US2128360A - Inking mechanism - Google Patents

Description

Allg 30, 1938 c. w. HARROLD Er AL i 2,128,360

INKING MECHANISM Original Filed Dec. 10, 1934 3 Sheets-Sheet l CHARLES I4( Mimmo BY CL Yae- G. #ORTO/v M Mm 5%2 ATTORNEYS.

30 w33- c. w. HARROLD ET AL '2,128,360

` HIKING MEcHANIsM original Filed Dec. 1o, 1934 s sheets-sheet 2 faz INVENTOR.

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Patented Aug. 1938 iran Aras PATENT OFFICE G. Horton, Bedford,

application Ohio, Seybcld-Potter Company, corporation of Delaware December 1o, 1934. serial signore to Harris- Cleveland, Ohio, a

No. 756.7%. Divided and this application November l2, 1935, Serial No. 49,366

1 4 claims. (ci. ini-ssi) This invention relates to improvements in inking mechanism, and has to do with th'emount- .ing of the inkerand with throw-oil means therefor.

One of the principal objects of the invention is the provision of simple yand improved inker throw-off mechanism which is adapted for either l manual or automatic operation, together with means associated with the throw-ofi' means for exposing the form rollers of the inker for repair or replacement without disturbing any other elements of the inker.

Other objects and features of novelty will appear as we proceed with the description of that embodiment of thel invention which, for the purposes of the present application, we have illustrated in the accompanying drawings, in which Fig. 1 is a side elevational view of an oi-set printing press showing inking mechanism embodying the invention.

Fig. 2 is an end elevation of the same with certain parts removed and others broken away in order to more clearly illustrate the invention.

Fig. 3 is a View similar to Fig. 1, showing the form rollers of the inker thrown o.

Fig. 4 is a further fragmental side elevation, showing the principal part of the inker raised to expose the form rollers.`

Fig. 5 is a plan View, partly in section, illustrating the pivotally mounted inker frames, on a smaller scale, and

Fig. 6 is a fragmental elevational view showing the free end of the lower inker frame in its raised position.

The present case is'a division of our copending application Serial No. 756,794, filed December 10, 1934.

The invention is illustrated herein as appliedto an off-set press wherein theframe of the press comprises side members I and tie rods II. In the printing couple illustrated there are three parallel shafts I2, I3 and I4 upon which are rotatably mounted a plate cylinder I5, a blanket cylinder I6, and an impression cylinder Il. 'Ihere is also a delivery cylinder I8 mounted upon a shaft I9.

20 is a power shaft carrying a belt pulley 2| which may be driven from any convenient source of power. On the shaft 20 there is a'pinion 22 which meshes with a gear 23 on a short shaft 24 that'carries a pinion 25 on its inner end. Pinion 25 meshes with a gear 26 on blanket cylinder I6. Cylinders I and I'I are driven from gear 26 through a gear 21 on cylinder I5 and a similar gear, not shown. on cylinder I1.

In the machine illustrated an automatic throwoil is provided for blanket cylinder I6, which causes that cylinder to move in a direction diagonally downward toward the left away from both of cylinders I5 and Il. As more fully disclosed in our aforesaid application, the cylinder I6 rotates upon shaft I3, and vshaft I3 is in turn supported in eccentrics that are rotatably mounted in the frame members III. These eccentrics are keyed to the shaft so that they both turn together and to the same extent. Consev quently they may be actuated from one end of the cylinder only. One such eccentric is illustrated at 28in the drawings. .To it is attached a crank 29.

On the end of crank 29 there is mounted a noddle pin 30 which is perforated to receive the.

end of' a short connecting rod 3|, the lower end of which is formed with an eye which surrounds a pin 32 mounted in a bell crank lever 33 which is pivoted to the frame at 34. `'I'he lever 33 is provided with two adjustable studs 35 and 3B which are adapted to engage with stop blocks 31 and 38 respectively on the frame of the machine, thereby limiting the movement of the' lever in either direction.

The right-hand end of lever 33, as viewedI in Figs. 1 and 3, is formed with a slot' 39 which receives a pin 40 that is mounted in a lever 4I which pivots upon a pin 50 s et into the frame I0. The lever 4I is also provided with two forwardly projecting pins 5I and 52. These latter pins are adapted to be engaged on their lower sides by .shoulders on the opposite lsides of a plunger 53 which carries a roller follower on its lower end. This follower runs upon a cam 54 which is pinned to shaft I9.

