US2371190A - Sheet handling apparatus - Google Patents

Description

March 13, 1945. A. A. SAUL SHEET HANDLING APPARATUS Filed April 5, 1941 4 Sheets-Sheet 1 M m 2 mw we 4 v March 13, '1945. A, A L v 2,371,190

SHEET HANDLING APPARATUS Filed April 3, 1941 4 Sheets-Sheet 2 I I B 176 177 180' fig. 2.

INVENTOR i wq March 13, 1945 A. -A. SAUL 2,371,190

SHEET HANDL I NG APPARATUS INVENTOR a th.

' March 13, 1945. A. A. SAUL 2,371,190

SHEET HANDLING APPARATUS Filed April 5, 1941 4 Sheets-Sheet 4 V INVENTOR 4 Patented Mar. 13, 1945 SHEET HANDLING APPARATUS August A. Saul, Pittsburgh, Pa., assignor to Miller Printing Machinery 00., Pittsburgh, Pa., a corporation of Pennsylvania Application April 3 1941, Serial No. 386,652

13 Claims.

This invention relates to sheet handling apparatus and more particularly to sheet handling apparatus for use with a press or the like to handle sheets relatively thereto. While in its broadest aspects the invention is applicable to sheet handling apparatus generally it is in certain respects especially applicable to sheet delivery apparatus for delivering sheets from a press or the like.

The invention will be described as embodied in a sheet delivery apparatus for delivering sheets successively from a printing press wherein the sheets are printed. The invention in the structure selected for the illustration is concerned primarily with the means for changing the elevation of the pilesupport and the means for operating and adjusting the Joggers. In a sheet [delivery apparatus the pile support is gradually lowered as sheets are delivered thereto and the sheets at the top of the pile are periodically jogged, this ordinarily being done at each cycle-that is to say, upon the delivery of each sheet to the pile. The amplitude of the jogging movement is controlled depending upon the type of stock used and the size of the sheets.

I have devised sheet handling apparatus which incorporates a number of improvements facilitating operation of the apparatus and simplifying its structure. I provide relatively simple though desirably effective meansfor changing the elevation of the pile support. In a sheet delivery apparatus the pile support is, as above stated, gradually lowered during the delivery of sheets to the pile and when a pile of sheets is removed the pile support is rapidly raised to its upper position so that a new pile can be gradually built up thereon. In my copending application, Serial No. 537,222, which is a, divisionof this application, sheet handling apparatus having improved means for changing the elevation" of the pile support is claimed. I also provide improved jogger operating mechanism ,and im-,

proved and simplified means for co-ntrolling the amplitude of oscillation of the joggers. I provide for controlling at will the amplitude of os- .ci1lation of the .joggersby means positioned at the outside of the delivery frame. preferably includes a rapidly member and means for maintaining the same in desired adjusted positions. The joggers areresiliently urged both inwardly and outwardly so that if they encounter any obstacle theywill yield rather than becoming damaged or broken.

Other details, objects and advantages of the Such means shiftable control.

purpose of explanation and invention will become apparent as the following description ofa present preferred embodiment thereof proceeds. Y

In the accompanyingdrawings I have shown a present preferred embodiment of the invention, in which Figure 1 is a side elevational view of sheet delivery apparatus with a portion broken away,

Figure 2 is a top plan view to enlarged scale and with portions omitted and portions broken away of part of the apparatus shown in Figure 1,

Figure 3 is a fragmentary plan view of a portion of the apparatus shown in the lower right hand corner of Figure, 2, part being shown in horizontal cross section,

Figure 4 is a vertical transverse cross-sectional view taken on the line IV-IV of Figure 3,

Figure 5 is a detail longitudinal cross-sectional view taken on the line V--V of Figure 4, c

Figure 6 is a fragmentary plan view of a portion of the apparatus shown at the right hand portion of Figure 2, parts being broken away, and

Figure 7 is an elevational view of the apparatus shown in Figure 6.

