US1027853A - Inking apparatus for printing-presses. - Google Patents

Description

R. T. JOHNSTON. INKING APPARATUS FOR PRINTING PRESSES. APPLICATION FILED MAY 3, 1904. BENEWED 00T. 4, 1911.

A Patented May 28, 1912.

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R. T. JOHNSTON.

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INKING APPARATUS POR PRINTING PRESSES.

APPLIOATION FILED Mns, 1904. RBNBWED 0012.4. 1911.

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R. T. JOHNSTON.

INKING APPARATUS FOB, PRINTING PRESSES.

APPLICATION FILED MAY.' 3, 1904. RENEWED 00T. 4, 1911. 1,027,853, L Patented May 28, 1912.

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WEQBERTJT. JOHNSTON, OE PLAINEIELE, NEW JERSEY, ASSIGNOR,

""niNTs, To THE AUTOPLATE COMPANY JERSEY, A CORPORATION OE NEW JERSEY.

- ink-carrier BY MESNE ASSIGN- OF AMERICA, OF JERSEY CITY, NEW

INKING- APPARATUS FOR PRIN TIN CT-PR-ESSES.

Specication of Letters Patent. Application filed `May 3, 1904, Serial No. 206,127. Renewed October Patented May 28,1912. 4, 1911. Serial No. 652,846.

To all 'whom t may concern.'

Re it known that I, ROBERT T. JOHNSTON, a citizen of the United States, residing at Plaineld, in the county of Union and State of New Jersey, have invented a new and useful Inking Apparatus vfor Printing Presses, of which the following is a speciiication.

The object of this invention is to provide an improved arrangement of inking apparatus for a printing press employing a reciprocating bed carrying a Hat form or forms, cooperating with which is an impression mechanism comprising one or more impression cylinders.

I have invented a new arrangement of inking mechanism which has all the advantages and perfection of the cylinder inking mechanism and all the conveniences of the table distributing mechanism. To accom plish this desirable end, I arrange the inking vmechanism as follows -The ink distributing device is arranged adjacent to the impression cylinder and the form inking rollers, in the position practically the same as that used with cylinder distribution. The ink-fountain and ductor, however, are ar` ranged at the front end of the press remote from the ink-distributing device in the position used in table distribution. An ink-carrier is provided and operated between the ink-supply and ink distributing device preferably by being attached to the reciprocating bed, which carrier in the best form now known to me consists of a small ink-plate depressed below the level of the forms so as not to contact with the form inking rollers, or of an ink-carrying plate placed so far out that it will not reach the outside form inking roller when the bed is in its eXtreme forward position. A connecting device, such as a vibrating roller, is provided to take the charge or daub of ink from the and supply the same to the inkdistributing device. The distributing device and the form inking rollers are arranged so that they are connected at least for a period substantially equal to one full inking' of the forms by the form inking rollers. With this arrangement, the form inking rollers, when performing their function of inking the forms, on one stroke of the bed, at least, are connected to the ink distributing device and have behind them the full charge of distributed ink in the distributing device. By thus enabling the form inking rollers to supply a continued full charge of digested ink to the forms for their entire length, the objection of light printing toward the tail of the sheets is overcome. The connecting device between the ink distributing device and the form inking rollers is arranged to operate in connection with the ink distributing device, the form inking rollers, and the period of connection and disconnection between the latter, so that the undigested ink cannot pass through the distributing device to the form inking rollers, but must remain in said distributing device and be thoroughly digested and worked up before passing to said form inking rollers. This new arrangement further enables me to dispense with the plurality of distributer rollers sometimes employed in connection with each pair of form rollers. In other words, in some of the prior table distribution devices, to overcome, to some measure, the difliculty of light inking a plurality of distributer rollers have been piled up on top of each pair of form inking rollers to increase in some measure the reservoir capacity adjacent to the impression mechanisi This only in a slight degree tends to relieve the distributing de vice of its work and number of rollers. Vhile in my new arrangement the distributing device acts not only to perform the function of working the ink out into an even film, but additionally acts as a reservoir for the form inking rollers at the proper time. To overcome the second difficulty encountered in the previous forms of inking mechanism where the distributing device was arranged close to the impression cylinder and form inking rollers, I place the various rollers which make up the distributing device in frames so mounted that the various rollers are very accessible for replacement and cleaning. By these two improvements I have provided an inking mechanism which has substantially all the advantages of cylinder distribution and of table distribution without the disadvantages previously inherent in either.

