US1774272A - Bed and cylinder printing press - Google Patents

Description

Aug. 26, 1930.

H, HONIGMANN 1,774,272

BED AND CYLINDER PRINTING PRESS Filed Aug. 30. 1926 10 Sheets-Sheet 1 I-NVENTOR. f/azzs flaky/1M2! A TTORN Y5.

g-2 H. HONIGMANN BED AND CYLINDER PRINTING PRESS File d Aug. so. 1926 10 Sheets-Sheet 2 IN'VENTOR. i 21141711 ATTORNEYS Aug. 26, 1930. H. HONIGMANN I BED AND CYLINDER PRINTI IING PRESS l0 Smeets-Sheet I 4 Filed Aug. 30, 1926 I NVEN TOR.

E r M w if w fl m a H M m y.

Aug. 26;]1930; H. HONIGMANN 1,774,272

BED AND CYLINDER PRINTING PRESS Filed Aug. 30. 1926 lOSheets-Sheet 5 oc'oosooo.

v ATTORNEYS Aug. 26, 1930. H. HO NIGMANN 1,774,272

BED AND CYLINDER PRINTING PRESS 7 Filed Aug. 30, 1926 10 Sheets-Sheet 6 ATTORNEYS.

3 ,0MQFQ4 H. HONlGMANN BED AND CYLINDER PRINTING PRESS Filed Aug. :50. 1926 BY9\ l/ M a fig ATTORNE. S,

Aug. 26, 1930." H. HONIGMANN 1,774,272

BED AND CYLINDER PRINTING PRESS BY I V ATTORN 5.

Aug. 26, 19 30. H. HONIGMANN BED AND CYLINDER PRINTING PRESS Filed Aug. 30, 1926 10 Sheets-Sheet 9 1 INVENTOR. flax 5 17011192774101 0 v I i... i

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Aug- 26, 1930. H. HONIGMANN 1,774,272

BED AND CYLINDER PRINTING PRESS Filed Aqg. 50, 1926 10 Sheets-Sheet 10 a 229 INVENTOR;

e ticular, regard to printing presses wherein the.printingcouplecomprises a bed and cyl-;

ndcr, the type form being, carr ed on a re--' Patented Aug. 26, 1930 7 runs HONIGMANN, "or cnnvnmnn, onto rice I ass'renon mo THE CHANDLER & Paton COMPANY, on CLEVELAND, OHIO, A'C'ORBORVA1:VIO1\TV 01 01x10] 3n]; AND CYLINDERPRINTING rRn'ss Application fi led Augnst' 30f192G. Serial Nana 139'.

The present. improvements relating as .indicatedto printing presses have, more-,.par-- ciprocatingbedand the sheet of paper to be .The invention hasas printed. being carried by acylinder so disposed as to press such sheet against the form upon reciprocatorymovement of the latter in onedirection. 11

its object the provision or improved mechanism for reciprocate ing theibed in ajpress of the type referred to whereby: the extent of itsmovement'may be varied and yet the bed always start from the, same position. Another object is to provide a-driving mechanism that will be capable of operation at high speed without undue vibration. Still another object is to provide'simple; and efficient mechanism for controlling the. contact of the sheet carrying cylinderv with the bed as well as simple and eflicient mechanism for securing the sheet. temporarily to the cylinder during the printing operation'and for discharging the sheet therefrom onto the delivering I mechanism. Other featuresof improvement are found in the sheet feeding mechanism proper as.

well as in the mechanism for inking the form on the bed. I V 7 To theaccomplishment of the foregoing and relatedv objects, the invention, then, consists of. the means hereinafter.fullydescribed and particularly pointed out in the. claims.

Theamtexed drawings and the following description set forth in detail certain mechanism embodying the invention, such disclosed means constituting, however, but one of variousmechanicalforms in which the. principle of the inventionwmaylbe used.

Insaid annexed drawings f T Fig. 1 is a side elevation of a bed and cylinder printing press embodying my present improvements; Fig. 2 .is an end elevation thereof as viewed fromthe left/1D F 1g.;1'; Fig.

3 is an elevation-of the opposite side of the machine from that shown in Fig. 1; Fig. 4 is a longitudinal section of the machine;

takenon a vertical plane as indicated by the line ig. 2.; Figs. 5 and 6 are; transverse.

vertical sections, the planes of said sections beingindicatedby the lines 55 and 66 respectively on each of Figs. 1,3 and 4; Fig. Tis a side elevation on a somewhat larger scale of certain operative parts shownon Fig. 1; Figs. 8 and 9 are broken sectional views throughthe cylinder and a portion of plane of both sections being in- Marc detailed-views, on'somewhatlarge r scale than the preceding figures, of the elevator-trip mechanism; F igs. 15 and 16. are

similar views of the vacuum control valve associated with thes-heet feeding mechanism; F1g.17-1s adeta1l view of a PQltlOIlOf an automatic control device for retaining the cylinder in raised position; Fig. 18 is a detail side elevation showing the mechanism for actuating the stripping fingers associated with the delivering conveyor; Fig. 19 is a plan view of the lower end of the feed conveyor showing the sheet registeringdevice and operating means thereof; and Flg. 20 is a detail view ofa device interconnected with the device shown in Fig. 17 for automatically stopping the press. I

The main-frame 1 of the machine will conveniently take the form of ahollow rectangular castingor box like structure as shownin the several main figures ofthe drawings, such frame having 'feet 2 which rest on the floor and'being substantially closed above by a top 3 on which is reciprocably mounted the bed 4 that carries the type form, said bed is slidably supportedon, the top'3, the latter being formed withlongitudinally extending guide- Ways 5:011 which rest complementary guides 6 on the underside of said table. The side Wallsot frame, 1 rise abovethe top 3 whereon presently appear. The cylinder 8 which as hereinbefore indicated constitutes the other member of the printing couple is mounted on a shaft 9, the ends of which are sup ported in journal boxes 10 that are thus mounted on the lateral enclosure 7 just referred to.