Referring now more particularly to the drawings, there is shown a sheet delivery apparatus adapted to deliver sheets from a printing press. The printing couple of the press is not shown but-a'portion of the press frame is indicated at 2, such frame having an extension 6 projecting to the left viewing Figure 1 and upon which the delivery apparatus, designated generally by reference numeral 3, is adapted to be guided in movements toward and from the press. The press structure is not shown in detail since the present invention does not relate particularly thereto. The press may print upon sheets passed therethrough or it may be equipped with cutting and crossing blades or other instrumentalities for acting on the sheets.

The delivery apparatus, which will be hereinafter referred to simply as a delivery, comprises opposed side frame members 4 and cross frame members 5 connected together to support and contain the delivery mechanism. The delivery is separate from the press and is adapted to be moved. in a straight line toward and away from the press into and outof cooperative relationship with respect thereto. This provides a working space between the press and delivery; The

delivery and press are relatively movable and while in the structure shown the press is stationarily mounted and the delivery moves over the floor the reverse might be the case or the press and delivery might both move.

The extension 6 above mentioned lies along the floor and the delivery is suitably supported and guided thereon to move toward and from the press. The delivery has bearings H and I2, respectively, wherein are rotatively journaled shafts l3 and M, respectively. The shaft I3 is connected through a universal joint I5 with a screw it extending toward the press, and the shaft I4 is connected through; a: universal. joint. H with: screw l8 extending toward the press. Fixed'to the shafts l3 and M are sprockets l9 and 20, respectively. Journaled in the delivery are stub:

shafts 2| and 22 carrying idler sprockets23 and 24, respectively. Mounted in the delivery is an electric motor 25 whose shaft; 26. carriesraa bevel.

pinion 21. The bevel pinionzrZ'k meshes with e; bevel gear 28 fixed to a driving shaft 29 journaled for rotation in the delivery and tmwhich. is. also are of the same size, so when the motor is operated: both of'the screws l6 and 18 will turn in the same direction at the same speed andwill cooperatev in'exactly similar manner'with' the re.- spective nuts 33. and through which they pass;

Since the nuts 33 and 34" are fixedly positioned in the press base, driving'iof. the screws by1the' motor 25 will1inevitabl'y1result'ih movement of the delivery toward; or fromzthe press depending upon the direction iniwhich the motor'armature turns. Preferably the motor'is a. reversing motor so thatit'may be driven'in either direction. Consequently when it is desired' to move" the" delivery toward the: press the. motor is: driven in one: di-

rection and when it is desired to: movethe delivery. away from thepressthe motoris driven in the opposite direction.

Pivoted. to. the body of thedelivery 3 by a cross shaft: 35' is'a frame 36. carrying-one end of each of a. plurality'of endless conveyors 60 and 6 2; The frame 36 is" adapted. to be" swung about" the pivot 35. from. its; generally horizontal operative position as; shown in Figure 1" tea position in which the right-hand extremity of the frame'is raised: Means are provided. as will presently be described, for thus swinging-the frame3$ automatif.

cally' upon movement of the? delivery away from the press andforswinging the frame back downwardly into operative position upon movement-of the delivery toward the press; When the frame isin operative position the conveyors Elf-and 62 are driven. from the press withthe upperreach of the conveyor 62- and the-lower reach of the conveyor moving'toward the left viewing Figure 1" to deliver-sheets fromthe press; The sheets normally rest upon the-"belts Gland are conveyed away'from the press thereby, the belts'BB serving to insure that the sheets do not fly upduring movement. The structure of the conveyors and the means: for operating them" form no part of the present invention; Suchstructure'and means areshownin my Patent No. 2,309g6'71" and my copending application" Se'ria-lNo. 394,319;

As above explained; the frame 36 is" pivoted to the delivery by the'shaft35, the frame being fixed to the shaft 35 which i's-free to turn in its bearings in the delivery. Also fixed to the shaft 35 and extending toward the left therefrom viewing Figure 1 is an arm 65. Pivoted to the arm 65 at 6B is a link 61 which extends generally downwardly and is at its lower end pivotally connected at 68 to a lever 69 having a fulcrum 10 in the delivery and the opposite end of which carries a cam following roller H. The press frame extension 6 carries'an inclined canr 13' the; uppen active surfaceof which extends upwardly and toward the left viewing Figure 1.

