US2310363A - Printing press dampening roll control - Google Patents

Description

Feb. 9, 1943.

G. GOEBEL PRINTING PRESS DAMPENING ROLL CONTROL Ofiginal Filed M. 1, 1936 6 Sheet-Sheet 1 I IHVCHf DPS George Goebel,

Hz (be A. Wi/ckehs.

Feb. 9, 1943. G. GOEBEL PRINTING PRESS DAMPENING ROLL CONTROL Original Filed Oct'. 1, 1936 6 Sheets-Sheet 2 Feb. 9, 1943-. G. GQEBEL 2,310,363

I PRINTING PRESS DAMPENING ROLL CONTROL I Original Filed Oct. 1, 1936 6 Sheets-Sheet 3 w my aw Feb. 9, 1943.

G. GQEBEL PRINT-ING PRESS DAMPENING ROLL GONTROL' Original Filed Oct. 1, 1936 6 Sheets-Sheet 4 ilfEEll'i... IIIII I IIIIllllllllllllllill Feb. 9, 1943.

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Feb. 9, 1943. G. GOEBEL PRINTING PRESS DAMPENING ROLL CONTROL Original Filed Oct. 1, 1936 6 Sheets-Sheet 6 Patented Feb. 9, 1943 PRINTING PRESS DAMPENING ROLL CONTROL George Goebel, deceased, late of Baltimore, Md., by Helene Goebel, administratrix, Baltimore, Md., and Eibe A. Wilckens, Baltimore, M11, assignors to Crown Cork & Seal Company, Inc., Baltimore, Md., a corporation of New York Original application October 1, 1936, Serial No.

1940, Serial No. 333,253

(Cl. -10l147) 4 Claims.

The present invention relates to a printing press dampening roll control, being a division of the application for Printing presses of George Goebel and Eibe A. Wilckens, Serial No. 103,592, filed October 1, 1936, issued June 25, 1940, as Patent No. 2,205,720.

An important object of the invention is to provide a press which will be capable of high speed production of uniformly printed sheets, all of the mechanisms of the press being so designed that sheets to be printed or lithographed will be properly fed between the cylinders and the cylinders maintained in proper position for efficient printing action.

A further object of the invention is the provision of simple and enicient means to control the continuance of the dampening water supply to the plate cylinder according to whether a sheet is delivered to the printing couple.

Another object of the invention is to provide an improved mechanism for operating the dampening water feed to the plate cylinder, this mechanism being particularly intended to permit the water feed to be readily adjusted through line stages over a wide range.

A still further object of the invention is to pro vide a selectively controllable operating means for a water ductor to permit the frequency of movement of the same to be readily varied.

Other objects and advantages of the invention will be apparent from the following speci fication and drawings wherein,

Figure 1 is a side elevation of the press;

Figure 2 is a rear view of the lower portion of the press;

Figure 3 is a longitudinal vertical sectional view on the line 33 of Figure 2;

Figure 4 is a longitudinal vertical sectional view taken on the line 4-4 of Figure 2;

Figure 5 is a detail sectional view on the line 5--5 of Figure 4 showing the dampening roll cam mechanism;

Figure 6 shows the cams of the dampening roll cam mechanism;

Figure '7 is a vertical sectional view on an enlarged scale showing the sheet trip means and the mechanism for controlling the positioning of Divided and this application May 3,

receives ink from the ink form rollers generally designated by the numeral 40. Beneath the plate cylinder there is provided the intermediate or transfer cylinder 4| which is provided with a transfer blanket to receive the impression from the plate cylinder 38 and print it upon a sheet as the latter passes through the printing couple formed by the transfer cylinder 4i and the lower or impression cylinder 42. The sheet to be printed upon is fed from the feed table 43 by suitable mechanism so that in the normal operation of the press as described in said original application Serial No. 103,592, at a predetermined moment in each rotary movement of the transfer cylinder 6|, as described in said original application. However, assuming that a; pair of manual valves 49 and 50 also included in the fluid flow circuits are in their normal position for the running of the press, should no sheet be on the feed table at the proper moment, the trip finger 46 will remain in the upward position shown in Figure 1, with the result that the operation of the trip mechanism 41 will be varied and the automatic valve mechanism 48 will be actuated to so change the fluid pressure flow that impression cylinder 42 will drop out of contact with the transfer cylinder ll, thereby preventing the transfer cylinder from printing upon the impression cylinder, as it would do if the two cylinders were left in normal position with no sheet passing between them.