The main shaft 12 from which substantially all the operative parts of the machine are driven is j'ournaled in the side walls of the main frame 1 near one end of the latter, i. e., the left end as shown in Fig. 1, this shaft being driven from a motor 13 supported on a cradle 16 in the opposite lower corner of said frame; said cradle is oscillatorily hung as shown in Fig. 1 and may be adjusted to vary the tension on the belt 17 that connects the motor with a pulley 18 on the one end of shaft 12. This pulley is preferably loosely mounted on the shaft but may be frictionally clutch-ed thereto or rather to a disk 19 that is frictionally mounted on said shaft, one form of friction drive suitable for use in this connection being shown and described in my copending application filed July 30, 1926, Serial No. 125,922.

he connection of driving pulley 18 with the friction disk 19 is controlled through themedium of a bell crank 20 and connecting rod 21 (see Fig. 1) from a two-arm rocker 22 on a shaft 23 journaled in suitable bearings on the right hand end of the main frame 1 as viewed in said Fig. at as well as in Fig. 1. Attached to one end of shaft 23 is a hand lever 2 1 that cooperates with a segmental ratchet 25 by means of which the shaft and thus the rocker 22 may be oscillated and held in desired angular position, and as will be readily understood, the driving pulley 18 will'be held in frictional engagement with disk 19 under corresponding pressure or else entirely released from such engagement as may bedesired.

Preferably supported adjacent the face of pulley 19 that is exposed in the opening between the two parts of belt 17 is a brake shoe 26, such shoe being operable through the medium of a link 27 that is connected with the other opposite arm of rocker 22 to the one end of which link 21 is connected as net described above; and the arrangement being such that when the rocker is actuated to disconnect the pulley 18 from friction disk 19, the brake 26 will be simultaneously applied and thus retain shaft 12 against further rotation.

A rotary type air pump 30 is also housed in the lower portion of the main frame 1 adjacent the motor 15, by which it is driven through the medium of a supporting chain 31. The intake of said pump 30 is connected to a pipe 32 that constitutes in effect a manifold wherewith the several suction devices that form parts of the sheet feedmg and delivering mechanisms respectively may be connected as will be later described.

Mounted on shaft 12 adjacent the opposite end thereof to the one on which pulley 18 is mounted is a pinion 35 that meshes with a gear 36 fixedly mounted on a second shaft 37 parallel with said main shaft and located directly therebelow. It is from this second shaft rather than from the main shaft that the movement of the printing couple as well as the several subordinate parts of the press mechanism are derived. It should however be noted that the tapes that constitute a part of the sheet feed mechanism as well as those that similarly constitute a part of the sheet delivering mechanism are driven by means of belts 3S and 39 respectively from corresponding pulleys 10 and 11 directly mounted on said main shaft 12. It will also be noted that on the projecting end of shaft 12 opposite to the pulley 18, there is mounted a hand wheel 42 which serves both as a fly wheel when the machine is in operation and as a means for turning over the various parts of the press by hand when adjusting such arts or setting up the press for operation.

Shaft 37 adjacent such last mentioned end but lying within the side wall of the main frame 1 is formed with a crank. 45 from which the mechanism for reciprocating the bed 4.- is driven as will now be described. As best shown in Figs. 10, 11 and 12, a plate like lever 416 is oscillatorily supported at its lower end on a transverse shaft 17 that extends across and is secured to the opposite side walls of said main frame. The upper end of this lever is in the form of a segmental rack -18 that engages with a pinion 19 mounted on a transverse shaft in the upper portion of the frame, such shaft being located above and somewhat to the right of main shaft 12 and crank shaft 37 as shown in Figs. 1 and 1.

Crank 45 has an adjustable connection with the lever 16 through the medium of a pitman 51 connected at one end with said crank, and at the other end with paired links 52 that depend from a shaft 53 to which they are in turn pivoted at their upper ends. The links 52 are integrally united bymeans of an intermediate web and constitute in effect a single link (see Fig. 12). A second lever 54 is connected with the lower ends of said paired links 52 about the same axis as pitman 51, the other end of the lever being forked so as to pass around and lie on opposite sides of the plate lever 46 that carries the segmental rack 48, and between the arms 5 1 of the fork is pivotally secured a suitably shaped block 55 that is slidably held in a curved slot 56 formed in said plate.

From the foregoing construction, it will be seen that depending upon the location of block 55 in slot 56, the angle of oscillation of the plate lever 46 and thus of the segment gear may be varied from a maximum approx- 'imately'equal to the throw of thecrank when the block is at the lower end of the slot to a minimum when said block is in the upper" end ofthe slot. The slot 56 is substantially arcuat-e in form with the pivotal connection at the lower end of links 52fo1'" its axis and as a result of this arrangement the plate lever 46, will always be brought back to the'position shown in Fig. 10 irrespective of the position of'the, block in said slotevariation in such position merely aitecting the amount of forward movement of the plate.

For the purpose of convenientlyadjusting the position of the block 55 in slot 56, a threaded rod 58 is passedthrough a nut 59 .swiveled on the same pin 60 that passes through the forked arms 54E of lever 54 and the block'55, the lowerend of said rod being rotatably stepped in" a bracket 61 that is 20 swiveled onto the plate lever 46 about a pin 61 Journaled in an upwardly projecting arm 62 forming a part of said bracket 60 is a short shaft 63, the inner end'of which carries a bevel gear 6t that meshes witn a bevel pinion 65 pinned on the threaded rod '58. The outer end of the'shaft projects through a slot 66 in the adjacent side wall of main frame 1 and is fittedi with a hand wheel 67 whereby said shaft and thus thethreaded rod may be rotated to raise oi lQWerthe block 55 in slot 56 is-desired; The extent and curvature of slot 66 in the machine frame is suchas to permit the shaft 63 withhand wheel 67' the necessary travel incidental to oscillation of the plate lever 46 that carries semental gear 48.