In Figure l the delivery is shown in operative position...When it is desired to move the delivery to inoperative position away from the press the :motorfli isienergized" to turn the screws I6 and ra: in a direction which will result in movement of th'e'd'elivery toward the left viewing Figure 1. The. entire: delivery including the frame 36 will move rectilinearly toward the left for a substanti'al distance while the frame remains in fixed position. relatively. to. the. body of. the delivery. Such.movement-will...continue until the. delivery. reaches. tbepositionin whichthe. follower 1 I. engages the. cam..1.31. Furthenmovement. of. the. delivery towardtheleft isaccompanied. by riding. of. the. follower. .11! up. the-inclined. cam. 13 and consequent turning of the lever. 69' about its fulcrum. 10' in. the. clockwise. direction viewing. Fig.- ure 11' This results in pulling the link 61 down.- wardly andthe linkin. turn throughthearm. causes the. frame 361 to pivotinthe. counter-clockwise directionabout the. axis of the. shaft- 35. Thus. as the. delivery moves. towardthe. left. the frame. 36" is. automatically. pivotally. raised inthe. counter-cl'ocl'swise. direction. viewing Figure 1 about the. axis of; the. shaft. 35.. Whenthe. follower, 1| reaches approximately the top of the cam 13'-the frame.36.will'have. reached its extreme upper position and. the delivery. willhavereached its extreme position away fromthe press, atwhich time the. motor 25. will preferably be. stopped by. means presently totbe described.

When. themotor is operated. in the. opposite direction the. delivery ismoved toward the. right. which movement isaccompanied' by riding, of. the follower Tl down the inclined cam. 13 andconsequent swinging, of. the frame 36 generally in. the

clockwise direction. about. the. axis. of. the shaft 35 viewing. Figure 1 to. the. position shown in that figure. Continued movement of the delivery toward the press is unaccompaniedby. any relative movement between the delivery body and the frame 36' and. the. entire. delivery. moves rectilinearly into operative position relatively to the press.

Mounted. in the delivery for. pivotalmovement about a transversely extending pivot. 14 is a lever I51 Pivoted'to the lever. 15' at. its lower end at 1.6 is a. link 11 having'a hook.-shaped.end.18. The. press driving gear isshown diagrammatically in. Figure 1 at 19'. Through. gearing (not shown) itv drives a gear fl3'fixed'to. a shaft. 84. Also. fixed to thezshaft' 84" is; a. crank 85 to. which is pivoted. at. 86a connecting rod 81. The. cppositeend ofthe connecting rod 81 is carried by a reciprocable. crosshead. having a crossheadpin 88. preferably. carrying; an anti-friction roller as. shown.. The.

book '18'is'adapted' to. hook overthe crosshead pin 88; When thepartsare thus engaged operation ofithe' press; which is accompanied by reciprocation of the crosshead pin 88Jis alsoaccompanied. by'oscillation of the lever 15'.

Mounted in the delivery frame is a. shaft. 89. having 'flxed thereto a manually operable control. handle-flflwhich is positioned outside the frame.

Also fixed to the shaft 09 inside the frame is a pinion 9|. Mounted in the delivery frameis a shaft 92 to which is fixed a gear segment 93 meshing with the pinion. 9 I. Thus turning-of the handle 90 causes through the pinion 9| and the segment 93 turning of theshaft 92 through a limited angle.

Fixed to the shaft 92 is an arm 94. Pivoted to the arm 94 at 95 is a link 96 having a elongated slot 91 in its opposite end. A stub shaft 98 is mounted in the delivery and has a bell crank lever 99 turnably mounted thereon. The bell crank lever has a generally downwardly extendingarm I having at its extremity a pin IOI which enters the elongated slot 91 in the link 96. The bell crank lever 99 also has a generally laterally extending arm I02 to which is pivoted at I03 a generally downwardly extending rod I04 which in turn is pivoted to the link 1'! at I05.

