US1565317A - Inking mechanism for presses - Google Patents

Description

Dec-

, I v F. S. ENGLISH INKING MECHANISM FOR PRESSES,

Fi led June 30, 1923 3 sheets-sheet 1 \N I I .4 I N Dec. 15, 1925- J F. S. ENGLISH INK ING MECHANISM FOR PRESSES Filed June 30, 1935 3 Sheets-Sheet 2 Dec. 15, 1925. 1,565,317

F. S. ENGLISH INKING MECHANISM FOR PRESSES Filed June 30, 1935 3 Sheets-Sheet 5 I I Patented Dec. 15, 1925.

UNITEDI'STAITEIS,

1,565,317 PATENT OFFICE.

FRED S.-E NGI|ISH, OF NEW LONDON, CONNECTICUT.

- mxmo mncnnmsm non rnn'ssns.

I Application filed June 30, 1923. Serial No. 648,844.

rotary printing press wherein the advan-- tages are greatest, nevertheless the invention is not limited to this adaptation.v

There are several objects accomplished by the present invention. One object is to provide simple means for throwing out of operation as a unit all the form rollers so that they temporarily cease to supply ink to the form.

Another object is to provide means where by the rollers may be inked up, i. e., the ink may be-carried' over to the form irollers,

while the latter arm-separated from the form, preparatory to starting the printing 'run.-

Another object is to provide means for controlling'the distribution of the ink to suit almost any job which is to be run; that is to say, the inking mechanism may be so arranged that the newest supply of ink may p I cated for both form cylinders 8, 12 but as be applied to any portion of the form, ac-

cording to any special requirements of the form on which the sheets are to be printed. Or the new ink maybe applied to the form just after a sheet has been printed. or just mounted ona carriage, only'one of theside before a sheet is about to be printed.

Another 'objectis to provide simple means whereby when the inking mechanism has been temporarily moved away from :the form it can be readily moved back or returned to exactly the same relation as before it was moved away, in order that when the proper relation or ad-' justment has once been determined for any job the parts can be easily restored to the I vantages will be made apparent in the folsame conditions after a stop such as at lunch hour or over night shut down. Other adlowing detailed description of my invention.- I 1 In the drawings forming part of this application,-

Figure 1 is aside elevation of part of a two revolution sheet. feed rotary pressto whichniy invention has been applied.

Figure 2 is an enlarged side elevation of the principal parts of the inking mechanlsm. v

Figure 3 is an enlarged side elevation showing the device for throwing out the form rollers as a unit.

Figure 4 is a similar view *showing the parts when ,the form rollers are actually thrown out, and

Figure 5 1s a sectional view taken on the line 5-5 of Figure 4.

In Fi ,re 1 I have shown part of one of the side frames 23 of a printing press. There isa feed board 6 from which the sheet is fed to the first impression cylinder 9 and while the sheet is being carried around this cylinder it receives an impression from the form on the first form cylinder 8. Then the sheet transfers from the first impression cylinder 9 to the transfer cylinder 10 and from the latter it is transferred to the second transfer cylinder 11. While the sheet is traveling around the latter it receives animpression from the form on theisecond form cylinder 12 and after that the sheet is taken by the delivery device. These parts are common to a two color rotary press but it is to be understood that my invention may be applied to other kinds of presses.

ress the entire inking mechanism is duplithey 'difi'dr only in their locations :1. description of'one will answer for both and also for other adaptations.

The inking mechanism as a whole, is

frames 20 of which is here shown, it being understood that a duplicate of it is arranged at the opposite side of the press.

There is a hand wheel 85 on a stud 8i riage being mounted on a suitable track as in present practice.

There is a shaft 87 on the carriage, which" has a ear 71 which meshes with and is driven by the gear 70 when the carriage is close up to the form cylinder 12. The gear 7 0 as is usual is operated from the gear (not shown) of the form cylinder '12. When the gears 71 and 70 are in mesh the ink .ing mechanism is operated when the press In this form of I is' operated but these gears may be separated as when the carriage is racked forward (to the left in the drawings) by means of the hand Wheel 85.

The gear 71 operates a gear 72 on the stud l, and a small gear 75 on this same stud operates the gear7 6 on a shaft 74, which lat ter makes one revolution for each complete cycle or operation of the press. There is a cam 81 on the shaft 74 which operates on the roller 24 to rock the lever 80 on its shaft 25 and the lever 80 acts through the pitman 79 to rock the lever 26 on the shaft 78. The upper, forked end 27 of the lever 26 carries the shaft of the fountain ductor roller 68. This roller alternately contacts with the fountain roller 69 which takes the ink from the fountain 28, and with the vibrator roller 67. There is-a crank 77 on the shaft 74 and this operates through a pitman 29 to rock the lever arm 30 to actuate the fountain roller in the usual manner.