Pivotally connected with the plunger 53 is a trip rod 5l which may be automatically operated in connection with the sheet feeding mechanism of the press, or manually operated. It is shown in Fig..1 in the normal'running position. In order to guide the lower end of plunger 53 and in order to provide pressure to hold the plunger follower against the surface of c-am 54, we mount the lower end of the plunger upon a pivot 58 carried by the bifurcated end of a bell crank lever 59 which is pivotally mounted upon the frame at 60. Within the bifurcated extremity of the other end of lever 59 we pivot a rod 6I which is slidably mounted in a perforated ear 62 projecting from the frame I0. A coil spring 63 surrounds the rod 6I between the ear 62 and adjusting nuts 6,4 threadably mounted on the rod. Spring 63 therefore tends to lower pivot pin 58.

lNow, assuming that the sheet feeding means of the press is provided with an automatic trip mechanism, then when there is an interruption to thefeeding of the sheets the rod 51 moves toward the left from the position illustrated in Fig. 1, throwing the plunger 53 against the side of pin 5|.. As the high spot of cam 54 raises plunger 53 the shoulder on the left of the plunger engages pin 5| and pushes it upward, thereby swinging the lever 4| from the position of Fig. 1 to that of Fig. 3. Lever 33 is thereby swung to the position of Fig. 3, pulling downwardly upon the outer lend of crank 29, and imparting a slight clock- \wise rotation to eccentric 28, which moves the shaft I3 sufficiently to throw cylinder I8 out of contact with cylinders I5 and |1.

.The inker includes a lower frame 88, which comprises two independent side members. This frame is pivotally mounted at one end upon a short shaft 8| which is fixed in an upwardly projecting part of the frame I8, and at the other upon a sleeve 82 mounted in the frame surrounding 'a short shaft 83, to which reference will be made again hereinafter. The two shafts 8| and 83 are, of course, in alignment. 'Ihis frame 88 has brackets 84, 85 and 88 in which are rotatably mounted form rollers 81, 88 and 89 respectively, which run upon plate cylinder |5 in the normal printing position', as indicated in Fig. 1.

`Also pivoted upon shaft 8| and sleeve 82 is a second or upper fame 98, having side members and cross struts. While the pivotal mounting of frames 88 and 98 about a common axis is the preferred construction, it is permissible to mount them upon separate axes. and one of them may be pivotally carried by the other, the latter being pivoted inthe main frame `of the machine. In frame 98 there may be'mounted the'remaining elements of the inker, including an ink fountain 9|, an ink drum 92, storage rollers 93 and 93', and idler'gears 94 and 95. A gear 95 on the inner end of shaft 83 meshes with idler 94 which drives a gear 91 on the shaft of roller 93, while idler takes its driving force from gear 91 and transmits rotation to a gear 98 on the shaft of drum 92 and to a gear 99 on the shaft of roller 93. In the operative position of the inker, the two storage rollers 93 and 93. transfer ink to the form rollers 81, 88 and 89 which spread it upon the platecylinder I5.

'Ihe forward ends of the two side membersof frame 88 are recessed to ii't over upwardly pro- Jecting portions of the side members of the main.

frame I8. Within each of these side members are .sockets receiving piungers |88 that are pressed upwardly by coil springs |8I. The plungers engage the side members ofthe frame 88 and tend to raise that frame to the extent indicated in Figs. 3, 4 and 6. The forward ends of the side members of frame 98 rest upon the forwardends of-fra'me 88Vand hence are influenced by the springs |8| and their plungers |88.

We provide means, however, to pull down the forward ends of frame 98 against the action of springs |8| and to hold both frames inl their `lowered position, indicated in Fig. 1, this means serving further to raise upper frame 98 to its fully elevated position shown in Fig. 4. The means in question comprises a pair of connecting rods |82 adiustably pivoted to the forward ends of the side members of frame 98. The lower extremities of these connecting rods are curved and are pivotally connected at |83 with cranks |83' carried outside the main frame members by a rock shaft |84. On one end of this shaft there is pinned a hand crank I85 by means of which the shaft may be turned from one extremev position, illustrated in Fig. l, through an intermediate position, illustrated in Fig. 3, where the springs |8| are free to act, and toits other exl and 89 for removal and replacement. It will be noted that in Fig. 1 the pivot point |83 is` overv center in one direction, while in Fig. 4 it is 'over center in the other direction. Hence wheneither one of these positions has'been assumed, the parts tend to remain in that position.

