US1558686A - Printing press - Google Patents

Description

Oct. 27., 1925- QM. LIPTON ET Al.-

PRINTING PRESS Filed June 21, 1922 9 SheetsShee t 2 VENTOBS fe/j A TTOR NEY s Oct.- '27, 1925. 1,558,686 M. LlPToN r-:T AL

PRINTING PRESS Filed Jung 21, 1922 y 9 sheets-sheet s V ,d 2f 24 if ,f/@.1

17IN I I. u ri@ Hw. Wrwlwm" Illlll-:IIHHMII Il l M. LIPTON ET AL PRINTING PRESS Oct. 27, 1925. 1,558,686

Filed Jun'e 21, 1922 9 sheets-she@",A 4

@a j, f

BY C l ,wf/'r ATTORNEYS' M. -LIPTON ET Al.

FRINTING PRESS meduune 21, 1922- y l@ INVENTORW 9 Sheets-Sheet 5 fie/'r A TTOR NE YS M. I IPTON ET AL PRINTING PRESS oct. 21, 19.25. 1,558,686

Filed June 21, 1922 9 Sheets-sbagli um m .l n p i INI/.Elvollza` BYMMYMW( Oct. 27, 1925- A1,558,686

M. PTo N Er AL l PRINTING PRESS Filed June 21, 1922 9 Sheets-Sheet, '7

oct. 27,1925. 11,558,686.

M. LIPTON ET Al.

PRINTING PRES-S Filed June! 21., 1922 9 Sheets-Sheet,

' INVENTORS fMrATToRNEY Oct. 27,1925- 1,558,686 v M. LIPTON ET Al.

PRINTING PRESSl Fled' June 2l, 1922 Y 9 Sheets-Shes@ 9 l 3 W, W /M34.

ff/h4 TTOR NE Ys Patented Oct.v 27, 1925. i

UNITED STATES PTENTA OFFICE.

rromus LIr'rON, OE nU'rHEnEOED, LOUIs'iHAENLEIN, or EAST EUTIEEEOED, AND EEEDEEICE w. HILL, or EUTEEEEOED, NEW JERSEY, EssIeNOEs 'ro THE EUcns a LENG MANUEILCTURING COMPANY, A CORPORATION or NEW YoEx.

PRINTING PRESS.

` Applicationdlled June 21, 1922. `Serial NO.;570,001.

United States papers), and LoUIs HAEN-v LEIN and FREDERICK W. HILL, citizens of the United States, residents, respectively, of city of Rutherford, county of Bergen, State of New Jersey, city of East Rutherford, county of Bergen, State of New Jersey, and city of Rutherford, county of Bergen, State of New Jersey, have invented certain new and useful Improvements in Printing Presses, of which the following is a specification.

This invention relates to printing presses and has particular` reference to that class of machines known as the rotary oiset type.

An' important objectl of the invention is.

to provide in a machine of the class mentioned a simple and reliable automatically actuated means for lifting the inking rollers from the plate cylinder andl moving the impression cylinder out of operative position with respect to the blanket cylinder, should a work-sheet, under any condition, fail to enter a machine in-the course O its operation.

A further object of the invention is to provide in a machine of the class mentioned a manually yoperated means for throwing the blanket cylinder out of operative position in combination with anautomatically acutated mechanism for moving the same into an operative position with respect to the plate and impression cylinders upon the insertion of a work-sheet. y

Another object of the invention 1s to pro-l vide a means, functioning in connection with the several automatically actuated mechanisms, whereby certain automatically controlled elements are rendered inoperative at ,properly timed, predetermined intervals, and are maintained in their respective inoperative positions during predetermined periods to insure reliability in the operation of the machine as a unit.

A further object of the invention is to so construct and arrange the elements entering into the various automatically actuated controlling mechanisms that such controlling mechanisms may be easily `rendered nonautomatic in their operation and made to depend upon manual control for the exer- ,cislng of their respective functions.

In addition to the above it is also an Obamr ject of this invention to make possible the production of a machine of the class -men-v tioned, which is comparatively simple in design, relatively inexpensive to manufacture, positive and reliable in operation, easily controlled, readil assembled, rigid in design and capable o withstandingprolonged use with but a minor cost in upkeep.

Other Objects and certain -advantages of the invention will become apparent from the following description when taken in connection with the accompanying drawings in which- Figure -1 is aside elevation of the machine showing the position of various automatically actuated controlling elements in the resence of a work-sheet.

Figure 2 is a side elevation of the machine showing the Osition of various automatically actuate controlling elements in the absence of the work-sheet.

Figure 3 is a front elevation of the machine.

YFi mental side elevation of an automatically controlled lifting mechanism for the inking rollers.

Figure 5 is a sectional viewtaken on line 5-5 o f Figure 4.

. Figure 6 is a sectional view taken on line 6--6 of Figure 4.

Figure 7 is a detailed view of a'lifting oller, showing the retaining means therev or.

Figure 8 is a perspective view of an eccentric adjusting pin shown in Figures 4 y' and 6. c y

Figure 9 is a front elevation of an intermittently actuated inking mechanism.

Figure l0 `is an end elevation of the ink-l ing mechanism as viewed from the left in Figure 9.

gure 4:` is a somewhat enlarged frav- Figure 11 is a vertical sectional View taken on line 11-11 of Figure 9.

Figure 12 is a perspective view of: a-double pawl unit, and releasing means therefor.

Figure- 13 is a side elevation of an automatic trip mechanism and operating cam j 55 ving roll to be so operated, we have provided Figure 16 is a view showing in elevation an oscillating trip actuating lever and a trip unit carried thereb Figure 17 is a sirie elevation of a trip unit controlling cam.

Figure 18 is a View similar to that of Figure 15, showing the operating cam in an advanced positie Figure 19 is a fragmental elevation of a trip arm releasing and trip lever locking mechanism.

Figure 20 is a front elevation of the automatic trip mechanism showing the trip lever,

Figure 24 is a horizontal sectional view Ataken on line 21-24 of Figure 22.

. Figure 25 is a sectional view taken on line 25 25-25 of Fi re 24. Figure 26 is a able cam. I y

Figure 27 is an enlarged `fra entalview v of a clutch engaging pawl an pawl carryperspective viewy of l a vari- 30 in disc.