The roll dampening mechanism of the press includes an oscillating ductor roll 5|, the frequency of the oscillations of the ductor roll being adjustable through a tappet mechanism 52. The speed of rotation of the fountain roll of the dampening mechanism is controlled through a variable frictional gear drive 53 shown in Figure 2.

In the following description of the press, the front is regarded as the feed table end and the rear is regarded as the side from which printed sheets emerge.

The press includes a base 60 having side plates extending upwardly therefrom, the left hand side plate being designated 6I and the right hand side plate being designated by the numeral 62. Power is provided from a motor 63 which acts through a belt or the like 64 to drive a large pulley 65 fixed to a shaft 66 Journalled in the right hand side plate 62. The shafts 10 and H of the transfer cylinder 4| and the plate cylinder 38, respectively, are driven from shaft 66 as described in said original application. The plate cylinder 38 is journalled in the upper portion of the side plates of the press and has no vertical movement but the shafts 69 and 10 of the impression and transfer cylinders, respectively, are Journalled in boxes 12 and 13, respectively, vertically movable in the side plates .of the press through the mechanism described in said original application.

The dampening mechanism H (Figure 1) of the present press is of the usual construction and includes the ductor roll 5I which transfers water from the fountain roll I I6 to a form roller II1 which in turn places the water upon a pair of dampening or water rolls H8. The mechanism for oscillating the water ductor roll 5l comprises an arm at each end of the -press, the arm at the left-hand end being in the form of a bell crank II9, one arm of which supports the adjacent end of the roll shaft and the other arm of which has a rod I20 extending downwardly therefrom, the lower end of the rod being guided in a sleeve I2I (Figures 4 and 7) formed integrally with a bracket I 22 fixed to the side frame 6| of the press. The lower end of rod I20 bears on the upper end of a rod I23 having its upper portion guided in a slot I24 in bracket I22 for a purpose hereinafter set forth. The lower end of rod I23 is connected to a bar I29 pivoted on a stud I30 fixed to the side frame 6|. The rod I 23 is preferably connected to the bar I29 adjacent the free end of the latter, the free end of the bar being joined by a link I3I to a rocker arm I32 pivoted on a stud I33 fixed to a bracket 52a within the side frame 6i. The opposite end of the rocker arm I32 is provided with a roller I 34 adapted to contact with a cam mechanism 52 comprised of a plurality of cam rings I35 axially spaced upon and fixed to a shaft I36 journalled in bracket 52a. The shaft I36 is driven by means of a pinion I31 (Figure 4) fixed to its inner end and which meshes with a smaller pinion I38 on a shaft I39, shaft I39 having a sprocket I40 fixed thereto which is driven through a chain I4I from a sprocket provided on a sheet trip cam shaft I42, the drive of which will be hereinafter described.

Four of the cam rings I35 are preferably provided upon sheet I36, as shown in Figures 5 and 6. As shown in Figure 6, one of the cams is provided with one rise I46, the next one may be provided with two rises arranged diametrically opposite, and the third and fourth rings I 35 may be provided with three and four rises, respectively, equidistantly spaced about the rings. Figure 5 illustrates how the roller I34 is mounted on a pin I41 mounted in spaced arms at the free end of arm I32. Roller I34 is fianged and by sliding this roller upon the pin I41, it may be positioned opposite the desired cam ring I35, being held in that position by its flanges. This selective positioning of the roller I34 will control the number of rocking motions which may be given the ductor roll 5I through the rocker arm and rods I20 and I23 upon each rotation of the press cylinders. The roller I34 is held in contact with the cam mechanism 52 by a spring I48 (Figure 4) positioned between the free end of rocker arm I32 and the press base.