The shaft'50 on which is mounted the pinion 4:9 wherewiththe aforesa d racklS engages, is provided atits respective ends with pinions 70- (see Fig. 6) that engage with,

downwardly directed racks 71 on the corre- M 1 1 sp ondings des otthe reciprocatory 06-214. Ac

cordingly, rotative movement impartedin the manner just described to said pinion 49 and thus toishaft 50 serves to reciprocate the bed backand'forth on the guides or ways 5'but irrespective of the'extent of such reciproca tory movement the bed'is always brought back" to the same starting point by virtue of the construction of the adjustable connected meansbetween crank shaft 37 and. the plate lever l6. The bed l'may be of any standard construction so farfas the present invention is concerned, provision being made on its up-v 1 per face for the IiCGPtlOll and clampingthereto of the type form in the usual manner.

I The construction of sheet carrying cylinder 8is shown in detail in Figs. 8 and 9. First however, it should be explained that this cylinder is driven in strict unison with the movement of the reciprocating bed by, bei'ngin tergeared therewith through the medium of an upwardly projecting rack 75 on one side ofthebed, (the left as shown in Fig. 6). that 1 meshes with a i 6"fixed -oi1. the correoutwardly sponding endof the shaftQ on which tll62Gyl= inder is mounted. The ends of said shaft-Q are not directly journaled inthe box 10 here-;

inbefore referred to but in eccentric bushings 77 that are then in turn j ournaled in the boxes, the degree of eccentricity of thebushings 77 being such that when conj ointly oscil-- lated to: one position in their'bearings inthe box, the cylinderis raised entirelyoutof contact withthe form on bed 4, whereas inanother position of said bushings the cylinder will rest on the form so as to press against the latter a sheet of paper suitably attached toth cylinder so as to be carried thereby. I

The cylinder8 is in effect a hollow drum with a smooth exterior surface save for re cesses 7 8 in which are received the clamping devices 79 that serve to secure the usual tym pan '80 in taut condition on the sheet carrying portion of the cylinder, said recesses also serve to receive a corresponding number or gripper fingers 81, the outerendsof which pro ect over the adjacent edge of the sheet carrying portion of the cylinder to grip thereto a sheet of paper when properly placed ping positionJby-means of a compression spring 83 associated wlth sald shaft. However a rocker arm 84 mountedonone end of the shaft 82 and lying without the correthereon. These gripper fingers are fixedly. mounted on a rocker shaft 82 journaled in the" cylinder body andare normally held in grip sponding end of the cylinder is so'disposed 5 that its free end which is equipped with; a roller 86 may engage with a. cam 87 attached to the juxtaposed face of the correspond as viewed ing box 10 (the right hand box inFigs5 and6). p g

The cylinder 8 is shown in its sheet receiving position in Fig. 8 in which it will be noted the gripper fingers 81 lie substantially directly below the shaft 9. In this position due to engagement of roller 86 on rocker arm Set with cam 87, said fingers are displaced slightly against compression spr n 83 and accordingly a sheet S properly positioned by the sheet feeding mechanism will be caught by said fingers the moment the drum begins to travel n a clockwise direction wlth resultant release or roller 86 from cam 87. The sheet is wrapped aroundthe 18 from that occupied by the forward edge of the sheet at the center of the movement ust described. 5. here the sheet is of suiiicient extent to reach substantially half way around i the cylinder, thegripper fingers 8l-will 0ccupy very nearly the same angular position about the axis of the cylinder as they did at the start (see Fig. 9) but if the sheet is shorter, such rotative movement of the cylinder may be stopped sooner, the corresponding movement of the bed 4 to the left being of course at the same time stopped, all through the medium of the adjustable driving connection for such bed which has been hereinbefore described in detail. There is in other words, no need to carry the movement of the bed and cylinder any further than necessary to complete the printing operation and bring the training edge of the sheet into the delivering position in which such sheet is shown in Fig. 9.

Thereupon the reverse movement begins, the sheet being stripped off the cylinder and passing onto the delivery conveyor as the cylinder rotates in a counter-clockwise direction. Just before the original starting edge of the sheet passes on to the conveyor, the shaft 82 is rocked through the medium of arm S l and cam 87 so as to release the sheet from the gripper fingers. The rotative movement of the cylinder continues until such gripper fingers are again brought to their initial or starting position shown in Fig. 8.

The eccentric bushing 77 wherein the respective ends of the shaft 9 ti at carries cylinder 8 are ournaled is arranged for oscillation through suitable connections from the same shaft 37 that serves to reciprocate bed These connections shown in detail in Fig. 7 include a cam 90 on the end of said shaft that projects through the right hand s de wall of main frame 1 as viewed in Figs. 2 and l, such cam being arranged to engage with a roller 91 on a lever 92 pivotally attached at one end to said side wall and having its other end connected by means of a link 93 with a rocker in the form of a bell crank 9% on the corresponding side of the machine that is mounted on a rock shaft 94, the latter extending transversely across the top of the machine and having a corresponding lever 9-1 mounted on its opposite end and one arm of bell crank 94f is connected by means of a short adjustable link 95 with an arm 96 that projects from the adjacent eccentric bushing while a similar adjustable link 95 connects the lever arm 94: with the arm 96 on the eccentrie bushing 77 at the other end of the drum. A tension spring 97 is connected with the lever 92 at the point where it is pivoted to said link 93 so as to cause the roller 91 to tr vel at all times in contact with cam 90, except when cylinder 8 is latched in raised position later c escribed.

[is a result of the foregoin construction, it will be seen that With each revolution of crank shaft 37 which hereinbefore de scribed, serves to oscillate the lever 4-6 and thus to reciprocate the bed 1, the two eccentric bushings 77 are oscillated, such oscillation being so timed as to raise the cylinder slightly during the return movement of the bed. The cylinder however is not lifted so much as to disengage the gear 76 thereon from the upwardly directed rack 75 on the bed and the return rotative movement of the cylinder is thus produced simultaneously with the return movement of the bed despite the fact that the cylinder does not contact with the bed as would of course be undesirable.

