874

PAPER FEEDNG DEVICE Filed oct. 24, 1939 '7 Sheets-sheet 'r FIG.

mvcnron KARL. J BRAUN f Patented' Apr. 8, 1941 yUNITED STATES PATENT OFFICE rarer. maximo nmol:

Karl'lohn BranmNol-th Herrick, Long- Island,

N. Y., assigner to Remington Band Inc.. Buffalo, N. Y., a corporation of Delaware .l f Application October 24, 1939, Serial No. 300,917.

1o claims. (el. er1-3s) This invention relates to paper feeding devices, and more particularly to mechanism whereby 4 cards or form sheets may be fed seratim from a stack in a magazine to a predetermined position wherein the cards or form sheets may be printed.

The present invention is herein shown and described in connection with the wen known Powers tabulating machine which has been in commercial use for many years, and which is described' in a line of patents beginning with the patent to James Powers, No. 1,245,502, ""dated November 6, 1917. Howevenonly so much of the above machine will be shown and described herein as will enable one skilled in the art to clearly understand the .openation of the present invention. While this invention' is herein shown in connection with the above mentioned machine. it will be understood that the invention may be used with other types of machines without departing from' the spirit of this invention.

.. The tabulating machine described inthe above l mentioned line of patents is generally composed of three sections, the base, the intermediate, and lthe headsection upon-which the present invention is mounted.

Generally thebase section of the machine contains mechanism for feeding punched cards, hav- It is an object of this invention to insure that Y only one form sheet or blanl; of a stack is fed to a printing position during one machine cycle.

substantially along the lines 2-2 of Fig. 1, said view being shown as looking from the right-hand 4 side of the machinen ing perforations therein, one at a time. into an analyzing mechanism by which the perforations in the card are sensed. Upon sensing a.v perforation in the card, the analyzing mechanism will cause an interponent in the translator in the intermediate section oi' the machine to rise, setting up a corresponding stop inthe stop basketin the head section of the machine, The stop thus raised limits the forward movement of a corresponding type sector which controls the account- ,ing and printing mechanism of themachine.

The present invention resides in the provision of means for feedingsingle cards or form sheets, such as that used for tax bills, seriatim, to a printing position around a platen,- whereindata that isl sensed, from a punched card and accumulated, may be printed upon said cards or form sheets.

. The stack of 4loi-m sheets or blanks, as they will' hereinafter be referred to, is placed edgewise upon anladiustable throat, which cooperates with -a stripper roll upon which is removably secured a plurality of rubber strips adaptedto pickup one l blank and feed it between the stripper roll and l another roll cooperating therewith. The blank is then fed by the above rolls to a'position wherein the data may be printed upon said blank. After Fig. 6;

l Fig. 3 is a left-hand elevational view of the ma#- chine disclosing the drive mechanism for feeding the blank sheets:

Fig. 4 is a right handlelevational view oi' the machine showing the drive for the device;

Fig. 5 is an enlarged cross sectional detail view taken substantially along the lines 5-5 oi. Fig. 1, disclosing thefthroat adjusting mechanism and the stripper roll;

Fig. 6 is an enlarged detail view of the feed ratchet and associated pawls in normal position;

Fig, 'I is an enlarged detail view of the ratchet and associated pawls shown in Fig. 6, but in a position assumed after the lmain drive shaft has been rotated 180;

Fig. 8 is an enlarged exploded isometric view of Fig. 9 is a front elevational detail view, partly in section. disclosing the misfeed mechanism;

and secured thereto. isaeross brace 22.

Fig. 10 is a cross sectional, elevational detail view taken substantially along the lines I0-i0 Fig. 11 is a schematic view showing the position of the blank sheets at 0 stopping position of the main shaft of the machine; l Fig. 12 is a schematic view showing the position of the blank sheets at about rotation of the main shaft.

uponl which is secured a pair of upright frame walls 2i, between the upper portion of which, This brace has Journaled therein 'a vplurality of shafts 2! upon which are pivotally mounted the well known type sectors 2l. The sectors are under control of stops in the well lmown 'stop basket to limit the forward movement thereof and thus control the printing and accounting mechanisms of the machine. The sectors have types mounted thereon which are adapted to be brought into printing relation with a platen 26 and, when in such position, the type is adapted to be struck by a corresponding hammer 21 for the purpose of printing.