A igure 28 is a fragmental sectional View taken on line 28-28 of Figure 27.

In the drawing wherein for the purpose of illustration is shown what we at present 85 consider the preferred form of our invention, the numeral 5 indicates, as a whole, a frame having a base 6 and lside members 7, which are arranged in vertical, positions and spaced an appreciable distance apa-rt to accommodate the usual inking drum. 8, plate cylindr 9, blanket cylinder 10, and impressien cylinder 11. T ese lelements are suitably ournaled in their respective horizontal lpositions to the side members 7, and are adapted to be' rotated through the instrumentality of suitable. trainsv of gears 12, which receive power of rotation from a driving ulley 13, adapted to be connected to a suita le source of power notshown.

With the frame 5 there is associated, in proximity to the inking drum,8, an ink reservoir 14, adapted to receive a suitable quan` tity of printing fluid, which is supplied to the inking drum 8 through the instrumentality of an intermittently actuated inking roll 15. Under certain conditions-for example, when the machine'is about to be started after a prolonged interval of inoperativenessit is desirable to rotate the inking roll 15 man- (l0' \'uallyV in order that the operator may be able to properly adjust certain elements not shown overning the quantity of printing fluid taen up by the inking roller rior tothe insertion of work and to enable t is inkproducin an oscillating lever 16, suitably lsup orted in operative relation with res ect to tlie inkin roll 15. The lever 16 is-a apted to be osci lated around its pivotal connection and is provided with a pawl 17, adapted to engage a co-operating ratchet wheel 18, suitably connected with the inking roll 15. `.From this construction it is' apparent that by properly operating the lever 16, the roll 15 may be rotated through as many complete revolutions as it is de emed necessary.

After the operator has begun to feed the work into the machine, it is desirable to effect a uniform intermittent operation of the inking roll 15, and, in order to accomplish this intermittent operation we have provided a double pawl unit indicated asa whole by the numeral 19. This pawl unit includes a pawl 20, havinga pin -21 projecting from the side thereof which is adapted to enter a slot 22 formed in an adjacent pawl 23. These two pawls, namely, 20and 23, are adapted to be lifted simultaneously by means of an arm 24, carrying alug 252 within which one `end of a compression spring 26 is disposed, ythe other end of the spring 26 being carried within a pocket 26', formed in the pawl 20.

In order to lift the arm 24 either manually or automatically, there is provided a finger 27, which is adapted to engage a pin 28, carried by the arm 24, the finger 27 being suitably connected to a horizontally disposed operating rod 29, which may be operatedmanually through the instrumentality of an operative lever-30, .or automatically through 'a suitable mechanism associated therewith and hereinafter more particularly described.

The pawls 20 and 23 and also the lifting arm 24, are suitably mounted upon a pin 31, carried by an oscillating bracket 32, connected to a suitable reciprocating vlever 33,'

which derives its reciprocatory motion from some appropriate operatingpart of the machine. As a result of the reciprocatory movement of the lever .33 thevpawls 2O and 23 are caused to intermittently advance their respective ratchet wheels 34 and 35 thus an intermittentrotation of the inking ro l 15 to which the ratchet wheels are suitably connected. By the provision of the spring 26 it is apparent that a yieldable con- '.nection is aordedbetween the two pawls 20 and 23 and the arm 24. lThis yieldable connection is desirable for the reason that it permits the pawls 2O and 23 to remain in driving engagement with their respective ratchet wheels 34 and 35,.even if the lifting finger 27 is actuated during the intermittent rotation of the inking roll 15, thus relieving the awls 20 and 23 of any excessive strain to w ich they would beA subjected if Vthe lifting arm 24 were connected directly or unyieldingly to the pawls.

With machines of the type to which our 139 invention pertains it is desirable, under certain condltlons, to be able to vary or control the intermittent operation of the inking roll,

and to lmake possible this variation lwe have provided a cam 36, which is rovided with a segmental gear 37, adapte to engage a ycooperative gear segment 38, suitably connected to a horizontally disposed shaft 39, which is adapted to be adjusted by means of a thumb screw 40, carried byl one of the side members 7 and so arranged as to engage an arm 41, suitably connected to the shaft 39. By varying the position of the arm 41, through the instrumentality of the thumb screw 40, it is apparent that the position oE the cam 36 may be changed withrcspect to the pin 28, which is adapted to cooperate therewith as the lever 33 is reciprocated. A proper adjustment of the cam 36 will enable the pawls 20 and 23 to be held free of their y respective ratchet Ywheels 34 and 35, in their forward movement, a suicient length of time to permit them to pass over a predetermined number of teeth after which time they are allowed to fall into engagement with their respective rratchet wheels. This simple adjustment aifords a means by which theinking roll 15 may be rotated through any predetermined number of degrees within certain limits the minimum and maximum adjustments being, in this instance, such that we may vary the rotation of the inking roll from 1/2 tooth to 31/2 teeth. The variation in the rotation of the` inking roll 15, inthe terms of half teeth, is made possible by reason of the fact that the pawl 2O is longer than the pawl 23 to the extent of one-half inch the length of a single tooth of either of the l ratchet Wheels 34 and 35. Iffor example,

the cam 36 is so set with respect to the pin' 28, carried by the arm 24, as to `effect an intermittent rotation of the inkiug roll 15 to the extent of a half tooth, the pawl 23, as shown in Figure 11, will engage the next succeeding tooth, and upon the next cycle of operation of the reciprocating lever 33, the

pawl 2O will engage the next succeeding tooth of its corresponding ratchet wheel. This alternate 'engagement of th pawls 20 and 23, with the succeeding teeth of their respective ratchet wheels 34 and 35, will concontinue so long as the cam 36 is set to eii'ect an intermittent operation of the inking roll 15 through a'fraction of a complete revolu-l tion, corresponding to the length of a half tooth. Since the adjustment-of the cam 36 may be made to eect a movement of the inking roll 15, equivalent to a half tooth, yit follows thatv the adjustment may be made ranging iron1 a minimum throw to a maximum throw t rough intervals of a half tooth if desired. It is, of course, understood that"- an adjustmentV may be made from a minimum to a'maxlmum throw without necessarily passing through the several intermediate adjustments that is't say, if thev cam 36 is set to advance the inking roll 15 a distance equal to a half tooth, the cam may be immediately adjusted to e'iiect a maximum intermittent' movement of the inking roll v15, which we have in this instance adopted as 3% teeth.'