The cam 87 on the inner face of the right hand bearing box 10 as shown in Figs. 5 and 0 is preferably not fixedly attached thereto but is oscillatory about the axis located midway between its ends being mounted upon a short shaft 100 that projects through said box and has a lever 101 mounted upon its outer end. This lever is then connected by means of a downwardly extending link 102 (see Fig. 7) with another lever 103 attached to the corresponding end of a transverse rock shaft 104 (see Fig. At an intermediate point, i. e. located between the side walls of the main frame 1, said rock shaft 10& carries fixed thereto an arm 105 that is provided at its lower end with a roller 106 arranged to press against a disk cam 107 mounted on crank shaft 37. A tension spring 108 (see 7) is suitably connected with the outer end of lever arm 103 so as to retain the roller 106 at all times in contact with said cam 107, the form of the latter being such as to normally maintain the gripper-finger actuating cam 87 in the position shown in Fig. 7 but to slightly rock said last-mentioned cam first in one direction and then in the other so as to positively cause the gripper fingers 81 to lift in the manner and at the times hereinbefore described, i. e., when the cylinder 8 is in sheet receiving position and sheet delivery position respectively.

The mechanism for inking the form on the reciprocable bed aas best shown in Fi 7 (see also Figs. 1 and is all supported on a separate frame 110 located immediately to the left of the box 10 in which the cylinder 8 is journaled, the sheet delivery mechanism normally lying above such inking mechanism. Such delivery mechanism however as will be presently explained, is readily moved or tilted out of the way so that access may be conveniently had to said inking mechanism and the latter is in turn movably supported so that it may be raised upwardly and forwardly, i. e.', to the right in the figures just mentioned so as to lie above the cylinder and permit convenient access to the bed when the latter is in its retracted position, i. e., has been moved past said cylinder to the left. In this position of the parts just named, the form may be set up in the bed or removed therefrom as will be readily understood.

The frame 110 is of more or less open construction consisting essentially of two side members suitably connected together and normally rests on the lateral bed-enclosing walls 7 of the main frame 1. Said frame 110 is connected'to said main frame by two corresponding links 111, one oneach side, that are attached at their lower ends to a transverse shaft 112 journaled in said main frame and at their upper ends to a transverse shaft 113 in frame llOand in addition another shorter link 11 1 on the side of the machine shown in, Fig. 3 is'connected in parallelism with-said links 111 being pivotallyattached at-its lower end to a stud ,115 on the mainframe and at its upper end to a stud 116 on said frame 110.- As a result of the foregoing linkconnections between themain frame and the supplemental frame that carries the ink- .ing mechanism, such last-mentionjed frame it y will be seen, whenlifted upwardly will at the same time be carried forwardly in the man- 1 ner already. described, the points of pivotal referred to. I a V I The rear ends ofthe side members of frame attachment of the links being so arranged that saidsupplemental frame may be carried in the direction indicated'far enough to rest securely offits own i 110, it will be noted extend beyond ink-fountem 117 and notches are formed in such extensions to receive the riding and dis tributing rollers when these require to be lifted out of the way in order to get atthe' rollers beneath. v I, V

The detail construction of the. inking mechanism will require only a brief description. The fountain 1'17 which may be of any standard construction is located onthe sup plemental frame 110 near its outer, i. e.,'left hand end as shown in Figs. 1, 4 and 7 and includes as usual a roller 118 that forms its inwardly facing wall, such roller upon rotation presentinga fresh filmof ink to be takenup by. an oscillatory mounted duct roller 119' which in turn transfers such ink to a riding roller 120 and thence by means of'distributing rollers 121'onto two inking rollers 123 that are designed to-contact with the form on the bed, V Such last mentioned inking rollers are driven from the same upwardly directed rack 75 'on'the bed as .iscylinder 8,;a pinion 125 being provided for this purpose on supplemental frameqllO which pinion engages with I the rack in question and is at the same time directly intergeared with saidinking rollers 123. The ductroll'er 119 as well as a steel,

endof said lever-129 is connected byvmeansofa longitudinally extending; link with rider roller'119 at rest thereon arelheld at their respective ends .in slotted arms 126 that extend upwardlyfrom a rock shaft 127 in supplemental frame 110 and the desiredros .cillat-ion of said duct roller is produced by rockingsaid shaft through the medium of a lever arm 128 on the oneend thereof'whioh has rolling contact with theupper endfof a double arm lever 129 pivotally secured to the side wall of the main frame 1; t The other weight in the position last a lever arm 130 fixed on the corresponding end of a shaft 53 to which the links 52 heretofore referred toa-s a part of the'bed. reciprocating mechanism are attached. 1 It will be understood that this shaft is journaled in 70 the main frame and said levers 52 keyed or somewhat more directly connected therewith through the mediumof a lever arm131 on the sameend of said shaft that carries cam 90, said lever arm lying outside the cam so as to be free to rotate through'a full circle without interfering with the mechanism actuated by the cam. Pivotally attached to the correspon'dingend of the shaft 9 1 that carries bell cranks 9 1 is another bell crank 132 that is connected by means of a link133 with the leverarm 131 and by means of a second link 134 with a pawl and ratchet device 135 of familiar construction on the correspond ing end of the fountain roller 118. Rotation of crank shaft 37 .f it will accordingly be seen by rocking the bell crank 132, once for every revolution of said shaft, will rotate said fountainroller through a part revolution as determined by thesetting of the pawl and ratchet 'device'135; Asmall hand crank 136 is also attached to said fountain roller to permit manual rotation thereof when and as desired; e I i The'stack of blank sheets which are to be fed tot-he press will be supported on a feed 3 7 table 1&0 which in general at least will be of standard construction and the same is true of the :deliverytablelll on which the sheets are de'signedto be deposited after printing. 7 I Said tables 140. and 141 are located at the respective ends of the mainframe 1 and incline slightly inwardly, i. e. towards each other as shown in Figs. 1,3 and 4. Each table is carried on the upper" end of a rack support 140 and ldl that is slidably held in" a corresponding bracket 140 and 141 respectiveframe, and including an upwardly rising guideI140 9.11am against which the respectivestacks of paper are designed to rest;

The sheet delivery'or feedftable 141 will ly', such brackets being attached to and proa- 'jecting from the adjacent endsrof the main require to be lowered simultaneously with v thejraising of feed table 140 and at the'same rate inasmuch as the sheets taken off of the feed stack are after printing delivered to and added onto the stack on said first-named table.