My improvement may be worked out in various ways which classify themselves as follows: first: the distributing device may be rotary in action; second: the distributing device may be oscillating in action. In the first class the distributing device may (a) alternately make and break connection with the form inling rollers (ZJ) may have two paths of travel for the ink, each path alternately connecting to the form inlring rollers; or (c) the distributing device may be connected at all t-'mes with the form inking rollers, and the latter operated so as to contact with the forms upon the movement of' the bed in one direction only; or, as a modification, two sets of form inking rollers may be used and connected at all times with the distributing device, one set of form inking rollers being moved to contact with the forms upon the movement of the bed in one direction, and the other set of form inking rollers being moved to contact with the forms upon the movement of the bed in the other direction. In this application for patent generic claims are made to cover both classes and the three types of the first class and specific claims to species (a) of the first class thereof, which specific construction is shown and described. It is to be understood, however, that the broad claimsl made in this case cover both classes and the various species hereinbefore pointed out.

Referring now to the drawings which show said specific arrangement of my invention, and which I believe is the best form for practising the same, Figure 1 is an elevation of the principal parts of a two-revolution single cylinder printing machine with my improvement applied thereto. Figs. 2, 3 and 4 are detail views of the cams used to operate the various parts of the inking mechanism. Figs. 5, 6 and 7 are detail views on an enlarged scale illustrating the frames in which the rollers of the distributing device are arranged, and Figs. 8 to 13 inclusive are diagrams illustrating the operation of the device.

Referring to the drawings and in detail A designates the reciprocating bed, and B the impression cylinder of an ordinary tworevolution single cylinder printing machine. C designates the delivery table arranged at the front of' the machine. D designates a set of tapes onto which the sheets pass from the impression cylinder, and from which they are delivered by an ordinary delivery mechanism, such as an oscillating fly frame E. 10, 11, 12 and 13 designate form inking rollers arranged close to the impression cylinder. Arranged to cooperate with the form inking rollers are distributing rollers 111, 15 and 16. All these parts are arranged .and connected as is common in printing machines of this type and need not be described at length.

In practice, the distributer rollers 14,. 15 and 16 are geared to the reciprocating bed in the usual manner, and have the usggal-cam or screw devices for vibrating "{mgcsam axially. By this arrangement the Crm k' ing rollers will be oscillatory in actikqn to ink the ward and backward.

G designates an ink distributing device made up of a series of rollers. This distributing device, it will be noted is arranged close to the form inking rollers and close to the impression cylinder. The distributing device is made up of three metal or distributer rollers 17, 18 and 19 and three composition rollers 20, 21 and 22. The metal distributer rollers may have any of the usual cam devices employed with the distributer rollers used in the ordinary cylinder distribution so that they will be vibrated to and fro axially as they rotate. The distributer rollers 17, 18 and 19 are journaled in frames 23 which are pivoted to the main framing of the machine as at 24:, and which frames are tied together by a rod 25- These frames are usually provided with hooks 2G to carry the distributer roller 16 which coperatcs with the form inking rollers 12 and 13. 'Ihe distributer rollers 17, 18 and 19 have pinions or gears 27 on their shafts, and by means of intermediates 28 and 29 journaled on studs secured in one of the frames 23 the same are geared together. The gear on the distributer 19 meshes with a gear 30 secured on the pivot of one of the frames 23. This gear is positively rotated during the operation of the press by gearing hereinafter described, and by this arrangement the distributer rolls will be positively and continuously rotated in one direction. The composition rollers 20, 21 and 22 are mounted in hooks secured to supplemental frames 31 p-ivoted at 32 to the frames 23. Stops 33 are arranged on said frames 23 and supplemental frames 31 to limit the pivoting movement of the supplemental frames. By this arrangement the frames can be moved to the position shown in Fig. 6 if it is desired to clean the distributer rollers 17, 18 and 19, or can be moved to the position shown in Fig. 7 if it is desired to remove the composition rollers 20, 21 or 22. rlhe supplemental frames 31 are provided with sockets 34 below the hooks which carry the composition rollers 20, 21 and 22, so that when the parts are moved to the position shown in Fig. 7, said Icomposition rollers are in position to be easily removed, and so that the same can be replaced by simply putting the shafts thereof in said sockets. By turning the parts to the. position shown in Fig, 6, or to the position shown in Fig. 7, all the contacts in the distributing device can be broken, which is desirable when the press is to be left out Vof operation. It will be noted that the distributer 16 has considerable play in the forms as the bed travels both 'foi if ,with adjusting screws hooks 26. By this arrangement the said distributer can make constant contact with the form inking rollers 12 and 13, and the contact between said distributer roller 16 and the composition roller 2O can be broken by slightly raising the frames 23. The raising and lowering of the frames to make or break the contact at this particular point does not interfere with any of the contacts between the rollers of the distributing device which are thus left free to run and continuously grind up and distribute the ink. The frames 23 are provided with hooks 35 at their free ends which are useful for taking out or replacing the rollers. When the frames 23 and supplemental frames 31 are raised to the position shown in Fig. 6 or Fig. 7, the delivery tapes D may be lifted up out of the way as indicated in dotted lines in Fig. 1, or in some cases, the tapes are arranged far enough above the frames to allow them to be swung up Linder the same.