The platen 26 is mounted in the well known manner upon a pair of brackets 28, each bracket beingv secured to one end of a cross plate 30. Upon the rear face of the plate 30 and running parallel therewith is secured a pair of guide rails 3| between which is a slide 32 fixed at its ends to brackets 33, secured to frame walls 2|.

As is best seen in Figs. 1 and 2, secured to the upper surface of brace 22 is a cross plate 35, which serves as a base or support for a pair of side plates 36 and 31 fixed upon the plate by screws 38. Secured between the plates 36 and 31 by screws 40 is a rectangular bar 4| having a pair of cutout portions 42 (Fig. 5), adapted to receive an adjustable .throat knife 43, the upper surface ofwhich is adapted to support a stack of blanks 44 in edgewise position.

The stack of blanks 44 is supported near its upper portion by a cross bar 45 (Fig. 2) secured between the frame plates 36 and 31. Adjustably secured to the shaft 45 is a pair of forwardly extending arms 46 which serve to guide the stack laterally. The arms 46 are supported at their forward ends by a cross shaft 49, journaled in the plates 36 and31.

, Journaled near its right-hand end in the plate 31 ,is a shaft 41 (Fig. 4) which extends toward the left, passes through an opening 48 (Fig. 2) in the left hand plate 36, and is iournaled near its left hand end in a bracket 50 (Fig. 3) secured to the left hand frame Wall 2| by screws 39.

Mounted upon the shaft 41 is a stripper'l roll 6| (Figs. 1, 2, and 5) having a locating pin 52 secured tothe left hand portion thereof which pin is adapted to be received in a notch 53 formed in a clamp 64 adjustably secured to the shaft 41. Fixed to the shaft 41 and located to the right of the stripper roll 5| is another clamp 55 (Fig. 1) which clamp serves to prevent lateral displacementof the stripper roll. seen in Figs. 1 and 5 the roll 5| is formed with three elongated grooves 56 into each of which is removably secured a clamp.51 by means of screws clamp v so that the stripper roll may be free of the clamp 54 and thus free access may be had to the rubber strip without changing the setting which is maintained by the clamp 54.

In order to insure that only one blank is fed from the stack by the rubber strip 6|), each throat 43 is provided with a notch 62 (Fig. 5) adapted to receive the head portion of an adjustment screw 63, the shank of which is threaded into the forward wall of the bar 4|. This construetion is such -that by turning the screw one way or another a guiding edge 69 of the knife 43 may be brought into proper spaced relation with the periphery of the stripper roll 5| in accordance with the thickness of the blank'that is to be fed. Once the proper adjustment between the knife and the roll is made the knife may be secured to the bar 4| by means of set screws 64 which pass through shouldered elongated slots formed in the knife.

In order to insure that the first blank of the I stack is not resting upon the upper edge of the throat knife 43 and thereby cause jamming, when said blank is fed, as will hereinafter appear, the following mechanism is provided:

Referring to Figs- 1 and 2, each frame plate 36 and 31 is provided with'studs 66vwhich pass through slots 61 in a slide 68. Each slide has a pin 10 fixed thereto, which cooperate with a fork 1| in an arm 12 secured to the cross shaftl 49. The arms 12 are urged in a counter-clockwise direction (Fig. 2) by springs 13, one end of each of which is connected to pins 14 fixed to the plates and the other end connected to pins 15 on the arms. The rear end of the slides 66 is bent to form lugs 16 upon which are secured the ends of a pressure plate 18. The pressure plate has a portion 88 of its lower edge bent slightly rearward so that when the plate is held against the stack of blanks by the action of the springs 13, the portion 88 of the plate will bear against the lower portion of the stack, thereby giving the bottoms of blanks a slight curl thus insuring that the blank which is` the next one to `As is best 63. Each clamp 51 has fixed therein a rubber t 'strip 6|! 'its outer or exposed face being corrugated as indicated at 6|.