A readily adjustable mechanism for varying the amount of water transmitted to the plate cylinder is thus provided.

The amount of moisture placed upon the plate cylinder may be further regulated by varying the speed of rotation of the water fountain roll H6. This roll is driven through a shaft I50 (Figs. 1 and 3), the shaft being geared to the roller through any suitable gearing, not shown. The lower end of shaft I50 is provided with a worm wheel I 5| meshing with a worm on a horizontally extending shaft I52 as shown in Figures 2 and 3 journalled in the right hand side frame 62 and in a standard I54. Near its inner end the shaft I52 has a relatively large friction 'disc I55 fixed thereto with which a friction driving roller I56 is adapted to engage, the roller I56 being arranged with its axis at right angles to the axis of the disc I55 and also engaging a driving disc I51 fixed to a shaft I58 iournalled in standards I59 to extend parallel to shaft I52.

It will be apparent that when power is supplied to shaft I58, roller I56 will be rotated causing the driven disc I55 to be likewise rotated and thereby rotating, through shafts I52 and I50, the water fountain roll H6.

The roller I56 is Journalled on a bracket I6I depending from a rod I62 extending parallel to and between the faces of the discs I55 and I51, the rod I62 being slidable in standards I63. The shaft I 62 is provided with rack teeth I65 adjacent its forward end which teeth are adapted to be engaged by a pinion I66 fixed to a shaft I61 having its lower end journalled in an extension of one of the standards I63 and its upper end joumalled beneath the feed table 43. The upper end of the shaft I61 is provided with a worm wheel which engages a worm as indicated at I68 on a horizontally extending shaft I69 extending through the left hand side frame 6| of the press, the shaft I69 there being provided with a hand wheel I10 through which it may be rotated by the operator. It will be obvious that rotation of the hand wheel I10 will be transmitted to the gear I66 to slide the rod I6I in its bearings, thereby varying the position of the roller I56 with respect to the axes of the friction discs I 51 and I55. The speed of rotation of the water fountain roller I2I may thus be regulated to a very fine degree.

The driving friction disc I51 is rotated through a spur pinion I15 on its shaft I58 and. which meshes with a larger spur pinion I16 on a shaft I11, the shaft I 11 carrying a smaller herringbone pinion I18 which is driven by a larger gear I19 on the sheet trip cam shaft I42, gear I19 being driven by a herring-bone pinion I80 on a stub shaft I8I carried in the side frame 62. pinion I80 also being in engagement with and driven by the herring-bone gear 68 on the impression cylinder shaft 69.

In order to cause the impression cylinder to be dropped from the transfer cylinder in the event that a sheet is not presented upon the feed table at the proper moment and also to control the position of the dampening roll, the mechanism hereinafter described is provided.

As best shown in Figures 1 and 4, the sheet trip finger 46 is fixed upon a shaft 345 extending to the left side frame of the press and having a latch 346 extending rearwardly therefrom within and adjacent the side frame 6|. As best shown in Figure '7. a trip lever 341 pivoted on the shaft I30 is provided at its upper end with a detent 348 arranged to cooperate with the latch 346 in a manner hereinafter set forth. Trip lever 341 is bifurcated at the shaft I30, one arm 349 being provided with a roller 350 arranged to bear upon a trip lever cam 35I fixed to the main cam shaft I42. The trip lever 341 is urged to the left by a spring 352 having one end fixed to the upper end of the lever and the other end suitably connected to a fixed point on the press frame, so that the roller 350 is thereby held in close engagement with the cam 35I. The other arm 353 of the trip lever has a link 354 pivotally connected to its outer end, the lower end of the link being pivotally connected to one arm of a bell crank 355 which bell crank is pivoted upon a rod 356. The other arm of the bell crank 355 is connected by a link 356 with a second link 35!! at a point mid-way of the latter. The ends of the second link 359 are pivotally connected to pusher arms 360 and 36I, respectively, extending upwardly from the respective ends of a rocker arm 362, which rocker arm is pivoted intermediate its ends upon the housing 363 of automatic valve mechanism 48.