Itis thus permissible and desirable to provide for simultaneous operation of the two tables in the opposite directions indicated and for this purpose I provide a shaft 142 that extends longitudinally through the main frame 1, see Fig. 4), said shaft lying approximately midway between the side walls of said frame and being suitably journaled in the respective end walls thereof. Such eX- tension 143 of the one end of said shaft 142 connected therewith by means of a friction slip clutch 144 is suitably intergearedwith a pinion 144 in bracket 140 that meshes with the rack support 140 of the feed table; while a corresponding extension 145 of the other end of said shaft 142 similarly connected therewith by a friction slip clutch 142 is suitably intergeared with a pinion 147 that engages with rack support 141 of delivery table 141. A hand crank 148 is adapted to rotate said pinion 144 through a suitable ratchet device and a hand crank 149 is similarly adapted to rotate said pinion 147 when it is desired manually to adjust the height of the respective tables, such adjustment being permitted such ratchet devices without interfering with the automatic operation of the elevators. The respective clutches 144 and 146, it will be understood, constitute safety devices in case the corresponding table is accidentally carried to the limit of its movement.

Automatic actuation of shaft 142 is derived from the oscillatory shaft 53 which as hereinbefore noted is rocked in unison with the crank shaft 37, incidentally to the reciprocation of the bed 4. As shown in Figs. 4 and 5, a downwardly inclining lever arm 150 is fixed to said shaft 53 at an intermediate point and a link 151 connects the outer end of said arm 150 with one arm of a bell crank 152 oscillatorily mounted on said shaft 142. The other arm of said bell crank carries a pawl 153 that is adapted in one position to engage with a ratchet wheel 154 fixed to said shaft and when thus engaging therewith oscillation of the bell crank will serve correspondingly to rotate said shaft. The pawl is counter-balanced or otherwise arranged so as normally to engage with the ratchet; it is designed, however, that it should. only thus engage when the top of the stack of sheets on the feed table 140 has fallen to a predetermined level, the mechanism for thus controlling such pawls engagement, and so the operative connection of rock shaft 53 with the feed and deliverytable actuating shaft 142 depending upon the level of the stack of sheets on said feed table, being shown in detail in Figs. 13 and 14 (see also Fig. 3).

Journaled in the main frame 1 or rather in the end wall thereof adjacent the pawl and ratchet device just referred to is a light trans verse shaft 155 upon which is mounted at an intermediate point lying directly above the axis of shaft 142 a short arm 156 provided at its lower end with a roller 157. in its normal position as shown in Figs. 13 and 14, this roller engages with a curved linger 153 on pawl 15.3 and serves to retain such pawl out of engagement with ratchet wheel 154. In this position accordingly oscillation of the bell crank 152 and such pawl have no effect on either the feed or delivery table. One end of the shaft projects beyond the side wall of the main frame shown in elevation in Fig. 3 and has mounted thereon a bell crank lever 158 to one arm of which is attached a tension spring 159 that normally serves to hold the other arm thereof against a stop pin 160, the position of the bell crank and shaft as thus determinedcorresponding with the normal position of parts shown in Figs. 13 and 14-. Oscillatorily mounted on a stud 161 directly above said bell crank 158 is a second reversely disposed bell crank 161, the depending arm of which is adapted when it is swung far enough in a counter-clockwise direction as viewed in Fig. 3 to strike against the upwardly directed stop-engaging arm of said bell crank 158. Said bell crank 161 is thus oscillated in unison with the movements of the printing couple and other parts of the machine through the medium of a link 162 which is connected at one end with such depending arm of said bell crank and which has a lost motion connection at its other end with crank shaft 37 such last-mentioned end of the link is forked to engage a stud 163 centrally projecting from the end of said shaft and a cam 164 on the latter is disposed to engage with a roller on the link adjacent such fork. Accordingly the link is moved to the left as viewed in Fig. 3 a distance equal to the maximum throw of said cam once every revolution of shaft 3'? and is free so far as the operative connections with the shaft are concerned to return i. e. move to the right a sutlicie'nt distance to cause the depending arm of bell crank 162 to strike against the stop-engaging arm of bell crank 158 with the result that the roller 157 on arm 156 is rocked out of the path of pawl finger 153. However this movement of the parts in question can only occur when a vertically reciprocable gauge finger 166 connected with the other arm of hell crank 162 by means of a rod 1.67 and disposed. to rest in its lowermost position on the top of the stack S, drops to a predetermined position as determined by the height of such stack.

As a result of the foregoing arrangement of parts, it will be seen that whenever the top of the stack S falls to a predetermined level. the hereinbefore described elevating mecha nism will be actuated to raise the table 140 until the top of the stack is again brought to a level where bell crank 162 no longer engages and actuates bell crank 158. At thesame time that table 140 is elevated, the sheet receiving or delivery table 141 will of course be lowered a corresponding amount.

[Successive sheets 8 of paper are brought from stack S to the position hereinbefore describedwhere theyareattached to cylinder 8 through the medium of the gripper fingers 81 onsaid cylinder as shown in Fig. 8, by means of picker fingers oscillatorily mounted above the feed table 140, in combination with r 'a conveying mechanism consisting of upper and lower sets of endless tapes 171 and 172. Such upper tapes 171 as best shown in Figs.