An adjustable screw |88 mounted in one of the connecting rods |82 engages the shaft |84 and limits the downward movement of rods |82 and the clockwise movement of crank I85. An adjustable screw |81 carried by the main frame i i8 engages a projection |88 on the crank I85 and limits the upward travel of frame 98, as indicated in Fig. 4.

It is desirable that the form rollers 81,88 and 89 be lifted out of engagement with cylinder I5 whenever the feed of paper sheets is interrupted,

and to this end we provide means for vshifting' crank |85 from the position of Fig. 1` to that of Fig. 3 whenever the throw-ofi? for blanket cylinder I6 is operated. This means consists of a rod |89 pivoted upon the extremity of pivot pin 32 and resiliently supported from eccentric 28 by a coil spring I|8. At its free end this rod is made slightly concave so as to t upon projection |88 of crank |85. When the tripping mechanism of the press operates to shift rod 51 toward the left from the position of Fig. 1, and the plunger' 53 is raised by cam 54, moving levers 4I and 33 to the positions of Fig. 3, rod |89 is carried t0- ward the left and swings levery I85 overdead center, whereupon springs |8I exert pressure acting through piungers |88 to lift the forward extremities vof frames 88 and 98, thereby raising the form rollers 81, 88 and 89 sufiiciently to clear plate cylinder |5.

On shaft 24 outside of frame I8 there is al sprocket wheel ||1 over which runs a chain ||8 that extends upwardly and over a sprocket wheel I|9 on shaft 83. It is by this means that the inker rollers are driven.

The dampening mechanism, which is indicated diagrammatically in the drawings, comprises a frame |28, a fountain roller I2I, a swinging ductor roller |22, a pair of rollers |23 and |24 in contact with the plate on the plate cylinder I5, and an intermediate roller |25. Roller |25 carries a gear which meshes with a gear mounted in frame |8 and indicated at |26, which in turn meshes with a gear |21 on shaft 83. (See Figs. 2 and 5.)

From theforegoing it will be apparent that whenever there is an interruption in the feedof sheets to lthe press, both of the frames 88 "and 88 are automatically raised to prevent further inking of the plate cylinder, .and that this is accomplished by swinging the entire ink mechanism upwardly about its pivotal mounting. It

will also be apparent that by the manipulation of lever |85 the inking of plate cylinder |5 may be discontinued manually, that is by throwing lever |85 to the position of` Fig. 3, and that by continuing the movement of lever |85 to the position of Fig. 4 the upper frame 98 may be raised independently of frame 88 far enough to expose form rollers 81, 88 and 89, permitting their re.

area-seo l s -3 lof the other, one of said frames carrying a form roll and the other carrying means continuouslyl engaging said form'roll for inking the same, and throw-off means for moving said two frames out of operative position.

2. In a machine of the class described, a main "frame, an inker comprising two frames each mounted on the main frame to swing about a horizontal axis, one of said inker frames carrying a form roll and the other carrying means con- `tinuously engaging said form roll for inking the same, and throw-off means for moving said two frames simultaneously out of operative position.

3. In a .machine of the class described, a main frame, an inker comprising two frames each mounted on the main frame to swing about a horizontal axis, one oi said inker frames carrying a form roll and the other carrying inking apparatus adapted to cooperate with said form roll' continuously during the normal operation of the inker, throw-oi means for moving said two frames simultaneously out of operative position, and

means for moving that one of said frames which carries the last named inking apparatus away from operative position to a greater extent than the frame which carries the form roll.

4. In a machine ci' the class described, a pair of swinging frames pivotally mounted about the same axis, inking apparatus carried partly by one frame and lpartly by the other, means for holding both of said frames in operative position, spring means tending to shift both frames out or operative position, means for releasing said holding means, and means for moving one o1' said frames about said axis to increase the angle between the frames and separate that portion of the inking apparatus carried by one Irame'i'rom the portion carried by the other frame.