The ink. suppliedl to the inking drum 8 from the reservoir 14 is in turn transferred to the usual printing plate carried by the cylinder 9, through, a pair of intermediate rollers 42, which contact with a pair of rider rollers 43, adapted, to engage a plurality of form'rollers 44. In the event the operator of the machine should fail to insert a worksheet, it becomes necessary to immediately disengage the form rollers 44 from the printing plate in order to prevent the application of an excessive amount ofi'nk thereto. In order therefore that these rollers may be lifted-through the instrumentality of automatically actuated means, hereinafterparticularly described, we provide adjustable bearings 45 for opposite ends of their respective spindles 46. These bearings comprise adjustable housings 47, provided with offsets 48, having slots 49 formed thereiny within which are fitted adjustable eccentric bushings 50 adapted to be held in position by means of bolts 51, having screw threaded engagement with the side members 7. The eccentric bushings 50 are provided in order that the housings 47 may be adjusted laterally to effect an adjustment of the form rollers 44 with respect to the 'rider rollers 43. In making such an adjustment, the nuts 52, carried by the bolts 51, are loosened, and by a suitable tooltor instrument, the eccentric bushings 50 are rotated upon their respective bolts 51 to desired positions, whereupon the nuts 52 are run down into intimate engagement with the bushings 50, thereby locking them in the desired positions, and consequently locking the form rollers 44 in their correctly adjusted positions with respect to the rider rollers 43.

The bearings 45 also include adjustable stems 53, which are carried within the housings 47, and counterbored to accommodate screw-threaded Apins 54, having heads 55, adapted'to co-op'erate with nuts 56, carried by screw-threaded portions of the stems 53, for retaining the stems inV their respective positions. By the provision of the nuts 56 and the screw-threaded pins 54 it is possible toreadily adjust the form rollers 44, with respect to the plate cylinder 9 and the rider rollers 43. This adjustment is made possible by unscrewing the nuts 56 and running the pins 54 further into screw-threaded engagement with the stems -53 to effect an adjustment of the forni rollers 44 in one direction, and by unscrewing the nuts and running thel nuts 56. further down upon the scgew-threaded portions of the lstems 53 l 60 'edeto be so operated through the instrumenwhen it is desired to eii'ect radial adjustment of the dorm rollers 44 in oppositedirections. By the provision of means making possible these radial adjustments of the 5 form rollers 44, the same may be adjusted vwith vrespect to the plate cylinder 9V andthe rider rollers 43 with extreme accuracy, Ywhich is essential in machines of the type to which our invention is directed, in order 10 that a proper application of ink to th printing plate may be afforded.

Over the lower ends of the housings 47 are disposed guard. plates 57, which are secured to the side members 7 of `the frame by means of bolts 58. These guard plates are cut away to provide notches 59, adapted. to receive project-ing studs 60, which are carried by the lower ends of the housings 47 and urged radially inwardly toward the axis I ofthe plate cylinder b y means of a' plurality Voli springs 61 carried within pockets 62 formed in the guard plates. The studs 60 are adapted to normally engage the peri heral face of rotatable discs 63, which are dis- .25 posed in concentric*relationsmvith respect to the axis of the plate cylinder 9, and V6oact with a plurality of rollers 64, carried by the discs 63, in order to effect a radial displacement of the housings/L7 and a si-milar displacement of the form rollers 44,l when it is -desired to lift these rollers and thus'effect a discontinuance of the'applicationfof ink to the'plate carried by the cylinder 9. In order to electively lock the .rollers 64 in their respective positions they are providedy with grooves 65, adapted to receive retainE ving wires 66, vcarried within periphera grooves 67v formed in the discs 63. From an J inspection of Figure 4, it isl apparent that .when the discs 63 are rotated, the several rollers 64, carried by these ldiscs, are '"so f moved as to lift the bearings 45 thereby7 moving the rollers 44 out of contact with the` 'i printing plate against the `influence of thel 5 several springs 61. As'a'means for rotating the discs 63 to eiiect the desired displacement of the/ form rollers 44, vwe have provided a comparatively simple mechanism, 'hereinafter more particularly "described,

i which is adapted kto be either manually o erated or automatically operated in the a "sence of work-sheets.- e In printing machines of the class to which `our invention-belongs, it is'necessary to ap- :H55 ply a thin filml of water to the plate, carried by the plate cylinder 9, and to this end :we provide a plurality of dampening rollers 68, which lare suitably journaled at their opposite lends to movable brackets 69 adapt-v tality of, a suitable handle 70 as to move the rollers either into or out of engagement with the late carried by the plate cylinder. `It will e noted that no provision 1s 'made for Vautomatically operating 'the' brackets 69 to move the rollers 68 into or 'out of engage- .ment with the plate carried by the plate cyl- -the continued application of water from the rollers 68 to the printing platewould not prove detrimental As a matter of fact, it is desirable to keep the plate, carried by the plate cylinder, more or less dampened, in the absence of work, for the reason that if the plate were permitted to dry during the operation of the machine in the absence of work, too great a quantity of ink might'be sup lied to the plate when feeding of the wor -sheets is resumed. If, however, it is observed that too much wateris being supplied to the plate carried bythe plate cylinder, after prolonged running in the absence of work, the rollers 68 may be easily disengaged from thef printing plate through the instrumentality of the operating lever 70. As a source of water supply for'the rollers 68 we have provided a water reservoir 71 within which is arranged a fountain roller '72 adapted to\be rotated through a chain ofgears 73, operatively-connected to some suitable rotatinl part of the machine by means ofra vertic lly disposed shaft 74, carrying a horizontally disposed gear 75, which meshes with a drivingl gear 76. This driving gear is suitably connected to a relatively short shaft-77, to which is suitably connected a clutch member 78, and -upon which is loosely mounted an elongated sleeve 79, 'having atene en'd .thereof a disc` 80, to which is pivotally connected a awl 81, normally retained in theposition s own at Figure 25, by .means of a compression spring 82 which is carried within a suitable pocket 83 formed in the disc 80 and 'adapted to engage a pin 84 carried by the pawl 81 and project'ing into the pocket 83, as most clearly shown in Figures 27 and 28. .This vpawl 81 'is adapted to so, co-act with the clutch member 78 as to lock'the sleeve 79 to the shaft 77 from its interlocking engagement in the'absence of a work-sheet by a suitable mechanism hereinafter' particularly referred to,

which is adapted to be actuated either manually or automatically to-permit the shaft `77 `to rotate independently of the sleeve 79.