When the press and delivery are operating the, crosshead pin 88 lies within the hook I8, as shown in Figure 1. When the delivery is tobe moved away from the press the handle 90 is turned two revolutions in the counter-clockwise direction, viewing Figure 1. This, through the pinion 9I and the segment 93, causes rotation of the shaft 92 through a limited angle in the clockwise direction, viewing Figure 1. Such rotation of the shaft 92 pushes the link 96 toward the right against the pin I III in the arm I00 of the bell crank lever 99 and turns such lever in the counter-clockwise direction about its axis 98. This lifts the rod I04, which raises the link 'I'I about its pivot I6 and disconnects the hook I8 from the crosshead pin 88. In this manner the delivery drive is disconnected from the press so that; the delivery can be press. I i

When the delivery is to be moved back into cooperative relationship with respect to the press the handle 90 is first returned to the position shown in Figure 1. This lowers the link TI to approximately the orientation shown in Figure 1 but as thus lowered the hook I8 is not engaged-fever the crosshead pin 88. Upon movement of the delivery toward the pressthe inclined nose surface I of the link 11 rides up on the crosshead pin 88, thus raising the right-hand end of the link 'I'! about its pivot I0. As the delivery continues movement toward the press the right-hand end of the link 11 is progressively raised until the hook I8 finally drops down over the crosshead pin, 98. This movement of the link I! is permitted by reason of the provision of the elongated slot 91 in the link 96, for when the right-hand end of the link I1 is raised by engagement of themclined nose surface I08 with the crosshead pin 88 this pushes up the rod I04 and turns the bell crank lever 99 to a limited extent in the counterclockwise direction, durin which movement the pin IOI simply slides freely in the slot 91. Also during operation of the mechanism when the moved away from the crosshead pin 88 oscillates back and forth carrying thelink 11 with it such oscillation is accompanied by slight up and down movement of the Mounted in the delivery frame is a stationary fulcrum pin III.- The arm I09 has a lateral projection II2 which underlies the fulcrum pin III.

The arm I09 is normally urged upwardly by a coil spring II3 connected to thearm at I14 and to the delivery frame at I I5. The press has a latch, plate; IIB with which the hook H0 is adapted to cooperate to mechanically latch the delivery to the press during operation.

As the parts are shown in Figure 1 the center of the eccentric I0! is generally to the left of the center of the shaft 92.. As explained above in connection with the delivery. driving mechanism, when the delivery is to be moved away from the press the handle is turned through two revolutions in the counter-clockwise direction viewing Figure 1 and this turning of the handle is accompanied by rotation of the shaft 92 to a limited extent in the clockwise direction. Such clockwise turning of the shaft 92 swings the eccentric upwardly and toward the right viewing Figure 1. But since the fulcrum pin LI I is stationary such swinging Of the eccentric causes the arm I09 to pivot about the fulcrum pin III and the hook or latch H0 moves downwardly and disengages from the latch plate IIS on the press. This severs the mechanical connection between the delivery and press and frees the delivery for movement away from the press.

When the delivery is away from the press and ready to be moved back toward the press the handle 90, eccentric I01 and arm I09 are moved to the position shown in Figure 1. As the delivery approaches the press the inclined forward surface II I of the hook I I0 rides down on the latch plate IIB. For reasons presently to be explained the deliver ordinarily stops a fraction of an inch away from the press so that it does not move quite far enough for the arm I09 to swing back up under the action of the spring II3 to engage the latch IIO over the latch plate IIB as shown in Figure 1. When the parts are thus positioned the handle 90 is turned in the counterclockwise direction somewhat less than twocomplete revolutions. This, as above explained, is accompanied by turning of the shaft 92 and movement of the center of the eccentric I01 generally upwardly and toward the right viewing Figure 1. But the lateral component of such movement moves the arm I09 as a whole to the right sumciently for the latch III) to clear the plate H6 and when this has occurred the spring I I3 pulls up the latch into latching engagement with the plate 6. The handle 99 is then turned back in the clockwise direction to the position shown in Figure 1, which swings the eccentric I01 downwardly and toward th left. This tends to move the arm I09 to the left, but since the opposite end of the arm is firmly hooked or latched to the press the result is that during such clockwise turning of the handle 90 the delivery is by the arm I09 through the eccentric I 01 drawn up firmly and tightly against thepress.

While only a single arm I09 and associated mechanism have been described above I prefer to employ two such arms, one adjacent each side ofthe delivery, the two arms being identical and operating synchronously. This causes the delivery and press to be drawn together firmly adja cent both side frames.

