US1173488A - Inking mechanism. - Google Patents

Description

E. W. COOPER.

INKING MECHANISM.

APPLICATION FILED JUNE 14, 1913.

1 1 73A 8 Patented Feb. 29, 1916.

2 SHEETSSHEET l.

E. W. COOPER.

INKING MECHANlSM.

APPLICATION FILED JUNE 14. 1913.

Patentefl Feb. 29, 1916.

2 SHEETS'SHEET 2.

iELLISW. COOPER, OF BLOOMFIELD, NEW JERSEY, ASSIGNOR TO B. HOE All?!) 00., OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

INKING MECHANISM. I

Specification of Letters Patent.

Patented Feb. 29, 1916;

To all whom it may concern:

- Be it known that I, ELLIs W. CoorER, a citizen of the United States, residing at Bloomfield, county of Essex, and State of New Jersey, have invented certain new and useful Improvements in Inking Mechanism, fully described and represented in the following specification and the accompanylng drawings, forming a part of the same.

This invention relates to certain improvements in inking mechanism for printing machines.

The invention has for its object to provide a construction of simple and improved design whereby a pre-determined quantity of ink may be taken from a suitable ink supply and delivered to. the form member of a printing couple at each printing operation of the couple, the measured quantity of ink being delivered or fed under pressure, thus insuring an even and constant supply of ink to the printing member of the couple at each operation thereof.

Other objects of the invention will appear in the description of a mechanism embodying thesame, which will now be given in connection with the accompanying drawings, in which:

Figure 1 is a plan view, partly in section, of so much of a printing machine embodying the invention as is necessary for an understanding thereof; Fig. 2 is a side ele vation, partly in section, of the construction shown in Fig. 1; Fig. 3 is a section on line 33 of Fig. 2, showing the ink measuring and feeding means, and Fig. 4 is a side view, partly in section, of a modified form of mechanism which may be employed.

Referring now to the drawings, the machine chosen to illustrate the invention is a rotary machine, though it will be understood that the invention is adapted for use in -machines other than rotary. One printing couple of such a machine is shown comprising form cylinder 1 and impression cylinder 2. Cooperating- .with the form cylinder are the usual form rollers 3, 4, which take ink' from a distributing cylinder 5. I In accordance with the invention as hereinafter referred to, the cylinders and rollers all operate at the same surface speed. Machines embodying the invention will include means for measuring out and delivering a predetermined amount of ink to the form member at each printing operation thereof, the ink delivered being measured from a suitable source of supply and fed under. pressure, whereby a constant and even distrlbution of ink is effected. The means employed for effecting this. may be varied. In the construction illustrated, these means include a pair of gears 7, 8 carried on short shafts 9, 10, the gears being mounted in a casing 11 suitably secured in the frame of the machine. Ink is supplied to this casing by a pipe 12 from a suitable source of ink supply (not shown). These gears are operated intermittently to deliver at each printing operation of the 'form cylinder a predetermined amount of ink, this amount being determined by the distance the gearsare caused to move at each operation. The means for eflecting movement of the gears may be somewhat varied. They will, however, preferably be driven from one of the moving parts of the machine before referred to, and in the particular construction illustrated are driven from the distributing cylinder 5, which, as before stated, runs at the same surface speed as the form cylinder 1. For effecting the delivering movement of the gears from the distributing cylinder, shaft 14 of the distributing cylinder 5 is provided at one end with a cam 15 having a cam groove 16 in which takes a stud 17 fast, on a yoke 18 on the shaft 14. Connected at one end to the yoke 18 is a rod 19 which at its other end is connected to one arm 20 of a bell crank lever pivoted on the short shaft 9 before referred to. The other arm 21 of this lever carries a pawl -22 on a pawl stud 26 which pawl cooperates with a ratchet 23 fast on the. shaft 9. Through these connections, the gear 7 mounted on shaft 9 is given an intermittent rotary motion and with gear 8 acts to measure out from the ink supply a predetermined quantity of ink, depending'on the throw of the pawl. The gears 7, 8, further more, form in effect a gear pump which causes the ink to be delivered from the casof such character that the quantity of ink may be varied, while the machine is in operation. In the particular construction illusonto the ink receiving roll 32.

trated this result is effected by adjusting the throw of the pawl. In the construction illusstrated these means include an arm 24 pivoted on the short shaft 9, on one end of which arm is a guard plate 25 located below the pawl and on which the pawl is adapted to ride and be held out of engagement with the teeth of ratchet 23. The other end of this arm is formed into a curved plate 28, through the slotted portion of'which there projects a stud 27 suitably secured to the casing 11, so that this slotted arm may be secured in any desired position by the clamp 29, thus throwing the guard to the right or left, and causing the pawl to come into operative engagement with the ratchet earlier or later in its throw. With this construction the operative throw of the pawl may be varied as desired and the consequent amount of ink supplied correspondingly varied.