- which in turn transfers the ink to the lower pair of form rollers 61. All the form rollers contact with the form on the cylinder 12 when the press is in operation.

The gear 72 on the stud 1, operates a gear 2 on the shaft 102 of the ink drum, whereby the latter is driven. The gear 2 operates the gears 7 3 which in turn operate gears 3 on the shafts of the vibrator rollers 62, 62'.

There is a lever 112 rocking on the shaft 113 which has one arm provided with a roller 119, that is acted on by a cam 114 on the shaft 74 to operate this lever. The other arm of this lever extends upwardly and it serves to move the ductor rollers 64, 63 into and out of contact with the vibrator rollers back and forth partly around the ink drum 65, so that they periodically contact with the vibrators 62 62' and then move out of contact.

Regulation of distribution ofink. It is evident that the ductor rollers 63 and 64 can be moved against the vibrators 62, 62', at any predetermined time depending on the time best suited to the job; that is, on the criod or places where the fresh supply of ink should be first applied to the particular form for best results. For instance, the fountain ductor roller 68 may put ink on the vibrator roller 67 just long enough before the roller 64 leaves the vibrator 62 so that the fresh supply of ink is carried around on the drumto the roller 64 but before the roller 62? receives this fresh supply of ink. This can be controlled by a suitable setting of the cam 81 and the cam 114. When this has been done the relation of the time that the roller 64 comes back into contact with roller 62 with a fresh supply of well out up ink, to-the timing of the form cylinder can be controlled by moving forward the carriage to release gear 71 from gear 70, and turning the press around until the form cylinder 12 is in position to receive the fresh supply of ink where most desired. It may be desirable to have this fresh supply applied to'the form during the The vibrator roller 67 transfers ink to first revolution in a cycle of the form cylinder 12 past the form rollers61, or just after a sheet has been printed. If this is done, then the "ductor rollers 63 and 64 move away from the vibrators 62 62' during the next or second revolution of the form cylinder 12, and the ink which was placed on the form is further spread out. Or, the fresh supply of ink can be put on the plate or form during the second revolution of the form cylinder of each cycle or just before a sheet is to be printtd, andin time for the fresh supply of ink to cover the entire form or set of plates. Or, ,the parts can be so timed" that the fresh supply of ink is applied to one set or section of plates, which may be the first or last part of the whole form, when one section of the plate or form requires less ink than another part,so that, by simply racking the carriage forward or to the left in the drawings, far enough to separate the gear 71 from the gear vand by turning the plate cylinder 12 to the right position the fresh supply of ink can be applied whenever and wherever desired to the plate or form. The carriage is also moved forward when access is to be had to the plate cylinder 12, and at other times and on such occasions the gears 71, 70 are also separated, and I provide simple means for returning the gears "71, 70 back into the relation which was selected asthe preferred one, whatever the reason may have been for separating them, in order to continue the job under uniform conditions. For purpose I provide a pointer 120 on the shaft 74 and there is a stationary index disk 121 attached to the carriage frame. By means of the set screw 120 the ointer 120 may be set at any position on tne shaft 74. This shaft 74, it is to be remembered, makes one revolution for each complete cycle or for each impression.

this

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Another pointer 31, is'placed on some member which makes one revolution per cy-- cle and from which the carriage is disconnected when moved forward. I have; shown such a pointer 31, attached to the shaft 32 of the press in Figure .1, and there is an index. plate 33 fixed near the path of this pointer. When the parts are originally setfor the desired distribution ofink, the pointers 120 and 31 are set at the marks on their respective indexes and whenever the carriage has been racked forward and it is to be returned again, it is only necessary to see that the pointers 120 and 31' point to the'marks on their indexes and then if the carriage is moved back into placethe gears 71 and 70 willcome into mesh in the same relation as before and the'distribution of ink will continue to be thesame as ,before the'carriage was moved.- I'n bringing thepointer 120 into line with its index -ma'rk,-'the operator may rotate the ink drum 65 and he may turn the press around to bring the pointer 31- into line with its-index mark. The drum ductor rollers 64, 63 facilitate in arriving at the adjustments of distribution above pointed out. The ink rollers may be inked up before starting to inkthe plate or before feeding the sheets to the press. The carriage may be rackedforward or to the left to disengage the form rollersdilfr'om the form or plate of the cylinder; 12, but'the gears '71, 70 remain about half in mesh. In this condition While the weig toprevent the gears the press may be operated and the entire set ofrollers will be driven just as if the press were printing but the form rollers 61 will not place ink on the plate or form. ht of the parts will hold the carriage in this position, I have shown a hook 123, engaging a in 123? on the carriage from getting entirely out of meshg The form rollers 61 may-be thrown-out as; a. unit where the press is to be stopped for any length of time, such as. during lunch hour. Theform roller socket-12st is of'the usual type and for simplicity I have shown only one of these in Figure 4,. but it will be understood that each roller should have a socket. These sockets are an attached to a.