An ink-fountain II is arranged at the front end of the press in the usual position in table distribution. This fountain may be of the usual construction and provided to adjust its supply at various points axially of its roll, and may be provided with the usual mechanism for giving the roll thereof a partial turn for each reciprocation of the bed.

A ductor roll 36 is arranged in arms 37 which are pivoted to the framing, and which are operated by the connections hereinafter described.

At t-he eXtreme forward end of the bed is arranged an ink-carrier I which consists of a small plate arranged at a level below the forms. The ductor roller 3G is arranged to deposit a daub of ink from the ink fountain roll upon this carrier.

An ink conveying composition roller 38 is arranged in arms 39 which are secured to a shaft journaled in the frame of the ma? chine, so that said ink conveyer roller 38 is in position to contact with the distributer 19 of the ink distributing device or with said ink carrier I. This ink conveyer roller is operated by said connections hereinafter described.

The gearing for driving these parts may be arranged as follows r`40 designates the driving shaft which by means of gear 41 and intermediate 42 drives the gear on the impression cylinder. Motion is also communicated from said driving` shaft 40 to the gear 43 which engages upper and lower racks carried by the bed to give the bed its reciprocating movement. Motion is also communicated from said driving shaft 40 by means of a gear 44, pinion 45 and gear 46 to a shaft 47, this last gearing being so arranged that said shaft 47 makes one revolution for each complete reciprooation of the bed. Motion is also communicated from said driving shaft 40 by means of miter gears 48, shaft 49, and miter gears 50 to a gear 51 which meshes with the gear 30 on the pivot 24 of the frames 23. By this last mentioned gearing the rollers of the distributing device will be continuously turned in one direction and the gearing is so proportioned that their peripheral speed will be equal to the speed of the reciprocating bed when the same is printing. On said shaft 47 are arranged cams 52 engaging which are rollers mounted on the end of pivoted arms 53. Pivoted to these arms are rods 54 which extend up through bearings inside of the framing of the machine, and the ends of these arms project up in position to engage the ends of the frames 23. By this construction the distributing device willvbe moved slightly about its pivot by the cams 52, and the contact between the rollers 2O and 16 broken at the proper time so that the device will work as hereinafter described. Also arranged on said shaft 47 is a cam 55 engaging which is a roller se cured on a yoke 56 which connects to a pivoted arm 57 arranged on the shaft which carries the arms 39 of the ink conveyer roller 38. By this mechanism the ink conveyer will be operated between the ink carrier I and the distributer roller 19, so that the device can operate as hereinafter described. Also arranged on said shaft 47 is a cam 58 engaging which is a roller on the end of a yoked rod 59 which connects to an arm on the shaft which carries the arms 37 which carry the ductor 36. By this arrangement the ductor roller 36 will be operated as hereinafter described. Springs are employed as indicated to keep the various rollers against their respective cams.