The upper ends of the pusher arms 360 and SH are intended to receive a roller 365 carried at the outer end of a cam follower lever 366 pivoted on the rod 356 and having a spring 361 connected to its opposite end to draw that end downwardly and thereby hold the roller 365 in contact with a pusher arm cam 366 fixed to the cam shaft I42.

The operation of the structure described above is as follows: The trip finger 46 is normally held in the tilted position shown in Figure 4 by the weight of the latch 346 but will be moved to the horizontal position shown in Figure 7 when a sheet upon the feed table is in position to bear upon the trip finger. At the moment that a sheet should be upon the feed table for delivery to the printing couple in the normal operation of the press, the upper end of trip lever 341 will be in the right hand position shown in Figure 9 by reason of the fact that the rise 35Ia of trip lever cam 35I will at that moment be beneath its arm 349. Arm 353 of the trip lever will there fore be in the position shown in Figure 9. bell crank 355 will be swung to the left and the pusher arms 360 and 36I will be swung to the left as shown in Figure 9. A sheet being present upon the trip finger 46, the finger will be in the position indicated in Figure '1 and the latch 345 will be up and out of the path of movement of the trip lever 341. Continued rotation of the trip lever cam 35I will bring its dwell 35Ib beneath the roller 350 of arm 349, with the result that the upper end of the trip lever 341 will swing to the left hand position shown in Figure 7. This swinging movement of the trip lever will draw the bell crank 355 from the position shown in Figure 9 to the position shown in Figure 7, pulling the link 358 to the right from the position shown in Figure 9 to that shown in Figure 7, thereby positioning the pusher arm 360 beneath the roller 365 on cam follower lever 366. Until this moment, the dwell 3681: of pusher arm cam 368 has been opposite the roller 365 but immediately the trip lever 341 and bell crank 355 have been positioned as described above, the rise 368a of pusher arm cam 368 will move opposite the roller 365, forcing the roller and the cam follower lever 366 downwardly against the action of spring 361 so that the roller will be seated in the socketed upper end of pusher arm 360.

Although the pusher arms 360 and 36I have swung back and forth on their pivots on the rocker arm 362 during the foregoing action, the position of rocker arm 362' (with its right-hand or forward end up) has not been changed because the only downward pressure exerted by pusher arm cam 368 has been through pusher arm 360, connected to What was already the lower or left-hand end of the rocker arm.

In the event that no sheet is present upon the feed table 43 at the proper moment,'that is, at the moment that trip lever 341 begins to swing to the left from the position shown in Figure 9, the trip finger 46 will remain in tilted position as shown in Figure 8. Because of this, when the trip lever 341 begins to swing to the left, its movement in that direction will be stopped at the position shown in Figure 8 by the engagement of detent 348 with latch 346. The roller 350 on trip lever 341 will thereby be held out of engagement with trip lever cam 35I and the pusher arm mechanism will be held towards the left (Figure 8) so that the pusher arm 36I will remain in the path of movement of cam follower roller 365. rotated sufiiciently far to bring its rise 368a against the roller 365. roller 365 will thereupon be moved downwardly into the socketed upper end of pusher arm 36I, causing the rocker arm 362 to be swung in a clockwise direction to the position indicated in Figure 8, thereby changing the position of the automatic valve mechanism 48 in the manner set forth in said original application Serial No. 103,592 to cause the impression cylinder 42 to drop and the ink form rollers 40 to move away from the plate cylinder.