The mechanism emplayed for delivering the ink after it is delivered from the gears may vary Widely. These means will, however, preferably include an ink receiving chamber from which it is fed to an ink receiving cylinder. In the construction illustrated in Fig. 2 the ink isdelivered from the casing 11 before referred to through a pipe 30 to a chamber 31 formed in a block 31' supported in the frame of the machine. In the construction illustrated, this chamber 31 is a narrow reservoir or conduit adjacent to an ink receiving roll 32 and extends substantially the length of such roll. In the preferred construction, the cross-sectional area of the conduit diminishes slightly from the inlet end, as indicated in dotted lines in the plan view shown in Fig. 1, this construction being adopted so as to provide a constant pressure of the ink throughout the reservoir. The conduit is provided with a discharge throat 33 which, in the particular construction shown, is formed by a pair of plates 34, 35. The plate 34 is a fixed plate and is secured to the wall of the reservoir. The plate 35 is secured to a removable cap piece 36 fastened to-the reservoir wall in any suitable manner, as by screw and nut 37. The plate 35 is a flexible plate and is extended beyond the plate 34 so as to lap over This plate 35 may be adjusted at various points along the periphery of the roll by means of set screws 38, whereby the ink supply 'to the roll may be somewhat varied at difl'erent points.

The ink receiving roll 32 delivers its ink to a ductor roll 39; from which the ink is delivered to distributing cylinder 5. The roll 32 and ductor 39 are driven at the same surface speed as the distributing cylinder 5 through any suitable gearing.

The ink receiving roll 32, when employed, is preferably given a reciprocating motion horizontally of the ductor roll 39 to break up the ink and-insure a more even distribution. This movement may be given the roll I in any suitable manner. In the constructionv illustrated, the shaft 14 of the distributing cylinder 5 on the other side of the machine is provided with a cam 40 having a cam groove 41 into which takes a stud 42 on an arm 43 pivoted on a stud 44 carried. in a bracket 45 suitably secured in the frame of the machine. carries a stud 46 which takes into a grooved collar 47 on the shaft 48 of the ink receiving roller 32. Through these connections the roll is given a slight reciprocating motion horizontally of the ductor roll.

In some instances it may be desirable to omit the ink receiving roll 32 and the ductor 39. In such constructions, the ink is delivered directly from the reservoir to the ink distributing cylinder which, in. such cases, becomes an ink receiving cylinder and acts to distribute the ink received by it to the formrollers. Such construction is illustrated in Fig. 4, in which, except for the omission of the ductor and the ink receiving roll, the construction is the same as thatheretofore described, the ink being fed to the ink receiving and distributing cylinder under pressure in predetermined quantities at each printing operation of the form cylinder.

While the invention has been shown and described in its preferred form, it will be understood that changes and variations may be made in the various constructions shown and described for carrying it out, and thatconsequently the invention is not to be lim- What I claim is:

1. In an inking mechanism, the combination with a printing couple, of an ink receiving cylinder from which ink is delivered to the form member of the couple, a reservoir from which ink is delivered to the ink receiving cylinder, the cross-sectional area of said reservoir diminishing from the inlet end, and means whereby a predetermined 'quantity of ink is delivered under pressure to the reservoir at each printing operation The other end of the arm 43 machines, the combination of a printing couple, a pump, means for supplying ink I to the pump, means forvarying the deliv- 105 ited to the precise construction illustrated. v

ery stroke of the pump, whereby varying quantities of ink may be delivered, and connections for delivering the ink from the pump to the form carrying member of the couple.

. 4. In an inking mechanism for printing machines, the combination of a printing couple, a pump, means for supplying ink to the pump, a reservoir to which the ink is delivered from the pump, a delivery orifice from the reservoir, one wall of which is a single flexible plate extending the length of the orifice, and means along the plate whereby the width of the delivery orifice may be increased or decreased to permit varying quantities of ink to be fed through the orifice at different points.

5. In an inking mechanism, the combination with a rotary printing couple, of a distributing cylinder, a pair of gears for measuring ink from a suitable ink supply, and connections operated from the distributing cylinder for actuating the gears to measure out a predetermined amount of ink from the supply at each operation of the distributing cylinder.

6. In an inking mechanism, the combination with a rotary printing couple, of a distributing cylinder, 2. pair of gears operating to measure ink from a suitable ink supply, connections operated from the dis tributing cylinder for actuating the gears to measure out a predetermined amount of ink. from the supply at each rotation of the of the cylinder, and means for varying the throw of the pawl whereby the amount of ink measured by the gears may be varied. In testimony whereof I have hereunto set my hand, in the presence of two subscribing witnesses.

ELLIS W. COOPER. Witnesses RICHARD KELLY, JOHN M.-W. JORDAN.

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