U on the sleeve 79 there i`s mounted a valos` llo

funder normal conditions, and free the same riab e cam'85, which is so keyed to the sleeve 79 by means-of a spline 86, as'to lock the cam 85 againstrotation with res ect to the sleeve ly thereon. The longitudinal movement of the cam 85, with respect to the shaft 77, is eifected'by means of ashaft 87, which is at one end provided with an operating knob 88 and at its other end maintained in screwthreadedengagement with a suitable bracket 89. Adjacent the screw-threaded end of the shaft 87, there is arranged a pair of collars 90, between which is tted a hub member 91, carrying aforked arm 92, adapted to operate within a peripheral groove 93, formed in the cam member 85, near one end thereof. lIt is apparent that by rotatin the shaft 87 in either one direction or the ot er a correspondinglongitudinal adjustment of the cam member 85 upon the sleeve 79 may vbeeli'ected, due to the cooperative relation betweennthe cam member 85, the forked arm 92 and the shaft 87.

The variable cam portion 94 of the cam member 85 is adapted to cooperate with` a roller 95, carried by a depending arm 96, to which is connected a hub portion 97, suitably locked to the shaft 98.

Upon opposite ends of the shaft 98 there are arranged loosely mounted sleeves 97 provided with horizontally disposedl arcuate shaped tongues 99, adapted to enter arcuate shaped slots 100, formed in depending wings'101, carried by collars 102, which are rigidly connected to the shaft 98 by means of set screws 103. The sleeves 97 are provided with upwardly projecting oscillatory arms 104 and 105 which are adapted to support an oscillating ductroller 106, which is moved alternately into engagement with the adjacent dampening roller 68, and the fountain roller`72.V It will be appreciated that,

by reason of .the cooperation between the tongues 99 and the wings 101, the roller 106 is positivelymoved into enga ement with the fountain roller 72, butV is ree to move into engagement with the adjacent -dampening roller 68, under the influence of gravity and a tension spring 107, suitably connected to the arm 105, and one of the side members 7.

Since the roller 106 is-positively moved into engagement withthe fountain roller 7 2, it becomes 'necessary toy provide a means whereby the roller 106 maybe accurately adjusted with resl ect tothe face of the fountain roller, an to this end we provide' adjustable set screws' 108, which are carried by v105, at that period in the operation of the 120 the wings 101 and project into the arcuate shaped Vslots 100. By adjusting these set` lis so moved, through the instrumentality 'means, whereby the rovllel` 106,' when reduced' in. diameter, due to constant use, may be correctly positioned or adjusted with respect to the surface of the fountain roller 72 to insurefa proper functioning thereof.

Due to varying conditions under which the machine is required to operate, it is desirable to be able to vary 'the length of time that the roller 106 may be permitted to remain in contact with the fountain roller 72, and it is' for this 'reason that the cam element 85 is provided with a variablecam portion 94. If conditions are such that the roller 106 need be held in con` tact with the fountain roller 72 only a relatively short riod, to supply a sujlicient quantity oiewater to the roller 68, which, in turn, is applied to the plate carried by the plate cylinder 9, the shaft 87 of the operating knob v88, as to so. position the cam element 85 upon the sleeve 79 that only a relatively short portion of the cam area will act upon the roller 95. If, on the other hand, it is desired to maintain 90 the-roller 106 in contact with the roller 7 2, for a relatively long period of time, the shaft 87 'is so adjusted as to so positionthe cam element 85 upon the sleeve 79 that a relatively long portion of the cam area is permitted 'to act v upon the roller 95. It

will be understood,.of course, that the longer 'the roller 106 is permitted to remain in contact with 4the fountain roller 72, the more water will be taken up by the duct roller 106, which is covered with al suitable absorbr ent material, whereas the shorter the peri-V od of contact between `the fountain roll- A er 72 and the duct yroller 106, the less will be the quantityl of water taken up `thereby. Thus, by the relatively simple cam adjusting means above described, a reliable j and accurate means by which the amount of moisture vsupplied to the plate carried by the plate cylmder may be governed to 119" a satisfactory degree.

In machines o this type, it is desirable to maintain the duct roller .106 out of contact with the fountain roller 72, in the ab` sence of work, particularly if the machine D5 is running idle for any considerable length of time, and to accomplish this, we have provided a means for discontinuing' the oscillatory movement of the 'arms-104 and machinewhen the roller 106 is in contact with the adjacent roller 68, which means comprises a trip link 109adapted to coact with the .pawl 81 -to release the same from the clutch `member 78, `thereby permitting 125.

v :65. by any suitable means, such as a head 128,

. shaft 113, which is adapted to be actuated ried y the plate manually by rmeans of a lever 114, or automatically by a suitable means hereinafter particularly described. f f

,From a consideration of Figure 25, it will appear thatthe' pawl 81 is released from its cooperative clutch member 78 only at that period in the operation of the machine when the low part Vof the cam 94 is in engagement with the roller 95, at which instant the roller 106 is in contact with then adjacent ,roller 68, regardless of whether the release iseffected manually or auto-y matically. To have the roller 106 contact -with the adjacent roller 68, upon failure to introduce work-sheets into the machine, is particularly advantageous, for the reason that such moisture as might be contained in the absorbent material of the roller 106 is gradually sup lied to the dampenin rollers 6.8, and t us the plate carc linder 9 is kept moist, so that when a work-sheet is again fed into the machine, the plate carried by the plate cylinder will consequentlytake up or receive only a suitable ,amount of printing uid.