It has been explained above that operation of the motor 25 in one direction or the other causes rotation of the screws I6 and I8 to move the delivery toward or from the press. The motor circuit is controlled by four switches, one for closing the circuit to start the motor in one direction to move the delivery out, a second for opening such circuit to stop outward movement of the delivery,

the delivery adjacent the link 61.

a thirdiforr closing-the? circuitto: start; the motor: imthe' reverse. direction to. =n'rove'thei delivery and a fourth for opening: such circuit: to: stop inward movement of "the delivery The delivery being in the outposition, the handlelallris turned: in the clockwisedirectionto thetp'ositiorn ofFigure 1'. Fixed to the shaft 92is= ap'air ofiiswitch operating arms II 8- and I I 9'. When 1 the handle: 90 is moved as above described the arm =l l8 op=- crates a switch I2'0"which closes the-motoncircui-t' to operate the motor inthe directionto' cause-- the delivery to move inwardly towardthepress; Theswitch' I is mountedon the frame of thedelivery adjacent theshaft 92 and in position to" be operated by the arm H8" upon movementof" the handle 90 as justexplai'ne'dl The delivery continues its inward movementuntil a switch" operating member- I2'I' on the press" operatesa switch I22 on the delivery which-openssaid' motor 0 circuit and stops inward movement of thedeliv-' ery toward the press: The switch I22 and switch" operating member I2'I are sepositioned thatthe" switch I22 is'operatedto'stop the delivery a fraction of anirrch beforeit reachesitsfully'operative position adjacent the press as above ex v plained. Thereafter manipulation of'the' handle 9Uas above expl'aineddraws the delivery up tight. against the press.

When the delivery isvto be. moved out away from the press, the handle 9Il'is turned two revolutions in the counterclockwise directionviewing Figure 1. This causes the switch operating arm close the circuitwhich operates the motor in the direction opposite that in which the delivery is moved" in toward thepress. Consequently the delivery moves outwardly away from the press. This movement, as. above explained, is accompani'ed" by downward movement of the link 61. Such link carries a switch operating arm I 24., which when the delivery has reached. its full outward position. operates a switch I25, carried by Operation of the" switch-J 25 opens the circuit and the delivery stops.

The handle' 90- controls the motor for moving the: delivery, the driving; connection between the delivery and-press-and the-mechanical connectionaor; latch for. holding the delivery in place againstthe press? When the delivery is in, as shown in Figure 1, turning: of. the handle: SIT through two revolutions in the counter-clockwise direction releases the latch IIII, disconnects'thei driving connection I83 and finally initiates :opera- 3 tion ofthe motor; to move; the delivery'out. The handle 90' also initiates operation of. the motor. tos move the delivery in and positions the arm- I09 and the link IT to adapt them to cooperate with the press when the delivery moves in. The delivery automatically: stops a fraction of an in'chshort of 'itsultimate position and again the same handIeSUsimply' by being turned somewhat less-"thantwo-revolutions first in the counter=- clockwise direction from the position shown in Figure 1 and then back in'the' clockwise direc'-' tiomto that same position causes the hook IIO to draw the delivery'firmly up against the press, this operation being accompanied by dropping ofthehook [81 over the. crosshead pinv88 to render the delivery operable from the press drive; Thus a minimum of manual effort is needed to movethe delivery toward and from the: press.

. et' chains I36 andthence'to the carriage'itselfi' Thus during operation of the mechanism; the

This subjectz'mattenris cl'aimeda irrimy:v copendimr application Serial No. 386,651..

Thelever: I51 carries: at its: upper:- end' a. gem segment I'26'which II'IBShGSZ'WithJ a; piniona'l2'l is a gear I29and another: gear: I30; The-.gearr I30 meshes with a pinion I3I fixed to a shaft: L32; Alsofixed to the shaftv I32 is: aipairrof sprockets I33; one adjacent eachside frame; Carried by eachof the side framesoft: the de-.- livery is a stud I 34. Each stu'dqvl34- carriesxinex teriorly of the side frame with whichx'it is'con' nected' a sprocket I35. Each sprocket I35: is in alignment with oneofi thei sprockets: I332. A: sprocket chain I36 ateach side of. the':d'elivery meshes-with one: of: the: sprockets I331 and? the: aligned sprocket I351 Each of the sprocket: chains I36 passes over idler" sprockets 'I 3ll, one? or both of which maybe adjusted for'tensioningthe chain;