This hereinbefore described gearing and operating connections are only shown in outline as the same are well understood and as this .showing is sufficient to enable a printing press mechanic to understand the operation thereof.

The operation of the mechanism can be followed from the diagrams Figs. 8 to 13 inclusive. In Fig. 11 the ductor roll is shown as applying' a daub of ink taken from the roll of the ink fountain H to the ink carrier I. This ink is retained by said carrier I until the same is t-aken up by the ink conveyer roller 38 on the return stroke of the bed, as indicated in dotted lines in Fig. 9. This daub of ink is then given to the distributer roller 19 of the ink distributing apparatus, and is ground up and distributed into a thin film by the distributer rollers 17, 18 and 19 and the composition rollers 20, 21 and 22 of the ink distributing apparatus as they constantly rotate. From the distributing device the ink is applied to the form inking rollers, and by the latter to the forms in the following manner. In Fig. 8,

the bed is shown at the end of its forward stroke and as having printed a sheet, so that the forms in this position are cleaned of ink. The bed now moves backward, toward the fountain, and at the position shown in Fig. 9 acquires its full speed movement in this direction. As soon as this full speed movement is acquired the frames 23 are slightly lowered, thus making contact be tween the composition roller 2O of the ink distributing device and the distributer roller 16 of the form inking rollers, or thus connecting the ink distributing device to the form inking rollers. Now as the bed conn tinues its movement toward the ink-fountain the form inking rollers will ink the.

forms, and the continued or repeated rotation of the form inking rollers while inking the forms will not cause a diminution of the ink supply as the form inking rollers are locked to the ink distributing device'. This action continues until the bed reaches the right hand limit of its full speed movement toward the ink fountain, as shown in Fig. 10, when the retardation of the movement of the bed commences. At this point the frames 23 are slightly raised to break contact between rollers 1G and 20. This will not interfere with a continued full charge of ink being given to the forms, as the saine have already passed under the two forward form inking rollers 10 and 11, and nearly clear of the form inking roller 12, and the point of contact of the form inking roller 13 is less than its circumference away from the gripper edge of the forms. The bed non, reverses its movement at its right hand extreme near the ink fountain as shown in Fig. 11, and thus acquires its full speed movement to the left at the point indicated in Fig. 12. This full speed movement causes the printing so soon as the gripper edge of the forms engages the impression cylinder, which printing movement continues until the full speed movement of the bed to the left is linished as shown in Fig. 13. During this forward movement of the bed, as the forms pass under the form inking rollers the full and even charge of ink which the forms received as the bed moved toward the ink fountain will not be disturbed, but will be perhaps a little more evenly spread. The bed is retarded from the posit-ion shown in Fig. 13 to its extreme of travel or the position shown in Fig. S, from which position thc operation just described is repeated. Thus it will be seen that the forms are inked by the form inking rollers while the same are connected to the distributing device, so that there is substantially a full and complete inking for the entire length of the forms on the backward stroke of the bed. The daub of ink is applied by the connecting roller 3S to the distributer 19 just as the left-hand edge of the ink-carrier passes by said connecting roller 38 on the movement of the bed toward the ink-fountain. This daub of ink will be carried forward through the distributing device, but before the same reaches the composition roller 20 connection will be broken between said composition roller 20 and the distributer 16 of the form inking rollers, whereby the daub of ink cannot pass through the distributing device to the form inking rollers, but must remain in said distributing device and be thoroughly digested and worked up before passing to said form inking rollers. Thus the advantageous results hereinbefore particularized are neatly and mechanically obtained.

If desired, a small ink spreading table T may be carried by the bed between the inkcarrier and the forms for the purpose of evening the ink among and between the form inking rollers, as is shown in dotted lines in Fig. 10. This ink spreading table performs no function of carrying the ink from the .fountain to the distributing device, or from the distributing device to the form inking rollers, but is Simply added for the purpose stated.

A particular advantage of the structure using a rota-ry distributing device resides in the fact that the rollers of the ink distributing device run at the highest speed possible continuously during the operation of the machine, whereby the ink is distributed into a very fine .and even film before it is given to the form inking rollers.

As before stated, the ink distributing device may be arranged to work in several different ways.

The details herein shown and described may be greatly varied by a skilled mechanic without departing from the scope of my invention as expressed in the claims.