The corrugated portion 6| of the rubber strips 68 is adapted, when the stripper roll 5| is rotated by means which will later be described under the heading of Drive mechanism. to strip the first blank from ,the stack 44 and feed said blank in a downward direction (Fig. 5). It will be noted, however, that the stripper roll is adiustably mounted upon the shaft 41 in such a manner that the rubber strip may be positioned to feed the blank at any desired time in a machine cycle. The method of positioning the stripper roll. as abovedescribed, is as follows: The clamp 64 is first secured to the shaft 41' so that its notch 53 lies in the desired position. The stripper roll is then mounted upon the shaft 41 in such a way that the pin 52 mounted thereon enters the notch, thereby positioning the roll. 'Ihe roll is then kept from lateral displacement by the clamp 55. It will thus be seen that, when the worn rubber strip 66 is to be replaced by a new one, it will only be necessary to loosen the be fed does not contact the upper edge of the throat 43.

In order that the pressure plate 18 may be held away from the stack during the insertion or removal of the stack the following latching mechanism is provided. The left-hand' end of the shaft 49 extends beyond-the frame and has secured thereon an arm 8| provided with a handle 82. Secured near the right-hand end of the shaft is an arm 83 (Fig. 4) havingiixed upon its extremity thereof a pin 84 adapted to cooperate with a notch 85 formed in a latch lever 86 which is pivoted upon a stud 81 secured to the right-hand frame 31. The arm 66 has a tail portion 88 formed thereon which is adapted to cooperate with a pin 90 secured to the plate 31,

so as to limit the counter-clockwise movement 1 Y of the lever 86.

Normally the pressure plate 18 and its associated mechanism is in the position shown in Figs. 2 and 4, in which position the card stack may be inserted or removedl from itsv feeding position. When the stack vhas been inserted or placed upon the throat knife 43, as shown by the dot-and-dash lines in Fig. 2, the lever 86 (Fig. 4) is rocked in a counter-clockwise direction, thereby permitting the arm '83 to rock in a counter-clockwise direction, through the action of springs 14, and thus move the pressure plate dlillle.

ment ci blanks in the stack, the arm through handle 02, is rocked in a clockwise direction (Fig. 2) moving the pressure plate away from the stack until the pin 00 on the arm Il is engaged by the notch 05 on the latch l0.

Drive mechanism The operating mechanism in the present in vention comprises the well known continuously rotating transverse shaft 02 (Fig. 3) journaied between brackets 93 (one shown) and which maires one revolution i'or each cycle of the :ma-

lecured to the left-hand end of the shalt 0d is a circular disc 00 uponwhichis pivot--v ally mounted, at 05, a pair of upwardly extending links dt and 91. The upper end of the link 00 is piro-tally connected by a stud 90 to an arm itil which arm is loosely mounted upon a stud shalt itl ilxed to the bracket |50'.V The upper end ol the link 91-is pivotally connected by a stud lill (Figs. 0, 7, and 0) to an arm |00 pivoted upon the stud shalt lili. Also connected by stud d0 to the link 00 is a pawl |05 having a nose |00 adapted to engage a pair of diametrically opposed notches |01A and |01B formed in a disc itl.. relation with the notches in the disc i01. by a serine |00, one end of which is connected to apin llt on the arm |00 and the other end connected to a pin on the pawl |05. Connected by stud |03 to the link 91 is a pawl ||2 having a nose ||3 adapted to engage a pair of dianietlically opposed notches IHA and ||0B link 01 causes the upper pivot |03 through the arm |00 to move in an arcuate path about the shaft |0| in a clockwise direction, thereby moving its associated pawl ||2 about the periphery of the disc H0 until the shalt 02 has rotated about 165 at which time the pivot has reached its bottom dead center relative to the shalt 92 and pivot |03. It will be seen that the travel of the pawl ill is oi such an extent that-the nose ||0 thereof enters the notch Ylith oi disc lill and continues in a clockwise direction until but a slight clearance between it and the shoul- The pawl |05 is urged into cooperative formed in a disc H0. The pawl |12 is urged spacer llt. Upon the flange |2| of the hub is secured a gear |20. Rivets |22 are-provided der of the notch lith is reached. Further rotation of the shaft t2 (from 105 to 130, at which time the printing occurs) rotates the pivot |050 in a counter-clockwise direction to the position shown in Fig. l diminishing the clearance between the nose lit and the shoulder of the notch illB. Continued rotation ol the shalt 92 (from. 180) brings the pawl lit into contact with the shoulder ol the notch llllB,v at about 185, from which point the discs itl and lit are rotated another 00 hack to normal position as shown in Fig. 0.- Tlie total amount ci rotation oi the gear |20 is, therefore, 100 ior each complete revolution oi the shaft 02.