Each of the sprocket chains I36 has one or more'special links, the special links intherespective chainsbeing'posltionedopposite each other." Each ofsuch special links hasnconnected' thereto a bracket, the opposed bracketsxbeingconnected? by crossv members to form a carriage 222 os'cillatable in the horizontal direction viewingFigure 1. The structure ofthe carriage-and themeans for supporting and guiding it form no-part-of the present invention and are not shown'and described in detail. The oscillatory movement of the segment I25 is transferred through the gear" I21, the shaft I23; thegear I30} the pinion I31 the shaft I32 and the sprockets I33 tothesprockreciprocable delivery carriage moves" back and forth longitudinally of the delivery and toward and from the press; The carriage-carries sheet handling means including tapes l4-4 cooperatingwith the tapes 60 vand B2 to receive and deliver sheets, but since such means formno part of the'present invention they will not be'describe'd in detail. Suflice it to say that the reciprocable delivery carriage ordinarily receives a sheet'from" the tapes 60 and 62 upon each reciprocation thereof and delivers the same to'the delivery pile.

Meshing with the gear I29 is-a segment I fixed to a sleeve I46. The sleeve I'46-is journaled for angular oscillation upon a shaft I415 The" sleeve I46 passes through the delivery side frame as shown in Figure 3 and carries at its outer end an arm I48. Since the segment I45 and the arm;

I48 ar both fixed to the sleeve I46 they are to all intentsand purposes unitary. The" arm I 48," carries'a pawl I49 projecting laterally therefrom" and engaging a ratchet I50 fixed'to the shaft I4'1'. The pawl is normally resiliently urged into en" gagemen't with the ratchet I5lJ'by a coil spring' I 511 Upon oscillation of" the segment I45"the pawl I 49 advances the ratchet I50 and; conse"-' quently; the shaft I'4'I to which itis'fix'ed; step by step. Means formingno' part of the present'in ventioni are provided foradjusting the are" through which the pawl moves the'ratchet upom eachoscillation of the segment I45.

Fixed to the-shaft I4! is a pinion I52. Such pinion meshes with a gear I53 which, inturn; meshes with a' gear I 541' fixedto a shaft'l55.

\ Also fixed to the shaft I55 is a bevel" gear'I56" meshing with a bevelpinion'; I51 fixed to a shaft I58 carryinga worm I 59 meshing with a worm wheel I60; The worm wheeli IE0: is mounted" loosely for rotation upona shaft: I6I; Integral'f: with the wormwheeh Ififllisa' ratchet/2011.; Fiized' the ratchet 200.

coil spring 204. Also fixed to strain the cables 203 simply to the shaft I6I is an arm ztl carries at .202 a which pivotally pawl 203 engaging the teeth of The pawl 203 is urged into engagement withthe ratchet 200 by a compression to the shaft Mills a pair of drums I62, one adjacent each'side frame.

A pair of cables is adapted to be wound up on and paid out by each of said drums I62.

One of said cables I63 passes over a sheave I64 and thence downwardly to thepile support I65. The other I66 of said cables passes over a pair of sheaves I61 and I68 and thence downwardly to the pile support I65.

The weight of the pile of sheets upon the pile support'I65 causes such support due to gravity I66 so as to tend to turn the shaft I6I in the clockwise direction viewing Figure 5. But since the arm 20I is fixed to the shaft I6I the pawl 203 carried by such arm and engaging the ratchet 200 prevents the shaft I'6I from turning unless the ratchet 200 turns also. Oscillation of the lever and the mechanism above described causes the ratchet 200 to turn periodically in the clockwise direction viewing Figure 5. This allows the shaft I6I to turn with a step-bystep movement in the clockwise directionviewing Figure 5 whereby to lower the pile support. In

other words the ratchet 200 gives way step-bystep before the pawl 203 which is fixed to the shaft I6I through the arm I and this results in gradual lowering of the pile support as sheets are delivery to the pile livery apparatus. I I

The gearing above described for lowering the pilesupport is enclosed within a casing 205 applied to the outside of the side frame Of the delivery. The shaft I8I extends through the casing 205 and has a reduced extremity 206 provided with a pin 201. A handle is adapted to be applied over the reduced extremity 206' and engage with the pin 201 to turn the shaft I6I in the counter-clockwise direction viewing Figure 5,

during operation of the dewhereby manually to raise the pile support I65.