Having thus fully described my invention, what I claim and desire to secure by Letters Patent is 1. An inking mechanism for a cylinder printing press having a reciprocating bed or form carrier, comprising, form inking rollers arranged adjacent to the impression mechanism, an ink distributing device through which all the ink passes arranged adjacent to and supplying ink to the form inking rollers, an ink-supply arranged at the end of the press remote from the distributing device, and means for carrying ink from said ink-supply to said distributing device.

2. An inking mechanism for a cylinder printing press having a reciprocating bed or form carrier and a front delivery, comprising form inking rollers arranged in front' of and adjacent to the impression mechanism, an ink distributing device through which all the ink passes arranged to supply ink to the form inking rollers, an ink-supply arranged at the front end of the press, and means for carrying ink from said inksupply to said distributing device.

8. An inking mechanism for a cylinder printing press having a reciprocating bed or form carrier, comprising form inking rollers arranged adjacent to the impression mechanism, an ink distributing device arranged to V supply ink to the form-inking rollers, means for continuously rotating the elements of the distributing device, an ink-fountain and ductor arranged remote from the distributing device, and means for carrying ink from said ink fountain and ductor to -said distributing device.

4. An inking mechanism for a cylinder printing' press having a reciprocating-bed or form carrier, comprising form inking rollers arranged adjacent to the impression mechanism, an ink distributing device arranged adjacent to and supplying ink to the form inking rollers, the elements of said distributing device being geared together, gearing for continuously rotating said elements while the press is ino eration, an ink-siipply arranged at the cnil from the distributing device, and means for carrying ink from said ink-supply to said distributing device.

5. An inking mechanism for a cylinder printing press having a reciprocating bed or form carrier, comprising form inking rollers arranged adjacent to the impression mechanism, an ink distributing device through which all the ink passes arranged adjacent to and connected to said form inking rollers for a period to enable them to have a full charge of digested ink behind them for a full inking of the forms, an ink-supply ar'- ranged at the end of the press remote from the distributing device, and means for carrying ink from said ink-siipply to said distributing device.

6. An inking' mechanism for a cylinder printing press having a reciprocating bed or form carrier, comprising form inking rollers arranged adjacent to the impression mechanism, a rotary ink distributing device through which all the ink passes arranged adjacent to and supplying ink to the form inking rollers, means for alternately making and breaking contact between said form inking rollers and distributing device, an ink-fountain and ductor arranged remote from the distributing device, and means for carrying ink from said ink fountain and ductor to said distributing device.

7. An inking mechanism for a cylinder printing press having a reciprocating bed or form carrier, comprising form inking rollers arranged adjacent to the impression mechanism, frames carrying a series of rolls to make up a distributing device through which all the ink passes, means for moving said frames so that contact will be alterof the press remote nately made and broken between said form inking rollers and distributing device, and means for supplying ink to said distribut- 'ing device.

8.,An inking mechanism for a cylinder printing press having a reciprocating bed or form carrier, comprising form inking rollers arranged adjacent to the impression mechanism, pivoted frames carrying rollers to make up an ink distributing device through which all the ink passes arranged adjacent to and supplying ink to the form inking rollers, means for moving said frames to make and break contact between the form inking rollers and ink distributing device, said means and said frames being arranged so that said frames can be turned on said pivot tobring the rollers of the distributingv device to an accessible position for cleaning or replacement, and means for supplying' ink to the distributing device.

an inking mechanism for a cylinder printing press having a reciprocating bed or form carrier, comprising form inking rollers, pivoted frames carrying rollers making up an ink distributing device for supplying ink to the form inking rollers, gearing for turning the rollers of the ink distributing device, including a driven gear arranged concentric/ally to said pivot, whereby said frames can be swung up without disturbing the mesh of said gearing, and means for supplying ink to the distributing device.

l0. An inking mechanism for a cylinder printing press having a reciprocating bed or form carrier, comprising form inking rollers, frames and supplemental frames carrying metal and composition rollers of an ink distributing device for supplying ink to the form inking rollers, the said frames and supplemental frames being arranged so that by moving the saine the rollers of the ink distributing device are rendered accessible for cleaning and replacement, and means for supplying ink to the distributing device.

ll. An ink distributing device comprising pivoted frames having hooks in which the rollers may be placed, and sockets arranged opposite to said hooks, whereby when said frames are turned over the rollers will drop from said hooks into said sockets.