8'and 9pass around rollers 171 and 171 while the lower tapes'172 similarly'pass around rollers 172 and 172". Associated with such lower tapes moreover is a slotted feed table 173 which assists at its upper end'in guiding the sheet between the respective rollers 171 and 172 as well as affords a support for the sheet as it is carried downwardly by the tapes that passaround said rollers and the corresponding rollers 171 and 172.

cillation of said "frame, said roller and the 9 corresponding ends-ofthe tapes 171 may be raised just to clearthe lower set of tapes 172 without however disengaging the gears that of a-two-arm lever 179 pivotally attached to roller. 17 2%.

interconnect said roller 171 with the opposed For the purpose of thus oscillatingframe 175 in-unison with the other movements of the machine, the shaft 176 to which said frame isattached is provided at one end with' a downwardly "projecting arm 177" against which a roller 178 on the upper end the side of the main frame '1 or rather the bed enclosing extension 7 "of such main frame is adapted to bear. For the purpose of actuating the same, the other arm of lever 17,9is connected by means of a link 180 with a lever 181 pivoted at its upper end about shaft 104;

(see Fig. 5) and having roller engagement at its lower end with a earn 182 on crank shaft I a sheet brought'thereto the picker fingers" tion-actuatedtype,

. Said cam is so designed as properly to timethe opening of the tapesin the manner ust described so as to receive the fore edge of of flexible ducts 185 with a branch 186 that leads from pipe 32 connected with the intake. of the air pump 30. At a convenientpoint in, I said pipe 186 is located the valve 187, the detail construction (35 willbe found in Figs. '15and 16.

' of'such 1 Such picker fingers are shown as 3' of suc-' belng connected by meaus vacuum control of which torlly supported on'rock arms 197, the latter It will'be understoodthat it is merely necessary that this valve should open said pipe 186 i to the atmosphere in order to relieve the suction at the sucker tips and thus release the sheet therefrom. The valve accordingly takes the form of a poppet 187 that is normally held in seated position against the open ended casing 188, that forms'the valve body, by means of aspring 189 which cooperates with the reciprocable stem 190 of said valve. This stem extends transversely through the machine frameand is prov ded on the front side of the latter with a suitable knob 191 whereby the valve may be manuallyoperated when desired.

In the operation of the feed conveyor, as j I 1 should have been previously described, roller 171 isdesigned to be raised uponmovement of link 180 to the rightas viewedvin Fig. 3,

just as soon as a sheetis carried by said conveyortothe lower end thereof in position to be gripped'to the cylinder 8.- While one a sheet is being thus fed by the conveyor, the

sucker tins170 are moved back to the stack Ste pick up a fresh sheet and suction accordingly requires at thisstage to be appliedto said tips and remain thereon until such fresh sheet is brought up to the receiving end of the feed conveyor, when the suction line 186 is again opened by unseating valve 187, this occurring coincidentally orpreferably directly after theroller 171 has been raised. V

In orderthus accurately to time the closing and opening of said valve 187 with such liftin ofthe uppertaperoller, thevalve actuatingmeans are-combined with those for v thus lifting the roller. Specifically there is provided onthe link 180 a .stud192 so an f ranged as to strike against one, arm of a bell crank 193, the-other end of :which engages with a stop 19 1 on the outer projecting end of valve the-link is moved to the left as viewed in Fig. .3, said stud 192 strikes against the'bell crank and holds the valve open against spring stein 190. Accordingly whenever 189 until the link is again allowed to return incidentally: to the pivotallifting of said tape roller 171 As shown in Fig. 15, the stud 192 is slightly spaced from the corresponding cud ofthe bell crank 193 so that there is a timeinterval before engagement of these parts occurs in "order to permit'said roller to be lifted in advance of the insertion of 'a sheet by he sucker tips and the release 186 due .to the opening of valve 187.

sheet by breaking the suction in line Such sucker tips are adju'stably clamped tothe lower ends of oscillatory arms 195 to v l1icl1 is imparted a compound oscillatory movement by mcansnow to be described. The arms in-questionlare to and curve dcwnwardly from the upper ends of the upwardlyextending arms of corresponding bell cranks 196 that are oscillae pivotally attached having fixed pivotal supports on the frame of the machine. Said arms 197 are arranged to be period ally oscillated in a general vertical direction by means of a link 198 connected at its upper end with one such arm and at its lower end with a bell crank 199 that is in turn connected by means of a link 200, with a lever 201 pivoted at its upper end about shaft 10-1 (see Fig. 5) and having roller engagement at its lower end with a cam 202 on crank shaft 3?. The lower downwardly extending arm of bell crank 196 is operatively connected with crank shaft 37 through similar means consisting specifically of a link 2023 pivoted at its upper end to such arm and at its lower end to lever arm 20 1 on the shaft 205 that serves the same time as oscillatory support for bell crank 199, an angularly related arm 206 on said shaft being connected by means of a link 20'? with another lever 208 pivoted at its upper end about shaft 10 and having roller engagement at its lower end with a cam 209 on said crank shaft 8?.