Shortly before the completion of the last haii cycle of shaft 02 (about 345) the pivot 05 reaches its top dead .center relative to the shait 02 and the pivot |03, at which time the rotation oi.' the discs H0 and i01 is interrupted. Further rotation of the shalt 02 (from 345 to 360) moves the nose of the pawl M2 clockwise .from the shoulder of the notch NLA to the position shown in Fig. 6.

The simultaneous clockwise movement'of `the pivot 00 movesvthe nose of the paw] |05 about the periphery of the disc |01. until the shaft 02 has been rotated about 355 at which time the piyot 05 has reached its top dead center relative to the pivot 00 and'shai't 92. This movement oi' the pivot 00 moves the nose o1' the pawl |05 into the notch |01A but slightly spaced away to secure the discs |01 and ||4, the spacer H0.` l

and the gear |20 tuo the flange |2| of hub ill to form c. unitary assembly which is rotatably mounted upon the shaft |0|. The discs |01 and llli are secured together, as described above, with the notches thereof positioned in the following manner. Beginning with notch |01A (Fig. (i) and moving in a clockwise direction, the notches |01A. liliA, |0113, and |IOB are spaced 90 apart.

Referring to Figs. 3, 6, and 7, the above construction is such that, when the drive shaft 02 starts to rotate from normal position, the disc therefrom. Further rotation of the shaft 02 (from 355 to 360) moves the pivot 00 counterclockwise and consequently diminishes theclearance between the nose |05 of pawl |05 and the shoulder of the notch |01A to the position shown in Fig. 0.

The platen 20 is driven in a counter-clockwise is mounted.

to rotate the dises |01 and H0 until the shaft4 h 92 has rotated about 110 at which time `the pivot 05 is at its bottom dead center relative'to the pivot 00 and shaft 02. By this movement the discs |01 and lilhave been rotated about 00. Continued rotation of the shaft'02 (from 110 to 180 at which time printing occurs) raises the pivot 08 to the position shownin Fig. '1,- without effecting any rotation o! shaft |0 .This

period insures that the platen will be stationary4 during printing.

The simultaneous downward movement of the The gear |20 meshes with another gear |21 which is ilxed to the transverse shaft 01 journaled near its left-hand end on the upper portion of the bracket 50. The shaft 0.1 passes through the opening 00 in the left-hand frame plate 36 and is journaled near its right-hand end lin the right-hand frame plate 31, as above described. Secured to the right-hand end of the shaft I1 is a gear `|20 (Fig. 4) which meshes with a gear |30 xed to the right-hand end of a cross shaft 13|. The shaft |3| is supported near its right-hand end by a depending arm |02 rotatably mounted upon a stud |33, which is rotatably mounted a depending arm |31, the lower end of which is adaptedto support the left-hand end of the shaft |6|.