On the next cycle of operation of the trip lever 341, this lever will be swung slightly to the right from the position shown in Figure 8 by reason of the fact that in the first stage of the cycle the rise 35Ia of trip lever cam 35I will come beneath the roller 350. The latch 346 of trip finger 46 will thus be momentarily released from the detent 348 and if a sheet is then placed upon the feed table 43, the trip finger will be depressed and its latch moved upwardly. As a result, the trip lever 341 will be free to swing to the left or in a counter-clockwise direction on its axis I30, drawing the pusher arm 360 to the left to the position shown in Figure 7. When the rise 368a of pusher arm cam 368 comes in contact with the cam follower roll 365, the pusher rod 360 will be pressed downwardly, causing the rocker arm 362 to be rotated in a counter-clockwise direction from the position shown in Figure 8 to that shown in Figure '1. Because of this, the position of the valves of valve mechanism 48 will be reversed as described in said original application, with the result that the impression cylinder 42 will move up against the transfer cylinder and the form rolls 40 will return to contact with the plate roll.

It will be understood from the above that in the normal running of the press, with a sheet being positioned at each proper moment upon the trip finger 46, the trip lever 341 will cause the pusher arms 360 and 36I to be swung on their pivots on the rocker arm 362 and from the position shown in Figure '1 to that shown in Figure 9, and the reverse. but without changing the position of the rocker arm 362, any change in position of the rocker arm depending upon which pusher arm is in alignment with the cam follower roller 365 when the rise 368a of cam 368 moves into contact with that roller.

When the pusher arm cam 368 has In order to prevent the trip finger 46 from aifecting the movement of trip lever 341 under certain circumstances, a manual contro1 cam 310 (Figure '1) is arranged for rotation into the path of movement of these two elements, cam 310 being fi'x ed to a stub shaft 3" journalled in the side frame 6| of the press and having an operating handle 312 fixed to its outer end, which handle is provided with a pointer to cooperate with a dial plate on the side plate of the press. A spring stop member 313 cooperates with indentations on one surface of the cam to hold the cam in adjusted position.

Cam 310 includes a flat surface 314 which, during the normal operation of the press, when operating handle 312 and the cam 318 are in intermediate position shown in Figures 1 and 4, is just below the lower end of the path of movement of a lateral extension 315 of latch 346, permitting the latch to swing downwardly far enough to engage detent 348 should no sheet be present upon the feed table 43 at the proper moment.

If it is desired to lock the trip finger 46 in downward position so that it will lie fiat upon the feed table 43 regardless of whether a sheet is positioned upon that table, the operating handle would be moved in a counter-clockwise direction (Figure l) thereby swinging the outer end of the fiat portion 314 of cam 310 upwardly and beneath the plate 315 on latch 346, holding the latch up and the trip finger 46 down. In this position, the trip lever 341 will move backwardly and forwardly without contacting with the latch.

In some instances, it is desirable to lock the trip lever 341 to the right so that it may not swing into contact with the latch 346. Such operation is obtained by turning the operating handle 312 to its limit position in a clockwise direction, at which time the outer end 316 of the cam 310 will contact with a lateral projection 311 on the trip lever 341, holding that lever in its extreme right hand position and so that its arm 349 cannot contact with the trip lever cam 35I. With this setting, the trip lever 341 will not swing and therefore the valves of the automatic valve mechanism 46, if they were at the position shown in Figure 8, will not be changed from that position, or, if at their other position, will move to the position shown in Figure 8.

The feed of dampening water to the plate cylinder 38 will also be discontinued by the action of the sheet trip mechanism resulting from the lack of a sheet on the feed table and the resultant clockwise swinging of rocker arm 362. This throw-out of the dampening roll will be due to the fact that (as shown in Figure '7) the right hand end of rocker arm 362 has a link 319 connected thereto, the upper end of link 319 being joined to one arm of a bell crank 380 pivoted on a cross rod 382 extending beneath the feed table. The opposite arm of bell crank 380 has a pin 383 extending laterally therefrom upon which normally bears the notched end 384 of a trip 385 which trip is pivotally carried adjacent the upper end of the lower rod I23 included in the connection to the water ductor roll 5I. When the rocker arm 362 is moved from the position shown in Figure 1 to that shown in Figure 8, and assuming that trip 385 is in the position shown in Figure 9, the bell crank 380 will be swung in a counter-clockwise direction, causing its pin 383 to press the trip 385 to swing the lower rod I23 to the left, as shown in Figure from the water ductor operating cam 52 to the water ductor roll 5|. The swinging movement of rod I23 to the left will be limited by the slot I24 in bracket I22 in which its upper end moves. The water ductor roll is so arranged that when the operating connection has been broken, it will fall rearwardly (to the left in Figure 1) against the water cylinder I I1, holding the upper rod section I20 in downward position.