circular segment 125 which-is formed on an arc the center of which is. the axis of the v cylinder 12"when the carriage is close up or in printingposition relatively to this cylinde'r12. This segment is in the nature of a lever pivoted on-the stud 126 so thatit can swing toward and from the cylinder 12.

There is a shaft 127 extending acrossthe press just above the form rollers, audit. is supported or journaled in a hub 128 on the carriage. The segmental lever 125 has a fork 129 at its upper end and cooperating with this fork there is an eccentric bushing 130 which is pinned to the shaft 127 and it cylinder and havingi extends into. the fork 129' and is provided with a flange 131 to preventlateral movement. On the end of the shaftv 127 there is a handle 132 and to the inside of it there is a stop lever 133 which limits the rotation of the shaft to about one half revolution. When the handle 132 is placed as shown in Figure 4, the segmental lever 125 is swung iover omthest-ud 126 so that all the form rollers 61 'are held disengaged from the'vibrator rollers 62, 62' and it is to be understood that at this time'the carriage is racked forward so that the form rollers are also separated fromthe form or plate on the cylinder 12. When the handle 132 is moved to the position shown in Figure 3, allthe formrollers are in contact with the vibrator rollers, 62, 62' and they are all e uidistant from th plate cylinder or they ie in an are which is concentric with the axis of this c linder, when the carriage is moved up c ose to the cylinder with the form rollers touching the form or in its path. When the press is stopped, the carriage is racked forwardlya' few-inches and the handle '132is thrown over and the whole set of form rollera is out of-contact with the form or plate.

' Having described my invention, what I having a plate or form cylinder and a gear, 4 a carriage movable toward and from said inking mechanism carried thereon, inclu ing a gear adapted to mesh with said first gear, indicatingmeans associated with s. a member of the inking mechanism which makes one revolution per cycle-of the press, and indicating means associated with a member of the press which makes one revolution per cycle of the press,

whereby-when sa-id carriage is moye'd' toward said cylinder'said gears maybe causedto mesh in predetermined'relation.

3. In a press the combination-of a press having a' plate or form cylinder and a gear, a carriage movable toward .and from said cylinder and havir'm inking mechanism car ried thereon, inclu ing a gear adapted to mesh with said first gear, an ink drum, form rollers, a-ductor roller interposed between said drum and said form rollers for periodically transferring ink to the latter and indicating'means associated with said press and withsaid inking mechanism for the purpose set forth.

4. In a press the combination of a press having a plate or form cylinder and a gear, a carriage movable toward and from said cylinder and having inking mechanism carried thereon, including a gear adapted to mesh with said first gear, adjustable indicating means associated with the inking mechanism on said carriage, and indicating means associated with said press whereby when the carriage is moved toward said cylinder said gears may be caused to mesh 'in predetermined relation.

5. In a press the combination of a press having a plate or form cylinder and a gear,

a carriage movable toward and from said 4 ,cyllnder and havlng lnklng mechanlsm carried thereon, including a gear adapted'to mesh with said first gear, indicating means associated with the lnking mechanism on said carriage, and adjustable indicating means associated with said press whereby when the carriage is moved toward said cylinder said gears may be caused to mesh in predetermined relation.

6. In a press the combination of a press having a plate or form cylinder, a carriage movable toward and from said cylinder, having inking mechanism carried thereon, indicating means associated with the inking mechanism on said carriage and indicating means associated with the press whereby when said carriage is moved toward said cylinderv its driving mechanism may be properly timed with relation to said cylinder.

Signed at New London, county of New London, and State of Connecticut, this 31st day of March, 1923.

. FRED s. ENGLISH.

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