Pivoted upon a stud |36 (Fig. 4) secured to the right-hand plate 31, is a depending arm |40, the lower portion of which is adapted to support a shaft |4| Ahaving secured thereon a The gear |42 is urged into coopera 'the left of the machine, passes through the respective openings |41 and |46 of frames 31 and 36, and lis journaled at its left-hand end in a depending arm |50 pivoted upon a stud Y |51 fixed to the frame plate as. The arm isc is urged in a clockwise direction (Fig. 3) by a spring |52 having one end connected to a pin .|53 fixed to the left-hand plate 36 and the other encl connected to a pin |54 fixed to the arm |50. Meshing with the idler gear I 46'(Fig. 4) is anothergear |55 secured to a shaft |56 journaled in a forwardly extending arm |51 also pivotally mounted upon the stud |36. Formed integral with thergear |55l is a larger gear |56.

The arm |51 is urged in .a-clockwise directiony (Fig. 4) by a spring |60 having one end connected to a pin |6| fixed -to the frame plate 3l' and the other end connected to a pin |62 fixed to the arm |51 so that the gear |58 is held in mesh with another gear |63. Theshaft |56 extends toward the left of the machine and passes through respective circular openings |64 and |65 in plates 31 and 36 and is journaled at its left-hand end in a forwardly extending` arm |66 pivotally mounted upon the stud |5|. The arm |66 is urged in a counter-clockwise direction (Fig. `3) by a spring |61-having one end connected to a pin |66 xecl to the plate 36 and the other end connected to a.

lpin fixed to the arm |68.

The gear |63 is fixed to the right-hand end of a shaft |1| journaled inthe plates 36 and 31.

It will be seen from the above that the gears |28, |42 and |56 (Fig. 4) rotate in a counterclockwise direction, while the gears |30, |46, and |63 rotate in a clockwise direction.

Form feeding Referring to Fig. 11 a blank is shown schematically, in three different positions, A, B,

and C. In the A position the blank is shown in the position assumed before it is stripped from the stack by the stripper roll 5|. In the B position the blank is shown in the position it assumes after the machine has completed one complete cycle. In. the C position the blank is shown in the position assumed after the machine has completed la succeeding cycle.

beginning of the counter-clockwise rotation of the shaft 62 (at about 20), the shaft 41 (Fig. 3) starts to rotate in a clockwise direction. This will rotate the stripper roll 5| in a counterclockwise direction (Figs. 2, 1l, and 12) so that the corrugated portion 6| of the rubber strip 60 (Fig. 5) contacts the lower face of the first blank of the stack and moves said blank in a downward direction. This downward movement is continued until the lower portion of the blank is gripped between the stripper roll 5| and a pressure feed roll |12 secured to the shaft |3|. The rolls 5| and |12 continue feeding the blank downwardly until the shaft 62 has rotated about 170, at which time the rolls 5| and |12 are idle as hereinbefore described. The blank just being fed is now in the position D shown schematically in Fig. 12. Secured to and between the frame plates 36 and 31 by screws |13 (Fig. 4) is a cross bar |14 (Fig. 2) to which is secured a U-shaped deector |15 having a front and rear wall |16 and 11, respectively. Adjustably secured to the cross plate at |18 is a deilector bracket |80'having secured vat the front portion Shortly after the shaft 92 has continued its rotation from 180 (at about 185) the rolls 5| and |12 start to feed the blank downwardly from the D position (Fig. 12), said blank being guided in such movement by the deflectors |11 and |8|. Continued rotation of the' shaft 92 causes the rolls 5| and |12 to feed'the blank to a position wherein the blank is picked up by the platen 26 and the usual platen feed pressure rolls |82 and fed by them tothe B position (Fig. 11). Soon after the start of a succeeding cycle of the shaft 92 the blank is fed by the platen 26 and rolls |82 until just prior to 180 (about 170) rotation Referring. now to Fig.`12 the blank is shown in The blanks assume the above positions A, B, C, D,

E, and F in the followingmanner.