In order to permit the continuance of operation of the dampening mechanism to be manually controlled, a cam 390 is provided adjacent the rod I23 as shown in Figure 7, cam 390 being fixed to a stub shaft 39I journalled in the side frame 6| of the press, the shaft 39! having an operating handle 392 fixed thereto as shown in Figure 1. Cam 390 is provided with a. laterally projecting pin 393 and a rise 394. A spring latch member 395 is positioned adjacent one surface of the cam to engage notches therein to hold the cam in adjusted position. When the press is in normal operation, the operating handle 392 will be so positioned that a pointer provided thereon will be in alignment with a left-hand reading on a cooperating dial and the cam 390 will be so positioned that the water ductor roll will be normally operated but will be subject to discontinuance of operation because the latch'385 will be in the position shown in Figure 9 and in the path of movement of pin 383 on bell-crank 380. As described above, should no sheet be positioned on the sheet trip finger 46 at the proper moment, the pin 383 will exert pressure on latch 385 to swing rod I23 to the left to temporarily discontinue dampening water feed.

Movement of operating handle 392 and its shaft 39I in a clockwise direction (Figures 1 and 7) from normal position will cause the pin 393 on cam 390 to be moved upwardly and beneath the latch 385, moving the latch to the position shown in Figures 4 and 7, so that the latch 385 will be above the path of movement of the pin 383 on bell crank 380. With this arrangement, the feed of dampening water will not be interrupted, regardless of movement of the bell crank 388 and its pin 383.

Rotation of the cam 390 in a further clockwise direction from the above position will swing 8, thereby disrupting the operating connection the rise 394 against the lower rod I23 of the ductor roll connection, moving this rod from beneath the upper rod I20 so that the drive to the ductor roll 5| will be entirely discontinued.

All matter disclosed but not claimed herein is claimed either in said original Goebel and Wilckens application, Serial No. 103,592 or in our application for Printing press roll structures flied of even date herewith which is also a division of our original application.

We claim:

l. The combination in a printing press, of a printing couple, a water fountain, means to transmit water from said water fountain to an element of said printing couple, means to actuate said last-named means including a pair of rods having their ends normally in abutment, and means to move one of said rods out of abutment with the other.

2. The combination in a printing press, of a printing couple, a water fountain, means to transmit water from said water fountain to an element of said printing couple, means to actuate said last-named means including a pair of rods having their ends normally in abutment, means to' guide one of said rods for reciprocable movement, the other rod being pivotally mounted so that it may be swung out of alignment with said first rod, means to limit the swinging movement of said second rod, and means to move said rods from abutting engagement and to restore them to such engagement.

3. The combination in a printing press, of a printing couple, means to deliver sheets thereto, a water fountain, a movable roll to transmit water from said fountain to an element of the printing couple, means to move said roll, said last-named-means including a pair of longitudinally aligned members arranged for reciprocatory motion, and means to move one of said members out of alignment with the other operated in accordance with the delivery of sheets to the printing couple.

4. The combination in a printing press, of a printing couple, a water fountain, means to transmit water from said water fountain to an element of said printing couple, means to actument of said second rod, and sheet controlled means to move said rods from abutting engagement and to restore them to such engagement.

' HELENE GOEBEL, Administratn'a: of George Goebel, Deceased. EIBE A. WILCKENS.

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