12. An ink distributing device comprising pivoted frames and a series of metal and composition rollers arranged therein, so that when said pivoted :trames are swung up the contacts between the rollers will be broken.

13. An inking mechanism for a cylinder printing press having a reciprocating bed or form carrier, comprising form inking rollers arranged adjacent to the impression mechanism, an ink distributing device arranged adjacent to and supplying ink to the form inling rollers, an ink-supply arranged remote from the distributing device, and an ink-carrier mounted on the reciprocating bed for carrying ink from said ink-supply to said distributing device.

14. An inking mechanism for a cylinder printing press having a reciprocating bed oi: form carrier, comprising form inking rollers arranged adjacent to the impression mechanism, an ink distributing. device arranged adjacentto and supplying ink to the form inking rollers, an ink supply arranged remote from the distributing device, and an ink carrier comprising a plate secured to the reciprocating bed at av level below the form inking rollers for carrying ink from the ink-supply to said distributing device.

1.). An inking mechanism for a cylinder printing press having a reciprocating bed or form carrier, comprising forni inking rollers arranged adjacent to the impression mechanism, an ink distributing device through which all the ink passes arranged adjacent to and supplying ink to the form inlring rollers, an inksupply arranged remote from the distributing device, means for carrying ink from said ink-supply to said distributing device,` and an ink spread ing table carried by the bed for the purpose of evening the ink between the form inking rollers.

16. An inking mechanism for a cylinder printing press having a reciprocating bed or form carrier, comprising form inliing rollers arranged adjacent to t-he impression mechanism, an ink distributing device arranged adjacent to and supplying ink to the form inking rollers, an ink-supply arranged remote from the distributing device, an ink-carrier mounted on t-lie reciprocating bed, and a vibrating conveyer for taking the ink from the ink carrie-r to the distributing device.

17. An inking mechanism for a cylinder printing press having a reciprocating bed or form carrier, comprising form inking rollers arranged adjacent to the impression mechanism, an ink distributing device arranged adjacent to and supplying ink to the form inking rollers, an ink-supply arranged remote from the distributing device, an ink carrier mounted on the reciprocating bed at a level below the form inking rollers, and a vibrating conveyer for taking the ink from said carrier to the distributing device.

1S. An inking mechanism fo-r a cylinder printing press having a reciprocating bed or form carrier, comprising form inking rollers arranged adjacent to the impression mechanism, an ink distributing device arranged adjacent to and supplying inl; to the form inking rollers, an ink supply arranged remete from the distributing device, an ink carrier mounted on the reciproeating bed, a conveyer and means for move ing the same between said carrier and distributing device.

19. An inking mechanism for a cylinder printing press having a reciprocating bed or form carrier, comprising form inking rollers arranged adjacent to the impression mechanism, an ink distributing device arranged adjacent to and supplying ink to the form inking rollers, means for alternately making and breaking contact between the ink distributing device and form inking rollers, an ink-supply arranged remote from the ink distributing device, an ink-carrier secured to the reciprocating bed, and a conveyer vibrating between the ink carrier and distributing device, the arrangement being such that the undigested ink cannot pass through the distributing device to the form inking rollers, but must remain in said distributing device and be thoroughly digested and worked up before passing to said form inlring rollers.

20. An inking mechanism for a cylinder printing press having a reciprocating bed or form carrier, comprising an ink fountain arranged at the front end of the machine, a ductor which takes the ink from the fountain, an ink carrier mounted at the end of the bed which receives the ink from the ductor, a vibrating or moving conveyer which takes the ink from the carrier, a distributing device which receives the ink from the conveyer and works the same up into a thin film, form inking rollers, and means for passing the distributed ink to t-he form inking rollers from the distributing device.

In testimony whereof T have hereunto set my hand, in the presence of two subscribing witnesses.

ROBERT T. JOHNSTON.

Witnesses CHARLES J. ROBERTSON, E. D.. Morrn'r'r.

Gopes of this patent may be Washington, D. C.

obtained for ve cents each, by addressing the Commissioner of Patents,

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