5. Ina printing press, a printing couple, an

' inker comprising two frames pivotally mounted to swing about the same axis, a form roll mounted upon one of said frames, a distributing roll mountedl on the other frame and adapted to cooperate with said lform roll, a throw-o i for said printing couple, trip mechanism arranged to operate said throw-oil and swing said first-mentioned frame away from operative position, and means for manually swinging one of said frames away from the other frame in order to expose said form roll.

6. In a printing press, an inker comprising a frame pivotally mounted to swing about ahorizontal axis, spring means tending to raise the free end of said frame to a limited extent, a lever and link mechanism arranged when in one position to hold down said frame against the action of said spring, when in another positiontopermi'tthe raising of the frame by said spring means, and

when moved to a third position to raise the free end of said frame beyond the elevation resulting from vthe action of said spring means.

'7. In a machine of the class described. an inker comprising an ink fountain, two frames, 'a form roller carried by one ot said 'framealiirst and second distributing rollers -carried by the other of said frames, said first distributing roller being normally in contact with said form roller and with said second distributing roller, said second disl tributing roller being located between the ink Afountain and said 'rst distributing roller for conveying ink from the former to the latter, power operated means controlled lby said machine for moving both of said frames away from operative 10 position while maintaining the, positions of all three of said rollers relative to each other, and means for separating said form roller from said iirst distributing roller .comprising means for l moving one of said frames relative to the other. 15 8. In a machine of the class described, an inker comprising an ink fountain, two pivotally mounted frames, a form roller carried by one oi. said frames, first and second ink distributing rollers carried by the other of said frames, said rst zo distributing roller being normally in contact with said form roller. said second distributing roller being located between the ink fountain and said first distributing roller for conveying ink from the former to the latter, means for swinging said 2,5

two frames about the axis of one of them out of operative position while maintaining the positions of the rollers carried thereby in the same relation relative to each other, and means for swinging one of said frames about its pivot rela- 30 tive to the other frame to separate said form roller from said iirst distributing roller.

9. In a machine of the class described, an inker comprising iirst and second pivotally mounted frames adapted to swing about a. common axis, a" 5 form roller carried by said first frame, an inking roller normally in contact with said form roller and carried by said second frame, means for swinging one of said frames about its axis relative to the other frame for separating said rollers, 40

and a gear i'or driving said'last mentioned roller mounted to turn on the common axis of said frames.

l0. Inama'chine of the class described, an-inker comprising rst and second pivotally mounted frames, a form roller carried by said first frame, a plurality of positively driven elements for inking said form roller carried by said second frame, means for swinging both of said frames about a common axis out of operative position, means for swinging one of said frames about its axis relative to the other frame, and gearing for said positively driven elements including a gear mounted to turn on the common axis of said frames. l'

1l. In a machine of the class described, an inker comprising rst and second pivotally mountedl frames, a form roller carried by said rst frame, an ink fountain and associated elements carried by said second frame', throw-oil.' means for moving 30 said two frames simultaneously about a common axis out of operative position, and a gear for driving said ink fountain and associated elements mounted to turn on the common axis of said frames.

12. Ina machine of the class described, a main frame, an inker comprising two frames eachmovably mounted with respect to the other, inking apparatus carried partly by one frame and partly by the other, operative connections acting on one of said frames for moving both frames into operative position and holding them there under vpressure, and means acting on the other of said frames for moving both frames out oi' operating position.

13. In a machine of the class described, amain frame. an inker comprising two frames each movably mounted with respect to the other, inking apparatus carried partly by one frame and partly y by the other, operative connections acting on one oi said inker frames for moving both inker frames toward said main frame into operative position and holding them there under pressure,v and resilient means acting on the other of said inker frames tending to oppose said movement and when freed from the restraint of said first named means serving to move both frames out of operative position.

`14. In a machine of the class described, a main frame, an inker comprising two trames each mqv- 15 ably mounted with respect to the other, the rst and connections between the main frame and said second inker frame for moving the latter into operative position.

CHARLES W. HARROLD. CLYDE Ci'.A HORTON.

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