The train of gears 73, through which the .roller 72 is driven, includes, in addition to the gears 75 and 76, hereinbefore mentioned, a relatively small ear 115, suitably connected to the shaft 77, which gear, in turn, meshes with a gear 116, journaled upon a stub shaft 117, which is carried by a wing 118. This wing -is loosely mounted upon the shaft 77 and is provided with a screwthreaded stud 119, projecting through an arcuate sha ed slot 120, formed in an extended portlon 121 of the frame member 7. By loosening a wing nut 122, carried by the stud 119, the wing 118 may be swung about the shaft 7 7 as a pivot, in order to disengage the spur gear 123, winch is ofperatively connected with the gear 1,16, rom a similar Y gear 124, carried by the fountain roller shaft 125. The gear 124 has formed therewlth a second gear 126, which, together with the gear 124, is splined to the shaft 125 by Veo means of a key 127, both. gears bein adapt- 1 ed to be moved longitudinally on t e shaft 125z in orderthat the gear 126 may be so positioned as to mesh lwith the gear 123. Uponso ositiloning the gears 124 and 126 that the lgtter named gear may mesh'with the gear. 123, the wing 118 is' moved about the shaft 77 as an axis,A thereby bringing the gear 123 into mesh with the gear 126,

118 isllocked in osition by means of t e wing nut 122, tliiereby locking the gear 123 in engagement with the` gear 126. When the gears 124 and 126 are in the position shown-in Figure 22, they are preventedl from moving in one direction carried by the shaft 125, and are prevented from moving in an opposite direction by means of a head 129 carried by the stub shaft 117. If the gears 124. and 126 are so moved as to bring the latter named gear into engagement with the gear 123, the head 129, carried b the stub shafty 119, is permitted to enter tlie space afforded between the 'gears 124 and 126,) whereby they are locked' against longitudinal movement upon the shaft 125 in either direction. With the gears meshing, as shown in Figure 22, the

fountain roller 72 is rotated at a` given rate of speed, but if the gears 124 and 126 are so moved as to bring the latter named gear into engagement with the gear 123, the

speedof rotation of the roller 7 2 will neces-` through the instrumentality of a positively acting cam 133, carried `by a horizontally disposed cam shaft 134. The abutment 131, in its operation, vis adapated to move Vthe work-'sheet 130 forward into the machine, whereupon it is gripped by a suitable gripping mechanism, not shown, which is cooperatively associated with the impression cylinder 11.

So long as these work-sheets continue to be fed into the machine, .the form rollers 44 are maintained in contact with the plate carried by the plate cylinder 9, and the impression cylinder '11 is also maintained in contact with the blanket cylinder 10, but if, for any reason, one of these Work-sheets should fail to pass into the machine, the form rollers 44 are instantly lifted out of contact with the plate and likewise the impression cylinder 11- is immediately disengaged from the blanket cylinder 10. This lifting and disengagementis effected au-l -f tomatically by means ofza trip linger 135, carried by a horizontally disposed rod 136, which is ada ted to be moved, in the absence of a work-s eet, from Ithe position shownin yFigure 18 to that vof Figure 13, by reason of a weighted trip arm v137. When the trip arm 137 drops from the position shown iii-Figure 18 to the position' shown in Figure 13, it engagesa trip lever 138, which adapted to ,coact with a cam 144, suitably connected to the cam shaft 134, whereas the boss 143, connected ,to the relatively long arm 141, is adaptedv to coact with a pairof guide fingers 145 carried by rlink 146, p-ivotally connected at its ends to a pair of ` depression fingers 147 and 148,

/which, in turn, are pivotally connected to an oscillating vlever 149.k This oscillating 'lever 1s pivotally connected to a suitable portlon of the `frame 5, .by means of a pin 150, and is provided relatively near `its free yoke 151, which is'adapted to an end with a straddle the shaft 134, intermediate the cam 144 and a grooved cam wheel 152, carrying a relatively steep cam 153, surrounded by a cam ring 154, which, with the cam 153, forms a cam groove 155.` Vithin the .cam groove 155, there isarranged a cam 'roller 156,. carried by a pin 157, which is connected withthe oscillating lever 149, relatively near its free end.

- It is apparent that, as the cam 'disc 152 rotates in the direction of the arrow, shown in Figures 13, 15` and 18, the oscillating.; lever 149 is, at its free end, moved in an arc, thereby lifting *and .lowering the `depression ngers 147 and 148. It is also apparent that the cam 144,A cooperating with the boss 142;

causes a positive movement ofthe trip. lever 138 in one direction about its pivot 139, the

lever being moved in .an opposite direction,

about its pivot l139, by means of a tensionv spring v158. If, however, a work-sheet 130 f fails to pass into the machine, the arm 13 will engage the upper end .of the trip lever 138,l when the same has been moved against the influence of the spring 158 by the cam 144, and due to this engagement of the arm 137 with the trip lever 138, the same is prep. vented -from moving under the influence of the spring 158, in which case the depression fingers 147 and 148, due to the engagement of the boss 143 with the guide iingers- 145, are locked in their` respective positions, shown in Figure 13, upon the completion of the upward movement ot the free end of the oscillating lever 149. Immediately after the cam 144 is freed from the boss 142, the camsl 153 begins to coact'with the roller 156 t0 .'x'noveuthe free end'of the oscillating membei.`

149 downwardly, in which case'the. depression finger 147 cooperates with an outwardly projecting pin 159, `carried by a rocking Y ce that shown in Figure 15, the-shaft 162 will beam 160, to lower that endo the rocking .beam 160, which carries the. pin 1595 and simultaneously lifts the opposite end ofthe vrocking beam 160, which carries asimilar outwardly projecting pin161.