Aswas previously describedyshortly afterthe of the shaft 92, at which time the blank is fed to the E position, Where it is held momentarily due to the lost motion between the pawls |05 and |2 and notches in discs |01 and ||4. During this momentary halt in, the feeding a printing operation is effected. Continued rotation of the shaft 32 from its 180 position will cause the blank to be further fed into a'position, whereby it is gripped by the roll |12, and a plurality of eject rolls |63 secured to the shaft |4|, the blank being deflected into such gripping position bythe deflector |16. The blank at the end of this second cycle of the machine is in the position C (Fig. 11).

Secured to the underside of the rectangular bar 4|- (Fig. 2) is another defiector plate |84 which serves to deflect the outgoing blank so that the edge thereof will be gripped between a plurality of pressure rolls |65, fixed to the shaft |56 and a plurality of stationary rolls |86 fixed to the shaft |1|. The blank is in the F (Fig. l2) position when the shaft 62 has rotated about of the third cycle. The rolls |65 and |86 eject the blank upon a receiver consisting of a pair of brackets |61 (Fig. 2) secured by screws |06 to a front frame wall |00 fixed to the base plate 20 of. the head of the machine The brackets |61 have secured thereon a pair of U-shaped strips |6| running transversely of the machine and another pair of U-shaped strips |92 running at right angles to the strips |6|.

Msfeed mechanism The throat knife is adjustable so as to position the rear edge -63 thereof in a minimum spaced relation with the periphery f the stripper roll 6| to insure that only one lglank may be .jamming wouldoccur, causing damage to the Also continued rotation of the roll mace. will cause damage toother blanks as the rubber strip engages the stack once for each cycle of the machine.

Moreover, ii' the number of punched cards to be sensed is more than the number of blanks in the staelr, it will be seen that if no means were provided ior stopping the machine. the remaininu number oi punched cards will be sensed and the data sensed therein will not be printed in a blunt: which will result in disarranging the punched cards.

Jliccordingly, the following mechanism is provided to stop the machine from operatinu when a card is jammed at the throat, `or after the last blank has been led from the printing line..

the rubber strip 60 begins to feed one b i i Pivoted upon the stud |36 (Figs. 3, 9, and lo) and adjacent the arm |31 is a depending arno iSi (Fles. 9 and 10) upon which is rotatably mounted a iollower roll |06 adapted to cooperate with a cam itl secured tothe shaft 41. The arm. |88

is urged in a eounterclockwise direction (Fig. 10) by a spring i536 having one end thereof connected to a pin 200 secured to the plate 36 and the other end connected to a pin 20| Ifined to the arm |95. Fixed to the lower portion of the arm itt is one end of a stub shaft 202, the other end oi said shaft `having secured -thereto a de'- pendinu blade 203,'the lower portion of which is adapted to enter a rectangular lopening 204 formed in a guide plate 205 nxed to the cross plate 80. The arm |95 is provided with a cir--V cular openingr 206 through which passes a pin 201 secured tothe plate 36 for limiting the rocking movement of said arm. gral with the armk |95 and bent leitwardly (Fig. 9) cooperates with one end of an interponent 2id enclosed within a Bowden wire casing 2li having one end secured to a fitting 2|2 ilxed to a lue 2H of a bracket 2|4, which bracket is secured to the plate 36 at 2|5. The other end of the casing 2|| terminates in antting 2|6 secured to the'lower end of a bracket 2|1 which bracket is fixed at 218 to the left-hand intermediate frame 220. The frame 220 is the same as that shown in Fig. 1 of, and described in, the U. S. Patent 2,044,119 to W. WJLasker, issued June 16, 1936 and is designated therein by the patent, it will -be seen that, when the arm 68 is rocked in a clockwise direction, the interponent 6d carried thereby will be interposed between the I upper end of the link 5'1 and the lever 61 so that:

toward the end ofa tabulating cycle the clutch will become disengaged, thereby stopping the' machine. Y 4

Referring now to Fig. 10 of the present drawings, it will be noted thatv this view is looking from the inside o i the machine. Accordingly, in

a spring (not shown). Referring again to Flc. 10, the parts shown therein are positioned as they would appear after the .last blank has been ejected or just before feeding the ilrst blank of a stack.