When the pile support is thus raised the pawl passes over the teeth of the'ratchet 200' so that the position of such ratchet and the worm wheel I60 integral therewith is not disturbed.

Fixed to theshaft I28 is a cam in the delivery frame is a shaft I10 on which is loosely mounted for rotation an arm I'II carrying at its extremity a roller I12 adapted to lie against and follow'the cam I 69. The arm I1I is urged down toward the position in which the roller I12 engages the cam I69 by a tension coil spring 208 acting between the arm HI and a pin 209 carried by the delivery frame. Fixed to the shaft I10 at each side of the delivery is a generally upwardly extending arm I13. Fixed to the shaft I10 is an arm 2I0 having a laterally projecting pinI 2I I. The pin 2 is adapted to lie I69. Journalecl against a generally upwardly projecting finger 2I2 integral with the arm "I which, as above stated, is loose on the shaft I10. A compression coil spring 2I3 surrounds a guide rod 2I4 connected with a hub 2 I 5 pivoted to the arm "I and passing through an opening 2I6 near the upper "end of the arm 2 I 0. The spring2 I3 bears between the arm 2I0 and the hub 2 I5, thereby urging the pin 2 into contact with the finger 2I2.

A jogger operating rod I14 is pivoted to each of the arms I13 at 2| 1 and is adapted to be oscillatorily moved thereby in a direction generally longitudinally of the delivery upon oscillation of I the shaft I10. Fixed to. the shaft I10 is a gen I1I is swung in the erally horizontally extending arm I15. Such arm underlies an eccentric turnable cam-like stop ber I16 determinesthe extent to which the-shaft I10 mayturn in the clockwise direction viewing .Figure 7.

Rigidly connected with rods I14 are rear jogger carriers I82 carrying rear loggers I83. Each of the rods I14 is pivoted at I84 to a bell crank lever I85 pivoted to the frame at I86 and having an arm I81 operating a transversely slidable rod I88. rods I88 at opposite sides of the delivery move always in oppositedirections, that is, both of such rods at any given time move inwardly or out-- wardly. Each rod I88 has fixed thereto a bracket 2 I8 carrying a. rearwardly extending rod 2I9 carrying side Joggers I89 and the rear end of which rests upon a transverse member 220 and has a downturned extremity 22I positioned rearwardly of the member 220. The delivery pile I90 is guided at its outer edge by stationary guides I9I and is adapted to be jogged in the usual manner by the rear Joggers I83 and the side Joggers I89.

The cam I69 oscillates continuously during operatioh of the mechanism. When the roller I12 rides up on the high part of the cam I69 the arm counterclockwise direction, viewing Figure 'Land the spring 2I3 moves the arm 2I0, and with it the shaft I10 to which the arm 2I0 is fixed, in the counter-clockwise direction, thus moving the jogger operating rods to the left and moving all of the gem outwardly awayfrom the pile.

and the arm 2| 0 permits further swinging of the arm I1I without an accompanying turning of the shaft I10. When the roller I12 rides down onto the low part of the cam I69 the spring 208 pulls the arm I1I downwardly or in the clockwise direction about the axis of the shaft I10, viewing Figure 1, and thus, through the engagement of the finger 2| 2 against the pin 2| I, turns the shaft I10 in the clockwise direction and pulls the jog- I'his outward movement of the joggers continues as long as the shaft I10 continues to turn. The extent to which such shaft may turn in the clockwise direction is determined by the position of the stop member I 16. Thus the stop member I16, which is controlled by the arm I18, controls the amplitude of oscillation of the Joggers. If it is desired that the amplitude of oscillation of the joggers be less than the maximum amplitude provided for by the design of the cam I69 the control arm I18 is shifted to a position to swing the stop member I16 downwardly. When the shaft I10 turns in the clockwise direction in response to the action of the spring 208 during the time the roller I12 is riding from the high point to the low point of the cam I69, such turn- I19 in the arm I18 which the jogger operating 7 The respective

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