Since the rocking beam 160 is rigidly connected to a horizontally disposed shaft 162, which projects 'through the side members- 7,

it vfollows that in moving the rocker arm 160 from Vthe position shown iny Figure 13Y to be slightly rotated, thereby moving the opdevice, but since corresponding levers onl both sides ofI the machine are substantially identical, it is deemed necessary to describe onl those whichbare shown in Figures 1 2. v When the foot163 is moved from the posi- 'tion shown in `Figure 1, to the position .shown in Figure 2, a bell crank lever 164 is rocked about its pivotal connection by means of a link 165 connecting one arm of the lever with thevfoot 163. Thisrocklng' move- Iment otk thebell'crank lever 164 lifts 'an operating rod 166, which is connected tothe otherv arm of the bellcrank `lever 164, and it is due to the lifting of the operating rod 166 that the several form rollers 44 are vlifted free 4from engagement with thefplate carried by the plate cylinder 9. (llo veiiect this diserating feet 163, which are rigidly connected engagement of the 'rollers 44with the plate carried by the plate cylinder 9, we provide a bell crank lever l167, which is pivotallyconneited to theside m'embei` 7. This bell crank lever is provided with a relatively short arm 168, which carries a stud169, adapted to enter a yoke 170, carried at the upper end of the operating rod '66. In order to retain the Ayoke 17() in engagement with the stud 169, we have-provided a link 171, .which is connected to. theupper end of the yoke 170,

and provided with awing172, having a slot 173 formed therein. This wing is adapted toA cooperate with a locking pin 174, to retain the rod 166 in a vertical position, 'in which position the yoke 170 is effectively locked in operative connection with the stud 169. 'If

it should be'desire'd to'disengage the yoke 170 from' the stud 169, theoperating rod 166 may be moved to and locked in the. position shown in Figure 2, in which positlon the bell crank lever 167 is adapted to be actuatedv i manually` through the instrumentality of an extended arm 174', provi-ded with an operating handle 175.

The bell crank lever 167,. adjacent the relatively short arm 168 is provided with aseoond relatively short arm 175', which, in turn, is connected to 'the concentric disc 63, by means of an interposed link 176. By the rovision'of'the operating rod 166 and the ellcrank lever 167, itisobvious that a positive a v ing the disc -63 from the position .shown 1n eliable'means is a-Eorded. for mov- Figures 'l1-and 4 to theV 'position shown in Figure '2, when the' f eet 163 are moved from the position shown 1n Figure 1 to the position shown in Figure 2, in the absence of a work-sheet 130. y moving the disc 63 vfrom 4. in Figure 2 is the same as that the position shown in Figures 1 and 4 to the position shown in Figure 3, the rollers 64 are so moved as to engage the studs 60, and liftthe housings 47, thereby moving the form rollers 44 out of engagement with the plate carried by theI plate cylinder 9.

At t'he same time the operating rod 166 is moved upwardly to disengage the form'rollers 44 from the plate carried by the plate cylinder 9, the impression cylinder 11 is disengaged from the blanket cylinder 10. To

eiect disengagement 'of the impression cylinder 11 from the blanket cylinder 10, We provide eccentric journals 177 for the impression cylinder 11, one of Which journals is shown in Figure 2. By suitably rotating these journals, in the absence of a Worksheet 130, it is obvious that the impression cylinder 11 may be disengaged from -t'he blanket cylinder 10, and to effect this rotation We connect the journals 177 with the feet 163 by means of interposed links 178. Thus, it is obvious that when the foot 163 is moved from the position shown in Figure 1 to the position shown in Figure 2, the jourvnals 177 will be so moved as to bring about the desired separation of the blanket and impression cylinders 10 and 11, respectively.

Since it is not desired to automatically disengage the blanket cylinder 10 from the plate cylinder 9, when a Work-sheet'fail's to pass into the machine, We have so designed a -throw-out mechanism for the blanket cylinder 10 that the same may be disengaged from the plate cylinder only by manual operation. This throW-out mechanism shown at the oposite side of the machine, and comprises a ll crank lever 179, which is connected toa horizontally disposed shaft 17 9 and includes a pair of relatively short arms 180 and 181. The arms 18() are, by means of links 182,

operatively connected -to eccentric bearings 183, which are carried upon opposite, sides of the machine for supporting the lblanket cylmoving the bell crank levers' inder 10. By 17 9through the instrumentality 'of an operating handle 184, from the position shown in Figure 1 tothe position shown in Figure 2, the eccentric bearings 183 are slightly rotatedfthereby moving the blanket cylinderv 10 slightly out of contact with the plate cylinder 9.

Inasmuch as it is desirable to vautomatically move theblanket cylinder l() into engagement with the plate cylinder 9, upon the insertion of a Work-sheet'130, We have provided a link 185, which is pivotally connected at one end to the upper end of the link 17 8.,A

This link 185, at its opposite end is provided With a head 186 having a slot 187 formed therein, which isadapted to receive a pin 188, carried by the relatively short arm J181 o'f the bell crank lever 179.

When the link 185 is in its lowermost position, and the operating lever 184 is depressed, as shown in Fi ure 2, the pin 188 will be so disposed within the slot 187 that a movement' of the foot 163 from the position' shown in Figure 2 to the position shown in Figure 1 will cause the operating lever 184 to automatically move from the position shown in Figure 2 to the position shown 1n Figure 1, thereby extending the link 182, which causes the ecceritric bearing 183 to so move that the blanket cylinder 10 is urged into contact with the plate cylinder 9. From the construction and arrangement of the bell crank lever '179 and the interposed link 185, it is apparent that the only period during which the blanket cylinder 10 might be dis-i p the other hand, it is desirable, under all conditions, incident to the feeding of work into the machine, to maintain the blanket cylinder 10 in engagement With the plate cylinder 9, and from the construction and arran ement .of the various elements included in t' e control mechanism forthe blanket cylinder 10, it Will appear that the desired engagement of this cylinder. with the plate cylinder is insured upon the introduction of a single sheet into the machine after the blanket cylinder 10 has. been disengaged from the plate cylinder 9, vvhich disengagement is made possible, as. above mentioned, only when the foot 163 has been moved to the position shown in Figure 2, as a result of failure to introduce the Work intol the machine.v j

In machines of this type, it is especially desirable to discontinue the application of the printing fluid to the inking drum 8, upon v the failure to introduce a Work-sheet into the machine, and While We have described a manually operated means for effecting a dis- .continuance of the applic tion of printing lfluid, it is particularly advantageous to be able to automaticall `discontinue-the application of printing iyhid upon the failure Vto introduce a Work sheet into'the machine.