Assume now that a stack of blanks isl in position to be :ted to the printing lline one lat a time. Shortly after the malnshaft 82 starts to rotate la; between the rolls 6i and i12, as hereinbefore described. Eihortly thereafter, ibut before the lower edge oi the blank has contacted the blade 203 the high portion oi the com tell 'engages the roller |00 on the arm leb and rocks said arm and roller in e. clockwise directioniFia. 10) thus moving the blade 200V out of engagement with the ope 204 and consequently out of the path of the blank. Y v

Further movement oi the main Il f the blank to be moved downwardly until lust beas is best seen in Fig. 12. The rotation of the shaft |0| being resumed, the b is moved to a position shown in Fig. `11 and designated 2B, wherein the lower portion oi the card has been fed between the rolls |82 and the platen 2B, this occurring near the end oi the lili-stv cycle oi the shaft 02. Just prior to this, at about 270, the

roller |96 began to ride on the low portion of the cam |81, thereby moving the blade 202 into con- A lug 208 formed inteof the cycle.

1 tact with the blank being fed as seen in Fig.. 11-

It will be seen that, while the blade 203 contacts the blank. the lug 208 on the arm |05 does not move the interponeut 2liV to cause the machine to stop. During the followingl cycle (second) oi the machine. the first blank is brought to printing position at about' 170 rotation of the shaft 92 and at the-same time another blank is fed by the rolls 6| land |12: Further ,rotation of the shaft 02 will cause the first blank to be fed intov the eject rolls |85 and |86 and the second blank to be sensed by the blade 208. Accordinglyfas l long as the blade 203 senses the presence of a blank the machine will operate as described. However, shortly after the last blank of a stack has been printed, the blade upon sensing the absence of a blank card enters the openings 204. causing the lug on the arm 200 to engaie the interponent 2|0 and rock the arms 222 and 220 in a counter-clockwise direction (Fig. 10), thereby conditioning the machine to stop at the end Obviously, should theblank b'e jammed and not fed to position B, as described above, the machine `would be conditioned to stop at the end of the cycle in which jamming` occurred.

While I have described what I consider to be a. highly desirable embodiment of my invention.

it is obvious vthat many changes inform could be made without departing from the spirit oi my in ventlon, and I, therefore, do not limit myself to the exact form herein shown and described, nor

to anything less than the whole of my'invention as hereinbefore set forth, and as hereinafter claimed.

order to 'stop the machine, in the, present invention, as viewed in Fig. 10, the arm' 224 (68 of the above mentioned patent) is rocked in a counterfclockwise direction against the tension of desire secure by roll having a plurality of removable rubber strips mounted thereon, said strips having a corrugated exterior adapted to -contact a portion of one of said forms, a shaft, upon which said stripper roll is mounted, a driving element adjustably secured to said shaft, and a coupling device for connecting -said stripper roll with said driving element whereby the rubber strips are properly positioned relative to said form.

2.l In a machine of thetclass described, means including a stripper roll for feeding single forms from a stack, a plurality of resilient strips mounted upon said stripper roll for stripping forms seriatim from said stack, ashaft, and means for adjustably mounting said stripper roll on said shaft for positioning said resilient strips relative to said form, said last mentioned means including a clamp adjustably mounted upon said shaft and having a notch formed therein adapted to receive a pin mounted upon said stripper roll.

3. In a machine of the class described, the combination of a stripper roll for stripping single forms from a stack, means for supporting said stack edgewise, said supporting means being spaced away from the periphery of said stripper roll to forma recess between said supporting means and said stripper roll, resilient means when effective for holding said stack against the periphery of said stripper roll, means formed on said resilient means for offsetting the lower portion ofsaid stack so as to position'the lower edge of the'foremost form in said stack in register with said recess, and means for latching said resilient, means to ineffective. position for permitting insertion and removal of said stack from said supporting means.