The cams on crank sha t 87 whereby arms 19 and bell cranks 196 are thus respectively rocked are properly timed so as to impart to the sucker fingers the necessary u and down movement and movement in ahorizontal direction to bring the fingers from the sheet engaging position shown in Figs. 1, 3 and 4 where assuming that the fingers are under suction, the topmost sheet on the stack S will be picked up and carried around the upper end of the feed table 173 and its forward edge inserted between the two top conveyors and in between the latter coincidentally with the raising of the upper tape roller 171; whereupon said sucker fingers are returned again to their initial position. The movement of the sucker fingers is further effected and controlled by an arm 210 that projects rearwardly from one of the arms 195 to which such sucker tips are attached or rather from the rock shaft 211 to which said arms are in turn attached; said arm 210 (see Fig. 8) having a roller 212 that travels in an arcuate slot 213 formed in an adjustably supported bracket 214-.

in order to provide for the contingency where through accident or otherwise no sheet fed in properly timed relation to the cylinder 8, it is necessary that such cylinder be held in its raised position wherein it does not contact with the form on bed 1-, except as a sheet is thus supplier. to it. To this end a latch 215 is pivotally mounted on a stud 216' on the side wall of the main frame 1 adjacent the link 93 whereby, as hereinbefore described the eccentric bushings that serve to thus raise and lower the cylinder 8 are conjointly rocked. This link (see Fig. 7) it will be noted is formed on its adjacent edge with a notch 217 wherewith said latch 215 is adapted to engage in the position of the link corresponding with the raised position of the cylinder. Latch 215 is connected by means of a horizontally extending link 218 for movement to release said latch from engagement with said notch upon oscillation of shaft 53 which it will be recalled is operatively connected with crank shaft 37 through the adjustable means whereby the printing 00113 19 is operated. To this end an arm 219 on said shaftis provided with a laterally extending pin 220 that is adapted to engage with a notch 218 on the under side of said link 218 provided the latter is allowed to drop downwardly far enough, as it should in cases sheet has been placed in position to be seized by the gripper fingers on the cylinder. In other words, in such case the link 93 should be left free to rock the eccentric bushings and thereby lower the drum or rather the sheet thus received thereon into contact with the form.

The notched end of link 218 is periodically raised and lowered in unison with the move ment of the rest of the press mechanism by means of a rock shaft 221 extending transversely below the feed table 173 and conneoted with such link-end by means of a short link 222. Said shaft 221 is ocillated by means of the same reciprocable link or bar -80 (see Fig. 3) which serves to actuate duct roller 119, said bar being connected with the shaft in question through the medium of a link 2223 that has slotted pivotal connection with an upwardly directed lever arm 22% on the corresponding end of the shaft.

Connection of the bar 223 with the shaft 221 is shown in detail in Fig. 17 which also illustrates the control element proper consisting of a light finger 225 pivotally connected at its rear end to a short downwardly directed arm 226 on the same shaft 221. The free end'of the finger curves upwardly and bea on the outer side of the feed table 173 adjacent the lower edge 237 thereof, being held in light frictional contact with the under side of a guide 228 located above such feed-table edge by means of a tension spring 229. At the proper point in the line of contact of such finger end with plate 228, the latter is formed with an aperture 228 of the proper sizeto receive such finger end this being the position of parts shown in Fig. 17. Normally, howeven the forward movement of the finger occasioned by the p riodical rocking of shaft 221 will occur following the deposit of a sheetby the conveyor between the lower edge of the table and the curved guide 228 so that the aperture 228 will be covered by such sheet. The end of the finger accordin ly can not enter but will slide on past such aperture and the shaft 221 will rock far enough in a clockwise direction as viewed in Fig. 17 (see also Fig. 7) to permit the notched end of link 218 to engage with the pin 221 with the resultant action hereinbefore described; r

The rocking of the shaft in such clockwise 2 addition to the one wherewith the finger 225 is adapted to-coopera-te in the manner just.

described inorder tocontrol the lowering of the cylinder into printing contact with the form on the beds These fingers are of spring metal and bearlightly against the upper surface of feed table 173 at the lower edge of said table beyond which they project a short distance asshown in Figs. 8 and 9. Cooperative with said spring guides 228 are other similar guides 229 that extend forwardly from the under side of the'feed table into contact at their tips with said guides 228. In counter-distinction to the upper guides which are fixedly attached to a cross bar 228? extending between the box 10, these lower guides are adjustably attached at their. rear endsto .a rock shaft 229*, said shaft being adapted forioscillation through themediuni of a lever arm 229 on the front end thereof and a link 22 9 equipped at its free end with a roller 229 bears against the adjacent face of the bell'crank132 which forms a part of the cylinder raising and lowering mechanism'. This face of the bell crank has a cam conformation so as tobe adapted toimpart slight reciprocating movement to said link, this movement in turn being translated into a slight up and down movement of the tips of the guides 229, which last mentioned movement is timedto contact with the forwardedge of a sheet that hasbeen brought by the feed conveyor into position to be gripped to the cylinder.

While the conveyorthat forms apart of the sheet feedingfmean s extends in a clownwardly. inclined direction so as to bring the sheet to the forward angle between the cylinder and bed in the starting position thereof,

I I cry means extends from the opposite side of the conveyorthat constitutes'the sheet delivsaid cylinder in a line approximately tangential to the upper surface of the latter; furthermore-theframe 230 of said delivery con- 'veyor is .vosc'illatorily supported about a pivota-l axis 23l atthe extreme end of the machineso that said conveyor as a whole may be tilted upwardly and to the left as regarded in Figs. ,1 and4 and thus uncover the inking mechanism, as also leave the way clear for the latter to be swungon the parallel link sup port therefor. provided upwardly and to the left into a positionof rest over the cylinder 8; lVhen in its normal operative position, the free end of frame 232rests upon and is temporarily secured to suitable abutments onthe housings 10 in which the ends of the cylinder are journaled. Said delivery conveyor as shown comprisesbut one set of tapes 233 that pass over rollers 234 and 235 in the respective ends of the frame, such first mentioned roller being equipped'with a pulley In addition to the blowernozzle 237, there is provided at the forward end of the delivery conveyor frame 230 a plurality of st ripping fingers 240 that are carried by a rock shaft24l journaled transversely of said frame, said fingers normally lying underthe influence of gravity in the position shown in Fig. 18 where they are adapted to engage with the under side of a sheet 8 on the cylinder upon the reverse, or sheetdelivery movement of the latter. The function of the-blast of air delivered by the nozzles .237 is to prevent the edge of the sheet fromkfiuttering and insure its-smooth passage over such stripping fingers onto the "tape 233 of the delivery conveyor.