.In order that the inking mechanism hercinbefore described may be automatically controlled, We have provided the lever 30 with an extension 189, carryingl a stud 190,

which is adapted to engage a link A191, pivotally connected to an oscillating arm 192. The/oscillating arm 192 is pivotally connected, at one end, to a suitable support '193 and .control of the inking mechanism,

at its other end to an actuating rod 194, which, in turn, is connected to a relatively short arm 195, adapted to befactuated by the bell crank lever 167. The'link 191 may be lifted free from the stud 190, when it yisedesired to control the inking mechanisnfmanually, but in order to facilitate an automatic the link 191 is permitted to assume the position shown in Figures 1 and 2, in `Which position a direct connection isaforded between the bell crank lever 167 and the operating shaft 29. By the provision of the rod 194, and its several associated cooperative elements, it is apparent that when the operating rod 166 is lifted, due to the movement of the foot 163, from the position shown in Figure 1 to the position shown in Figure 2, the relatively short arm 192 will be so moved asto partially rotate the'shaft 29, thereby causing the disengagement oi the pawls 20 and 23 from their respective cams 34 and 35 through the instrumentality of the Enger 27.

As above mentioned, in describing the operation of the manually operated controlled mechanism for the inking roller 15, a disengagement of the pawls 20 and 23` from their respective A'ratchet wheels will cause4 the inking roller 15 to remain inoperative so long as these pawls are maintained vin their disengaged positions. Upon the introduction, however, of a work-sheet into the machine, the pawls 20 and 23 will be permitted to drop to their normal positlons l and engage thelr respective ratchet Wheeler 34 and as aresult of the Imovement of the foot'163 from the position shown in Figure,

2 to the position shown in Figure 1, which movement is automatically brought about through the instrumentality of thetrip mechanism, including the depression fingers 147 and 14s.

It has been hereinbefore mentioned that the oscillating duct roller 106 may be rendered inoperative manually, through the instrumentality of the releasing `link 109, which, when operated through the shaft 113, serves to disengage the pawl 81 :from the clutch member 7 8. It is desirable, however, under ordinary conditions, to releaseA lthe awl 81 automatically upon the failure to `introduce a Work-sheet intocthe machine, so

that the roller 106A will lie normally against the adjacent dampening roller 68, While the machine is running free, and to accomplish this automatic release, we provide a depending arm 196., which is connected directly to the shaft 113. This arm is normally Vconnected by means of a link 197 to an arm198, which is adapted to be moved 'upon the operation oi the bell crank lever 167. The link -197 is bent, as shownat 199, to engage a pin 200, carried by the arm 196, so that when the liik`197 is moved in vone direction or the cent dampening roller 68, this being desir-v able for the reason that it is advantageous to continue the application ofwater to the i plate carried by the plate cylinder, under certain conditions, even in the absence of a work-sheet. If, for any reason, it should be desired to discontinue the automatic'control of the roller 106, such may be accomplishedl byl lifting the link 197 out of engagement with the pin 200, in which case the link 197 may bejmamtained out of engagement with the pin 200'by means of an arm 201, pivotally connected to the upturned end. of the link 197 and adapted to be' so `held as to maintain the 'link 197 in it's lifted position by means of a keeper 202, suitablyconnected `to the side member 7.

1t might `be mentioned that to enable the .operator to readily determine whether or not the roller duct 106 is rendered inoperative or is functioning in an oscillatory manner, when the link 197 islifted out of engagement with the pin 200, to permit the .roller to be manuallyl controlled, 'We have provided the lever 114 with a'pointer 203, which, when registered with the word On indicates that the depressing link 109 is so positioned as to permit the pawl 81 to be maintained in locking engagement with the clutch member 78, in which engagement the roller 106 is oscillated during the operation Vof a machine,` it bein moved alternately into contact with the adjacent roller 68 and the fountainroller 72. If, on the other hand, the pointer 203 registers with the word' Ott the operatorwill 'understand that the depressing link 109 is so positioned as to release the driving engagement be- 'tween the cam member 85 and-the shaft 77,

thus permitting the roller 106 to maintain with the adjacent a position in contact On and Off and the provision of the pointer 203, the operator is enabled, at a glance. to determine in which direction to move the leve-r 114 to manually bring about a desired condition of the roller 106; that is to say, l1e .is-enabled to readily determine Whether to. move the lever to the'right or j left to, cause the roller 106' to oscillate or remain constantly in contact with the adjacent roller '68.

In applying new blankets `to the blanket the surface of the blanket cylinder, with# cylinder, in machines of this type, it is customary to place the blanket around the cylinder, and then run the machine for a s ort period, after which the operation of the machine is discontinued to enable the blanket, which has been stretched more or less, due to contact between the impression cylinder and the blanket cylinder, to be drawn more tightly around the blanket cyl inder. This intermittent operation of the machine is carried out with the blanket c linder in contact with der a suiiicient'number'of times to adequately stretch the blanket,

e maintained in anintimate relation with wrinkling or puckering, due to during the norout undue further excessive stretching mal operation ofthe machine.

naaf

l In order that the machine embodying our invention may be so operated in the absence ofy work-sheets as to maintain the blanket sion cylinder 11, we have provided a means or preventing engagement ofthe klocking finger 137 with the upper end of the trip lever 138, under all conditions, so that the trip lever 138 may be free to oscillate about its pivot 139 in the same manner as if worksheets 130 were being fed through the machine continuously. The means which we employ for retaining the finger 137 out of engagement with the trip lever 138 is shown most clearly in Figure 19,.and comprises a cam 204 rigidly secured to an operating shaft 205, which is provided With an opery ating handle 206, having apointer 207 associated therewith. The cani 204 is adapted to be actuated through the shaft 205, and

is provided with a series of indents 208, 209 and 210, which are adapted to cooperate with a spring pressed plunger 211 carried Within a suitable housing 212, attached to one of the frame members 7. The spring pressed plunger 211, when seated within the indent 208, serves to retain the cam 204 in its verticaldotted line osition, and when cooperatin with the in ent v209, qthe cam 204 is hel in its full line position, shown in Figure 19. If'it is desired to retain the cam -204 in a horizontal position,so as to engage a lug 213, carried by the trip lever 138, the shaft205 is so moved as to permit the plunger 211 to enter the indent 2 10.