4. In a machine of the class described, the combination of a stripper roll for stripping single forms from a stack, adjustable means for supporting said stack edgewise, said adjustable means being' in close proximity to said stripper roll, resilient means including a plate for holding said stack against the periphery of said stripper roll, means formed on said plate for positioning the lower portion of the foremost form of said stack in register with the space between said adjustable means and said stripper roll, and manually operable means for holding said resilient means away from said stack.

5. In a machine of the class described, the

n combination of a stripper roll for stripping single d forms from a stack, a main operating shaft, means operable by said main shaft for rotating said stripper roll 180 during less than 180 rotation of said main shaft, and additional means operable by said main shaft for rotating said stripper roll another 180 during less than 180 additional rotation of said main shaft.

6.^In a machine of the class described, the combination of a main operating mechanism, a stripper roll adapted to strip single forms from a stack, means for feeding a stripped form to a printing position, and a device operable by said main operating mechanism for operating said stripper roll and said feeding means, said device being so constructed that the operation of the stripper roll and the feeding means is interrupted while said stripped l:Tbrm is in said printing position and resumed after printing .on said form is accomplished.

7. In a machine of the class described, the combination of a stripper roll for stripping single forms from a stack; a main operating mechaating mechanism; a shaft; means, including a pair of notched discs mounted upon said shaft, through` which said stripper roll isv operated; an arm-for each of the links also mounted upon said shaft; and a pawl connected to each link and arm and operable thereby, said pawls being adapted to cooperate with the notches on said discs in such a manner as to cause the same to be rotated 90 during less than 180 rotation of said main operating mechanism, and an ladditional 90 during less than an additional 180 rotation of said main operating mechanism.

8. In a machine of the class described, the combination with a printing mechanism; of a stripper roll for stripping single forms from a stack; a main operating mechanismrmeans operable by said main operating mechanism for rotating said stripper roll 180 during less than 180 rotation of said main operating mechanism; additional means operable by said main operating mechanism `for rotating said stripper roll another 180 during less than 180 rotation of 'said main operating mechanism; and means operable by.

said first mentioned means for feeding said stripped form to printing position, said first and second mentioned means beingv so constructed that after said stripper roll has completed its first 180' rotation the main loperating mechanism moves a certain distance before rotating said stripper roll the additional 180 thus interrupting the operation of said stripper roll and said feeding means for a certainv period during which printing occurs.

nism; a pair of links operable by said main oper- 9. In a machine of the class described, the combination of a stripper -roll for stripping single forms from a, stack; a main operating mechanism; a shaft; a gear, mounted upon said shaft, through which the stripper roll is operated; a device including a link connected to said main` operating mechanism, an arm mounted upon said shaft and connected to said link, ,a pawl connected to said arm and said link and operable thereby, a disc mountedl upon said shaft fixed to said gear, and notches in said disc cooperable 4 with said pawl to cause said disc and said gear to be rotated during less than 180 rotation of said main operating mechanism; and an additional device including a link connected to said main operating mechanism, an arm mounted upon said shaft and connected to said link, a pawl connected to said link and arm and operable thereby. a disc mounted upon said shaft and fixed to said gear, and notches in said disc cooperable with said pawl to cause said disc and said gear to be rotated an additional 90 during less than additional rotation of said main operating mechanism.

` 10. In a machine of the class described, the combination of a stripper roll for stripping single forms from a stack, a main operating mechanism,

means operable by said main operating mechanism for rotating said stripper roll 180 during less than 180 rotation of said main operating mechanism, additional means operable by said main operating mechanism for, rotating said stripper roll another 180 during less than 180.of said main operating mechanism, said rst and second mentioned means being so constructed that the main operating mechanism moves a certain distance before commencing to rotate the stripper roll the rst 180 and before commencing to rotate same the additional 180.

KARL JOHN BRAUN.

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