The stripping fingers 240 require. to be,

raised asthe freshly printed sheet is carried around the cylinder during the printing oscillation of the latter and to this end the actuating means shown in, detail in the aforesaid Fig. l8 are provided. Such means include a leverarm 242 on the rear endiof rock shaft 241, i. e., that shown in Fig. 8,

pressed or operative position of the stripping fingers, lies in, the path of a reciprocable, inclined cam 244. The latter is formed on an upwardly projecting arm of a slide245 that has. slottedsupporting engagement at an intermediatepoint with a pin 246 on the adjacent box 10 and has also slotted actuating engagement at its lower end with a pin 247 on an upwardly extending bracket 248 carriedby the reciprocable linker bar 130. Pivotally attached 'to box lO'adjacent the canrformed arm of slide 245 is a latch 249 formed on itsoneedge with a step or offset 250 so located as to be adapted to engage with pin 243 when the latter. is raised by means of cam 244 inthe manner described above, said latch being moved into position thus to engage the pin by: means of, a.tension spring 251 that connects its lower end 1 with the cam arm'of the slide. A stop 252 such arm having a laterally projecting pin 243'adjacent its free end that, in the de-v is also provided on such arm to limit the movement of the latch under the impulse of the spring. The latch it will be further noted is provided with a second step or ofset 253 below offset 250 whereon the pin 243 rests when the stripping fingers are allowed to drop into their operative position, which as already explained is the position in which they are illustrated in Fig. 20.

From the foregoing description, it will be seen that upon movement of slide 2 15 to the left in Fig. 18, the cam 24 1 on the upwardly directed arm thereof will ride under pin 2-13 and elevate the latter until it engages the stop or offset 250 on latch 2&9, where such pin will remain until the reverse movement of the slide occurs and rocks the latch so as to release the pin from offset 250, allowing it to drop onto offset 253.

It will be noted that link 223 which as hereinbefore described serves to actuate the rock shaft 221 (see Fig. 17) that controls the latch 215 whereby the drum is held in raised position isconnected with the reciprocable link or bar 130 through the same bracket 248 wherewith slide 245 is connected and movement of the sheet registering device shown in Fig. 19 is likewise derived from this same bracket.

Such sheet registering device comprises a rod 255 transversely disposed above the curved guide plate 228 at the lower end of the feed table, said rod being slidably secured adjacent its respective ends to the upper face of the latter. The forward end of the rod, that corresponding with the elevation of the machine shown in Fig. 1, is pro vided with a knurled knob 256 or equivalent means whereby it may be manually rotated to adjust two stops 257 that are adapted to be secured on said rod after the fashion of nuts. To this end the portion of the rod lying within the sides of the feed table is threaded save for a short distance adjacent each such side, which is left smooth and of slightly reduced diameter to receive the corresponding stop 257 when not in use.

The rear end of rod 255, that corresponding with the elevation of the machine shown in Fig. 3, is provided with a rounded head 258 that is adapted to bear against a trans versely slidable cam 259. being held at all times in contact with such cam by means of a compression spring 260. This cam is detachably held in a slide 270 supported from the adjacent portion of the machine frame and is adapted to be connected at one end by means of a pin 271 thereon with either of two spaced apertures 272, 278 in the aforesaid bracket 248 that is carried by the reciprocable link or bar 130. The operative face of cam 259 comprises two contiguous symmetrical portions, one such portion being adapted to coact with the head 258 on rod lengthwise of the rod either of 255 when the pin 271 is engaged with aperture 272 and the other portion thus to coact when said pin is engaged with the other aperture 273 in the bracket 248. Depending upon the manner in which the cam is thus connected with the bracket, it will be effective to cause movement of rod 255 in one direction or the other and is thus adapted to bring the corresponding stop 257 into the position with which it is desired to have the sheet registered. In other words, either lat eral edge of the sheet may be brought into register as desired by properly adjusting the corresponding step 257 on rod 255 and by properly connecting the cam slide 259 with bracket 248.

Associated with the mechanism shown in Figs. 7 and 17 for controlling the latch 215 whereby the cylinder 8 is held in raised position upon failure of a sheet to be properly fed thereto is an automatic device for completely stopping the operation of the press, this device being further illustrated in Fig. 20. Reference has heretofore been made to the hand lever 2st (see Fig. 1) that cooperates with a segmental ratchet 25 by means of which connection of the driving pulley 18 with the main shaft 12 is controlled.

Upon reference to Fig. 20, it will be seen that a shroud plate 275 is pivotally attached at its lower end to said segmental ratchet, said plate normally lying in inoperative position so as not to interfere with engagement of the pawl with such ratchet. On the upper free end of plate 275 is a pin 276 that lies approximately on the same level with and adj acent the rock shaft 53 and eccentrically pivoted at one end to such rock shaft is a plunger 277, the other or free end of which is adapted when raised to the proper plane to strike against pin 276 on shroud plate 275. A link 78 connects the outer notched end of link 218 with such plunger so that the latter will be thus raised whenever sucn notched end of said link 218 is raised, i. e., whenever a sheet fails to be received in proper position at the lower end of the food table 173 for engagement by the gripper fingers on the cylinder 8.

The effect of raising the plunger 277 into )osition to en as'e with the 3111 276 is to rock C O the shroud plate 275 through a sufficient arc to disengage the pawl on lever 24 from the ratchet 25. Accordingly whatever the position of the lever 2 may be, depending upon he speed setting of the press, it will thereupon instantly drop to its lower, i. e. full stop position, which not only releases the pulley 18 from driving connection with the shaft but serves at the same time to set the brake 26.

The sheets 8 are carried by the tapes 233 of the delivery conveyor to the further or rear end of the machine where they drop by gravity on the top of the stack S that accumulates on delivery table 141. Associated with the table is a suitable jogger 280 that serves to

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