With the shaft 205 so 'positioned' as to maintain the cam 204 in the dotted line position shown in Figure 19, the trip arm 137 is retained under `all conditions in the position shown in Figure 18, which position corresponds to that which the trip arm would occupy inthe presence of a worksheet 130. 1t follows, therefore, that when the camv204 is retained in its dotted line position, shown in Figure 19, the foot 163 will, under all conditions, be maintained vthe impression cylin-A so that the same will cylinder in contact with the impres- .A

in the position shown' in Figure 1, in which position the blanket and impression cylinders 1 10 and 111, respectively, are retained in surface engagementY with each other. The machine may therefore be operated for any desiredlength of time, and yet maintain a positive engagement between the blanket cylinder 10 and impression cylinder 11', even in :the absencef work-sheets, thus enabling the operator to easily stretch a blanket newly applied to the blanket cylinder 10.

Under normal operating conditions, the shaft 205 is so positioned as to maintain the cam 204 in its full line position, shown in Figure 19, in which. position the trip arm 137 is adapted to `engage the upper end of the trip lever 138 to retain the same in the. position shown in Figure 13, whereby an automatic operation of the foot 163 -is accomplished, as hereinbefore described, to move the various cooperating elements of the machine into their respective operative positions, shown in-Figure 2. On the other hand, the trip arm 137 is free to move, upon the resumption of the printing operations, from its position shown in Figure V13 to its position shown in Figure 18,

tofacilita-te an automatic movement of the l various cooperating elements-of the machine from their respective positions shown in Figure 2 to their respective normal operating positions shown in FigureI l.

Under certain conditions, it might be de` sirable to retain the several elements of the machine in .their respective inoperative positions, shown in Figure 2, and in order to positively retain the several elements of the machine in their respective inoperative po#I sitions, the cam 204 may be so moved through the instrumentality of the shaft 205 as to permit the plunger211 to enterv The cam,

so positioned as to engage' the lock 213, carried by the trip lever 138, the operation of the machine will be such that the various operative elements of the machine will be maintained in their respective inoperative positions, in which case the blanket cylinder 10 is retained in a spaced relation with re;

spect lto its cooperating impression cylinder 11, so'that any number of work-sheets may jee-tion to printing operations.

In'order to enable the operator to deter- `mine any one ofthe three positions to which the lever 206 must be moved, to produce a given position of the cam 204, we have inbe passed through the machine without sub- 1 25 Lacasse dicated two o the directions in which the pointer 207 must point by the abbreviations Imp and Auto.'which are respectively abbreviations of the words Impression7 and Automatic rlhe third position to which `the pointer must point to produce a given position of the camy 204 is indicated by the word Trip It is apparent that when the pointer 207 registers with the abbreviation Imp the cam QOL is maintained in its vertical position. in which positionthe blanket and impression cylin- A ders 10 and 11, respectively, are maintained in an intimate surface engagement. When the pointer 207 registers with the abbreviation uto the operator will readily understand that thecam 204 is maintained iu its full line position, shown in Figure 19,

in which position the machine is permitted to operate in every particular in a normal manner. The operator will also appreciate that by moving the lever'206 to bring the pointer 207 into registration with the word F'lripf the cam 204 will be permitted to assume a horizontal position, in which position the trip lever 138 will, under all conditions, be retained in its position shown in Figure 13, in which position the blanket and impression cylinders 10 and 11 are maintained ditions.

We claim:

1. A printing machine having a plate cylinder adapted to carry a printing plate, a source of printing fiuid supply, an inking drum, an inking roller adapted to transfer printing fluid from said source o'f supply to said inlring drum, a pair of ratchet wheels cooperatively associated with said inking roller, a pair of pawls adapted to cooperate with said ratchet wheels, means for oscillatingsaid pawls in. a given path whereby said inking roller is intermittently actuin a spaced relation under all conated, and means yieldably connected with said pawls for liftingthe same out of engagement with their' respective ratchet wheels.

2. A printing machine having a plate cylinder adapted to carry a printing'plate, a source of-printing Huid supply, an inlging drum, an inking roller adapted to transfer printing uid from -said source of supply toA said inking drum, a pair of ratchet wheels cooperatively associated with said inking roller, a pair of pawls. adapted to cooperate with said ratchet wheels, means for oscil lating said pawls in a given path whereby said inking roller is intermittently actuated, means yieldably connected with said pawls for lifting the sameout of engagement with their respective ratchet wheels, and auto-` maticallyV actuated means for effecting an operation of said pawl lifting means upon the failure to introduce a work-sheet into the machine.

.lar adjustment -is bron said plate to interrupt the application ot printing fluid thereto, and automatically ac- -tuated means for actuating said cam upon the failure to introduce a work-sheetinto the machine whereby said supports arev ,moved and said rollers are displaced' with respect to said plate cylinder.

4. A printing machine having a plate cylinder adapted to carry a'printing plate',v a pluralityof rollers adapted to normally -contact with said plate and supply printing fluid-ithereto, supports for said rollers, said supports' having slots formed therein, eccentric elements within said slots, said eccentric elements being adapted to be so moved as to adjust said supports with respect to each other whereby a similar .adjustment is brought about between said '\rollers, means tending to retain said supportsin such positions as to permit said rollers to intimately contact with said plate, and means for so moving said supports as to displace said rollers 'withirespect to said cylinder wherebythe application of printing iuidthereto l is discontinued.

5. 'A printing machine having a plate cyl; inder adapted tocarry a printing plate, 'a

' lurality of rollers adapted to'normally contact with said plate and su ply printing;

fluid thereto, supports for sai rollers, said n 4 supports having slotsv formed therein, eccentric elements within vsaid slots, said ec.- 'centric elements adapted to be so moved as to effect an adjustment of said supports with respect 'to each other whereby a simiht about between said rollers,- means ten ing .to retain said supports in such positions as to permit said rollers to intimately contact with said plate, and automatically actuated means for so moving saidsupports as -to free said rollers from engagement with said plate upon the failure to'introduce a Work-sheet 20 into the machine.

6. A rmtmg machine having a.Y plate cyl` inderfav apted to carry a printing plate, a

fountain roller adapted to be rotated and carry upon its surface a'fihn of moisture'. 25`

adapted to transmit a dampening roller` moisture to said plate, an intermediate roller fountain roller, means for moving said interadapted to be so movedv as to alternately l contact with said dampening roller and said .A W

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